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Diffstat (limited to 'apps/codecs/libFLAC/cpu.c')
-rw-r--r--apps/codecs/libFLAC/cpu.c179
1 files changed, 0 insertions, 179 deletions
diff --git a/apps/codecs/libFLAC/cpu.c b/apps/codecs/libFLAC/cpu.c
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--- a/apps/codecs/libFLAC/cpu.c
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1/* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2001,2002,2003,2004,2005 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 "global.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 FLAC__SYS_DARWIN
43#include <sys/sysctl.h>
44#include <mach/mach.h>
45#include <mach/mach_host.h>
46#include <mach/host_info.h>
47#include <mach/machine.h>
48#ifndef CPU_SUBTYPE_POWERPC_970
49#define CPU_SUBTYPE_POWERPC_970 ((cpu_subtype_t) 100)
50#endif
51#else /* FLAC__SYS_DARWIN */
52#include <signal.h>
53#include <setjmp.h>
54
55static sigjmp_buf jmpbuf;
56static volatile sig_atomic_t canjump = 0;
57
58static void sigill_handler (int sig)
59{
60 if (!canjump) {
61 signal (sig, SIG_DFL);
62 raise (sig);
63 }
64 canjump = 0;
65 siglongjmp (jmpbuf, 1);
66}
67#endif /* FLAC__SYS_DARWIN */
68#endif /* FLAC__NO_ASM */
69#endif /* FLAC__CPU_PPC */
70
71const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000;
72const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000;
73const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000;
74const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000;
75const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000;
76
77const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000;
78const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000;
79const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000;
80
81
82void FLAC__cpu_info(FLAC__CPUInfo *info)
83{
84#ifdef FLAC__CPU_IA32
85 info->type = FLAC__CPUINFO_TYPE_IA32;
86#if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
87 info->use_asm = true;
88 {
89 unsigned cpuid = FLAC__cpu_info_asm_ia32();
90 info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false;
91 info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false;
92 info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false;
93 info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false;
94 info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false;
95
96#ifndef FLAC__SSE_OS
97 info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false;
98#endif
99
100#ifdef FLAC__USE_3DNOW
101 cpuid = FLAC__cpu_info_extended_amd_asm_ia32();
102 info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false;
103 info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false;
104 info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false;
105#else
106 info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false;
107#endif
108 }
109#else
110 info->use_asm = false;
111#endif
112#elif defined FLAC__CPU_PPC
113 info->type = FLAC__CPUINFO_TYPE_PPC;
114#if !defined FLAC__NO_ASM
115 info->use_asm = true;
116#ifdef FLAC__USE_ALTIVEC
117#if defined FLAC__SYS_DARWIN
118 {
119 int selectors[2] = { CTL_HW, HW_VECTORUNIT };
120 int result = 0;
121 size_t length = sizeof(result);
122 int error = sysctl(selectors, 2, &result, &length, 0, 0);
123
124 info->data.ppc.altivec = error==0 ? result!=0 : 0;
125 }
126 {
127 host_basic_info_data_t hostInfo;
128 mach_msg_type_number_t infoCount;
129
130 infoCount = HOST_BASIC_INFO_COUNT;
131 host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo, &infoCount);
132
133 info->data.ppc.ppc64 = (hostInfo.cpu_type == CPU_TYPE_POWERPC) && (hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970);
134 }
135#else /* FLAC__SYS_DARWIN */
136 {
137 /* no Darwin, do it the brute-force way */
138 /* this is borrowed from MPlayer from the libmpeg2 library */
139 info->data.ppc.altivec = 0;
140 info->data.ppc.ppc64 = 0;
141
142 signal (SIGILL, sigill_handler);
143 if (!sigsetjmp (jmpbuf, 1)) {
144 canjump = 1;
145
146 asm volatile (
147 "mtspr 256, %0\n\t"
148 "vand %%v0, %%v0, %%v0"
149 :
150 : "r" (-1)
151 );
152
153 info->data.ppc.altivec = 1;
154 }
155 canjump = 0;
156 if (!sigsetjmp (jmpbuf, 1)) {
157 int x = 0;
158 canjump = 1;
159
160 /* PPC64 hardware implements the cntlzd instruction */
161 asm volatile ("cntlzd %0, %1" : "=r" (x) : "r" (x) );
162
163 info->data.ppc.ppc64 = 1;
164 }
165 signal (SIGILL, SIG_DFL);
166 }
167#endif /* FLAC__SYS_DARWIN */
168#else /* FLAC__USE_ALTIVEC */
169 info->data.ppc.altivec = 0;
170 info->data.ppc.ppc64 = 0;
171#endif /* FLAC__USE_ALTIVEC */
172#else /* FLAC__NO_ASM */
173 info->use_asm = false;
174#endif /* FLAC__NO_ASM */
175#else
176 info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
177 info->use_asm = false;
178#endif
179}
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