;/********************************************************; * Some code. Copyright (C) 2003 by Pascal Massimino.   *; * All Rights Reserved.      (http://skal.planet-d.net) *; * For Educational/Academic use ONLY. See 'LICENSE.TXT'.*; ********************************************************/;; CPU detection;;//////////////////////////////////////////////////////////////////////////%include "../../include/skl_syst/skl_nasm.h"globl Skl_Detect_CPUIDglobl Skl_Detect_MMXglobl Skl_Detect_SSEglobl Skl_Detect_SSE2globl Skl_Detect_3DNOWglobl Skl_Detect_3DNOWEXTglobl Skl_Get_CPUIDglobl Skl_Get_ModelIDTEXT;//////////////////////////////////////////////////////////////////////////Skl_Detect_CPUID: ; tests if ID bit #21 is flippable  push ebx  xor eax,eax  pushf  pop ebx  mov ecx, ebx  xor ebx, (1<<21) ; reverse bit #21 (ID)  push ebx  popf  xor ebx,ecx ; did the bit went back to its original value?  jz .Ok      ; yep...  inc eax.Ok:  push ecx  popf  pop ebx  ret;//////////////////////////////////////////////////////////////////////////Detect_Error:  xor eax,eaxDetect_Ok:  pop ebx  ret;//////////////////////////////////////////////////////////////////////////Skl_Detect_MMX:  push ebx  mov eax,1  cpuid  test edx, (1<<23) ; bit 23  jz Detect_Error  jnz Detect_Ok;//////////////////////////////////////////////////////////////////////////Skl_Detect_SSE:  push ebx  mov eax,1  cpuid  test edx, (1<<25) ; bit 25  jmp SSE_TestSkl_Detect_SSE2:  push ebx  mov eax,1  cpuid  test edx, (1<<26) ; bit 26SSE_Test:  jz Detect_Error  xorps xmm0, xmm0	; this may throw an interrupt! (caught higher)  jmp Detect_Ok;//////////////////////////////////////////////////////////////////////////Skl_Detect_3DNOW:  push ebx  mov eax, 0x80000001  cpuid  cmp eax, 0x80000000  jbe Detect_Error  mov eax, 0x80000001  cpuid  test edx, 0x80000000  ; bit 31  jz Detect_Error  jnz Detect_OkSkl_Detect_3DNOWEXT:  push ebx  mov eax, 0x80000001  cpuid  cmp eax, 0x80000000  jbe Detect_Error  mov eax, 0x80000001  cpuid  test edx, 0x40000000  ; bit 30  jz Detect_Error  jnz Detect_Ok;//////////////////////////////////////////////////////////////////////////Skl_Get_CPUID:  push edx  push ebx  xor eax,eax  cpuid  mov eax,[esp+4+8]  mov [eax+0], ebx  mov [eax+4], edx  mov [eax+8], ecx  mov byte [eax+12], 0  pop ebx  pop edx  retSkl_Get_ModelID:  push edx  push ebx  push edi  mov edi, [esp+4+12]  mov eax,0x80000000  cpuid  cmp eax,0x80000004  jb .Not_Ok  mov eax,0x80000002  cpuid  mov [edi+ 0], eax  mov [edi+ 4], ebx  mov [edi+ 8], ecx  mov [edi+12], edx  add edi,16  mov eax,0x80000003  cpuid  mov [edi+ 0], eax  mov [edi+ 4], ebx  mov [edi+ 8], ecx  mov [edi+12], edx  add edi,16  mov eax,0x80000004  cpuid  mov [edi+ 0], eax  mov [edi+ 4], ebx  mov [edi+ 8], ecx  mov [edi+12], edx  add edi,16.Not_Ok:  mov byte [edi],0.End:  pop edi  pop ebx  pop edx  ret;//////////////////////////////////////////////////////////////////////////