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authorH.J. Lu <hjl.tools@gmail.com>2018-12-03 05:54:43 -0800
committerH.J. Lu <hjl.tools@gmail.com>2018-12-03 05:54:56 -0800
commitc22e4c2a1431c5e77bf4288d35bf7629f2f093aa (patch)
tree666ae70088b899ad87a250a08b3be7a24bbc0157 /sysdeps/x86/cacheinfo.c
parent7b36d26b22d147ffc347f427f9fd584700578a94 (diff)
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x86: Extend CPUID support in struct cpu_features
Extend CPUID support for all feature bits from CPUID. Add a new macro, CPU_FEATURE_USABLE, which can be used to check if a feature is usable at run-time, instead of HAS_CPU_FEATURE and HAS_ARCH_FEATURE. Add COMMON_CPUID_INDEX_D_ECX_1, COMMON_CPUID_INDEX_80000007 and COMMON_CPUID_INDEX_80000008 to check CPU feature bits in them. Tested on i686 and x86-64 as well as using build-many-glibcs.py with x86 targets. * sysdeps/x86/cacheinfo.c (intel_check_word): Updated for cpu_features_basic. (__cache_sysconf): Likewise. (init_cacheinfo): Likewise. * sysdeps/x86/cpu-features.c (get_extended_indeces): Also populate COMMON_CPUID_INDEX_80000007 and COMMON_CPUID_INDEX_80000008. (get_common_indices): Also populate COMMON_CPUID_INDEX_D_ECX_1. Use CPU_FEATURES_CPU_P (cpu_features, XSAVEC) to check if XSAVEC is available. Set the bit_arch_XXX_Usable bits. (init_cpu_features): Use _Static_assert on index_arch_Fast_Unaligned_Load. __get_cpuid_registers and __get_arch_feature. Updated for cpu_features_basic. Set stepping in cpu_features. * sysdeps/x86/cpu-features.h: (FEATURE_INDEX_1): Changed to enum. (FEATURE_INDEX_2): New. (FEATURE_INDEX_MAX): Changed to enum. (COMMON_CPUID_INDEX_D_ECX_1): New. (COMMON_CPUID_INDEX_80000007): Likewise. (COMMON_CPUID_INDEX_80000008): Likewise. (cpuid_registers): Likewise. (cpu_features_basic): Likewise. (CPU_FEATURE_USABLE): Likewise. (bit_arch_XXX_Usable): Likewise. (cpu_features): Use cpuid_registers and cpu_features_basic. (bit_arch_XXX): Reweritten. (bit_cpu_XXX): Likewise. (index_cpu_XXX): Likewise. (reg_XXX): Likewise. * sysdeps/x86/tst-get-cpu-features.c: Include <stdio.h> and <support/check.h>. (CHECK_CPU_FEATURE): New. (CHECK_CPU_FEATURE_USABLE): Likewise. (cpu_kinds): Likewise. (do_test): Print vendor, family, model and stepping. Check HAS_CPU_FEATURE and CPU_FEATURE_USABLE. (TEST_FUNCTION): Removed. Include <support/test-driver.c> instead of "../../test-skeleton.c". * sysdeps/x86_64/multiarch/sched_cpucount.c (__sched_cpucount): Check POPCNT instead of POPCOUNT. * sysdeps/x86_64/multiarch/test-multiarch.c (do_test): Likewise.
Diffstat (limited to 'sysdeps/x86/cacheinfo.c')
-rw-r--r--sysdeps/x86/cacheinfo.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/sysdeps/x86/cacheinfo.c b/sysdeps/x86/cacheinfo.c
index b9444dd..58f0a3c 100644
--- a/sysdeps/x86/cacheinfo.c
+++ b/sysdeps/x86/cacheinfo.c
@@ -205,8 +205,8 @@ intel_check_word (int name, unsigned int value, bool *has_level_2,
/* Intel reused this value. For family 15, model 6 it
specifies the 3rd level cache. Otherwise the 2nd
level cache. */
- unsigned int family = cpu_features->family;
- unsigned int model = cpu_features->model;
+ unsigned int family = cpu_features->basic.family;
+ unsigned int model = cpu_features->basic.model;
if (family == 15 && model == 6)
{
@@ -258,7 +258,7 @@ intel_check_word (int name, unsigned int value, bool *has_level_2,
static long int __attribute__ ((noinline))
handle_intel (int name, const struct cpu_features *cpu_features)
{
- unsigned int maxidx = cpu_features->max_cpuid;
+ unsigned int maxidx = cpu_features->basic.max_cpuid;
/* Return -1 for older CPUs. */
if (maxidx < 2)
@@ -443,10 +443,10 @@ __cache_sysconf (int name)
{
const struct cpu_features *cpu_features = __get_cpu_features ();
- if (cpu_features->kind == arch_kind_intel)
+ if (cpu_features->basic.kind == arch_kind_intel)
return handle_intel (name, cpu_features);
- if (cpu_features->kind == arch_kind_amd)
+ if (cpu_features->basic.kind == arch_kind_amd)
return handle_amd (name);
// XXX Fill in more vendors.
@@ -497,9 +497,9 @@ init_cacheinfo (void)
unsigned int level;
unsigned int threads = 0;
const struct cpu_features *cpu_features = __get_cpu_features ();
- int max_cpuid = cpu_features->max_cpuid;
+ int max_cpuid = cpu_features->basic.max_cpuid;
- if (cpu_features->kind == arch_kind_intel)
+ if (cpu_features->basic.kind == arch_kind_intel)
{
data = handle_intel (_SC_LEVEL1_DCACHE_SIZE, cpu_features);
@@ -538,8 +538,8 @@ init_cacheinfo (void)
highest cache level. */
if (max_cpuid >= 4)
{
- unsigned int family = cpu_features->family;
- unsigned int model = cpu_features->model;
+ unsigned int family = cpu_features->basic.family;
+ unsigned int model = cpu_features->basic.model;
int i = 0;
@@ -700,7 +700,7 @@ intel_bug_no_cache_info:
shared += core;
}
}
- else if (cpu_features->kind == arch_kind_amd)
+ else if (cpu_features->basic.kind == arch_kind_amd)
{
data = handle_amd (_SC_LEVEL1_DCACHE_SIZE);
long int core = handle_amd (_SC_LEVEL2_CACHE_SIZE);