johann/cpu_features
1
0
Fork 0
mirror of https://github.com/google/cpu_features.git synced 2025-07-01 05:11:15 +02:00
Code Issues Releases Wiki Activity

Add Intel LAM/AMD UAI feature detection in X86_64 (#315)

Browse Source 
* Add Intel LAM/AMD UAI features in X86

* Add AMD UAI test for AMD_K19_ZEN4_RAPHAEL

* Add separate UAI for AMD
This commit is contained in:
Tomahawkd
2023-08-28 22:25:24 +08:00
committed by GitHub
parent a89e3b5569
commit b5cb91b35c
3 changed files with 18 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/impl_x86__base_implementation.inl
View File

@ -166,6 +166,7 @@ typedef struct {
Leaf leaf_80000002; // brand string
Leaf leaf_80000003; // brand string
Leaf leaf_80000004; // brand string
Leaf leaf_80000021; // AMD Extended Feature Identification 2
} Leaves;
static Leaves ReadLeaves(void) {
@ -186,6 +187,7 @@ static Leaves ReadLeaves(void) {
.leaf_80000002 = SafeCpuIdEx(max_cpuid_leaf_ext, 0x80000002, 0),
.leaf_80000003 = SafeCpuIdEx(max_cpuid_leaf_ext, 0x80000003, 0),
.leaf_80000004 = SafeCpuIdEx(max_cpuid_leaf_ext, 0x80000004, 0),
.leaf_80000021 = SafeCpuIdEx(max_cpuid_leaf_ext, 0x80000021, 0),
};
}
@ -390,6 +392,7 @@ static void ParseCpuId(const Leaves* leaves, X86Info* info,
features->fs_rep_cmpsb_scasb = IsBitSet(leaf_7_1.eax, 12);
features->adx = IsBitSet(leaf_7.ebx, 19);
features->lzcnt = IsBitSet(leaf_80000001.ecx, 5);
features->lam = IsBitSet(leaf_7_1.eax, 26);
/////////////////////////////////////////////////////////////////////////////
// The following section is devoted to Vector Extensions.
@ -462,6 +465,7 @@ static void ParseCpuId(const Leaves* leaves, X86Info* info,
static void ParseExtraAMDCpuId(const Leaves* leaves, X86Info* info,
OsPreserves os_preserves) {
const Leaf leaf_80000001 = leaves->leaf_80000001;
const Leaf leaf_80000021 = leaves->leaf_80000021;
X86Features* const features = &info->features;
@ -472,6 +476,8 @@ static void ParseExtraAMDCpuId(const Leaves* leaves, X86Info* info,
if (os_preserves.avx_registers) {
features->fma4 = IsBitSet(leaf_80000001.ecx, 16);
}
features->uai = IsBitSet(leaf_80000021.eax, 7);
}
static const X86Info kEmptyX86Info;
@ -1984,7 +1990,9 @@ CacheInfo GetX86CacheInfo(void) {
LINE(X86_FS_REP_MOV, fs_rep_mov, , , ) \
LINE(X86_FZ_REP_MOVSB, fz_rep_movsb, , , ) \
LINE(X86_FS_REP_STOSB, fs_rep_stosb, , , ) \
LINE(X86_FS_REP_CMPSB_SCASB, fs_rep_cmpsb_scasb, , , )
LINE(X86_FS_REP_CMPSB_SCASB, fs_rep_cmpsb_scasb, , , ) \
LINE(X86_LAM, lam, , , ) \
LINE(X86_UAI, uai, , , )
#define INTROSPECTION_PREFIX X86
#define INTROSPECTION_ENUM_PREFIX X86
#include "define_introspection.inl"