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Diffstat (limited to 'apps/plugins/mpegplayer/cpu_accel.c')
-rw-r--r--apps/plugins/mpegplayer/cpu_accel.c220
1 files changed, 0 insertions, 220 deletions
diff --git a/apps/plugins/mpegplayer/cpu_accel.c b/apps/plugins/mpegplayer/cpu_accel.c
deleted file mode 100644
index 2616e04cd0..0000000000
--- a/apps/plugins/mpegplayer/cpu_accel.c
+++ /dev/null
@@ -1,220 +0,0 @@
1/*
2 * cpu_accel.c
3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
5 *
6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
7 * See http://libmpeg2.sourceforge.net/ for updates.
8 *
9 * mpeg2dec is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * mpeg2dec is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#include "plugin.h"
25
26#include "mpeg2dec_config.h"
27
28#include "mpeg2.h"
29#include "attributes.h"
30#include "mpeg2_internal.h"
31
32#ifdef ACCEL_DETECT
33#ifdef ARCH_X86
34static inline uint32_t arch_accel (void)
35{
36 uint32_t eax, ebx, ecx, edx;
37 int AMD;
38 uint32_t caps;
39
40#if !defined(PIC) && !defined(__PIC__)
41#define cpuid(op,eax,ebx,ecx,edx) \
42 __asm__ ("cpuid" \
43 : "=a" (eax), \
44 "=b" (ebx), \
45 "=c" (ecx), \
46 "=d" (edx) \
47 : "a" (op) \
48 : "cc")
49#else /* PIC version : save ebx */
50#define cpuid(op,eax,ebx,ecx,edx) \
51 __asm__ ("push %%ebx\n\t" \
52 "cpuid\n\t" \
53 "movl %%ebx,%1\n\t" \
54 "pop %%ebx" \
55 : "=a" (eax), \
56 "=r" (ebx), \
57 "=c" (ecx), \
58 "=d" (edx) \
59 : "a" (op) \
60 : "cc")
61#endif
62
63 __asm__ ("pushf\n\t"
64 "pushf\n\t"
65 "pop %0\n\t"
66 "movl %0,%1\n\t"
67 "xorl $0x200000,%0\n\t"
68 "push %0\n\t"
69 "popf\n\t"
70 "pushf\n\t"
71 "pop %0\n\t"
72 "popf"
73 : "=r" (eax),
74 "=r" (ebx)
75 :
76 : "cc");
77
78 if (eax == ebx) /* no cpuid */
79 return 0;
80
81 cpuid (0x00000000, eax, ebx, ecx, edx);
82 if (!eax) /* vendor string only */
83 return 0;
84
85 AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65);
86
87 cpuid (0x00000001, eax, ebx, ecx, edx);
88 if (! (edx & 0x00800000)) /* no MMX */
89 return 0;
90
91 caps = MPEG2_ACCEL_X86_MMX;
92 if (edx & 0x02000000) /* SSE - identical to AMD MMX extensions */
93 caps = MPEG2_ACCEL_X86_MMX | MPEG2_ACCEL_X86_MMXEXT;
94
95 cpuid (0x80000000, eax, ebx, ecx, edx);
96 if (eax < 0x80000001) /* no extended capabilities */
97 return caps;
98
99 cpuid (0x80000001, eax, ebx, ecx, edx);
100
101 if (edx & 0x80000000)
102 caps |= MPEG2_ACCEL_X86_3DNOW;
103
104 if (AMD && (edx & 0x00400000)) /* AMD MMX extensions */
105 caps |= MPEG2_ACCEL_X86_MMXEXT;
106
107 return caps;
108}
109#endif /* ARCH_X86 */
110
111#if defined(ARCH_PPC) || defined(ARCH_SPARC)
112#include <signal.h>
113#include <setjmp.h>
114
115static sigjmp_buf jmpbuf;
116static volatile sig_atomic_t canjump = 0;
117
118static RETSIGTYPE sigill_handler (int sig)
119{
120 if (!canjump) {
121 signal (sig, SIG_DFL);
122 raise (sig);
123 }
124
125 canjump = 0;
126 siglongjmp (jmpbuf, 1);
127}
128
129#ifdef ARCH_PPC
130static inline uint32_t arch_accel (void)
131{
132 static RETSIGTYPE (* oldsig) (int);
133
134 oldsig = signal (SIGILL, sigill_handler);
135 if (sigsetjmp (jmpbuf, 1)) {
136 signal (SIGILL, oldsig);
137 return 0;
138 }
139
140 canjump = 1;
141
142#ifdef HAVE_ALTIVEC_H /* gnu */
143#define VAND(a,b,c) "vand " #a "," #b "," #c "\n\t"
144#else /* apple */
145#define VAND(a,b,c) "vand v" #a ",v" #b ",v" #c "\n\t"
146#endif
147 asm volatile ("mtspr 256, %0\n\t"
148 VAND (0, 0, 0)
149 :
150 : "r" (-1));
151
152 canjump = 0;
153
154 signal (SIGILL, oldsig);
155 return MPEG2_ACCEL_PPC_ALTIVEC;
156}
157#endif /* ARCH_PPC */
158
159#ifdef ARCH_SPARC
160static inline uint32_t arch_accel (void)
161{
162 static RETSIGTYPE (* oldsig) (int);
163
164 oldsig = signal (SIGILL, sigill_handler);
165 if (sigsetjmp (jmpbuf, 1)) {
166 signal (SIGILL, oldsig);
167 return 0;
168 }
169
170 canjump = 1;
171
172 /* pdist %f0, %f0, %f0 */
173 __asm__ __volatile__(".word\t0x81b007c0");
174
175 canjump = 0;
176
177 if (sigsetjmp (jmpbuf, 1)) {
178 signal (SIGILL, oldsig);
179 return MPEG2_ACCEL_SPARC_VIS;
180 }
181
182 canjump = 1;
183
184 /* edge8n %g0, %g0, %g0 */
185 __asm__ __volatile__(".word\t0x81b00020");
186
187 canjump = 0;
188
189 signal (SIGILL, oldsig);
190 return MPEG2_ACCEL_SPARC_VIS | MPEG2_ACCEL_SPARC_VIS2;
191}
192#endif /* ARCH_SPARC */
193#endif /* ARCH_PPC || ARCH_SPARC */
194
195#ifdef ARCH_ALPHA
196static inline uint32_t arch_accel (void)
197{
198 uint64_t no_mvi;
199
200 asm volatile ("amask %1, %0"
201 : "=r" (no_mvi)
202 : "rI" (256)); /* AMASK_MVI */
203 return no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA |
204 MPEG2_ACCEL_ALPHA_MVI);
205}
206#endif /* ARCH_ALPHA */
207#endif /* ACCEL_DETECT */
208
209uint32_t mpeg2_detect_accel (void)
210{
211 uint32_t accel;
212
213 accel = 0;
214#ifdef ACCEL_DETECT
215#if defined (ARCH_X86) || defined (ARCH_PPC) || defined (ARCH_ALPHA) || defined (ARCH_SPARC)
216 accel = arch_accel ();
217#endif
218#endif
219 return accel;
220}
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