X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=cpu-exec.c;h=c7cd6078878ec3de34612111ee3ac1f6227e9301;hb=51a36cb2cb38bee2834de8add532cb66e4e6b884;hp=5bbace345ffbc0781d54b6f863a39be19322b582;hpb=36bdbe5479cebb5765779a430d14daddddcab871;p=qemu diff --git a/cpu-exec.c b/cpu-exec.c index 5bbace3..c7cd607 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -1,7 +1,7 @@ /* * i386 emulator main execution loop * - * Copyright (c) 2003 Fabrice Bellard + * Copyright (c) 2003-2005 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -21,6 +21,20 @@ #include "exec.h" #include "disas.h" +#if !defined(CONFIG_SOFTMMU) +#undef EAX +#undef ECX +#undef EDX +#undef EBX +#undef ESP +#undef EBP +#undef ESI +#undef EDI +#undef EIP +#include +#include +#endif + int tb_invalidated_flag; //#define DEBUG_EXEC @@ -33,13 +47,42 @@ void cpu_loop_exit(void) longjmp(env->jmp_env, 1); } #endif +#ifndef TARGET_SPARC +#define reg_T2 +#endif + +/* exit the current TB from a signal handler. The host registers are + restored in a state compatible with the CPU emulator + */ +void cpu_resume_from_signal(CPUState *env1, void *puc) +{ +#if !defined(CONFIG_SOFTMMU) + struct ucontext *uc = puc; +#endif + + env = env1; + + /* XXX: restore cpu registers saved in host registers */ + +#if !defined(CONFIG_SOFTMMU) + if (puc) { + /* XXX: use siglongjmp ? */ + sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); + } +#endif + longjmp(env->jmp_env, 1); +} /* main execution loop */ int cpu_exec(CPUState *env1) { - int saved_T0, saved_T1, saved_T2; + int saved_T0, saved_T1; +#if defined(reg_T2) + int saved_T2; +#endif CPUState *saved_env; +#if defined(TARGET_I386) #ifdef reg_EAX int saved_EAX; #endif @@ -64,21 +107,29 @@ int cpu_exec(CPUState *env1) #ifdef reg_EDI int saved_EDI; #endif +#elif defined(TARGET_SPARC) +#if defined(reg_REGWPTR) + uint32_t *saved_regwptr; +#endif +#endif #ifdef __sparc__ int saved_i7, tmp_T0; #endif int code_gen_size, ret, interrupt_request; void (*gen_func)(void); TranslationBlock *tb, **ptb; - uint8_t *tc_ptr, *cs_base, *pc; + target_ulong cs_base, pc; + uint8_t *tc_ptr; unsigned int flags; /* first we save global registers */ + saved_env = env; + env = env1; saved_T0 = T0; saved_T1 = T1; +#if defined(reg_T2) saved_T2 = T2; - saved_env = env; - env = env1; +#endif #ifdef __sparc__ /* we also save i7 because longjmp may not restore it */ asm volatile ("mov %%i7, %0" : "=r" (saved_i7)); @@ -87,37 +138,30 @@ int cpu_exec(CPUState *env1) #if defined(TARGET_I386) #ifdef reg_EAX saved_EAX = EAX; - EAX = env->regs[R_EAX]; #endif #ifdef reg_ECX saved_ECX = ECX; - ECX = env->regs[R_ECX]; #endif #ifdef reg_EDX saved_EDX = EDX; - EDX = env->regs[R_EDX]; #endif #ifdef reg_EBX saved_EBX = EBX; - EBX = env->regs[R_EBX]; #endif #ifdef reg_ESP saved_ESP = ESP; - ESP = env->regs[R_ESP]; #endif #ifdef reg_EBP saved_EBP = EBP; - EBP = env->regs[R_EBP]; #endif #ifdef reg_ESI saved_ESI = ESI; - ESI = env->regs[R_ESI]; #endif #ifdef reg_EDI saved_EDI = EDI; - EDI = env->regs[R_EDI]; #endif - + + env_to_regs(); /* put eflags in CPU temporary format */ CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); DF = 1 - (2 * ((env->eflags >> 10) & 1)); @@ -130,9 +174,15 @@ int cpu_exec(CPUState *env1) env->CF = (psr >> 29) & 1; env->NZF = (psr & 0xc0000000) ^ 0x40000000; env->VF = (psr << 3) & 0x80000000; - env->cpsr = psr & ~0xf0000000; + env->QF = (psr >> 27) & 1; + env->cpsr = psr & ~CACHED_CPSR_BITS; } #elif defined(TARGET_SPARC) +#if defined(reg_REGWPTR) + saved_regwptr = REGWPTR; +#endif +#elif defined(TARGET_PPC) +#elif defined(TARGET_MIPS) #else #error unsupported target CPU #endif @@ -141,6 +191,7 @@ int cpu_exec(CPUState *env1) /* prepare setjmp context for exception handling */ for(;;) { if (setjmp(env->jmp_env) == 0) { + env->current_tb = NULL; /* if an exception is pending, we execute it here */ if (env->exception_index >= 0) { if (env->exception_index >= EXCP_INTERRUPT) { @@ -168,10 +219,42 @@ int cpu_exec(CPUState *env1) env->exception_is_int, env->error_code, env->exception_next_eip, 0); +#elif defined(TARGET_PPC) + do_interrupt(env); +#elif defined(TARGET_MIPS) + do_interrupt(env); +#elif defined(TARGET_SPARC) + do_interrupt(env->exception_index); #endif } env->exception_index = -1; + } +#ifdef USE_KQEMU + if (kqemu_is_ok(env) && env->interrupt_request == 0) { + int ret; + env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); + ret = kqemu_cpu_exec(env); + /* put eflags in CPU temporary format */ + CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + DF = 1 - (2 * ((env->eflags >> 10) & 1)); + CC_OP = CC_OP_EFLAGS; + env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + if (ret == 1) { + /* exception */ + longjmp(env->jmp_env, 1); + } else if (ret == 2) { + /* softmmu execution needed */ + } else { + if (env->interrupt_request != 0) { + /* hardware interrupt will be executed just after */ + } else { + /* otherwise, we restart */ + longjmp(env->jmp_env, 1); + } + } } +#endif + T0 = 0; /* force lookup of first TB */ for(;;) { #ifdef __sparc__ @@ -186,12 +269,12 @@ int cpu_exec(CPUState *env1) (env->eflags & IF_MASK) && !(env->hflags & HF_INHIBIT_IRQ_MASK)) { int intno; - intno = cpu_x86_get_pic_interrupt(env); - if (loglevel) { + env->interrupt_request &= ~CPU_INTERRUPT_HARD; + intno = cpu_get_pic_interrupt(env); + if (loglevel & CPU_LOG_TB_IN_ASM) { fprintf(logfile, "Servicing hardware INT=0x%02x\n", intno); } do_interrupt(intno, 0, 0, 0, 1); - env->interrupt_request &= ~CPU_INTERRUPT_HARD; /* ensure that no TB jump will be modified as the program flow was changed */ #ifdef __sparc__ @@ -200,7 +283,68 @@ int cpu_exec(CPUState *env1) T0 = 0; #endif } +#elif defined(TARGET_PPC) +#if 0 + if ((interrupt_request & CPU_INTERRUPT_RESET)) { + cpu_ppc_reset(env); + } #endif + if (msr_ee != 0) { + if ((interrupt_request & CPU_INTERRUPT_HARD)) { + /* Raise it */ + env->exception_index = EXCP_EXTERNAL; + env->error_code = 0; + do_interrupt(env); + env->interrupt_request &= ~CPU_INTERRUPT_HARD; + } else if ((interrupt_request & CPU_INTERRUPT_TIMER)) { + /* Raise it */ + env->exception_index = EXCP_DECR; + env->error_code = 0; + do_interrupt(env); + env->interrupt_request &= ~CPU_INTERRUPT_TIMER; + } + } +#elif defined(TARGET_MIPS) + if ((interrupt_request & CPU_INTERRUPT_HARD) && + (env->CP0_Status & (1 << CP0St_IE)) && + (env->CP0_Cause & 0x0000FF00) && + !(env->hflags & MIPS_HFLAG_EXL) && + !(env->hflags & MIPS_HFLAG_ERL) && + !(env->hflags & MIPS_HFLAG_DM)) { + /* Raise it */ + env->exception_index = EXCP_EXT_INTERRUPT; + env->error_code = 0; + do_interrupt(env); + env->interrupt_request &= ~CPU_INTERRUPT_HARD; + } +#elif defined(TARGET_SPARC) + if ((interrupt_request & CPU_INTERRUPT_HARD) && + (env->psret != 0)) { + int pil = env->interrupt_index & 15; + int type = env->interrupt_index & 0xf0; + + if (((type == TT_EXTINT) && + (pil == 15 || pil > env->psrpil)) || + type != TT_EXTINT) { + env->interrupt_request &= ~CPU_INTERRUPT_HARD; + do_interrupt(env->interrupt_index); + env->interrupt_index = 0; + } + } else if (interrupt_request & CPU_INTERRUPT_TIMER) { + //do_interrupt(0, 0, 0, 0, 0); + env->interrupt_request &= ~CPU_INTERRUPT_TIMER; + } +#endif + if (interrupt_request & CPU_INTERRUPT_EXITTB) { + env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; + /* ensure that no TB jump will be modified as + the program flow was changed */ +#ifdef __sparc__ + tmp_T0 = 0; +#else + T0 = 0; +#endif + } if (interrupt_request & CPU_INTERRUPT_EXIT) { env->interrupt_request &= ~CPU_INTERRUPT_EXIT; env->exception_index = EXCP_INTERRUPT; @@ -208,26 +352,48 @@ int cpu_exec(CPUState *env1) } } #ifdef DEBUG_EXEC - if (loglevel) { + if ((loglevel & CPU_LOG_EXEC)) { #if defined(TARGET_I386) /* restore flags in standard format */ +#ifdef reg_EAX env->regs[R_EAX] = EAX; +#endif +#ifdef reg_EBX env->regs[R_EBX] = EBX; +#endif +#ifdef reg_ECX env->regs[R_ECX] = ECX; +#endif +#ifdef reg_EDX env->regs[R_EDX] = EDX; +#endif +#ifdef reg_ESI env->regs[R_ESI] = ESI; +#endif +#ifdef reg_EDI env->regs[R_EDI] = EDI; +#endif +#ifdef reg_EBP env->regs[R_EBP] = EBP; +#endif +#ifdef reg_ESP env->regs[R_ESP] = ESP; +#endif env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); - cpu_x86_dump_state(env, logfile, X86_DUMP_CCOP); + cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); #elif defined(TARGET_ARM) env->cpsr = compute_cpsr(); - cpu_arm_dump_state(env, logfile, 0); - env->cpsr &= ~0xf0000000; + cpu_dump_state(env, logfile, fprintf, 0); + env->cpsr &= ~CACHED_CPSR_BITS; #elif defined(TARGET_SPARC) - cpu_sparc_dump_state (env, logfile, 0); + REGWPTR = env->regbase + (env->cwp * 16); + env->regwptr = REGWPTR; + cpu_dump_state(env, logfile, fprintf, 0); +#elif defined(TARGET_PPC) + cpu_dump_state(env, logfile, fprintf, 0); +#elif defined(TARGET_MIPS) + cpu_dump_state(env, logfile, fprintf, 0); #else #error unsupported target CPU #endif @@ -242,72 +408,142 @@ int cpu_exec(CPUState *env1) cs_base = env->segs[R_CS].base; pc = cs_base + env->eip; #elif defined(TARGET_ARM) - flags = 0; + flags = env->thumb | (env->vfp.vec_len << 1) + | (env->vfp.vec_stride << 4); cs_base = 0; - pc = (uint8_t *)env->regs[15]; + pc = env->regs[15]; #elif defined(TARGET_SPARC) - flags = 0; - cs_base = 0; - if (env->npc) { - env->pc = env->npc; - env->npc = 0; - } - pc = (uint8_t *) env->pc; +#ifdef TARGET_SPARC64 + flags = (env->pstate << 2) | ((env->lsu & (DMMU_E | IMMU_E)) >> 2); +#else + flags = env->psrs | ((env->mmuregs[0] & (MMU_E | MMU_NF)) << 1); +#endif + cs_base = env->npc; + pc = env->pc; +#elif defined(TARGET_PPC) + flags = (msr_pr << MSR_PR) | (msr_fp << MSR_FP) | + (msr_se << MSR_SE) | (msr_le << MSR_LE); + cs_base = 0; + pc = env->nip; +#elif defined(TARGET_MIPS) + flags = env->hflags & MIPS_HFLAGS_TMASK; + cs_base = NULL; + pc = env->PC; #else #error unsupported CPU #endif - tb = tb_find(&ptb, (unsigned long)pc, (unsigned long)cs_base, + tb = tb_find(&ptb, pc, cs_base, flags); if (!tb) { + TranslationBlock **ptb1; + unsigned int h; + target_ulong phys_pc, phys_page1, phys_page2, virt_page2; + + spin_lock(&tb_lock); + + tb_invalidated_flag = 0; + + regs_to_env(); /* XXX: do it just before cpu_gen_code() */ + + /* find translated block using physical mappings */ + phys_pc = get_phys_addr_code(env, pc); + phys_page1 = phys_pc & TARGET_PAGE_MASK; + phys_page2 = -1; + h = tb_phys_hash_func(phys_pc); + ptb1 = &tb_phys_hash[h]; + for(;;) { + tb = *ptb1; + if (!tb) + goto not_found; + if (tb->pc == pc && + tb->page_addr[0] == phys_page1 && + tb->cs_base == cs_base && + tb->flags == flags) { + /* check next page if needed */ + if (tb->page_addr[1] != -1) { + virt_page2 = (pc & TARGET_PAGE_MASK) + + TARGET_PAGE_SIZE; + phys_page2 = get_phys_addr_code(env, virt_page2); + if (tb->page_addr[1] == phys_page2) + goto found; + } else { + goto found; + } + } + ptb1 = &tb->phys_hash_next; + } + not_found: /* if no translated code available, then translate it now */ - tb = tb_alloc((unsigned long)pc); + tb = tb_alloc(pc); if (!tb) { /* flush must be done */ - tb_flush(); + tb_flush(env); /* cannot fail at this point */ - tb = tb_alloc((unsigned long)pc); + tb = tb_alloc(pc); /* don't forget to invalidate previous TB info */ - ptb = &tb_hash[tb_hash_func((unsigned long)pc)]; + ptb = &tb_hash[tb_hash_func(pc)]; T0 = 0; } tc_ptr = code_gen_ptr; tb->tc_ptr = tc_ptr; - tb->cs_base = (unsigned long)cs_base; + tb->cs_base = cs_base; tb->flags = flags; - tb_invalidated_flag = 0; cpu_gen_code(env, tb, CODE_GEN_MAX_SIZE, &code_gen_size); + code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); + + /* check next page if needed */ + virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; + phys_page2 = -1; + if ((pc & TARGET_PAGE_MASK) != virt_page2) { + phys_page2 = get_phys_addr_code(env, virt_page2); + } + tb_link_phys(tb, phys_pc, phys_page2); + + found: if (tb_invalidated_flag) { /* as some TB could have been invalidated because of memory exceptions while generating the code, we must recompute the hash index here */ - ptb = &tb_hash[tb_hash_func((unsigned long)pc)]; + ptb = &tb_hash[tb_hash_func(pc)]; while (*ptb != NULL) ptb = &(*ptb)->hash_next; T0 = 0; } + /* we add the TB in the virtual pc hash table */ *ptb = tb; tb->hash_next = NULL; tb_link(tb); - code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); spin_unlock(&tb_lock); } #ifdef DEBUG_EXEC - if (loglevel) { - fprintf(logfile, "Trace 0x%08lx [0x%08lx] %s\n", - (long)tb->tc_ptr, (long)tb->pc, - lookup_symbol((void *)tb->pc)); + if ((loglevel & CPU_LOG_EXEC)) { + fprintf(logfile, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", + (long)tb->tc_ptr, tb->pc, + lookup_symbol(tb->pc)); } #endif #ifdef __sparc__ T0 = tmp_T0; #endif /* see if we can patch the calling TB. */ - if (T0 != 0) { + { + if (T0 != 0 +#if defined(TARGET_I386) && defined(USE_CODE_COPY) + && (tb->cflags & CF_CODE_COPY) == + (((TranslationBlock *)(T0 & ~3))->cflags & CF_CODE_COPY) +#endif + ) { spin_lock(&tb_lock); - tb_add_jump((TranslationBlock *)(T0 & ~3), T0 & 3, tb); + tb_add_jump((TranslationBlock *)(long)(T0 & ~3), T0 & 3, tb); +#if defined(USE_CODE_COPY) + /* propagates the FP use info */ + ((TranslationBlock *)(T0 & ~3))->cflags |= + (tb->cflags & CF_FP_USED); +#endif spin_unlock(&tb_lock); } + } tc_ptr = tb->tc_ptr; env->current_tb = tb; /* execute the generated code */ @@ -325,6 +561,89 @@ int cpu_exec(CPUState *env1) : /* no outputs */ : "r" (gen_func) : "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14"); +#elif defined(TARGET_I386) && defined(USE_CODE_COPY) +{ + if (!(tb->cflags & CF_CODE_COPY)) { + if ((tb->cflags & CF_FP_USED) && env->native_fp_regs) { + save_native_fp_state(env); + } + gen_func(); + } else { + if ((tb->cflags & CF_FP_USED) && !env->native_fp_regs) { + restore_native_fp_state(env); + } + /* we work with native eflags */ + CC_SRC = cc_table[CC_OP].compute_all(); + CC_OP = CC_OP_EFLAGS; + asm(".globl exec_loop\n" + "\n" + "debug1:\n" + " pushl %%ebp\n" + " fs movl %10, %9\n" + " fs movl %11, %%eax\n" + " andl $0x400, %%eax\n" + " fs orl %8, %%eax\n" + " pushl %%eax\n" + " popf\n" + " fs movl %%esp, %12\n" + " fs movl %0, %%eax\n" + " fs movl %1, %%ecx\n" + " fs movl %2, %%edx\n" + " fs movl %3, %%ebx\n" + " fs movl %4, %%esp\n" + " fs movl %5, %%ebp\n" + " fs movl %6, %%esi\n" + " fs movl %7, %%edi\n" + " fs jmp *%9\n" + "exec_loop:\n" + " fs movl %%esp, %4\n" + " fs movl %12, %%esp\n" + " fs movl %%eax, %0\n" + " fs movl %%ecx, %1\n" + " fs movl %%edx, %2\n" + " fs movl %%ebx, %3\n" + " fs movl %%ebp, %5\n" + " fs movl %%esi, %6\n" + " fs movl %%edi, %7\n" + " pushf\n" + " popl %%eax\n" + " movl %%eax, %%ecx\n" + " andl $0x400, %%ecx\n" + " shrl $9, %%ecx\n" + " andl $0x8d5, %%eax\n" + " fs movl %%eax, %8\n" + " movl $1, %%eax\n" + " subl %%ecx, %%eax\n" + " fs movl %%eax, %11\n" + " fs movl %9, %%ebx\n" /* get T0 value */ + " popl %%ebp\n" + : + : "m" (*(uint8_t *)offsetof(CPUState, regs[0])), + "m" (*(uint8_t *)offsetof(CPUState, regs[1])), + "m" (*(uint8_t *)offsetof(CPUState, regs[2])), + "m" (*(uint8_t *)offsetof(CPUState, regs[3])), + "m" (*(uint8_t *)offsetof(CPUState, regs[4])), + "m" (*(uint8_t *)offsetof(CPUState, regs[5])), + "m" (*(uint8_t *)offsetof(CPUState, regs[6])), + "m" (*(uint8_t *)offsetof(CPUState, regs[7])), + "m" (*(uint8_t *)offsetof(CPUState, cc_src)), + "m" (*(uint8_t *)offsetof(CPUState, tmp0)), + "a" (gen_func), + "m" (*(uint8_t *)offsetof(CPUState, df)), + "m" (*(uint8_t *)offsetof(CPUState, saved_esp)) + : "%ecx", "%edx" + ); + } +} +#elif defined(__ia64) + struct fptr { + void *ip; + void *gp; + } fp; + + fp.ip = tc_ptr; + fp.gp = code_gen_buffer + 2 * (1 << 20); + (*(void (*)(void)) &fp)(); #else gen_func(); #endif @@ -340,11 +659,17 @@ int cpu_exec(CPUState *env1) #endif } } else { + env_to_regs(); } } /* for(;;) */ #if defined(TARGET_I386) +#if defined(USE_CODE_COPY) + if (env->native_fp_regs) { + save_native_fp_state(env); + } +#endif /* restore flags in standard format */ env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); @@ -375,7 +700,13 @@ int cpu_exec(CPUState *env1) #endif #elif defined(TARGET_ARM) env->cpsr = compute_cpsr(); + /* XXX: Save/restore host fpu exception state?. */ #elif defined(TARGET_SPARC) +#if defined(reg_REGWPTR) + REGWPTR = saved_regwptr; +#endif +#elif defined(TARGET_PPC) +#elif defined(TARGET_MIPS) #else #error unsupported target CPU #endif @@ -384,11 +715,26 @@ int cpu_exec(CPUState *env1) #endif T0 = saved_T0; T1 = saved_T1; +#if defined(reg_T2) T2 = saved_T2; +#endif env = saved_env; return ret; } +/* must only be called from the generated code as an exception can be + generated */ +void tb_invalidate_page_range(target_ulong start, target_ulong end) +{ + /* XXX: cannot enable it yet because it yields to MMU exception + where NIP != read address on PowerPC */ +#if 0 + target_ulong phys_addr; + phys_addr = get_phys_addr_code(env, start); + tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0); +#endif +} + #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY) void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) @@ -400,9 +746,9 @@ void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { selector &= 0xffff; cpu_x86_load_seg_cache(env, seg_reg, selector, - (uint8_t *)(selector << 4), 0xffff, 0); + (selector << 4), 0xffff, 0); } else { - load_seg(seg_reg, selector, 0); + load_seg(seg_reg, selector); } env = saved_env; } @@ -414,7 +760,7 @@ void cpu_x86_fsave(CPUX86State *s, uint8_t *ptr, int data32) saved_env = env; env = s; - helper_fsave(ptr, data32); + helper_fsave((target_ulong)ptr, data32); env = saved_env; } @@ -426,24 +772,14 @@ void cpu_x86_frstor(CPUX86State *s, uint8_t *ptr, int data32) saved_env = env; env = s; - helper_frstor(ptr, data32); + helper_frstor((target_ulong)ptr, data32); env = saved_env; } #endif /* TARGET_I386 */ -#undef EAX -#undef ECX -#undef EDX -#undef EBX -#undef ESP -#undef EBP -#undef ESI -#undef EDI -#undef EIP -#include -#include +#if !defined(CONFIG_SOFTMMU) #if defined(TARGET_I386) @@ -452,7 +788,8 @@ void cpu_x86_frstor(CPUX86State *s, uint8_t *ptr, int data32) write caused the exception and otherwise 0'. 'old_set' is the signal set which should be restored */ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, - int is_write, sigset_t *old_set) + int is_write, sigset_t *old_set, + void *puc) { TranslationBlock *tb; int ret; @@ -460,13 +797,14 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, if (cpu_single_env) env = cpu_single_env; /* XXX: find a correct solution for multithread */ #if defined(DEBUG_SIGNAL) - printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", - pc, address, is_write, *(unsigned long *)old_set); + qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); #endif /* XXX: locking issue */ - if (is_write && page_unprotect(address)) { + if (is_write && page_unprotect(address, pc, puc)) { return 1; } + /* see if it is an MMU fault */ ret = cpu_x86_handle_mmu_fault(env, address, is_write, ((env->hflags & HF_CPL_MASK) == 3), 0); @@ -479,7 +817,7 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, if (tb) { /* the PC is inside the translated code. It means that we have a virtual CPU fault */ - cpu_restore_state(tb, env, pc); + cpu_restore_state(tb, env, pc, puc); } if (ret == 1) { #if 0 @@ -493,8 +831,7 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, } else { /* activate soft MMU for this block */ env->hflags |= HF_SOFTMMU_MASK; - sigprocmask(SIG_SETMASK, old_set, NULL); - cpu_loop_exit(); + cpu_resume_from_signal(env, puc); } /* never comes here */ return 1; @@ -502,29 +839,209 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, #elif defined(TARGET_ARM) static inline int handle_cpu_signal(unsigned long pc, unsigned long address, - int is_write, sigset_t *old_set) + int is_write, sigset_t *old_set, + void *puc) { - /* XXX: do more */ - return 0; + TranslationBlock *tb; + int ret; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ +#if defined(DEBUG_SIGNAL) + printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); +#endif + /* XXX: locking issue */ + if (is_write && page_unprotect(address, pc, puc)) { + return 1; + } + /* see if it is an MMU fault */ + ret = cpu_arm_handle_mmu_fault(env, address, is_write, 1, 0); + if (ret < 0) + return 0; /* not an MMU fault */ + if (ret == 0) + return 1; /* the MMU fault was handled without causing real CPU fault */ + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, puc); + } + /* we restore the process signal mask as the sigreturn should + do it (XXX: use sigsetjmp) */ + sigprocmask(SIG_SETMASK, old_set, NULL); + cpu_loop_exit(); } #elif defined(TARGET_SPARC) static inline int handle_cpu_signal(unsigned long pc, unsigned long address, - int is_write, sigset_t *old_set) + int is_write, sigset_t *old_set, + void *puc) +{ + TranslationBlock *tb; + int ret; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ +#if defined(DEBUG_SIGNAL) + printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); +#endif + /* XXX: locking issue */ + if (is_write && page_unprotect(address, pc, puc)) { + return 1; + } + /* see if it is an MMU fault */ + ret = cpu_sparc_handle_mmu_fault(env, address, is_write, 1, 0); + if (ret < 0) + return 0; /* not an MMU fault */ + if (ret == 0) + return 1; /* the MMU fault was handled without causing real CPU fault */ + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, puc); + } + /* we restore the process signal mask as the sigreturn should + do it (XXX: use sigsetjmp) */ + sigprocmask(SIG_SETMASK, old_set, NULL); + cpu_loop_exit(); +} +#elif defined (TARGET_PPC) +static inline int handle_cpu_signal(unsigned long pc, unsigned long address, + int is_write, sigset_t *old_set, + void *puc) +{ + TranslationBlock *tb; + int ret; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ +#if defined(DEBUG_SIGNAL) + printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); +#endif + /* XXX: locking issue */ + if (is_write && page_unprotect(address, pc, puc)) { + return 1; + } + + /* see if it is an MMU fault */ + ret = cpu_ppc_handle_mmu_fault(env, address, is_write, msr_pr, 0); + if (ret < 0) + return 0; /* not an MMU fault */ + if (ret == 0) + return 1; /* the MMU fault was handled without causing real CPU fault */ + + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, puc); + } + if (ret == 1) { +#if 0 + printf("PF exception: NIP=0x%08x error=0x%x %p\n", + env->nip, env->error_code, tb); +#endif + /* we restore the process signal mask as the sigreturn should + do it (XXX: use sigsetjmp) */ + sigprocmask(SIG_SETMASK, old_set, NULL); + do_raise_exception_err(env->exception_index, env->error_code); + } else { + /* activate soft MMU for this block */ + cpu_resume_from_signal(env, puc); + } + /* never comes here */ + return 1; +} + +#elif defined (TARGET_MIPS) +static inline int handle_cpu_signal(unsigned long pc, unsigned long address, + int is_write, sigset_t *old_set, + void *puc) { - return 0; + TranslationBlock *tb; + int ret; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ +#if defined(DEBUG_SIGNAL) + printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); +#endif + /* XXX: locking issue */ + if (is_write && page_unprotect(address, pc, puc)) { + return 1; + } + + /* see if it is an MMU fault */ + ret = cpu_ppc_handle_mmu_fault(env, address, is_write, msr_pr, 0); + if (ret < 0) + return 0; /* not an MMU fault */ + if (ret == 0) + return 1; /* the MMU fault was handled without causing real CPU fault */ + + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, puc); + } + if (ret == 1) { +#if 0 + printf("PF exception: NIP=0x%08x error=0x%x %p\n", + env->nip, env->error_code, tb); +#endif + /* we restore the process signal mask as the sigreturn should + do it (XXX: use sigsetjmp) */ + sigprocmask(SIG_SETMASK, old_set, NULL); + do_raise_exception_err(env->exception_index, env->error_code); + } else { + /* activate soft MMU for this block */ + cpu_resume_from_signal(env, puc); + } + /* never comes here */ + return 1; } + #else #error unsupported target CPU #endif #if defined(__i386__) +#if defined(USE_CODE_COPY) +static void cpu_send_trap(unsigned long pc, int trap, + struct ucontext *uc) +{ + TranslationBlock *tb; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, uc); + } + sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); + raise_exception_err(trap, env->error_code); +} +#endif + int cpu_signal_handler(int host_signum, struct siginfo *info, void *puc) { struct ucontext *uc = puc; unsigned long pc; - + int trapno; + #ifndef REG_EIP /* for glibc 2.1 */ #define REG_EIP EIP @@ -532,34 +1049,105 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, #define REG_TRAPNO TRAPNO #endif pc = uc->uc_mcontext.gregs[REG_EIP]; + trapno = uc->uc_mcontext.gregs[REG_TRAPNO]; +#if defined(TARGET_I386) && defined(USE_CODE_COPY) + if (trapno == 0x00 || trapno == 0x05) { + /* send division by zero or bound exception */ + cpu_send_trap(pc, trapno, uc); + return 1; + } else +#endif + return handle_cpu_signal(pc, (unsigned long)info->si_addr, + trapno == 0xe ? + (uc->uc_mcontext.gregs[REG_ERR] >> 1) & 1 : 0, + &uc->uc_sigmask, puc); +} + +#elif defined(__x86_64__) + +int cpu_signal_handler(int host_signum, struct siginfo *info, + void *puc) +{ + struct ucontext *uc = puc; + unsigned long pc; + + pc = uc->uc_mcontext.gregs[REG_RIP]; return handle_cpu_signal(pc, (unsigned long)info->si_addr, uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe ? (uc->uc_mcontext.gregs[REG_ERR] >> 1) & 1 : 0, - &uc->uc_sigmask); + &uc->uc_sigmask, puc); } -#elif defined(__powerpc) +#elif defined(__powerpc__) + +/*********************************************************************** + * signal context platform-specific definitions + * From Wine + */ +#ifdef linux +/* All Registers access - only for local access */ +# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name) +/* Gpr Registers access */ +# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context) +# define IAR_sig(context) REG_sig(nip, context) /* Program counter */ +# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ +# define CTR_sig(context) REG_sig(ctr, context) /* Count register */ +# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ +# define LR_sig(context) REG_sig(link, context) /* Link register */ +# define CR_sig(context) REG_sig(ccr, context) /* Condition register */ +/* Float Registers access */ +# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) +# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) +/* Exception Registers access */ +# define DAR_sig(context) REG_sig(dar, context) +# define DSISR_sig(context) REG_sig(dsisr, context) +# define TRAP_sig(context) REG_sig(trap, context) +#endif /* linux */ + +#ifdef __APPLE__ +# include +typedef struct ucontext SIGCONTEXT; +/* All Registers access - only for local access */ +# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name) +# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name) +# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name) +# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name) +/* Gpr Registers access */ +# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) +# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ +# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ +# define CTR_sig(context) REG_sig(ctr, context) +# define XER_sig(context) REG_sig(xer, context) /* Link register */ +# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ +# define CR_sig(context) REG_sig(cr, context) /* Condition register */ +/* Float Registers access */ +# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context) +# define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) +/* Exception Registers access */ +# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ +# define DSISR_sig(context) EXCEPREG_sig(dsisr, context) +# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ +#endif /* __APPLE__ */ int cpu_signal_handler(int host_signum, struct siginfo *info, void *puc) { struct ucontext *uc = puc; - struct pt_regs *regs = uc->uc_mcontext.regs; unsigned long pc; int is_write; - pc = regs->nip; + pc = IAR_sig(uc); is_write = 0; #if 0 /* ppc 4xx case */ - if (regs->dsisr & 0x00800000) + if (DSISR_sig(uc) & 0x00800000) is_write = 1; #else - if (regs->trap != 0x400 && (regs->dsisr & 0x02000000)) + if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) is_write = 1; #endif return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask); + is_write, &uc->uc_sigmask, puc); } #elif defined(__alpha__) @@ -589,7 +1177,7 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, } return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask); + is_write, &uc->uc_sigmask, puc); } #elif defined(__sparc__) @@ -621,7 +1209,7 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, } } return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, sigmask); + is_write, sigmask, NULL); } #elif defined(__arm__) @@ -655,7 +1243,41 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, is_write = 0; return handle_cpu_signal(pc, (unsigned long)info->si_addr, is_write, - &uc->uc_sigmask); + &uc->uc_sigmask, puc); +} + +#elif defined(__ia64) + +#ifndef __ISR_VALID + /* This ought to be in ... */ +# define __ISR_VALID 1 +# define si_flags _sifields._sigfault._si_pad0 +#endif + +int cpu_signal_handler(int host_signum, struct siginfo *info, void *puc) +{ + struct ucontext *uc = puc; + unsigned long ip; + int is_write = 0; + + ip = uc->uc_mcontext.sc_ip; + switch (host_signum) { + case SIGILL: + case SIGFPE: + case SIGSEGV: + case SIGBUS: + case SIGTRAP: + if (info->si_code && (info->si_flags & __ISR_VALID)) + /* ISR.W (write-access) is bit 33: */ + is_write = (info->si_isr >> 33) & 1; + break; + + default: + break; + } + return handle_cpu_signal(ip, (unsigned long)info->si_addr, + is_write, + &uc->uc_sigmask, puc); } #else @@ -663,3 +1285,5 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, #error host CPU specific signal handler needed #endif + +#endif /* !defined(CONFIG_SOFTMMU) */