diff options
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 8c5557739d..20cb0df62e 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -182,6 +182,7 @@ int cpu_exec(CPUState *env1) saved_regwptr = REGWPTR; #endif #elif defined(TARGET_PPC) +#elif defined(TARGET_MIPS) #else #error unsupported target CPU #endif @@ -220,6 +221,8 @@ 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); #endif @@ -301,6 +304,19 @@ int cpu_exec(CPUState *env1) 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 & 0x0000FC00) && + !(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)) { @@ -376,6 +392,8 @@ int cpu_exec(CPUState *env1) 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 @@ -407,6 +425,10 @@ int cpu_exec(CPUState *env1) (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 @@ -684,6 +706,7 @@ int cpu_exec(CPUState *env1) REGWPTR = saved_regwptr; #endif #elif defined(TARGET_PPC) +#elif defined(TARGET_MIPS) #else #error unsupported target CPU #endif @@ -935,6 +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 |