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117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
/* libFLAC - Free Lossless Audio Codec library
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* Copyright (C) 2001,2002,2003,2004 Josh Coalson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of the Xiph.org Foundation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "private/cpu.h"
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#include<stdlib.h>
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#include<stdio.h>
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#if defined FLAC__CPU_PPC
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#if !defined FLAC__NO_ASM
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#if defined __APPLE__ && defined __MACH__
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#include <sys/sysctl.h>
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#endif /* __APPLE__ && __MACH__ */
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#endif /* FLAC__NO_ASM */
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#endif /* FLAC__CPU_PPC */
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const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000;
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const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000;
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void FLAC__cpu_info(FLAC__CPUInfo *info)
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{
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#ifdef FLAC__CPU_IA32
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info->type = FLAC__CPUINFO_TYPE_IA32;
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#if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
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info->use_asm = true;
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{
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unsigned cpuid = FLAC__cpu_info_asm_ia32();
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info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false;
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info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false;
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info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false;
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info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false;
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info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false;
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#ifndef FLAC__SSE_OS
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info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false;
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#endif
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#ifdef FLAC__USE_3DNOW
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cpuid = FLAC__cpu_info_extended_amd_asm_ia32();
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info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false;
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info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false;
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info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false;
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#else
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info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false;
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#endif
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}
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#else
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info->use_asm = false;
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#endif
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#elif defined FLAC__CPU_PPC
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info->type = FLAC__CPUINFO_TYPE_PPC;
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#if !defined FLAC__NO_ASM
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info->use_asm = true;
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#ifdef FLAC__USE_ALTIVEC
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#if defined __APPLE__ && defined __MACH__
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{
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int selectors[2] = { CTL_HW, HW_VECTORUNIT };
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int result = 0;
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size_t length = sizeof(result);
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int error = sysctl(selectors, 2, &result, &length, 0, 0);
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info->data.ppc.altivec = error==0 ? result!=0 : 0;
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}
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#else /* __APPLE__ && __MACH__ */
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/* don't know of any other thread-safe way to check */
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info->data.ppc.altivec = 0;
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#endif /* __APPLE__ && __MACH__ */
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#else /* FLAC__USE_ALTIVEC */
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info->data.ppc.altivec = 0;
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#endif /* FLAC__USE_ALTIVEC */
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#else /* FLAC__NO_ASM */
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info->use_asm = false;
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#endif /* FLAC__NO_ASM */
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#else
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info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
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info->use_asm = false;
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#endif
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}
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