On 11/04/2015 10:24 PM, Eduardo Habkost wrote:
Accept the clwb instruction (66 0F AE /6) if its corresponding feature flag is enabled on CPUID[7].Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> --- target-i386/translate.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/target-i386/translate.c b/target-i386/translate.c index b400d24..bac1685 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -7716,10 +7716,21 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } break; case 5: /* lfence */ - case 6: /* mfence */ if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2)) goto illegal_op; break; + case 6: /* mfence/clwb */ + if (s->prefix & PREFIX_DATA) { + /* clwb */ + if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB)) + goto illegal_op; + gen_lea_modrm(env, s, modrm);
You should use gen_nop_modrm here, since we're not going to do anything with the address. Otherwise,
Reviewed-by: Richard Henderson <r...@twiddle.net> r~ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
