diff options
| -rw-r--r-- | target/i386/tcg/emit.c.inc | 14 | ||||
| -rw-r--r-- | tests/tcg/i386/test-i386-bmi2.c | 3 |
2 files changed, 10 insertions, 7 deletions
diff --git a/target/i386/tcg/emit.c.inc b/target/i386/tcg/emit.c.inc index e61ae9a2e9..0d01e13002 100644 --- a/target/i386/tcg/emit.c.inc +++ b/target/i386/tcg/emit.c.inc @@ -1147,20 +1147,20 @@ static void gen_BLSR(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode) static void gen_BZHI(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode) { MemOp ot = decode->op[0].ot; - TCGv bound; + TCGv bound = tcg_constant_tl(ot == MO_64 ? 63 : 31); + TCGv zero = tcg_constant_tl(0); + TCGv mone = tcg_constant_tl(-1); - tcg_gen_ext8u_tl(s->T1, cpu_regs[s->vex_v]); - bound = tcg_constant_tl(ot == MO_64 ? 63 : 31); + tcg_gen_ext8u_tl(s->T1, s->T1); /* * Note that since we're using BMILG (in order to get O * cleared) we need to store the inverse into C. */ - tcg_gen_setcond_tl(TCG_COND_LT, cpu_cc_src, s->T1, bound); - tcg_gen_movcond_tl(TCG_COND_GT, s->T1, s->T1, bound, bound, s->T1); + tcg_gen_setcond_tl(TCG_COND_LEU, cpu_cc_src, s->T1, bound); - tcg_gen_movi_tl(s->A0, -1); - tcg_gen_shl_tl(s->A0, s->A0, s->T1); + tcg_gen_shl_tl(s->A0, mone, s->T1); + tcg_gen_movcond_tl(TCG_COND_LEU, s->A0, s->T1, bound, s->A0, zero); tcg_gen_andc_tl(s->T0, s->T0, s->A0); gen_op_update1_cc(s); diff --git a/tests/tcg/i386/test-i386-bmi2.c b/tests/tcg/i386/test-i386-bmi2.c index 982d4abda4..0244df7987 100644 --- a/tests/tcg/i386/test-i386-bmi2.c +++ b/tests/tcg/i386/test-i386-bmi2.c @@ -123,6 +123,9 @@ int main(int argc, char *argv[]) { result = bzhiq(mask, 0x1f); assert(result == (mask & ~(-1 << 30))); + result = bzhiq(mask, 0x40); + assert(result == mask); + result = rorxq(0x2132435465768798, 8); assert(result == 0x9821324354657687); |