summaryrefslogtreecommitdiff
path: root/sysdeps/x86/cpu-features.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/x86/cpu-features.c')
-rw-r--r--sysdeps/x86/cpu-features.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 8108256c42..ea0b64fdb9 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -43,6 +43,20 @@ extern void TUNABLE_CALLBACK (set_x86_shstk) (tunable_val_t *)
#endif
static void
+get_extended_indices (struct cpu_features *cpu_features)
+{
+ unsigned int eax, ebx, ecx, edx;
+ __cpuid (0x80000000, eax, ebx, ecx, edx);
+ if (eax >= 0x80000001)
+ __cpuid (0x80000001,
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].eax,
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ebx,
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ecx,
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].edx);
+
+}
+
+static void
get_common_indeces (struct cpu_features *cpu_features,
unsigned int *family, unsigned int *model,
unsigned int *extended_model, unsigned int *stepping)
@@ -224,6 +238,8 @@ init_cpu_features (struct cpu_features *cpu_features)
get_common_indeces (cpu_features, &family, &model, &extended_model,
&stepping);
+ get_extended_indices (cpu_features);
+
if (family == 0x06)
{
model += extended_model;
@@ -338,16 +354,9 @@ init_cpu_features (struct cpu_features *cpu_features)
get_common_indeces (cpu_features, &family, &model, &extended_model,
&stepping);
- ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx;
+ get_extended_indices (cpu_features);
- unsigned int eax;
- __cpuid (0x80000000, eax, ebx, ecx, edx);
- if (eax >= 0x80000001)
- __cpuid (0x80000001,
- cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].eax,
- cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ebx,
- cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ecx,
- cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].edx);
+ ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx;
if (HAS_ARCH_FEATURE (AVX_Usable))
{