diff options
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 5b751541ee..aa5b758d64 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -324,6 +324,127 @@ void cpu_loop (CPUSPARCState *env) #endif +#ifdef TARGET_PPC + +void cpu_loop(CPUPPCState *env) +{ + int trapnr; + target_siginfo_t info; + + for(;;) { + trapnr = cpu_ppc_exec(env); + switch(trapnr) { + case EXCP_NONE: + case EXCP_INTERRUPT: + case EXCP_MTMSR: /* mtmsr instruction: */ + case EXCP_BRANCH: /* branch instruction */ + /* Single step mode */ + break; +#if 0 + case EXCP_RESET: /* System reset */ + fprintf(stderr, "RESET asked... Stop emulation\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); +#endif + case EXCP_MACHINE_CHECK: /* Machine check exception */ + fprintf(stderr, "Machine check exeption... " + "See you in kernel code !\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + case EXCP_DSI: /* Impossible memory access */ + fprintf(stderr, "Invalid memory access\n"); + info.si_signo = SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->nip; + queue_signal(info.si_signo, &info); + break; + case EXCP_ISI: /* Impossible instruction fetch */ + fprintf(stderr, "Invalid instruction fetch\n"); + info.si_signo = SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->nip; + queue_signal(info.si_signo, &info); + break; + case EXCP_EXTERNAL: /* External interruption */ + fprintf(stderr, "External access exeption\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + case EXCP_ALIGN: /* Alignment exception */ + fprintf(stderr, "Alignment exception\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + case EXCP_PROGRAM: /* Program exception */ + fprintf(stderr, "Program exception\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + break; + /* Trap */ + case EXCP_TRAP: /* Trap */ + case EXCP_TRACE: /* Trace exception (optional) */ + info.si_signo = SIGTRAP; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->nip; + queue_signal(info.si_signo, &info); + break; + /* Invalid instruction */ + case EXCP_INVAL: + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->nip; + queue_signal(info.si_signo, &info); + break; + /* Privileged instruction */ + case EXCP_PRIV: /* Privileged instruction */ + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->nip; + queue_signal(info.si_signo, &info); + break; + case EXCP_NO_FP: /* No floating point */ + case EXCP_DECR: /* Decrementer exception */ + case EXCP_RESA: /* Implementation specific */ + case EXCP_RESB: /* Implementation specific */ + case EXCP_FP_ASSIST: /* Floating-point assist (optional) */ + fprintf(stderr, "Misc expt...\n"); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + + case EXCP_SYSCALL: + { + uint32_t ret; + /* system call */ + /* WARNING: + * PPC ABI uses overflow flag in cr0 to signal an error + * in syscalls. + */ + 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; + break; + } + default: +// error: + fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", + trapnr); + cpu_ppc_dump_state(env, stderr, 0); + abort(); + } + process_pending_signals(env); + } +} +#endif + void usage(void) { printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" @@ -517,6 +638,16 @@ int main(int argc, char **argv) #elif defined(TARGET_SPARC) env->pc = regs->u_regs[0]; env->regwptr[6] = regs->u_regs[1]-0x40; +#elif defined(TARGET_PPC) + { + int i; + for (i = 0; i < 32; i++) + env->msr[i] = (regs->msr >> i) & 1; + env->nip = regs->nip; + for(i = 0; i < 32; i++) { + env->gpr[i] = regs->gpr[i]; + } + } #else #error unsupported target CPU #endif |