Revision 1b6b029e linux-user/main.c
| b/linux-user/main.c | ||
|---|---|---|
| 104 | 104 |
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| 105 | 105 |
uint64_t gdt_table[6]; |
| 106 | 106 |
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void cpu_loop(struct CPUX86State *env) |
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{
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for(;;) {
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int err; |
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uint8_t *pc; |
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|
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err = cpu_x86_exec(env); |
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pc = env->seg_cache[R_CS].base + env->eip; |
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switch(err) {
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case EXCP0D_GPF: |
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if (pc[0] == 0xcd && pc[1] == 0x80) {
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/* syscall */ |
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env->eip += 2; |
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env->regs[R_EAX] = do_syscall(env, |
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env->regs[R_EAX], |
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env->regs[R_EBX], |
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env->regs[R_ECX], |
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env->regs[R_EDX], |
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env->regs[R_ESI], |
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env->regs[R_EDI], |
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env->regs[R_EBP]); |
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} else {
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goto trap_error; |
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} |
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break; |
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default: |
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trap_error: |
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fprintf(stderr, "0x%08lx: Unknown exception %d, aborting\n", |
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(long)pc, err); |
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abort(); |
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} |
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} |
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} |
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|
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void usage(void) |
| 108 | 142 |
{
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printf("gemu version " GEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
|
| ... | ... | |
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exit(1); |
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} |
| 115 | 149 |
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int main(int argc, char **argv) |
| 119 | 151 |
{
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| 120 | 152 |
const char *filename; |
| ... | ... | |
| 193 | 225 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
| 194 | 226 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
| 195 | 227 |
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for(;;) {
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int err; |
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uint8_t *pc; |
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|
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err = cpu_x86_exec(env); |
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pc = env->seg_cache[R_CS].base + env->eip; |
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switch(err) {
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case EXCP0D_GPF: |
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if (pc[0] == 0xcd && pc[1] == 0x80) {
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/* syscall */ |
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env->eip += 2; |
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env->regs[R_EAX] = do_syscall(env, |
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env->regs[R_EAX], |
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env->regs[R_EBX], |
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env->regs[R_ECX], |
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env->regs[R_EDX], |
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env->regs[R_ESI], |
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env->regs[R_EDI], |
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env->regs[R_EBP]); |
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} else {
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goto trap_error; |
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} |
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break; |
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default: |
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trap_error: |
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fprintf(stderr, "0x%08lx: Unknown exception %d, aborting\n", |
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(long)pc, err); |
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abort(); |
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} |
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} |
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cpu_loop(env); |
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/* never exits */ |
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| 226 | 230 |
return 0; |
| 227 | 231 |
} |
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