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commit 428985c436f442e91e27173bccaf28f547233586
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Thu Oct 8 08:50:44 2020 -0700
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<sys/platform/x86.h>: Add FSRCS/FSRS/FZLRM support
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Add Fast Short REP CMP and SCA (FSRCS), Fast Short REP STO (FSRS) and
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Fast Zero-Length REP MOV (FZLRM) support to <sys/platform/x86.h>.
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diff --git a/manual/platform.texi b/manual/platform.texi
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index 1e44525552f5bda5..8fec2933d6442823 100644
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--- a/manual/platform.texi
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+++ b/manual/platform.texi
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@@ -331,12 +331,21 @@ extensions.
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@item
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@code{FSGSBASE} -- RDFSBASE/RDGSBASE/WRFSBASE/WRGSBASE instructions.
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+@item
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+@code{FSRCS} -- Fast Short REP CMP and SCA.
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+
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@item
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@code{FSRM} -- Fast Short REP MOV.
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+@item
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+@code{FSRS} -- Fast Short REP STO.
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+
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@item
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@code{FXSR} -- FXSAVE and FXRSTOR instructions.
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+@item
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+@code{FZLRM} -- Fast Zero-Length REP MOV.
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+
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@item
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@code{GFNI} -- GFNI instruction extensions.
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diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
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index 3e5b9341c9756009..5f0548fe08134236 100644
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--- a/sysdeps/x86/cpu-features.c
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+++ b/sysdeps/x86/cpu-features.c
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@@ -93,6 +93,9 @@ update_usable (struct cpu_features *cpu_features)
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CPU_FEATURE_SET_USABLE (cpu_features, TBM);
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CPU_FEATURE_SET_USABLE (cpu_features, RDTSCP);
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CPU_FEATURE_SET_USABLE (cpu_features, WBNOINVD);
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+ CPU_FEATURE_SET_USABLE (cpu_features, FZLRM);
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+ CPU_FEATURE_SET_USABLE (cpu_features, FSRS);
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+ CPU_FEATURE_SET_USABLE (cpu_features, FSRCS);
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/* Can we call xgetbv? */
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if (CPU_FEATURES_CPU_P (cpu_features, OSXSAVE))
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diff --git a/sysdeps/x86/sys/platform/x86.h b/sysdeps/x86/sys/platform/x86.h
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index 357c6f1c5605d82d..e5cc7c683a20b5a0 100644
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--- a/sysdeps/x86/sys/platform/x86.h
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+++ b/sysdeps/x86/sys/platform/x86.h
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@@ -313,6 +313,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define bit_cpu_AVX_VNNI (1u << 4)
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#define bit_cpu_AVX512_BF16 (1u << 5)
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+#define bit_cpu_FZLRM (1u << 10)
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+#define bit_cpu_FSRS (1u << 11)
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+#define bit_cpu_FSRCS (1u << 12)
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#define bit_cpu_HRESET (1u << 22)
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/* COMMON_CPUID_INDEX_19. */
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@@ -534,6 +537,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define index_cpu_AVX_VNNI COMMON_CPUID_INDEX_7_ECX_1
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#define index_cpu_AVX512_BF16 COMMON_CPUID_INDEX_7_ECX_1
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+#define index_cpu_FZLRM COMMON_CPUID_INDEX_7_ECX_1
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+#define index_cpu_FSRS COMMON_CPUID_INDEX_7_ECX_1
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+#define index_cpu_FSRCS COMMON_CPUID_INDEX_7_ECX_1
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#define index_cpu_HRESET COMMON_CPUID_INDEX_7_ECX_1
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/* COMMON_CPUID_INDEX_19. */
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@@ -755,6 +761,9 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define reg_AVX_VNNI eax
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#define reg_AVX512_BF16 eax
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+#define reg_FZLRM eax
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+#define reg_FSRS eax
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+#define reg_FSRCS eax
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#define reg_HRESET eax
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/* COMMON_CPUID_INDEX_19. */
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diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
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index 1516af1d461a801b..2763deb6d008597f 100644
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--- a/sysdeps/x86/tst-get-cpu-features.c
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+++ b/sysdeps/x86/tst-get-cpu-features.c
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@@ -221,6 +221,9 @@ do_test (void)
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CHECK_CPU_FEATURE (WBNOINVD);
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CHECK_CPU_FEATURE (AVX_VNNI);
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CHECK_CPU_FEATURE (AVX512_BF16);
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+ CHECK_CPU_FEATURE (FZLRM);
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+ CHECK_CPU_FEATURE (FSRS);
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+ CHECK_CPU_FEATURE (FSRCS);
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CHECK_CPU_FEATURE (HRESET);
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CHECK_CPU_FEATURE (AESKLE);
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CHECK_CPU_FEATURE (WIDE_KL);
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@@ -378,6 +381,9 @@ do_test (void)
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CHECK_CPU_FEATURE_USABLE (WBNOINVD);
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CHECK_CPU_FEATURE_USABLE (AVX_VNNI);
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CHECK_CPU_FEATURE_USABLE (AVX512_BF16);
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+ CHECK_CPU_FEATURE_USABLE (FZLRM);
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+ CHECK_CPU_FEATURE_USABLE (FSRS);
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+ CHECK_CPU_FEATURE_USABLE (FSRCS);
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CHECK_CPU_FEATURE_USABLE (AESKLE);
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CHECK_CPU_FEATURE_USABLE (WIDE_KL);
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