;/****************************************************************************** ; * * ; * This file is part of XviD, a free MPEG-4 video encoder/decoder * ; * * ; * XviD is an implementation of a part of one or more MPEG-4 Video tools * ; * as specified in ISO/IEC 14496-2 standard. Those intending to use this * ; * software module in hardware or software products are advised that its * ; * use may infringe existing patents or copyrights, and any such use * ; * would be at such party's own risk. The original developer of this * ; * software module and his/her company, and subsequent editors and their * ; * companies, will have no liability for use of this software or * ; * modifications or derivatives thereof. * ; * * ; * XviD is free software; you can redistribute it and/or modify it * ; * under the terms of the GNU General Public License as published by * ; * the Free Software Foundation; either version 2 of the License, or * ; * (at your option) any later version. * ; * * ; * XviD is distributed in the hope that it will be useful, but * ; * WITHOUT ANY WARRANTY; without even the implied warranty of * ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * ; * GNU General Public License for more details. * ; * * ; * You should have received a copy of the GNU General Public License * ; * along with this program; if not, write to the Free Software * ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * ; * * ; ******************************************************************************/ ; ;/****************************************************************************** ; * * ; * cpuid.asm, check cpu features * ; * * ; * Copyright (C) 2001 - Michael Militzer , * ; * * ; * For more information visit the XviD homepage: http://www.xvid.org * ; * * ; ******************************************************************************/ ; ;/****************************************************************************** ; * * ; * Revision history: * ; * * ; * 17.12.2001 initial version (Isibaar) * ; * * ; ******************************************************************************/ bits 32 %define CPUID_TSC 0x00000010 %define CPUID_MMX 0x00800000 %define CPUID_SSE 0x02000000 %define CPUID_SSE2 0x04000000 %define EXT_CPUID_3DNOW 0x80000000 %define EXT_CPUID_AMD_3DNOWEXT 0x40000000 %define EXT_CPUID_AMD_MMXEXT 0x00400000 %define XVID_CPU_MMX 0x00000001 %define XVID_CPU_MMXEXT 0x00000002 %define XVID_CPU_SSE 0x00000004 %define XVID_CPU_SSE2 0x00000008 %define XVID_CPU_3DNOW 0x00000010 %define XVID_CPU_3DNOWEXT 0x00000020 %define XVID_CPU_TSC 0x00000040 %macro cglobal 1 %ifdef PREFIX global _%1 %define %1 _%1 %else global %1 %endif %endmacro ALIGN 32 section .data vendorAMD db "AuthenticAMD" %macro CHECK_FEATURE 3 mov ecx, %1 and ecx, edx neg ecx sbb ecx, ecx and ecx, %2 or %3, ecx %endmacro section .text ; int check_cpu_feature(void) cglobal check_cpu_features check_cpu_features: push ebx push esi push edi push ebp xor ebp,ebp ; CPUID command ? pushfd pop eax mov ecx, eax xor eax, 0x200000 push eax popfd pushfd pop eax cmp eax, ecx jz near .cpu_quit ; no CPUID command -> exit ; get vendor string, used later xor eax, eax cpuid mov [esp-12], ebx ; vendor string mov [esp-12+4], edx mov [esp-12+8], ecx test eax, eax jz near .cpu_quit mov eax, 1 cpuid ; RDTSC command ? CHECK_FEATURE CPUID_TSC, XVID_CPU_TSC, ebp ; MMX support ? CHECK_FEATURE CPUID_MMX, XVID_CPU_MMX, ebp ; SSE support ? CHECK_FEATURE CPUID_SSE, (XVID_CPU_MMXEXT|XVID_CPU_SSE), ebp ; SSE2 support? CHECK_FEATURE CPUID_SSE2, XVID_CPU_SSE2, ebp ; extended functions? mov eax, 0x80000000 cpuid cmp eax, 0x80000000 jbe near .cpu_quit mov eax, 0x80000001 cpuid ; AMD cpu ? lea esi, [vendorAMD] lea edi, [esp-12] mov ecx, 12 cld repe cmpsb jnz .cpu_quit ; 3DNow! support ? CHECK_FEATURE EXT_CPUID_3DNOW, XVID_CPU_3DNOW, ebp ; 3DNOW extended ? CHECK_FEATURE EXT_CPUID_AMD_3DNOWEXT, XVID_CPU_3DNOWEXT, ebp ; extended MMX ? CHECK_FEATURE EXT_CPUID_AMD_MMXEXT, XVID_CPU_MMXEXT, ebp .cpu_quit: mov eax, ebp pop ebp pop edi pop esi pop ebx ret ; sse/sse2 operating support detection routines ; these will trigger an invalid instruction signal if not supported. cglobal sse_os_trigger align 16 sse_os_trigger: xorps xmm0, xmm0 ret cglobal sse2_os_trigger align 16 sse2_os_trigger: xorpd xmm0, xmm0 ret