1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2001 Josh Coalson
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #include "private/cpu.h"
24 #if !defined(FLAC__NO_ASM) && defined(FLAC__CPU_IA32) && defined(FLAC__HAS_NASM) && !defined(FLAC__SSE_OS) && !defined(NO_VFORK)
26 #include <sys/types.h>
30 const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000;
31 const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000;
32 const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000;
33 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000;
34 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000;
36 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000;
37 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000;
38 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000;
41 void FLAC__cpu_info(FLAC__CPUInfo *info)
44 info->type = FLAC__CPUINFO_TYPE_IA32;
45 #if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
48 unsigned cpuid = FLAC__cpu_info_asm_ia32();
49 info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false;
50 info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false;
51 info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false;
52 info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false;
53 info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false;
57 if(info->data.ia32.sse == true || info->data.ia32.sse2 == true) {
61 FLAC__cpu_info_sse_test_asm_ia32();
66 waitpid(pid, &status, 0);
67 if(WIFEXITED(status) && WEXITSTATUS(status) == 0)
68 sse = 1; /* there was normal exit, no SIGILL */
71 info->data.ia32.sse = info->data.ia32.sse2 = false;
74 /* we are assuming OS isn't supporting SSE */
75 info->data.ia32.sse = info->data.ia32.sse2 = false;
79 cpuid = FLAC__cpu_info_extended_amd_asm_ia32();
80 info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false;
81 info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false;
82 info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false;
85 info->use_asm = false;
88 info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
89 info->use_asm = false;