diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-01-23 17:01:10 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-02-18 15:52:32 -0800 |
| commit | 02ea1e6b4fab803551bbea47eea29bc7709ba008 (patch) | |
| tree | 105f95d5a75033f0ddc3de29ad67d3e91f7d3306 /target-i386 | |
| parent | bc4b43dc2fe88712ad921c05fc1ab9ebc4cb6778 (diff) | |
target-i386: Implement BZHI
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/translate.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 2322d5c838..2bb8d9f8c3 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -4072,6 +4072,33 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b, } break; + case 0x0f5: /* bzhi Gy, Ey, By */ + if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2) + || !(s->prefix & PREFIX_VEX) + || s->vex_l != 0) { + goto illegal_op; + } + ot = s->dflag == 2 ? OT_QUAD : OT_LONG; + gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0); + tcg_gen_ext8u_tl(cpu_T[1], cpu_regs[s->vex_v]); + { + TCGv bound = tcg_const_tl(ot == OT_QUAD ? 63 : 31); + /* 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, + cpu_T[1], bound); + tcg_gen_movcond_tl(TCG_COND_GT, cpu_T[1], cpu_T[1], + bound, bound, cpu_T[1]); + tcg_temp_free(bound); + } + tcg_gen_movi_tl(cpu_A0, -1); + tcg_gen_shl_tl(cpu_A0, cpu_A0, cpu_T[1]); + tcg_gen_andc_tl(cpu_T[0], cpu_T[0], cpu_A0); + gen_op_mov_reg_T0(ot, reg); + gen_op_update1_cc(); + set_cc_op(s, CC_OP_BMILGB + ot); + break; + case 0x0f3: case 0x1f3: case 0x2f3: |