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Diffstat (limited to 'apps/codecs/libFLAC/cpu.c')
-rw-r--r-- | apps/codecs/libFLAC/cpu.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/apps/codecs/libFLAC/cpu.c b/apps/codecs/libFLAC/cpu.c new file mode 100644 index 0000000000..1e6b27994f --- /dev/null +++ b/apps/codecs/libFLAC/cpu.c | |||
@@ -0,0 +1,179 @@ | |||
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 <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 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 | |||
55 | static sigjmp_buf jmpbuf; | ||
56 | static volatile sig_atomic_t canjump = 0; | ||
57 | |||
58 | static 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 | |||
71 | const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000; | ||
72 | const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000; | ||
73 | const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000; | ||
74 | const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000; | ||
75 | const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000; | ||
76 | |||
77 | const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000; | ||
78 | const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000; | ||
79 | const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000; | ||
80 | |||
81 | |||
82 | void 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 | } | ||