CPUID on Intel I5 3210-m
Posted: Wed May 10, 2017 11:11 am
Hi all
I'm trying to find out if my CPU supports AVX which according to the INTEL Identification program it does but if I run the following INTEL code to check it says it doesn't :-
It fails at the bit 27,28 check above, any ideas?
Bipman
I'm trying to find out if my CPU supports AVX which according to the INTEL Identification program it does but if I run the following INTEL code to check it says it doesn't :-
Code: Select all
xor eax, eax
cpuid
cmp eax, 1 ; does CPUID support eax = 1?
jb not_supported
mov eax, 1
cpuid
and ecx, 018000000h ;check 27 bit (OS uses XSAVE/XRSTOR)
cmp ecx, 018000000h ; and 28 (AVX supported by CPU)
jne not_supported
xor ecx, ecx ; XFEATURE_ENABLED_MASK/XCR0 register number = 0
xgetbv ; XFEATURE_ENABLED_MASK register is in edx:eax
and eax, 110b
cmp eax, 110b ; check the AVX registers restore at context switch
jne not_supported
mov eax, 1
jmp $
not_supported:
xor eax, eax
jmp $Bipman