/* * qemu user main * * Copyright (c) 2003 Fabrice Bellard * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include "qemu.h" #define DEBUG_LOGFILE "/tmp/qemu.log" #ifdef __APPLE__ #include # define environ (*_NSGetEnviron()) #endif static const char *interp_prefix = CONFIG_QEMU_PREFIX; const char *qemu_uname_release = CONFIG_UNAME_RELEASE; #if defined(__i386__) && !defined(CONFIG_STATIC) /* Force usage of an ELF interpreter even if it is an ELF shared object ! */ const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2"; #endif /* for recent libc, we add these dummy symbols which are not declared when generating a linked object (bug in ld ?) */ #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC) long __preinit_array_start[0]; long __preinit_array_end[0]; long __init_array_start[0]; long __init_array_end[0]; long __fini_array_start[0]; long __fini_array_end[0]; #endif /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so we allocate a bigger stack. Need a better solution, for example by remapping the process stack directly at the right place */ unsigned long x86_stack_size = 512 * 1024; void gemu_log(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); } void cpu_outb(CPUState *env, int addr, int val) { fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val); } void cpu_outw(CPUState *env, int addr, int val) { fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val); } void cpu_outl(CPUState *env, int addr, int val) { fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val); } int cpu_inb(CPUState *env, int addr) { fprintf(stderr, "inb: port=0x%04x\n", addr); return 0; } int cpu_inw(CPUState *env, int addr) { fprintf(stderr, "inw: port=0x%04x\n", addr); return 0; } int cpu_inl(CPUState *env, int addr) { fprintf(stderr, "inl: port=0x%04x\n", addr); return 0; } int cpu_get_pic_interrupt(CPUState *env) { return -1; } /* timers for rdtsc */ #if 0 static uint64_t emu_time; int64_t cpu_get_real_ticks(void) { return emu_time++; } #endif #ifdef TARGET_I386 /***********************************************************/ /* CPUX86 core interface */ void cpu_smm_update(CPUState *env) { } uint64_t cpu_get_tsc(CPUX86State *env) { return cpu_get_real_ticks(); } static void write_dt(void *ptr, unsigned long addr, unsigned long limit, int flags) { unsigned int e1, e2; uint32_t *p; e1 = (addr << 16) | (limit & 0xffff); e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); e2 |= flags; p = ptr; p[0] = tswapl(e1); p[1] = tswapl(e2); } static void set_gate(void *ptr, unsigned int type, unsigned int dpl, unsigned long addr, unsigned int sel) { unsigned int e1, e2; uint32_t *p; e1 = (addr & 0xffff) | (sel << 16); e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); p = ptr; p[0] = tswapl(e1); p[1] = tswapl(e2); } uint64_t gdt_table[6]; uint64_t idt_table[256]; /* only dpl matters as we do only user space emulation */ static void set_idt(int n, unsigned int dpl) { set_gate(idt_table + n, 0, dpl, 0, 0); } void cpu_loop(CPUX86State *env) { int trapnr; target_ulong pc; target_siginfo_t info; for(;;) { trapnr = cpu_x86_exec(env); switch(trapnr) { case 0x80: /* linux syscall */ env->regs[R_EAX] = do_syscall(env, env->regs[R_EAX], env->regs[R_EBX], env->regs[R_ECX], env->regs[R_EDX], env->regs[R_ESI], env->regs[R_EDI], env->regs[R_EBP]); break; case EXCP0B_NOSEG: case EXCP0C_STACK: info.si_signo = SIGBUS; info.si_errno = 0; info.si_code = TARGET_SI_KERNEL; info._sifields._sigfault._addr = 0; queue_signal(info.si_signo, &info); break; case EXCP0D_GPF: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_fault(env); } else #endif { info.si_signo = SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SI_KERNEL; info._sifields._sigfault._addr = 0; queue_signal(info.si_signo, &info); } break; case EXCP0E_PAGE: info.si_signo = SIGSEGV; info.si_errno = 0; if (!(env->error_code & 1)) info.si_code = TARGET_SEGV_MAPERR; else info.si_code = TARGET_SEGV_ACCERR; info._sifields._sigfault._addr = env->cr[2]; queue_signal(info.si_signo, &info); break; case EXCP00_DIVZ: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); } else #endif { /* division by zero */ info.si_signo = SIGFPE; info.si_errno = 0; info.si_code = TARGET_FPE_INTDIV; info._sifields._sigfault._addr = env->eip; queue_signal(info.si_signo, &info); } break; case EXCP01_SSTP: case EXCP03_INT3: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); } else #endif { info.si_signo = SIGTRAP; info.si_errno = 0; if (trapnr == EXCP01_SSTP) { info.si_code = TARGET_TRAP_BRKPT; info._sifields._sigfault._addr = env->eip; } else { info.si_code = TARGET_SI_KERNEL; info._sifields._sigfault._addr = 0; } queue_signal(info.si_signo, &info); } break; case EXCP04_INTO: case EXCP05_BOUND: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); } else #endif { info.si_signo = SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SI_KERNEL; info._sifields._sigfault._addr = 0; queue_signal(info.si_signo, &info); } break; case EXCP06_ILLOP: info.si_signo = SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_ILLOPN; info._sifields._sigfault._addr = env->eip; queue_signal(info.si_signo, &info); break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: pc = env->segs[R_CS].base + env->eip; fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", (long)pc, trapnr); abort(); } process_pending_signals(env); } } #endif #ifdef TARGET_ARM /* XXX: find a better solution */ extern void tb_invalidate_page_range(target_ulong start, target_ulong end); static void arm_cache_flush(target_ulong start, target_ulong last) { target_ulong addr, last1; if (last < start) return; addr = start; for(;;) { last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1; if (last1 > last) last1 = last; tb_invalidate_page_range(addr, last1 + 1); if (last1 == last) break; addr = last1 + 1; } } void cpu_loop(CPUARMState *env) { int trapnr; unsigned int n, insn; target_siginfo_t info; uint32_t addr; for(;;) { trapnr = cpu_arm_exec(env); switch(trapnr) { case EXCP_UDEF: { TaskState *ts = env->opaque; uint32_t opcode; /* we handle the FPU emulation here, as Linux */ /* we get the opcode */ opcode = tget32(env->regs[15]); if (EmulateAll(opcode, &ts->fpa, env) == 0) { info.si_signo = SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_ILLOPN; info._sifields._sigfault._addr = env->regs[15]; queue_signal(info.si_signo, &info); } else { /* increment PC */ env->regs[15] += 4; } } break; case EXCP_SWI: case EXCP_BKPT: { env->eabi = 1; /* system call */ if (trapnr == EXCP_BKPT) { if (env->thumb) { insn = tget16(env->regs[15]); n = insn & 0xff; env->regs[15] += 2; } else { insn = tget32(env->regs[15]); n = (insn & 0xf) | ((insn >> 4) & 0xff0); env->regs[15] += 4; } } else { if (env->thumb) { insn = tget16(env->regs[15] - 2); n = insn & 0xff; } else { insn = tget32(env->regs[15] - 4); n = insn & 0xffffff; } } if (n == ARM_NR_cacheflush) { arm_cache_flush(env->regs[0], env->regs[1]); } else if (n == ARM_NR_semihosting || n == ARM_NR_thumb_semihosting) { env->regs[0] = do_arm_semihosting (env); } else if (n == 0 || n >= ARM_SYSCALL_BASE || (env->thumb && n == ARM_THUMB_SYSCALL)) { /* linux syscall */ if (env->thumb || n == 0) { n = env->regs[7]; } else { n -= ARM_SYSCALL_BASE; env->eabi = 0; } env->regs[0] = do_syscall(env, n, env->regs[0], env->regs[1], env->regs[2], env->regs[3], env->regs[4], env->regs[5]); } else { goto error; } } break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_PREFETCH_ABORT: addr = env->cp15.c6_data; goto do_segv; case EXCP_DATA_ABORT: addr = env->cp15.c6_insn; goto do_segv; do_segv: { info.si_signo = SIGSEGV; info.si_errno = 0; /* XXX: check env->error_code */ info.si_code = TARGET_SEGV_MAPERR; info._sifields._sigfault._addr = addr; queue_signal(info.si_signo, &info); } break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: error: fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); abort(); } process_pending_signals(env); } } #endif #ifdef TARGET_SPARC //#define DEBUG_WIN /* WARNING: dealing with register windows _is_ complicated. More info can be found at http://www.sics.se/~psm/sparcstack.html */ static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) { index = (index + cwp * 16) & (16 * NWINDOWS - 1); /* wrap handling : if cwp is on the last window, then we use the registers 'after' the end */ if (index < 8 && env->cwp == (NWINDOWS - 1)) index += (16 * NWINDOWS); return index; } /* save the register window 'cwp1' */ static inline void save_window_offset(CPUSPARCState *env, int cwp1) { unsigned int i; target_ulong sp_ptr; sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; #if defined(DEBUG_WIN) printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n", (int)sp_ptr, cwp1); #endif for(i = 0; i < 16; i++) { tputl(sp_ptr, env->regbase[get_reg_index(env, cwp1, 8 + i)]); sp_ptr += sizeof(target_ulong); } } static void save_window(CPUSPARCState *env) { #ifndef TARGET_SPARC64 unsigned int new_wim; new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) & ((1LL << NWINDOWS) - 1); save_window_offset(env, (env->cwp - 2) & (NWINDOWS - 1)); env->wim = new_wim; #else save_window_offset(env, (env->cwp - 2) & (NWINDOWS - 1)); env->cansave++; env->canrestore--; #endif } static void restore_window(CPUSPARCState *env) { unsigned int new_wim, i, cwp1; target_ulong sp_ptr; new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) & ((1LL << NWINDOWS) - 1); /* restore the invalid window */ cwp1 = (env->cwp + 1) & (NWINDOWS - 1); sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; #if defined(DEBUG_WIN) printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n", (int)sp_ptr, cwp1); #endif for(i = 0; i < 16; i++) { env->regbase[get_reg_index(env, cwp1, 8 + i)] = tgetl(sp_ptr); sp_ptr += sizeof(target_ulong); } env->wim = new_wim; #ifdef TARGET_SPARC64 env->canrestore++; if (env->cleanwin < NWINDOWS - 1) env->cleanwin++; env->cansave--; #endif } static void flush_windows(CPUSPARCState *env) { int offset, cwp1; offset = 1; for(;;) { /* if restore would invoke restore_window(), then we can stop */ cwp1 = (env->cwp + offset) & (NWINDOWS - 1); if (env->wim & (1 << cwp1)) break; save_window_offset(env, cwp1); offset++; } /* set wim so that restore will reload the registers */ cwp1 = (env->cwp + 1) & (NWINDOWS - 1); env->wim = 1 << cwp1; #if defined(DEBUG_WIN) printf("flush_windows: nb=%d\n", offset - 1); #endif } void cpu_loop (CPUSPARCState *env) { int trapnr, ret; target_siginfo_t info; while (1) { trapnr = cpu_sparc_exec (env); switch (trapnr) { #ifndef TARGET_SPARC64 case 0x88: case 0x90: #else case 0x16d: #endif ret = do_syscall (env, env->gregs[1], env->regwptr[0], env->regwptr[1], env->regwptr[2], env->regwptr[3], env->regwptr[4], env->regwptr[5]); if ((unsigned int)ret >= (unsigned int)(-515)) { #ifdef TARGET_SPARC64 env->xcc |= PSR_CARRY; #else env->psr |= PSR_CARRY; #endif ret = -ret; } else { #ifdef TARGET_SPARC64 env->xcc &= ~PSR_CARRY; #else env->psr &= ~PSR_CARRY; #endif } env->regwptr[0] = ret; /* next instruction */ env->pc = env->npc; env->npc = env->npc + 4; break; case 0x83: /* flush windows */ flush_windows(env); /* next instruction */ env->pc = env->npc; env->npc = env->npc + 4; break; #ifndef TARGET_SPARC64 case TT_WIN_OVF: /* window overflow */ save_window(env); break; case TT_WIN_UNF: /* window underflow */ restore_window(env); break; case TT_TFAULT: case TT_DFAULT: { info.si_signo = SIGSEGV; info.si_errno = 0; /* XXX: check env->error_code */ info.si_code = TARGET_SEGV_MAPERR; info._sifields._sigfault._addr = env->mmuregs[4]; queue_signal(info.si_signo, &info); } break; #else case TT_SPILL: /* window overflow */ save_window(env); break; case TT_FILL: /* window underflow */ restore_window(env); break; case TT_TFAULT: case TT_DFAULT: { info.si_signo = SIGSEGV; info.si_errno = 0; /* XXX: check env->error_code */ info.si_code = TARGET_SEGV_MAPERR; if (trapnr == TT_DFAULT) info._sifields._sigfault._addr = env->dmmuregs[4]; else info._sifields._sigfault._addr = env->tpc[env->tl]; queue_signal(info.si_signo, &info); } break; #endif case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: printf ("Unhandled trap: 0x%x\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); exit (1); } process_pending_signals (env); } } #endif #ifdef TARGET_PPC static inline uint64_t cpu_ppc_get_tb (CPUState *env) { /* TO FIX */ return 0; } uint32_t cpu_ppc_load_tbl (CPUState *env) { return cpu_ppc_get_tb(env) & 0xFFFFFFFF; } uint32_t cpu_ppc_load_tbu (CPUState *env) { return cpu_ppc_get_tb(env) >> 32; } static void cpu_ppc_store_tb (CPUState *env, uint64_t value) { /* TO FIX */ } void cpu_ppc_store_tbu (CPUState *env, uint32_t value) { cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env)); } void cpu_ppc_store_tbl (CPUState *env, uint32_t value) { cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value); } void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value) __attribute__ (( alias ("cpu_ppc_store_tbu") )); uint32_t cpu_ppc601_load_rtcu (CPUState *env) __attribute__ (( alias ("cpu_ppc_load_tbu") )); void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value) { cpu_ppc_store_tbl(env, value & 0x3FFFFF80); } uint32_t cpu_ppc601_load_rtcl (CPUState *env) { return cpu_ppc_load_tbl(env) & 0x3FFFFF80; } void cpu_loop(CPUPPCState *env) { target_siginfo_t info; int trapnr; uint32_t ret; for(;;) { trapnr = cpu_ppc_exec(env); if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH && trapnr != EXCP_TRACE) { if (loglevel > 0) { cpu_dump_state(env, logfile, fprintf, 0); } } switch(trapnr) { case EXCP_NONE: break; case EXCP_SYSCALL_USER: /* system call */ /* WARNING: * PPC ABI uses overflow flag in cr0 to signal an error * in syscalls. */ #if 0 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]); #endif env->crf[0] &= ~0x1; ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6], env->gpr[7], env->gpr[8]); if (ret > (uint32_t)(-515)) { env->crf[0] |= 0x1; ret = -ret; } env->gpr[3] = ret; #if 0 printf("syscall returned 0x%08x (%d)\n", ret, ret); #endif break; case EXCP_RESET: /* Should not happen ! */ fprintf(stderr, "RESET asked... Stop emulation\n"); if (loglevel) fprintf(logfile, "RESET asked... Stop emulation\n"); abort(); case EXCP_MACHINE_CHECK: fprintf(stderr, "Machine check exeption... Stop emulation\n"); if (loglevel) fprintf(logfile, "RESET asked... Stop emulation\n"); info.si_signo = TARGET_SIGBUS; info.si_errno = 0; info.si_code = TARGET_BUS_OBJERR; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); case EXCP_DSI: fprintf(stderr, "Invalid data memory access: 0x" ADDRX "\n", env->spr[SPR_DAR]); if (loglevel) { fprintf(logfile, "Invalid data memory access: 0x" ADDRX "\n", env->spr[SPR_DAR]); } switch (env->error_code & 0xFF000000) { case 0x40000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; case 0x04000000: info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_ILLADR; break; case 0x08000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_ACCERR; break; default: /* Let's send a regular segfault... */ fprintf(stderr, "Invalid segfault errno (%02x)\n", env->error_code); if (loglevel) { fprintf(logfile, "Invalid segfault errno (%02x)\n", env->error_code); } info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; } info._sifields._sigfault._addr = env->nip; queue_signal(info.si_signo, &info); break; case EXCP_ISI: fprintf(stderr, "Invalid instruction fetch\n"); if (loglevel) fprintf(logfile, "Invalid instruction fetch\n"); switch (env->error_code & 0xFF000000) { case 0x40000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; case 0x10000000: case 0x08000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_ACCERR; break; default: /* Let's send a regular segfault... */ fprintf(stderr, "Invalid segfault errno (%02x)\n", env->error_code); if (loglevel) { fprintf(logfile, "Invalid segfault errno (%02x)\n", env->error_code); } info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; } info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case EXCP_EXTERNAL: /* Should not happen ! */ fprintf(stderr, "External interruption... Stop emulation\n"); if (loglevel) fprintf(logfile, "External interruption... Stop emulation\n"); abort(); case EXCP_ALIGN: fprintf(stderr, "Invalid unaligned memory access\n"); if (loglevel) fprintf(logfile, "Invalid unaligned memory access\n"); info.si_signo = TARGET_SIGBUS; info.si_errno = 0; info.si_code = TARGET_BUS_ADRALN; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case EXCP_PROGRAM: switch (env->error_code & ~0xF) { case EXCP_FP: fprintf(stderr, "Program exception\n"); if (loglevel) fprintf(logfile, "Program exception\n"); /* Set FX */ env->fpscr[7] |= 0x8; /* Finally, update FEX */ if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) env->fpscr[7] |= 0x4; info.si_signo = TARGET_SIGFPE; info.si_errno = 0; switch (env->error_code & 0xF) { case EXCP_FP_OX: info.si_code = TARGET_FPE_FLTOVF; break; case EXCP_FP_UX: info.si_code = TARGET_FPE_FLTUND; break; case EXCP_FP_ZX: case EXCP_FP_VXZDZ: info.si_code = TARGET_FPE_FLTDIV; break; case EXCP_FP_XX: info.si_code = TARGET_FPE_FLTRES; break; case EXCP_FP_VXSOFT: info.si_code = TARGET_FPE_FLTINV; break; case EXCP_FP_VXNAN: case EXCP_FP_VXISI: case EXCP_FP_VXIDI: case EXCP_FP_VXIMZ: case EXCP_FP_VXVC: case EXCP_FP_VXSQRT: case EXCP_FP_VXCVI: info.si_code = TARGET_FPE_FLTSUB; break; default: fprintf(stderr, "Unknown floating point exception " "(%02x)\n", env->error_code); if (loglevel) { fprintf(logfile, "Unknown floating point exception " "(%02x)\n", env->error_code & 0xF); } } break; case EXCP_INVAL: fprintf(stderr, "Invalid instruction\n"); if (loglevel) fprintf(logfile, "Invalid instruction\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; switch (env->error_code & 0xF) { case EXCP_INVAL_INVAL: info.si_code = TARGET_ILL_ILLOPC; break; case EXCP_INVAL_LSWX: info.si_code = TARGET_ILL_ILLOPN; break; case EXCP_INVAL_SPR: info.si_code = TARGET_ILL_PRVREG; break; case EXCP_INVAL_FP: info.si_code = TARGET_ILL_COPROC; break; default: fprintf(stderr, "Unknown invalid operation (%02x)\n", env->error_code & 0xF); if (loglevel) { fprintf(logfile, "Unknown invalid operation (%02x)\n", env->error_code & 0xF); } info.si_code = TARGET_ILL_ILLADR; break; } break; case EXCP_PRIV: fprintf(stderr, "Privilege violation\n"); if (loglevel) fprintf(logfile, "Privilege violation\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; switch (env->error_code & 0xF) { case EXCP_PRIV_OPC: info.si_code = TARGET_ILL_PRVOPC; break; case EXCP_PRIV_REG: info.si_code = TARGET_ILL_PRVREG; break; default: fprintf(stderr, "Unknown privilege violation (%02x)\n", env->error_code & 0xF); info.si_code = TARGET_ILL_PRVOPC; break; } break; case EXCP_TRAP: fprintf(stderr, "Tried to call a TRAP\n"); if (loglevel) fprintf(logfile, "Tried to call a TRAP\n"); abort(); default: /* Should not happen ! */ fprintf(stderr, "Unknown program exception (%02x)\n", env->error_code); if (loglevel) { fprintf(logfile, "Unknwon program exception (%02x)\n", env->error_code); } abort(); } info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case EXCP_NO_FP: fprintf(stderr, "No floating point allowed\n"); if (loglevel) fprintf(logfile, "No floating point allowed\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_COPROC; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case EXCP_DECR: /* Should not happen ! */ fprintf(stderr, "Decrementer exception\n"); if (loglevel) fprintf(logfile, "Decrementer exception\n"); abort(); case EXCP_TRACE: /* Do nothing: we use this to trace execution */ break; case EXCP_FP_ASSIST: /* Should not happen ! */ fprintf(stderr, "Floating point assist exception\n"); if (loglevel) fprintf(logfile, "Floating point assist exception\n"); abort(); case EXCP_MTMSR: /* We reloaded the msr, just go on */ if (msr_pr == 0) { fprintf(stderr, "Tried to go into supervisor mode !\n"); if (loglevel) fprintf(logfile, "Tried to go into supervisor mode !\n"); abort(); } break; case EXCP_BRANCH: /* We stopped because of a jump... */ break; case EXCP_INTERRUPT: /* Don't know why this should ever happen... */ break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); if (loglevel) { fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - " "0x%02x - aborting\n", trapnr, env->error_code); } abort(); } process_pending_signals(env); } } #endif #ifdef TARGET_MIPS #define MIPS_SYS(name, args) args, static const uint8_t mips_syscall_args[] = { MIPS_SYS(sys_syscall , 0) /* 4000 */ MIPS_SYS(sys_exit , 1) MIPS_SYS(sys_fork , 0) MIPS_SYS(sys_read , 3) MIPS_SYS(sys_write , 3) MIPS_SYS(sys_open , 3) /* 4005 */ MIPS_SYS(sys_close , 1) MIPS_SYS(sys_waitpid , 3) MIPS_SYS(sys_creat , 2) MIPS_SYS(sys_link , 2) MIPS_SYS(sys_unlink , 1) /* 4010 */ MIPS_SYS(sys_execve , 0) MIPS_SYS(sys_chdir , 1) MIPS_SYS(sys_time , 1) MIPS_SYS(sys_mknod , 3) MIPS_SYS(sys_chmod , 2) /* 4015 */ MIPS_SYS(sys_lchown , 3) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */ MIPS_SYS(sys_lseek , 3) MIPS_SYS(sys_getpid , 0) /* 4020 */ MIPS_SYS(sys_mount , 5) MIPS_SYS(sys_oldumount , 1) MIPS_SYS(sys_setuid , 1) MIPS_SYS(sys_getuid , 0) MIPS_SYS(sys_stime , 1) /* 4025 */ MIPS_SYS(sys_ptrace , 4) MIPS_SYS(sys_alarm , 1) MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */ MIPS_SYS(sys_pause , 0) MIPS_SYS(sys_utime , 2) /* 4030 */ MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_access , 2) MIPS_SYS(sys_nice , 1) MIPS_SYS(sys_ni_syscall , 0) /* 4035 */ MIPS_SYS(sys_sync , 0) MIPS_SYS(sys_kill , 2) MIPS_SYS(sys_rename , 2) MIPS_SYS(sys_mkdir , 2) MIPS_SYS(sys_rmdir , 1) /* 4040 */ MIPS_SYS(sys_dup , 1) MIPS_SYS(sys_pipe , 0) MIPS_SYS(sys_times , 1) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_brk , 1) /* 4045 */ MIPS_SYS(sys_setgid , 1) MIPS_SYS(sys_getgid , 0) MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */ MIPS_SYS(sys_geteuid , 0) MIPS_SYS(sys_getegid , 0) /* 4050 */ MIPS_SYS(sys_acct , 0) MIPS_SYS(sys_umount , 2) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_ioctl , 3) MIPS_SYS(sys_fcntl , 3) /* 4055 */ MIPS_SYS(sys_ni_syscall , 2) MIPS_SYS(sys_setpgid , 2) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_olduname , 1) MIPS_SYS(sys_umask , 1) /* 4060 */ MIPS_SYS(sys_chroot , 1) MIPS_SYS(sys_ustat , 2) MIPS_SYS(sys_dup2 , 2) MIPS_SYS(sys_getppid , 0) MIPS_SYS(sys_getpgrp , 0) /* 4065 */ MIPS_SYS(sys_setsid , 0) MIPS_SYS(sys_sigaction , 3) MIPS_SYS(sys_sgetmask , 0) MIPS_SYS(sys_ssetmask , 1) MIPS_SYS(sys_setreuid , 2) /* 4070 */ MIPS_SYS(sys_setregid , 2) MIPS_SYS(sys_sigsuspend , 0) MIPS_SYS(sys_sigpending , 1) MIPS_SYS(sys_sethostname , 2) MIPS_SYS(sys_setrlimit , 2) /* 4075 */ MIPS_SYS(sys_getrlimit , 2) MIPS_SYS(sys_getrusage , 2) MIPS_SYS(sys_gettimeofday, 2) MIPS_SYS(sys_settimeofday, 2) MIPS_SYS(sys_getgroups , 2) /* 4080 */ MIPS_SYS(sys_setgroups , 2) MIPS_SYS(sys_ni_syscall , 0) /* old_select */ MIPS_SYS(sys_symlink , 2) MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */ MIPS_SYS(sys_readlink , 3) /* 4085 */ MIPS_SYS(sys_uselib , 1) MIPS_SYS(sys_swapon , 2) MIPS_SYS(sys_reboot , 3) MIPS_SYS(old_readdir , 3) MIPS_SYS(old_mmap , 6) /* 4090 */ MIPS_SYS(sys_munmap , 2) MIPS_SYS(sys_truncate , 2) MIPS_SYS(sys_ftruncate , 2) MIPS_SYS(sys_fchmod , 2) MIPS_SYS(sys_fchown , 3) /* 4095 */ MIPS_SYS(sys_getpriority , 2) MIPS_SYS(sys_setpriority , 3) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_statfs , 2) MIPS_SYS(sys_fstatfs , 2) /* 4100 */ MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */ MIPS_SYS(sys_socketcall , 2) MIPS_SYS(sys_syslog , 3) MIPS_SYS(sys_setitimer , 3) MIPS_SYS(sys_getitimer , 2) /* 4105 */ MIPS_SYS(sys_newstat , 2) MIPS_SYS(sys_newlstat , 2) MIPS_SYS(sys_newfstat , 2) MIPS_SYS(sys_uname , 1) MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */ MIPS_SYS(sys_vhangup , 0) MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */ MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */ MIPS_SYS(sys_wait4 , 4) MIPS_SYS(sys_swapoff , 1) /* 4115 */ MIPS_SYS(sys_sysinfo , 1) MIPS_SYS(sys_ipc , 6) MIPS_SYS(sys_fsync , 1) MIPS_SYS(sys_sigreturn , 0) MIPS_SYS(sys_clone , 0) /* 4120 */ MIPS_SYS(sys_setdomainname, 2) MIPS_SYS(sys_newuname , 1) MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */ MIPS_SYS(sys_adjtimex , 1) MIPS_SYS(sys_mprotect , 3) /* 4125 */ MIPS_SYS(sys_sigprocmask , 3) MIPS_SYS(sys_ni_syscall , 0) /* was create_module */ MIPS_SYS(sys_init_module , 5) MIPS_SYS(sys_delete_module, 1) MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */ MIPS_SYS(sys_quotactl , 0) MIPS_SYS(sys_getpgid , 1) MIPS_SYS(sys_fchdir , 1) MIPS_SYS(sys_bdflush , 2) MIPS_SYS(sys_sysfs , 3) /* 4135 */ MIPS_SYS(sys_personality , 1) MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */ MIPS_SYS(sys_setfsuid , 1) MIPS_SYS(sys_setfsgid , 1) MIPS_SYS(sys_llseek , 5) /* 4140 */ MIPS_SYS(sys_getdents , 3) MIPS_SYS(sys_select , 5) MIPS_SYS(sys_flock , 2) MIPS_SYS(sys_msync , 3) MIPS_SYS(sys_readv , 3) /* 4145 */ MIPS_SYS(sys_writev , 3) MIPS_SYS(sys_cacheflush , 3) MIPS_SYS(sys_cachectl , 3) MIPS_SYS(sys_sysmips , 4) MIPS_SYS(sys_ni_syscall , 0) /* 4150 */ MIPS_SYS(sys_getsid , 1) MIPS_SYS(sys_fdatasync , 0) MIPS_SYS(sys_sysctl , 1) MIPS_SYS(sys_mlock , 2) MIPS_SYS(sys_munlock , 2) /* 4155 */ MIPS_SYS(sys_mlockall , 1) MIPS_SYS(sys_munlockall , 0) MIPS_SYS(sys_sched_setparam, 2) MIPS_SYS(sys_sched_getparam, 2) MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */ MIPS_SYS(sys_sched_getscheduler, 1) MIPS_SYS(sys_sched_yield , 0) MIPS_SYS(sys_sched_get_priority_max, 1) MIPS_SYS(sys_sched_get_priority_min, 1) MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */ MIPS_SYS(sys_nanosleep, 2) MIPS_SYS(sys_mremap , 4) MIPS_SYS(sys_accept , 3) MIPS_SYS(sys_bind , 3) MIPS_SYS(sys_connect , 3) /* 4170 */ MIPS_SYS(sys_getpeername , 3) MIPS_SYS(sys_getsockname , 3) MIPS_SYS(sys_getsockopt , 5) MIPS_SYS(sys_listen , 2) MIPS_SYS(sys_recv , 4) /* 4175 */ MIPS_SYS(sys_recvfrom , 6) MIPS_SYS(sys_recvmsg , 3) MIPS_SYS(sys_send , 4) MIPS_SYS(sys_sendmsg , 3) MIPS_SYS(sys_sendto , 6) /* 4180 */ MIPS_SYS(sys_setsockopt , 5) MIPS_SYS(sys_shutdown , 2) MIPS_SYS(sys_socket , 3) MIPS_SYS(sys_socketpair , 4) MIPS_SYS(sys_setresuid , 3) /* 4185 */ MIPS_SYS(sys_getresuid , 3) MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */ MIPS_SYS(sys_poll , 3) MIPS_SYS(sys_nfsservctl , 3) MIPS_SYS(sys_setresgid , 3) /* 4190 */ MIPS_SYS(sys_getresgid , 3) MIPS_SYS(sys_prctl , 5) MIPS_SYS(sys_rt_sigreturn, 0) MIPS_SYS(sys_rt_sigaction, 4) MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */ MIPS_SYS(sys_rt_sigpending, 2) MIPS_SYS(sys_rt_sigtimedwait, 4) MIPS_SYS(sys_rt_sigqueueinfo, 3) MIPS_SYS(sys_rt_sigsuspend, 0) MIPS_SYS(sys_pread64 , 6) /* 4200 */ MIPS_SYS(sys_pwrite64 , 6) MIPS_SYS(sys_chown , 3) MIPS_SYS(sys_getcwd , 2) MIPS_SYS(sys_capget , 2) MIPS_SYS(sys_capset , 2) /* 4205 */ MIPS_SYS(sys_sigaltstack , 0) MIPS_SYS(sys_sendfile , 4) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_mmap2 , 6) /* 4210 */ MIPS_SYS(sys_truncate64 , 4) MIPS_SYS(sys_ftruncate64 , 4) MIPS_SYS(sys_stat64 , 2) MIPS_SYS(sys_lstat64 , 2) MIPS_SYS(sys_fstat64 , 2) /* 4215 */ MIPS_SYS(sys_pivot_root , 2) MIPS_SYS(sys_mincore , 3) MIPS_SYS(sys_madvise , 3) MIPS_SYS(sys_getdents64 , 3) MIPS_SYS(sys_fcntl64 , 3) /* 4220 */ MIPS_SYS(sys_ni_syscall , 0) MIPS_SYS(sys_gettid , 0) MIPS_SYS(sys_readahead , 5) MIPS_SYS(sys_setxattr , 5) MIPS_SYS(sys_lsetxattr , 5) /* 4225 */ MIPS_SYS(sys_fsetxattr , 5) MIPS_SYS(sys_getxattr , 4) MIPS_SYS(sys_lgetxattr , 4) MIPS_SYS(sys_fgetxattr , 4) MIPS_SYS(sys_listxattr , 3) /* 4230 */ MIPS_SYS(sys_llistxattr , 3) MIPS_SYS(sys_flistxattr , 3) MIPS_SYS(sys_removexattr , 2) MIPS_SYS(sys_lremovexattr, 2) MIPS_SYS(sys_fremovexattr, 2) /* 4235 */ MIPS_SYS(sys_tkill , 2) MIPS_SYS(sys_sendfile64 , 5) MIPS_SYS(sys_futex , 2) MIPS_SYS(sys_sched_setaffinity, 3) MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */ MIPS_SYS(sys_io_setup , 2) MIPS_SYS(sys_io_destroy , 1) MIPS_SYS(sys_io_getevents, 5) MIPS_SYS(sys_io_submit , 3) MIPS_SYS(sys_io_cancel , 3) /* 4245 */ MIPS_SYS(sys_exit_group , 1) MIPS_SYS(sys_lookup_dcookie, 3) MIPS_SYS(sys_epoll_create, 1) MIPS_SYS(sys_epoll_ctl , 4) MIPS_SYS(sys_epoll_wait , 3) /* 4250 */ MIPS_SYS(sys_remap_file_pages, 5) MIPS_SYS(sys_set_tid_address, 1) MIPS_SYS(sys_restart_syscall, 0) MIPS_SYS(sys_fadvise64_64, 7) MIPS_SYS(sys_statfs64 , 3) /* 4255 */ MIPS_SYS(sys_fstatfs64 , 2) MIPS_SYS(sys_timer_create, 3) MIPS_SYS(sys_timer_settime, 4) MIPS_SYS(sys_timer_gettime, 2) MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */ MIPS_SYS(sys_timer_delete, 1) MIPS_SYS(sys_clock_settime, 2) MIPS_SYS(sys_clock_gettime, 2) MIPS_SYS(sys_clock_getres, 2) MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */ MIPS_SYS(sys_tgkill , 3) MIPS_SYS(sys_utimes , 2) MIPS_SYS(sys_mbind , 4) MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */ MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */ MIPS_SYS(sys_mq_open , 4) MIPS_SYS(sys_mq_unlink , 1) MIPS_SYS(sys_mq_timedsend, 5) MIPS_SYS(sys_mq_timedreceive, 5) MIPS_SYS(sys_mq_notify , 2) /* 4275 */ MIPS_SYS(sys_mq_getsetattr, 3) MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */ MIPS_SYS(sys_waitid , 4) MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */ MIPS_SYS(sys_add_key , 5) MIPS_SYS(sys_request_key, 4) MIPS_SYS(sys_keyctl , 5) MIPS_SYS(sys_set_thread_area, 1) MIPS_SYS(sys_inotify_init, 0) MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */ MIPS_SYS(sys_inotify_rm_watch, 2) MIPS_SYS(sys_migrate_pages, 4) MIPS_SYS(sys_openat, 4) MIPS_SYS(sys_mkdirat, 3) MIPS_SYS(sys_mknodat, 4) /* 4290 */ MIPS_SYS(sys_fchownat, 5) MIPS_SYS(sys_futimesat, 3) MIPS_SYS(sys_fstatat64, 4) MIPS_SYS(sys_unlinkat, 3) MIPS_SYS(sys_renameat, 4) /* 4295 */ MIPS_SYS(sys_linkat, 5) MIPS_SYS(sys_symlinkat, 3) MIPS_SYS(sys_readlinkat, 4) MIPS_SYS(sys_fchmodat, 3) MIPS_SYS(sys_faccessat, 3) /* 4300 */ MIPS_SYS(sys_pselect6, 6) MIPS_SYS(sys_ppoll, 5) MIPS_SYS(sys_unshare, 1) MIPS_SYS(sys_splice, 4) MIPS_SYS(sys_sync_file_range, 7) /* 4305 */ MIPS_SYS(sys_tee, 4) MIPS_SYS(sys_vmsplice, 4) MIPS_SYS(sys_move_pages, 6) MIPS_SYS(sys_set_robust_list, 2) MIPS_SYS(sys_get_robust_list, 3) /* 4310 */ MIPS_SYS(sys_kexec_load, 4) MIPS_SYS(sys_getcpu, 3) MIPS_SYS(sys_epoll_pwait, 6) MIPS_SYS(sys_ioprio_set, 3) MIPS_SYS(sys_ioprio_get, 2) }; #undef MIPS_SYS void cpu_loop(CPUMIPSState *env) { target_siginfo_t info; int trapnr, ret; unsigned int syscall_num; for(;;) { trapnr = cpu_mips_exec(env); switch(trapnr) { case EXCP_SYSCALL: syscall_num = env->gpr[2] - 4000; env->PC += 4; if (syscall_num >= sizeof(mips_syscall_args)) { ret = -ENOSYS; } else { int nb_args; target_ulong sp_reg; target_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0; nb_args = mips_syscall_args[syscall_num]; sp_reg = env->gpr[29]; switch (nb_args) { /* these arguments are taken from the stack */ case 8: arg8 = tgetl(sp_reg + 28); case 7: arg7 = tgetl(sp_reg + 24); case 6: arg6 = tgetl(sp_reg + 20); case 5: arg5 = tgetl(sp_reg + 16); default: break; } ret = do_syscall(env, env->gpr[2], env->gpr[4], env->gpr[5], env->gpr[6], env->gpr[7], arg5, arg6/*, arg7, arg8*/); } if ((unsigned int)ret >= (unsigned int)(-1133)) { env->gpr[7] = 1; /* error flag */ ret = -ret; } else { env->gpr[7] = 0; /* error flag */ } env->gpr[2] = ret; break; case EXCP_TLBL: case EXCP_TLBS: case EXCP_CpU: case EXCP_RI: info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = 0; queue_signal(info.si_signo, &info); break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: // error: fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); abort(); } process_pending_signals(env); } } #endif #ifdef TARGET_SH4 void cpu_loop (CPUState *env) { int trapnr, ret; target_siginfo_t info; while (1) { trapnr = cpu_sh4_exec (env); switch (trapnr) { case 0x160: ret = do_syscall(env, env->gregs[3], env->gregs[4], env->gregs[5], env->gregs[6], env->gregs[7], env->gregs[0], 0); env->gregs[0] = ret; env->pc += 2; break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: printf ("Unhandled trap: 0x%x\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); exit (1); } process_pending_signals (env); } } #endif #ifdef TARGET_M68K void cpu_loop(CPUM68KState *env) { int trapnr; unsigned int n; target_siginfo_t info; TaskState *ts = env->opaque; for(;;) { trapnr = cpu_m68k_exec(env); switch(trapnr) { case EXCP_ILLEGAL: { if (ts->sim_syscalls) { uint16_t nr; nr = lduw(env->pc + 2); env->pc += 4; do_m68k_simcall(env, nr); } else { goto do_sigill; } } break; case EXCP_HALT_INSN: /* Semihosing syscall. */ env->pc += 4; do_m68k_semihosting(env, env->dregs[0]); break; case EXCP_LINEA: case EXCP_LINEF: case EXCP_UNSUPPORTED: do_sigill: info.si_signo = SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_ILLOPN; info._sifields._sigfault._addr = env->pc; queue_signal(info.si_signo, &info); break; case EXCP_TRAP0: { ts->sim_syscalls = 0; n = env->dregs[0]; env->pc += 2; env->dregs[0] = do_syscall(env, n, env->dregs[1], env->dregs[2], env->dregs[3], env->dregs[4], env->dregs[5], env->dregs[6]); } break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_ACCESS: { info.si_signo = SIGSEGV; info.si_errno = 0; /* XXX: check env->error_code */ info.si_code = TARGET_SEGV_MAPERR; info._sifields._sigfault._addr = env->mmu.ar; queue_signal(info.si_signo, &info); } break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); abort(); } process_pending_signals(env); } } #endif /* TARGET_M68K */ #ifdef TARGET_ALPHA void cpu_loop (CPUState *env) { int trapnr; target_siginfo_t info; while (1) { trapnr = cpu_alpha_exec (env); switch (trapnr) { case EXCP_RESET: fprintf(stderr, "Reset requested. Exit\n"); exit(1); break; case EXCP_MCHK: fprintf(stderr, "Machine check exception. Exit\n"); exit(1); break; case EXCP_ARITH: fprintf(stderr, "Arithmetic trap.\n"); exit(1); break; case EXCP_HW_INTERRUPT: fprintf(stderr, "External interrupt. Exit\n"); exit(1); break; case EXCP_DFAULT: fprintf(stderr, "MMU data fault\n"); exit(1); break; case EXCP_DTB_MISS_PAL: fprintf(stderr, "MMU data TLB miss in PALcode\n"); exit(1); break; case EXCP_ITB_MISS: fprintf(stderr, "MMU instruction TLB miss\n"); exit(1); break; case EXCP_ITB_ACV: fprintf(stderr, "MMU instruction access violation\n"); exit(1); break; case EXCP_DTB_MISS_NATIVE: fprintf(stderr, "MMU data TLB miss\n"); exit(1); break; case EXCP_UNALIGN: fprintf(stderr, "Unaligned access\n"); exit(1); break; case EXCP_OPCDEC: fprintf(stderr, "Invalid instruction\n"); exit(1); break; case EXCP_FEN: fprintf(stderr, "Floating-point not allowed\n"); exit(1); break; case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1): fprintf(stderr, "Call to PALcode\n"); call_pal(env, (trapnr >> 6) | 0x80); break; case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1): fprintf(stderr, "Privileged call to PALcode\n"); exit(1); break; case EXCP_DEBUG: { int sig; sig = gdb_handlesig (env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; default: printf ("Unhandled trap: 0x%x\n", trapnr); cpu_dump_state(env, stderr, fprintf, 0); exit (1); } process_pending_signals (env); } } #endif /* TARGET_ALPHA */ void usage(void) { printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2007 Fabrice Bellard\n" "usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] [-cpu model] program [arguments...]\n" "Linux CPU emulator (compiled for %s emulation)\n" "\n" "-h print this help\n" "-g port wait gdb connection to port\n" "-L path set the elf interpreter prefix (default=%s)\n" "-s size set the stack size in bytes (default=%ld)\n" "-cpu model select CPU (-cpu ? for list)\n" "-drop-ld-preload drop LD_PRELOAD for target process\n" "\n" "debug options:\n" #ifdef USE_CODE_COPY "-no-code-copy disable code copy acceleration\n" #endif "-d options activate log (logfile=%s)\n" "-p pagesize set the host page size to 'pagesize'\n", TARGET_ARCH, interp_prefix, x86_stack_size, DEBUG_LOGFILE); _exit(1); } /* XXX: currently only used for async signals (see signal.c) */ CPUState *global_env; /* used to free thread contexts */ TaskState *first_task_state; int main(int argc, char **argv) { const char *filename; const char *cpu_model; struct target_pt_regs regs1, *regs = ®s1; struct image_info info1, *info = &info1; TaskState ts1, *ts = &ts1; CPUState *env; int optind; const char *r; int gdbstub_port = 0; int drop_ld_preload = 0, environ_count = 0; char **target_environ, **wrk, **dst; if (argc <= 1) usage(); /* init debug */ cpu_set_log_filename(DEBUG_LOGFILE); cpu_model = NULL; optind = 1; for(;;) { if (optind >= argc) break; r = argv[optind]; if (r[0] != '-') break; optind++; r++; if (!strcmp(r, "-")) { break; } else if (!strcmp(r, "d")) { int mask; CPULogItem *item; if (optind >= argc) break; r = argv[optind++]; mask = cpu_str_to_log_mask(r); if (!mask) { printf("Log items (comma separated):\n"); for(item = cpu_log_items; item->mask != 0; item++) { printf("%-10s %s\n", item->name, item->help); } exit(1); } cpu_set_log(mask); } else if (!strcmp(r, "s")) { r = argv[optind++]; x86_stack_size = strtol(r, (char **)&r, 0); if (x86_stack_size <= 0) usage(); if (*r == 'M') x86_stack_size *= 1024 * 1024; else if (*r == 'k' || *r == 'K') x86_stack_size *= 1024; } else if (!strcmp(r, "L")) { interp_prefix = argv[optind++]; } else if (!strcmp(r, "p")) { qemu_host_page_size = atoi(argv[optind++]); if (qemu_host_page_size == 0 || (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { fprintf(stderr, "page size must be a power of two\n"); exit(1); } } else if (!strcmp(r, "g")) { gdbstub_port = atoi(argv[optind++]); } else if (!strcmp(r, "r")) { qemu_uname_release = argv[optind++]; } else if (!strcmp(r, "cpu")) { cpu_model = argv[optind++]; if (strcmp(cpu_model, "?") == 0) { #if defined(TARGET_PPC) ppc_cpu_list(stdout, &fprintf); #elif defined(TARGET_ARM) arm_cpu_list(); #elif defined(TARGET_MIPS) mips_cpu_list(stdout, &fprintf); #elif defined(TARGET_SPARC) sparc_cpu_list(stdout, &fprintf); #endif _exit(1); } } else if (!strcmp(r, "drop-ld-preload")) { drop_ld_preload = 1; } else #ifdef USE_CODE_COPY if (!strcmp(r, "no-code-copy")) { code_copy_enabled = 0; } else #endif { usage(); } } if (optind >= argc) usage(); filename = argv[optind]; /* Zero out regs */ memset(regs, 0, sizeof(struct target_pt_regs)); /* Zero out image_info */ memset(info, 0, sizeof(struct image_info)); /* Scan interp_prefix dir for replacement files. */ init_paths(interp_prefix); /* NOTE: we need to init the CPU at this stage to get qemu_host_page_size */ env = cpu_init(); global_env = env; wrk = environ; while (*(wrk++)) environ_count++; target_environ = malloc((environ_count + 1) * sizeof(char *)); if (!target_environ) abort(); for (wrk = environ, dst = target_environ; *wrk; wrk++) { if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11)) continue; *(dst++) = strdup(*wrk); } *dst = NULL; /* NULL terminate target_environ */ if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { printf("Error loading %s\n", filename); _exit(1); } for (wrk = target_environ; *wrk; wrk++) { free(*wrk); } free(target_environ); if (loglevel) { page_dump(logfile); fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk); fprintf(logfile, "end_code 0x%08lx\n" , info->end_code); fprintf(logfile, "start_code 0x%08lx\n" , info->start_code); fprintf(logfile, "start_data 0x%08lx\n" , info->start_data); fprintf(logfile, "end_data 0x%08lx\n" , info->end_data); fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack); fprintf(logfile, "brk 0x%08lx\n" , info->brk); fprintf(logfile, "entry 0x%08lx\n" , info->entry); } target_set_brk(info->brk); syscall_init(); signal_init(); /* build Task State */ memset(ts, 0, sizeof(TaskState)); env->opaque = ts; ts->used = 1; ts->info = info; env->user_mode_only = 1; #if defined(TARGET_I386) cpu_x86_set_cpl(env, 3); env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; env->hflags |= HF_PE_MASK; if (env->cpuid_features & CPUID_SSE) { env->cr[4] |= CR4_OSFXSR_MASK; env->hflags |= HF_OSFXSR_MASK; } /* flags setup : we activate the IRQs by default as in user mode */ env->eflags |= IF_MASK; /* linux register setup */ #if defined(TARGET_X86_64) env->regs[R_EAX] = regs->rax; env->regs[R_EBX] = regs->rbx; env->regs[R_ECX] = regs->rcx; env->regs[R_EDX] = regs->rdx; env->regs[R_ESI] = regs->rsi; env->regs[R_EDI] = regs->rdi; env->regs[R_EBP] = regs->rbp; env->regs[R_ESP] = regs->rsp; env->eip = regs->rip; #else env->regs[R_EAX] = regs->eax; env->regs[R_EBX] = regs->ebx; env->regs[R_ECX] = regs->ecx; env->regs[R_EDX] = regs->edx; env->regs[R_ESI] = regs->esi; env->regs[R_EDI] = regs->edi; env->regs[R_EBP] = regs->ebp; env->regs[R_ESP] = regs->esp; env->eip = regs->eip; #endif /* linux interrupt setup */ env->idt.base = h2g(idt_table); env->idt.limit = sizeof(idt_table) - 1; set_idt(0, 0); set_idt(1, 0); set_idt(2, 0); set_idt(3, 3); set_idt(4, 3); set_idt(5, 3); set_idt(6, 0); set_idt(7, 0); set_idt(8, 0); set_idt(9, 0); set_idt(10, 0); set_idt(11, 0); set_idt(12, 0); set_idt(13, 0); set_idt(14, 0); set_idt(15, 0); set_idt(16, 0); set_idt(17, 0); set_idt(18, 0); set_idt(19, 0); set_idt(0x80, 3); /* linux segment setup */ env->gdt.base = h2g(gdt_table); env->gdt.limit = sizeof(gdt_table) - 1; write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); cpu_x86_load_seg(env, R_CS, __USER_CS); cpu_x86_load_seg(env, R_DS, __USER_DS); cpu_x86_load_seg(env, R_ES, __USER_DS); cpu_x86_load_seg(env, R_SS, __USER_DS); cpu_x86_load_seg(env, R_FS, __USER_DS); cpu_x86_load_seg(env, R_GS, __USER_DS); /* This hack makes Wine work... */ env->segs[R_FS].selector = 0; #elif defined(TARGET_ARM) { int i; if (cpu_model == NULL) cpu_model = "arm926"; cpu_arm_set_model(env, cpu_model); cpsr_write(env, regs->uregs[16], 0xffffffff); for(i = 0; i < 16; i++) { env->regs[i] = regs->uregs[i]; } } #elif defined(TARGET_SPARC) { int i; const sparc_def_t *def; #ifdef TARGET_SPARC64 if (cpu_model == NULL) cpu_model = "TI UltraSparc II"; #else if (cpu_model == NULL) cpu_model = "Fujitsu MB86904"; #endif sparc_find_by_name(cpu_model, &def); if (def == NULL) { fprintf(stderr, "Unable to find Sparc CPU definition\n"); exit(1); } cpu_sparc_register(env, def); env->pc = regs->pc; env->npc = regs->npc; env->y = regs->y; for(i = 0; i < 8; i++) env->gregs[i] = regs->u_regs[i]; for(i = 0; i < 8; i++) env->regwptr[i] = regs->u_regs[i + 8]; } #elif defined(TARGET_PPC) { ppc_def_t *def; int i; /* Choose and initialise CPU */ if (cpu_model == NULL) cpu_model = "750"; ppc_find_by_name(cpu_model, &def); if (def == NULL) { cpu_abort(env, "Unable to find PowerPC CPU definition\n"); } cpu_ppc_register(env, def); for (i = 0; i < 32; i++) { if (i != 12 && i != 6 && i != 13) env->msr[i] = (regs->msr >> i) & 1; } #if defined(TARGET_PPC64) msr_sf = 1; #endif env->nip = regs->nip; for(i = 0; i < 32; i++) { env->gpr[i] = regs->gpr[i]; } } #elif defined(TARGET_M68K) { if (cpu_model == NULL) cpu_model = "any"; if (cpu_m68k_set_model(env, cpu_model)) { cpu_abort(cpu_single_env, "Unable to find m68k CPU definition\n"); } env->pc = regs->pc; env->dregs[0] = regs->d0; env->dregs[1] = regs->d1; env->dregs[2] = regs->d2; env->dregs[3] = regs->d3; env->dregs[4] = regs->d4; env->dregs[5] = regs->d5; env->dregs[6] = regs->d6; env->dregs[7] = regs->d7; env->aregs[0] = regs->a0; env->aregs[1] = regs->a1; env->aregs[2] = regs->a2; env->aregs[3] = regs->a3; env->aregs[4] = regs->a4; env->aregs[5] = regs->a5; env->aregs[6] = regs->a6; env->aregs[7] = regs->usp; env->sr = regs->sr; ts->sim_syscalls = 1; } #elif defined(TARGET_MIPS) { mips_def_t *def; int i; /* Choose and initialise CPU */ if (cpu_model == NULL) cpu_model = "24Kf"; mips_find_by_name(cpu_model, &def); if (def == NULL) cpu_abort(env, "Unable to find MIPS CPU definition\n"); cpu_mips_register(env, def); for(i = 0; i < 32; i++) { env->gpr[i] = regs->regs[i]; } env->PC = regs->cp0_epc; } #elif defined(TARGET_SH4) { int i; for(i = 0; i < 16; i++) { env->gregs[i] = regs->regs[i]; } env->pc = regs->pc; } #elif defined(TARGET_ALPHA) { int i; for(i = 0; i < 28; i++) { env->ir[i] = ((target_ulong *)regs)[i]; } env->ipr[IPR_USP] = regs->usp; env->ir[30] = regs->usp; env->pc = regs->pc; env->unique = regs->unique; } #else #error unsupported target CPU #endif #if defined(TARGET_ARM) || defined(TARGET_M68K) ts->stack_base = info->start_stack; ts->heap_base = info->brk; /* This will be filled in on the first SYS_HEAPINFO call. */ ts->heap_limit = 0; #endif if (gdbstub_port) { gdbserver_start (gdbstub_port); gdb_handlesig(env, 0); } cpu_loop(env); /* never exits */ return 0; }