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[69.181.90.243]) by smtp.gmail.com with ESMTPSA id p4sm4597954pjk.8.2020.10.08.09.12.35 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Oct 2020 09:12:37 -0700 (PDT) Received: from gnu-cfl-2.localdomain (localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id EFB2F1A0267 for ; Thu, 8 Oct 2020 09:12:32 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH 5/5] : Add FSRCS/FSRS/FZLRM support Date: Thu, 8 Oct 2020 09:12:32 -0700 Message-Id: <20201008161232.135513-6-hjl.tools@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201008161232.135513-1-hjl.tools@gmail.com> References: <20201008161232.135513-1-hjl.tools@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-3040.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: "H.J. Lu via Libc-alpha" From: "H.J. Lu" Reply-To: "H.J. Lu" Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" Add Fast Short REP CMP and SCA (FSRCS), Fast Short REP STO (FSRS) and Fast Zero-Length REP MOV (FZLRM) support to . --- manual/platform.texi | 9 +++++++++ sysdeps/x86/cpu-features.c | 3 +++ sysdeps/x86/sys/platform/x86.h | 9 +++++++++ sysdeps/x86/tst-get-cpu-features.c | 6 ++++++ 4 files changed, 27 insertions(+) diff --git a/manual/platform.texi b/manual/platform.texi index 1e44525552..217a5c99ad 100644 --- a/manual/platform.texi +++ b/manual/platform.texi @@ -331,9 +331,18 @@ extensions. @item @code{FSGSBASE} -- RDFSBASE/RDGSBASE/WRFSBASE/WRGSBASE instructions. +@item +@code{FSRCS} -- Fast Short REP CMP and SCA. + @item @code{FSRM} -- Fast Short REP MOV. +@item +@code{FSRS} -- Fast Short REP STO. + +@item +@code{FZLRM} -- Fast Zero-Length REP MOV. + @item @code{FXSR} -- FXSAVE and FXRSTOR instructions. diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index b0fac22c27..286ff96771 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -93,6 +93,9 @@ update_usable (struct cpu_features *cpu_features) CPU_FEATURE_SET_USABLE (cpu_features, TBM); CPU_FEATURE_SET_USABLE (cpu_features, RDTSCP); CPU_FEATURE_SET_USABLE (cpu_features, WBNOINVD); + CPU_FEATURE_SET_USABLE (cpu_features, FZLRM); + CPU_FEATURE_SET_USABLE (cpu_features, FSRS); + CPU_FEATURE_SET_USABLE (cpu_features, FSRCS); /* Can we call xgetbv? */ if (CPU_FEATURES_CPU_P (cpu_features, OSXSAVE)) diff --git a/sysdeps/x86/sys/platform/x86.h b/sysdeps/x86/sys/platform/x86.h index 394f1c41a6..3ef92b04e8 100644 --- a/sysdeps/x86/sys/platform/x86.h +++ b/sysdeps/x86/sys/platform/x86.h @@ -313,6 +313,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int) /* EAX. */ #define bit_cpu_AVX_VNNI (1u << 4) #define bit_cpu_AVX512_BF16 (1u << 5) +#define bit_cpu_FZLRM (1u << 10) +#define bit_cpu_FSRS (1u << 11) +#define bit_cpu_FSRCS (1u << 12) #define bit_cpu_HRESET (1u << 22) /* COMMON_CPUID_INDEX_19. */ @@ -534,6 +537,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int) /* EAX. */ #define index_cpu_AVX_VNNI COMMON_CPUID_INDEX_7_ECX_1 #define index_cpu_AVX512_BF16 COMMON_CPUID_INDEX_7_ECX_1 +#define index_cpu_FZLRM COMMON_CPUID_INDEX_7_ECX_1 +#define index_cpu_FSRS COMMON_CPUID_INDEX_7_ECX_1 +#define index_cpu_FSRCS COMMON_CPUID_INDEX_7_ECX_1 #define index_cpu_HRESET COMMON_CPUID_INDEX_7_ECX_1 /* COMMON_CPUID_INDEX_19. */ @@ -755,6 +761,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int) /* EAX. */ #define reg_AVX_VNNI eax #define reg_AVX512_BF16 eax +#define reg_FZLRM eax +#define reg_FSRS eax +#define reg_FSRCS eax #define reg_HRESET eax /* COMMON_CPUID_INDEX_19. */ diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c index aacaa49045..667aa27117 100644 --- a/sysdeps/x86/tst-get-cpu-features.c +++ b/sysdeps/x86/tst-get-cpu-features.c @@ -223,6 +223,9 @@ do_test (void) CHECK_CPU_FEATURE (WBNOINVD); CHECK_CPU_FEATURE (AVX_VNNI); CHECK_CPU_FEATURE (AVX512_BF16); + CHECK_CPU_FEATURE (FZLRM); + CHECK_CPU_FEATURE (FSRS); + CHECK_CPU_FEATURE (FSRCS); CHECK_CPU_FEATURE (HRESET); CHECK_CPU_FEATURE (AESKLE); CHECK_CPU_FEATURE (WIDE_KL); @@ -380,6 +383,9 @@ do_test (void) CHECK_CPU_FEATURE_USABLE (WBNOINVD); CHECK_CPU_FEATURE_USABLE (AVX_VNNI); CHECK_CPU_FEATURE_USABLE (AVX512_BF16); + CHECK_CPU_FEATURE_USABLE (FZLRM); + CHECK_CPU_FEATURE_USABLE (FSRS); + CHECK_CPU_FEATURE_USABLE (FSRCS); CHECK_CPU_FEATURE_USABLE (AESKLE); CHECK_CPU_FEATURE_USABLE (WIDE_KL);