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MIPS FPU support in linux user emulation

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1967 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-06-14 13:37:55 +00:00
parent 83fcb51548
commit bc1ad2decd
1 changed files with 7 additions and 34 deletions
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41
linux-user/main.c
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@ -1327,7 +1327,6 @@ void cpu_loop(CPUMIPSState *env)
arg5,
arg6);
}
fail:
env->PC += 4;
if ((unsigned int)ret >= (unsigned int)(-1133)) {
env->gpr[7] = 1; /* error flag */
@ -1342,39 +1341,10 @@ void cpu_loop(CPUMIPSState *env)
break;
case EXCP_CpU:
case EXCP_RI:
{
uint32_t insn, op;
insn = tget32(env->PC);
op = insn >> 26;
// printf("insn=%08x op=%02x\n", insn, op);
/* XXX: totally dummy FP ops just to be able to launch
a few executables */
switch(op) {
case 0x31: /* LWC1 */
env->PC += 4;
break;
case 0x39: /* SWC1 */
env->PC += 4;
break;
case 0x11:
switch((insn >> 21) & 0x1f) {
case 0x02: /* CFC1 */
env->PC += 4;
break;
default:
goto sigill;
}
break;
default:
sigill:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = 0;
queue_signal(info.si_signo, &info);
break;
}
}
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = 0;
queue_signal(info.si_signo, &info);
break;
default:
// error:
@ -1700,6 +1670,9 @@ int main(int argc, char **argv)
env->gpr[i] = regs->regs[i];
}
env->PC = regs->cp0_epc;
#ifdef MIPS_USES_FPU
env->CP0_Status |= (1 << CP0St_CU1);
#endif
}
#elif defined(TARGET_SH4)
{