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target-i386: Implement BNDLDX, BNDSTX

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Backports commit bdd87b3b591add6e4d7c6b6125fcf0d706cc8bc4 from qemu
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Richard Henderson 2018-02-20 14:31:26 -05:00 committed by Lioncash
parent f30c3efd0e
commit 8ca89461b5
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1 changed files with 57 additions and 0 deletions
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57
qemu/target-i386/translate.c
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@ -8187,6 +8187,36 @@ case 0x101:
/* bnd registers are now in-use */
gen_set_hflag(s, HF_MPX_IU_MASK);
}
} else if (mod != 3) {
/* bndldx */
AddressParts a = gen_lea_modrm_0(env, s, modrm);
if (reg >= 4
|| (prefixes & PREFIX_LOCK)
|| s->aflag == MO_16
|| a.base < -1) {
goto illegal_op;
}
if (a.base >= 0) {
tcg_gen_addi_tl(tcg_ctx, cpu_A0, *cpu_regs[a.base], a.disp);
} else {
tcg_gen_movi_tl(tcg_ctx, cpu_A0, 0);
}
gen_lea_v_seg(s, s->aflag, cpu_A0, a.def_seg, s->override);
if (a.index >= 0) {
tcg_gen_mov_tl(tcg_ctx, cpu_T0, *cpu_regs[a.index]);
} else {
tcg_gen_movi_tl(tcg_ctx, cpu_T0, 0);
}
if (CODE64(s)) {
gen_helper_bndldx64(tcg_ctx, tcg_ctx->cpu_bndl[reg], cpu_env, cpu_A0, cpu_T0);
tcg_gen_ld_i64(tcg_ctx, tcg_ctx->cpu_bndu[reg], cpu_env,
offsetof(CPUX86State, mmx_t0.MMX_Q(0)));
} else {
gen_helper_bndldx32(tcg_ctx, tcg_ctx->cpu_bndu[reg], cpu_env, cpu_A0, cpu_T0);
tcg_gen_ext32u_i64(tcg_ctx, tcg_ctx->cpu_bndl[reg], tcg_ctx->cpu_bndu[reg]);
tcg_gen_shri_i64(tcg_ctx, tcg_ctx->cpu_bndu[reg], tcg_ctx->cpu_bndu[reg], 32);
}
gen_set_hflag(s, HF_MPX_IU_MASK);
}
}
gen_nop_modrm(env, s, modrm);
@ -8262,6 +8292,33 @@ case 0x101:
s->mem_index, MO_LEUL);
}
}
} else if (mod != 3) {
/* bndstx */
AddressParts a = gen_lea_modrm_0(env, s, modrm);
if (reg >= 4
|| (prefixes & PREFIX_LOCK)
|| s->aflag == MO_16
|| a.base < -1) {
goto illegal_op;
}
if (a.base >= 0) {
tcg_gen_addi_tl(tcg_ctx, cpu_A0, *cpu_regs[a.base], a.disp);
} else {
tcg_gen_movi_tl(tcg_ctx, cpu_A0, 0);
}
gen_lea_v_seg(s, s->aflag, cpu_A0, a.def_seg, s->override);
if (a.index >= 0) {
tcg_gen_mov_tl(tcg_ctx, cpu_T0, *cpu_regs[a.index]);
} else {
tcg_gen_movi_tl(tcg_ctx, cpu_T0, 0);
}
if (CODE64(s)) {
gen_helper_bndstx64(tcg_ctx, cpu_env, cpu_A0, cpu_T0,
tcg_ctx->cpu_bndl[reg], tcg_ctx->cpu_bndu[reg]);
} else {
gen_helper_bndstx32(tcg_ctx, cpu_env, cpu_A0, cpu_T0,
tcg_ctx->cpu_bndl[reg], tcg_ctx->cpu_bndu[reg]);
}
}
}
gen_nop_modrm(env, s, modrm);