3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
7 * See http://libmpeg2.sourceforge.net/ for updates.
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.
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.
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
23 * Modified for use with MPlayer, see libmpeg-0.4.1.diff for the exact changes.
24 * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
34 #include "attributes.h"
35 #include "mpeg2_internal.h"
36 #if defined(ARCH_X86) || defined(ARCH_X86_64)
40 void (* mpeg2_cpu_state_save
) (cpu_state_t
* state
) = NULL
;
41 void (* mpeg2_cpu_state_restore
) (cpu_state_t
* state
) = NULL
;
43 #if defined(ARCH_X86) || defined(ARCH_X86_64)
44 static void state_restore_mmx (cpu_state_t
* state
)
50 #if defined(ARCH_PPC) && defined(HAVE_ALTIVEC)
51 #if defined( __APPLE_CC__ ) && defined( __APPLE_ALTIVEC__ ) /* apple */
52 #define LI(a,b) "li r" #a "," #b "\n\t"
53 #define STVX0(a,b,c) "stvx v" #a ",0,r" #c "\n\t"
54 #define STVX(a,b,c) "stvx v" #a ",r" #b ",r" #c "\n\t"
55 #define LVX0(a,b,c) "lvx v" #a ",0,r" #c "\n\t"
56 #define LVX(a,b,c) "lvx v" #a ",r" #b ",r" #c "\n\t"
58 #define LI(a,b) "li " #a "," #b "\n\t"
59 #define STVX0(a,b,c) "stvx " #a ",0," #c "\n\t"
60 #define STVX(a,b,c) "stvx " #a "," #b "," #c "\n\t"
61 #define LVX0(a,b,c) "lvx " #a ",0," #c "\n\t"
62 #define LVX(a,b,c) "lvx " #a "," #b "," #c "\n\t"
65 static void state_save_altivec (cpu_state_t
* state
)
92 static void state_restore_altivec (cpu_state_t
* state
)
120 void mpeg2_cpu_state_init (uint32_t accel
)
122 #if defined(ARCH_X86) || defined(ARCH_X86_64)
123 if (accel
& MPEG2_ACCEL_X86_MMX
) {
124 mpeg2_cpu_state_restore
= state_restore_mmx
;
127 #if defined(ARCH_PPC) && defined(HAVE_ALTIVEC)
128 if (accel
& MPEG2_ACCEL_PPC_ALTIVEC
) {
129 mpeg2_cpu_state_save
= state_save_altivec
;
130 mpeg2_cpu_state_restore
= state_restore_altivec
;