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srsLTE
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add own cpuid helper to detect avx2 support 

the cpuid.h version caused issues with older GCC 5.4
This commit is contained in:
Andre Puschmann 2018-12-10 22:16:13 +01:00
parent 21e1573152
commit 59435c2c34
1 changed files with 13 additions and 1 deletions
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14
lib/src/common/arch_select.cc
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@ -43,6 +43,18 @@
#define MAX_CMD_LEN (64)
#ifndef IS_ARM
static __inline int __get_cpuid_count_redef(unsigned int __leaf, unsigned int __subleaf, unsigned int* __eax,
unsigned int* __ebx, unsigned int* __ecx, unsigned int* __edx)
{
unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, 0);
if (__max_leaf == 0 || __max_leaf < __leaf)
return 0;
__cpuid_count(__leaf, __subleaf, *__eax, *__ebx, *__ecx, *__edx);
return 1;
}
const char* x86_get_isa()
{
int ret = 0;
@ -57,7 +69,7 @@ const char* x86_get_isa()
}
// query advanced features
ret = __get_cpuid_count(X86_CPUID_ADVANCED_LEAF, 0, &eax, &ebx, &ecx, &edx);
ret = __get_cpuid_count_redef(X86_CPUID_ADVANCED_LEAF, 0, &eax, &ebx, &ecx, &edx);
if (ret) {
has_avx2 = ebx & bit_AVX2;
}