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authorH.J. Lu <hjl.tools@gmail.com>2013-01-03 09:38:20 -0800
committerH.J. Lu <hjl.tools@gmail.com>2013-01-03 09:38:20 -0800
commit5d7dd1ca8436db8a1444310d3305ca141dc925ac (patch)
tree144b51acd4d5c9fc1545e76d382cf3ee22219686 /sysdeps/x86_64
parenta92d7d69e49e12363cf9736d819443f6f77915ab (diff)
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Add HAS_RTM
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/multiarch/init-arch.c7
-rw-r--r--sysdeps/x86_64/multiarch/init-arch.h9
2 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c
index dc3b417c79..992cbfb754 100644
--- a/sysdeps/x86_64/multiarch/init-arch.c
+++ b/sysdeps/x86_64/multiarch/init-arch.c
@@ -143,6 +143,13 @@ __init_cpu_features (void)
   else
     kind = arch_kind_other;
 
+  if (__cpu_features.max_cpuid >= 7)
+    __cpuid_count (7, 0,
+		   __cpu_features.cpuid[COMMON_CPUID_INDEX_7].eax,
+		   __cpu_features.cpuid[COMMON_CPUID_INDEX_7].ebx,
+		   __cpu_features.cpuid[COMMON_CPUID_INDEX_7].ecx,
+		   __cpu_features.cpuid[COMMON_CPUID_INDEX_7].edx);
+
   /* Can we call xgetbv?  */
   if (CPUID_OSXSAVE)
     {
diff --git a/sysdeps/x86_64/multiarch/init-arch.h b/sysdeps/x86_64/multiarch/init-arch.h
index d3009b2e42..0aece18de3 100644
--- a/sysdeps/x86_64/multiarch/init-arch.h
+++ b/sysdeps/x86_64/multiarch/init-arch.h
@@ -26,6 +26,8 @@
 #define bit_FMA4_Usable			(1 << 8)
 
 /* CPUID Feature flags.  */
+
+/* COMMON_CPUID_INDEX_1.  */
 #define bit_SSE2	(1 << 26)
 #define bit_SSSE3	(1 << 9)
 #define bit_SSE4_1	(1 << 19)
@@ -36,6 +38,9 @@
 #define bit_FMA		(1 << 12)
 #define bit_FMA4	(1 << 16)
 
+/* COMMON_CPUID_INDEX_7.  */
+#define bit_RTM		(1 << 11)
+
 /* XCR0 Feature flags.  */
 #define bit_XMM_state  (1 << 1)
 #define bit_YMM_state  (2 << 1)
@@ -67,6 +72,7 @@
 enum
   {
     COMMON_CPUID_INDEX_1 = 0,
+    COMMON_CPUID_INDEX_7,
     COMMON_CPUID_INDEX_80000001,	/* for AMD */
     /* Keep the following line at the end.  */
     COMMON_CPUID_INDEX_MAX
@@ -137,6 +143,8 @@ extern const struct cpu_features *__get_cpu_features (void)
   HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_FMA)
 # define CPUID_FMA4 \
   HAS_CPUID_FLAG (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4)
+# define CPUID_RTM \
+  HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_RTM)
 
 /* HAS_* evaluates to true if we may use the feature at runtime.  */
 # define HAS_SSE2	HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2)
@@ -144,6 +152,7 @@ extern const struct cpu_features *__get_cpu_features (void)
 # define HAS_SSSE3	HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3)
 # define HAS_SSE4_1	HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1)
 # define HAS_SSE4_2	HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2)
+# define HAS_RTM	HAS_CPU_FEATURE (COMMON_CPUID_INDEX_7, ebx, bit_RTM)
 
 # define index_Fast_Rep_String		FEATURE_INDEX_1
 # define index_Fast_Copy_Backward	FEATURE_INDEX_1