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Tue, 15 Oct 2024 07:18:02 -0700 (PDT) X-Google-Smtp-Source: AGHT+IH90VasnVgsCclkSA9KLRJBHRflatwX3GVoWtZZtXAe4DeYWi+4Sisxacn1Rku8AQJUY1Xg8w== X-Received: by 2002:adf:f9c8:0:b0:37d:415c:f27c with SMTP id ffacd0b85a97d-37d5ffb9969mr7650745f8f.38.1729001882188; Tue, 15 Oct 2024 07:18:02 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Richard Henderson Subject: [PULL 14/25] target/i386: do not check PREFIX_LOCK in old-style decoder Date: Tue, 15 Oct 2024 16:17:00 +0200 Message-ID: <20241015141711.528342-15-pbonzini@redhat.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241015141711.528342-1-pbonzini@redhat.com> References: <20241015141711.528342-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; 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Reviewed-by: Richard Henderson Signed-off-by: Paolo Bonzini --- target/i386/tcg/translate.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index 1d3b5f35c39..f4bffef9e28 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -2869,7 +2869,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) switch ((modrm >> 3) & 7) { case 7: if (mod !=3D 3 || - (s->prefix & (PREFIX_LOCK | PREFIX_REPNZ))) { + (s->prefix & PREFIX_REPNZ)) { goto illegal_op; } if (s->prefix & PREFIX_REPZ) { @@ -2889,7 +2889,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) =20 case 6: /* RDRAND */ if (mod !=3D 3 || - (s->prefix & (PREFIX_LOCK | PREFIX_REPZ | PREFIX_REPNZ)) || + (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) || !(s->cpuid_ext_features & CPUID_EXT_RDRAND)) { goto illegal_op; } @@ -3049,8 +3049,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) =20 case 0xd0: /* xgetbv */ if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) =3D=3D 0 - || (s->prefix & (PREFIX_LOCK | PREFIX_DATA - | PREFIX_REPZ | PREFIX_REPNZ))) { + || (s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ)= )) { goto illegal_op; } tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]); @@ -3060,8 +3059,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) =20 case 0xd1: /* xsetbv */ if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) =3D=3D 0 - || (s->prefix & (PREFIX_LOCK | PREFIX_DATA - | PREFIX_REPZ | PREFIX_REPNZ))) { + || (s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ)= )) { goto illegal_op; } gen_svm_check_intercept(s, SVM_EXIT_XSETBV); @@ -3228,8 +3226,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) gen_st_modrm(s, decode, ot); break; case 0xee: /* rdpkru */ - if (s->prefix & (PREFIX_LOCK | PREFIX_DATA - | PREFIX_REPZ | PREFIX_REPNZ)) { + if (s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ)) { goto illegal_op; } tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]); @@ -3237,8 +3234,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) tcg_gen_extr_i64_tl(cpu_regs[R_EAX], cpu_regs[R_EDX], s->tmp1_= i64); break; case 0xef: /* wrpkru */ - if (s->prefix & (PREFIX_LOCK | PREFIX_DATA - | PREFIX_REPZ | PREFIX_REPNZ)) { + if (s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ)) { goto illegal_op; } tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX], @@ -3314,7 +3310,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) if (prefixes & PREFIX_REPZ) { /* bndcl */ if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16) { goto illegal_op; } @@ -3322,7 +3317,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) } else if (prefixes & PREFIX_REPNZ) { /* bndcu */ if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16) { goto illegal_op; } @@ -3336,7 +3330,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) } if (mod =3D=3D 3) { int reg2 =3D (modrm & 7) | REX_B(s); - if (reg2 >=3D 4 || (prefixes & PREFIX_LOCK)) { + if (reg2 >=3D 4) { goto illegal_op; } if (s->flags & HF_MPX_IU_MASK) { @@ -3365,7 +3359,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) /* bndldx */ AddressParts a =3D decode->mem; if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16 || a.base < -1) { goto illegal_op; @@ -3401,7 +3394,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) if (mod !=3D 3 && (prefixes & PREFIX_REPZ)) { /* bndmk */ if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16) { goto illegal_op; } @@ -3429,7 +3421,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) } else if (prefixes & PREFIX_REPNZ) { /* bndcn */ if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16) { goto illegal_op; } @@ -3441,7 +3432,7 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) } if (mod =3D=3D 3) { int reg2 =3D (modrm & 7) | REX_B(s); - if (reg2 >=3D 4 || (prefixes & PREFIX_LOCK)) { + if (reg2 >=3D 4) { goto illegal_op; } if (s->flags & HF_MPX_IU_MASK) { @@ -3468,7 +3459,6 @@ static void gen_multi0F(DisasContext *s, X86DecodedIn= sn *decode) /* bndstx */ AddressParts a =3D decode->mem; if (reg >=3D 4 - || (prefixes & PREFIX_LOCK) || s->aflag =3D=3D MO_16 || a.base < -1) { goto illegal_op; --=20 2.46.2