translate.c

/*
 *  i386 translation
 *
 *  Copyright (c) 2003 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <signal.h>

#include "qemu/host-utils.h"
#include "cpu.h"
#include "disas/disas.h"
#include "tcg-op.h"

#include "helper.h"
#define GEN_HELPER 1
#include "helper.h"

#define PREFIX_REPZ   0x01
#define PREFIX_REPNZ  0x02
#define PREFIX_LOCK   0x04
#define PREFIX_DATA   0x08
#define PREFIX_ADR    0x10
#define PREFIX_VEX    0x20

#ifdef TARGET_X86_64
#define CODE64(s) ((s)->code64)
#define REX_X(s) ((s)->rex_x)
#define REX_B(s) ((s)->rex_b)
#else
#define CODE64(s) 0
#define REX_X(s) 0
#define REX_B(s) 0
#endif

#ifdef TARGET_X86_64
# define ctztl  ctz64
# define clztl  clz64
#else
# define ctztl  ctz32
# define clztl  clz32
#endif

//#define MACRO_TEST   1

/* global register indexes */
static TCGv_ptr cpu_env;
static TCGv cpu_A0;
static TCGv cpu_cc_dst, cpu_cc_src, cpu_cc_src2, cpu_cc_srcT;
static TCGv_i32 cpu_cc_op;
static TCGv cpu_regs[CPU_NB_REGS];
/* local temps */
static TCGv cpu_T[2];
/* local register indexes (only used inside old micro ops) */
static TCGv cpu_tmp0, cpu_tmp4;
static TCGv_ptr cpu_ptr0, cpu_ptr1;
static TCGv_i32 cpu_tmp2_i32, cpu_tmp3_i32;
static TCGv_i64 cpu_tmp1_i64;

static uint8_t gen_opc_cc_op[OPC_BUF_SIZE];

#include "exec/gen-icount.h"

#ifdef TARGET_X86_64
static int x86_64_hregs;
#endif

typedef struct DisasContext {
    /* current insn context */
    int override; /* -1 if no override */
    int prefix;
    int aflag, dflag;
    target_ulong pc; /* pc = eip + cs_base */
    int is_jmp; /* 1 = means jump (stop translation), 2 means CPU
                   static state change (stop translation) */
    /* current block context */
    target_ulong cs_base; /* base of CS segment */
    int pe;     /* protected mode */
    int code32; /* 32 bit code segment */
#ifdef TARGET_X86_64
    int lma;    /* long mode active */
    int code64; /* 64 bit code segment */
    int rex_x, rex_b;
#endif
    int vex_l;  /* vex vector length */
    int vex_v;  /* vex vvvv register, without 1's compliment.  */
    int ss32;   /* 32 bit stack segment */
    CCOp cc_op;  /* current CC operation */
    bool cc_op_dirty;
    int addseg; /* non zero if either DS/ES/SS have a non zero base */
    int f_st;   /* currently unused */
    int vm86;   /* vm86 mode */
    int cpl;
    int iopl;
    int tf;     /* TF cpu flag */
    int singlestep_enabled; /* "hardware" single step enabled */
    int jmp_opt; /* use direct block chaining for direct jumps */
    int mem_index; /* select memory access functions */
    uint64_t flags; /* all execution flags */
    struct TranslationBlock *tb;
    int popl_esp_hack; /* for correct popl with esp base handling */
    int rip_offset; /* only used in x86_64, but left for simplicity */
    int cpuid_features;
    int cpuid_ext_features;
    int cpuid_ext2_features;
    int cpuid_ext3_features;
    int cpuid_7_0_ebx_features;
} DisasContext;

static void gen_eob(DisasContext *s);
static void gen_jmp(DisasContext *s, target_ulong eip);
static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num);
static void gen_op(DisasContext *s1, int op, int ot, int d);

/* i386 arith/logic operations */
enum {
    OP_ADDL,
    OP_ORL,
    OP_ADCL,
    OP_SBBL,
    OP_ANDL,
    OP_SUBL,
    OP_XORL,
    OP_CMPL,
};

/* i386 shift ops */
enum {
    OP_ROL,
    OP_ROR,
    OP_RCL,
    OP_RCR,
    OP_SHL,
    OP_SHR,
    OP_SHL1, /* undocumented */
    OP_SAR = 7,
};

enum {
    JCC_O,
    JCC_B,
    JCC_Z,
    JCC_BE,
    JCC_S,
    JCC_P,
    JCC_L,
    JCC_LE,
};

enum {
    /* I386 int registers */
    OR_EAX,   /* MUST be even numbered */
    OR_ECX,
    OR_EDX,
    OR_EBX,
    OR_ESP,
    OR_EBP,
    OR_ESI,
    OR_EDI,

    OR_TMP0 = 16,    /* temporary operand register */
    OR_TMP1,
    OR_A0, /* temporary register used when doing address evaluation */
};

enum {
    USES_CC_DST  = 1,
    USES_CC_SRC  = 2,
    USES_CC_SRC2 = 4,
    USES_CC_SRCT = 8,
};

/* Bit set if the global variable is live after setting CC_OP to X.  */
static const uint8_t cc_op_live[CC_OP_NB] = {
    [CC_OP_DYNAMIC] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
    [CC_OP_EFLAGS] = USES_CC_SRC,
    [CC_OP_MULB ... CC_OP_MULQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_ADDB ... CC_OP_ADDQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_ADCB ... CC_OP_ADCQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
    [CC_OP_SUBB ... CC_OP_SUBQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRCT,
    [CC_OP_SBBB ... CC_OP_SBBQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
    [CC_OP_LOGICB ... CC_OP_LOGICQ] = USES_CC_DST,
    [CC_OP_INCB ... CC_OP_INCQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_DECB ... CC_OP_DECQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_SHLB ... CC_OP_SHLQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_SARB ... CC_OP_SARQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_BMILGB ... CC_OP_BMILGQ] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_ADCX] = USES_CC_DST | USES_CC_SRC,
    [CC_OP_ADOX] = USES_CC_SRC | USES_CC_SRC2,
    [CC_OP_ADCOX] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
    [CC_OP_CLR] = 0,
};

static void set_cc_op(DisasContext *s, CCOp op)
{
    int dead;

    if (s->cc_op == op) {
        return;
    }

    /* Discard CC computation that will no longer be used.  */
    dead = cc_op_live[s->cc_op] & ~cc_op_live[op];
    if (dead & USES_CC_DST) {
        tcg_gen_discard_tl(cpu_cc_dst);
    }
    if (dead & USES_CC_SRC) {
        tcg_gen_discard_tl(cpu_cc_src);
    }
    if (dead & USES_CC_SRC2) {
        tcg_gen_discard_tl(cpu_cc_src2);
    }
    if (dead & USES_CC_SRCT) {
        tcg_gen_discard_tl(cpu_cc_srcT);
    }

    if (op == CC_OP_DYNAMIC) {
        /* The DYNAMIC setting is translator only, and should never be
           stored.  Thus we always consider it clean.  */
        s->cc_op_dirty = false;
    } else {
        /* Discard any computed CC_OP value (see shifts).  */
        if (s->cc_op == CC_OP_DYNAMIC) {
            tcg_gen_discard_i32(cpu_cc_op);
        }
        s->cc_op_dirty = true;
    }
    s->cc_op = op;
}

static void gen_update_cc_op(DisasContext *s)
{
    if (s->cc_op_dirty) {
        tcg_gen_movi_i32(cpu_cc_op, s->cc_op);
        s->cc_op_dirty = false;
    }
}

static inline void gen_op_movl_T0_0(void)
{
    tcg_gen_movi_tl(cpu_T[0], 0);
}

static inline void gen_op_movl_T0_im(int32_t val)
{
    tcg_gen_movi_tl(cpu_T[0], val);
}

static inline void gen_op_movl_T0_imu(uint32_t val)
{
    tcg_gen_movi_tl(cpu_T[0], val);
}

static inline void gen_op_movl_T1_im(int32_t val)
{
    tcg_gen_movi_tl(cpu_T[1], val);
}

static inline void gen_op_movl_T1_imu(uint32_t val)
{
    tcg_gen_movi_tl(cpu_T[1], val);
}

static inline void gen_op_movl_A0_im(uint32_t val)
{
    tcg_gen_movi_tl(cpu_A0, val);
}

#ifdef TARGET_X86_64
static inline void gen_op_movq_A0_im(int64_t val)
{
    tcg_gen_movi_tl(cpu_A0, val);
}
#endif

static inline void gen_movtl_T0_im(target_ulong val)
{
    tcg_gen_movi_tl(cpu_T[0], val);
}

static inline void gen_movtl_T1_im(target_ulong val)
{
    tcg_gen_movi_tl(cpu_T[1], val);
}

static inline void gen_op_andl_T0_ffff(void)
{
    tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xffff);
}

static inline void gen_op_andl_T0_im(uint32_t val)
{
    tcg_gen_andi_tl(cpu_T[0], cpu_T[0], val);
}

static inline void gen_op_movl_T0_T1(void)
{
    tcg_gen_mov_tl(cpu_T[0], cpu_T[1]);
}

static inline void gen_op_andl_A0_ffff(void)
{
    tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffff);
}

#ifdef TARGET_X86_64

#define NB_OP_SIZES 4

#else /* !TARGET_X86_64 */

#define NB_OP_SIZES 3

#endif /* !TARGET_X86_64 */

#if defined(HOST_WORDS_BIGENDIAN)
#define REG_B_OFFSET (sizeof(target_ulong) - 1)
#define REG_H_OFFSET (sizeof(target_ulong) - 2)
#define REG_W_OFFSET (sizeof(target_ulong) - 2)
#define REG_L_OFFSET (sizeof(target_ulong) - 4)
#define REG_LH_OFFSET (sizeof(target_ulong) - 8)
#else
#define REG_B_OFFSET 0
#define REG_H_OFFSET 1
#define REG_W_OFFSET 0
#define REG_L_OFFSET 0
#define REG_LH_OFFSET 4
#endif

/* In instruction encodings for byte register accesses the
 * register number usually indicates "low 8 bits of register N";
 * however there are some special cases where N 4..7 indicates
 * [AH, CH, DH, BH], ie "bits 15..8 of register N-4". Return
 * true for this special case, false otherwise.
 */
static inline bool byte_reg_is_xH(int reg)
{
    if (reg < 4) {
        return false;
    }
#ifdef TARGET_X86_64
    if (reg >= 8 || x86_64_hregs) {
        return false;
    }
#endif
    return true;
}

static inline void gen_op_mov_reg_v(int ot, int reg, TCGv t0)
{
    switch(ot) {
    case MO_8:
        if (!byte_reg_is_xH(reg)) {
            tcg_gen_deposit_tl(cpu_regs[reg], cpu_regs[reg], t0, 0, 8);
        } else {
            tcg_gen_deposit_tl(cpu_regs[reg - 4], cpu_regs[reg - 4], t0, 8, 8);
        }
        break;
    case MO_16:
        tcg_gen_deposit_tl(cpu_regs[reg], cpu_regs[reg], t0, 0, 16);
        break;
    default: /* XXX this shouldn't be reached;  abort? */
    case MO_32:
        /* For x86_64, this sets the higher half of register to zero.
           For i386, this is equivalent to a mov. */
        tcg_gen_ext32u_tl(cpu_regs[reg], t0);
        break;
#ifdef TARGET_X86_64
    case MO_64:
        tcg_gen_mov_tl(cpu_regs[reg], t0);
        break;
#endif
    }
}

static inline void gen_op_mov_reg_T0(int ot, int reg)
{
    gen_op_mov_reg_v(ot, reg, cpu_T[0]);
}

static inline void gen_op_mov_reg_T1(int ot, int reg)
{
    gen_op_mov_reg_v(ot, reg, cpu_T[1]);
}

static inline void gen_op_mov_reg_A0(int size, int reg)
{
    switch(size) {
    case MO_8:
        tcg_gen_deposit_tl(cpu_regs[reg], cpu_regs[reg], cpu_A0, 0, 16);
        break;
    default: /* XXX this shouldn't be reached;  abort? */
    case MO_16:
        /* For x86_64, this sets the higher half of register to zero.
           For i386, this is equivalent to a mov. */
        tcg_gen_ext32u_tl(cpu_regs[reg], cpu_A0);
        break;
#ifdef TARGET_X86_64
    case MO_32:
        tcg_gen_mov_tl(cpu_regs[reg], cpu_A0);
        break;
#endif
    }
}

static inline void gen_op_mov_v_reg(int ot, TCGv t0, int reg)
{
    if (ot == MO_8 && byte_reg_is_xH(reg)) {
        tcg_gen_shri_tl(t0, cpu_regs[reg - 4], 8);
        tcg_gen_ext8u_tl(t0, t0);
    } else {
        tcg_gen_mov_tl(t0, cpu_regs[reg]);
    }
}

static inline void gen_op_mov_TN_reg(int ot, int t_index, int reg)
{
    gen_op_mov_v_reg(ot, cpu_T[t_index], reg);
}

static inline void gen_op_movl_A0_reg(int reg)
{
    tcg_gen_mov_tl(cpu_A0, cpu_regs[reg]);
}

static inline void gen_op_addl_A0_im(int32_t val)
{
    tcg_gen_addi_tl(cpu_A0, cpu_A0, val);
#ifdef TARGET_X86_64
    tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffffffff);
#endif
}

#ifdef TARGET_X86_64
static inline void gen_op_addq_A0_im(int64_t val)
{
    tcg_gen_addi_tl(cpu_A0, cpu_A0, val);
}
#endif
    
static void gen_add_A0_im(DisasContext *s, int val)
{
#ifdef TARGET_X86_64
    if (CODE64(s))
        gen_op_addq_A0_im(val);
    else
#endif
        gen_op_addl_A0_im(val);
}

static inline void gen_op_addl_T0_T1(void)
{
    tcg_gen_add_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
}

static inline void gen_op_jmp_T0(void)
{
    tcg_gen_st_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, eip));
}

static inline void gen_op_add_reg_im(int size, int reg, int32_t val)
{
    switch(size) {
    case MO_8:
        tcg_gen_addi_tl(cpu_tmp0, cpu_regs[reg], val);
        tcg_gen_deposit_tl(cpu_regs[reg], cpu_regs[reg], cpu_tmp0, 0, 16);
        break;
    case MO_16:
        tcg_gen_addi_tl(cpu_tmp0, cpu_regs[reg], val);
        /* For x86_64, this sets the higher half of register to zero.
           For i386, this is equivalent to a nop. */
        tcg_gen_ext32u_tl(cpu_tmp0, cpu_tmp0);
        tcg_gen_mov_tl(cpu_regs[reg], cpu_tmp0);
        break;
#ifdef TARGET_X86_64
    case MO_32:
        tcg_gen_addi_tl(cpu_regs[reg], cpu_regs[reg], val);
        break;
#endif
    }
}

static inline void gen_op_add_reg_T0(int size, int reg)
{
    switch(size) {
    case MO_8:
        tcg_gen_add_tl(cpu_tmp0, cpu_regs[reg], cpu_T[0]);
        tcg_gen_deposit_tl(cpu_regs[reg], cpu_regs[reg], cpu_tmp0, 0, 16);
        break;
    case MO_16:
        tcg_gen_add_tl(cpu_tmp0, cpu_regs[reg], cpu_T[0]);
        /* For x86_64, this sets the higher half of register to zero.
           For i386, this is equivalent to a nop. */
        tcg_gen_ext32u_tl(cpu_tmp0, cpu_tmp0);
        tcg_gen_mov_tl(cpu_regs[reg], cpu_tmp0);
        break;
#ifdef TARGET_X86_64
    case MO_32:
        tcg_gen_add_tl(cpu_regs[reg], cpu_regs[reg], cpu_T[0]);
        break;
#endif
    }
}

static inline void gen_op_addl_A0_reg_sN(int shift, int reg)
{
    tcg_gen_mov_tl(cpu_tmp0, cpu_regs[reg]);
    if (shift != 0)
        tcg_gen_shli_tl(cpu_tmp0, cpu_tmp0, shift);
    tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
    /* For x86_64, this sets the higher half of register to zero.
       For i386, this is equivalent to a nop. */
    tcg_gen_ext32u_tl(cpu_A0, cpu_A0);
}

static inline void gen_op_movl_A0_seg(int reg)
{
    tcg_gen_ld32u_tl(cpu_A0, cpu_env, offsetof(CPUX86State, segs[reg].base) + REG_L_OFFSET);
}

static inline void gen_op_addl_A0_seg(DisasContext *s, int reg)
{
    tcg_gen_ld_tl(cpu_tmp0, cpu_env, offsetof(CPUX86State, segs[reg].base));
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffffffff);
        tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
    } else {
        tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
        tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffffffff);
    }
#else
    tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
#endif
}

#ifdef TARGET_X86_64
static inline void gen_op_movq_A0_seg(int reg)
{
    tcg_gen_ld_tl(cpu_A0, cpu_env, offsetof(CPUX86State, segs[reg].base));
}

static inline void gen_op_addq_A0_seg(int reg)
{
    tcg_gen_ld_tl(cpu_tmp0, cpu_env, offsetof(CPUX86State, segs[reg].base));
    tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
}

static inline void gen_op_movq_A0_reg(int reg)
{
    tcg_gen_mov_tl(cpu_A0, cpu_regs[reg]);
}

static inline void gen_op_addq_A0_reg_sN(int shift, int reg)
{
    tcg_gen_mov_tl(cpu_tmp0, cpu_regs[reg]);
    if (shift != 0)
        tcg_gen_shli_tl(cpu_tmp0, cpu_tmp0, shift);
    tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
}
#endif

static inline void gen_op_lds_T0_A0(DisasContext *s, int idx)
{
    tcg_gen_qemu_ld_tl(cpu_T[0], cpu_A0, s->mem_index, idx | MO_LE | MO_SIGN);
}

static inline void gen_op_ld_v(DisasContext *s, int idx, TCGv t0, TCGv a0)
{
    tcg_gen_qemu_ld_tl(t0, a0, s->mem_index, idx | MO_LE);
}

static inline void gen_op_ldu_T0_A0(DisasContext *s, int idx)
{
    gen_op_ld_v(s, idx, cpu_T[0], cpu_A0);
}

static inline void gen_op_ld_T1_A0(DisasContext *s, int idx)
{
    gen_op_ld_v(s, idx, cpu_T[1], cpu_A0);
}

static inline void gen_op_st_v(DisasContext *s, int idx, TCGv t0, TCGv a0)
{
    tcg_gen_qemu_st_tl(t0, a0, s->mem_index, idx | MO_LE);
}

static inline void gen_op_st_T0_A0(DisasContext *s, int idx)
{
    gen_op_st_v(s, idx, cpu_T[0], cpu_A0);
}

static inline void gen_op_st_T1_A0(DisasContext *s, int idx)
{
    gen_op_st_v(s, idx, cpu_T[1], cpu_A0);
}

static inline void gen_jmp_im(target_ulong pc)
{
    tcg_gen_movi_tl(cpu_tmp0, pc);
    tcg_gen_st_tl(cpu_tmp0, cpu_env, offsetof(CPUX86State, eip));
}

static inline void gen_string_movl_A0_ESI(DisasContext *s)
{
    int override;

    override = s->override;
#ifdef TARGET_X86_64
    if (s->aflag == 2) {
        if (override >= 0) {
            gen_op_movq_A0_seg(override);
            gen_op_addq_A0_reg_sN(0, R_ESI);
        } else {
            gen_op_movq_A0_reg(R_ESI);
        }
    } else
#endif
    if (s->aflag) {
        /* 32 bit address */
        if (s->addseg && override < 0)
            override = R_DS;
        if (override >= 0) {
            gen_op_movl_A0_seg(override);
            gen_op_addl_A0_reg_sN(0, R_ESI);
        } else {
            gen_op_movl_A0_reg(R_ESI);
        }
    } else {
        /* 16 address, always override */
        if (override < 0)
            override = R_DS;
        gen_op_movl_A0_reg(R_ESI);
        gen_op_andl_A0_ffff();
        gen_op_addl_A0_seg(s, override);
    }
}

static inline void gen_string_movl_A0_EDI(DisasContext *s)
{
#ifdef TARGET_X86_64
    if (s->aflag == 2) {
        gen_op_movq_A0_reg(R_EDI);
    } else
#endif
    if (s->aflag) {
        if (s->addseg) {
            gen_op_movl_A0_seg(R_ES);
            gen_op_addl_A0_reg_sN(0, R_EDI);
        } else {
            gen_op_movl_A0_reg(R_EDI);
        }
    } else {
        gen_op_movl_A0_reg(R_EDI);
        gen_op_andl_A0_ffff();
        gen_op_addl_A0_seg(s, R_ES);
    }
}

static inline void gen_op_movl_T0_Dshift(int ot) 
{
    tcg_gen_ld32s_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, df));
    tcg_gen_shli_tl(cpu_T[0], cpu_T[0], ot);
};

static TCGv gen_ext_tl(TCGv dst, TCGv src, int size, bool sign)
{
    switch (size) {
    case MO_8:
        if (sign) {
            tcg_gen_ext8s_tl(dst, src);
        } else {
            tcg_gen_ext8u_tl(dst, src);
        }
        return dst;
    case MO_16:
        if (sign) {
            tcg_gen_ext16s_tl(dst, src);
        } else {
            tcg_gen_ext16u_tl(dst, src);
        }
        return dst;
#ifdef TARGET_X86_64
    case MO_32:
        if (sign) {
            tcg_gen_ext32s_tl(dst, src);
        } else {
            tcg_gen_ext32u_tl(dst, src);
        }
        return dst;
#endif
    default:
        return src;
    }
}

static void gen_extu(int ot, TCGv reg)
{
    gen_ext_tl(reg, reg, ot, false);
}

static void gen_exts(int ot, TCGv reg)
{
    gen_ext_tl(reg, reg, ot, true);
}

static inline void gen_op_jnz_ecx(int size, int label1)
{
    tcg_gen_mov_tl(cpu_tmp0, cpu_regs[R_ECX]);
    gen_extu(size + 1, cpu_tmp0);
    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_tmp0, 0, label1);
}

static inline void gen_op_jz_ecx(int size, int label1)
{
    tcg_gen_mov_tl(cpu_tmp0, cpu_regs[R_ECX]);
    gen_extu(size + 1, cpu_tmp0);
    tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_tmp0, 0, label1);
}

static void gen_helper_in_func(int ot, TCGv v, TCGv_i32 n)
{
    switch (ot) {
    case MO_8:
        gen_helper_inb(v, n);
        break;
    case MO_16:
        gen_helper_inw(v, n);
        break;
    case MO_32:
        gen_helper_inl(v, n);
        break;
    }
}

static void gen_helper_out_func(int ot, TCGv_i32 v, TCGv_i32 n)
{
    switch (ot) {
    case MO_8:
        gen_helper_outb(v, n);
        break;
    case MO_16:
        gen_helper_outw(v, n);
        break;
    case MO_32:
        gen_helper_outl(v, n);
        break;
    }
}

static void gen_check_io(DisasContext *s, int ot, target_ulong cur_eip,
                         uint32_t svm_flags)
{
    int state_saved;
    target_ulong next_eip;

    state_saved = 0;
    if (s->pe && (s->cpl > s->iopl || s->vm86)) {
        gen_update_cc_op(s);
        gen_jmp_im(cur_eip);
        state_saved = 1;
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        switch (ot) {
        case MO_8:
            gen_helper_check_iob(cpu_env, cpu_tmp2_i32);
            break;
        case MO_16:
            gen_helper_check_iow(cpu_env, cpu_tmp2_i32);
            break;
        case MO_32:
            gen_helper_check_iol(cpu_env, cpu_tmp2_i32);
            break;
        }
    }
    if(s->flags & HF_SVMI_MASK) {
        if (!state_saved) {
            gen_update_cc_op(s);
            gen_jmp_im(cur_eip);
        }
        svm_flags |= (1 << (4 + ot));
        next_eip = s->pc - s->cs_base;
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        gen_helper_svm_check_io(cpu_env, cpu_tmp2_i32,
                                tcg_const_i32(svm_flags),
                                tcg_const_i32(next_eip - cur_eip));
    }
}

static inline void gen_movs(DisasContext *s, int ot)
{
    gen_string_movl_A0_ESI(s);
    gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    gen_string_movl_A0_EDI(s);
    gen_op_st_T0_A0(s, ot);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_ESI);
    gen_op_add_reg_T0(s->aflag, R_EDI);
}

static void gen_op_update1_cc(void)
{
    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
}

static void gen_op_update2_cc(void)
{
    tcg_gen_mov_tl(cpu_cc_src, cpu_T[1]);
    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
}

static void gen_op_update3_cc(TCGv reg)
{
    tcg_gen_mov_tl(cpu_cc_src2, reg);
    tcg_gen_mov_tl(cpu_cc_src, cpu_T[1]);
    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
}

static inline void gen_op_testl_T0_T1_cc(void)
{
    tcg_gen_and_tl(cpu_cc_dst, cpu_T[0], cpu_T[1]);
}

static void gen_op_update_neg_cc(void)
{
    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
    tcg_gen_neg_tl(cpu_cc_src, cpu_T[0]);
    tcg_gen_movi_tl(cpu_cc_srcT, 0);
}

/* compute all eflags to cc_src */
static void gen_compute_eflags(DisasContext *s)
{
    TCGv zero, dst, src1, src2;
    int live, dead;

    if (s->cc_op == CC_OP_EFLAGS) {
        return;
    }
    if (s->cc_op == CC_OP_CLR) {
        tcg_gen_movi_tl(cpu_cc_src, CC_Z);
        set_cc_op(s, CC_OP_EFLAGS);
        return;
    }

    TCGV_UNUSED(zero);
    dst = cpu_cc_dst;
    src1 = cpu_cc_src;
    src2 = cpu_cc_src2;

    /* Take care to not read values that are not live.  */
    live = cc_op_live[s->cc_op] & ~USES_CC_SRCT;
    dead = live ^ (USES_CC_DST | USES_CC_SRC | USES_CC_SRC2);
    if (dead) {
        zero = tcg_const_tl(0);
        if (dead & USES_CC_DST) {
            dst = zero;
        }
        if (dead & USES_CC_SRC) {
            src1 = zero;
        }
        if (dead & USES_CC_SRC2) {
            src2 = zero;
        }
    }

    gen_update_cc_op(s);
    gen_helper_cc_compute_all(cpu_cc_src, dst, src1, src2, cpu_cc_op);
    set_cc_op(s, CC_OP_EFLAGS);

    if (dead) {
        tcg_temp_free(zero);
    }
}

typedef struct CCPrepare {
    TCGCond cond;
    TCGv reg;
    TCGv reg2;
    target_ulong imm;
    target_ulong mask;
    bool use_reg2;
    bool no_setcond;
} CCPrepare;

/* compute eflags.C to reg */
static CCPrepare gen_prepare_eflags_c(DisasContext *s, TCGv reg)
{
    TCGv t0, t1;
    int size, shift;

    switch (s->cc_op) {
    case CC_OP_SUBB ... CC_OP_SUBQ:
        /* (DATA_TYPE)CC_SRCT < (DATA_TYPE)CC_SRC */
        size = s->cc_op - CC_OP_SUBB;
        t1 = gen_ext_tl(cpu_tmp0, cpu_cc_src, size, false);
        /* If no temporary was used, be careful not to alias t1 and t0.  */
        t0 = TCGV_EQUAL(t1, cpu_cc_src) ? cpu_tmp0 : reg;
        tcg_gen_mov_tl(t0, cpu_cc_srcT);
        gen_extu(size, t0);
        goto add_sub;

    case CC_OP_ADDB ... CC_OP_ADDQ:
        /* (DATA_TYPE)CC_DST < (DATA_TYPE)CC_SRC */
        size = s->cc_op - CC_OP_ADDB;
        t1 = gen_ext_tl(cpu_tmp0, cpu_cc_src, size, false);
        t0 = gen_ext_tl(reg, cpu_cc_dst, size, false);
    add_sub:
        return (CCPrepare) { .cond = TCG_COND_LTU, .reg = t0,
                             .reg2 = t1, .mask = -1, .use_reg2 = true };

    case CC_OP_LOGICB ... CC_OP_LOGICQ:
    case CC_OP_CLR:
        return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };

    case CC_OP_INCB ... CC_OP_INCQ:
    case CC_OP_DECB ... CC_OP_DECQ:
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                             .mask = -1, .no_setcond = true };

    case CC_OP_SHLB ... CC_OP_SHLQ:
        /* (CC_SRC >> (DATA_BITS - 1)) & 1 */
        size = s->cc_op - CC_OP_SHLB;
        shift = (8 << size) - 1;
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                             .mask = (target_ulong)1 << shift };

    case CC_OP_MULB ... CC_OP_MULQ:
        return (CCPrepare) { .cond = TCG_COND_NE,
                             .reg = cpu_cc_src, .mask = -1 };

    case CC_OP_BMILGB ... CC_OP_BMILGQ:
        size = s->cc_op - CC_OP_BMILGB;
        t0 = gen_ext_tl(reg, cpu_cc_src, size, false);
        return (CCPrepare) { .cond = TCG_COND_EQ, .reg = t0, .mask = -1 };

    case CC_OP_ADCX:
    case CC_OP_ADCOX:
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_dst,
                             .mask = -1, .no_setcond = true };

    case CC_OP_EFLAGS:
    case CC_OP_SARB ... CC_OP_SARQ:
        /* CC_SRC & 1 */
        return (CCPrepare) { .cond = TCG_COND_NE,
                             .reg = cpu_cc_src, .mask = CC_C };

    default:
       /* The need to compute only C from CC_OP_DYNAMIC is important
          in efficiently implementing e.g. INC at the start of a TB.  */
       gen_update_cc_op(s);
       gen_helper_cc_compute_c(reg, cpu_cc_dst, cpu_cc_src,
                               cpu_cc_src2, cpu_cc_op);
       return (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
                            .mask = -1, .no_setcond = true };
    }
}

/* compute eflags.P to reg */
static CCPrepare gen_prepare_eflags_p(DisasContext *s, TCGv reg)
{
    gen_compute_eflags(s);
    return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                         .mask = CC_P };
}

/* compute eflags.S to reg */
static CCPrepare gen_prepare_eflags_s(DisasContext *s, TCGv reg)
{
    switch (s->cc_op) {
    case CC_OP_DYNAMIC:
        gen_compute_eflags(s);
        /* FALLTHRU */
    case CC_OP_EFLAGS:
    case CC_OP_ADCX:
    case CC_OP_ADOX:
    case CC_OP_ADCOX:
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                             .mask = CC_S };
    case CC_OP_CLR:
        return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
    default:
        {
            int size = (s->cc_op - CC_OP_ADDB) & 3;
            TCGv t0 = gen_ext_tl(reg, cpu_cc_dst, size, true);
            return (CCPrepare) { .cond = TCG_COND_LT, .reg = t0, .mask = -1 };
        }
    }
}

/* compute eflags.O to reg */
static CCPrepare gen_prepare_eflags_o(DisasContext *s, TCGv reg)
{
    switch (s->cc_op) {
    case CC_OP_ADOX:
    case CC_OP_ADCOX:
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src2,
                             .mask = -1, .no_setcond = true };
    case CC_OP_CLR:
        return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
    default:
        gen_compute_eflags(s);
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                             .mask = CC_O };
    }
}

/* compute eflags.Z to reg */
static CCPrepare gen_prepare_eflags_z(DisasContext *s, TCGv reg)
{
    switch (s->cc_op) {
    case CC_OP_DYNAMIC:
        gen_compute_eflags(s);
        /* FALLTHRU */
    case CC_OP_EFLAGS:
    case CC_OP_ADCX:
    case CC_OP_ADOX:
    case CC_OP_ADCOX:
        return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                             .mask = CC_Z };
    case CC_OP_CLR:
        return (CCPrepare) { .cond = TCG_COND_ALWAYS, .mask = -1 };
    default:
        {
            int size = (s->cc_op - CC_OP_ADDB) & 3;
            TCGv t0 = gen_ext_tl(reg, cpu_cc_dst, size, false);
            return (CCPrepare) { .cond = TCG_COND_EQ, .reg = t0, .mask = -1 };
        }
    }
}

/* perform a conditional store into register 'reg' according to jump opcode
   value 'b'. In the fast case, T0 is guaranted not to be used. */
static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
{
    int inv, jcc_op, size, cond;
    CCPrepare cc;
    TCGv t0;

    inv = b & 1;
    jcc_op = (b >> 1) & 7;

    switch (s->cc_op) {
    case CC_OP_SUBB ... CC_OP_SUBQ:
        /* We optimize relational operators for the cmp/jcc case.  */
        size = s->cc_op - CC_OP_SUBB;
        switch (jcc_op) {
        case JCC_BE:
            tcg_gen_mov_tl(cpu_tmp4, cpu_cc_srcT);
            gen_extu(size, cpu_tmp4);
            t0 = gen_ext_tl(cpu_tmp0, cpu_cc_src, size, false);
            cc = (CCPrepare) { .cond = TCG_COND_LEU, .reg = cpu_tmp4,
                               .reg2 = t0, .mask = -1, .use_reg2 = true };
            break;

        case JCC_L:
            cond = TCG_COND_LT;
            goto fast_jcc_l;
        case JCC_LE:
            cond = TCG_COND_LE;
        fast_jcc_l:
            tcg_gen_mov_tl(cpu_tmp4, cpu_cc_srcT);
            gen_exts(size, cpu_tmp4);
            t0 = gen_ext_tl(cpu_tmp0, cpu_cc_src, size, true);
            cc = (CCPrepare) { .cond = cond, .reg = cpu_tmp4,
                               .reg2 = t0, .mask = -1, .use_reg2 = true };
            break;

        default:
            goto slow_jcc;
        }
        break;

    default:
    slow_jcc:
        /* This actually generates good code for JC, JZ and JS.  */
        switch (jcc_op) {
        case JCC_O:
            cc = gen_prepare_eflags_o(s, reg);
            break;
        case JCC_B:
            cc = gen_prepare_eflags_c(s, reg);
            break;
        case JCC_Z:
            cc = gen_prepare_eflags_z(s, reg);
            break;
        case JCC_BE:
            gen_compute_eflags(s);
            cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
                               .mask = CC_Z | CC_C };
            break;
        case JCC_S:
            cc = gen_prepare_eflags_s(s, reg);
            break;
        case JCC_P:
            cc = gen_prepare_eflags_p(s, reg);
            break;
        case JCC_L:
            gen_compute_eflags(s);
            if (TCGV_EQUAL(reg, cpu_cc_src)) {
                reg = cpu_tmp0;
            }
            tcg_gen_shri_tl(reg, cpu_cc_src, 4); /* CC_O -> CC_S */
            tcg_gen_xor_tl(reg, reg, cpu_cc_src);
            cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
                               .mask = CC_S };
            break;
        default:
        case JCC_LE:
            gen_compute_eflags(s);
            if (TCGV_EQUAL(reg, cpu_cc_src)) {
                reg = cpu_tmp0;
            }
            tcg_gen_shri_tl(reg, cpu_cc_src, 4); /* CC_O -> CC_S */
            tcg_gen_xor_tl(reg, reg, cpu_cc_src);
            cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
                               .mask = CC_S | CC_Z };
            break;
        }
        break;
    }

    if (inv) {
        cc.cond = tcg_invert_cond(cc.cond);
    }
    return cc;
}

static void gen_setcc1(DisasContext *s, int b, TCGv reg)
{
    CCPrepare cc = gen_prepare_cc(s, b, reg);

    if (cc.no_setcond) {
        if (cc.cond == TCG_COND_EQ) {
            tcg_gen_xori_tl(reg, cc.reg, 1);
        } else {
            tcg_gen_mov_tl(reg, cc.reg);
        }
        return;
    }

    if (cc.cond == TCG_COND_NE && !cc.use_reg2 && cc.imm == 0 &&
        cc.mask != 0 && (cc.mask & (cc.mask - 1)) == 0) {
        tcg_gen_shri_tl(reg, cc.reg, ctztl(cc.mask));
        tcg_gen_andi_tl(reg, reg, 1);
        return;
    }
    if (cc.mask != -1) {
        tcg_gen_andi_tl(reg, cc.reg, cc.mask);
        cc.reg = reg;
    }
    if (cc.use_reg2) {
        tcg_gen_setcond_tl(cc.cond, reg, cc.reg, cc.reg2);
    } else {
        tcg_gen_setcondi_tl(cc.cond, reg, cc.reg, cc.imm);
    }
}

static inline void gen_compute_eflags_c(DisasContext *s, TCGv reg)
{
    gen_setcc1(s, JCC_B << 1, reg);
}

/* generate a conditional jump to label 'l1' according to jump opcode
   value 'b'. In the fast case, T0 is guaranted not to be used. */
static inline void gen_jcc1_noeob(DisasContext *s, int b, int l1)
{
    CCPrepare cc = gen_prepare_cc(s, b, cpu_T[0]);

    if (cc.mask != -1) {
        tcg_gen_andi_tl(cpu_T[0], cc.reg, cc.mask);
        cc.reg = cpu_T[0];
    }
    if (cc.use_reg2) {
        tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1);
    } else {
        tcg_gen_brcondi_tl(cc.cond, cc.reg, cc.imm, l1);
    }
}

/* Generate a conditional jump to label 'l1' according to jump opcode
   value 'b'. In the fast case, T0 is guaranted not to be used.
   A translation block must end soon.  */
static inline void gen_jcc1(DisasContext *s, int b, int l1)
{
    CCPrepare cc = gen_prepare_cc(s, b, cpu_T[0]);

    gen_update_cc_op(s);
    if (cc.mask != -1) {
        tcg_gen_andi_tl(cpu_T[0], cc.reg, cc.mask);
        cc.reg = cpu_T[0];
    }
    set_cc_op(s, CC_OP_DYNAMIC);
    if (cc.use_reg2) {
        tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1);
    } else {
        tcg_gen_brcondi_tl(cc.cond, cc.reg, cc.imm, l1);
    }
}

/* XXX: does not work with gdbstub "ice" single step - not a
   serious problem */
static int gen_jz_ecx_string(DisasContext *s, target_ulong next_eip)
{
    int l1, l2;

    l1 = gen_new_label();
    l2 = gen_new_label();
    gen_op_jnz_ecx(s->aflag, l1);
    gen_set_label(l2);
    gen_jmp_tb(s, next_eip, 1);
    gen_set_label(l1);
    return l2;
}

static inline void gen_stos(DisasContext *s, int ot)
{
    gen_op_mov_TN_reg(MO_32, 0, R_EAX);
    gen_string_movl_A0_EDI(s);
    gen_op_st_T0_A0(s, ot);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_EDI);
}

static inline void gen_lods(DisasContext *s, int ot)
{
    gen_string_movl_A0_ESI(s);
    gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    gen_op_mov_reg_T0(ot, R_EAX);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_ESI);
}

static inline void gen_scas(DisasContext *s, int ot)
{
    gen_string_movl_A0_EDI(s);
    gen_op_ld_T1_A0(s, ot);
    gen_op(s, OP_CMPL, ot, R_EAX);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_EDI);
}

static inline void gen_cmps(DisasContext *s, int ot)
{
    gen_string_movl_A0_EDI(s);
    gen_op_ld_T1_A0(s, ot);
    gen_string_movl_A0_ESI(s);
    gen_op(s, OP_CMPL, ot, OR_TMP0);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_ESI);
    gen_op_add_reg_T0(s->aflag, R_EDI);
}

static inline void gen_ins(DisasContext *s, int ot)
{
    if (use_icount)
        gen_io_start();
    gen_string_movl_A0_EDI(s);
    /* Note: we must do this dummy write first to be restartable in
       case of page fault. */
    gen_op_movl_T0_0();
    gen_op_st_T0_A0(s, ot);
    gen_op_mov_TN_reg(MO_16, 1, R_EDX);
    tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[1]);
    tcg_gen_andi_i32(cpu_tmp2_i32, cpu_tmp2_i32, 0xffff);
    gen_helper_in_func(ot, cpu_T[0], cpu_tmp2_i32);
    gen_op_st_T0_A0(s, ot);
    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_EDI);
    if (use_icount)
        gen_io_end();
}

static inline void gen_outs(DisasContext *s, int ot)
{
    if (use_icount)
        gen_io_start();
    gen_string_movl_A0_ESI(s);
    gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);

    gen_op_mov_TN_reg(MO_16, 1, R_EDX);
    tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[1]);
    tcg_gen_andi_i32(cpu_tmp2_i32, cpu_tmp2_i32, 0xffff);
    tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_T[0]);
    gen_helper_out_func(ot, cpu_tmp2_i32, cpu_tmp3_i32);

    gen_op_movl_T0_Dshift(ot);
    gen_op_add_reg_T0(s->aflag, R_ESI);
    if (use_icount)
        gen_io_end();
}

/* same method as Valgrind : we generate jumps to current or next
   instruction */
#define GEN_REPZ(op)                                                          \
static inline void gen_repz_ ## op(DisasContext *s, int ot,                   \
                                 target_ulong cur_eip, target_ulong next_eip) \
{                                                                             \
    int l2;\
    gen_update_cc_op(s);                                                      \
    l2 = gen_jz_ecx_string(s, next_eip);                                      \
    gen_ ## op(s, ot);                                                        \
    gen_op_add_reg_im(s->aflag, R_ECX, -1);                                   \
    /* a loop would cause two single step exceptions if ECX = 1               \
       before rep string_insn */                                              \
    if (!s->jmp_opt)                                                          \
        gen_op_jz_ecx(s->aflag, l2);                                          \
    gen_jmp(s, cur_eip);                                                      \
}

#define GEN_REPZ2(op)                                                         \
static inline void gen_repz_ ## op(DisasContext *s, int ot,                   \
                                   target_ulong cur_eip,                      \
                                   target_ulong next_eip,                     \
                                   int nz)                                    \
{                                                                             \
    int l2;\
    gen_update_cc_op(s);                                                      \
    l2 = gen_jz_ecx_string(s, next_eip);                                      \
    gen_ ## op(s, ot);                                                        \
    gen_op_add_reg_im(s->aflag, R_ECX, -1);                                   \
    gen_update_cc_op(s);                                                      \
    gen_jcc1(s, (JCC_Z << 1) | (nz ^ 1), l2);                                 \
    if (!s->jmp_opt)                                                          \
        gen_op_jz_ecx(s->aflag, l2);                                          \
    gen_jmp(s, cur_eip);                                                      \
}

GEN_REPZ(movs)
GEN_REPZ(stos)
GEN_REPZ(lods)
GEN_REPZ(ins)
GEN_REPZ(outs)
GEN_REPZ2(scas)
GEN_REPZ2(cmps)

static void gen_helper_fp_arith_ST0_FT0(int op)
{
    switch (op) {
    case 0:
        gen_helper_fadd_ST0_FT0(cpu_env);
        break;
    case 1:
        gen_helper_fmul_ST0_FT0(cpu_env);
        break;
    case 2:
        gen_helper_fcom_ST0_FT0(cpu_env);
        break;
    case 3:
        gen_helper_fcom_ST0_FT0(cpu_env);
        break;
    case 4:
        gen_helper_fsub_ST0_FT0(cpu_env);
        break;
    case 5:
        gen_helper_fsubr_ST0_FT0(cpu_env);
        break;
    case 6:
        gen_helper_fdiv_ST0_FT0(cpu_env);
        break;
    case 7:
        gen_helper_fdivr_ST0_FT0(cpu_env);
        break;
    }
}

/* NOTE the exception in "r" op ordering */
static void gen_helper_fp_arith_STN_ST0(int op, int opreg)
{
    TCGv_i32 tmp = tcg_const_i32(opreg);
    switch (op) {
    case 0:
        gen_helper_fadd_STN_ST0(cpu_env, tmp);
        break;
    case 1:
        gen_helper_fmul_STN_ST0(cpu_env, tmp);
        break;
    case 4:
        gen_helper_fsubr_STN_ST0(cpu_env, tmp);
        break;
    case 5:
        gen_helper_fsub_STN_ST0(cpu_env, tmp);
        break;
    case 6:
        gen_helper_fdivr_STN_ST0(cpu_env, tmp);
        break;
    case 7:
        gen_helper_fdiv_STN_ST0(cpu_env, tmp);
        break;
    }
}

/* if d == OR_TMP0, it means memory operand (address in A0) */
static void gen_op(DisasContext *s1, int op, int ot, int d)
{
    if (d != OR_TMP0) {
        gen_op_mov_TN_reg(ot, 0, d);
    } else {
        gen_op_ld_v(s1, ot, cpu_T[0], cpu_A0);
    }
    switch(op) {
    case OP_ADCL:
        gen_compute_eflags_c(s1, cpu_tmp4);
        tcg_gen_add_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        tcg_gen_add_tl(cpu_T[0], cpu_T[0], cpu_tmp4);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update3_cc(cpu_tmp4);
        set_cc_op(s1, CC_OP_ADCB + ot);
        break;
    case OP_SBBL:
        gen_compute_eflags_c(s1, cpu_tmp4);
        tcg_gen_sub_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        tcg_gen_sub_tl(cpu_T[0], cpu_T[0], cpu_tmp4);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update3_cc(cpu_tmp4);
        set_cc_op(s1, CC_OP_SBBB + ot);
        break;
    case OP_ADDL:
        gen_op_addl_T0_T1();
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update2_cc();
        set_cc_op(s1, CC_OP_ADDB + ot);
        break;
    case OP_SUBL:
        tcg_gen_mov_tl(cpu_cc_srcT, cpu_T[0]);
        tcg_gen_sub_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update2_cc();
        set_cc_op(s1, CC_OP_SUBB + ot);
        break;
    default:
    case OP_ANDL:
        tcg_gen_and_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update1_cc();
        set_cc_op(s1, CC_OP_LOGICB + ot);
        break;
    case OP_ORL:
        tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update1_cc();
        set_cc_op(s1, CC_OP_LOGICB + ot);
        break;
    case OP_XORL:
        tcg_gen_xor_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        if (d != OR_TMP0)
            gen_op_mov_reg_T0(ot, d);
        else
            gen_op_st_T0_A0(s1, ot);
        gen_op_update1_cc();
        set_cc_op(s1, CC_OP_LOGICB + ot);
        break;
    case OP_CMPL:
        tcg_gen_mov_tl(cpu_cc_src, cpu_T[1]);
        tcg_gen_mov_tl(cpu_cc_srcT, cpu_T[0]);
        tcg_gen_sub_tl(cpu_cc_dst, cpu_T[0], cpu_T[1]);
        set_cc_op(s1, CC_OP_SUBB + ot);
        break;
    }
}

/* if d == OR_TMP0, it means memory operand (address in A0) */
static void gen_inc(DisasContext *s1, int ot, int d, int c)
{
    if (d != OR_TMP0) {
        gen_op_mov_TN_reg(ot, 0, d);
    } else {
        gen_op_ld_v(s1, ot, cpu_T[0], cpu_A0);
    }
    gen_compute_eflags_c(s1, cpu_cc_src);
    if (c > 0) {
        tcg_gen_addi_tl(cpu_T[0], cpu_T[0], 1);
        set_cc_op(s1, CC_OP_INCB + ot);
    } else {
        tcg_gen_addi_tl(cpu_T[0], cpu_T[0], -1);
        set_cc_op(s1, CC_OP_DECB + ot);
    }
    if (d != OR_TMP0)
        gen_op_mov_reg_T0(ot, d);
    else
        gen_op_st_T0_A0(s1, ot);
    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
}

static void gen_shift_flags(DisasContext *s, int ot, TCGv result, TCGv shm1,
                            TCGv count, bool is_right)
{
    TCGv_i32 z32, s32, oldop;
    TCGv z_tl;

    /* Store the results into the CC variables.  If we know that the
       variable must be dead, store unconditionally.  Otherwise we'll
       need to not disrupt the current contents.  */
    z_tl = tcg_const_tl(0);
    if (cc_op_live[s->cc_op] & USES_CC_DST) {
        tcg_gen_movcond_tl(TCG_COND_NE, cpu_cc_dst, count, z_tl,
                           result, cpu_cc_dst);
    } else {
        tcg_gen_mov_tl(cpu_cc_dst, result);
    }
    if (cc_op_live[s->cc_op] & USES_CC_SRC) {
        tcg_gen_movcond_tl(TCG_COND_NE, cpu_cc_src, count, z_tl,
                           shm1, cpu_cc_src);
    } else {
        tcg_gen_mov_tl(cpu_cc_src, shm1);
    }
    tcg_temp_free(z_tl);

    /* Get the two potential CC_OP values into temporaries.  */
    tcg_gen_movi_i32(cpu_tmp2_i32, (is_right ? CC_OP_SARB : CC_OP_SHLB) + ot);
    if (s->cc_op == CC_OP_DYNAMIC) {
        oldop = cpu_cc_op;
    } else {
        tcg_gen_movi_i32(cpu_tmp3_i32, s->cc_op);
        oldop = cpu_tmp3_i32;
    }

    /* Conditionally store the CC_OP value.  */
    z32 = tcg_const_i32(0);
    s32 = tcg_temp_new_i32();
    tcg_gen_trunc_tl_i32(s32, count);
    tcg_gen_movcond_i32(TCG_COND_NE, cpu_cc_op, s32, z32, cpu_tmp2_i32, oldop);
    tcg_temp_free_i32(z32);
    tcg_temp_free_i32(s32);

    /* The CC_OP value is no longer predictable.  */
    set_cc_op(s, CC_OP_DYNAMIC);
}

static void gen_shift_rm_T1(DisasContext *s, int ot, int op1, 
                            int is_right, int is_arith)
{
    target_ulong mask = (ot == MO_64 ? 0x3f : 0x1f);

    /* load */
    if (op1 == OR_TMP0) {
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    } else {
        gen_op_mov_TN_reg(ot, 0, op1);
    }

    tcg_gen_andi_tl(cpu_T[1], cpu_T[1], mask);
    tcg_gen_subi_tl(cpu_tmp0, cpu_T[1], 1);

    if (is_right) {
        if (is_arith) {
            gen_exts(ot, cpu_T[0]);
            tcg_gen_sar_tl(cpu_tmp0, cpu_T[0], cpu_tmp0);
            tcg_gen_sar_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        } else {
            gen_extu(ot, cpu_T[0]);
            tcg_gen_shr_tl(cpu_tmp0, cpu_T[0], cpu_tmp0);
            tcg_gen_shr_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        }
    } else {
        tcg_gen_shl_tl(cpu_tmp0, cpu_T[0], cpu_tmp0);
        tcg_gen_shl_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
    }

    /* store */
    if (op1 == OR_TMP0) {
        gen_op_st_T0_A0(s, ot);
    } else {
        gen_op_mov_reg_T0(ot, op1);
    }

    gen_shift_flags(s, ot, cpu_T[0], cpu_tmp0, cpu_T[1], is_right);
}

static void gen_shift_rm_im(DisasContext *s, int ot, int op1, int op2,
                            int is_right, int is_arith)
{
    int mask = (ot == MO_64 ? 0x3f : 0x1f);

    /* load */
    if (op1 == OR_TMP0)
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    else
        gen_op_mov_TN_reg(ot, 0, op1);

    op2 &= mask;
    if (op2 != 0) {
        if (is_right) {
            if (is_arith) {
                gen_exts(ot, cpu_T[0]);
                tcg_gen_sari_tl(cpu_tmp4, cpu_T[0], op2 - 1);
                tcg_gen_sari_tl(cpu_T[0], cpu_T[0], op2);
            } else {
                gen_extu(ot, cpu_T[0]);
                tcg_gen_shri_tl(cpu_tmp4, cpu_T[0], op2 - 1);
                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], op2);
            }
        } else {
            tcg_gen_shli_tl(cpu_tmp4, cpu_T[0], op2 - 1);
            tcg_gen_shli_tl(cpu_T[0], cpu_T[0], op2);
        }
    }

    /* store */
    if (op1 == OR_TMP0)
        gen_op_st_T0_A0(s, ot);
    else
        gen_op_mov_reg_T0(ot, op1);
        
    /* update eflags if non zero shift */
    if (op2 != 0) {
        tcg_gen_mov_tl(cpu_cc_src, cpu_tmp4);
        tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
        set_cc_op(s, (is_right ? CC_OP_SARB : CC_OP_SHLB) + ot);
    }
}

static inline void tcg_gen_lshift(TCGv ret, TCGv arg1, target_long arg2)
{
    if (arg2 >= 0)
        tcg_gen_shli_tl(ret, arg1, arg2);
    else
        tcg_gen_shri_tl(ret, arg1, -arg2);
}

static void gen_rot_rm_T1(DisasContext *s, int ot, int op1, int is_right)
{
    target_ulong mask = (ot == MO_64 ? 0x3f : 0x1f);
    TCGv_i32 t0, t1;

    /* load */
    if (op1 == OR_TMP0) {
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    } else {
        gen_op_mov_TN_reg(ot, 0, op1);
    }

    tcg_gen_andi_tl(cpu_T[1], cpu_T[1], mask);

    switch (ot) {
    case MO_8:
        /* Replicate the 8-bit input so that a 32-bit rotate works.  */
        tcg_gen_ext8u_tl(cpu_T[0], cpu_T[0]);
        tcg_gen_muli_tl(cpu_T[0], cpu_T[0], 0x01010101);
        goto do_long;
    case MO_16:
        /* Replicate the 16-bit input so that a 32-bit rotate works.  */
        tcg_gen_deposit_tl(cpu_T[0], cpu_T[0], cpu_T[0], 16, 16);
        goto do_long;
    do_long:
#ifdef TARGET_X86_64
    case MO_32:
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_T[1]);
        if (is_right) {
            tcg_gen_rotr_i32(cpu_tmp2_i32, cpu_tmp2_i32, cpu_tmp3_i32);
        } else {
            tcg_gen_rotl_i32(cpu_tmp2_i32, cpu_tmp2_i32, cpu_tmp3_i32);
        }
        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
        break;
#endif
    default:
        if (is_right) {
            tcg_gen_rotr_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        } else {
            tcg_gen_rotl_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        }
        break;
    }

    /* store */
    if (op1 == OR_TMP0) {
        gen_op_st_T0_A0(s, ot);
    } else {
        gen_op_mov_reg_T0(ot, op1);
    }

    /* We'll need the flags computed into CC_SRC.  */
    gen_compute_eflags(s);

    /* The value that was "rotated out" is now present at the other end
       of the word.  Compute C into CC_DST and O into CC_SRC2.  Note that
       since we've computed the flags into CC_SRC, these variables are
       currently dead.  */
    if (is_right) {
        tcg_gen_shri_tl(cpu_cc_src2, cpu_T[0], mask - 1);
        tcg_gen_shri_tl(cpu_cc_dst, cpu_T[0], mask);
        tcg_gen_andi_tl(cpu_cc_dst, cpu_cc_dst, 1);
    } else {
        tcg_gen_shri_tl(cpu_cc_src2, cpu_T[0], mask);
        tcg_gen_andi_tl(cpu_cc_dst, cpu_T[0], 1);
    }
    tcg_gen_andi_tl(cpu_cc_src2, cpu_cc_src2, 1);
    tcg_gen_xor_tl(cpu_cc_src2, cpu_cc_src2, cpu_cc_dst);

    /* Now conditionally store the new CC_OP value.  If the shift count
       is 0 we keep the CC_OP_EFLAGS setting so that only CC_SRC is live.
       Otherwise reuse CC_OP_ADCOX which have the C and O flags split out
       exactly as we computed above.  */
    t0 = tcg_const_i32(0);
    t1 = tcg_temp_new_i32();
    tcg_gen_trunc_tl_i32(t1, cpu_T[1]);
    tcg_gen_movi_i32(cpu_tmp2_i32, CC_OP_ADCOX); 
    tcg_gen_movi_i32(cpu_tmp3_i32, CC_OP_EFLAGS);
    tcg_gen_movcond_i32(TCG_COND_NE, cpu_cc_op, t1, t0,
                        cpu_tmp2_i32, cpu_tmp3_i32);
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);

    /* The CC_OP value is no longer predictable.  */ 
    set_cc_op(s, CC_OP_DYNAMIC);
}

static void gen_rot_rm_im(DisasContext *s, int ot, int op1, int op2,
                          int is_right)
{
    int mask = (ot == MO_64 ? 0x3f : 0x1f);
    int shift;

    /* load */
    if (op1 == OR_TMP0) {
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    } else {
        gen_op_mov_TN_reg(ot, 0, op1);
    }

    op2 &= mask;
    if (op2 != 0) {
        switch (ot) {
#ifdef TARGET_X86_64
        case MO_32:
            tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
            if (is_right) {
                tcg_gen_rotri_i32(cpu_tmp2_i32, cpu_tmp2_i32, op2);
            } else {
                tcg_gen_rotli_i32(cpu_tmp2_i32, cpu_tmp2_i32, op2);
            }
            tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
            break;
#endif
        default:
            if (is_right) {
                tcg_gen_rotri_tl(cpu_T[0], cpu_T[0], op2);
            } else {
                tcg_gen_rotli_tl(cpu_T[0], cpu_T[0], op2);
            }
            break;
        case MO_8:
            mask = 7;
            goto do_shifts;
        case MO_16:
            mask = 15;
        do_shifts:
            shift = op2 & mask;
            if (is_right) {
                shift = mask + 1 - shift;
            }
            gen_extu(ot, cpu_T[0]);
            tcg_gen_shli_tl(cpu_tmp0, cpu_T[0], shift);
            tcg_gen_shri_tl(cpu_T[0], cpu_T[0], mask + 1 - shift);
            tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_tmp0);
            break;
        }
    }

    /* store */
    if (op1 == OR_TMP0) {
        gen_op_st_T0_A0(s, ot);
    } else {
        gen_op_mov_reg_T0(ot, op1);
    }

    if (op2 != 0) {
        /* Compute the flags into CC_SRC.  */
        gen_compute_eflags(s);

        /* The value that was "rotated out" is now present at the other end
           of the word.  Compute C into CC_DST and O into CC_SRC2.  Note that
           since we've computed the flags into CC_SRC, these variables are
           currently dead.  */
        if (is_right) {
            tcg_gen_shri_tl(cpu_cc_src2, cpu_T[0], mask - 1);
            tcg_gen_shri_tl(cpu_cc_dst, cpu_T[0], mask);
            tcg_gen_andi_tl(cpu_cc_dst, cpu_cc_dst, 1);
        } else {
            tcg_gen_shri_tl(cpu_cc_src2, cpu_T[0], mask);
            tcg_gen_andi_tl(cpu_cc_dst, cpu_T[0], 1);
        }
        tcg_gen_andi_tl(cpu_cc_src2, cpu_cc_src2, 1);
        tcg_gen_xor_tl(cpu_cc_src2, cpu_cc_src2, cpu_cc_dst);
        set_cc_op(s, CC_OP_ADCOX);
    }
}

/* XXX: add faster immediate = 1 case */
static void gen_rotc_rm_T1(DisasContext *s, int ot, int op1, 
                           int is_right)
{
    gen_compute_eflags(s);
    assert(s->cc_op == CC_OP_EFLAGS);

    /* load */
    if (op1 == OR_TMP0)
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    else
        gen_op_mov_TN_reg(ot, 0, op1);
    
    if (is_right) {
        switch (ot) {
        case MO_8:
            gen_helper_rcrb(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
        case MO_16:
            gen_helper_rcrw(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
        case MO_32:
            gen_helper_rcrl(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
#ifdef TARGET_X86_64
        case MO_64:
            gen_helper_rcrq(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
#endif
        }
    } else {
        switch (ot) {
        case MO_8:
            gen_helper_rclb(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
        case MO_16:
            gen_helper_rclw(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
        case MO_32:
            gen_helper_rcll(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
#ifdef TARGET_X86_64
        case MO_64:
            gen_helper_rclq(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]);
            break;
#endif
        }
    }
    /* store */
    if (op1 == OR_TMP0)
        gen_op_st_T0_A0(s, ot);
    else
        gen_op_mov_reg_T0(ot, op1);
}

/* XXX: add faster immediate case */
static void gen_shiftd_rm_T1(DisasContext *s, int ot, int op1,
                             bool is_right, TCGv count_in)
{
    target_ulong mask = (ot == MO_64 ? 63 : 31);
    TCGv count;

    /* load */
    if (op1 == OR_TMP0) {
        gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
    } else {
        gen_op_mov_TN_reg(ot, 0, op1);
    }

    count = tcg_temp_new();
    tcg_gen_andi_tl(count, count_in, mask);

    switch (ot) {
    case MO_16:
        /* Note: we implement the Intel behaviour for shift count > 16.
           This means "shrdw C, B, A" shifts A:B:A >> C.  Build the B:A
           portion by constructing it as a 32-bit value.  */
        if (is_right) {
            tcg_gen_deposit_tl(cpu_tmp0, cpu_T[0], cpu_T[1], 16, 16);
            tcg_gen_mov_tl(cpu_T[1], cpu_T[0]);
            tcg_gen_mov_tl(cpu_T[0], cpu_tmp0);
        } else {
            tcg_gen_deposit_tl(cpu_T[1], cpu_T[0], cpu_T[1], 16, 16);
        }
        /* FALLTHRU */
#ifdef TARGET_X86_64
    case MO_32:
        /* Concatenate the two 32-bit values and use a 64-bit shift.  */
        tcg_gen_subi_tl(cpu_tmp0, count, 1);
        if (is_right) {
            tcg_gen_concat_tl_i64(cpu_T[0], cpu_T[0], cpu_T[1]);
            tcg_gen_shr_i64(cpu_tmp0, cpu_T[0], cpu_tmp0);
            tcg_gen_shr_i64(cpu_T[0], cpu_T[0], count);
        } else {
            tcg_gen_concat_tl_i64(cpu_T[0], cpu_T[1], cpu_T[0]);
            tcg_gen_shl_i64(cpu_tmp0, cpu_T[0], cpu_tmp0);
            tcg_gen_shl_i64(cpu_T[0], cpu_T[0], count);
            tcg_gen_shri_i64(cpu_tmp0, cpu_tmp0, 32);
            tcg_gen_shri_i64(cpu_T[0], cpu_T[0], 32);
        }
        break;
#endif
    default:
        tcg_gen_subi_tl(cpu_tmp0, count, 1);
        if (is_right) {
            tcg_gen_shr_tl(cpu_tmp0, cpu_T[0], cpu_tmp0);

            tcg_gen_subfi_tl(cpu_tmp4, mask + 1, count);
            tcg_gen_shr_tl(cpu_T[0], cpu_T[0], count);
            tcg_gen_shl_tl(cpu_T[1], cpu_T[1], cpu_tmp4);
        } else {
            tcg_gen_shl_tl(cpu_tmp0, cpu_T[0], cpu_tmp0);
            if (ot == MO_16) {
                /* Only needed if count > 16, for Intel behaviour.  */
                tcg_gen_subfi_tl(cpu_tmp4, 33, count);
                tcg_gen_shr_tl(cpu_tmp4, cpu_T[1], cpu_tmp4);
                tcg_gen_or_tl(cpu_tmp0, cpu_tmp0, cpu_tmp4);
            }

            tcg_gen_subfi_tl(cpu_tmp4, mask + 1, count);
            tcg_gen_shl_tl(cpu_T[0], cpu_T[0], count);
            tcg_gen_shr_tl(cpu_T[1], cpu_T[1], cpu_tmp4);
        }
        tcg_gen_movi_tl(cpu_tmp4, 0);
        tcg_gen_movcond_tl(TCG_COND_EQ, cpu_T[1], count, cpu_tmp4,
                           cpu_tmp4, cpu_T[1]);
        tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
        break;
    }

    /* store */
    if (op1 == OR_TMP0) {
        gen_op_st_T0_A0(s, ot);
    } else {
        gen_op_mov_reg_T0(ot, op1);
    }

    gen_shift_flags(s, ot, cpu_T[0], cpu_tmp0, count, is_right);
    tcg_temp_free(count);
}

static void gen_shift(DisasContext *s1, int op, int ot, int d, int s)
{
    if (s != OR_TMP1)
        gen_op_mov_TN_reg(ot, 1, s);
    switch(op) {
    case OP_ROL:
        gen_rot_rm_T1(s1, ot, d, 0);
        break;
    case OP_ROR:
        gen_rot_rm_T1(s1, ot, d, 1);
        break;
    case OP_SHL:
    case OP_SHL1:
        gen_shift_rm_T1(s1, ot, d, 0, 0);
        break;
    case OP_SHR:
        gen_shift_rm_T1(s1, ot, d, 1, 0);
        break;
    case OP_SAR:
        gen_shift_rm_T1(s1, ot, d, 1, 1);
        break;
    case OP_RCL:
        gen_rotc_rm_T1(s1, ot, d, 0);
        break;
    case OP_RCR:
        gen_rotc_rm_T1(s1, ot, d, 1);
        break;
    }
}

static void gen_shifti(DisasContext *s1, int op, int ot, int d, int c)
{
    switch(op) {
    case OP_ROL:
        gen_rot_rm_im(s1, ot, d, c, 0);
        break;
    case OP_ROR:
        gen_rot_rm_im(s1, ot, d, c, 1);
        break;
    case OP_SHL:
    case OP_SHL1:
        gen_shift_rm_im(s1, ot, d, c, 0, 0);
        break;
    case OP_SHR:
        gen_shift_rm_im(s1, ot, d, c, 1, 0);
        break;
    case OP_SAR:
        gen_shift_rm_im(s1, ot, d, c, 1, 1);
        break;
    default:
        /* currently not optimized */
        gen_op_movl_T1_im(c);
        gen_shift(s1, op, ot, d, OR_TMP1);
        break;
    }
}

static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm,
                          int *reg_ptr, int *offset_ptr)
{
    target_long disp;
    int havesib;
    int base;
    int index;
    int scale;
    int opreg;
    int mod, rm, code, override, must_add_seg;
    TCGv sum;

    override = s->override;
    must_add_seg = s->addseg;
    if (override >= 0)
        must_add_seg = 1;
    mod = (modrm >> 6) & 3;
    rm = modrm & 7;

    if (s->aflag) {
        havesib = 0;
        base = rm;
        index = -1;
        scale = 0;

        if (base == 4) {
            havesib = 1;
            code = cpu_ldub_code(env, s->pc++);
            scale = (code >> 6) & 3;
            index = ((code >> 3) & 7) | REX_X(s);
            if (index == 4) {
                index = -1;  /* no index */
            }
            base = (code & 7);
        }
        base |= REX_B(s);

        switch (mod) {
        case 0:
            if ((base & 7) == 5) {
                base = -1;
                disp = (int32_t)cpu_ldl_code(env, s->pc);
                s->pc += 4;
                if (CODE64(s) && !havesib) {
                    disp += s->pc + s->rip_offset;
                }
            } else {
                disp = 0;
            }
            break;
        case 1:
            disp = (int8_t)cpu_ldub_code(env, s->pc++);
            break;
        default:
        case 2:
            disp = (int32_t)cpu_ldl_code(env, s->pc);
            s->pc += 4;
            break;
        }

        /* For correct popl handling with esp.  */
        if (base == R_ESP && s->popl_esp_hack) {
            disp += s->popl_esp_hack;
        }

        /* Compute the address, with a minimum number of TCG ops.  */
        TCGV_UNUSED(sum);
        if (index >= 0) {
            if (scale == 0) {
                sum = cpu_regs[index];
            } else {
                tcg_gen_shli_tl(cpu_A0, cpu_regs[index], scale);
                sum = cpu_A0;
            }
            if (base >= 0) {
                tcg_gen_add_tl(cpu_A0, sum, cpu_regs[base]);
                sum = cpu_A0;
            }
        } else if (base >= 0) {
            sum = cpu_regs[base];
        }
        if (TCGV_IS_UNUSED(sum)) {
            tcg_gen_movi_tl(cpu_A0, disp);
        } else {
            tcg_gen_addi_tl(cpu_A0, sum, disp);
        }

        if (must_add_seg) {
            if (override < 0) {
                if (base == R_EBP || base == R_ESP) {
                    override = R_SS;
                } else {
                    override = R_DS;
                }
            }

            tcg_gen_ld_tl(cpu_tmp0, cpu_env,
                          offsetof(CPUX86State, segs[override].base));
            if (CODE64(s)) {
                if (s->aflag != 2) {
                    tcg_gen_ext32u_tl(cpu_A0, cpu_A0);
                }
                tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
                goto done;
            }

            tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
        }

        if (s->aflag != 2) {
            tcg_gen_ext32u_tl(cpu_A0, cpu_A0);
        }
    } else {
        switch (mod) {
        case 0:
            if (rm == 6) {
                disp = cpu_lduw_code(env, s->pc);
                s->pc += 2;
                gen_op_movl_A0_im(disp);
                rm = 0; /* avoid SS override */
                goto no_rm;
            } else {
                disp = 0;
            }
            break;
        case 1:
            disp = (int8_t)cpu_ldub_code(env, s->pc++);
            break;
        default:
        case 2:
            disp = cpu_lduw_code(env, s->pc);
            s->pc += 2;
            break;
        }
        switch(rm) {
        case 0:
            gen_op_movl_A0_reg(R_EBX);
            gen_op_addl_A0_reg_sN(0, R_ESI);
            break;
        case 1:
            gen_op_movl_A0_reg(R_EBX);
            gen_op_addl_A0_reg_sN(0, R_EDI);
            break;
        case 2:
            gen_op_movl_A0_reg(R_EBP);
            gen_op_addl_A0_reg_sN(0, R_ESI);
            break;
        case 3:
            gen_op_movl_A0_reg(R_EBP);
            gen_op_addl_A0_reg_sN(0, R_EDI);
            break;
        case 4:
            gen_op_movl_A0_reg(R_ESI);
            break;
        case 5:
            gen_op_movl_A0_reg(R_EDI);
            break;
        case 6:
            gen_op_movl_A0_reg(R_EBP);
            break;
        default:
        case 7:
            gen_op_movl_A0_reg(R_EBX);
            break;
        }
        if (disp != 0)
            gen_op_addl_A0_im(disp);
        gen_op_andl_A0_ffff();
    no_rm:
        if (must_add_seg) {
            if (override < 0) {
                if (rm == 2 || rm == 3 || rm == 6)
                    override = R_SS;
                else
                    override = R_DS;
            }
            gen_op_addl_A0_seg(s, override);
        }
    }

 done:
    opreg = OR_A0;
    disp = 0;
    *reg_ptr = opreg;
    *offset_ptr = disp;
}

static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm)
{
    int mod, rm, base, code;

    mod = (modrm >> 6) & 3;
    if (mod == 3)
        return;
    rm = modrm & 7;

    if (s->aflag) {

        base = rm;

        if (base == 4) {
            code = cpu_ldub_code(env, s->pc++);
            base = (code & 7);
        }

        switch (mod) {
        case 0:
            if (base == 5) {
                s->pc += 4;
            }
            break;
        case 1:
            s->pc++;
            break;
        default:
        case 2:
            s->pc += 4;
            break;
        }
    } else {
        switch (mod) {
        case 0:
            if (rm == 6) {
                s->pc += 2;
            }
            break;
        case 1:
            s->pc++;
            break;
        default:
        case 2:
            s->pc += 2;
            break;
        }
    }
}

/* used for LEA and MOV AX, mem */
static void gen_add_A0_ds_seg(DisasContext *s)
{
    int override, must_add_seg;
    must_add_seg = s->addseg;
    override = R_DS;
    if (s->override >= 0) {
        override = s->override;
        must_add_seg = 1;
    }
    if (must_add_seg) {
#ifdef TARGET_X86_64
        if (CODE64(s)) {
            gen_op_addq_A0_seg(override);
        } else
#endif
        {
            gen_op_addl_A0_seg(s, override);
        }
    }
}

/* generate modrm memory load or store of 'reg'. TMP0 is used if reg ==
   OR_TMP0 */
static void gen_ldst_modrm(CPUX86State *env, DisasContext *s, int modrm,
                           int ot, int reg, int is_store)
{
    int mod, rm, opreg, disp;

    mod = (modrm >> 6) & 3;
    rm = (modrm & 7) | REX_B(s);
    if (mod == 3) {
        if (is_store) {
            if (reg != OR_TMP0)
                gen_op_mov_TN_reg(ot, 0, reg);
            gen_op_mov_reg_T0(ot, rm);
        } else {
            gen_op_mov_TN_reg(ot, 0, rm);
            if (reg != OR_TMP0)
                gen_op_mov_reg_T0(ot, reg);
        }
    } else {
        gen_lea_modrm(env, s, modrm, &opreg, &disp);
        if (is_store) {
            if (reg != OR_TMP0)
                gen_op_mov_TN_reg(ot, 0, reg);
            gen_op_st_T0_A0(s, ot);
        } else {
            gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
            if (reg != OR_TMP0)
                gen_op_mov_reg_T0(ot, reg);
        }
    }
}

static inline uint32_t insn_get(CPUX86State *env, DisasContext *s, int ot)
{
    uint32_t ret;

    switch(ot) {
    case MO_8:
        ret = cpu_ldub_code(env, s->pc);
        s->pc++;
        break;
    case MO_16:
        ret = cpu_lduw_code(env, s->pc);
        s->pc += 2;
        break;
    default:
    case MO_32:
        ret = cpu_ldl_code(env, s->pc);
        s->pc += 4;
        break;
    }
    return ret;
}

static inline int insn_const_size(unsigned int ot)
{
    if (ot <= MO_32) {
        return 1 << ot;
    } else {
        return 4;
    }
}

static inline void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip)
{
    TranslationBlock *tb;
    target_ulong pc;

    pc = s->cs_base + eip;
    tb = s->tb;
    /* NOTE: we handle the case where the TB spans two pages here */
    if ((pc & TARGET_PAGE_MASK) == (tb->pc & TARGET_PAGE_MASK) ||
        (pc & TARGET_PAGE_MASK) == ((s->pc - 1) & TARGET_PAGE_MASK))  {
        /* jump to same page: we can use a direct jump */
        tcg_gen_goto_tb(tb_num);
        gen_jmp_im(eip);
        tcg_gen_exit_tb((uintptr_t)tb + tb_num);
    } else {
        /* jump to another page: currently not optimized */
        gen_jmp_im(eip);
        gen_eob(s);
    }
}

static inline void gen_jcc(DisasContext *s, int b,
                           target_ulong val, target_ulong next_eip)
{
    int l1, l2;

    if (s->jmp_opt) {
        l1 = gen_new_label();
        gen_jcc1(s, b, l1);

        gen_goto_tb(s, 0, next_eip);

        gen_set_label(l1);
        gen_goto_tb(s, 1, val);
        s->is_jmp = DISAS_TB_JUMP;
    } else {
        l1 = gen_new_label();
        l2 = gen_new_label();
        gen_jcc1(s, b, l1);

        gen_jmp_im(next_eip);
        tcg_gen_br(l2);

        gen_set_label(l1);
        gen_jmp_im(val);
        gen_set_label(l2);
        gen_eob(s);
    }
}

static void gen_cmovcc1(CPUX86State *env, DisasContext *s, int ot, int b,
                        int modrm, int reg)
{
    CCPrepare cc;

    gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);

    cc = gen_prepare_cc(s, b, cpu_T[1]);
    if (cc.mask != -1) {
        TCGv t0 = tcg_temp_new();
        tcg_gen_andi_tl(t0, cc.reg, cc.mask);
        cc.reg = t0;
    }
    if (!cc.use_reg2) {
        cc.reg2 = tcg_const_tl(cc.imm);
    }

    tcg_gen_movcond_tl(cc.cond, cpu_T[0], cc.reg, cc.reg2,
                       cpu_T[0], cpu_regs[reg]);
    gen_op_mov_reg_T0(ot, reg);

    if (cc.mask != -1) {
        tcg_temp_free(cc.reg);
    }
    if (!cc.use_reg2) {
        tcg_temp_free(cc.reg2);
    }
}

static inline void gen_op_movl_T0_seg(int seg_reg)
{
    tcg_gen_ld32u_tl(cpu_T[0], cpu_env, 
                     offsetof(CPUX86State,segs[seg_reg].selector));
}

static inline void gen_op_movl_seg_T0_vm(int seg_reg)
{
    tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xffff);
    tcg_gen_st32_tl(cpu_T[0], cpu_env, 
                    offsetof(CPUX86State,segs[seg_reg].selector));
    tcg_gen_shli_tl(cpu_T[0], cpu_T[0], 4);
    tcg_gen_st_tl(cpu_T[0], cpu_env, 
                  offsetof(CPUX86State,segs[seg_reg].base));
}

/* move T0 to seg_reg and compute if the CPU state may change. Never
   call this function with seg_reg == R_CS */
static void gen_movl_seg_T0(DisasContext *s, int seg_reg, target_ulong cur_eip)
{
    if (s->pe && !s->vm86) {
        /* XXX: optimize by finding processor state dynamically */
        gen_update_cc_op(s);
        gen_jmp_im(cur_eip);
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        gen_helper_load_seg(cpu_env, tcg_const_i32(seg_reg), cpu_tmp2_i32);
        /* abort translation because the addseg value may change or
           because ss32 may change. For R_SS, translation must always
           stop as a special handling must be done to disable hardware
           interrupts for the next instruction */
        if (seg_reg == R_SS || (s->code32 && seg_reg < R_FS))
            s->is_jmp = DISAS_TB_JUMP;
    } else {
        gen_op_movl_seg_T0_vm(seg_reg);
        if (seg_reg == R_SS)
            s->is_jmp = DISAS_TB_JUMP;
    }
}

static inline int svm_is_rep(int prefixes)
{
    return ((prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) ? 8 : 0);
}

static inline void
gen_svm_check_intercept_param(DisasContext *s, target_ulong pc_start,
                              uint32_t type, uint64_t param)
{
    /* no SVM activated; fast case */
    if (likely(!(s->flags & HF_SVMI_MASK)))
        return;
    gen_update_cc_op(s);
    gen_jmp_im(pc_start - s->cs_base);
    gen_helper_svm_check_intercept_param(cpu_env, tcg_const_i32(type),
                                         tcg_const_i64(param));
}

static inline void
gen_svm_check_intercept(DisasContext *s, target_ulong pc_start, uint64_t type)
{
    gen_svm_check_intercept_param(s, pc_start, type, 0);
}

static inline void gen_stack_update(DisasContext *s, int addend)
{
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        gen_op_add_reg_im(2, R_ESP, addend);
    } else
#endif
    if (s->ss32) {
        gen_op_add_reg_im(1, R_ESP, addend);
    } else {
        gen_op_add_reg_im(0, R_ESP, addend);
    }
}

/* generate a push. It depends on ss32, addseg and dflag */
static void gen_push_T0(DisasContext *s)
{
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        gen_op_movq_A0_reg(R_ESP);
        if (s->dflag) {
            gen_op_addq_A0_im(-8);
            gen_op_st_T0_A0(s, MO_64);
        } else {
            gen_op_addq_A0_im(-2);
            gen_op_st_T0_A0(s, MO_16);
        }
        gen_op_mov_reg_A0(2, R_ESP);
    } else
#endif
    {
        gen_op_movl_A0_reg(R_ESP);
        if (!s->dflag)
            gen_op_addl_A0_im(-2);
        else
            gen_op_addl_A0_im(-4);
        if (s->ss32) {
            if (s->addseg) {
                tcg_gen_mov_tl(cpu_T[1], cpu_A0);
                gen_op_addl_A0_seg(s, R_SS);
            }
        } else {
            gen_op_andl_A0_ffff();
            tcg_gen_mov_tl(cpu_T[1], cpu_A0);
            gen_op_addl_A0_seg(s, R_SS);
        }
        gen_op_st_T0_A0(s, s->dflag + 1);
        if (s->ss32 && !s->addseg)
            gen_op_mov_reg_A0(1, R_ESP);
        else
            gen_op_mov_reg_T1(s->ss32 + 1, R_ESP);
    }
}

/* generate a push. It depends on ss32, addseg and dflag */
/* slower version for T1, only used for call Ev */
static void gen_push_T1(DisasContext *s)
{
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        gen_op_movq_A0_reg(R_ESP);
        if (s->dflag) {
            gen_op_addq_A0_im(-8);
            gen_op_st_T1_A0(s, MO_64);
        } else {
            gen_op_addq_A0_im(-2);
            gen_op_st_T0_A0(s, MO_16);
        }
        gen_op_mov_reg_A0(2, R_ESP);
    } else
#endif
    {
        gen_op_movl_A0_reg(R_ESP);
        if (!s->dflag)
            gen_op_addl_A0_im(-2);
        else
            gen_op_addl_A0_im(-4);
        if (s->ss32) {
            if (s->addseg) {
                gen_op_addl_A0_seg(s, R_SS);
            }
        } else {
            gen_op_andl_A0_ffff();
            gen_op_addl_A0_seg(s, R_SS);
        }
        gen_op_st_T1_A0(s, s->dflag + 1);

        if (s->ss32 && !s->addseg)
            gen_op_mov_reg_A0(1, R_ESP);
        else
            gen_stack_update(s, (-2) << s->dflag);
    }
}

/* two step pop is necessary for precise exceptions */
static void gen_pop_T0(DisasContext *s)
{
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        gen_op_movq_A0_reg(R_ESP);
        gen_op_ld_v(s, s->dflag ? MO_64 : MO_16, cpu_T[0], cpu_A0);
    } else
#endif
    {
        gen_op_movl_A0_reg(R_ESP);
        if (s->ss32) {
            if (s->addseg)
                gen_op_addl_A0_seg(s, R_SS);
        } else {
            gen_op_andl_A0_ffff();
            gen_op_addl_A0_seg(s, R_SS);
        }
        gen_op_ld_v(s, s->dflag + 1, cpu_T[0], cpu_A0);
    }
}

static void gen_pop_update(DisasContext *s)
{
#ifdef TARGET_X86_64
    if (CODE64(s) && s->dflag) {
        gen_stack_update(s, 8);
    } else
#endif
    {
        gen_stack_update(s, 2 << s->dflag);
    }
}

static void gen_stack_A0(DisasContext *s)
{
    gen_op_movl_A0_reg(R_ESP);
    if (!s->ss32)
        gen_op_andl_A0_ffff();
    tcg_gen_mov_tl(cpu_T[1], cpu_A0);
    if (s->addseg)
        gen_op_addl_A0_seg(s, R_SS);
}

/* NOTE: wrap around in 16 bit not fully handled */
static void gen_pusha(DisasContext *s)
{
    int i;
    gen_op_movl_A0_reg(R_ESP);
    gen_op_addl_A0_im(-16 <<  s->dflag);
    if (!s->ss32)
        gen_op_andl_A0_ffff();
    tcg_gen_mov_tl(cpu_T[1], cpu_A0);
    if (s->addseg)
        gen_op_addl_A0_seg(s, R_SS);
    for(i = 0;i < 8; i++) {
        gen_op_mov_TN_reg(MO_32, 0, 7 - i);
        gen_op_st_T0_A0(s, MO_16 + s->dflag);
        gen_op_addl_A0_im(2 <<  s->dflag);
    }
    gen_op_mov_reg_T1(MO_16 + s->ss32, R_ESP);
}

/* NOTE: wrap around in 16 bit not fully handled */
static void gen_popa(DisasContext *s)
{
    int i;
    gen_op_movl_A0_reg(R_ESP);
    if (!s->ss32)
        gen_op_andl_A0_ffff();
    tcg_gen_mov_tl(cpu_T[1], cpu_A0);
    tcg_gen_addi_tl(cpu_T[1], cpu_T[1], 16 <<  s->dflag);
    if (s->addseg)
        gen_op_addl_A0_seg(s, R_SS);
    for(i = 0;i < 8; i++) {
        /* ESP is not reloaded */
        if (i != 3) {
            gen_op_ld_v(s, MO_16 + s->dflag, cpu_T[0], cpu_A0);
            gen_op_mov_reg_T0(MO_16 + s->dflag, 7 - i);
        }
        gen_op_addl_A0_im(2 <<  s->dflag);
    }
    gen_op_mov_reg_T1(MO_16 + s->ss32, R_ESP);
}

static void gen_enter(DisasContext *s, int esp_addend, int level)
{
    int ot, opsize;

    level &= 0x1f;
#ifdef TARGET_X86_64
    if (CODE64(s)) {
        ot = s->dflag ? MO_64 : MO_16;
        opsize = 1 << ot;

        gen_op_movl_A0_reg(R_ESP);
        gen_op_addq_A0_im(-opsize);
        tcg_gen_mov_tl(cpu_T[1], cpu_A0);

        /* push bp */
        gen_op_mov_TN_reg(MO_32, 0, R_EBP);
        gen_op_st_T0_A0(s, ot);
        if (level) {
            /* XXX: must save state */
            gen_helper_enter64_level(cpu_env, tcg_const_i32(level),
                                     tcg_const_i32((ot == MO_64)),
                                     cpu_T[1]);
        }
        gen_op_mov_reg_T1(ot, R_EBP);
        tcg_gen_addi_tl(cpu_T[1], cpu_T[1], -esp_addend + (-opsize * level));
        gen_op_mov_reg_T1(MO_64, R_ESP);
    } else
#endif
    {
        ot = s->dflag + MO_16;
        opsize = 2 << s->dflag;

        gen_op_movl_A0_reg(R_ESP);
        gen_op_addl_A0_im(-opsize);
        if (!s->ss32)
            gen_op_andl_A0_ffff();
        tcg_gen_mov_tl(cpu_T[1], cpu_A0);
        if (s->addseg)
            gen_op_addl_A0_seg(s, R_SS);
        /* push bp */
        gen_op_mov_TN_reg(MO_32, 0, R_EBP);
        gen_op_st_T0_A0(s, ot);
        if (level) {
            /* XXX: must save state */
            gen_helper_enter_level(cpu_env, tcg_const_i32(level),
                                   tcg_const_i32(s->dflag),
                                   cpu_T[1]);
        }
        gen_op_mov_reg_T1(ot, R_EBP);
        tcg_gen_addi_tl(cpu_T[1], cpu_T[1], -esp_addend + (-opsize * level));
        gen_op_mov_reg_T1(MO_16 + s->ss32, R_ESP);
    }
}

static void gen_exception(DisasContext *s, int trapno, target_ulong cur_eip)
{
    gen_update_cc_op(s);
    gen_jmp_im(cur_eip);
    gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno));
    s->is_jmp = DISAS_TB_JUMP;
}

/* an interrupt is different from an exception because of the
   privilege checks */
static void gen_interrupt(DisasContext *s, int intno,
                          target_ulong cur_eip, target_ulong next_eip)
{
    gen_update_cc_op(s);
    gen_jmp_im(cur_eip);
    gen_helper_raise_interrupt(cpu_env, tcg_const_i32(intno),
                               tcg_const_i32(next_eip - cur_eip));
    s->is_jmp = DISAS_TB_JUMP;
}

static void gen_debug(DisasContext *s, target_ulong cur_eip)
{
    gen_update_cc_op(s);
    gen_jmp_im(cur_eip);
    gen_helper_debug(cpu_env);
    s->is_jmp = DISAS_TB_JUMP;
}

/* generate a generic end of block. Trace exception is also generated
   if needed */
static void gen_eob(DisasContext *s)
{
    gen_update_cc_op(s);
    if (s->tb->flags & HF_INHIBIT_IRQ_MASK) {
        gen_helper_reset_inhibit_irq(cpu_env);
    }
    if (s->tb->flags & HF_RF_MASK) {
        gen_helper_reset_rf(cpu_env);
    }
    if (s->singlestep_enabled) {
        gen_helper_debug(cpu_env);
    } else if (s->tf) {
        gen_helper_single_step(cpu_env);
    } else {
        tcg_gen_exit_tb(0);
    }
    s->is_jmp = DISAS_TB_JUMP;
}

/* generate a jump to eip. No segment change must happen before as a
   direct call to the next block may occur */
static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num)
{
    gen_update_cc_op(s);
    set_cc_op(s, CC_OP_DYNAMIC);
    if (s->jmp_opt) {
        gen_goto_tb(s, tb_num, eip);
        s->is_jmp = DISAS_TB_JUMP;
    } else {
        gen_jmp_im(eip);
        gen_eob(s);
    }
}

static void gen_jmp(DisasContext *s, target_ulong eip)
{
    gen_jmp_tb(s, eip, 0);
}

static inline void gen_ldq_env_A0(DisasContext *s, int offset)
{
    tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0, s->mem_index, MO_LEQ);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, offset);
}

static inline void gen_stq_env_A0(DisasContext *s, int offset)
{
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, offset);
    tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0, s->mem_index, MO_LEQ);
}

static inline void gen_ldo_env_A0(DisasContext *s, int offset)
{
    int mem_index = s->mem_index;
    tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0, mem_index, MO_LEQ);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(0)));
    tcg_gen_addi_tl(cpu_tmp0, cpu_A0, 8);
    tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_tmp0, mem_index, MO_LEQ);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(1)));
}

static inline void gen_sto_env_A0(DisasContext *s, int offset)
{
    int mem_index = s->mem_index;
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(0)));
    tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0, mem_index, MO_LEQ);
    tcg_gen_addi_tl(cpu_tmp0, cpu_A0, 8);
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(1)));
    tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_tmp0, mem_index, MO_LEQ);
}

static inline void gen_op_movo(int d_offset, int s_offset)
{
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, s_offset);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, d_offset);
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, s_offset + 8);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, d_offset + 8);
}

static inline void gen_op_movq(int d_offset, int s_offset)
{
    tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env, s_offset);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, d_offset);
}

static inline void gen_op_movl(int d_offset, int s_offset)
{
    tcg_gen_ld_i32(cpu_tmp2_i32, cpu_env, s_offset);
    tcg_gen_st_i32(cpu_tmp2_i32, cpu_env, d_offset);
}

static inline void gen_op_movq_env_0(int d_offset)
{
    tcg_gen_movi_i64(cpu_tmp1_i64, 0);
    tcg_gen_st_i64(cpu_tmp1_i64, cpu_env, d_offset);
}

typedef void (*SSEFunc_i_ep)(TCGv_i32 val, TCGv_ptr env, TCGv_ptr reg);
typedef void (*SSEFunc_l_ep)(TCGv_i64 val, TCGv_ptr env, TCGv_ptr reg);
typedef void (*SSEFunc_0_epi)(TCGv_ptr env, TCGv_ptr reg, TCGv_i32 val);
typedef void (*SSEFunc_0_epl)(TCGv_ptr env, TCGv_ptr reg, TCGv_i64 val);
typedef void (*SSEFunc_0_epp)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b);
typedef void (*SSEFunc_0_eppi)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
                               TCGv_i32 val);
typedef void (*SSEFunc_0_ppi)(TCGv_ptr reg_a, TCGv_ptr reg_b, TCGv_i32 val);
typedef void (*SSEFunc_0_eppt)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
                               TCGv val);

#define SSE_SPECIAL ((void *)1)
#define SSE_DUMMY ((void *)2)

#define MMX_OP2(x) { gen_helper_ ## x ## _mmx, gen_helper_ ## x ## _xmm }
#define SSE_FOP(x) { gen_helper_ ## x ## ps, gen_helper_ ## x ## pd, \
                     gen_helper_ ## x ## ss, gen_helper_ ## x ## sd, }

static const SSEFunc_0_epp sse_op_table1[256][4] = {
    /* 3DNow! extensions */
    [0x0e] = { SSE_DUMMY }, /* femms */
    [0x0f] = { SSE_DUMMY }, /* pf... */
    /* pure SSE operations */
    [0x10] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movups, movupd, movss, movsd */
    [0x11] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movups, movupd, movss, movsd */
    [0x12] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movlps, movlpd, movsldup, movddup */
    [0x13] = { SSE_SPECIAL, SSE_SPECIAL },  /* movlps, movlpd */
    [0x14] = { gen_helper_punpckldq_xmm, gen_helper_punpcklqdq_xmm },
    [0x15] = { gen_helper_punpckhdq_xmm, gen_helper_punpckhqdq_xmm },
    [0x16] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL },  /* movhps, movhpd, movshdup */
    [0x17] = { SSE_SPECIAL, SSE_SPECIAL },  /* movhps, movhpd */

    [0x28] = { SSE_SPECIAL, SSE_SPECIAL },  /* movaps, movapd */
    [0x29] = { SSE_SPECIAL, SSE_SPECIAL },  /* movaps, movapd */
    [0x2a] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* cvtpi2ps, cvtpi2pd, cvtsi2ss, cvtsi2sd */
    [0x2b] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movntps, movntpd, movntss, movntsd */
    [0x2c] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* cvttps2pi, cvttpd2pi, cvttsd2si, cvttss2si */
    [0x2d] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* cvtps2pi, cvtpd2pi, cvtsd2si, cvtss2si */
    [0x2e] = { gen_helper_ucomiss, gen_helper_ucomisd },
    [0x2f] = { gen_helper_comiss, gen_helper_comisd },
    [0x50] = { SSE_SPECIAL, SSE_SPECIAL }, /* movmskps, movmskpd */
    [0x51] = SSE_FOP(sqrt),
    [0x52] = { gen_helper_rsqrtps, NULL, gen_helper_rsqrtss, NULL },
    [0x53] = { gen_helper_rcpps, NULL, gen_helper_rcpss, NULL },
    [0x54] = { gen_helper_pand_xmm, gen_helper_pand_xmm }, /* andps, andpd */
    [0x55] = { gen_helper_pandn_xmm, gen_helper_pandn_xmm }, /* andnps, andnpd */
    [0x56] = { gen_helper_por_xmm, gen_helper_por_xmm }, /* orps, orpd */
    [0x57] = { gen_helper_pxor_xmm, gen_helper_pxor_xmm }, /* xorps, xorpd */
    [0x58] = SSE_FOP(add),
    [0x59] = SSE_FOP(mul),
    [0x5a] = { gen_helper_cvtps2pd, gen_helper_cvtpd2ps,
               gen_helper_cvtss2sd, gen_helper_cvtsd2ss },
    [0x5b] = { gen_helper_cvtdq2ps, gen_helper_cvtps2dq, gen_helper_cvttps2dq },
    [0x5c] = SSE_FOP(sub),
    [0x5d] = SSE_FOP(min),
    [0x5e] = SSE_FOP(div),
    [0x5f] = SSE_FOP(max),

    [0xc2] = SSE_FOP(cmpeq),
    [0xc6] = { (SSEFunc_0_epp)gen_helper_shufps,
               (SSEFunc_0_epp)gen_helper_shufpd }, /* XXX: casts */

    /* SSSE3, SSE4, MOVBE, CRC32, BMI1, BMI2, ADX.  */
    [0x38] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL },
    [0x3a] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL },

    /* MMX ops and their SSE extensions */
    [0x60] = MMX_OP2(punpcklbw),
    [0x61] = MMX_OP2(punpcklwd),
    [0x62] = MMX_OP2(punpckldq),
    [0x63] = MMX_OP2(packsswb),
    [0x64] = MMX_OP2(pcmpgtb),
    [0x65] = MMX_OP2(pcmpgtw),
    [0x66] = MMX_OP2(pcmpgtl),
    [0x67] = MMX_OP2(packuswb),
    [0x68] = MMX_OP2(punpckhbw),
    [0x69] = MMX_OP2(punpckhwd),
    [0x6a] = MMX_OP2(punpckhdq),
    [0x6b] = MMX_OP2(packssdw),
    [0x6c] = { NULL, gen_helper_punpcklqdq_xmm },
    [0x6d] = { NULL, gen_helper_punpckhqdq_xmm },
    [0x6e] = { SSE_SPECIAL, SSE_SPECIAL }, /* movd mm, ea */
    [0x6f] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movq, movdqa, , movqdu */
    [0x70] = { (SSEFunc_0_epp)gen_helper_pshufw_mmx,
               (SSEFunc_0_epp)gen_helper_pshufd_xmm,
               (SSEFunc_0_epp)gen_helper_pshufhw_xmm,
               (SSEFunc_0_epp)gen_helper_pshuflw_xmm }, /* XXX: casts */
    [0x71] = { SSE_SPECIAL, SSE_SPECIAL }, /* shiftw */
    [0x72] = { SSE_SPECIAL, SSE_SPECIAL }, /* shiftd */
    [0x73] = { SSE_SPECIAL, SSE_SPECIAL }, /* shiftq */
    [0x74] = MMX_OP2(pcmpeqb),
    [0x75] = MMX_OP2(pcmpeqw),
    [0x76] = MMX_OP2(pcmpeql),
    [0x77] = { SSE_DUMMY }, /* emms */
    [0x78] = { NULL, SSE_SPECIAL, NULL, SSE_SPECIAL }, /* extrq_i, insertq_i */
    [0x79] = { NULL, gen_helper_extrq_r, NULL, gen_helper_insertq_r },
    [0x7c] = { NULL, gen_helper_haddpd, NULL, gen_helper_haddps },
    [0x7d] = { NULL, gen_helper_hsubpd, NULL, gen_helper_hsubps },
    [0x7e] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movd, movd, , movq */
    [0x7f] = { SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL }, /* movq, movdqa, movdqu */
    [0xc4] = { SSE_SPECIAL, SSE_SPECIAL }, /* pinsrw */
    [0xc5] = { SSE_SPECIAL, SSE_SPECIAL }, /* pextrw */
    [0xd0] = { NULL, gen_helper_addsubpd, NULL, gen_helper_addsubps },
    [0xd1] = MMX_OP2(psrlw),
    [0xd2] = MMX_OP2(psrld),
    [0xd3] = MMX_OP2(psrlq),
    [0xd4] = MMX_OP2(paddq),
    [0xd5] = MMX_OP2(pmullw),
    [0xd6] = { NULL, SSE_SPECIAL, SSE_SPECIAL, SSE_SPECIAL },
    [0xd7] = { SSE_SPECIAL, SSE_SPECIAL }, /* pmovmskb */
    [0xd8] = MMX_OP2(psubusb),
    [0xd9] = MMX_OP2(psubusw),
    [0xda] = MMX_OP2(pminub),
    [0xdb] = MMX_OP2(pand),
    [0xdc] = MMX_OP2(paddusb),
    [0xdd] = MMX_OP2(paddusw),
    [0xde] = MMX_OP2(pmaxub),
    [0xdf] = MMX_OP2(pandn),
    [0xe0] = MMX_OP2(pavgb),
    [0xe1] = MMX_OP2(psraw),
    [0xe2] = MMX_OP2(psrad),
    [0xe3] = MMX_OP2(pavgw),
    [0xe4] = MMX_OP2(pmulhuw),
    [0xe5] = MMX_OP2(pmulhw),
    [0xe6] = { NULL, gen_helper_cvttpd2dq, gen_helper_cvtdq2pd, gen_helper_cvtpd2dq },
    [0xe7] = { SSE_SPECIAL , SSE_SPECIAL },  /* movntq, movntq */
    [0xe8] = MMX_OP2(psubsb),
    [0xe9] = MMX_OP2(psubsw),
    [0xea] = MMX_OP2(pminsw),
    [0xeb] = MMX_OP2(por),
    [0xec] = MMX_OP2(paddsb),
    [0xed] = MMX_OP2(paddsw),
    [0xee] = MMX_OP2(pmaxsw),
    [0xef] = MMX_OP2(pxor),
    [0xf0] = { NULL, NULL, NULL, SSE_SPECIAL }, /* lddqu */
    [0xf1] = MMX_OP2(psllw),
    [0xf2] = MMX_OP2(pslld),
    [0xf3] = MMX_OP2(psllq),
    [0xf4] = MMX_OP2(pmuludq),
    [0xf5] = MMX_OP2(pmaddwd),
    [0xf6] = MMX_OP2(psadbw),
    [0xf7] = { (SSEFunc_0_epp)gen_helper_maskmov_mmx,
               (SSEFunc_0_epp)gen_helper_maskmov_xmm }, /* XXX: casts */
    [0xf8] = MMX_OP2(psubb),
    [0xf9] = MMX_OP2(psubw),
    [0xfa] = MMX_OP2(psubl),
    [0xfb] = MMX_OP2(psubq),
    [0xfc] = MMX_OP2(paddb),
    [0xfd] = MMX_OP2(paddw),
    [0xfe] = MMX_OP2(paddl),
};

static const SSEFunc_0_epp sse_op_table2[3 * 8][2] = {
    [0 + 2] = MMX_OP2(psrlw),
    [0 + 4] = MMX_OP2(psraw),
    [0 + 6] = MMX_OP2(psllw),
    [8 + 2] = MMX_OP2(psrld),
    [8 + 4] = MMX_OP2(psrad),
    [8 + 6] = MMX_OP2(pslld),
    [16 + 2] = MMX_OP2(psrlq),
    [16 + 3] = { NULL, gen_helper_psrldq_xmm },
    [16 + 6] = MMX_OP2(psllq),
    [16 + 7] = { NULL, gen_helper_pslldq_xmm },
};

static const SSEFunc_0_epi sse_op_table3ai[] = {
    gen_helper_cvtsi2ss,
    gen_helper_cvtsi2sd
};

#ifdef TARGET_X86_64
static const SSEFunc_0_epl sse_op_table3aq[] = {
    gen_helper_cvtsq2ss,
    gen_helper_cvtsq2sd
};
#endif

static const SSEFunc_i_ep sse_op_table3bi[] = {
    gen_helper_cvttss2si,
    gen_helper_cvtss2si,
    gen_helper_cvttsd2si,
    gen_helper_cvtsd2si
};

#ifdef TARGET_X86_64
static const SSEFunc_l_ep sse_op_table3bq[] = {
    gen_helper_cvttss2sq,
    gen_helper_cvtss2sq,
    gen_helper_cvttsd2sq,
    gen_helper_cvtsd2sq
};
#endif

static const SSEFunc_0_epp sse_op_table4[8][4] = {
    SSE_FOP(cmpeq),
    SSE_FOP(cmplt),
    SSE_FOP(cmple),
    SSE_FOP(cmpunord),
    SSE_FOP(cmpneq),
    SSE_FOP(cmpnlt),
    SSE_FOP(cmpnle),
    SSE_FOP(cmpord),
};

static const SSEFunc_0_epp sse_op_table5[256] = {
    [0x0c] = gen_helper_pi2fw,
    [0x0d] = gen_helper_pi2fd,
    [0x1c] = gen_helper_pf2iw,
    [0x1d] = gen_helper_pf2id,
    [0x8a] = gen_helper_pfnacc,
    [0x8e] = gen_helper_pfpnacc,
    [0x90] = gen_helper_pfcmpge,
    [0x94] = gen_helper_pfmin,
    [0x96] = gen_helper_pfrcp,
    [0x97] = gen_helper_pfrsqrt,
    [0x9a] = gen_helper_pfsub,
    [0x9e] = gen_helper_pfadd,
    [0xa0] = gen_helper_pfcmpgt,
    [0xa4] = gen_helper_pfmax,
    [0xa6] = gen_helper_movq, /* pfrcpit1; no need to actually increase precision */
    [0xa7] = gen_helper_movq, /* pfrsqit1 */
    [0xaa] = gen_helper_pfsubr,
    [0xae] = gen_helper_pfacc,
    [0xb0] = gen_helper_pfcmpeq,
    [0xb4] = gen_helper_pfmul,
    [0xb6] = gen_helper_movq, /* pfrcpit2 */
    [0xb7] = gen_helper_pmulhrw_mmx,
    [0xbb] = gen_helper_pswapd,
    [0xbf] = gen_helper_pavgb_mmx /* pavgusb */
};

struct SSEOpHelper_epp {
    SSEFunc_0_epp op[2];
    uint32_t ext_mask;
};

struct SSEOpHelper_eppi {
    SSEFunc_0_eppi op[2];
    uint32_t ext_mask;
};

#define SSSE3_OP(x) { MMX_OP2(x), CPUID_EXT_SSSE3 }
#define SSE41_OP(x) { { NULL, gen_helper_ ## x ## _xmm }, CPUID_EXT_SSE41 }
#define SSE42_OP(x) { { NULL, gen_helper_ ## x ## _xmm }, CPUID_EXT_SSE42 }
#define SSE41_SPECIAL { { NULL, SSE_SPECIAL }, CPUID_EXT_SSE41 }
#define PCLMULQDQ_OP(x) { { NULL, gen_helper_ ## x ## _xmm }, \
        CPUID_EXT_PCLMULQDQ }
#define AESNI_OP(x) { { NULL, gen_helper_ ## x ## _xmm }, CPUID_EXT_AES }

static const struct SSEOpHelper_epp sse_op_table6[256] = {
    [0x00] = SSSE3_OP(pshufb),
    [0x01] = SSSE3_OP(phaddw),
    [0x02] = SSSE3_OP(phaddd),
    [0x03] = SSSE3_OP(phaddsw),
    [0x04] = SSSE3_OP(pmaddubsw),
    [0x05] = SSSE3_OP(phsubw),
    [0x06] = SSSE3_OP(phsubd),
    [0x07] = SSSE3_OP(phsubsw),
    [0x08] = SSSE3_OP(psignb),
    [0x09] = SSSE3_OP(psignw),
    [0x0a] = SSSE3_OP(psignd),
    [0x0b] = SSSE3_OP(pmulhrsw),
    [0x10] = SSE41_OP(pblendvb),
    [0x14] = SSE41_OP(blendvps),
    [0x15] = SSE41_OP(blendvpd),
    [0x17] = SSE41_OP(ptest),
    [0x1c] = SSSE3_OP(pabsb),
    [0x1d] = SSSE3_OP(pabsw),
    [0x1e] = SSSE3_OP(pabsd),
    [0x20] = SSE41_OP(pmovsxbw),
    [0x21] = SSE41_OP(pmovsxbd),
    [0x22] = SSE41_OP(pmovsxbq),
    [0x23] = SSE41_OP(pmovsxwd),
    [0x24] = SSE41_OP(pmovsxwq),
    [0x25] = SSE41_OP(pmovsxdq),
    [0x28] = SSE41_OP(pmuldq),
    [0x29] = SSE41_OP(pcmpeqq),
    [0x2a] = SSE41_SPECIAL, /* movntqda */
    [0x2b] = SSE41_OP(packusdw),
    [0x30] = SSE41_OP(pmovzxbw),
    [0x31] = SSE41_OP(pmovzxbd),
    [0x32] = SSE41_OP(pmovzxbq),
    [0x33] = SSE41_OP(pmovzxwd),
    [0x34] = SSE41_OP(pmovzxwq),
    [0x35] = SSE41_OP(pmovzxdq),
    [0x37] = SSE42_OP(pcmpgtq),
    [0x38] = SSE41_OP(pminsb),
    [0x39] = SSE41_OP(pminsd),
    [0x3a] = SSE41_OP(pminuw),
    [0x3b] = SSE41_OP(pminud),
    [0x3c] = SSE41_OP(pmaxsb),
    [0x3d] = SSE41_OP(pmaxsd),
    [0x3e] = SSE41_OP(pmaxuw),
    [0x3f] = SSE41_OP(pmaxud),
    [0x40] = SSE41_OP(pmulld),
    [0x41] = SSE41_OP(phminposuw),
    [0xdb] = AESNI_OP(aesimc),
    [0xdc] = AESNI_OP(aesenc),
    [0xdd] = AESNI_OP(aesenclast),
    [0xde] = AESNI_OP(aesdec),
    [0xdf] = AESNI_OP(aesdeclast),
};

static const struct SSEOpHelper_eppi sse_op_table7[256] = {
    [0x08] = SSE41_OP(roundps),
    [0x09] = SSE41_OP(roundpd),
    [0x0a] = SSE41_OP(roundss),
    [0x0b] = SSE41_OP(roundsd),
    [0x0c] = SSE41_OP(blendps),
    [0x0d] = SSE41_OP(blendpd),
    [0x0e] = SSE41_OP(pblendw),
    [0x0f] = SSSE3_OP(palignr),
    [0x14] = SSE41_SPECIAL, /* pextrb */
    [0x15] = SSE41_SPECIAL, /* pextrw */
    [0x16] = SSE41_SPECIAL, /* pextrd/pextrq */
    [0x17] = SSE41_SPECIAL, /* extractps */
    [0x20] = SSE41_SPECIAL, /* pinsrb */
    [0x21] = SSE41_SPECIAL, /* insertps */
    [0x22] = SSE41_SPECIAL, /* pinsrd/pinsrq */
    [0x40] = SSE41_OP(dpps),
    [0x41] = SSE41_OP(dppd),
    [0x42] = SSE41_OP(mpsadbw),
    [0x44] = PCLMULQDQ_OP(pclmulqdq),
    [0x60] = SSE42_OP(pcmpestrm),
    [0x61] = SSE42_OP(pcmpestri),
    [0x62] = SSE42_OP(pcmpistrm),
    [0x63] = SSE42_OP(pcmpistri),
    [0xdf] = AESNI_OP(aeskeygenassist),
};

static void gen_sse(CPUX86State *env, DisasContext *s, int b,
                    target_ulong pc_start, int rex_r)
{
    int b1, op1_offset, op2_offset, is_xmm, val, ot;
    int modrm, mod, rm, reg, reg_addr, offset_addr;
    SSEFunc_0_epp sse_fn_epp;
    SSEFunc_0_eppi sse_fn_eppi;
    SSEFunc_0_ppi sse_fn_ppi;
    SSEFunc_0_eppt sse_fn_eppt;

    b &= 0xff;
    if (s->prefix & PREFIX_DATA)
        b1 = 1;
    else if (s->prefix & PREFIX_REPZ)
        b1 = 2;
    else if (s->prefix & PREFIX_REPNZ)
        b1 = 3;
    else
        b1 = 0;
    sse_fn_epp = sse_op_table1[b][b1];
    if (!sse_fn_epp) {
        goto illegal_op;
    }
    if ((b <= 0x5f && b >= 0x10) || b == 0xc6 || b == 0xc2) {
        is_xmm = 1;
    } else {
        if (b1 == 0) {
            /* MMX case */
            is_xmm = 0;
        } else {
            is_xmm = 1;
        }
    }
    /* simple MMX/SSE operation */
    if (s->flags & HF_TS_MASK) {
        gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
        return;
    }
    if (s->flags & HF_EM_MASK) {
    illegal_op:
        gen_exception(s, EXCP06_ILLOP, pc_start - s->cs_base);
        return;
    }
    if (is_xmm && !(s->flags & HF_OSFXSR_MASK))
        if ((b != 0x38 && b != 0x3a) || (s->prefix & PREFIX_DATA))
            goto illegal_op;
    if (b == 0x0e) {
        if (!(s->cpuid_ext2_features & CPUID_EXT2_3DNOW))
            goto illegal_op;
        /* femms */
        gen_helper_emms(cpu_env);
        return;
    }
    if (b == 0x77) {
        /* emms */
        gen_helper_emms(cpu_env);
        return;
    }
    /* prepare MMX state (XXX: optimize by storing fptt and fptags in
       the static cpu state) */
    if (!is_xmm) {
        gen_helper_enter_mmx(cpu_env);
    }

    modrm = cpu_ldub_code(env, s->pc++);
    reg = ((modrm >> 3) & 7);
    if (is_xmm)
        reg |= rex_r;
    mod = (modrm >> 6) & 3;
    if (sse_fn_epp == SSE_SPECIAL) {
        b |= (b1 << 8);
        switch(b) {
        case 0x0e7: /* movntq */
            if (mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_stq_env_A0(s, offsetof(CPUX86State, fpregs[reg].mmx));
            break;
        case 0x1e7: /* movntdq */
        case 0x02b: /* movntps */
        case 0x12b: /* movntps */
            if (mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_sto_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            break;
        case 0x3f0: /* lddqu */
            if (mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_ldo_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            break;
        case 0x22b: /* movntss */
        case 0x32b: /* movntsd */
            if (mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            if (b1 & 1) {
                gen_stq_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            } else {
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,
                    xmm_regs[reg].XMM_L(0)));
                gen_op_st_T0_A0(s, MO_32);
            }
            break;
        case 0x6e: /* movd mm, ea */
#ifdef TARGET_X86_64
            if (s->dflag == 2) {
                gen_ldst_modrm(env, s, modrm, MO_64, OR_TMP0, 0);
                tcg_gen_st_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,fpregs[reg].mmx));
            } else
#endif
            {
                gen_ldst_modrm(env, s, modrm, MO_32, OR_TMP0, 0);
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env, 
                                 offsetof(CPUX86State,fpregs[reg].mmx));
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_movl_mm_T0_mmx(cpu_ptr0, cpu_tmp2_i32);
            }
            break;
        case 0x16e: /* movd xmm, ea */
#ifdef TARGET_X86_64
            if (s->dflag == 2) {
                gen_ldst_modrm(env, s, modrm, MO_64, OR_TMP0, 0);
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env, 
                                 offsetof(CPUX86State,xmm_regs[reg]));
                gen_helper_movq_mm_T0_xmm(cpu_ptr0, cpu_T[0]);
            } else
#endif
            {
                gen_ldst_modrm(env, s, modrm, MO_32, OR_TMP0, 0);
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env, 
                                 offsetof(CPUX86State,xmm_regs[reg]));
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_movl_mm_T0_xmm(cpu_ptr0, cpu_tmp2_i32);
            }
            break;
        case 0x6f: /* movq mm, ea */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State, fpregs[reg].mmx));
            } else {
                rm = (modrm & 7);
                tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env,
                               offsetof(CPUX86State,fpregs[rm].mmx));
                tcg_gen_st_i64(cpu_tmp1_i64, cpu_env,
                               offsetof(CPUX86State,fpregs[reg].mmx));
            }
            break;
        case 0x010: /* movups */
        case 0x110: /* movupd */
        case 0x028: /* movaps */
        case 0x128: /* movapd */
        case 0x16f: /* movdqa xmm, ea */
        case 0x26f: /* movdqu xmm, ea */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldo_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movo(offsetof(CPUX86State,xmm_regs[reg]),
                            offsetof(CPUX86State,xmm_regs[rm]));
            }
            break;
        case 0x210: /* movss xmm, ea */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)));
                gen_op_movl_T0_0();
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(1)));
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(2)));
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(3)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_L(0)));
            }
            break;
        case 0x310: /* movsd xmm, ea */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
                gen_op_movl_T0_0();
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(2)));
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(3)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)));
            }
            break;
        case 0x012: /* movlps */
        case 0x112: /* movlpd */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                /* movhlps */
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_Q(1)));
            }
            break;
        case 0x212: /* movsldup */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldo_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_L(0)));
                gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(2)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_L(2)));
            }
            gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(1)),
                        offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)));
            gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(3)),
                        offsetof(CPUX86State,xmm_regs[reg].XMM_L(2)));
            break;
        case 0x312: /* movddup */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)));
            }
            gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(1)),
                        offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)));
            break;
        case 0x016: /* movhps */
        case 0x116: /* movhpd */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(1)));
            } else {
                /* movlhps */
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(1)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)));
            }
            break;
        case 0x216: /* movshdup */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldo_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(1)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_L(1)));
                gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(3)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_L(3)));
            }
            gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)),
                        offsetof(CPUX86State,xmm_regs[reg].XMM_L(1)));
            gen_op_movl(offsetof(CPUX86State,xmm_regs[reg].XMM_L(2)),
                        offsetof(CPUX86State,xmm_regs[reg].XMM_L(3)));
            break;
        case 0x178:
        case 0x378:
            {
                int bit_index, field_length;

                if (b1 == 1 && reg != 0)
                    goto illegal_op;
                field_length = cpu_ldub_code(env, s->pc++) & 0x3F;
                bit_index = cpu_ldub_code(env, s->pc++) & 0x3F;
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env,
                    offsetof(CPUX86State,xmm_regs[reg]));
                if (b1 == 1)
                    gen_helper_extrq_i(cpu_env, cpu_ptr0,
                                       tcg_const_i32(bit_index),
                                       tcg_const_i32(field_length));
                else
                    gen_helper_insertq_i(cpu_env, cpu_ptr0,
                                         tcg_const_i32(bit_index),
                                         tcg_const_i32(field_length));
            }
            break;
        case 0x7e: /* movd ea, mm */
#ifdef TARGET_X86_64
            if (s->dflag == 2) {
                tcg_gen_ld_i64(cpu_T[0], cpu_env, 
                               offsetof(CPUX86State,fpregs[reg].mmx));
                gen_ldst_modrm(env, s, modrm, MO_64, OR_TMP0, 1);
            } else
#endif
            {
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, 
                                 offsetof(CPUX86State,fpregs[reg].mmx.MMX_L(0)));
                gen_ldst_modrm(env, s, modrm, MO_32, OR_TMP0, 1);
            }
            break;
        case 0x17e: /* movd ea, xmm */
#ifdef TARGET_X86_64
            if (s->dflag == 2) {
                tcg_gen_ld_i64(cpu_T[0], cpu_env, 
                               offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)));
                gen_ldst_modrm(env, s, modrm, MO_64, OR_TMP0, 1);
            } else
#endif
            {
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, 
                                 offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)));
                gen_ldst_modrm(env, s, modrm, MO_32, OR_TMP0, 1);
            }
            break;
        case 0x27e: /* movq xmm, ea */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_ldq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)));
            }
            gen_op_movq_env_0(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(1)));
            break;
        case 0x7f: /* movq ea, mm */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_stq_env_A0(s, offsetof(CPUX86State, fpregs[reg].mmx));
            } else {
                rm = (modrm & 7);
                gen_op_movq(offsetof(CPUX86State,fpregs[rm].mmx),
                            offsetof(CPUX86State,fpregs[reg].mmx));
            }
            break;
        case 0x011: /* movups */
        case 0x111: /* movupd */
        case 0x029: /* movaps */
        case 0x129: /* movapd */
        case 0x17f: /* movdqa ea, xmm */
        case 0x27f: /* movdqu ea, xmm */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_sto_env_A0(s, offsetof(CPUX86State, xmm_regs[reg]));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movo(offsetof(CPUX86State,xmm_regs[rm]),
                            offsetof(CPUX86State,xmm_regs[reg]));
            }
            break;
        case 0x211: /* movss ea, xmm */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)));
                gen_op_st_T0_A0(s, MO_32);
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movl(offsetof(CPUX86State,xmm_regs[rm].XMM_L(0)),
                            offsetof(CPUX86State,xmm_regs[reg].XMM_L(0)));
            }
            break;
        case 0x311: /* movsd ea, xmm */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_stq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)));
            }
            break;
        case 0x013: /* movlps */
        case 0x113: /* movlpd */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_stq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                goto illegal_op;
            }
            break;
        case 0x017: /* movhps */
        case 0x117: /* movhpd */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_stq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(1)));
            } else {
                goto illegal_op;
            }
            break;
        case 0x71: /* shift mm, im */
        case 0x72:
        case 0x73:
        case 0x171: /* shift xmm, im */
        case 0x172:
        case 0x173:
            if (b1 >= 2) {
	        goto illegal_op;
            }
            val = cpu_ldub_code(env, s->pc++);
            if (is_xmm) {
                gen_op_movl_T0_im(val);
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_t0.XMM_L(0)));
                gen_op_movl_T0_0();
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_t0.XMM_L(1)));
                op1_offset = offsetof(CPUX86State,xmm_t0);
            } else {
                gen_op_movl_T0_im(val);
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,mmx_t0.MMX_L(0)));
                gen_op_movl_T0_0();
                tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,mmx_t0.MMX_L(1)));
                op1_offset = offsetof(CPUX86State,mmx_t0);
            }
            sse_fn_epp = sse_op_table2[((b - 1) & 3) * 8 +
                                       (((modrm >> 3)) & 7)][b1];
            if (!sse_fn_epp) {
                goto illegal_op;
            }
            if (is_xmm) {
                rm = (modrm & 7) | REX_B(s);
                op2_offset = offsetof(CPUX86State,xmm_regs[rm]);
            } else {
                rm = (modrm & 7);
                op2_offset = offsetof(CPUX86State,fpregs[rm].mmx);
            }
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op2_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op1_offset);
            sse_fn_epp(cpu_env, cpu_ptr0, cpu_ptr1);
            break;
        case 0x050: /* movmskps */
            rm = (modrm & 7) | REX_B(s);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, 
                             offsetof(CPUX86State,xmm_regs[rm]));
            gen_helper_movmskps(cpu_tmp2_i32, cpu_env, cpu_ptr0);
            tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
            gen_op_mov_reg_T0(MO_32, reg);
            break;
        case 0x150: /* movmskpd */
            rm = (modrm & 7) | REX_B(s);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, 
                             offsetof(CPUX86State,xmm_regs[rm]));
            gen_helper_movmskpd(cpu_tmp2_i32, cpu_env, cpu_ptr0);
            tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
            gen_op_mov_reg_T0(MO_32, reg);
            break;
        case 0x02a: /* cvtpi2ps */
        case 0x12a: /* cvtpi2pd */
            gen_helper_enter_mmx(cpu_env);
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                op2_offset = offsetof(CPUX86State,mmx_t0);
                gen_ldq_env_A0(s, op2_offset);
            } else {
                rm = (modrm & 7);
                op2_offset = offsetof(CPUX86State,fpregs[rm].mmx);
            }
            op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            switch(b >> 8) {
            case 0x0:
                gen_helper_cvtpi2ps(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            default:
            case 0x1:
                gen_helper_cvtpi2pd(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            }
            break;
        case 0x22a: /* cvtsi2ss */
        case 0x32a: /* cvtsi2sd */
            ot = (s->dflag == 2) ? MO_64 : MO_32;
            gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
            op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            if (ot == MO_32) {
                SSEFunc_0_epi sse_fn_epi = sse_op_table3ai[(b >> 8) & 1];
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                sse_fn_epi(cpu_env, cpu_ptr0, cpu_tmp2_i32);
            } else {
#ifdef TARGET_X86_64
                SSEFunc_0_epl sse_fn_epl = sse_op_table3aq[(b >> 8) & 1];
                sse_fn_epl(cpu_env, cpu_ptr0, cpu_T[0]);
#else
                goto illegal_op;
#endif
            }
            break;
        case 0x02c: /* cvttps2pi */
        case 0x12c: /* cvttpd2pi */
        case 0x02d: /* cvtps2pi */
        case 0x12d: /* cvtpd2pi */
            gen_helper_enter_mmx(cpu_env);
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                op2_offset = offsetof(CPUX86State,xmm_t0);
                gen_ldo_env_A0(s, op2_offset);
            } else {
                rm = (modrm & 7) | REX_B(s);
                op2_offset = offsetof(CPUX86State,xmm_regs[rm]);
            }
            op1_offset = offsetof(CPUX86State,fpregs[reg & 7].mmx);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            switch(b) {
            case 0x02c:
                gen_helper_cvttps2pi(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            case 0x12c:
                gen_helper_cvttpd2pi(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            case 0x02d:
                gen_helper_cvtps2pi(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            case 0x12d:
                gen_helper_cvtpd2pi(cpu_env, cpu_ptr0, cpu_ptr1);
                break;
            }
            break;
        case 0x22c: /* cvttss2si */
        case 0x32c: /* cvttsd2si */
        case 0x22d: /* cvtss2si */
        case 0x32d: /* cvtsd2si */
            ot = (s->dflag == 2) ? MO_64 : MO_32;
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                if ((b >> 8) & 1) {
                    gen_ldq_env_A0(s, offsetof(CPUX86State, xmm_t0.XMM_Q(0)));
                } else {
                    gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                    tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_t0.XMM_L(0)));
                }
                op2_offset = offsetof(CPUX86State,xmm_t0);
            } else {
                rm = (modrm & 7) | REX_B(s);
                op2_offset = offsetof(CPUX86State,xmm_regs[rm]);
            }
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op2_offset);
            if (ot == MO_32) {
                SSEFunc_i_ep sse_fn_i_ep =
                    sse_op_table3bi[((b >> 7) & 2) | (b & 1)];
                sse_fn_i_ep(cpu_tmp2_i32, cpu_env, cpu_ptr0);
                tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
            } else {
#ifdef TARGET_X86_64
                SSEFunc_l_ep sse_fn_l_ep =
                    sse_op_table3bq[((b >> 7) & 2) | (b & 1)];
                sse_fn_l_ep(cpu_T[0], cpu_env, cpu_ptr0);
#else
                goto illegal_op;
#endif
            }
            gen_op_mov_reg_T0(ot, reg);
            break;
        case 0xc4: /* pinsrw */
        case 0x1c4:
            s->rip_offset = 1;
            gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
            val = cpu_ldub_code(env, s->pc++);
            if (b1) {
                val &= 7;
                tcg_gen_st16_tl(cpu_T[0], cpu_env,
                                offsetof(CPUX86State,xmm_regs[reg].XMM_W(val)));
            } else {
                val &= 3;
                tcg_gen_st16_tl(cpu_T[0], cpu_env,
                                offsetof(CPUX86State,fpregs[reg].mmx.MMX_W(val)));
            }
            break;
        case 0xc5: /* pextrw */
        case 0x1c5:
            if (mod != 3)
                goto illegal_op;
            ot = (s->dflag == 2) ? MO_64 : MO_32;
            val = cpu_ldub_code(env, s->pc++);
            if (b1) {
                val &= 7;
                rm = (modrm & 7) | REX_B(s);
                tcg_gen_ld16u_tl(cpu_T[0], cpu_env,
                                 offsetof(CPUX86State,xmm_regs[rm].XMM_W(val)));
            } else {
                val &= 3;
                rm = (modrm & 7);
                tcg_gen_ld16u_tl(cpu_T[0], cpu_env,
                                offsetof(CPUX86State,fpregs[rm].mmx.MMX_W(val)));
            }
            reg = ((modrm >> 3) & 7) | rex_r;
            gen_op_mov_reg_T0(ot, reg);
            break;
        case 0x1d6: /* movq ea, xmm */
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_stq_env_A0(s, offsetof(CPUX86State,
                                           xmm_regs[reg].XMM_Q(0)));
            } else {
                rm = (modrm & 7) | REX_B(s);
                gen_op_movq(offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)),
                            offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)));
                gen_op_movq_env_0(offsetof(CPUX86State,xmm_regs[rm].XMM_Q(1)));
            }
            break;
        case 0x2d6: /* movq2dq */
            gen_helper_enter_mmx(cpu_env);
            rm = (modrm & 7);
            gen_op_movq(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(0)),
                        offsetof(CPUX86State,fpregs[rm].mmx));
            gen_op_movq_env_0(offsetof(CPUX86State,xmm_regs[reg].XMM_Q(1)));
            break;
        case 0x3d6: /* movdq2q */
            gen_helper_enter_mmx(cpu_env);
            rm = (modrm & 7) | REX_B(s);
            gen_op_movq(offsetof(CPUX86State,fpregs[reg & 7].mmx),
                        offsetof(CPUX86State,xmm_regs[rm].XMM_Q(0)));
            break;
        case 0xd7: /* pmovmskb */
        case 0x1d7:
            if (mod != 3)
                goto illegal_op;
            if (b1) {
                rm = (modrm & 7) | REX_B(s);
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env, offsetof(CPUX86State,xmm_regs[rm]));
                gen_helper_pmovmskb_xmm(cpu_tmp2_i32, cpu_env, cpu_ptr0);
            } else {
                rm = (modrm & 7);
                tcg_gen_addi_ptr(cpu_ptr0, cpu_env, offsetof(CPUX86State,fpregs[rm].mmx));
                gen_helper_pmovmskb_mmx(cpu_tmp2_i32, cpu_env, cpu_ptr0);
            }
            tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
            reg = ((modrm >> 3) & 7) | rex_r;
            gen_op_mov_reg_T0(MO_32, reg);
            break;

        case 0x138:
        case 0x038:
            b = modrm;
            if ((b & 0xf0) == 0xf0) {
                goto do_0f_38_fx;
            }
            modrm = cpu_ldub_code(env, s->pc++);
            rm = modrm & 7;
            reg = ((modrm >> 3) & 7) | rex_r;
            mod = (modrm >> 6) & 3;
            if (b1 >= 2) {
                goto illegal_op;
            }

            sse_fn_epp = sse_op_table6[b].op[b1];
            if (!sse_fn_epp) {
                goto illegal_op;
            }
            if (!(s->cpuid_ext_features & sse_op_table6[b].ext_mask))
                goto illegal_op;

            if (b1) {
                op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
                if (mod == 3) {
                    op2_offset = offsetof(CPUX86State,xmm_regs[rm | REX_B(s)]);
                } else {
                    op2_offset = offsetof(CPUX86State,xmm_t0);
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    switch (b) {
                    case 0x20: case 0x30: /* pmovsxbw, pmovzxbw */
                    case 0x23: case 0x33: /* pmovsxwd, pmovzxwd */
                    case 0x25: case 0x35: /* pmovsxdq, pmovzxdq */
                        gen_ldq_env_A0(s, op2_offset +
                                        offsetof(XMMReg, XMM_Q(0)));
                        break;
                    case 0x21: case 0x31: /* pmovsxbd, pmovzxbd */
                    case 0x24: case 0x34: /* pmovsxwq, pmovzxwq */
                        tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
                                            s->mem_index, MO_LEUL);
                        tcg_gen_st_i32(cpu_tmp2_i32, cpu_env, op2_offset +
                                        offsetof(XMMReg, XMM_L(0)));
                        break;
                    case 0x22: case 0x32: /* pmovsxbq, pmovzxbq */
                        tcg_gen_qemu_ld_tl(cpu_tmp0, cpu_A0,
                                           s->mem_index, MO_LEUW);
                        tcg_gen_st16_tl(cpu_tmp0, cpu_env, op2_offset +
                                        offsetof(XMMReg, XMM_W(0)));
                        break;
                    case 0x2a:            /* movntqda */
                        gen_ldo_env_A0(s, op1_offset);
                        return;
                    default:
                        gen_ldo_env_A0(s, op2_offset);
                    }
                }
            } else {
                op1_offset = offsetof(CPUX86State,fpregs[reg].mmx);
                if (mod == 3) {
                    op2_offset = offsetof(CPUX86State,fpregs[rm].mmx);
                } else {
                    op2_offset = offsetof(CPUX86State,mmx_t0);
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    gen_ldq_env_A0(s, op2_offset);
                }
            }
            if (sse_fn_epp == SSE_SPECIAL) {
                goto illegal_op;
            }

            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            sse_fn_epp(cpu_env, cpu_ptr0, cpu_ptr1);

            if (b == 0x17) {
                set_cc_op(s, CC_OP_EFLAGS);
            }
            break;

        case 0x238:
        case 0x338:
        do_0f_38_fx:
            /* Various integer extensions at 0f 38 f[0-f].  */
            b = modrm | (b1 << 8);
            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;

            switch (b) {
            case 0x3f0: /* crc32 Gd,Eb */
            case 0x3f1: /* crc32 Gd,Ey */
            do_crc32:
                if (!(s->cpuid_ext_features & CPUID_EXT_SSE42)) {
                    goto illegal_op;
                }
                if ((b & 0xff) == 0xf0) {
                    ot = MO_8;
                } else if (s->dflag != 2) {
                    ot = (s->prefix & PREFIX_DATA ? MO_16 : MO_32);
                } else {
                    ot = MO_64;
                }

                gen_op_mov_TN_reg(MO_32, 0, reg);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                gen_helper_crc32(cpu_T[0], cpu_tmp2_i32,
                                 cpu_T[0], tcg_const_i32(8 << ot));

                ot = (s->dflag == 2) ? MO_64 : MO_32;
                gen_op_mov_reg_T0(ot, reg);
                break;

            case 0x1f0: /* crc32 or movbe */
            case 0x1f1:
                /* For these insns, the f3 prefix is supposed to have priority
                   over the 66 prefix, but that's not what we implement above
                   setting b1.  */
                if (s->prefix & PREFIX_REPNZ) {
                    goto do_crc32;
                }
                /* FALLTHRU */
            case 0x0f0: /* movbe Gy,My */
            case 0x0f1: /* movbe My,Gy */
                if (!(s->cpuid_ext_features & CPUID_EXT_MOVBE)) {
                    goto illegal_op;
                }
                if (s->dflag != 2) {
                    ot = (s->prefix & PREFIX_DATA ? MO_16 : MO_32);
                } else {
                    ot = MO_64;
                }

                /* Load the data incoming to the bswap.  Note that the TCG
                   implementation of bswap requires the input be zero
                   extended.  In the case of the loads, we simply know that
                   gen_op_ld_v via gen_ldst_modrm does that already.  */
                if ((b & 1) == 0) {
                    gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                } else {
                    switch (ot) {
                    case MO_16:
                        tcg_gen_ext16u_tl(cpu_T[0], cpu_regs[reg]);
                        break;
                    default:
                        tcg_gen_ext32u_tl(cpu_T[0], cpu_regs[reg]);
                        break;
                    case MO_64:
                        tcg_gen_mov_tl(cpu_T[0], cpu_regs[reg]);
                        break;
                    }
                }

                switch (ot) {
                case MO_16:
                    tcg_gen_bswap16_tl(cpu_T[0], cpu_T[0]);
                    break;
                default:
                    tcg_gen_bswap32_tl(cpu_T[0], cpu_T[0]);
                    break;
#ifdef TARGET_X86_64
                case MO_64:
                    tcg_gen_bswap64_tl(cpu_T[0], cpu_T[0]);
                    break;
#endif
                }

                if ((b & 1) == 0) {
                    gen_op_mov_reg_T0(ot, reg);
                } else {
                    gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
                }
                break;

            case 0x0f2: /* andn Gy, By, Ey */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                tcg_gen_andc_tl(cpu_T[0], cpu_regs[s->vex_v], cpu_T[0]);
                gen_op_mov_reg_T0(ot, reg);
                gen_op_update1_cc();
                set_cc_op(s, CC_OP_LOGICB + ot);
                break;

            case 0x0f7: /* bextr Gy, Ey, By */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                {
                    TCGv bound, zero;

                    gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                    /* Extract START, and shift the operand.
                       Shifts larger than operand size get zeros.  */
                    tcg_gen_ext8u_tl(cpu_A0, cpu_regs[s->vex_v]);
                    tcg_gen_shr_tl(cpu_T[0], cpu_T[0], cpu_A0);

                    bound = tcg_const_tl(ot == MO_64 ? 63 : 31);
                    zero = tcg_const_tl(0);
                    tcg_gen_movcond_tl(TCG_COND_LEU, cpu_T[0], cpu_A0, bound,
                                       cpu_T[0], zero);
                    tcg_temp_free(zero);

                    /* Extract the LEN into a mask.  Lengths larger than
                       operand size get all ones.  */
                    tcg_gen_shri_tl(cpu_A0, cpu_regs[s->vex_v], 8);
                    tcg_gen_ext8u_tl(cpu_A0, cpu_A0);
                    tcg_gen_movcond_tl(TCG_COND_LEU, cpu_A0, cpu_A0, bound,
                                       cpu_A0, bound);
                    tcg_temp_free(bound);
                    tcg_gen_movi_tl(cpu_T[1], 1);
                    tcg_gen_shl_tl(cpu_T[1], cpu_T[1], cpu_A0);
                    tcg_gen_subi_tl(cpu_T[1], cpu_T[1], 1);
                    tcg_gen_and_tl(cpu_T[0], cpu_T[0], cpu_T[1]);

                    gen_op_mov_reg_T0(ot, reg);
                    gen_op_update1_cc();
                    set_cc_op(s, CC_OP_LOGICB + ot);
                }
                break;

            case 0x0f5: /* bzhi Gy, Ey, By */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                tcg_gen_ext8u_tl(cpu_T[1], cpu_regs[s->vex_v]);
                {
                    TCGv bound = tcg_const_tl(ot == MO_64 ? 63 : 31);
                    /* Note that since we're using BMILG (in order to get O
                       cleared) we need to store the inverse into C.  */
                    tcg_gen_setcond_tl(TCG_COND_LT, cpu_cc_src,
                                       cpu_T[1], bound);
                    tcg_gen_movcond_tl(TCG_COND_GT, cpu_T[1], cpu_T[1],
                                       bound, bound, cpu_T[1]);
                    tcg_temp_free(bound);
                }
                tcg_gen_movi_tl(cpu_A0, -1);
                tcg_gen_shl_tl(cpu_A0, cpu_A0, cpu_T[1]);
                tcg_gen_andc_tl(cpu_T[0], cpu_T[0], cpu_A0);
                gen_op_mov_reg_T0(ot, reg);
                gen_op_update1_cc();
                set_cc_op(s, CC_OP_BMILGB + ot);
                break;

            case 0x3f6: /* mulx By, Gy, rdx, Ey */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                switch (ot) {
                default:
                    tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                    tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_regs[R_EDX]);
                    tcg_gen_mulu2_i32(cpu_tmp2_i32, cpu_tmp3_i32,
                                      cpu_tmp2_i32, cpu_tmp3_i32);
                    tcg_gen_extu_i32_tl(cpu_regs[s->vex_v], cpu_tmp2_i32);
                    tcg_gen_extu_i32_tl(cpu_regs[reg], cpu_tmp3_i32);
                    break;
#ifdef TARGET_X86_64
                case MO_64:
                    tcg_gen_mulu2_i64(cpu_regs[s->vex_v], cpu_regs[reg],
                                      cpu_T[0], cpu_regs[R_EDX]);
                    break;
#endif
                }
                break;

            case 0x3f5: /* pdep Gy, By, Ey */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                /* Note that by zero-extending the mask operand, we
                   automatically handle zero-extending the result.  */
                if (s->dflag == 2) {
                    tcg_gen_mov_tl(cpu_T[1], cpu_regs[s->vex_v]);
                } else {
                    tcg_gen_ext32u_tl(cpu_T[1], cpu_regs[s->vex_v]);
                }
                gen_helper_pdep(cpu_regs[reg], cpu_T[0], cpu_T[1]);
                break;

            case 0x2f5: /* pext Gy, By, Ey */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                /* Note that by zero-extending the mask operand, we
                   automatically handle zero-extending the result.  */
                if (s->dflag == 2) {
                    tcg_gen_mov_tl(cpu_T[1], cpu_regs[s->vex_v]);
                } else {
                    tcg_gen_ext32u_tl(cpu_T[1], cpu_regs[s->vex_v]);
                }
                gen_helper_pext(cpu_regs[reg], cpu_T[0], cpu_T[1]);
                break;

            case 0x1f6: /* adcx Gy, Ey */
            case 0x2f6: /* adox Gy, Ey */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_ADX)) {
                    goto illegal_op;
                } else {
                    TCGv carry_in, carry_out, zero;
                    int end_op;

                    ot = (s->dflag == 2 ? MO_64 : MO_32);
                    gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);

                    /* Re-use the carry-out from a previous round.  */
                    TCGV_UNUSED(carry_in);
                    carry_out = (b == 0x1f6 ? cpu_cc_dst : cpu_cc_src2);
                    switch (s->cc_op) {
                    case CC_OP_ADCX:
                        if (b == 0x1f6) {
                            carry_in = cpu_cc_dst;
                            end_op = CC_OP_ADCX;
                        } else {
                            end_op = CC_OP_ADCOX;
                        }
                        break;
                    case CC_OP_ADOX:
                        if (b == 0x1f6) {
                            end_op = CC_OP_ADCOX;
                        } else {
                            carry_in = cpu_cc_src2;
                            end_op = CC_OP_ADOX;
                        }
                        break;
                    case CC_OP_ADCOX:
                        end_op = CC_OP_ADCOX;
                        carry_in = carry_out;
                        break;
                    default:
                        end_op = (b == 0x1f6 ? CC_OP_ADCX : CC_OP_ADOX);
                        break;
                    }
                    /* If we can't reuse carry-out, get it out of EFLAGS.  */
                    if (TCGV_IS_UNUSED(carry_in)) {
                        if (s->cc_op != CC_OP_ADCX && s->cc_op != CC_OP_ADOX) {
                            gen_compute_eflags(s);
                        }
                        carry_in = cpu_tmp0;
                        tcg_gen_shri_tl(carry_in, cpu_cc_src,
                                        ctz32(b == 0x1f6 ? CC_C : CC_O));
                        tcg_gen_andi_tl(carry_in, carry_in, 1);
                    }

                    switch (ot) {
#ifdef TARGET_X86_64
                    case MO_32:
                        /* If we know TL is 64-bit, and we want a 32-bit
                           result, just do everything in 64-bit arithmetic.  */
                        tcg_gen_ext32u_i64(cpu_regs[reg], cpu_regs[reg]);
                        tcg_gen_ext32u_i64(cpu_T[0], cpu_T[0]);
                        tcg_gen_add_i64(cpu_T[0], cpu_T[0], cpu_regs[reg]);
                        tcg_gen_add_i64(cpu_T[0], cpu_T[0], carry_in);
                        tcg_gen_ext32u_i64(cpu_regs[reg], cpu_T[0]);
                        tcg_gen_shri_i64(carry_out, cpu_T[0], 32);
                        break;
#endif
                    default:
                        /* Otherwise compute the carry-out in two steps.  */
                        zero = tcg_const_tl(0);
                        tcg_gen_add2_tl(cpu_T[0], carry_out,
                                        cpu_T[0], zero,
                                        carry_in, zero);
                        tcg_gen_add2_tl(cpu_regs[reg], carry_out,
                                        cpu_regs[reg], carry_out,
                                        cpu_T[0], zero);
                        tcg_temp_free(zero);
                        break;
                    }
                    set_cc_op(s, end_op);
                }
                break;

            case 0x1f7: /* shlx Gy, Ey, By */
            case 0x2f7: /* sarx Gy, Ey, By */
            case 0x3f7: /* shrx Gy, Ey, By */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = (s->dflag == 2 ? MO_64 : MO_32);
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                if (ot == MO_64) {
                    tcg_gen_andi_tl(cpu_T[1], cpu_regs[s->vex_v], 63);
                } else {
                    tcg_gen_andi_tl(cpu_T[1], cpu_regs[s->vex_v], 31);
                }
                if (b == 0x1f7) {
                    tcg_gen_shl_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                } else if (b == 0x2f7) {
                    if (ot != MO_64) {
                        tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
                    }
                    tcg_gen_sar_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                } else {
                    if (ot != MO_64) {
                        tcg_gen_ext32u_tl(cpu_T[0], cpu_T[0]);
                    }
                    tcg_gen_shr_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                }
                gen_op_mov_reg_T0(ot, reg);
                break;

            case 0x0f3:
            case 0x1f3:
            case 0x2f3:
            case 0x3f3: /* Group 17 */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);

                switch (reg & 7) {
                case 1: /* blsr By,Ey */
                    tcg_gen_neg_tl(cpu_T[1], cpu_T[0]);
                    tcg_gen_and_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                    gen_op_mov_reg_T0(ot, s->vex_v);
                    gen_op_update2_cc();
                    set_cc_op(s, CC_OP_BMILGB + ot);
                    break;

                case 2: /* blsmsk By,Ey */
                    tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
                    tcg_gen_subi_tl(cpu_T[0], cpu_T[0], 1);
                    tcg_gen_xor_tl(cpu_T[0], cpu_T[0], cpu_cc_src);
                    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                    set_cc_op(s, CC_OP_BMILGB + ot);
                    break;

                case 3: /* blsi By, Ey */
                    tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
                    tcg_gen_subi_tl(cpu_T[0], cpu_T[0], 1);
                    tcg_gen_and_tl(cpu_T[0], cpu_T[0], cpu_cc_src);
                    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                    set_cc_op(s, CC_OP_BMILGB + ot);
                    break;

                default:
                    goto illegal_op;
                }
                break;

            default:
                goto illegal_op;
            }
            break;

        case 0x03a:
        case 0x13a:
            b = modrm;
            modrm = cpu_ldub_code(env, s->pc++);
            rm = modrm & 7;
            reg = ((modrm >> 3) & 7) | rex_r;
            mod = (modrm >> 6) & 3;
            if (b1 >= 2) {
                goto illegal_op;
            }

            sse_fn_eppi = sse_op_table7[b].op[b1];
            if (!sse_fn_eppi) {
                goto illegal_op;
            }
            if (!(s->cpuid_ext_features & sse_op_table7[b].ext_mask))
                goto illegal_op;

            if (sse_fn_eppi == SSE_SPECIAL) {
                ot = (s->dflag == 2) ? MO_64 : MO_32;
                rm = (modrm & 7) | REX_B(s);
                if (mod != 3)
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                reg = ((modrm >> 3) & 7) | rex_r;
                val = cpu_ldub_code(env, s->pc++);
                switch (b) {
                case 0x14: /* pextrb */
                    tcg_gen_ld8u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,
                                            xmm_regs[reg].XMM_B(val & 15)));
                    if (mod == 3) {
                        gen_op_mov_reg_T0(ot, rm);
                    } else {
                        tcg_gen_qemu_st_tl(cpu_T[0], cpu_A0,
                                           s->mem_index, MO_UB);
                    }
                    break;
                case 0x15: /* pextrw */
                    tcg_gen_ld16u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,
                                            xmm_regs[reg].XMM_W(val & 7)));
                    if (mod == 3) {
                        gen_op_mov_reg_T0(ot, rm);
                    } else {
                        tcg_gen_qemu_st_tl(cpu_T[0], cpu_A0,
                                           s->mem_index, MO_LEUW);
                    }
                    break;
                case 0x16:
                    if (ot == MO_32) { /* pextrd */
                        tcg_gen_ld_i32(cpu_tmp2_i32, cpu_env,
                                        offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(val & 3)));
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        if (mod == 3) {
                            gen_op_mov_reg_v(ot, rm, cpu_T[0]);
                        } else {
                            tcg_gen_qemu_st_tl(cpu_T[0], cpu_A0,
                                               s->mem_index, MO_LEUL);
                        }
                    } else { /* pextrq */
#ifdef TARGET_X86_64
                        tcg_gen_ld_i64(cpu_tmp1_i64, cpu_env,
                                        offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_Q(val & 1)));
                        if (mod == 3) {
                            gen_op_mov_reg_v(ot, rm, cpu_tmp1_i64);
                        } else {
                            tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0,
                                                s->mem_index, MO_LEQ);
                        }
#else
                        goto illegal_op;
#endif
                    }
                    break;
                case 0x17: /* extractps */
                    tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,
                                            xmm_regs[reg].XMM_L(val & 3)));
                    if (mod == 3) {
                        gen_op_mov_reg_T0(ot, rm);
                    } else {
                        tcg_gen_qemu_st_tl(cpu_T[0], cpu_A0,
                                           s->mem_index, MO_LEUL);
                    }
                    break;
                case 0x20: /* pinsrb */
                    if (mod == 3) {
                        gen_op_mov_TN_reg(MO_32, 0, rm);
                    } else {
                        tcg_gen_qemu_ld_tl(cpu_T[0], cpu_A0,
                                           s->mem_index, MO_UB);
                    }
                    tcg_gen_st8_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,
                                            xmm_regs[reg].XMM_B(val & 15)));
                    break;
                case 0x21: /* insertps */
                    if (mod == 3) {
                        tcg_gen_ld_i32(cpu_tmp2_i32, cpu_env,
                                        offsetof(CPUX86State,xmm_regs[rm]
                                                .XMM_L((val >> 6) & 3)));
                    } else {
                        tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
                                            s->mem_index, MO_LEUL);
                    }
                    tcg_gen_st_i32(cpu_tmp2_i32, cpu_env,
                                    offsetof(CPUX86State,xmm_regs[reg]
                                            .XMM_L((val >> 4) & 3)));
                    if ((val >> 0) & 1)
                        tcg_gen_st_i32(tcg_const_i32(0 /*float32_zero*/),
                                        cpu_env, offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(0)));
                    if ((val >> 1) & 1)
                        tcg_gen_st_i32(tcg_const_i32(0 /*float32_zero*/),
                                        cpu_env, offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(1)));
                    if ((val >> 2) & 1)
                        tcg_gen_st_i32(tcg_const_i32(0 /*float32_zero*/),
                                        cpu_env, offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(2)));
                    if ((val >> 3) & 1)
                        tcg_gen_st_i32(tcg_const_i32(0 /*float32_zero*/),
                                        cpu_env, offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(3)));
                    break;
                case 0x22:
                    if (ot == MO_32) { /* pinsrd */
                        if (mod == 3) {
                            gen_op_mov_v_reg(ot, cpu_tmp0, rm);
                        } else {
                            tcg_gen_qemu_ld_tl(cpu_tmp0, cpu_A0,
                                               s->mem_index, MO_LEUL);
                        }
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_tmp0);
                        tcg_gen_st_i32(cpu_tmp2_i32, cpu_env,
                                        offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_L(val & 3)));
                    } else { /* pinsrq */
#ifdef TARGET_X86_64
                        if (mod == 3) {
                            gen_op_mov_v_reg(ot, cpu_tmp1_i64, rm);
                        } else {
                            tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0,
                                                s->mem_index, MO_LEQ);
                        }
                        tcg_gen_st_i64(cpu_tmp1_i64, cpu_env,
                                        offsetof(CPUX86State,
                                                xmm_regs[reg].XMM_Q(val & 1)));
#else
                        goto illegal_op;
#endif
                    }
                    break;
                }
                return;
            }

            if (b1) {
                op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
                if (mod == 3) {
                    op2_offset = offsetof(CPUX86State,xmm_regs[rm | REX_B(s)]);
                } else {
                    op2_offset = offsetof(CPUX86State,xmm_t0);
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    gen_ldo_env_A0(s, op2_offset);
                }
            } else {
                op1_offset = offsetof(CPUX86State,fpregs[reg].mmx);
                if (mod == 3) {
                    op2_offset = offsetof(CPUX86State,fpregs[rm].mmx);
                } else {
                    op2_offset = offsetof(CPUX86State,mmx_t0);
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    gen_ldq_env_A0(s, op2_offset);
                }
            }
            val = cpu_ldub_code(env, s->pc++);

            if ((b & 0xfc) == 0x60) { /* pcmpXstrX */
                set_cc_op(s, CC_OP_EFLAGS);

                if (s->dflag == 2)
                    /* The helper must use entire 64-bit gp registers */
                    val |= 1 << 8;
            }

            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            sse_fn_eppi(cpu_env, cpu_ptr0, cpu_ptr1, tcg_const_i32(val));
            break;

        case 0x33a:
            /* Various integer extensions at 0f 3a f[0-f].  */
            b = modrm | (b1 << 8);
            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;

            switch (b) {
            case 0x3f0: /* rorx Gy,Ey, Ib */
                if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
                    || !(s->prefix & PREFIX_VEX)
                    || s->vex_l != 0) {
                    goto illegal_op;
                }
                ot = s->dflag == 2 ? MO_64 : MO_32;
                gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
                b = cpu_ldub_code(env, s->pc++);
                if (ot == MO_64) {
                    tcg_gen_rotri_tl(cpu_T[0], cpu_T[0], b & 63);
                } else {
                    tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                    tcg_gen_rotri_i32(cpu_tmp2_i32, cpu_tmp2_i32, b & 31);
                    tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                }
                gen_op_mov_reg_T0(ot, reg);
                break;

            default:
                goto illegal_op;
            }
            break;

        default:
            goto illegal_op;
        }
    } else {
        /* generic MMX or SSE operation */
        switch(b) {
        case 0x70: /* pshufx insn */
        case 0xc6: /* pshufx insn */
        case 0xc2: /* compare insns */
            s->rip_offset = 1;
            break;
        default:
            break;
        }
        if (is_xmm) {
            op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                op2_offset = offsetof(CPUX86State,xmm_t0);
                if (b1 >= 2 && ((b >= 0x50 && b <= 0x5f && b != 0x5b) ||
                                b == 0xc2)) {
                    /* specific case for SSE single instructions */
                    if (b1 == 2) {
                        /* 32 bit access */
                        gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                        tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_t0.XMM_L(0)));
                    } else {
                        /* 64 bit access */
                        gen_ldq_env_A0(s, offsetof(CPUX86State,
                                                   xmm_t0.XMM_D(0)));
                    }
                } else {
                    gen_ldo_env_A0(s, op2_offset);
                }
            } else {
                rm = (modrm & 7) | REX_B(s);
                op2_offset = offsetof(CPUX86State,xmm_regs[rm]);
            }
        } else {
            op1_offset = offsetof(CPUX86State,fpregs[reg].mmx);
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                op2_offset = offsetof(CPUX86State,mmx_t0);
                gen_ldq_env_A0(s, op2_offset);
            } else {
                rm = (modrm & 7);
                op2_offset = offsetof(CPUX86State,fpregs[rm].mmx);
            }
        }
        switch(b) {
        case 0x0f: /* 3DNow! data insns */
            if (!(s->cpuid_ext2_features & CPUID_EXT2_3DNOW))
                goto illegal_op;
            val = cpu_ldub_code(env, s->pc++);
            sse_fn_epp = sse_op_table5[val];
            if (!sse_fn_epp) {
                goto illegal_op;
            }
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            sse_fn_epp(cpu_env, cpu_ptr0, cpu_ptr1);
            break;
        case 0x70: /* pshufx insn */
        case 0xc6: /* pshufx insn */
            val = cpu_ldub_code(env, s->pc++);
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            /* XXX: introduce a new table? */
            sse_fn_ppi = (SSEFunc_0_ppi)sse_fn_epp;
            sse_fn_ppi(cpu_ptr0, cpu_ptr1, tcg_const_i32(val));
            break;
        case 0xc2:
            /* compare insns */
            val = cpu_ldub_code(env, s->pc++);
            if (val >= 8)
                goto illegal_op;
            sse_fn_epp = sse_op_table4[val][b1];

            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            sse_fn_epp(cpu_env, cpu_ptr0, cpu_ptr1);
            break;
        case 0xf7:
            /* maskmov : we must prepare A0 */
            if (mod != 3)
                goto illegal_op;
#ifdef TARGET_X86_64
            if (s->aflag == 2) {
                gen_op_movq_A0_reg(R_EDI);
            } else
#endif
            {
                gen_op_movl_A0_reg(R_EDI);
                if (s->aflag == 0)
                    gen_op_andl_A0_ffff();
            }
            gen_add_A0_ds_seg(s);

            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            /* XXX: introduce a new table? */
            sse_fn_eppt = (SSEFunc_0_eppt)sse_fn_epp;
            sse_fn_eppt(cpu_env, cpu_ptr0, cpu_ptr1, cpu_A0);
            break;
        default:
            tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset);
            tcg_gen_addi_ptr(cpu_ptr1, cpu_env, op2_offset);
            sse_fn_epp(cpu_env, cpu_ptr0, cpu_ptr1);
            break;
        }
        if (b == 0x2e || b == 0x2f) {
            set_cc_op(s, CC_OP_EFLAGS);
        }
    }
}

/* convert one instruction. s->is_jmp is set if the translation must
   be stopped. Return the next pc value */
static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
                               target_ulong pc_start)
{
    int b, prefixes, aflag, dflag;
    int shift, ot;
    int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;
    target_ulong next_eip, tval;
    int rex_w, rex_r;

    if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
        tcg_gen_debug_insn_start(pc_start);
    }
    s->pc = pc_start;
    prefixes = 0;
    s->override = -1;
    rex_w = -1;
    rex_r = 0;
#ifdef TARGET_X86_64
    s->rex_x = 0;
    s->rex_b = 0;
    x86_64_hregs = 0;
#endif
    s->rip_offset = 0; /* for relative ip address */
    s->vex_l = 0;
    s->vex_v = 0;
 next_byte:
    b = cpu_ldub_code(env, s->pc);
    s->pc++;
    /* Collect prefixes.  */
    switch (b) {
    case 0xf3:
        prefixes |= PREFIX_REPZ;
        goto next_byte;
    case 0xf2:
        prefixes |= PREFIX_REPNZ;
        goto next_byte;
    case 0xf0:
        prefixes |= PREFIX_LOCK;
        goto next_byte;
    case 0x2e:
        s->override = R_CS;
        goto next_byte;
    case 0x36:
        s->override = R_SS;
        goto next_byte;
    case 0x3e:
        s->override = R_DS;
        goto next_byte;
    case 0x26:
        s->override = R_ES;
        goto next_byte;
    case 0x64:
        s->override = R_FS;
        goto next_byte;
    case 0x65:
        s->override = R_GS;
        goto next_byte;
    case 0x66:
        prefixes |= PREFIX_DATA;
        goto next_byte;
    case 0x67:
        prefixes |= PREFIX_ADR;
        goto next_byte;
#ifdef TARGET_X86_64
    case 0x40 ... 0x4f:
        if (CODE64(s)) {
            /* REX prefix */
            rex_w = (b >> 3) & 1;
            rex_r = (b & 0x4) << 1;
            s->rex_x = (b & 0x2) << 2;
            REX_B(s) = (b & 0x1) << 3;
            x86_64_hregs = 1; /* select uniform byte register addressing */
            goto next_byte;
        }
        break;
#endif
    case 0xc5: /* 2-byte VEX */
    case 0xc4: /* 3-byte VEX */
        /* VEX prefixes cannot be used except in 32-bit mode.
           Otherwise the instruction is LES or LDS.  */
        if (s->code32 && !s->vm86) {
            static const int pp_prefix[4] = {
                0, PREFIX_DATA, PREFIX_REPZ, PREFIX_REPNZ
            };
            int vex3, vex2 = cpu_ldub_code(env, s->pc);

            if (!CODE64(s) && (vex2 & 0xc0) != 0xc0) {
                /* 4.1.4.6: In 32-bit mode, bits [7:6] must be 11b,
                   otherwise the instruction is LES or LDS.  */
                break;
            }
            s->pc++;

            /* 4.1.1-4.1.3: No preceding lock, 66, f2, f3, or rex prefixes. */
            if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ
                            | PREFIX_LOCK | PREFIX_DATA)) {
                goto illegal_op;
            }
#ifdef TARGET_X86_64
            if (x86_64_hregs) {
                goto illegal_op;
            }
#endif
            rex_r = (~vex2 >> 4) & 8;
            if (b == 0xc5) {
                vex3 = vex2;
                b = cpu_ldub_code(env, s->pc++);
            } else {
#ifdef TARGET_X86_64
                s->rex_x = (~vex2 >> 3) & 8;
                s->rex_b = (~vex2 >> 2) & 8;
#endif
                vex3 = cpu_ldub_code(env, s->pc++);
                rex_w = (vex3 >> 7) & 1;
                switch (vex2 & 0x1f) {
                case 0x01: /* Implied 0f leading opcode bytes.  */
                    b = cpu_ldub_code(env, s->pc++) | 0x100;
                    break;
                case 0x02: /* Implied 0f 38 leading opcode bytes.  */
                    b = 0x138;
                    break;
                case 0x03: /* Implied 0f 3a leading opcode bytes.  */
                    b = 0x13a;
                    break;
                default:   /* Reserved for future use.  */
                    goto illegal_op;
                }
            }
            s->vex_v = (~vex3 >> 3) & 0xf;
            s->vex_l = (vex3 >> 2) & 1;
            prefixes |= pp_prefix[vex3 & 3] | PREFIX_VEX;
        }
        break;
    }

    /* Post-process prefixes.  */
    if (CODE64(s)) {
        /* In 64-bit mode, the default data size is 32-bit.  Select 64-bit
           data with rex_w, and 16-bit data with 0x66; rex_w takes precedence
           over 0x66 if both are present.  */
        dflag = (rex_w > 0 ? 2 : prefixes & PREFIX_DATA ? 0 : 1);
        /* In 64-bit mode, 0x67 selects 32-bit addressing.  */
        aflag = (prefixes & PREFIX_ADR ? 1 : 2);
    } else {
        /* In 16/32-bit mode, 0x66 selects the opposite data size.  */
        dflag = s->code32;
        if (prefixes & PREFIX_DATA) {
            dflag ^= 1;
        }
        /* In 16/32-bit mode, 0x67 selects the opposite addressing.  */
        aflag = s->code32;
        if (prefixes & PREFIX_ADR) {
            aflag ^= 1;
        }
    }

    s->prefix = prefixes;
    s->aflag = aflag;
    s->dflag = dflag;

    /* lock generation */
    if (prefixes & PREFIX_LOCK)
        gen_helper_lock();

    /* now check op code */
 reswitch:
    switch(b) {
    case 0x0f:
        /**************************/
        /* extended op code */
        b = cpu_ldub_code(env, s->pc++) | 0x100;
        goto reswitch;

        /**************************/
        /* arith & logic */
    case 0x00 ... 0x05:
    case 0x08 ... 0x0d:
    case 0x10 ... 0x15:
    case 0x18 ... 0x1d:
    case 0x20 ... 0x25:
    case 0x28 ... 0x2d:
    case 0x30 ... 0x35:
    case 0x38 ... 0x3d:
        {
            int op, f, val;
            op = (b >> 3) & 7;
            f = (b >> 1) & 3;

            if ((b & 1) == 0)
                ot = MO_8;
            else
                ot = dflag + MO_16;

            switch(f) {
            case 0: /* OP Ev, Gv */
                modrm = cpu_ldub_code(env, s->pc++);
                reg = ((modrm >> 3) & 7) | rex_r;
                mod = (modrm >> 6) & 3;
                rm = (modrm & 7) | REX_B(s);
                if (mod != 3) {
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    opreg = OR_TMP0;
                } else if (op == OP_XORL && rm == reg) {
                xor_zero:
                    /* xor reg, reg optimisation */
                    set_cc_op(s, CC_OP_CLR);
                    gen_op_movl_T0_0();
                    gen_op_mov_reg_T0(ot, reg);
                    break;
                } else {
                    opreg = rm;
                }
                gen_op_mov_TN_reg(ot, 1, reg);
                gen_op(s, op, ot, opreg);
                break;
            case 1: /* OP Gv, Ev */
                modrm = cpu_ldub_code(env, s->pc++);
                mod = (modrm >> 6) & 3;
                reg = ((modrm >> 3) & 7) | rex_r;
                rm = (modrm & 7) | REX_B(s);
                if (mod != 3) {
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    gen_op_ld_T1_A0(s, ot);
                } else if (op == OP_XORL && rm == reg) {
                    goto xor_zero;
                } else {
                    gen_op_mov_TN_reg(ot, 1, rm);
                }
                gen_op(s, op, ot, reg);
                break;
            case 2: /* OP A, Iv */
                val = insn_get(env, s, ot);
                gen_op_movl_T1_im(val);
                gen_op(s, op, ot, OR_EAX);
                break;
            }
        }
        break;

    case 0x82:
        if (CODE64(s))
            goto illegal_op;
    case 0x80: /* GRP1 */
    case 0x81:
    case 0x83:
        {
            int val;

            if ((b & 1) == 0)
                ot = MO_8;
            else
                ot = dflag + MO_16;

            modrm = cpu_ldub_code(env, s->pc++);
            mod = (modrm >> 6) & 3;
            rm = (modrm & 7) | REX_B(s);
            op = (modrm >> 3) & 7;

            if (mod != 3) {
                if (b == 0x83)
                    s->rip_offset = 1;
                else
                    s->rip_offset = insn_const_size(ot);
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                opreg = OR_TMP0;
            } else {
                opreg = rm;
            }

            switch(b) {
            default:
            case 0x80:
            case 0x81:
            case 0x82:
                val = insn_get(env, s, ot);
                break;
            case 0x83:
                val = (int8_t)insn_get(env, s, MO_8);
                break;
            }
            gen_op_movl_T1_im(val);
            gen_op(s, op, ot, opreg);
        }
        break;

        /**************************/
        /* inc, dec, and other misc arith */
    case 0x40 ... 0x47: /* inc Gv */
        ot = dflag ? MO_32 : MO_16;
        gen_inc(s, ot, OR_EAX + (b & 7), 1);
        break;
    case 0x48 ... 0x4f: /* dec Gv */
        ot = dflag ? MO_32 : MO_16;
        gen_inc(s, ot, OR_EAX + (b & 7), -1);
        break;
    case 0xf6: /* GRP3 */
    case 0xf7:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;

        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        rm = (modrm & 7) | REX_B(s);
        op = (modrm >> 3) & 7;
        if (mod != 3) {
            if (op == 0)
                s->rip_offset = insn_const_size(ot);
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
        } else {
            gen_op_mov_TN_reg(ot, 0, rm);
        }

        switch(op) {
        case 0: /* test */
            val = insn_get(env, s, ot);
            gen_op_movl_T1_im(val);
            gen_op_testl_T0_T1_cc();
            set_cc_op(s, CC_OP_LOGICB + ot);
            break;
        case 2: /* not */
            tcg_gen_not_tl(cpu_T[0], cpu_T[0]);
            if (mod != 3) {
                gen_op_st_T0_A0(s, ot);
            } else {
                gen_op_mov_reg_T0(ot, rm);
            }
            break;
        case 3: /* neg */
            tcg_gen_neg_tl(cpu_T[0], cpu_T[0]);
            if (mod != 3) {
                gen_op_st_T0_A0(s, ot);
            } else {
                gen_op_mov_reg_T0(ot, rm);
            }
            gen_op_update_neg_cc();
            set_cc_op(s, CC_OP_SUBB + ot);
            break;
        case 4: /* mul */
            switch(ot) {
            case MO_8:
                gen_op_mov_TN_reg(MO_8, 1, R_EAX);
                tcg_gen_ext8u_tl(cpu_T[0], cpu_T[0]);
                tcg_gen_ext8u_tl(cpu_T[1], cpu_T[1]);
                /* XXX: use 32 bit mul which could be faster */
                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                gen_op_mov_reg_T0(MO_16, R_EAX);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                tcg_gen_andi_tl(cpu_cc_src, cpu_T[0], 0xff00);
                set_cc_op(s, CC_OP_MULB);
                break;
            case MO_16:
                gen_op_mov_TN_reg(MO_16, 1, R_EAX);
                tcg_gen_ext16u_tl(cpu_T[0], cpu_T[0]);
                tcg_gen_ext16u_tl(cpu_T[1], cpu_T[1]);
                /* XXX: use 32 bit mul which could be faster */
                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                gen_op_mov_reg_T0(MO_16, R_EAX);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 16);
                gen_op_mov_reg_T0(MO_16, R_EDX);
                tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
                set_cc_op(s, CC_OP_MULW);
                break;
            default:
            case MO_32:
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_regs[R_EAX]);
                tcg_gen_mulu2_i32(cpu_tmp2_i32, cpu_tmp3_i32,
                                  cpu_tmp2_i32, cpu_tmp3_i32);
                tcg_gen_extu_i32_tl(cpu_regs[R_EAX], cpu_tmp2_i32);
                tcg_gen_extu_i32_tl(cpu_regs[R_EDX], cpu_tmp3_i32);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
                tcg_gen_mov_tl(cpu_cc_src, cpu_regs[R_EDX]);
                set_cc_op(s, CC_OP_MULL);
                break;
#ifdef TARGET_X86_64
            case MO_64:
                tcg_gen_mulu2_i64(cpu_regs[R_EAX], cpu_regs[R_EDX],
                                  cpu_T[0], cpu_regs[R_EAX]);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
                tcg_gen_mov_tl(cpu_cc_src, cpu_regs[R_EDX]);
                set_cc_op(s, CC_OP_MULQ);
                break;
#endif
            }
            break;
        case 5: /* imul */
            switch(ot) {
            case MO_8:
                gen_op_mov_TN_reg(MO_8, 1, R_EAX);
                tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
                tcg_gen_ext8s_tl(cpu_T[1], cpu_T[1]);
                /* XXX: use 32 bit mul which could be faster */
                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                gen_op_mov_reg_T0(MO_16, R_EAX);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                tcg_gen_ext8s_tl(cpu_tmp0, cpu_T[0]);
                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
                set_cc_op(s, CC_OP_MULB);
                break;
            case MO_16:
                gen_op_mov_TN_reg(MO_16, 1, R_EAX);
                tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
                tcg_gen_ext16s_tl(cpu_T[1], cpu_T[1]);
                /* XXX: use 32 bit mul which could be faster */
                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
                gen_op_mov_reg_T0(MO_16, R_EAX);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
                tcg_gen_ext16s_tl(cpu_tmp0, cpu_T[0]);
                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 16);
                gen_op_mov_reg_T0(MO_16, R_EDX);
                set_cc_op(s, CC_OP_MULW);
                break;
            default:
            case MO_32:
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_regs[R_EAX]);
                tcg_gen_muls2_i32(cpu_tmp2_i32, cpu_tmp3_i32,
                                  cpu_tmp2_i32, cpu_tmp3_i32);
                tcg_gen_extu_i32_tl(cpu_regs[R_EAX], cpu_tmp2_i32);
                tcg_gen_extu_i32_tl(cpu_regs[R_EDX], cpu_tmp3_i32);
                tcg_gen_sari_i32(cpu_tmp2_i32, cpu_tmp2_i32, 31);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
                tcg_gen_sub_i32(cpu_tmp2_i32, cpu_tmp2_i32, cpu_tmp3_i32);
                tcg_gen_extu_i32_tl(cpu_cc_src, cpu_tmp2_i32);
                set_cc_op(s, CC_OP_MULL);
                break;
#ifdef TARGET_X86_64
            case MO_64:
                tcg_gen_muls2_i64(cpu_regs[R_EAX], cpu_regs[R_EDX],
                                  cpu_T[0], cpu_regs[R_EAX]);
                tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
                tcg_gen_sari_tl(cpu_cc_src, cpu_regs[R_EAX], 63);
                tcg_gen_sub_tl(cpu_cc_src, cpu_cc_src, cpu_regs[R_EDX]);
                set_cc_op(s, CC_OP_MULQ);
                break;
#endif
            }
            break;
        case 6: /* div */
            switch(ot) {
            case MO_8:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_divb_AL(cpu_env, cpu_T[0]);
                break;
            case MO_16:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_divw_AX(cpu_env, cpu_T[0]);
                break;
            default:
            case MO_32:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_divl_EAX(cpu_env, cpu_T[0]);
                break;
#ifdef TARGET_X86_64
            case MO_64:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_divq_EAX(cpu_env, cpu_T[0]);
                break;
#endif
            }
            break;
        case 7: /* idiv */
            switch(ot) {
            case MO_8:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_idivb_AL(cpu_env, cpu_T[0]);
                break;
            case MO_16:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_idivw_AX(cpu_env, cpu_T[0]);
                break;
            default:
            case MO_32:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_idivl_EAX(cpu_env, cpu_T[0]);
                break;
#ifdef TARGET_X86_64
            case MO_64:
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_idivq_EAX(cpu_env, cpu_T[0]);
                break;
#endif
            }
            break;
        default:
            goto illegal_op;
        }
        break;

    case 0xfe: /* GRP4 */
    case 0xff: /* GRP5 */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;

        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        rm = (modrm & 7) | REX_B(s);
        op = (modrm >> 3) & 7;
        if (op >= 2 && b == 0xfe) {
            goto illegal_op;
        }
        if (CODE64(s)) {
            if (op == 2 || op == 4) {
                /* operand size for jumps is 64 bit */
                ot = MO_64;
            } else if (op == 3 || op == 5) {
                ot = dflag ? MO_32 + (rex_w == 1) : MO_16;
            } else if (op == 6) {
                /* default push size is 64 bit */
                ot = dflag ? MO_64 : MO_16;
            }
        }
        if (mod != 3) {
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            if (op >= 2 && op != 3 && op != 5)
                gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
        } else {
            gen_op_mov_TN_reg(ot, 0, rm);
        }

        switch(op) {
        case 0: /* inc Ev */
            if (mod != 3)
                opreg = OR_TMP0;
            else
                opreg = rm;
            gen_inc(s, ot, opreg, 1);
            break;
        case 1: /* dec Ev */
            if (mod != 3)
                opreg = OR_TMP0;
            else
                opreg = rm;
            gen_inc(s, ot, opreg, -1);
            break;
        case 2: /* call Ev */
            /* XXX: optimize if memory (no 'and' is necessary) */
            if (s->dflag == 0)
                gen_op_andl_T0_ffff();
            next_eip = s->pc - s->cs_base;
            gen_movtl_T1_im(next_eip);
            gen_push_T1(s);
            gen_op_jmp_T0();
            gen_eob(s);
            break;
        case 3: /* lcall Ev */
            gen_op_ld_T1_A0(s, ot);
            gen_add_A0_im(s, 1 << (ot - MO_16 + 1));
            gen_op_ldu_T0_A0(s, MO_16);
        do_lcall:
            if (s->pe && !s->vm86) {
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_lcall_protected(cpu_env, cpu_tmp2_i32, cpu_T[1],
                                           tcg_const_i32(dflag),
                                           tcg_const_i32(s->pc - pc_start));
            } else {
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_lcall_real(cpu_env, cpu_tmp2_i32, cpu_T[1],
                                      tcg_const_i32(dflag),
                                      tcg_const_i32(s->pc - s->cs_base));
            }
            gen_eob(s);
            break;
        case 4: /* jmp Ev */
            if (s->dflag == 0)
                gen_op_andl_T0_ffff();
            gen_op_jmp_T0();
            gen_eob(s);
            break;
        case 5: /* ljmp Ev */
            gen_op_ld_T1_A0(s, ot);
            gen_add_A0_im(s, 1 << (ot - MO_16 + 1));
            gen_op_ldu_T0_A0(s, MO_16);
        do_ljmp:
            if (s->pe && !s->vm86) {
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_ljmp_protected(cpu_env, cpu_tmp2_i32, cpu_T[1],
                                          tcg_const_i32(s->pc - pc_start));
            } else {
                gen_op_movl_seg_T0_vm(R_CS);
                gen_op_movl_T0_T1();
                gen_op_jmp_T0();
            }
            gen_eob(s);
            break;
        case 6: /* push Ev */
            gen_push_T0(s);
            break;
        default:
            goto illegal_op;
        }
        break;

    case 0x84: /* test Ev, Gv */
    case 0x85:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;

        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;

        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
        gen_op_mov_TN_reg(ot, 1, reg);
        gen_op_testl_T0_T1_cc();
        set_cc_op(s, CC_OP_LOGICB + ot);
        break;

    case 0xa8: /* test eAX, Iv */
    case 0xa9:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        val = insn_get(env, s, ot);

        gen_op_mov_TN_reg(ot, 0, OR_EAX);
        gen_op_movl_T1_im(val);
        gen_op_testl_T0_T1_cc();
        set_cc_op(s, CC_OP_LOGICB + ot);
        break;

    case 0x98: /* CWDE/CBW */
#ifdef TARGET_X86_64
        if (dflag == 2) {
            gen_op_mov_TN_reg(MO_32, 0, R_EAX);
            tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
            gen_op_mov_reg_T0(MO_64, R_EAX);
        } else
#endif
        if (dflag == 1) {
            gen_op_mov_TN_reg(MO_16, 0, R_EAX);
            tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
            gen_op_mov_reg_T0(MO_32, R_EAX);
        } else {
            gen_op_mov_TN_reg(MO_8, 0, R_EAX);
            tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
            gen_op_mov_reg_T0(MO_16, R_EAX);
        }
        break;
    case 0x99: /* CDQ/CWD */
#ifdef TARGET_X86_64
        if (dflag == 2) {
            gen_op_mov_TN_reg(MO_64, 0, R_EAX);
            tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 63);
            gen_op_mov_reg_T0(MO_64, R_EDX);
        } else
#endif
        if (dflag == 1) {
            gen_op_mov_TN_reg(MO_32, 0, R_EAX);
            tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
            tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 31);
            gen_op_mov_reg_T0(MO_32, R_EDX);
        } else {
            gen_op_mov_TN_reg(MO_16, 0, R_EAX);
            tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
            tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 15);
            gen_op_mov_reg_T0(MO_16, R_EDX);
        }
        break;
    case 0x1af: /* imul Gv, Ev */
    case 0x69: /* imul Gv, Ev, I */
    case 0x6b:
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        if (b == 0x69)
            s->rip_offset = insn_const_size(ot);
        else if (b == 0x6b)
            s->rip_offset = 1;
        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
        if (b == 0x69) {
            val = insn_get(env, s, ot);
            gen_op_movl_T1_im(val);
        } else if (b == 0x6b) {
            val = (int8_t)insn_get(env, s, MO_8);
            gen_op_movl_T1_im(val);
        } else {
            gen_op_mov_TN_reg(ot, 1, reg);
        }
        switch (ot) {
#ifdef TARGET_X86_64
        case MO_64:
            tcg_gen_muls2_i64(cpu_regs[reg], cpu_T[1], cpu_T[0], cpu_T[1]);
            tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[reg]);
            tcg_gen_sari_tl(cpu_cc_src, cpu_cc_dst, 63);
            tcg_gen_sub_tl(cpu_cc_src, cpu_cc_src, cpu_T[1]);
            break;
#endif
        case MO_32:
            tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
            tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_T[1]);
            tcg_gen_muls2_i32(cpu_tmp2_i32, cpu_tmp3_i32,
                              cpu_tmp2_i32, cpu_tmp3_i32);
            tcg_gen_extu_i32_tl(cpu_regs[reg], cpu_tmp2_i32);
            tcg_gen_sari_i32(cpu_tmp2_i32, cpu_tmp2_i32, 31);
            tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[reg]);
            tcg_gen_sub_i32(cpu_tmp2_i32, cpu_tmp2_i32, cpu_tmp3_i32);
            tcg_gen_extu_i32_tl(cpu_cc_src, cpu_tmp2_i32);
            break;
        default:
            tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
            tcg_gen_ext16s_tl(cpu_T[1], cpu_T[1]);
            /* XXX: use 32 bit mul which could be faster */
            tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
            tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
            tcg_gen_ext16s_tl(cpu_tmp0, cpu_T[0]);
            tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
            gen_op_mov_reg_T0(ot, reg);
            break;
        }
        set_cc_op(s, CC_OP_MULB + ot);
        break;
    case 0x1c0:
    case 0x1c1: /* xadd Ev, Gv */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        mod = (modrm >> 6) & 3;
        if (mod == 3) {
            rm = (modrm & 7) | REX_B(s);
            gen_op_mov_TN_reg(ot, 0, reg);
            gen_op_mov_TN_reg(ot, 1, rm);
            gen_op_addl_T0_T1();
            gen_op_mov_reg_T1(ot, reg);
            gen_op_mov_reg_T0(ot, rm);
        } else {
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_op_mov_TN_reg(ot, 0, reg);
            gen_op_ld_T1_A0(s, ot);
            gen_op_addl_T0_T1();
            gen_op_st_T0_A0(s, ot);
            gen_op_mov_reg_T1(ot, reg);
        }
        gen_op_update2_cc();
        set_cc_op(s, CC_OP_ADDB + ot);
        break;
    case 0x1b0:
    case 0x1b1: /* cmpxchg Ev, Gv */
        {
            int label1, label2;
            TCGv t0, t1, t2, a0;

            if ((b & 1) == 0)
                ot = MO_8;
            else
                ot = dflag + MO_16;
            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;
            mod = (modrm >> 6) & 3;
            t0 = tcg_temp_local_new();
            t1 = tcg_temp_local_new();
            t2 = tcg_temp_local_new();
            a0 = tcg_temp_local_new();
            gen_op_mov_v_reg(ot, t1, reg);
            if (mod == 3) {
                rm = (modrm & 7) | REX_B(s);
                gen_op_mov_v_reg(ot, t0, rm);
            } else {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                tcg_gen_mov_tl(a0, cpu_A0);
                gen_op_ld_v(s, ot, t0, a0);
                rm = 0; /* avoid warning */
            }
            label1 = gen_new_label();
            tcg_gen_mov_tl(t2, cpu_regs[R_EAX]);
            gen_extu(ot, t0);
            gen_extu(ot, t2);
            tcg_gen_brcond_tl(TCG_COND_EQ, t2, t0, label1);
            label2 = gen_new_label();
            if (mod == 3) {
                gen_op_mov_reg_v(ot, R_EAX, t0);
                tcg_gen_br(label2);
                gen_set_label(label1);
                gen_op_mov_reg_v(ot, rm, t1);
            } else {
                /* perform no-op store cycle like physical cpu; must be
                   before changing accumulator to ensure idempotency if
                   the store faults and the instruction is restarted */
                gen_op_st_v(s, ot, t0, a0);
                gen_op_mov_reg_v(ot, R_EAX, t0);
                tcg_gen_br(label2);
                gen_set_label(label1);
                gen_op_st_v(s, ot, t1, a0);
            }
            gen_set_label(label2);
            tcg_gen_mov_tl(cpu_cc_src, t0);
            tcg_gen_mov_tl(cpu_cc_srcT, t2);
            tcg_gen_sub_tl(cpu_cc_dst, t2, t0);
            set_cc_op(s, CC_OP_SUBB + ot);
            tcg_temp_free(t0);
            tcg_temp_free(t1);
            tcg_temp_free(t2);
            tcg_temp_free(a0);
        }
        break;
    case 0x1c7: /* cmpxchg8b */
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        if ((mod == 3) || ((modrm & 0x38) != 0x8))
            goto illegal_op;
#ifdef TARGET_X86_64
        if (dflag == 2) {
            if (!(s->cpuid_ext_features & CPUID_EXT_CX16))
                goto illegal_op;
            gen_jmp_im(pc_start - s->cs_base);
            gen_update_cc_op(s);
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_helper_cmpxchg16b(cpu_env, cpu_A0);
        } else
#endif        
        {
            if (!(s->cpuid_features & CPUID_CX8))
                goto illegal_op;
            gen_jmp_im(pc_start - s->cs_base);
            gen_update_cc_op(s);
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_helper_cmpxchg8b(cpu_env, cpu_A0);
        }
        set_cc_op(s, CC_OP_EFLAGS);
        break;

        /**************************/
        /* push/pop */
    case 0x50 ... 0x57: /* push */
        gen_op_mov_TN_reg(MO_32, 0, (b & 7) | REX_B(s));
        gen_push_T0(s);
        break;
    case 0x58 ... 0x5f: /* pop */
        if (CODE64(s)) {
            ot = dflag ? MO_64 : MO_16;
        } else {
            ot = dflag + MO_16;
        }
        gen_pop_T0(s);
        /* NOTE: order is important for pop %sp */
        gen_pop_update(s);
        gen_op_mov_reg_T0(ot, (b & 7) | REX_B(s));
        break;
    case 0x60: /* pusha */
        if (CODE64(s))
            goto illegal_op;
        gen_pusha(s);
        break;
    case 0x61: /* popa */
        if (CODE64(s))
            goto illegal_op;
        gen_popa(s);
        break;
    case 0x68: /* push Iv */
    case 0x6a:
        if (CODE64(s)) {
            ot = dflag ? MO_64 : MO_16;
        } else {
            ot = dflag + MO_16;
        }
        if (b == 0x68)
            val = insn_get(env, s, ot);
        else
            val = (int8_t)insn_get(env, s, MO_8);
        gen_op_movl_T0_im(val);
        gen_push_T0(s);
        break;
    case 0x8f: /* pop Ev */
        if (CODE64(s)) {
            ot = dflag ? MO_64 : MO_16;
        } else {
            ot = dflag + MO_16;
        }
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        gen_pop_T0(s);
        if (mod == 3) {
            /* NOTE: order is important for pop %sp */
            gen_pop_update(s);
            rm = (modrm & 7) | REX_B(s);
            gen_op_mov_reg_T0(ot, rm);
        } else {
            /* NOTE: order is important too for MMU exceptions */
            s->popl_esp_hack = 1 << ot;
            gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
            s->popl_esp_hack = 0;
            gen_pop_update(s);
        }
        break;
    case 0xc8: /* enter */
        {
            int level;
            val = cpu_lduw_code(env, s->pc);
            s->pc += 2;
            level = cpu_ldub_code(env, s->pc++);
            gen_enter(s, val, level);
        }
        break;
    case 0xc9: /* leave */
        /* XXX: exception not precise (ESP is updated before potential exception) */
        if (CODE64(s)) {
            gen_op_mov_TN_reg(MO_64, 0, R_EBP);
            gen_op_mov_reg_T0(MO_64, R_ESP);
        } else if (s->ss32) {
            gen_op_mov_TN_reg(MO_32, 0, R_EBP);
            gen_op_mov_reg_T0(MO_32, R_ESP);
        } else {
            gen_op_mov_TN_reg(MO_16, 0, R_EBP);
            gen_op_mov_reg_T0(MO_16, R_ESP);
        }
        gen_pop_T0(s);
        if (CODE64(s)) {
            ot = dflag ? MO_64 : MO_16;
        } else {
            ot = dflag + MO_16;
        }
        gen_op_mov_reg_T0(ot, R_EBP);
        gen_pop_update(s);
        break;
    case 0x06: /* push es */
    case 0x0e: /* push cs */
    case 0x16: /* push ss */
    case 0x1e: /* push ds */
        if (CODE64(s))
            goto illegal_op;
        gen_op_movl_T0_seg(b >> 3);
        gen_push_T0(s);
        break;
    case 0x1a0: /* push fs */
    case 0x1a8: /* push gs */
        gen_op_movl_T0_seg((b >> 3) & 7);
        gen_push_T0(s);
        break;
    case 0x07: /* pop es */
    case 0x17: /* pop ss */
    case 0x1f: /* pop ds */
        if (CODE64(s))
            goto illegal_op;
        reg = b >> 3;
        gen_pop_T0(s);
        gen_movl_seg_T0(s, reg, pc_start - s->cs_base);
        gen_pop_update(s);
        if (reg == R_SS) {
            /* if reg == SS, inhibit interrupts/trace. */
            /* If several instructions disable interrupts, only the
               _first_ does it */
            if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
                gen_helper_set_inhibit_irq(cpu_env);
            s->tf = 0;
        }
        if (s->is_jmp) {
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;
    case 0x1a1: /* pop fs */
    case 0x1a9: /* pop gs */
        gen_pop_T0(s);
        gen_movl_seg_T0(s, (b >> 3) & 7, pc_start - s->cs_base);
        gen_pop_update(s);
        if (s->is_jmp) {
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;

        /**************************/
        /* mov */
    case 0x88:
    case 0x89: /* mov Gv, Ev */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;

        /* generate a generic store */
        gen_ldst_modrm(env, s, modrm, ot, reg, 1);
        break;
    case 0xc6:
    case 0xc7: /* mov Ev, Iv */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        if (mod != 3) {
            s->rip_offset = insn_const_size(ot);
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
        }
        val = insn_get(env, s, ot);
        gen_op_movl_T0_im(val);
        if (mod != 3)
            gen_op_st_T0_A0(s, ot);
        else
            gen_op_mov_reg_T0(ot, (modrm & 7) | REX_B(s));
        break;
    case 0x8a:
    case 0x8b: /* mov Ev, Gv */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = MO_16 + dflag;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;

        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
        gen_op_mov_reg_T0(ot, reg);
        break;
    case 0x8e: /* mov seg, Gv */
        modrm = cpu_ldub_code(env, s->pc++);
        reg = (modrm >> 3) & 7;
        if (reg >= 6 || reg == R_CS)
            goto illegal_op;
        gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
        gen_movl_seg_T0(s, reg, pc_start - s->cs_base);
        if (reg == R_SS) {
            /* if reg == SS, inhibit interrupts/trace */
            /* If several instructions disable interrupts, only the
               _first_ does it */
            if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
                gen_helper_set_inhibit_irq(cpu_env);
            s->tf = 0;
        }
        if (s->is_jmp) {
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;
    case 0x8c: /* mov Gv, seg */
        modrm = cpu_ldub_code(env, s->pc++);
        reg = (modrm >> 3) & 7;
        mod = (modrm >> 6) & 3;
        if (reg >= 6)
            goto illegal_op;
        gen_op_movl_T0_seg(reg);
        if (mod == 3)
            ot = MO_16 + dflag;
        else
            ot = MO_16;
        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
        break;

    case 0x1b6: /* movzbS Gv, Eb */
    case 0x1b7: /* movzwS Gv, Eb */
    case 0x1be: /* movsbS Gv, Eb */
    case 0x1bf: /* movswS Gv, Eb */
        {
            int d_ot;
            /* d_ot is the size of destination */
            d_ot = dflag + MO_16;
            /* ot is the size of source */
            ot = (b & 1) + MO_8;
            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;
            mod = (modrm >> 6) & 3;
            rm = (modrm & 7) | REX_B(s);

            if (mod == 3) {
                gen_op_mov_TN_reg(ot, 0, rm);
                switch(ot | (b & 8)) {
                case MO_8:
                    tcg_gen_ext8u_tl(cpu_T[0], cpu_T[0]);
                    break;
                case MO_8 | 8:
                    tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
                    break;
                case MO_16:
                    tcg_gen_ext16u_tl(cpu_T[0], cpu_T[0]);
                    break;
                default:
                case MO_16 | 8:
                    tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
                    break;
                }
                gen_op_mov_reg_T0(d_ot, reg);
            } else {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                if (b & 8) {
                    gen_op_lds_T0_A0(s, ot);
                } else {
                    gen_op_ldu_T0_A0(s, ot);
                }
                gen_op_mov_reg_T0(d_ot, reg);
            }
        }
        break;

    case 0x8d: /* lea */
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        if (mod == 3)
            goto illegal_op;
        reg = ((modrm >> 3) & 7) | rex_r;
        /* we must ensure that no segment is added */
        s->override = -1;
        val = s->addseg;
        s->addseg = 0;
        gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
        s->addseg = val;
        gen_op_mov_reg_A0(ot - MO_16, reg);
        break;

    case 0xa0: /* mov EAX, Ov */
    case 0xa1:
    case 0xa2: /* mov Ov, EAX */
    case 0xa3:
        {
            target_ulong offset_addr;

            if ((b & 1) == 0)
                ot = MO_8;
            else
                ot = dflag + MO_16;
#ifdef TARGET_X86_64
            if (s->aflag == 2) {
                offset_addr = cpu_ldq_code(env, s->pc);
                s->pc += 8;
                gen_op_movq_A0_im(offset_addr);
            } else
#endif
            {
                if (s->aflag) {
                    offset_addr = insn_get(env, s, MO_32);
                } else {
                    offset_addr = insn_get(env, s, MO_16);
                }
                gen_op_movl_A0_im(offset_addr);
            }
            gen_add_A0_ds_seg(s);
            if ((b & 2) == 0) {
                gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
                gen_op_mov_reg_T0(ot, R_EAX);
            } else {
                gen_op_mov_TN_reg(ot, 0, R_EAX);
                gen_op_st_T0_A0(s, ot);
            }
        }
        break;
    case 0xd7: /* xlat */
#ifdef TARGET_X86_64
        if (s->aflag == 2) {
            gen_op_movq_A0_reg(R_EBX);
            gen_op_mov_TN_reg(MO_64, 0, R_EAX);
            tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xff);
            tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_T[0]);
        } else
#endif
        {
            gen_op_movl_A0_reg(R_EBX);
            gen_op_mov_TN_reg(MO_32, 0, R_EAX);
            tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xff);
            tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_T[0]);
            if (s->aflag == 0)
                gen_op_andl_A0_ffff();
            else
                tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffffffff);
        }
        gen_add_A0_ds_seg(s);
        gen_op_ldu_T0_A0(s, MO_8);
        gen_op_mov_reg_T0(MO_8, R_EAX);
        break;
    case 0xb0 ... 0xb7: /* mov R, Ib */
        val = insn_get(env, s, MO_8);
        gen_op_movl_T0_im(val);
        gen_op_mov_reg_T0(MO_8, (b & 7) | REX_B(s));
        break;
    case 0xb8 ... 0xbf: /* mov R, Iv */
#ifdef TARGET_X86_64
        if (dflag == 2) {
            uint64_t tmp;
            /* 64 bit case */
            tmp = cpu_ldq_code(env, s->pc);
            s->pc += 8;
            reg = (b & 7) | REX_B(s);
            gen_movtl_T0_im(tmp);
            gen_op_mov_reg_T0(MO_64, reg);
        } else
#endif
        {
            ot = dflag ? MO_32 : MO_16;
            val = insn_get(env, s, ot);
            reg = (b & 7) | REX_B(s);
            gen_op_movl_T0_im(val);
            gen_op_mov_reg_T0(ot, reg);
        }
        break;

    case 0x91 ... 0x97: /* xchg R, EAX */
    do_xchg_reg_eax:
        ot = dflag + MO_16;
        reg = (b & 7) | REX_B(s);
        rm = R_EAX;
        goto do_xchg_reg;
    case 0x86:
    case 0x87: /* xchg Ev, Gv */
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        mod = (modrm >> 6) & 3;
        if (mod == 3) {
            rm = (modrm & 7) | REX_B(s);
        do_xchg_reg:
            gen_op_mov_TN_reg(ot, 0, reg);
            gen_op_mov_TN_reg(ot, 1, rm);
            gen_op_mov_reg_T0(ot, rm);
            gen_op_mov_reg_T1(ot, reg);
        } else {
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_op_mov_TN_reg(ot, 0, reg);
            /* for xchg, lock is implicit */
            if (!(prefixes & PREFIX_LOCK))
                gen_helper_lock();
            gen_op_ld_T1_A0(s, ot);
            gen_op_st_T0_A0(s, ot);
            if (!(prefixes & PREFIX_LOCK))
                gen_helper_unlock();
            gen_op_mov_reg_T1(ot, reg);
        }
        break;
    case 0xc4: /* les Gv */
        /* In CODE64 this is VEX3; see above.  */
        op = R_ES;
        goto do_lxx;
    case 0xc5: /* lds Gv */
        /* In CODE64 this is VEX2; see above.  */
        op = R_DS;
        goto do_lxx;
    case 0x1b2: /* lss Gv */
        op = R_SS;
        goto do_lxx;
    case 0x1b4: /* lfs Gv */
        op = R_FS;
        goto do_lxx;
    case 0x1b5: /* lgs Gv */
        op = R_GS;
    do_lxx:
        ot = dflag ? MO_32 : MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        mod = (modrm >> 6) & 3;
        if (mod == 3)
            goto illegal_op;
        gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
        gen_op_ld_T1_A0(s, ot);
        gen_add_A0_im(s, 1 << (ot - MO_16 + 1));
        /* load the segment first to handle exceptions properly */
        gen_op_ldu_T0_A0(s, MO_16);
        gen_movl_seg_T0(s, op, pc_start - s->cs_base);
        /* then put the data */
        gen_op_mov_reg_T1(ot, reg);
        if (s->is_jmp) {
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;

        /************************/
        /* shifts */
    case 0xc0:
    case 0xc1:
        /* shift Ev,Ib */
        shift = 2;
    grp2:
        {
            if ((b & 1) == 0)
                ot = MO_8;
            else
                ot = dflag + MO_16;

            modrm = cpu_ldub_code(env, s->pc++);
            mod = (modrm >> 6) & 3;
            op = (modrm >> 3) & 7;

            if (mod != 3) {
                if (shift == 2) {
                    s->rip_offset = 1;
                }
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                opreg = OR_TMP0;
            } else {
                opreg = (modrm & 7) | REX_B(s);
            }

            /* simpler op */
            if (shift == 0) {
                gen_shift(s, op, ot, opreg, OR_ECX);
            } else {
                if (shift == 2) {
                    shift = cpu_ldub_code(env, s->pc++);
                }
                gen_shifti(s, op, ot, opreg, shift);
            }
        }
        break;
    case 0xd0:
    case 0xd1:
        /* shift Ev,1 */
        shift = 1;
        goto grp2;
    case 0xd2:
    case 0xd3:
        /* shift Ev,cl */
        shift = 0;
        goto grp2;

    case 0x1a4: /* shld imm */
        op = 0;
        shift = 1;
        goto do_shiftd;
    case 0x1a5: /* shld cl */
        op = 0;
        shift = 0;
        goto do_shiftd;
    case 0x1ac: /* shrd imm */
        op = 1;
        shift = 1;
        goto do_shiftd;
    case 0x1ad: /* shrd cl */
        op = 1;
        shift = 0;
    do_shiftd:
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        rm = (modrm & 7) | REX_B(s);
        reg = ((modrm >> 3) & 7) | rex_r;
        if (mod != 3) {
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            opreg = OR_TMP0;
        } else {
            opreg = rm;
        }
        gen_op_mov_TN_reg(ot, 1, reg);

        if (shift) {
            TCGv imm = tcg_const_tl(cpu_ldub_code(env, s->pc++));
            gen_shiftd_rm_T1(s, ot, opreg, op, imm);
            tcg_temp_free(imm);
        } else {
            gen_shiftd_rm_T1(s, ot, opreg, op, cpu_regs[R_ECX]);
        }
        break;

        /************************/
        /* floats */
    case 0xd8 ... 0xdf:
        if (s->flags & (HF_EM_MASK | HF_TS_MASK)) {
            /* if CR0.EM or CR0.TS are set, generate an FPU exception */
            /* XXX: what to do if illegal op ? */
            gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
            break;
        }
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        rm = modrm & 7;
        op = ((b & 7) << 3) | ((modrm >> 3) & 7);
        if (mod != 3) {
            /* memory op */
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            switch(op) {
            case 0x00 ... 0x07: /* fxxxs */
            case 0x10 ... 0x17: /* fixxxl */
            case 0x20 ... 0x27: /* fxxxl */
            case 0x30 ... 0x37: /* fixxx */
                {
                    int op1;
                    op1 = op & 7;

                    switch(op >> 4) {
                    case 0:
                        gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_flds_FT0(cpu_env, cpu_tmp2_i32);
                        break;
                    case 1:
                        gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_fildl_FT0(cpu_env, cpu_tmp2_i32);
                        break;
                    case 2:
                        tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0,
                                            s->mem_index, MO_LEQ);
                        gen_helper_fldl_FT0(cpu_env, cpu_tmp1_i64);
                        break;
                    case 3:
                    default:
                        gen_op_lds_T0_A0(s, MO_16);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_fildl_FT0(cpu_env, cpu_tmp2_i32);
                        break;
                    }

                    gen_helper_fp_arith_ST0_FT0(op1);
                    if (op1 == 3) {
                        /* fcomp needs pop */
                        gen_helper_fpop(cpu_env);
                    }
                }
                break;
            case 0x08: /* flds */
            case 0x0a: /* fsts */
            case 0x0b: /* fstps */
            case 0x18 ... 0x1b: /* fildl, fisttpl, fistl, fistpl */
            case 0x28 ... 0x2b: /* fldl, fisttpll, fstl, fstpl */
            case 0x38 ... 0x3b: /* filds, fisttps, fists, fistps */
                switch(op & 7) {
                case 0:
                    switch(op >> 4) {
                    case 0:
                        gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_flds_ST0(cpu_env, cpu_tmp2_i32);
                        break;
                    case 1:
                        gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_fildl_ST0(cpu_env, cpu_tmp2_i32);
                        break;
                    case 2:
                        tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0,
                                            s->mem_index, MO_LEQ);
                        gen_helper_fldl_ST0(cpu_env, cpu_tmp1_i64);
                        break;
                    case 3:
                    default:
                        gen_op_lds_T0_A0(s, MO_16);
                        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                        gen_helper_fildl_ST0(cpu_env, cpu_tmp2_i32);
                        break;
                    }
                    break;
                case 1:
                    /* XXX: the corresponding CPUID bit must be tested ! */
                    switch(op >> 4) {
                    case 1:
                        gen_helper_fisttl_ST0(cpu_tmp2_i32, cpu_env);
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        gen_op_st_T0_A0(s, MO_32);
                        break;
                    case 2:
                        gen_helper_fisttll_ST0(cpu_tmp1_i64, cpu_env);
                        tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0,
                                            s->mem_index, MO_LEQ);
                        break;
                    case 3:
                    default:
                        gen_helper_fistt_ST0(cpu_tmp2_i32, cpu_env);
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        gen_op_st_T0_A0(s, MO_16);
                        break;
                    }
                    gen_helper_fpop(cpu_env);
                    break;
                default:
                    switch(op >> 4) {
                    case 0:
                        gen_helper_fsts_ST0(cpu_tmp2_i32, cpu_env);
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        gen_op_st_T0_A0(s, MO_32);
                        break;
                    case 1:
                        gen_helper_fistl_ST0(cpu_tmp2_i32, cpu_env);
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        gen_op_st_T0_A0(s, MO_32);
                        break;
                    case 2:
                        gen_helper_fstl_ST0(cpu_tmp1_i64, cpu_env);
                        tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0,
                                            s->mem_index, MO_LEQ);
                        break;
                    case 3:
                    default:
                        gen_helper_fist_ST0(cpu_tmp2_i32, cpu_env);
                        tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                        gen_op_st_T0_A0(s, MO_16);
                        break;
                    }
                    if ((op & 7) == 3)
                        gen_helper_fpop(cpu_env);
                    break;
                }
                break;
            case 0x0c: /* fldenv mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fldenv(cpu_env, cpu_A0, tcg_const_i32(s->dflag));
                break;
            case 0x0d: /* fldcw mem */
                gen_op_ld_v(s, MO_16, cpu_T[0], cpu_A0);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_fldcw(cpu_env, cpu_tmp2_i32);
                break;
            case 0x0e: /* fnstenv mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fstenv(cpu_env, cpu_A0, tcg_const_i32(s->dflag));
                break;
            case 0x0f: /* fnstcw mem */
                gen_helper_fnstcw(cpu_tmp2_i32, cpu_env);
                tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                gen_op_st_T0_A0(s, MO_16);
                break;
            case 0x1d: /* fldt mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fldt_ST0(cpu_env, cpu_A0);
                break;
            case 0x1f: /* fstpt mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fstt_ST0(cpu_env, cpu_A0);
                gen_helper_fpop(cpu_env);
                break;
            case 0x2c: /* frstor mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_frstor(cpu_env, cpu_A0, tcg_const_i32(s->dflag));
                break;
            case 0x2e: /* fnsave mem */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fsave(cpu_env, cpu_A0, tcg_const_i32(s->dflag));
                break;
            case 0x2f: /* fnstsw mem */
                gen_helper_fnstsw(cpu_tmp2_i32, cpu_env);
                tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                gen_op_st_T0_A0(s, MO_16);
                break;
            case 0x3c: /* fbld */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fbld_ST0(cpu_env, cpu_A0);
                break;
            case 0x3e: /* fbstp */
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                gen_helper_fbst_ST0(cpu_env, cpu_A0);
                gen_helper_fpop(cpu_env);
                break;
            case 0x3d: /* fildll */
                tcg_gen_qemu_ld_i64(cpu_tmp1_i64, cpu_A0, s->mem_index, MO_LEQ);
                gen_helper_fildll_ST0(cpu_env, cpu_tmp1_i64);
                break;
            case 0x3f: /* fistpll */
                gen_helper_fistll_ST0(cpu_tmp1_i64, cpu_env);
                tcg_gen_qemu_st_i64(cpu_tmp1_i64, cpu_A0, s->mem_index, MO_LEQ);
                gen_helper_fpop(cpu_env);
                break;
            default:
                goto illegal_op;
            }
        } else {
            /* register float ops */
            opreg = rm;

            switch(op) {
            case 0x08: /* fld sti */
                gen_helper_fpush(cpu_env);
                gen_helper_fmov_ST0_STN(cpu_env,
                                        tcg_const_i32((opreg + 1) & 7));
                break;
            case 0x09: /* fxchg sti */
            case 0x29: /* fxchg4 sti, undocumented op */
            case 0x39: /* fxchg7 sti, undocumented op */
                gen_helper_fxchg_ST0_STN(cpu_env, tcg_const_i32(opreg));
                break;
            case 0x0a: /* grp d9/2 */
                switch(rm) {
                case 0: /* fnop */
                    /* check exceptions (FreeBSD FPU probe) */
                    gen_update_cc_op(s);
                    gen_jmp_im(pc_start - s->cs_base);
                    gen_helper_fwait(cpu_env);
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x0c: /* grp d9/4 */
                switch(rm) {
                case 0: /* fchs */
                    gen_helper_fchs_ST0(cpu_env);
                    break;
                case 1: /* fabs */
                    gen_helper_fabs_ST0(cpu_env);
                    break;
                case 4: /* ftst */
                    gen_helper_fldz_FT0(cpu_env);
                    gen_helper_fcom_ST0_FT0(cpu_env);
                    break;
                case 5: /* fxam */
                    gen_helper_fxam_ST0(cpu_env);
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x0d: /* grp d9/5 */
                {
                    switch(rm) {
                    case 0:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fld1_ST0(cpu_env);
                        break;
                    case 1:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldl2t_ST0(cpu_env);
                        break;
                    case 2:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldl2e_ST0(cpu_env);
                        break;
                    case 3:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldpi_ST0(cpu_env);
                        break;
                    case 4:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldlg2_ST0(cpu_env);
                        break;
                    case 5:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldln2_ST0(cpu_env);
                        break;
                    case 6:
                        gen_helper_fpush(cpu_env);
                        gen_helper_fldz_ST0(cpu_env);
                        break;
                    default:
                        goto illegal_op;
                    }
                }
                break;
            case 0x0e: /* grp d9/6 */
                switch(rm) {
                case 0: /* f2xm1 */
                    gen_helper_f2xm1(cpu_env);
                    break;
                case 1: /* fyl2x */
                    gen_helper_fyl2x(cpu_env);
                    break;
                case 2: /* fptan */
                    gen_helper_fptan(cpu_env);
                    break;
                case 3: /* fpatan */
                    gen_helper_fpatan(cpu_env);
                    break;
                case 4: /* fxtract */
                    gen_helper_fxtract(cpu_env);
                    break;
                case 5: /* fprem1 */
                    gen_helper_fprem1(cpu_env);
                    break;
                case 6: /* fdecstp */
                    gen_helper_fdecstp(cpu_env);
                    break;
                default:
                case 7: /* fincstp */
                    gen_helper_fincstp(cpu_env);
                    break;
                }
                break;
            case 0x0f: /* grp d9/7 */
                switch(rm) {
                case 0: /* fprem */
                    gen_helper_fprem(cpu_env);
                    break;
                case 1: /* fyl2xp1 */
                    gen_helper_fyl2xp1(cpu_env);
                    break;
                case 2: /* fsqrt */
                    gen_helper_fsqrt(cpu_env);
                    break;
                case 3: /* fsincos */
                    gen_helper_fsincos(cpu_env);
                    break;
                case 5: /* fscale */
                    gen_helper_fscale(cpu_env);
                    break;
                case 4: /* frndint */
                    gen_helper_frndint(cpu_env);
                    break;
                case 6: /* fsin */
                    gen_helper_fsin(cpu_env);
                    break;
                default:
                case 7: /* fcos */
                    gen_helper_fcos(cpu_env);
                    break;
                }
                break;
            case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */
            case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */
            case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */
                {
                    int op1;

                    op1 = op & 7;
                    if (op >= 0x20) {
                        gen_helper_fp_arith_STN_ST0(op1, opreg);
                        if (op >= 0x30)
                            gen_helper_fpop(cpu_env);
                    } else {
                        gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                        gen_helper_fp_arith_ST0_FT0(op1);
                    }
                }
                break;
            case 0x02: /* fcom */
            case 0x22: /* fcom2, undocumented op */
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fcom_ST0_FT0(cpu_env);
                break;
            case 0x03: /* fcomp */
            case 0x23: /* fcomp3, undocumented op */
            case 0x32: /* fcomp5, undocumented op */
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fcom_ST0_FT0(cpu_env);
                gen_helper_fpop(cpu_env);
                break;
            case 0x15: /* da/5 */
                switch(rm) {
                case 1: /* fucompp */
                    gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(1));
                    gen_helper_fucom_ST0_FT0(cpu_env);
                    gen_helper_fpop(cpu_env);
                    gen_helper_fpop(cpu_env);
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x1c:
                switch(rm) {
                case 0: /* feni (287 only, just do nop here) */
                    break;
                case 1: /* fdisi (287 only, just do nop here) */
                    break;
                case 2: /* fclex */
                    gen_helper_fclex(cpu_env);
                    break;
                case 3: /* fninit */
                    gen_helper_fninit(cpu_env);
                    break;
                case 4: /* fsetpm (287 only, just do nop here) */
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x1d: /* fucomi */
                if (!(s->cpuid_features & CPUID_CMOV)) {
                    goto illegal_op;
                }
                gen_update_cc_op(s);
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fucomi_ST0_FT0(cpu_env);
                set_cc_op(s, CC_OP_EFLAGS);
                break;
            case 0x1e: /* fcomi */
                if (!(s->cpuid_features & CPUID_CMOV)) {
                    goto illegal_op;
                }
                gen_update_cc_op(s);
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fcomi_ST0_FT0(cpu_env);
                set_cc_op(s, CC_OP_EFLAGS);
                break;
            case 0x28: /* ffree sti */
                gen_helper_ffree_STN(cpu_env, tcg_const_i32(opreg));
                break;
            case 0x2a: /* fst sti */
                gen_helper_fmov_STN_ST0(cpu_env, tcg_const_i32(opreg));
                break;
            case 0x2b: /* fstp sti */
            case 0x0b: /* fstp1 sti, undocumented op */
            case 0x3a: /* fstp8 sti, undocumented op */
            case 0x3b: /* fstp9 sti, undocumented op */
                gen_helper_fmov_STN_ST0(cpu_env, tcg_const_i32(opreg));
                gen_helper_fpop(cpu_env);
                break;
            case 0x2c: /* fucom st(i) */
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fucom_ST0_FT0(cpu_env);
                break;
            case 0x2d: /* fucomp st(i) */
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fucom_ST0_FT0(cpu_env);
                gen_helper_fpop(cpu_env);
                break;
            case 0x33: /* de/3 */
                switch(rm) {
                case 1: /* fcompp */
                    gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(1));
                    gen_helper_fcom_ST0_FT0(cpu_env);
                    gen_helper_fpop(cpu_env);
                    gen_helper_fpop(cpu_env);
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x38: /* ffreep sti, undocumented op */
                gen_helper_ffree_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fpop(cpu_env);
                break;
            case 0x3c: /* df/4 */
                switch(rm) {
                case 0:
                    gen_helper_fnstsw(cpu_tmp2_i32, cpu_env);
                    tcg_gen_extu_i32_tl(cpu_T[0], cpu_tmp2_i32);
                    gen_op_mov_reg_T0(MO_16, R_EAX);
                    break;
                default:
                    goto illegal_op;
                }
                break;
            case 0x3d: /* fucomip */
                if (!(s->cpuid_features & CPUID_CMOV)) {
                    goto illegal_op;
                }
                gen_update_cc_op(s);
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fucomi_ST0_FT0(cpu_env);
                gen_helper_fpop(cpu_env);
                set_cc_op(s, CC_OP_EFLAGS);
                break;
            case 0x3e: /* fcomip */
                if (!(s->cpuid_features & CPUID_CMOV)) {
                    goto illegal_op;
                }
                gen_update_cc_op(s);
                gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
                gen_helper_fcomi_ST0_FT0(cpu_env);
                gen_helper_fpop(cpu_env);
                set_cc_op(s, CC_OP_EFLAGS);
                break;
            case 0x10 ... 0x13: /* fcmovxx */
            case 0x18 ... 0x1b:
                {
                    int op1, l1;
                    static const uint8_t fcmov_cc[8] = {
                        (JCC_B << 1),
                        (JCC_Z << 1),
                        (JCC_BE << 1),
                        (JCC_P << 1),
                    };

                    if (!(s->cpuid_features & CPUID_CMOV)) {
                        goto illegal_op;
                    }
                    op1 = fcmov_cc[op & 3] | (((op >> 3) & 1) ^ 1);
                    l1 = gen_new_label();
                    gen_jcc1_noeob(s, op1, l1);
                    gen_helper_fmov_ST0_STN(cpu_env, tcg_const_i32(opreg));
                    gen_set_label(l1);
                }
                break;
            default:
                goto illegal_op;
            }
        }
        break;
        /************************/
        /* string ops */

    case 0xa4: /* movsS */
    case 0xa5:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;

        if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
            gen_repz_movs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
        } else {
            gen_movs(s, ot);
        }
        break;

    case 0xaa: /* stosS */
    case 0xab:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;

        if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
            gen_repz_stos(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
        } else {
            gen_stos(s, ot);
        }
        break;
    case 0xac: /* lodsS */
    case 0xad:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
            gen_repz_lods(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
        } else {
            gen_lods(s, ot);
        }
        break;
    case 0xae: /* scasS */
    case 0xaf:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        if (prefixes & PREFIX_REPNZ) {
            gen_repz_scas(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 1);
        } else if (prefixes & PREFIX_REPZ) {
            gen_repz_scas(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
        } else {
            gen_scas(s, ot);
        }
        break;

    case 0xa6: /* cmpsS */
    case 0xa7:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag + MO_16;
        if (prefixes & PREFIX_REPNZ) {
            gen_repz_cmps(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 1);
        } else if (prefixes & PREFIX_REPZ) {
            gen_repz_cmps(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
        } else {
            gen_cmps(s, ot);
        }
        break;
    case 0x6c: /* insS */
    case 0x6d:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        gen_op_mov_TN_reg(MO_16, 0, R_EDX);
        gen_op_andl_T0_ffff();
        gen_check_io(s, ot, pc_start - s->cs_base, 
                     SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) | 4);
        if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
            gen_repz_ins(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
        } else {
            gen_ins(s, ot);
            if (use_icount) {
                gen_jmp(s, s->pc - s->cs_base);
            }
        }
        break;
    case 0x6e: /* outsS */
    case 0x6f:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        gen_op_mov_TN_reg(MO_16, 0, R_EDX);
        gen_op_andl_T0_ffff();
        gen_check_io(s, ot, pc_start - s->cs_base,
                     svm_is_rep(prefixes) | 4);
        if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
            gen_repz_outs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
        } else {
            gen_outs(s, ot);
            if (use_icount) {
                gen_jmp(s, s->pc - s->cs_base);
            }
        }
        break;

        /************************/
        /* port I/O */

    case 0xe4:
    case 0xe5:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        val = cpu_ldub_code(env, s->pc++);
        gen_op_movl_T0_im(val);
        gen_check_io(s, ot, pc_start - s->cs_base,
                     SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes));
        if (use_icount)
            gen_io_start();
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        gen_helper_in_func(ot, cpu_T[1], cpu_tmp2_i32);
        gen_op_mov_reg_T1(ot, R_EAX);
        if (use_icount) {
            gen_io_end();
            gen_jmp(s, s->pc - s->cs_base);
        }
        break;
    case 0xe6:
    case 0xe7:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        val = cpu_ldub_code(env, s->pc++);
        gen_op_movl_T0_im(val);
        gen_check_io(s, ot, pc_start - s->cs_base,
                     svm_is_rep(prefixes));
        gen_op_mov_TN_reg(ot, 1, R_EAX);

        if (use_icount)
            gen_io_start();
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_T[1]);
        gen_helper_out_func(ot, cpu_tmp2_i32, cpu_tmp3_i32);
        if (use_icount) {
            gen_io_end();
            gen_jmp(s, s->pc - s->cs_base);
        }
        break;
    case 0xec:
    case 0xed:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        gen_op_mov_TN_reg(MO_16, 0, R_EDX);
        gen_op_andl_T0_ffff();
        gen_check_io(s, ot, pc_start - s->cs_base,
                     SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes));
        if (use_icount)
            gen_io_start();
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        gen_helper_in_func(ot, cpu_T[1], cpu_tmp2_i32);
        gen_op_mov_reg_T1(ot, R_EAX);
        if (use_icount) {
            gen_io_end();
            gen_jmp(s, s->pc - s->cs_base);
        }
        break;
    case 0xee:
    case 0xef:
        if ((b & 1) == 0)
            ot = MO_8;
        else
            ot = dflag ? MO_32 : MO_16;
        gen_op_mov_TN_reg(MO_16, 0, R_EDX);
        gen_op_andl_T0_ffff();
        gen_check_io(s, ot, pc_start - s->cs_base,
                     svm_is_rep(prefixes));
        gen_op_mov_TN_reg(ot, 1, R_EAX);

        if (use_icount)
            gen_io_start();
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        tcg_gen_trunc_tl_i32(cpu_tmp3_i32, cpu_T[1]);
        gen_helper_out_func(ot, cpu_tmp2_i32, cpu_tmp3_i32);
        if (use_icount) {
            gen_io_end();
            gen_jmp(s, s->pc - s->cs_base);
        }
        break;

        /************************/
        /* control */
    case 0xc2: /* ret im */
        val = cpu_ldsw_code(env, s->pc);
        s->pc += 2;
        gen_pop_T0(s);
        if (CODE64(s) && s->dflag)
            s->dflag = 2;
        gen_stack_update(s, val + (2 << s->dflag));
        if (s->dflag == 0)
            gen_op_andl_T0_ffff();
        gen_op_jmp_T0();
        gen_eob(s);
        break;
    case 0xc3: /* ret */
        gen_pop_T0(s);
        gen_pop_update(s);
        if (s->dflag == 0)
            gen_op_andl_T0_ffff();
        gen_op_jmp_T0();
        gen_eob(s);
        break;
    case 0xca: /* lret im */
        val = cpu_ldsw_code(env, s->pc);
        s->pc += 2;
    do_lret:
        if (s->pe && !s->vm86) {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_lret_protected(cpu_env, tcg_const_i32(s->dflag),
                                      tcg_const_i32(val));
        } else {
            gen_stack_A0(s);
            /* pop offset */
            gen_op_ld_v(s, 1 + s->dflag, cpu_T[0], cpu_A0);
            if (s->dflag == 0)
                gen_op_andl_T0_ffff();
            /* NOTE: keeping EIP updated is not a problem in case of
               exception */
            gen_op_jmp_T0();
            /* pop selector */
            gen_op_addl_A0_im(2 << s->dflag);
            gen_op_ld_v(s, 1 + s->dflag, cpu_T[0], cpu_A0);
            gen_op_movl_seg_T0_vm(R_CS);
            /* add stack offset */
            gen_stack_update(s, val + (4 << s->dflag));
        }
        gen_eob(s);
        break;
    case 0xcb: /* lret */
        val = 0;
        goto do_lret;
    case 0xcf: /* iret */
        gen_svm_check_intercept(s, pc_start, SVM_EXIT_IRET);
        if (!s->pe) {
            /* real mode */
            gen_helper_iret_real(cpu_env, tcg_const_i32(s->dflag));
            set_cc_op(s, CC_OP_EFLAGS);
        } else if (s->vm86) {
            if (s->iopl != 3) {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            } else {
                gen_helper_iret_real(cpu_env, tcg_const_i32(s->dflag));
                set_cc_op(s, CC_OP_EFLAGS);
            }
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_iret_protected(cpu_env, tcg_const_i32(s->dflag),
                                      tcg_const_i32(s->pc - s->cs_base));
            set_cc_op(s, CC_OP_EFLAGS);
        }
        gen_eob(s);
        break;
    case 0xe8: /* call im */
        {
            if (dflag)
                tval = (int32_t)insn_get(env, s, MO_32);
            else
                tval = (int16_t)insn_get(env, s, MO_16);
            next_eip = s->pc - s->cs_base;
            tval += next_eip;
            if (s->dflag == 0)
                tval &= 0xffff;
            else if(!CODE64(s))
                tval &= 0xffffffff;
            gen_movtl_T0_im(next_eip);
            gen_push_T0(s);
            gen_jmp(s, tval);
        }
        break;
    case 0x9a: /* lcall im */
        {
            unsigned int selector, offset;

            if (CODE64(s))
                goto illegal_op;
            ot = dflag ? MO_32 : MO_16;
            offset = insn_get(env, s, ot);
            selector = insn_get(env, s, MO_16);

            gen_op_movl_T0_im(selector);
            gen_op_movl_T1_imu(offset);
        }
        goto do_lcall;
    case 0xe9: /* jmp im */
        if (dflag)
            tval = (int32_t)insn_get(env, s, MO_32);
        else
            tval = (int16_t)insn_get(env, s, MO_16);
        tval += s->pc - s->cs_base;
        if (s->dflag == 0)
            tval &= 0xffff;
        else if(!CODE64(s))
            tval &= 0xffffffff;
        gen_jmp(s, tval);
        break;
    case 0xea: /* ljmp im */
        {
            unsigned int selector, offset;

            if (CODE64(s))
                goto illegal_op;
            ot = dflag ? MO_32 : MO_16;
            offset = insn_get(env, s, ot);
            selector = insn_get(env, s, MO_16);

            gen_op_movl_T0_im(selector);
            gen_op_movl_T1_imu(offset);
        }
        goto do_ljmp;
    case 0xeb: /* jmp Jb */
        tval = (int8_t)insn_get(env, s, MO_8);
        tval += s->pc - s->cs_base;
        if (s->dflag == 0)
            tval &= 0xffff;
        gen_jmp(s, tval);
        break;
    case 0x70 ... 0x7f: /* jcc Jb */
        tval = (int8_t)insn_get(env, s, MO_8);
        goto do_jcc;
    case 0x180 ... 0x18f: /* jcc Jv */
        if (dflag) {
            tval = (int32_t)insn_get(env, s, MO_32);
        } else {
            tval = (int16_t)insn_get(env, s, MO_16);
        }
    do_jcc:
        next_eip = s->pc - s->cs_base;
        tval += next_eip;
        if (s->dflag == 0)
            tval &= 0xffff;
        gen_jcc(s, b, tval, next_eip);
        break;

    case 0x190 ... 0x19f: /* setcc Gv */
        modrm = cpu_ldub_code(env, s->pc++);
        gen_setcc1(s, b, cpu_T[0]);
        gen_ldst_modrm(env, s, modrm, MO_8, OR_TMP0, 1);
        break;
    case 0x140 ... 0x14f: /* cmov Gv, Ev */
        if (!(s->cpuid_features & CPUID_CMOV)) {
            goto illegal_op;
        }
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        gen_cmovcc1(env, s, ot, b, modrm, reg);
        break;

        /************************/
        /* flags */
    case 0x9c: /* pushf */
        gen_svm_check_intercept(s, pc_start, SVM_EXIT_PUSHF);
        if (s->vm86 && s->iopl != 3) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_helper_read_eflags(cpu_T[0], cpu_env);
            gen_push_T0(s);
        }
        break;
    case 0x9d: /* popf */
        gen_svm_check_intercept(s, pc_start, SVM_EXIT_POPF);
        if (s->vm86 && s->iopl != 3) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_pop_T0(s);
            if (s->cpl == 0) {
                if (s->dflag) {
                    gen_helper_write_eflags(cpu_env, cpu_T[0],
                                            tcg_const_i32((TF_MASK | AC_MASK |
                                                           ID_MASK | NT_MASK |
                                                           IF_MASK |
                                                           IOPL_MASK)));
                } else {
                    gen_helper_write_eflags(cpu_env, cpu_T[0],
                                            tcg_const_i32((TF_MASK | AC_MASK |
                                                           ID_MASK | NT_MASK |
                                                           IF_MASK | IOPL_MASK)
                                                          & 0xffff));
                }
            } else {
                if (s->cpl <= s->iopl) {
                    if (s->dflag) {
                        gen_helper_write_eflags(cpu_env, cpu_T[0],
                                                tcg_const_i32((TF_MASK |
                                                               AC_MASK |
                                                               ID_MASK |
                                                               NT_MASK |
                                                               IF_MASK)));
                    } else {
                        gen_helper_write_eflags(cpu_env, cpu_T[0],
                                                tcg_const_i32((TF_MASK |
                                                               AC_MASK |
                                                               ID_MASK |
                                                               NT_MASK |
                                                               IF_MASK)
                                                              & 0xffff));
                    }
                } else {
                    if (s->dflag) {
                        gen_helper_write_eflags(cpu_env, cpu_T[0],
                                           tcg_const_i32((TF_MASK | AC_MASK |
                                                          ID_MASK | NT_MASK)));
                    } else {
                        gen_helper_write_eflags(cpu_env, cpu_T[0],
                                           tcg_const_i32((TF_MASK | AC_MASK |
                                                          ID_MASK | NT_MASK)
                                                         & 0xffff));
                    }
                }
            }
            gen_pop_update(s);
            set_cc_op(s, CC_OP_EFLAGS);
            /* abort translation because TF/AC flag may change */
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;
    case 0x9e: /* sahf */
        if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM))
            goto illegal_op;
        gen_op_mov_TN_reg(MO_8, 0, R_AH);
        gen_compute_eflags(s);
        tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, CC_O);
        tcg_gen_andi_tl(cpu_T[0], cpu_T[0], CC_S | CC_Z | CC_A | CC_P | CC_C);
        tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, cpu_T[0]);
        break;
    case 0x9f: /* lahf */
        if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM))
            goto illegal_op;
        gen_compute_eflags(s);
        /* Note: gen_compute_eflags() only gives the condition codes */
        tcg_gen_ori_tl(cpu_T[0], cpu_cc_src, 0x02);
        gen_op_mov_reg_T0(MO_8, R_AH);
        break;
    case 0xf5: /* cmc */
        gen_compute_eflags(s);
        tcg_gen_xori_tl(cpu_cc_src, cpu_cc_src, CC_C);
        break;
    case 0xf8: /* clc */
        gen_compute_eflags(s);
        tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_C);
        break;
    case 0xf9: /* stc */
        gen_compute_eflags(s);
        tcg_gen_ori_tl(cpu_cc_src, cpu_cc_src, CC_C);
        break;
    case 0xfc: /* cld */
        tcg_gen_movi_i32(cpu_tmp2_i32, 1);
        tcg_gen_st_i32(cpu_tmp2_i32, cpu_env, offsetof(CPUX86State, df));
        break;
    case 0xfd: /* std */
        tcg_gen_movi_i32(cpu_tmp2_i32, -1);
        tcg_gen_st_i32(cpu_tmp2_i32, cpu_env, offsetof(CPUX86State, df));
        break;

        /************************/
        /* bit operations */
    case 0x1ba: /* bt/bts/btr/btc Gv, im */
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        op = (modrm >> 3) & 7;
        mod = (modrm >> 6) & 3;
        rm = (modrm & 7) | REX_B(s);
        if (mod != 3) {
            s->rip_offset = 1;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
        } else {
            gen_op_mov_TN_reg(ot, 0, rm);
        }
        /* load shift */
        val = cpu_ldub_code(env, s->pc++);
        gen_op_movl_T1_im(val);
        if (op < 4)
            goto illegal_op;
        op -= 4;
        goto bt_op;
    case 0x1a3: /* bt Gv, Ev */
        op = 0;
        goto do_btx;
    case 0x1ab: /* bts */
        op = 1;
        goto do_btx;
    case 0x1b3: /* btr */
        op = 2;
        goto do_btx;
    case 0x1bb: /* btc */
        op = 3;
    do_btx:
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        mod = (modrm >> 6) & 3;
        rm = (modrm & 7) | REX_B(s);
        gen_op_mov_TN_reg(MO_32, 1, reg);
        if (mod != 3) {
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            /* specific case: we need to add a displacement */
            gen_exts(ot, cpu_T[1]);
            tcg_gen_sari_tl(cpu_tmp0, cpu_T[1], 3 + ot);
            tcg_gen_shli_tl(cpu_tmp0, cpu_tmp0, ot);
            tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0);
            gen_op_ld_v(s, ot, cpu_T[0], cpu_A0);
        } else {
            gen_op_mov_TN_reg(ot, 0, rm);
        }
    bt_op:
        tcg_gen_andi_tl(cpu_T[1], cpu_T[1], (1 << (3 + ot)) - 1);
        switch(op) {
        case 0:
            tcg_gen_shr_tl(cpu_cc_src, cpu_T[0], cpu_T[1]);
            tcg_gen_movi_tl(cpu_cc_dst, 0);
            break;
        case 1:
            tcg_gen_shr_tl(cpu_tmp4, cpu_T[0], cpu_T[1]);
            tcg_gen_movi_tl(cpu_tmp0, 1);
            tcg_gen_shl_tl(cpu_tmp0, cpu_tmp0, cpu_T[1]);
            tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_tmp0);
            break;
        case 2:
            tcg_gen_shr_tl(cpu_tmp4, cpu_T[0], cpu_T[1]);
            tcg_gen_movi_tl(cpu_tmp0, 1);
            tcg_gen_shl_tl(cpu_tmp0, cpu_tmp0, cpu_T[1]);
            tcg_gen_not_tl(cpu_tmp0, cpu_tmp0);
            tcg_gen_and_tl(cpu_T[0], cpu_T[0], cpu_tmp0);
            break;
        default:
        case 3:
            tcg_gen_shr_tl(cpu_tmp4, cpu_T[0], cpu_T[1]);
            tcg_gen_movi_tl(cpu_tmp0, 1);
            tcg_gen_shl_tl(cpu_tmp0, cpu_tmp0, cpu_T[1]);
            tcg_gen_xor_tl(cpu_T[0], cpu_T[0], cpu_tmp0);
            break;
        }
        set_cc_op(s, CC_OP_SARB + ot);
        if (op != 0) {
            if (mod != 3)
                gen_op_st_T0_A0(s, ot);
            else
                gen_op_mov_reg_T0(ot, rm);
            tcg_gen_mov_tl(cpu_cc_src, cpu_tmp4);
            tcg_gen_movi_tl(cpu_cc_dst, 0);
        }
        break;
    case 0x1bc: /* bsf / tzcnt */
    case 0x1bd: /* bsr / lzcnt */
        ot = dflag + MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;
        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
        gen_extu(ot, cpu_T[0]);

        /* Note that lzcnt and tzcnt are in different extensions.  */
        if ((prefixes & PREFIX_REPZ)
            && (b & 1
                ? s->cpuid_ext3_features & CPUID_EXT3_ABM
                : s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1)) {
            int size = 8 << ot;
            tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
            if (b & 1) {
                /* For lzcnt, reduce the target_ulong result by the
                   number of zeros that we expect to find at the top.  */
                gen_helper_clz(cpu_T[0], cpu_T[0]);
                tcg_gen_subi_tl(cpu_T[0], cpu_T[0], TARGET_LONG_BITS - size);
            } else {
                /* For tzcnt, a zero input must return the operand size:
                   force all bits outside the operand size to 1.  */
                target_ulong mask = (target_ulong)-2 << (size - 1);
                tcg_gen_ori_tl(cpu_T[0], cpu_T[0], mask);
                gen_helper_ctz(cpu_T[0], cpu_T[0]);
            }
            /* For lzcnt/tzcnt, C and Z bits are defined and are
               related to the result.  */
            gen_op_update1_cc();
            set_cc_op(s, CC_OP_BMILGB + ot);
        } else {
            /* For bsr/bsf, only the Z bit is defined and it is related
               to the input and not the result.  */
            tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
            set_cc_op(s, CC_OP_LOGICB + ot);
            if (b & 1) {
                /* For bsr, return the bit index of the first 1 bit,
                   not the count of leading zeros.  */
                gen_helper_clz(cpu_T[0], cpu_T[0]);
                tcg_gen_xori_tl(cpu_T[0], cpu_T[0], TARGET_LONG_BITS - 1);
            } else {
                gen_helper_ctz(cpu_T[0], cpu_T[0]);
            }
            /* ??? The manual says that the output is undefined when the
               input is zero, but real hardware leaves it unchanged, and
               real programs appear to depend on that.  */
            tcg_gen_movi_tl(cpu_tmp0, 0);
            tcg_gen_movcond_tl(TCG_COND_EQ, cpu_T[0], cpu_cc_dst, cpu_tmp0,
                               cpu_regs[reg], cpu_T[0]);
        }
        gen_op_mov_reg_T0(ot, reg);
        break;
        /************************/
        /* bcd */
    case 0x27: /* daa */
        if (CODE64(s))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_helper_daa(cpu_env);
        set_cc_op(s, CC_OP_EFLAGS);
        break;
    case 0x2f: /* das */
        if (CODE64(s))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_helper_das(cpu_env);
        set_cc_op(s, CC_OP_EFLAGS);
        break;
    case 0x37: /* aaa */
        if (CODE64(s))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_helper_aaa(cpu_env);
        set_cc_op(s, CC_OP_EFLAGS);
        break;
    case 0x3f: /* aas */
        if (CODE64(s))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_helper_aas(cpu_env);
        set_cc_op(s, CC_OP_EFLAGS);
        break;
    case 0xd4: /* aam */
        if (CODE64(s))
            goto illegal_op;
        val = cpu_ldub_code(env, s->pc++);
        if (val == 0) {
            gen_exception(s, EXCP00_DIVZ, pc_start - s->cs_base);
        } else {
            gen_helper_aam(cpu_env, tcg_const_i32(val));
            set_cc_op(s, CC_OP_LOGICB);
        }
        break;
    case 0xd5: /* aad */
        if (CODE64(s))
            goto illegal_op;
        val = cpu_ldub_code(env, s->pc++);
        gen_helper_aad(cpu_env, tcg_const_i32(val));
        set_cc_op(s, CC_OP_LOGICB);
        break;
        /************************/
        /* misc */
    case 0x90: /* nop */
        /* XXX: correct lock test for all insn */
        if (prefixes & PREFIX_LOCK) {
            goto illegal_op;
        }
        /* If REX_B is set, then this is xchg eax, r8d, not a nop.  */
        if (REX_B(s)) {
            goto do_xchg_reg_eax;
        }
        if (prefixes & PREFIX_REPZ) {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_pause(cpu_env, tcg_const_i32(s->pc - pc_start));
            s->is_jmp = DISAS_TB_JUMP;
        }
        break;
    case 0x9b: /* fwait */
        if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
            (HF_MP_MASK | HF_TS_MASK)) {
            gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_fwait(cpu_env);
        }
        break;
    case 0xcc: /* int3 */
        gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base);
        break;
    case 0xcd: /* int N */
        val = cpu_ldub_code(env, s->pc++);
        if (s->vm86 && s->iopl != 3) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_interrupt(s, val, pc_start - s->cs_base, s->pc - s->cs_base);
        }
        break;
    case 0xce: /* into */
        if (CODE64(s))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_jmp_im(pc_start - s->cs_base);
        gen_helper_into(cpu_env, tcg_const_i32(s->pc - pc_start));
        break;
#ifdef WANT_ICEBP
    case 0xf1: /* icebp (undocumented, exits to external debugger) */
        gen_svm_check_intercept(s, pc_start, SVM_EXIT_ICEBP);
#if 1
        gen_debug(s, pc_start - s->cs_base);
#else
        /* start debug */
        tb_flush(env);
        qemu_set_log(CPU_LOG_INT | CPU_LOG_TB_IN_ASM);
#endif
        break;
#endif
    case 0xfa: /* cli */
        if (!s->vm86) {
            if (s->cpl <= s->iopl) {
                gen_helper_cli(cpu_env);
            } else {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            }
        } else {
            if (s->iopl == 3) {
                gen_helper_cli(cpu_env);
            } else {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            }
        }
        break;
    case 0xfb: /* sti */
        if (!s->vm86) {
            if (s->cpl <= s->iopl) {
            gen_sti:
                gen_helper_sti(cpu_env);
                /* interruptions are enabled only the first insn after sti */
                /* If several instructions disable interrupts, only the
                   _first_ does it */
                if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
                    gen_helper_set_inhibit_irq(cpu_env);
                /* give a chance to handle pending irqs */
                gen_jmp_im(s->pc - s->cs_base);
                gen_eob(s);
            } else {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            }
        } else {
            if (s->iopl == 3) {
                goto gen_sti;
            } else {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            }
        }
        break;
    case 0x62: /* bound */
        if (CODE64(s))
            goto illegal_op;
        ot = dflag ? MO_32 : MO_16;
        modrm = cpu_ldub_code(env, s->pc++);
        reg = (modrm >> 3) & 7;
        mod = (modrm >> 6) & 3;
        if (mod == 3)
            goto illegal_op;
        gen_op_mov_TN_reg(ot, 0, reg);
        gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
        gen_jmp_im(pc_start - s->cs_base);
        tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
        if (ot == MO_16) {
            gen_helper_boundw(cpu_env, cpu_A0, cpu_tmp2_i32);
        } else {
            gen_helper_boundl(cpu_env, cpu_A0, cpu_tmp2_i32);
        }
        break;
    case 0x1c8 ... 0x1cf: /* bswap reg */
        reg = (b & 7) | REX_B(s);
#ifdef TARGET_X86_64
        if (dflag == 2) {
            gen_op_mov_TN_reg(MO_64, 0, reg);
            tcg_gen_bswap64_i64(cpu_T[0], cpu_T[0]);
            gen_op_mov_reg_T0(MO_64, reg);
        } else
#endif
        {
            gen_op_mov_TN_reg(MO_32, 0, reg);
            tcg_gen_ext32u_tl(cpu_T[0], cpu_T[0]);
            tcg_gen_bswap32_tl(cpu_T[0], cpu_T[0]);
            gen_op_mov_reg_T0(MO_32, reg);
        }
        break;
    case 0xd6: /* salc */
        if (CODE64(s))
            goto illegal_op;
        gen_compute_eflags_c(s, cpu_T[0]);
        tcg_gen_neg_tl(cpu_T[0], cpu_T[0]);
        gen_op_mov_reg_T0(MO_8, R_EAX);
        break;
    case 0xe0: /* loopnz */
    case 0xe1: /* loopz */
    case 0xe2: /* loop */
    case 0xe3: /* jecxz */
        {
            int l1, l2, l3;

            tval = (int8_t)insn_get(env, s, MO_8);
            next_eip = s->pc - s->cs_base;
            tval += next_eip;
            if (s->dflag == 0)
                tval &= 0xffff;

            l1 = gen_new_label();
            l2 = gen_new_label();
            l3 = gen_new_label();
            b &= 3;
            switch(b) {
            case 0: /* loopnz */
            case 1: /* loopz */
                gen_op_add_reg_im(s->aflag, R_ECX, -1);
                gen_op_jz_ecx(s->aflag, l3);
                gen_jcc1(s, (JCC_Z << 1) | (b ^ 1), l1);
                break;
            case 2: /* loop */
                gen_op_add_reg_im(s->aflag, R_ECX, -1);
                gen_op_jnz_ecx(s->aflag, l1);
                break;
            default:
            case 3: /* jcxz */
                gen_op_jz_ecx(s->aflag, l1);
                break;
            }

            gen_set_label(l3);
            gen_jmp_im(next_eip);
            tcg_gen_br(l2);

            gen_set_label(l1);
            gen_jmp_im(tval);
            gen_set_label(l2);
            gen_eob(s);
        }
        break;
    case 0x130: /* wrmsr */
    case 0x132: /* rdmsr */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            if (b & 2) {
                gen_helper_rdmsr(cpu_env);
            } else {
                gen_helper_wrmsr(cpu_env);
            }
        }
        break;
    case 0x131: /* rdtsc */
        gen_update_cc_op(s);
        gen_jmp_im(pc_start - s->cs_base);
        if (use_icount)
            gen_io_start();
        gen_helper_rdtsc(cpu_env);
        if (use_icount) {
            gen_io_end();
            gen_jmp(s, s->pc - s->cs_base);
        }
        break;
    case 0x133: /* rdpmc */
        gen_update_cc_op(s);
        gen_jmp_im(pc_start - s->cs_base);
        gen_helper_rdpmc(cpu_env);
        break;
    case 0x134: /* sysenter */
        /* For Intel SYSENTER is valid on 64-bit */
        if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
            goto illegal_op;
        if (!s->pe) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_sysenter(cpu_env);
            gen_eob(s);
        }
        break;
    case 0x135: /* sysexit */
        /* For Intel SYSEXIT is valid on 64-bit */
        if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
            goto illegal_op;
        if (!s->pe) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_sysexit(cpu_env, tcg_const_i32(dflag));
            gen_eob(s);
        }
        break;
#ifdef TARGET_X86_64
    case 0x105: /* syscall */
        /* XXX: is it usable in real mode ? */
        gen_update_cc_op(s);
        gen_jmp_im(pc_start - s->cs_base);
        gen_helper_syscall(cpu_env, tcg_const_i32(s->pc - pc_start));
        gen_eob(s);
        break;
    case 0x107: /* sysret */
        if (!s->pe) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_sysret(cpu_env, tcg_const_i32(s->dflag));
            /* condition codes are modified only in long mode */
            if (s->lma) {
                set_cc_op(s, CC_OP_EFLAGS);
            }
            gen_eob(s);
        }
        break;
#endif
    case 0x1a2: /* cpuid */
        gen_update_cc_op(s);
        gen_jmp_im(pc_start - s->cs_base);
        gen_helper_cpuid(cpu_env);
        break;
    case 0xf4: /* hlt */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_hlt(cpu_env, tcg_const_i32(s->pc - pc_start));
            s->is_jmp = DISAS_TB_JUMP;
        }
        break;
    case 0x100:
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        op = (modrm >> 3) & 7;
        switch(op) {
        case 0: /* sldt */
            if (!s->pe || s->vm86)
                goto illegal_op;
            gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_READ);
            tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,ldt.selector));
            ot = MO_16;
            if (mod == 3)
                ot += s->dflag;
            gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
            break;
        case 2: /* lldt */
            if (!s->pe || s->vm86)
                goto illegal_op;
            if (s->cpl != 0) {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            } else {
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_WRITE);
                gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
                gen_jmp_im(pc_start - s->cs_base);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_lldt(cpu_env, cpu_tmp2_i32);
            }
            break;
        case 1: /* str */
            if (!s->pe || s->vm86)
                goto illegal_op;
            gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_READ);
            tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,tr.selector));
            ot = MO_16;
            if (mod == 3)
                ot += s->dflag;
            gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
            break;
        case 3: /* ltr */
            if (!s->pe || s->vm86)
                goto illegal_op;
            if (s->cpl != 0) {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            } else {
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_WRITE);
                gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
                gen_jmp_im(pc_start - s->cs_base);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_ltr(cpu_env, cpu_tmp2_i32);
            }
            break;
        case 4: /* verr */
        case 5: /* verw */
            if (!s->pe || s->vm86)
                goto illegal_op;
            gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
            gen_update_cc_op(s);
            if (op == 4) {
                gen_helper_verr(cpu_env, cpu_T[0]);
            } else {
                gen_helper_verw(cpu_env, cpu_T[0]);
            }
            set_cc_op(s, CC_OP_EFLAGS);
            break;
        default:
            goto illegal_op;
        }
        break;
    case 0x101:
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        op = (modrm >> 3) & 7;
        rm = modrm & 7;
        switch(op) {
        case 0: /* sgdt */
            if (mod == 3)
                goto illegal_op;
            gen_svm_check_intercept(s, pc_start, SVM_EXIT_GDTR_READ);
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, gdt.limit));
            gen_op_st_T0_A0(s, MO_16);
            gen_add_A0_im(s, 2);
            tcg_gen_ld_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, gdt.base));
            if (!s->dflag)
                gen_op_andl_T0_im(0xffffff);
            gen_op_st_T0_A0(s, CODE64(s) + MO_32);
            break;
        case 1:
            if (mod == 3) {
                switch (rm) {
                case 0: /* monitor */
                    if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) ||
                        s->cpl != 0)
                        goto illegal_op;
                    gen_update_cc_op(s);
                    gen_jmp_im(pc_start - s->cs_base);
#ifdef TARGET_X86_64
                    if (s->aflag == 2) {
                        gen_op_movq_A0_reg(R_EAX);
                    } else
#endif
                    {
                        gen_op_movl_A0_reg(R_EAX);
                        if (s->aflag == 0)
                            gen_op_andl_A0_ffff();
                    }
                    gen_add_A0_ds_seg(s);
                    gen_helper_monitor(cpu_env, cpu_A0);
                    break;
                case 1: /* mwait */
                    if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) ||
                        s->cpl != 0)
                        goto illegal_op;
                    gen_update_cc_op(s);
                    gen_jmp_im(pc_start - s->cs_base);
                    gen_helper_mwait(cpu_env, tcg_const_i32(s->pc - pc_start));
                    gen_eob(s);
                    break;
                case 2: /* clac */
                    if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP) ||
                        s->cpl != 0) {
                        goto illegal_op;
                    }
                    gen_helper_clac(cpu_env);
                    gen_jmp_im(s->pc - s->cs_base);
                    gen_eob(s);
                    break;
                case 3: /* stac */
                    if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP) ||
                        s->cpl != 0) {
                        goto illegal_op;
                    }
                    gen_helper_stac(cpu_env);
                    gen_jmp_im(s->pc - s->cs_base);
                    gen_eob(s);
                    break;
                default:
                    goto illegal_op;
                }
            } else { /* sidt */
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_IDTR_READ);
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, idt.limit));
                gen_op_st_T0_A0(s, MO_16);
                gen_add_A0_im(s, 2);
                tcg_gen_ld_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, idt.base));
                if (!s->dflag)
                    gen_op_andl_T0_im(0xffffff);
                gen_op_st_T0_A0(s, CODE64(s) + MO_32);
            }
            break;
        case 2: /* lgdt */
        case 3: /* lidt */
            if (mod == 3) {
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                switch(rm) {
                case 0: /* VMRUN */
                    if (!(s->flags & HF_SVME_MASK) || !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag),
                                         tcg_const_i32(s->pc - pc_start));
                        tcg_gen_exit_tb(0);
                        s->is_jmp = DISAS_TB_JUMP;
                    }
                    break;
                case 1: /* VMMCALL */
                    if (!(s->flags & HF_SVME_MASK))
                        goto illegal_op;
                    gen_helper_vmmcall(cpu_env);
                    break;
                case 2: /* VMLOAD */
                    if (!(s->flags & HF_SVME_MASK) || !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag));
                    }
                    break;
                case 3: /* VMSAVE */
                    if (!(s->flags & HF_SVME_MASK) || !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag));
                    }
                    break;
                case 4: /* STGI */
                    if ((!(s->flags & HF_SVME_MASK) &&
                         !(s->cpuid_ext3_features & CPUID_EXT3_SKINIT)) || 
                        !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_stgi(cpu_env);
                    }
                    break;
                case 5: /* CLGI */
                    if (!(s->flags & HF_SVME_MASK) || !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_clgi(cpu_env);
                    }
                    break;
                case 6: /* SKINIT */
                    if ((!(s->flags & HF_SVME_MASK) && 
                         !(s->cpuid_ext3_features & CPUID_EXT3_SKINIT)) || 
                        !s->pe)
                        goto illegal_op;
                    gen_helper_skinit(cpu_env);
                    break;
                case 7: /* INVLPGA */
                    if (!(s->flags & HF_SVME_MASK) || !s->pe)
                        goto illegal_op;
                    if (s->cpl != 0) {
                        gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        break;
                    } else {
                        gen_helper_invlpga(cpu_env, tcg_const_i32(s->aflag));
                    }
                    break;
                default:
                    goto illegal_op;
                }
            } else if (s->cpl != 0) {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            } else {
                gen_svm_check_intercept(s, pc_start,
                                        op==2 ? SVM_EXIT_GDTR_WRITE : SVM_EXIT_IDTR_WRITE);
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_op_ld_T1_A0(s, MO_16);
                gen_add_A0_im(s, 2);
                gen_op_ld_v(s, CODE64(s) + MO_32, cpu_T[0], cpu_A0);
                if (!s->dflag)
                    gen_op_andl_T0_im(0xffffff);
                if (op == 2) {
                    tcg_gen_st_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,gdt.base));
                    tcg_gen_st32_tl(cpu_T[1], cpu_env, offsetof(CPUX86State,gdt.limit));
                } else {
                    tcg_gen_st_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,idt.base));
                    tcg_gen_st32_tl(cpu_T[1], cpu_env, offsetof(CPUX86State,idt.limit));
                }
            }
            break;
        case 4: /* smsw */
            gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0);
#if defined TARGET_X86_64 && defined HOST_WORDS_BIGENDIAN
            tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,cr[0]) + 4);
#else
            tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,cr[0]));
#endif
            gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 1);
            break;
        case 6: /* lmsw */
            if (s->cpl != 0) {
                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
            } else {
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
                gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
                gen_helper_lmsw(cpu_env, cpu_T[0]);
                gen_jmp_im(s->pc - s->cs_base);
                gen_eob(s);
            }
            break;
        case 7:
            if (mod != 3) { /* invlpg */
                if (s->cpl != 0) {
                    gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                } else {
                    gen_update_cc_op(s);
                    gen_jmp_im(pc_start - s->cs_base);
                    gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                    gen_helper_invlpg(cpu_env, cpu_A0);
                    gen_jmp_im(s->pc - s->cs_base);
                    gen_eob(s);
                }
            } else {
                switch (rm) {
                case 0: /* swapgs */
#ifdef TARGET_X86_64
                    if (CODE64(s)) {
                        if (s->cpl != 0) {
                            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
                        } else {
                            tcg_gen_ld_tl(cpu_T[0], cpu_env,
                                offsetof(CPUX86State,segs[R_GS].base));
                            tcg_gen_ld_tl(cpu_T[1], cpu_env,
                                offsetof(CPUX86State,kernelgsbase));
                            tcg_gen_st_tl(cpu_T[1], cpu_env,
                                offsetof(CPUX86State,segs[R_GS].base));
                            tcg_gen_st_tl(cpu_T[0], cpu_env,
                                offsetof(CPUX86State,kernelgsbase));
                        }
                    } else
#endif
                    {
                        goto illegal_op;
                    }
                    break;
                case 1: /* rdtscp */
                    if (!(s->cpuid_ext2_features & CPUID_EXT2_RDTSCP))
                        goto illegal_op;
                    gen_update_cc_op(s);
                    gen_jmp_im(pc_start - s->cs_base);
                    if (use_icount)
                        gen_io_start();
                    gen_helper_rdtscp(cpu_env);
                    if (use_icount) {
                        gen_io_end();
                        gen_jmp(s, s->pc - s->cs_base);
                    }
                    break;
                default:
                    goto illegal_op;
                }
            }
            break;
        default:
            goto illegal_op;
        }
        break;
    case 0x108: /* invd */
    case 0x109: /* wbinvd */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_svm_check_intercept(s, pc_start, (b & 2) ? SVM_EXIT_INVD : SVM_EXIT_WBINVD);
            /* nothing to do */
        }
        break;
    case 0x63: /* arpl or movslS (x86_64) */
#ifdef TARGET_X86_64
        if (CODE64(s)) {
            int d_ot;
            /* d_ot is the size of destination */
            d_ot = dflag + MO_16;

            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;
            mod = (modrm >> 6) & 3;
            rm = (modrm & 7) | REX_B(s);

            if (mod == 3) {
                gen_op_mov_TN_reg(MO_32, 0, rm);
                /* sign extend */
                if (d_ot == MO_64) {
                    tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
                }
                gen_op_mov_reg_T0(d_ot, reg);
            } else {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                if (d_ot == MO_64) {
                    gen_op_lds_T0_A0(s, MO_32);
                } else {
                    gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                }
                gen_op_mov_reg_T0(d_ot, reg);
            }
        } else
#endif
        {
            int label1;
            TCGv t0, t1, t2, a0;

            if (!s->pe || s->vm86)
                goto illegal_op;
            t0 = tcg_temp_local_new();
            t1 = tcg_temp_local_new();
            t2 = tcg_temp_local_new();
            ot = MO_16;
            modrm = cpu_ldub_code(env, s->pc++);
            reg = (modrm >> 3) & 7;
            mod = (modrm >> 6) & 3;
            rm = modrm & 7;
            if (mod != 3) {
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
                gen_op_ld_v(s, ot, t0, cpu_A0);
                a0 = tcg_temp_local_new();
                tcg_gen_mov_tl(a0, cpu_A0);
            } else {
                gen_op_mov_v_reg(ot, t0, rm);
                TCGV_UNUSED(a0);
            }
            gen_op_mov_v_reg(ot, t1, reg);
            tcg_gen_andi_tl(cpu_tmp0, t0, 3);
            tcg_gen_andi_tl(t1, t1, 3);
            tcg_gen_movi_tl(t2, 0);
            label1 = gen_new_label();
            tcg_gen_brcond_tl(TCG_COND_GE, cpu_tmp0, t1, label1);
            tcg_gen_andi_tl(t0, t0, ~3);
            tcg_gen_or_tl(t0, t0, t1);
            tcg_gen_movi_tl(t2, CC_Z);
            gen_set_label(label1);
            if (mod != 3) {
                gen_op_st_v(s, ot, t0, a0);
                tcg_temp_free(a0);
           } else {
                gen_op_mov_reg_v(ot, rm, t0);
            }
            gen_compute_eflags(s);
            tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_Z);
            tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, t2);
            tcg_temp_free(t0);
            tcg_temp_free(t1);
            tcg_temp_free(t2);
        }
        break;
    case 0x102: /* lar */
    case 0x103: /* lsl */
        {
            int label1;
            TCGv t0;
            if (!s->pe || s->vm86)
                goto illegal_op;
            ot = dflag ? MO_32 : MO_16;
            modrm = cpu_ldub_code(env, s->pc++);
            reg = ((modrm >> 3) & 7) | rex_r;
            gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
            t0 = tcg_temp_local_new();
            gen_update_cc_op(s);
            if (b == 0x102) {
                gen_helper_lar(t0, cpu_env, cpu_T[0]);
            } else {
                gen_helper_lsl(t0, cpu_env, cpu_T[0]);
            }
            tcg_gen_andi_tl(cpu_tmp0, cpu_cc_src, CC_Z);
            label1 = gen_new_label();
            tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_tmp0, 0, label1);
            gen_op_mov_reg_v(ot, reg, t0);
            gen_set_label(label1);
            set_cc_op(s, CC_OP_EFLAGS);
            tcg_temp_free(t0);
        }
        break;
    case 0x118:
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        op = (modrm >> 3) & 7;
        switch(op) {
        case 0: /* prefetchnta */
        case 1: /* prefetchnt0 */
        case 2: /* prefetchnt0 */
        case 3: /* prefetchnt0 */
            if (mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            /* nothing more to do */
            break;
        default: /* nop (multi byte) */
            gen_nop_modrm(env, s, modrm);
            break;
        }
        break;
    case 0x119 ... 0x11f: /* nop (multi byte) */
        modrm = cpu_ldub_code(env, s->pc++);
        gen_nop_modrm(env, s, modrm);
        break;
    case 0x120: /* mov reg, crN */
    case 0x122: /* mov crN, reg */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            modrm = cpu_ldub_code(env, s->pc++);
            /* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
             * AMD documentation (24594.pdf) and testing of
             * intel 386 and 486 processors all show that the mod bits
             * are assumed to be 1's, regardless of actual values.
             */
            rm = (modrm & 7) | REX_B(s);
            reg = ((modrm >> 3) & 7) | rex_r;
            if (CODE64(s))
                ot = MO_64;
            else
                ot = MO_32;
            if ((prefixes & PREFIX_LOCK) && (reg == 0) &&
                (s->cpuid_ext3_features & CPUID_EXT3_CR8LEG)) {
                reg = 8;
            }
            switch(reg) {
            case 0:
            case 2:
            case 3:
            case 4:
            case 8:
                gen_update_cc_op(s);
                gen_jmp_im(pc_start - s->cs_base);
                if (b & 2) {
                    gen_op_mov_TN_reg(ot, 0, rm);
                    gen_helper_write_crN(cpu_env, tcg_const_i32(reg),
                                         cpu_T[0]);
                    gen_jmp_im(s->pc - s->cs_base);
                    gen_eob(s);
                } else {
                    gen_helper_read_crN(cpu_T[0], cpu_env, tcg_const_i32(reg));
                    gen_op_mov_reg_T0(ot, rm);
                }
                break;
            default:
                goto illegal_op;
            }
        }
        break;
    case 0x121: /* mov reg, drN */
    case 0x123: /* mov drN, reg */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            modrm = cpu_ldub_code(env, s->pc++);
            /* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
             * AMD documentation (24594.pdf) and testing of
             * intel 386 and 486 processors all show that the mod bits
             * are assumed to be 1's, regardless of actual values.
             */
            rm = (modrm & 7) | REX_B(s);
            reg = ((modrm >> 3) & 7) | rex_r;
            if (CODE64(s))
                ot = MO_64;
            else
                ot = MO_32;
            /* XXX: do it dynamically with CR4.DE bit */
            if (reg == 4 || reg == 5 || reg >= 8)
                goto illegal_op;
            if (b & 2) {
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_DR0 + reg);
                gen_op_mov_TN_reg(ot, 0, rm);
                gen_helper_movl_drN_T0(cpu_env, tcg_const_i32(reg), cpu_T[0]);
                gen_jmp_im(s->pc - s->cs_base);
                gen_eob(s);
            } else {
                gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_DR0 + reg);
                tcg_gen_ld_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,dr[reg]));
                gen_op_mov_reg_T0(ot, rm);
            }
        }
        break;
    case 0x106: /* clts */
        if (s->cpl != 0) {
            gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
        } else {
            gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
            gen_helper_clts(cpu_env);
            /* abort block because static cpu state changed */
            gen_jmp_im(s->pc - s->cs_base);
            gen_eob(s);
        }
        break;
    /* MMX/3DNow!/SSE/SSE2/SSE3/SSSE3/SSE4 support */
    case 0x1c3: /* MOVNTI reg, mem */
        if (!(s->cpuid_features & CPUID_SSE2))
            goto illegal_op;
        ot = s->dflag == 2 ? MO_64 : MO_32;
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        if (mod == 3)
            goto illegal_op;
        reg = ((modrm >> 3) & 7) | rex_r;
        /* generate a generic store */
        gen_ldst_modrm(env, s, modrm, ot, reg, 1);
        break;
    case 0x1ae:
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        op = (modrm >> 3) & 7;
        switch(op) {
        case 0: /* fxsave */
            if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) ||
                (s->prefix & PREFIX_LOCK))
                goto illegal_op;
            if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
                gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
                break;
            }
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_fxsave(cpu_env, cpu_A0, tcg_const_i32((s->dflag == 2)));
            break;
        case 1: /* fxrstor */
            if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) ||
                (s->prefix & PREFIX_LOCK))
                goto illegal_op;
            if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
                gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
                break;
            }
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            gen_update_cc_op(s);
            gen_jmp_im(pc_start - s->cs_base);
            gen_helper_fxrstor(cpu_env, cpu_A0,
                               tcg_const_i32((s->dflag == 2)));
            break;
        case 2: /* ldmxcsr */
        case 3: /* stmxcsr */
            if (s->flags & HF_TS_MASK) {
                gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
                break;
            }
            if ((s->flags & HF_EM_MASK) || !(s->flags & HF_OSFXSR_MASK) ||
                mod == 3)
                goto illegal_op;
            gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            if (op == 2) {
                gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
                tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
                gen_helper_ldmxcsr(cpu_env, cpu_tmp2_i32);
            } else {
                tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, mxcsr));
                gen_op_st_T0_A0(s, MO_32);
            }
            break;
        case 5: /* lfence */
        case 6: /* mfence */
            if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2))
                goto illegal_op;
            break;
        case 7: /* sfence / clflush */
            if ((modrm & 0xc7) == 0xc0) {
                /* sfence */
                /* XXX: also check for cpuid_ext2_features & CPUID_EXT2_EMMX */
                if (!(s->cpuid_features & CPUID_SSE))
                    goto illegal_op;
            } else {
                /* clflush */
                if (!(s->cpuid_features & CPUID_CLFLUSH))
                    goto illegal_op;
                gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
            }
            break;
        default:
            goto illegal_op;
        }
        break;
    case 0x10d: /* 3DNow! prefetch(w) */
        modrm = cpu_ldub_code(env, s->pc++);
        mod = (modrm >> 6) & 3;
        if (mod == 3)
            goto illegal_op;
        gen_lea_modrm(env, s, modrm, &reg_addr, &offset_addr);
        /* ignore for now */
        break;
    case 0x1aa: /* rsm */
        gen_svm_check_intercept(s, pc_start, SVM_EXIT_RSM);
        if (!(s->flags & HF_SMM_MASK))
            goto illegal_op;
        gen_update_cc_op(s);
        gen_jmp_im(s->pc - s->cs_base);
        gen_helper_rsm(cpu_env);
        gen_eob(s);
        break;
    case 0x1b8: /* SSE4.2 popcnt */
        if ((prefixes & (PREFIX_REPZ | PREFIX_LOCK | PREFIX_REPNZ)) !=
             PREFIX_REPZ)
            goto illegal_op;
        if (!(s->cpuid_ext_features & CPUID_EXT_POPCNT))
            goto illegal_op;

        modrm = cpu_ldub_code(env, s->pc++);
        reg = ((modrm >> 3) & 7) | rex_r;

        if (s->prefix & PREFIX_DATA)
            ot = MO_16;
        else if (s->dflag != 2)
            ot = MO_32;
        else
            ot = MO_64;

        gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
        gen_helper_popcnt(cpu_T[0], cpu_env, cpu_T[0], tcg_const_i32(ot));
        gen_op_mov_reg_T0(ot, reg);

        set_cc_op(s, CC_OP_EFLAGS);
        break;
    case 0x10e ... 0x10f:
        /* 3DNow! instructions, ignore prefixes */
        s->prefix &= ~(PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA);
    case 0x110 ... 0x117:
    case 0x128 ... 0x12f:
    case 0x138 ... 0x13a:
    case 0x150 ... 0x179:
    case 0x17c ... 0x17f:
    case 0x1c2:
    case 0x1c4 ... 0x1c6:
    case 0x1d0 ... 0x1fe:
        gen_sse(env, s, b, pc_start, rex_r);
        break;
    default:
        goto illegal_op;
    }
    /* lock generation */
    if (s->prefix & PREFIX_LOCK)
        gen_helper_unlock();
    return s->pc;
 illegal_op:
    if (s->prefix & PREFIX_LOCK)
        gen_helper_unlock();
    /* XXX: ensure that no lock was generated */
    gen_exception(s, EXCP06_ILLOP, pc_start - s->cs_base);
    return s->pc;
}

void optimize_flags_init(void)
{
    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
    cpu_cc_op = tcg_global_mem_new_i32(TCG_AREG0,
                                       offsetof(CPUX86State, cc_op), "cc_op");
    cpu_cc_dst = tcg_global_mem_new(TCG_AREG0, offsetof(CPUX86State, cc_dst),
                                    "cc_dst");
    cpu_cc_src = tcg_global_mem_new(TCG_AREG0, offsetof(CPUX86State, cc_src),
                                    "cc_src");
    cpu_cc_src2 = tcg_global_mem_new(TCG_AREG0, offsetof(CPUX86State, cc_src2),
                                     "cc_src2");

#ifdef TARGET_X86_64
    cpu_regs[R_EAX] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EAX]), "rax");
    cpu_regs[R_ECX] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ECX]), "rcx");
    cpu_regs[R_EDX] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EDX]), "rdx");
    cpu_regs[R_EBX] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EBX]), "rbx");
    cpu_regs[R_ESP] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ESP]), "rsp");
    cpu_regs[R_EBP] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EBP]), "rbp");
    cpu_regs[R_ESI] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ESI]), "rsi");
    cpu_regs[R_EDI] = tcg_global_mem_new_i64(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EDI]), "rdi");
    cpu_regs[8] = tcg_global_mem_new_i64(TCG_AREG0,
                                         offsetof(CPUX86State, regs[8]), "r8");
    cpu_regs[9] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[9]), "r9");
    cpu_regs[10] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[10]), "r10");
    cpu_regs[11] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[11]), "r11");
    cpu_regs[12] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[12]), "r12");
    cpu_regs[13] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[13]), "r13");
    cpu_regs[14] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[14]), "r14");
    cpu_regs[15] = tcg_global_mem_new_i64(TCG_AREG0,
                                          offsetof(CPUX86State, regs[15]), "r15");
#else
    cpu_regs[R_EAX] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EAX]), "eax");
    cpu_regs[R_ECX] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ECX]), "ecx");
    cpu_regs[R_EDX] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EDX]), "edx");
    cpu_regs[R_EBX] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EBX]), "ebx");
    cpu_regs[R_ESP] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ESP]), "esp");
    cpu_regs[R_EBP] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EBP]), "ebp");
    cpu_regs[R_ESI] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_ESI]), "esi");
    cpu_regs[R_EDI] = tcg_global_mem_new_i32(TCG_AREG0,
                                             offsetof(CPUX86State, regs[R_EDI]), "edi");
#endif
}

/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
   basic block 'tb'. If search_pc is TRUE, also generate PC
   information for each intermediate instruction. */
static inline void gen_intermediate_code_internal(X86CPU *cpu,
                                                  TranslationBlock *tb,
                                                  bool search_pc)
{
    CPUState *cs = CPU(cpu);
    CPUX86State *env = &cpu->env;
    DisasContext dc1, *dc = &dc1;
    target_ulong pc_ptr;
    uint16_t *gen_opc_end;
    CPUBreakpoint *bp;
    int j, lj;
    uint64_t flags;
    target_ulong pc_start;
    target_ulong cs_base;
    int num_insns;
    int max_insns;

    /* generate intermediate code */
    pc_start = tb->pc;
    cs_base = tb->cs_base;
    flags = tb->flags;

    dc->pe = (flags >> HF_PE_SHIFT) & 1;
    dc->code32 = (flags >> HF_CS32_SHIFT) & 1;
    dc->ss32 = (flags >> HF_SS32_SHIFT) & 1;
    dc->addseg = (flags >> HF_ADDSEG_SHIFT) & 1;
    dc->f_st = 0;
    dc->vm86 = (flags >> VM_SHIFT) & 1;
    dc->cpl = (flags >> HF_CPL_SHIFT) & 3;
    dc->iopl = (flags >> IOPL_SHIFT) & 3;
    dc->tf = (flags >> TF_SHIFT) & 1;
    dc->singlestep_enabled = cs->singlestep_enabled;
    dc->cc_op = CC_OP_DYNAMIC;
    dc->cc_op_dirty = false;
    dc->cs_base = cs_base;
    dc->tb = tb;
    dc->popl_esp_hack = 0;
    /* select memory access functions */
    dc->mem_index = 0;
    if (flags & HF_SOFTMMU_MASK) {
        dc->mem_index = cpu_mmu_index(env);
    }
    dc->cpuid_features = env->features[FEAT_1_EDX];
    dc->cpuid_ext_features = env->features[FEAT_1_ECX];
    dc->cpuid_ext2_features = env->features[FEAT_8000_0001_EDX];
    dc->cpuid_ext3_features = env->features[FEAT_8000_0001_ECX];
    dc->cpuid_7_0_ebx_features = env->features[FEAT_7_0_EBX];
#ifdef TARGET_X86_64
    dc->lma = (flags >> HF_LMA_SHIFT) & 1;
    dc->code64 = (flags >> HF_CS64_SHIFT) & 1;
#endif
    dc->flags = flags;
    dc->jmp_opt = !(dc->tf || cs->singlestep_enabled ||
                    (flags & HF_INHIBIT_IRQ_MASK)
#ifndef CONFIG_SOFTMMU
                    || (flags & HF_SOFTMMU_MASK)
#endif
                    );
#if 0
    /* check addseg logic */
    if (!dc->addseg && (dc->vm86 || !dc->pe || !dc->code32))
        printf("ERROR addseg\n");
#endif

    cpu_T[0] = tcg_temp_new();
    cpu_T[1] = tcg_temp_new();
    cpu_A0 = tcg_temp_new();

    cpu_tmp0 = tcg_temp_new();
    cpu_tmp1_i64 = tcg_temp_new_i64();
    cpu_tmp2_i32 = tcg_temp_new_i32();
    cpu_tmp3_i32 = tcg_temp_new_i32();
    cpu_tmp4 = tcg_temp_new();
    cpu_ptr0 = tcg_temp_new_ptr();
    cpu_ptr1 = tcg_temp_new_ptr();
    cpu_cc_srcT = tcg_temp_local_new();

    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;

    dc->is_jmp = DISAS_NEXT;
    pc_ptr = pc_start;
    lj = -1;
    num_insns = 0;
    max_insns = tb->cflags & CF_COUNT_MASK;
    if (max_insns == 0)
        max_insns = CF_COUNT_MASK;

    gen_tb_start();
    for(;;) {
        if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
            QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
                if (bp->pc == pc_ptr &&
                    !((bp->flags & BP_CPU) && (tb->flags & HF_RF_MASK))) {
                    gen_debug(dc, pc_ptr - dc->cs_base);
                    break;
                }
            }
        }
        if (search_pc) {
            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
            if (lj < j) {
                lj++;
                while (lj < j)
                    tcg_ctx.gen_opc_instr_start[lj++] = 0;
            }
            tcg_ctx.gen_opc_pc[lj] = pc_ptr;
            gen_opc_cc_op[lj] = dc->cc_op;
            tcg_ctx.gen_opc_instr_start[lj] = 1;
            tcg_ctx.gen_opc_icount[lj] = num_insns;
        }
        if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
            gen_io_start();

        pc_ptr = disas_insn(env, dc, pc_ptr);
        num_insns++;
        /* stop translation if indicated */
        if (dc->is_jmp)
            break;
        /* if single step mode, we generate only one instruction and
           generate an exception */
        /* if irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear
           the flag and abort the translation to give the irqs a
           change to be happen */
        if (dc->tf || dc->singlestep_enabled ||
            (flags & HF_INHIBIT_IRQ_MASK)) {
            gen_jmp_im(pc_ptr - dc->cs_base);
            gen_eob(dc);
            break;
        }
        /* if too long translation, stop generation too */
        if (tcg_ctx.gen_opc_ptr >= gen_opc_end ||
            (pc_ptr - pc_start) >= (TARGET_PAGE_SIZE - 32) ||
            num_insns >= max_insns) {
            gen_jmp_im(pc_ptr - dc->cs_base);
            gen_eob(dc);
            break;
        }
        if (singlestep) {
            gen_jmp_im(pc_ptr - dc->cs_base);
            gen_eob(dc);
            break;
        }
    }
    if (tb->cflags & CF_LAST_IO)
        gen_io_end();
    gen_tb_end(tb, num_insns);
    *tcg_ctx.gen_opc_ptr = INDEX_op_end;
    /* we don't forget to fill the last values */
    if (search_pc) {
        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
        lj++;
        while (lj <= j)
            tcg_ctx.gen_opc_instr_start[lj++] = 0;
    }

#ifdef DEBUG_DISAS
    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
        int disas_flags;
        qemu_log("----------------\n");
        qemu_log("IN: %s\n", lookup_symbol(pc_start));
#ifdef TARGET_X86_64
        if (dc->code64)
            disas_flags = 2;
        else
#endif
            disas_flags = !dc->code32;
        log_target_disas(env, pc_start, pc_ptr - pc_start, disas_flags);
        qemu_log("\n");
    }
#endif

    if (!search_pc) {
        tb->size = pc_ptr - pc_start;
        tb->icount = num_insns;
    }
}

void gen_intermediate_code(CPUX86State *env, TranslationBlock *tb)
{
    gen_intermediate_code_internal(x86_env_get_cpu(env), tb, false);
}

void gen_intermediate_code_pc(CPUX86State *env, TranslationBlock *tb)
{
    gen_intermediate_code_internal(x86_env_get_cpu(env), tb, true);
}

void restore_state_to_opc(CPUX86State *env, TranslationBlock *tb, int pc_pos)
{
    int cc_op;
#ifdef DEBUG_DISAS
    if (qemu_loglevel_mask(CPU_LOG_TB_OP)) {
        int i;
        qemu_log("RESTORE:\n");
        for(i = 0;i <= pc_pos; i++) {
            if (tcg_ctx.gen_opc_instr_start[i]) {
                qemu_log("0x%04x: " TARGET_FMT_lx "\n", i,
                        tcg_ctx.gen_opc_pc[i]);
            }
        }
        qemu_log("pc_pos=0x%x eip=" TARGET_FMT_lx " cs_base=%x\n",
                pc_pos, tcg_ctx.gen_opc_pc[pc_pos] - tb->cs_base,
                (uint32_t)tb->cs_base);
    }
#endif
    env->eip = tcg_ctx.gen_opc_pc[pc_pos] - tb->cs_base;
    cc_op = gen_opc_cc_op[pc_pos];
    if (cc_op != CC_OP_DYNAMIC)
        env->cc_op = cc_op;
}