be more precise in long long int literal specification for ANSI compilers (gcc3 requi...
[flac.git] / src / libFLAC / cpu.c
1 /* libFLAC - Free Lossless Audio Codec library
2  * Copyright (C) 2001,2002,2003,2004  Josh Coalson
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  * - Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  *
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.
14  *
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.
18  *
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.
30  */
31
32 #include "private/cpu.h"
33 #include<stdlib.h>
34 #include<stdio.h>
35
36 #ifdef HAVE_CONFIG_H
37 #include <config.h>
38 #endif
39
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 */
47
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;
53
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;
57
58
59 void FLAC__cpu_info(FLAC__CPUInfo *info)
60 {
61 #ifdef FLAC__CPU_IA32
62         info->type = FLAC__CPUINFO_TYPE_IA32;
63 #if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
64         info->use_asm = true;
65         {
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;
72
73 #ifndef FLAC__SSE_OS
74                 info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false;
75 #endif
76
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;
82 #else
83                 info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false;
84 #endif
85         }
86 #else
87         info->use_asm = false;
88 #endif
89 #elif defined FLAC__CPU_PPC
90         info->type = FLAC__CPUINFO_TYPE_PPC;
91 #if !defined FLAC__NO_ASM
92         info->use_asm = true;
93 #ifdef FLAC__USE_ALTIVEC
94 #if defined __APPLE__ && defined __MACH__
95         {
96                 int selectors[2] = { CTL_HW, HW_VECTORUNIT };
97                 int result = 0;
98                 size_t length = sizeof(result);
99                 int error = sysctl(selectors, 2, &result, &length, 0, 0);
100
101                 info->data.ppc.altivec = error==0 ? result!=0 : 0;
102         }
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 */
113 #else
114         info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
115         info->use_asm = false;
116 #endif
117 }