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