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Initial Enhanced REP MOVSB/STOSB (ERMS) support 

The newer Intel processors support Enhanced REP MOVSB/STOSB (ERMS) which
has a feature bit in CPUID.  This patch adds the Enhanced REP MOVSB/STOSB
(ERMS) bit to x86 cpu-features.

	* sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New.
	(index_cpu_ERMS): Likewise.
	(reg_ERMS): Likewise.
This commit is contained in:
H.J. Lu 2016-03-28 19:22:59 -07:00
parent 9ff9351d02
commit 0791f91dff
2 changed files with 10 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2016-03-28 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New.
(index_cpu_ERMS): Likewise.
(reg_ERMS): Likewise.
2016-03-28 Aurelien Jarno <aurelien@aurel32.net>
* sysdeps/unix/sysv/linux/sys/personality.h (UNAME26, FDPIC_FUNCPTRS,

4
sysdeps/x86/cpu-features.h
View File

@ -53,6 +53,7 @@
#define bit_cpu_FMA4 (1 << 16)
/* COMMON_CPUID_INDEX_7. */
#define bit_cpu_ERMS (1 << 9)
#define bit_cpu_RTM (1 << 11)
#define bit_cpu_AVX2 (1 << 5)
#define bit_cpu_AVX512F (1 << 16)
@ -84,6 +85,7 @@
# define index_cpu_SSE4_2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
# define index_cpu_AVX COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
# define index_cpu_AVX2 COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET
# define index_cpu_ERMS COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET
# define index_arch_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE
# define index_arch_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE
@ -228,6 +230,7 @@ extern const struct cpu_features *__get_cpu_features (void)
# define index_cpu_AVX2 COMMON_CPUID_INDEX_7
# define index_cpu_AVX512F COMMON_CPUID_INDEX_7
# define index_cpu_AVX512DQ COMMON_CPUID_INDEX_7
# define index_cpu_ERMS COMMON_CPUID_INDEX_7
# define index_cpu_RTM COMMON_CPUID_INDEX_7
# define index_cpu_FMA COMMON_CPUID_INDEX_1
# define index_cpu_FMA4 COMMON_CPUID_INDEX_80000001
@ -244,6 +247,7 @@ extern const struct cpu_features *__get_cpu_features (void)
# define reg_AVX2 ebx
# define reg_AVX512F ebx
# define reg_AVX512DQ ebx
# define reg_ERMS ebx
# define reg_RTM ebx
# define reg_FMA ecx
# define reg_FMA4 ecx