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Diffstat (limited to 'target-i386/translate.c')
-rw-r--r--target-i386/translate.c44
1 files changed, 43 insertions, 1 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 1ac245ba17..803424c8bb 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -1989,6 +1989,21 @@ static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm)
(void)gen_lea_modrm_0(env, s, modrm);
}
+/* Used for BNDCL, BNDCU, BNDCN. */
+static void gen_bndck(CPUX86State *env, DisasContext *s, int modrm,
+ TCGCond cond, TCGv_i64 bndv)
+{
+ TCGv ea = gen_lea_modrm_1(gen_lea_modrm_0(env, s, modrm));
+
+ tcg_gen_extu_tl_i64(cpu_tmp1_i64, ea);
+ if (!CODE64(s)) {
+ tcg_gen_ext32u_i64(cpu_tmp1_i64, cpu_tmp1_i64);
+ }
+ tcg_gen_setcond_i64(cond, cpu_tmp1_i64, cpu_tmp1_i64, bndv);
+ tcg_gen_extrl_i64_i32(cpu_tmp2_i32, cpu_tmp1_i64);
+ gen_helper_bndck(cpu_env, cpu_tmp2_i32);
+}
+
/* used for LEA and MOV AX, mem */
static void gen_add_A0_ds_seg(DisasContext *s)
{
@@ -7445,7 +7460,26 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
if (s->flags & HF_MPX_EN_MASK) {
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
- if (prefixes & PREFIX_DATA) {
+ if (prefixes & PREFIX_REPZ) {
+ /* bndcl */
+ if (reg >= 4
+ || (prefixes & PREFIX_LOCK)
+ || s->aflag == MO_16) {
+ goto illegal_op;
+ }
+ gen_bndck(env, s, modrm, TCG_COND_LTU, cpu_bndl[reg]);
+ } else if (prefixes & PREFIX_REPNZ) {
+ /* bndcu */
+ if (reg >= 4
+ || (prefixes & PREFIX_LOCK)
+ || s->aflag == MO_16) {
+ goto illegal_op;
+ }
+ TCGv_i64 notu = tcg_temp_new_i64();
+ tcg_gen_not_i64(notu, cpu_bndu[reg]);
+ gen_bndck(env, s, modrm, TCG_COND_GTU, notu);
+ tcg_temp_free_i64(notu);
+ } else if (prefixes & PREFIX_DATA) {
/* bndmov -- from reg/mem */
if (reg >= 4 || s->aflag == MO_16) {
goto illegal_op;
@@ -7514,6 +7548,14 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
/* bnd registers are now in-use */
gen_set_hflag(s, HF_MPX_IU_MASK);
break;
+ } else if (prefixes & PREFIX_REPNZ) {
+ /* bndcn */
+ if (reg >= 4
+ || (prefixes & PREFIX_LOCK)
+ || s->aflag == MO_16) {
+ goto illegal_op;
+ }
+ gen_bndck(env, s, modrm, TCG_COND_GTU, cpu_bndu[reg]);
} else if (prefixes & PREFIX_DATA) {
/* bndmov -- to reg/mem */
if (reg >= 4 || s->aflag == MO_16) {