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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
Fast Zero-Length REP MOV (FZLRM) support to <sys/platform/x86.h>.
This commit is contained in:
H.J. Lu 2020-10-08 08:50:44 -07:00
parent c712401bc6
commit 428985c436
4 changed files with 27 additions and 0 deletions
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9
manual/platform.texi
View file

@ -331,12 +331,21 @@ 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{FXSR} -- FXSAVE and FXRSTOR instructions.
@item
@code{FZLRM} -- Fast Zero-Length REP MOV.
@item
@code{GFNI} -- GFNI instruction extensions.

3
sysdeps/x86/cpu-features.c
View file

@ -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))

9
sysdeps/x86/sys/platform/x86.h
View file

@ -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. */

6
sysdeps/x86/tst-get-cpu-features.c
View file

@ -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);