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target-i386: Implement SHLX, SARX, SHRX

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-01-23 18:12:13 -08:00
parent 0592f74a75
commit 4a554890e4
1 changed files with 31 additions and 0 deletions
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31
target-i386/translate.c
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@ -4174,6 +4174,37 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
gen_helper_pext(cpu_regs[reg], cpu_T[0], cpu_T[1]);
break;
case 0x1f7: /* shlx Gy, Ey, By */
case 0x2f7: /* sarx Gy, Ey, By */
case 0x3f7: /* shrx 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);
if (ot == OT_QUAD) {
tcg_gen_andi_tl(cpu_T[1], cpu_regs[s->vex_v], 63);
} else {
tcg_gen_andi_tl(cpu_T[1], cpu_regs[s->vex_v], 31);
}
if (b == 0x1f7) {
tcg_gen_shl_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
} else if (b == 0x2f7) {
if (ot != OT_QUAD) {
tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
}
tcg_gen_sar_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
} else {
if (ot != OT_QUAD) {
tcg_gen_ext32u_tl(cpu_T[0], cpu_T[0]);
}
tcg_gen_shr_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
}
gen_op_mov_reg_T0(ot, reg);
break;
case 0x0f3:
case 0x1f3:
case 0x2f3: