mirror of
https://github.com/mpv-player/mpv
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134008a534
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9858 b3059339-0415-0410-9bf9-f77b7e298cf2
120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
/*
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* cpu_state.c
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* Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <inttypes.h>
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#include "mpeg2.h"
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#include "mpeg2_internal.h"
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#include "attributes.h"
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#ifdef ARCH_X86
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#include "mmx.h"
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#endif
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void (* mpeg2_cpu_state_save) (cpu_state_t * state) = NULL;
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void (* mpeg2_cpu_state_restore) (cpu_state_t * state) = NULL;
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#ifdef ARCH_X86
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static void state_restore_mmx (cpu_state_t * state)
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{
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emms ();
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}
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#endif
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#ifdef ARCH_PPC
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static void state_save_altivec (cpu_state_t * state)
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{
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asm (" \n"
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" li %r9, 16 \n"
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" stvx %v20, 0, %r3 \n"
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" li %r11, 32 \n"
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" stvx %v21, %r9, %r3 \n"
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" li %r9, 48 \n"
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" stvx %v22, %r11, %r3 \n"
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" li %r11, 64 \n"
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" stvx %v23, %r9, %r3 \n"
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" li %r9, 80 \n"
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" stvx %v24, %r11, %r3 \n"
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" li %r11, 96 \n"
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" stvx %v25, %r9, %r3 \n"
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" li %r9, 112 \n"
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" stvx %v26, %r11, %r3 \n"
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" li %r11, 128 \n"
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" stvx %v27, %r9, %r3 \n"
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" li %r9, 144 \n"
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" stvx %v28, %r11, %r3 \n"
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" li %r11, 160 \n"
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" stvx %v29, %r9, %r3 \n"
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" li %r9, 176 \n"
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" stvx %v30, %r11, %r3 \n"
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" stvx %v31, %r9, %r3 \n"
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);
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}
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static void state_restore_altivec (cpu_state_t * state)
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{
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asm (" \n"
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" li %r9, 16 \n"
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" lvx %v20, 0, %r3 \n"
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" li %r11, 32 \n"
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" lvx %v21, %r9, %r3 \n"
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" li %r9, 48 \n"
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" lvx %v22, %r11, %r3 \n"
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" li %r11, 64 \n"
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" lvx %v23, %r9, %r3 \n"
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" li %r9, 80 \n"
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" lvx %v24, %r11, %r3 \n"
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" li %r11, 96 \n"
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" lvx %v25, %r9, %r3 \n"
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" li %r9, 112 \n"
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" lvx %v26, %r11, %r3 \n"
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" li %r11, 128 \n"
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" lvx %v27, %r9, %r3 \n"
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" li %r9, 144 \n"
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" lvx %v28, %r11, %r3 \n"
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" li %r11, 160 \n"
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" lvx %v29, %r9, %r3 \n"
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" li %r9, 176 \n"
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" lvx %v30, %r11, %r3 \n"
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" lvx %v31, %r9, %r3 \n"
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);
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}
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#endif
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void mpeg2_cpu_state_init (uint32_t accel)
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{
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#ifdef ARCH_X86
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if (accel & MPEG2_ACCEL_X86_MMX) {
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mpeg2_cpu_state_restore = state_restore_mmx;
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}
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#endif
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#ifdef ARCH_PPC
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if (accel & MPEG2_ACCEL_PPC_ALTIVEC) {
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mpeg2_cpu_state_save = state_save_altivec;
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mpeg2_cpu_state_restore = state_restore_altivec;
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}
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#endif
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}
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