X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=cpu-exec.c;h=c7cd6078878ec3de34612111ee3ac1f6227e9301;hb=51a36cb2cb38bee2834de8add532cb66e4e6b884;hp=4adfb81aa1b30d89e7c3a3766b6eadd0ec170d9b;hpb=9df217a31741e21eb63a5e3ee8529391ba3762e3;p=qemu diff --git a/cpu-exec.c b/cpu-exec.c index 4adfb81..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 @@ -47,6 +47,9 @@ 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 @@ -74,8 +77,12 @@ void cpu_resume_from_signal(CPUState *env1, void *puc) 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 @@ -100,6 +107,11 @@ 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 @@ -115,7 +127,9 @@ int cpu_exec(CPUState *env1) env = env1; saved_T0 = T0; saved_T1 = T1; +#if defined(reg_T2) saved_T2 = T2; +#endif #ifdef __sparc__ /* we also save i7 because longjmp may not restore it */ asm volatile ("mov %%i7, %0" : "=r" (saved_i7)); @@ -164,7 +178,11 @@ int cpu_exec(CPUState *env1) 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 @@ -203,9 +221,10 @@ int cpu_exec(CPUState *env1) 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, - env->error_code); + do_interrupt(env->exception_index); #endif } env->exception_index = -1; @@ -285,10 +304,32 @@ int cpu_exec(CPUState *env1) env->interrupt_request &= ~CPU_INTERRUPT_TIMER; } } -#elif defined(TARGET_SPARC) - if (interrupt_request & CPU_INTERRUPT_HARD) { - do_interrupt(env->interrupt_index, 0); +#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; @@ -314,14 +355,30 @@ int cpu_exec(CPUState *env1) 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_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); @@ -330,9 +387,13 @@ int cpu_exec(CPUState *env1) cpu_dump_state(env, logfile, fprintf, 0); env->cpsr &= ~CACHED_CPSR_BITS; #elif defined(TARGET_SPARC) - cpu_dump_state (env, logfile, fprintf, 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 @@ -347,17 +408,27 @@ int cpu_exec(CPUState *env1) cs_base = env->segs[R_CS].base; pc = cs_base + env->eip; #elif defined(TARGET_ARM) - flags = env->thumb; + flags = env->thumb | (env->vfp.vec_len << 1) + | (env->vfp.vec_stride << 4); cs_base = 0; pc = env->regs[15]; #elif defined(TARGET_SPARC) - flags = 0; +#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 = 0; + 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 @@ -564,6 +635,15 @@ int cpu_exec(CPUState *env1) ); } } +#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 @@ -620,8 +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 @@ -630,7 +715,9 @@ 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; } @@ -871,6 +958,57 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, /* 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) +{ + 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 @@ -1108,6 +1246,40 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, &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 #error host CPU specific signal handler needed