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target-i386: Implement BNDMOV

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Backports commit 62b58ba58bfebdb8a1c447beaa1285cc21249d15 from qemu
This commit is contained in:
Richard Henderson 2018-02-20 14:08:06 -05:00 committed by Lioncash
parent 8bc3037864
commit c2f92123f4
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 74 additions and 3 deletions
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77
qemu/target-i386/translate.c
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@ -8112,6 +8112,47 @@ case 0x101:
break; break;
} }
break; break;
case 0x11a:
modrm = cpu_ldub_code(env, s->pc++);
if (s->flags & HF_MPX_EN_MASK) {
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
if (prefixes & PREFIX_DATA) {
/* bndmov -- from reg/mem */
if (reg >= 4 || s->aflag == MO_16) {
goto illegal_op;
}
if (mod == 3) {
int reg2 = (modrm & 7) | REX_B(s);
if (reg2 >= 4 || (prefixes & PREFIX_LOCK)) {
goto illegal_op;
}
if (s->flags & HF_MPX_IU_MASK) {
tcg_gen_mov_i64(tcg_ctx, tcg_ctx->cpu_bndl[reg], tcg_ctx->cpu_bndl[reg2]);
tcg_gen_mov_i64(tcg_ctx, tcg_ctx->cpu_bndu[reg], tcg_ctx->cpu_bndu[reg2]);
}
} else {
gen_lea_modrm(env, s, modrm);
if (CODE64(s)) {
tcg_gen_qemu_ld_i64(s->uc, tcg_ctx->cpu_bndl[reg], cpu_A0,
s->mem_index, MO_LEQ);
tcg_gen_addi_tl(tcg_ctx, cpu_A0, cpu_A0, 8);
tcg_gen_qemu_ld_i64(s->uc, tcg_ctx->cpu_bndu[reg], cpu_A0,
s->mem_index, MO_LEQ);
} else {
tcg_gen_qemu_ld_i64(s->uc, tcg_ctx->cpu_bndl[reg], cpu_A0,
s->mem_index, MO_LEUL);
tcg_gen_addi_tl(tcg_ctx, cpu_A0, cpu_A0, 4);
tcg_gen_qemu_ld_i64(s->uc, tcg_ctx->cpu_bndu[reg], cpu_A0,
s->mem_index, MO_LEUL);
}
/* bnd registers are now in-use */
gen_set_hflag(s, HF_MPX_IU_MASK);
}
}
}
gen_nop_modrm(env, s, modrm);
break;
case 0x11b: case 0x11b:
modrm = cpu_ldub_code(env, s->pc++); modrm = cpu_ldub_code(env, s->pc++);
if (s->flags & HF_MPX_EN_MASK) { if (s->flags & HF_MPX_EN_MASK) {
@ -8145,11 +8186,41 @@ case 0x101:
/* bnd registers are now in-use */ /* bnd registers are now in-use */
gen_set_hflag(s, HF_MPX_IU_MASK); gen_set_hflag(s, HF_MPX_IU_MASK);
break; break;
} else if (prefixes & PREFIX_DATA) {
/* bndmov -- to reg/mem */
if (reg >= 4 || s->aflag == MO_16) {
goto illegal_op;
}
if (mod == 3) {
int reg2 = (modrm & 7) | REX_B(s);
if (reg2 >= 4 || (prefixes & PREFIX_LOCK)) {
goto illegal_op;
}
if (s->flags & HF_MPX_IU_MASK) {
tcg_gen_mov_i64(tcg_ctx, tcg_ctx->cpu_bndl[reg2], tcg_ctx->cpu_bndl[reg]);
tcg_gen_mov_i64(tcg_ctx, tcg_ctx->cpu_bndu[reg2], tcg_ctx->cpu_bndu[reg]);
}
} else {
gen_lea_modrm(env, s, modrm);
if (CODE64(s)) {
tcg_gen_qemu_st_i64(s->uc, tcg_ctx->cpu_bndl[reg], cpu_A0,
s->mem_index, MO_LEQ);
tcg_gen_addi_tl(tcg_ctx, cpu_A0, cpu_A0, 8);
tcg_gen_qemu_st_i64(s->uc, tcg_ctx->cpu_bndu[reg], cpu_A0,
s->mem_index, MO_LEQ);
} else {
tcg_gen_qemu_st_i64(s->uc, tcg_ctx->cpu_bndl[reg], cpu_A0,
s->mem_index, MO_LEUL);
tcg_gen_addi_tl(tcg_ctx, cpu_A0, cpu_A0, 4);
tcg_gen_qemu_st_i64(s->uc, tcg_ctx->cpu_bndu[reg], cpu_A0,
s->mem_index, MO_LEUL);
}
}
} }
} }
gen_nop_modrm(env, s, modrm); gen_nop_modrm(env, s, modrm);
break; break;
case 0x119: case 0x11a: case 0x11c: case 0x11d: case 0x11e: case 0x11f: /* nop (multi byte) */ case 0x119: case 0x11c: case 0x11d: case 0x11e: case 0x11f: /* nop (multi byte) */
modrm = cpu_ldub_code(env, s->pc++); modrm = cpu_ldub_code(env, s->pc++);
gen_nop_modrm(env, s, modrm); gen_nop_modrm(env, s, modrm);
break; break;
@ -8590,11 +8661,11 @@ void tcg_x86_init(struct uc_struct *uc)
} }
for (i = 0; i < 4; ++i) { for (i = 0; i < 4; ++i) {
cpu_bndl[i] tcg_ctx->cpu_bndl[i]
= tcg_global_mem_new_i64(tcg_ctx, tcg_ctx->cpu_env, = tcg_global_mem_new_i64(tcg_ctx, tcg_ctx->cpu_env,
offsetof(CPUX86State, bnd_regs[i].lb), offsetof(CPUX86State, bnd_regs[i].lb),
bnd_regl_names[i]); bnd_regl_names[i]);
cpu_bndu[i] tcg_ctx->cpu_bndu[i]
= tcg_global_mem_new_i64(tcg_ctx, tcg_ctx->cpu_env, = tcg_global_mem_new_i64(tcg_ctx, tcg_ctx->cpu_env,
offsetof(CPUX86State, bnd_regs[i].ub), offsetof(CPUX86State, bnd_regs[i].ub),
bnd_regu_names[i]); bnd_regu_names[i]);