added cpuid helper func

amxmodx/helpers-x86.asm

@@ -0,0 +1,51 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; (C)2006 by David "BAILOPAN" Anderson			 ;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;;Licensed under the GNU General Public License, version 2
+;;This is a portion of AMX Mod X 
+;; and is maintained by the AMX Mod X development team.
+
+section .text
+
+global amxx_CpuSupport, _amxx_CpuSupport
+
+amxx_CpuSupport:
+_amxx_CpuSupport:
+	push	ebp
+	mov		ebp, esp
+	
+	push	ebx
+	
+	mov		eax, 0
+	cpuid
+	cmp		eax, 1
+	jl		.fail
+	
+	mov		eax, 1
+	cpuid
+	;check if family == 5 or 4
+	and		eax, 0780h	;family mask
+	shr		eax, 7		;family shift
+	cmp		eax, 5
+	je		.fail
+	cmp		eax, 4
+	je		.fail
+	;check if CMOV exists
+	shr		edx, 15
+	and		edx, 1
+	cmp		edx, 0
+	je		.fail
+	
+	mov		eax, 1
+	jmp		.end
+
+.fail:
+	xor		eax, eax
+	
+.end
+	
+	pop		ebx
+
+	pop		ebp
+	ret