1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2001,2002,2003,2004 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include "private/cpu.h"
40 #if defined FLAC__CPU_PPC
41 #if !defined FLAC__NO_ASM
42 #if defined __APPLE__ && defined __MACH__
43 #include <sys/sysctl.h>
44 #endif /* __APPLE__ && __MACH__ */
45 #endif /* FLAC__NO_ASM */
46 #endif /* FLAC__CPU_PPC */
48 const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000;
49 const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000;
50 const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000;
51 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000;
52 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000;
54 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000;
55 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000;
56 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000;
59 void FLAC__cpu_info(FLAC__CPUInfo *info)
62 info->type = FLAC__CPUINFO_TYPE_IA32;
63 #if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
66 unsigned cpuid = FLAC__cpu_info_asm_ia32();
67 info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false;
68 info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false;
69 info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false;
70 info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false;
71 info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false;
74 info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false;
77 #ifdef FLAC__USE_3DNOW
78 cpuid = FLAC__cpu_info_extended_amd_asm_ia32();
79 info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false;
80 info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false;
81 info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false;
83 info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false;
87 info->use_asm = false;
89 #elif defined FLAC__CPU_PPC
90 info->type = FLAC__CPUINFO_TYPE_PPC;
91 #if !defined FLAC__NO_ASM
93 #ifdef FLAC__USE_ALTIVEC
94 #if defined __APPLE__ && defined __MACH__
96 int selectors[2] = { CTL_HW, HW_VECTORUNIT };
98 size_t length = sizeof(result);
99 int error = sysctl(selectors, 2, &result, &length, 0, 0);
101 info->data.ppc.altivec = error==0 ? result!=0 : 0;
103 #else /* __APPLE__ && __MACH__ */
104 /* don't know of any other thread-safe way to check */
105 info->data.ppc.altivec = 0;
106 #endif /* __APPLE__ && __MACH__ */
107 #else /* FLAC__USE_ALTIVEC */
108 info->data.ppc.altivec = 0;
109 #endif /* FLAC__USE_ALTIVEC */
110 #else /* FLAC__NO_ASM */
111 info->use_asm = false;
112 #endif /* FLAC__NO_ASM */
114 info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
115 info->use_asm = false;