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cpufeatures: Change implementation of FillX86BrandString, fix missing header

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This commit is contained in:
Carles Fernandez 2021-10-25 16:45:38 +02:00
parent 3db583ff24
commit 54347faff8
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 12 additions and 16 deletions
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src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/cpuinfo_x86.c
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@ -88,7 +88,6 @@
defined(CPU_FEATURES_OS_FREEBSD)
#include "internal/filesystem.h" // Needed to parse /proc/cpuinfo
#include "internal/stack_line_reader.h" // Needed to parse /proc/cpuinfo
#include "internal/string_view.h" // Needed to parse /proc/cpuinfo
#elif defined(CPU_FEATURES_OS_DARWIN)
#if !defined(HAVE_SYSCTLBYNAME)
#error "Darwin needs support for sysctlbyname"
@ -98,6 +97,8 @@
#error "Unsupported OS"
#endif // CPU_FEATURES_OS
#include "internal/string_view.h"
////////////////////////////////////////////////////////////////////////////////
// Definitions for CpuId and GetXCR0Eax.
////////////////////////////////////////////////////////////////////////////////
@ -1746,23 +1747,18 @@ X86Microarchitecture GetX86Microarchitecture(const X86Info* info)
return X86_UNKNOWN;
}
static void SetString(const uint32_t max_cpuid_ext_leaf, const uint32_t leaf_id,
char* buffer)
{
const Leaf leaf = SafeCpuId(max_cpuid_ext_leaf, leaf_id);
// We allow calling memcpy from SetString which is only called when requesting
// X86BrandString.
memcpy(buffer, &leaf, sizeof(Leaf));
}
void FillX86BrandString(char brand_string[49])
{
const Leaf leaf_ext_0 = CpuId(0x80000000);
const uint32_t max_cpuid_leaf_ext = leaf_ext_0.eax;
SetString(max_cpuid_leaf_ext, 0x80000002, brand_string);
SetString(max_cpuid_leaf_ext, 0x80000003, brand_string + 16);
SetString(max_cpuid_leaf_ext, 0x80000004, brand_string + 32);
brand_string[48] = '\0';
const Leaf leaves[3] = {
SafeCpuId(max_cpuid_leaf_ext, 0x80000002),
SafeCpuId(max_cpuid_leaf_ext, 0x80000003),
SafeCpuId(max_cpuid_leaf_ext, 0x80000004),
};
#if __STDC_VERSION__ >= 201112L
_Static_assert(sizeof(leaves) == 48, "Leaves must be packed");
#endif
CpuFeatures_StringView_CopyString(view((const char*)leaves, sizeof(leaves)),
brand_string, 49);
}
////////////////////////////////////////////////////////////////////////////////