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microblaze: Trap if QEMU finds an unknown insns. 

If PVR settings enable illegal insn trap, trap when QEMU finds an
insn it knows nothing about.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2009-09-11 10:38:31 +02:00
parent a12f650781
commit 02b33596d0
1 changed files with 6 additions and 0 deletions
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6
target-microblaze/translate.c
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@ -1144,6 +1144,12 @@ static void dec_fpu(DisasContext *dc)
static void dec_null(DisasContext *dc)
{
if ((dc->tb_flags & MSR_EE_FLAG)
&& (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
t_gen_raise_exception(dc, EXCP_HW_EXCP);
return;
}
qemu_log ("unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode);
dc->abort_at_next_insn = 1;
}