PROWAREtech

articles » current » assembly » x86 » check-for-sse41-support

x86 Assembly: How to Check for SSE4.1 Support

An example of how to check if a processor supports the SSE4.1 instruction set.

This assembly code was compiled with MS Visual C++ Express Edition 2005 using the MACRO ASSEMBLER for MS Visual C++ Express Edition 2005.

This example is from the SSE/SSE2 tutorial.

TITLE 'extern "C" int __cdecl isSSE41();'
.686P
.model FLAT
PUBLIC	_isSSE41
_TEXT	SEGMENT
_isSSE41 PROC NEAR

	push ebx
	
	mov eax, 1
	cpuid
	shr ecx, 19 ; bit 19 of the ecx register
	and ecx, 1
	mov eax, ecx

	pop ebx

	ret 0
_isSSE41 ENDP
_TEXT	ENDS
END

This site uses cookies. Cookies are simple text files stored on the user's computer. They are used for adding features and security to this site. Read the privacy policy.
CLOSE