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target-m68k: Do not cpu_abort on undefined insns

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Report this properly via exception and, importantly, allow
the disassembler the chance to tell us what insn is not handled.

Backports commit 72d2e4b6a437f11f97d3138f6b2ec177b78210c7 from qemu
This commit is contained in:
Richard Henderson 2018-03-01 12:02:34 -05:00 committed by Lioncash
parent 90b0b6d867
commit 0c00b036be
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 5 additions and 3 deletions
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8
qemu/target-m68k/translate.c
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@ -1229,10 +1229,12 @@ DISAS_INSN(undef_fpu)
DISAS_INSN(undef)
{
M68kCPU *cpu = m68k_env_get_cpu(env);
/* ??? This is both instructions that are as yet unimplemented
for the 680x0 series, as well as those that are implemented
but actually illegal for CPU32 or pre-68020. */
qemu_log_mask(LOG_UNIMP, "Illegal instruction: %04x @ %08x",
insn, s->pc - 2);
gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
cpu_abort(CPU(cpu), "Illegal instruction: %04x @ %08x", insn, s->pc - 2);
}
DISAS_INSN(mulw)