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Per arch build and inlining of cpuid_x86.

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This commit is contained in:
Guillaume Chatelet
2019-01-15 10:52:56 +01:00
parent b6e7c32c90
commit e8e5610fc4
7 changed files with 98 additions and 117 deletions
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48
src/cpuinfo_x86.c
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@ -19,6 +19,54 @@
#include <stdbool.h>
#include <string.h>
#if !defined(CPU_FEATURES_ARCH_X86)
#error "Cannot compile cpuinfo_x86 on a non x86 platform."
#endif
////////////////////////////////////////////////////////////////////////////////
// Definitions for CpuId and GetXCR0Eax.
////////////////////////////////////////////////////////////////////////////////
#if defined(CPU_FEATURES_MOCK_CPUID_X86)
// Implementation will be provided by test/cpuinfo_x86_test.cc.
#elif defined(CPU_FEATURES_COMPILER_CLANG) || defined(CPU_FEATURES_COMPILER_GCC)
#include <cpuid.h>
Leaf CpuId(uint32_t leaf_id) {
Leaf leaf;
__cpuid_count(leaf_id, 0, leaf.eax, leaf.ebx, leaf.ecx, leaf.edx);
return leaf;
}
uint32_t GetXCR0Eax(void) {
uint32_t eax, edx;
__asm("XGETBV" : "=a"(eax), "=d"(edx) : "c"(0));
return eax;
}
#elif defined(CPU_FEATURES_COMPILER_MSC)
#include <immintrin.h>
#include <intrin.h> // For __cpuidex()
Leaf CpuId(uint32_t leaf_id) {
Leaf leaf;
int data[4];
__cpuid(data, leaf_id);
leaf.eax = data[0];
leaf.ebx = data[1];
leaf.ecx = data[2];
leaf.edx = data[3];
return leaf;
}
uint32_t GetXCR0Eax(void) { return _xgetbv(0); }
#else
#error "Unsupported compiler, x86 cpuid requires either GCC, Clang or MSVC."
#endif
static const Leaf kEmptyLeaf;
static Leaf SafeCpuId(uint32_t max_cpuid_leaf, uint32_t leaf_id) {