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| author | Richard Henderson <rth@twiddle.net> | 2015-07-06 19:37:00 +0100 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-02-15 14:50:00 +1100 |
| commit | 523e28d7614571680d21641bd0bd9b9e84570cee (patch) | |
| tree | 3960d489239e4b5be65bc3a2d9f31c1c5133942b /target-i386 | |
| parent | 62b58ba58bfebdb8a1c447beaa1285cc21249d15 (diff) | |
| download | qemu-523e28d7614571680d21641bd0bd9b9e84570cee.tar.gz | |
target-i386: Implement BNDCL, BNDCU, BNDCN
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/helper.h | 2 | ||||
| -rw-r--r-- | target-i386/mpx_helper.c | 8 | ||||
| -rw-r--r-- | target-i386/translate.c | 44 |
3 files changed, 53 insertions, 1 deletions
diff --git a/target-i386/helper.h b/target-i386/helper.h index 14a5041df0..e40216bdb6 100644 --- a/target-i386/helper.h +++ b/target-i386/helper.h @@ -16,6 +16,8 @@ DEF_HELPER_2(divq_EAX, void, env, tl) DEF_HELPER_2(idivq_EAX, void, env, tl) #endif +DEF_HELPER_FLAGS_2(bndck, TCG_CALL_NO_WG, void, env, i32) + DEF_HELPER_2(aam, void, env, int) DEF_HELPER_2(aad, void, env, int) DEF_HELPER_1(aaa, void, env) diff --git a/target-i386/mpx_helper.c b/target-i386/mpx_helper.c index 578b978eba..e4d5aba86b 100644 --- a/target-i386/mpx_helper.c +++ b/target-i386/mpx_helper.c @@ -51,3 +51,11 @@ void cpu_sync_bndcs_hflags(CPUX86State *env) env->hflags = hflags; env->hflags2 = hflags2; } + +void helper_bndck(CPUX86State *env, uint32_t fail) +{ + if (unlikely(fail)) { + env->bndcs_regs.sts = 1; + raise_exception_ra(env, EXCP05_BOUND, GETPC()); + } +} 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) { |