diff options
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 84 |
1 files changed, 76 insertions, 8 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 6c03d6f..889958b 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -63,6 +63,7 @@ void gemu_log(const char *fmt, ...) va_end(ap); } +#ifdef TARGET_I386 /***********************************************************/ /* CPUX86 core interface */ @@ -238,20 +239,76 @@ void cpu_loop(CPUX86State *env) process_pending_signals(env); } } +#endif + +#ifdef TARGET_ARM + +#define ARM_SYSCALL_BASE 0x900000 + +void cpu_loop(CPUARMState *env) +{ + int trapnr; + unsigned int n, insn; + target_siginfo_t info; + + for(;;) { + trapnr = cpu_arm_exec(env); + switch(trapnr) { + case EXCP_UDEF: + 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); + break; + case EXCP_SWI: + { + /* system call */ + insn = ldl((void *)(env->regs[15] - 4)); + n = insn & 0xffffff; + if (n >= ARM_SYSCALL_BASE) { + /* linux syscall */ + n -= ARM_SYSCALL_BASE; + env->regs[0] = do_syscall(env, + n, + env->regs[0], + env->regs[1], + env->regs[2], + env->regs[3], + env->regs[4], + 0); + } else { + goto error; + } + } + break; + default: + error: + fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", + trapnr); + cpu_arm_dump_state(env, stderr, 0); + abort(); + } + process_pending_signals(env); + } +} + +#endif void usage(void) { printf("qemu version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" "usage: qemu [-h] [-d] [-L path] [-s size] program [arguments...]\n" - "Linux x86 emulator\n" + "Linux CPU emulator (compiled for %s emulation)\n" "\n" "-h print this help\n" - "-L path set the x86 elf interpreter prefix (default=%s)\n" - "-s size set the x86 stack size in bytes (default=%ld)\n" + "-L path set the elf interpreter prefix (default=%s)\n" + "-s size set the stack size in bytes (default=%ld)\n" "\n" "debug options:\n" "-d activate log (logfile=%s)\n" "-p pagesize set the host page size to 'pagesize'\n", + TARGET_ARCH, interp_prefix, x86_stack_size, DEBUG_LOGFILE); @@ -259,7 +316,7 @@ void usage(void) } /* XXX: currently only used for async signals (see signal.c) */ -CPUX86State *global_env; +CPUState *global_env; /* used to free thread contexts */ TaskState *first_task_state; @@ -269,7 +326,7 @@ int main(int argc, char **argv) struct target_pt_regs regs1, *regs = ®s1; struct image_info info1, *info = &info1; TaskState ts1, *ts = &ts1; - CPUX86State *env; + CPUState *env; int optind; const char *r; @@ -337,7 +394,7 @@ int main(int argc, char **argv) /* NOTE: we need to init the CPU at this stage to get the host_page_size */ - env = cpu_x86_init(); + env = cpu_init(); if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { printf("Error loading %s\n", filename); @@ -353,8 +410,7 @@ int main(int argc, char **argv) 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, "esp 0x%08lx\n" , regs->esp); - fprintf(logfile, "eip 0x%08lx\n" , regs->eip); + fprintf(logfile, "entry 0x%08lx\n" , info->entry); } target_set_brk((char *)info->brk); @@ -368,6 +424,7 @@ int main(int argc, char **argv) env->opaque = ts; ts->used = 1; +#if defined(TARGET_I386) /* linux register setup */ env->regs[R_EAX] = regs->eax; env->regs[R_EBX] = regs->ebx; @@ -419,6 +476,17 @@ int main(int argc, char **argv) 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); +#elif defined(TARGET_ARM) + { + int i; + for(i = 0; i < 16; i++) { + env->regs[i] = regs->uregs[i]; + } + env->cpsr = regs->uregs[16]; + } +#else +#error unsupported target CPU +#endif cpu_loop(env); /* never exits */ |