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microblaze: User-mode emulation of hw-excp signals

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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
This commit is contained in:
Edgar E. Iglesias 2010-09-09 10:24:01 +02:00 committed by Edgar E. Iglesias
parent 97694c57d7
commit b76da7e376
1 changed files with 31 additions and 0 deletions
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31
linux-user/main.c
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@ -2233,6 +2233,37 @@ void cpu_loop (CPUState *env)
env->regs[3] = ret;
env->sregs[SR_PC] = env->regs[14];
break;
case EXCP_HW_EXCP:
env->regs[17] = env->sregs[SR_PC] + 4;
if (env->iflags & D_FLAG) {
env->sregs[SR_ESR] |= 1 << 12;
env->sregs[SR_PC] -= 4;
/* FIXME: if branch was immed, replay the imm aswell. */
}
env->iflags &= ~(IMM_FLAG | D_FLAG);
switch (env->sregs[SR_ESR] & 31) {
case ESR_EC_FPU:
info.si_signo = SIGFPE;
info.si_errno = 0;
if (env->sregs[SR_FSR] & FSR_IO) {
info.si_code = TARGET_FPE_FLTINV;
}
if (env->sregs[SR_FSR] & FSR_DZ) {
info.si_code = TARGET_FPE_FLTDIV;
}
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
break;
default:
printf ("Unhandled hw-exception: 0x%x\n",
env->sregs[SR_ESR] & 5);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
break;
}
break;
case EXCP_DEBUG:
{
int sig;