271 lines
6.9 KiB
ArmAsm
271 lines
6.9 KiB
ArmAsm
/*
|
|
* Alpha optimized DSP utils
|
|
* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; 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
|
|
|
|
/************************************************************************
|
|
* void put_pixels_clamped_mvi_asm(const DCTELEM *block, uint8_t *pixels,
|
|
* int line_size)
|
|
*/
|
|
.align 6
|
|
.globl put_pixels_clamped_mvi_asm
|
|
.ent put_pixels_clamped_mvi_asm
|
|
put_pixels_clamped_mvi_asm:
|
|
.frame sp, 0, ra
|
|
.prologue 0
|
|
|
|
lda t8, -1
|
|
lda t9, 8 # loop counter
|
|
zap t8, 0xaa, t8 # 00ff00ff00ff00ff
|
|
|
|
.align 4
|
|
1: ldq t0, 0(a0)
|
|
ldq t1, 8(a0)
|
|
ldq t2, 16(a0)
|
|
ldq t3, 24(a0)
|
|
|
|
maxsw4 t0, zero, t0
|
|
subq t9, 2, t9
|
|
maxsw4 t1, zero, t1
|
|
lda a0, 32(a0)
|
|
|
|
maxsw4 t2, zero, t2
|
|
addq a1, a2, ta
|
|
maxsw4 t3, zero, t3
|
|
minsw4 t0, t8, t0
|
|
|
|
minsw4 t1, t8, t1
|
|
minsw4 t2, t8, t2
|
|
minsw4 t3, t8, t3
|
|
pkwb t0, t0
|
|
|
|
pkwb t1, t1
|
|
pkwb t2, t2
|
|
pkwb t3, t3
|
|
stl t0, 0(a1)
|
|
|
|
stl t1, 4(a1)
|
|
addq ta, a2, a1
|
|
stl t2, 0(ta)
|
|
stl t3, 4(ta)
|
|
|
|
bne t9, 1b
|
|
ret
|
|
.end put_pixels_clamped_mvi_asm
|
|
|
|
/************************************************************************
|
|
* void add_pixels_clamped_mvi_asm(const DCTELEM *block, uint8_t *pixels,
|
|
* int line_size)
|
|
*/
|
|
.align 6
|
|
.globl add_pixels_clamped_mvi_asm
|
|
.ent add_pixels_clamped_mvi_asm
|
|
add_pixels_clamped_mvi_asm:
|
|
.frame sp, 0, ra
|
|
.prologue 0
|
|
|
|
lda t1, -1
|
|
lda th, 8
|
|
zap t1, 0x33, tg
|
|
nop
|
|
|
|
srl tg, 1, t0
|
|
xor tg, t0, tg # 0x8000800080008000
|
|
zap t1, 0xaa, tf # 0x00ff00ff00ff00ff
|
|
|
|
.align 4
|
|
1: ldl t1, 0(a1) # pix0 (try to hit cache line soon)
|
|
ldl t4, 4(a1) # pix1
|
|
addq a1, a2, te # pixels += line_size
|
|
ldq t0, 0(a0) # shorts0
|
|
|
|
ldl t7, 0(te) # pix2 (try to hit cache line soon)
|
|
ldl ta, 4(te) # pix3
|
|
ldq t3, 8(a0) # shorts1
|
|
ldq t6, 16(a0) # shorts2
|
|
|
|
ldq t9, 24(a0) # shorts3
|
|
unpkbw t1, t1 # 0 0 (quarter/op no.)
|
|
and t0, tg, t2 # 0 1
|
|
unpkbw t4, t4 # 1 0
|
|
|
|
bic t0, tg, t0 # 0 2
|
|
unpkbw t7, t7 # 2 0
|
|
and t3, tg, t5 # 1 1
|
|
addq t0, t1, t0 # 0 3
|
|
|
|
xor t0, t2, t0 # 0 4
|
|
unpkbw ta, ta # 3 0
|
|
and t6, tg, t8 # 2 1
|
|
maxsw4 t0, zero, t0 # 0 5
|
|
|
|
bic t3, tg, t3 # 1 2
|
|
bic t6, tg, t6 # 2 2
|
|
minsw4 t0, tf, t0 # 0 6
|
|
addq t3, t4, t3 # 1 3
|
|
|
|
pkwb t0, t0 # 0 7
|
|
xor t3, t5, t3 # 1 4
|
|
maxsw4 t3, zero, t3 # 1 5
|
|
addq t6, t7, t6 # 2 3
|
|
|
|
xor t6, t8, t6 # 2 4
|
|
and t9, tg, tb # 3 1
|
|
minsw4 t3, tf, t3 # 1 6
|
|
bic t9, tg, t9 # 3 2
|
|
|
|
maxsw4 t6, zero, t6 # 2 5
|
|
addq t9, ta, t9 # 3 3
|
|
stl t0, 0(a1) # 0 8
|
|
minsw4 t6, tf, t6 # 2 6
|
|
|
|
xor t9, tb, t9 # 3 4
|
|
maxsw4 t9, zero, t9 # 3 5
|
|
lda a0, 32(a0) # block += 16;
|
|
pkwb t3, t3 # 1 7
|
|
|
|
minsw4 t9, tf, t9 # 3 6
|
|
subq th, 2, th
|
|
pkwb t6, t6 # 2 7
|
|
pkwb t9, t9 # 3 7
|
|
|
|
stl t3, 4(a1) # 1 8
|
|
addq te, a2, a1 # pixels += line_size
|
|
stl t6, 0(te) # 2 8
|
|
stl t9, 4(te) # 3 8
|
|
|
|
bne th, 1b
|
|
ret
|
|
.end add_pixels_clamped_mvi_asm
|