blob: 8a82823af32078d64081315cc6e23953d4e91043 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// Copyright 2017 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cpu_features_macros.h"
#ifdef CPU_FEATURES_ARCH_X86
#ifdef CPU_FEATURES_OS_WINDOWS
#include "impl_x86__base_implementation.inl"
static void OverrideOsPreserves(OsPreserves* os_preserves) {
(void)os_preserves;
// No override
}
#include "internal/windows_utils.h"
#if defined(CPU_FEATURES_MOCK_CPUID_X86)
extern bool GetWindowsIsProcessorFeaturePresent(DWORD);
#else // CPU_FEATURES_MOCK_CPUID_X86
static bool GetWindowsIsProcessorFeaturePresent(DWORD ProcessorFeature) {
return IsProcessorFeaturePresent(ProcessorFeature);
}
#endif
static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
// Handling Windows platform through IsProcessorFeaturePresent.
// https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-isprocessorfeaturepresent
features->sse =
GetWindowsIsProcessorFeaturePresent(PF_XMMI_INSTRUCTIONS_AVAILABLE);
features->sse2 =
GetWindowsIsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE);
features->sse3 =
GetWindowsIsProcessorFeaturePresent(PF_SSE3_INSTRUCTIONS_AVAILABLE);
features->ssse3 =
GetWindowsIsProcessorFeaturePresent(PF_SSSE3_INSTRUCTIONS_AVAILABLE);
features->sse4_1 =
GetWindowsIsProcessorFeaturePresent(PF_SSE4_1_INSTRUCTIONS_AVAILABLE);
features->sse4_2 =
GetWindowsIsProcessorFeaturePresent(PF_SSE4_2_INSTRUCTIONS_AVAILABLE);
// do not bother checking PF_AVX*
// cause AVX enabled processor will have XCR0 be exposed and this function will be skipped at all
}
#endif // CPU_FEATURES_OS_WINDOWS
#endif // CPU_FEATURES_ARCH_X86
|
