Skip to content

Q
qemu

openeuler / qemu

通知 10
Star 0
Fork 0
Q
qemu
提交 e083c4a2 编写于 作者: R Richard Henderson
浏览文件
操作

tcg-ppc64: Define TCG_TARGET_INSN_UNIT_SIZE 

And use tcg pointer differencing functions as appropriate.
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
上级 f6bff89d
隐藏空白更改
内联 并排
Showing with 81 addition and 84 deletion
tcg/ppc64/tcg-target.c
浏览文件 @ e083c4a2
......@@ -31,7 +31,7 @@
#define TCG_CT_CONST_ZERO 0x1000
#define TCG_CT_CONST_MONE 0x2000
static uint8_t *tb_ret_addr;
static tcg_insn_unit *tb_ret_addr;
#if TARGET_LONG_BITS == 32
#define LD_ADDR LWZ
......@@ -168,61 +168,54 @@ static inline bool in_range_b(tcg_target_long target)
return target == sextract64(target, 0, 26);
}
static uint32_t reloc_pc24_val(void *pc, tcg_target_long target)
static uint32_t reloc_pc24_val(tcg_insn_unit *pc, tcg_insn_unit *target)
{
tcg_target_long disp;
disp = target - (tcg_target_long)pc;
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
assert(in_range_b(disp));
return disp & 0x3fffffc;
}
static void reloc_pc24(void *pc, tcg_target_long target)
static void reloc_pc24(tcg_insn_unit *pc, tcg_insn_unit *target)
{
*(uint32_t *)pc = (*(uint32_t *)pc & ~0x3fffffc)
| reloc_pc24_val(pc, target);
*pc = (*pc & ~0x3fffffc) | reloc_pc24_val(pc, target);
}
static uint16_t reloc_pc14_val(void *pc, tcg_target_long target)
static uint16_t reloc_pc14_val(tcg_insn_unit *pc, tcg_insn_unit *target)
{
tcg_target_long disp;
disp = target - (tcg_target_long)pc;
if (disp != (int16_t) disp) {
tcg_abort();
}
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
assert(disp == (int16_t) disp);
return disp & 0xfffc;
}
static void reloc_pc14(void *pc, tcg_target_long target)
static void reloc_pc14(tcg_insn_unit *pc, tcg_insn_unit *target)
{
*(uint32_t *)pc = (*(uint32_t *)pc & ~0xfffc) | reloc_pc14_val(pc, target);
*pc = (*pc & ~0xfffc) | reloc_pc14_val(pc, target);
}
static inline void tcg_out_b_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *(uint32_t *)s->code_ptr & 0x3fffffc;
unsigned retrans = *s->code_ptr & 0x3fffffc;
tcg_out32(s, insn | retrans);
}
static inline void tcg_out_bc_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *(uint32_t *)s->code_ptr & 0xfffc;
unsigned retrans = *s->code_ptr & 0xfffc;
tcg_out32(s, insn | retrans);
}
static void patch_reloc(uint8_t *code_ptr, int type,
static void patch_reloc(tcg_insn_unit *code_ptr, int type,
intptr_t value, intptr_t addend)
{
value += addend;
tcg_insn_unit *target = (tcg_insn_unit *)value;
assert(addend == 0);
switch (type) {
case R_PPC_REL14:
reloc_pc14(code_ptr, value);
reloc_pc14(code_ptr, target);
break;
case R_PPC_REL24:
reloc_pc24(code_ptr, value);
reloc_pc24(code_ptr, target);
break;
default:
tcg_abort();
......@@ -702,62 +695,66 @@ static void tcg_out_xori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
tcg_out_zori32(s, dst, src, c, XORI, XORIS);
}
static void tcg_out_b(TCGContext *s, int mask, tcg_target_long target)
static void tcg_out_b(TCGContext *s, int mask, tcg_insn_unit *target)
{
tcg_target_long disp;
disp = target - (tcg_target_long)s->code_ptr;
ptrdiff_t disp = tcg_pcrel_diff(s, target);
if (in_range_b(disp)) {
tcg_out32(s, B | (disp & 0x3fffffc) | mask);
} else {
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, (tcg_target_long)target);
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, (uintptr_t)target);
tcg_out32(s, MTSPR | RS(TCG_REG_R0) | CTR);
tcg_out32(s, BCCTR | BO_ALWAYS | mask);
}
}
static void tcg_out_call(TCGContext *s, tcg_target_long arg, int const_arg)
static void tcg_out_calli(TCGContext *s, void *target)
{
#ifdef __APPLE__
if (const_arg) {
tcg_out_b(s, LK, arg);
} else {
tcg_out32(s, MTSPR | RS(arg) | LR);
tcg_out32(s, BCLR | BO_ALWAYS | LK);
}
tcg_out_b(s, LK, target);
#else
TCGReg reg = arg;
int ofs = 0;
if (const_arg) {
/* Look through the descriptor. If the branch is in range, and we
don't have to spend too much effort on building the toc. */
intptr_t tgt = ((intptr_t *)arg)[0];
intptr_t toc = ((intptr_t *)arg)[1];
intptr_t diff = tgt - (intptr_t)s->code_ptr;
if (in_range_b(diff) && toc == (uint32_t)toc) {
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R2, toc);
tcg_out_b(s, LK, tgt);
return;
}
/* Look through the descriptor. If the branch is in range, and we
don't have to spend too much effort on building the toc. */
void *tgt = ((void **)target)[0];
uintptr_t toc = ((uintptr_t *)target)[1];
intptr_t diff = tcg_pcrel_diff(s, tgt);
if (in_range_b(diff) && toc == (uint32_t)toc) {
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R2, toc);
tcg_out_b(s, LK, tgt);
} else {
/* Fold the low bits of the constant into the addresses below. */
ofs = (int16_t)arg;
intptr_t arg = (intptr_t)target;
int ofs = (int16_t)arg;
if (ofs + 8 < 0x8000) {
arg -= ofs;
} else {
ofs = 0;
}
reg = TCG_REG_R2;
tcg_out_movi(s, TCG_TYPE_I64, reg, arg);
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R2, arg);
tcg_out32(s, LD | TAI(TCG_REG_R0, TCG_REG_R2, ofs));
tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR);
tcg_out32(s, LD | TAI(TCG_REG_R2, TCG_REG_R2, ofs + 8));
tcg_out32(s, BCCTR | BO_ALWAYS | LK);
}
#endif
}
tcg_out32(s, LD | TAI(TCG_REG_R0, reg, ofs));
tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR);
tcg_out32(s, LD | TAI(TCG_REG_R2, reg, ofs + 8));
tcg_out32(s, BCCTR | BO_ALWAYS | LK);
static void tcg_out_call(TCGContext *s, TCGArg arg, int const_arg)
{
if (const_arg) {
tcg_out_calli(s, (void *)(uintptr_t)arg);
} else {
#ifdef __APPLE__
tcg_out32(s, MTSPR | RS(arg) | LR);
tcg_out32(s, BCLR | BO_ALWAYS | LK);
#else
tcg_out32(s, LD | TAI(TCG_REG_R0, arg, 0));
tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR);
tcg_out32(s, LD | TAI(TCG_REG_R2, arg, 8));
tcg_out32(s, BCCTR | BO_ALWAYS | LK);
#endif
}
}
static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
......@@ -844,7 +841,7 @@ static const uint32_t qemu_exts_opc[4] = {
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
* int mmu_idx, uintptr_t ra)
*/
static const void * const qemu_ld_helpers[16] = {
static void * const qemu_ld_helpers[16] = {
[MO_UB] = helper_ret_ldub_mmu,
[MO_LEUW] = helper_le_lduw_mmu,
[MO_LEUL] = helper_le_ldul_mmu,
......@@ -857,7 +854,7 @@ static const void * const qemu_ld_helpers[16] = {
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
* uintxx_t val, int mmu_idx, uintptr_t ra)
*/
static const void * const qemu_st_helpers[16] = {
static void * const qemu_st_helpers[16] = {
[MO_UB] = helper_ret_stb_mmu,
[MO_LEUW] = helper_le_stw_mmu,
[MO_LEUL] = helper_le_stl_mmu,
......@@ -946,7 +943,7 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGMemOp s_bits, TCGReg addr_reg,
helper code. */
static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOp opc,
int data_reg, int addr_reg, int mem_index,
uint8_t *raddr, uint8_t *label_ptr)
tcg_insn_unit *raddr, tcg_insn_unit *label_ptr)
{
TCGLabelQemuLdst *label = new_ldst_label(s);
......@@ -963,7 +960,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGMemOp opc = lb->opc;
reloc_pc14(lb->label_ptr[0], (uintptr_t)s->code_ptr);
reloc_pc14(lb->label_ptr[0], s->code_ptr);
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_R3, TCG_AREG0);
......@@ -974,7 +971,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R5, lb->mem_index);
tcg_out32(s, MFSPR | RT(TCG_REG_R6) | LR);
tcg_out_call(s, (tcg_target_long)qemu_ld_helpers[opc & ~MO_SIGN], 1);
tcg_out_calli(s, qemu_ld_helpers[opc & ~MO_SIGN]);
if (opc & MO_SIGN) {
uint32_t insn = qemu_exts_opc[opc & MO_SIZE];
......@@ -983,7 +980,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
tcg_out_mov(s, TCG_TYPE_I64, lb->datalo_reg, TCG_REG_R3);
}
tcg_out_b(s, 0, (uintptr_t)lb->raddr);
tcg_out_b(s, 0, lb->raddr);
}
static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
......@@ -991,7 +988,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
TCGMemOp opc = lb->opc;
TCGMemOp s_bits = opc & MO_SIZE;
reloc_pc14(lb->label_ptr[0], (uintptr_t)s->code_ptr);
reloc_pc14(lb->label_ptr[0], s->code_ptr);
tcg_out_mov(s, TCG_TYPE_I64, TCG_REG_R3, TCG_AREG0);
......@@ -1004,9 +1001,9 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R6, lb->mem_index);
tcg_out32(s, MFSPR | RT(TCG_REG_R7) | LR);
tcg_out_call(s, (tcg_target_long)qemu_st_helpers[opc], 1);
tcg_out_calli(s, qemu_st_helpers[opc]);
tcg_out_b(s, 0, (uintptr_t)lb->raddr);
tcg_out_b(s, 0, lb->raddr);
}
#endif /* SOFTMMU */
......@@ -1017,7 +1014,7 @@ static void tcg_out_qemu_ld(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
uint32_t insn;
TCGMemOp s_bits = opc & MO_SIZE;
#ifdef CONFIG_SOFTMMU
void *label_ptr;
tcg_insn_unit *label_ptr;
#endif
#ifdef CONFIG_SOFTMMU
......@@ -1063,7 +1060,7 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
TCGReg rbase;
uint32_t insn;
#ifdef CONFIG_SOFTMMU
void *label_ptr;
tcg_insn_unit *label_ptr;
#endif
#ifdef CONFIG_SOFTMMU
......@@ -1123,7 +1120,8 @@ static void tcg_target_qemu_prologue(TCGContext *s)
#ifndef __APPLE__
/* First emit adhoc function descriptor */
tcg_out64(s, (uint64_t)s->code_ptr + 24); /* entry point */
s->code_ptr += 16; /* skip TOC and environment pointer */
tcg_out64(s, 0); /* toc */
tcg_out64(s, 0); /* environment pointer */
#endif
/* Prologue */
......@@ -1415,7 +1413,7 @@ static void tcg_out_bc(TCGContext *s, int bc, int label_index)
TCGLabel *l = &s->labels[label_index];
if (l->has_value) {
tcg_out32(s, bc | reloc_pc14_val(s->code_ptr, l->u.value));
tcg_out32(s, bc | reloc_pc14_val(s->code_ptr, l->u.value_ptr));
} else {
tcg_out_reloc(s, s->code_ptr, R_PPC_REL14, label_index, 0);
tcg_out_bc_noaddr(s, bc);
......@@ -1478,15 +1476,13 @@ static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond,
}
}
void ppc_tb_set_jmp_target(unsigned long jmp_addr, unsigned long addr)
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
{
TCGContext s;
unsigned long patch_size;
s.code_ptr = (uint8_t *) jmp_addr;
tcg_out_b(&s, 0, addr);
patch_size = s.code_ptr - (uint8_t *) jmp_addr;
flush_icache_range(jmp_addr, jmp_addr + patch_size);
s.code_buf = s.code_ptr = (tcg_insn_unit *)jmp_addr;
tcg_out_b(&s, 0, (tcg_insn_unit *)addr);
flush_icache_range(jmp_addr, jmp_addr + tcg_current_code_size(&s));
}
static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
......@@ -1498,25 +1494,25 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
switch (opc) {
case INDEX_op_exit_tb:
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
tcg_out_b(s, 0, (tcg_target_long)tb_ret_addr);
tcg_out_b(s, 0, tb_ret_addr);
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
/* Direct jump method. */
s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
s->code_ptr += 28;
s->tb_jmp_offset[args[0]] = tcg_current_code_size(s);
s->code_ptr += 7;
} else {
/* Indirect jump method. */
tcg_abort();
}
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
s->tb_next_offset[args[0]] = tcg_current_code_size(s);
break;
case INDEX_op_br:
{
TCGLabel *l = &s->labels[args[0]];
if (l->has_value) {
tcg_out_b(s, 0, l->u.value);
tcg_out_b(s, 0, l->u.value_ptr);
} else {
tcg_out_reloc(s, s->code_ptr, R_PPC_REL24, args[0], 0);
tcg_out_b_noaddr(s, B);
......
tcg/ppc64/tcg-target.h
浏览文件 @ e083c4a2
......@@ -25,6 +25,7 @@
#define TCG_TARGET_PPC64 1
#define TCG_TARGET_NB_REGS 32
#define TCG_TARGET_INSN_UNIT_SIZE 4
typedef enum {
TCG_REG_R0 = 0,
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或