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allow for cpuid public functions with non-intel build

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This commit is contained in:
Jacob Barthelmeh
2022-11-11 09:42:02 -07:00
parent 7887576032
commit c78b669b42
1 changed files with 13 additions and 3 deletions
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16
wolfcrypt/src/cpuid.c
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@ -28,6 +28,11 @@
#include <wolfssl/wolfcrypt/cpuid.h>
#if defined(HAVE_CPUID) || defined(HAVE_CPUID_INTEL)
static word32 cpuid_check = 0;
static word32 cpuid_flags = 0;
#endif
#ifdef HAVE_CPUID_INTEL
/* Each platform needs to query info type 1 from cpuid to see if aesni is
* supported. Also, let's setup a macro for proper linkage w/o ABI conflicts
@ -53,9 +58,6 @@
#define ECX 2
#define EDX 3
static word32 cpuid_check = 0;
static word32 cpuid_flags = 0;
static word32 cpuid_flag(word32 leaf, word32 sub, word32 num, word32 bit)
{
int got_intel_cpu = 0;
@ -99,6 +101,14 @@
if (cpuid_flag(1, 0, ECX, 22)) { cpuid_flags |= CPUID_MOVBE ; }
if (cpuid_flag(7, 0, EBX, 3)) { cpuid_flags |= CPUID_BMI1 ; }
cpuid_check = 1;
}
}
#elif defined(HAVE_CPUID)
void cpuid_set_flags(void)
{
if (!cpuid_check) {
cpuid_flags = 0;
cpuid_check = 1;
}
}