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/*
* Alpha optimized DSP utils
* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* These functions are scheduled for pca56. They should work
* reasonably on ev6, though.
*/
#include "regdef.h"
/* Some nicer register names. */
#define ta t10
#define tb t11
#define tc t12
#define td AT
/* Danger: these overlap with the argument list and the return value */
#define te a5
#define tf a4
#define tg a3
#define th v0
.set noat
.set noreorder
.arch pca56
.text
/************************************************************************
* void put_pixels_axp_asm(uint8_t *block, const uint8_t *pixels,
* int line_size, int h)
*/
.align 6
.globl put_pixels_axp_asm
.ent put_pixels_axp_asm
put_pixels_axp_asm:
.frame sp, 0, ra
.prologue 0
and a1, 7, t0
beq t0, $aligned
.align 4
$unaligned:
ldq_u t0, 0(a1)
ldq_u t1, 8(a1)
addq a1, a2, a1
nop
ldq_u t2, 0(a1)
ldq_u t3, 8(a1)
addq a1, a2, a1
nop
ldq_u t4, 0(a1)
ldq_u t5, 8(a1)
addq a1, a2, a1
nop
ldq_u t6, 0(a1)
ldq_u t7, 8(a1)
extql t0, a1, t0
addq a1, a2, a1
extqh t1, a1, t1
addq a0, a2, t8
extql t2, a1, t2
addq t8, a2, t9
extqh t3, a1, t3
addq t9, a2, ta
extql t4, a1, t4
or t0, t1, t0
extqh t5, a1, t5
or t2, t3, t2
extql t6, a1, t6
or t4, t5, t4
extqh t7, a1, t7
or t6, t7, t6
stq t0, 0(a0)
stq t2, 0(t8)
stq t4, 0(t9)
subq a3, 4, a3
stq t6, 0(ta)
addq ta, a2, a0
bne a3, $unaligned
ret
.align 4
$aligned:
ldq t0, 0(a1)
addq a1, a2, a1
ldq t1, 0(a1)
addq a1, a2, a1
ldq t2, 0(a1)
addq a1, a2, a1
ldq t3, 0(a1)
addq a0, a2, t4
addq a1, a2, a1
addq t4, a2, t5
subq a3, 4, a3
stq t0, 0(a0)
addq t5, a2, t6
stq t1, 0(t4)
addq t6, a2, a0
stq t2, 0(t5)
stq t3, 0(t6)
bne a3, $aligned
ret
.end put_pixels_axp_asm
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