mirror of https://github.com/mpv-player/mpv
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/*
|
|
* cpu_state.c
|
|
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
|
|
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
|
|
*
|
|
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
|
|
* See http://libmpeg2.sourceforge.net/ for updates.
|
|
*
|
|
* mpeg2dec is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* mpeg2dec is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "mpeg2.h"
|
|
#include "attributes.h"
|
|
#include "mpeg2_internal.h"
|
|
#if defined(ARCH_X86) || defined(ARCH_X86_64)
|
|
#include "mmx.h"
|
|
#endif
|
|
|
|
void (* mpeg2_cpu_state_save) (cpu_state_t * state) = NULL;
|
|
void (* mpeg2_cpu_state_restore) (cpu_state_t * state) = NULL;
|
|
|
|
#if defined(ARCH_X86) || defined(ARCH_X86_64)
|
|
static void state_restore_mmx (cpu_state_t * state)
|
|
{
|
|
emms ();
|
|
}
|
|
#endif
|
|
|
|
#ifdef ARCH_PPC
|
|
#if defined(__APPLE_CC__) /* apple */
|
|
#define LI(a,b) "li r" #a "," #b "\n\t"
|
|
#define STVX0(a,b,c) "stvx v" #a ",0,r" #c "\n\t"
|
|
#define STVX(a,b,c) "stvx v" #a ",r" #b ",r" #c "\n\t"
|
|
#define LVX0(a,b,c) "lvx v" #a ",0,r" #c "\n\t"
|
|
#define LVX(a,b,c) "lvx v" #a ",r" #b ",r" #c "\n\t"
|
|
#else /* gnu */
|
|
#define LI(a,b) "li " #a "," #b "\n\t"
|
|
#define STVX0(a,b,c) "stvx " #a ",0," #c "\n\t"
|
|
#define STVX(a,b,c) "stvx " #a "," #b "," #c "\n\t"
|
|
#define LVX0(a,b,c) "lvx " #a ",0," #c "\n\t"
|
|
#define LVX(a,b,c) "lvx " #a "," #b "," #c "\n\t"
|
|
#endif
|
|
|
|
static void state_save_altivec (cpu_state_t * state)
|
|
{
|
|
asm (LI (9, 16)
|
|
STVX0 (20, 0, 3)
|
|
LI (11, 32)
|
|
STVX (21, 9, 3)
|
|
LI (9, 48)
|
|
STVX (22, 11, 3)
|
|
LI (11, 64)
|
|
STVX (23, 9, 3)
|
|
LI (9, 80)
|
|
STVX (24, 11, 3)
|
|
LI (11, 96)
|
|
STVX (25, 9, 3)
|
|
LI (9, 112)
|
|
STVX (26, 11, 3)
|
|
LI (11, 128)
|
|
STVX (27, 9, 3)
|
|
LI (9, 144)
|
|
STVX (28, 11, 3)
|
|
LI (11, 160)
|
|
STVX (29, 9, 3)
|
|
LI (9, 176)
|
|
STVX (30, 11, 3)
|
|
STVX (31, 9, 3));
|
|
}
|
|
|
|
static void state_restore_altivec (cpu_state_t * state)
|
|
{
|
|
asm (LI (9, 16)
|
|
LVX0 (20, 0, 3)
|
|
LI (11, 32)
|
|
LVX (21, 9, 3)
|
|
LI (9, 48)
|
|
LVX (22, 11, 3)
|
|
LI (11, 64)
|
|
LVX (23, 9, 3)
|
|
LI (9, 80)
|
|
LVX (24, 11, 3)
|
|
LI (11, 96)
|
|
LVX (25, 9, 3)
|
|
LI (9, 112)
|
|
LVX (26, 11, 3)
|
|
LI (11, 128)
|
|
LVX (27, 9, 3)
|
|
LI (9, 144)
|
|
LVX (28, 11, 3)
|
|
LI (11, 160)
|
|
LVX (29, 9, 3)
|
|
LI (9, 176)
|
|
LVX (30, 11, 3)
|
|
LVX (31, 9, 3));
|
|
}
|
|
#endif
|
|
|
|
void mpeg2_cpu_state_init (uint32_t accel)
|
|
{
|
|
#if defined(ARCH_X86) || defined(ARCH_X86_64)
|
|
if (accel & MPEG2_ACCEL_X86_MMX) {
|
|
mpeg2_cpu_state_restore = state_restore_mmx;
|
|
}
|
|
#endif
|
|
#ifdef ARCH_PPC
|
|
if (accel & MPEG2_ACCEL_PPC_ALTIVEC) {
|
|
mpeg2_cpu_state_save = state_save_altivec;
|
|
mpeg2_cpu_state_restore = state_restore_altivec;
|
|
}
|
|
#endif
|
|
}
|