diff options
Diffstat (limited to 'libavcodec/alpha/idctdsp_alpha_asm.S')
| -rw-r--r-- | libavcodec/alpha/idctdsp_alpha_asm.S | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/libavcodec/alpha/idctdsp_alpha_asm.S b/libavcodec/alpha/idctdsp_alpha_asm.S new file mode 100644 index 0000000..f545df9 --- /dev/null +++ b/libavcodec/alpha/idctdsp_alpha_asm.S @@ -0,0 +1,167 @@ +/* + * Alpha optimized IDCT-related routines + * 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" + + .set noat + .set noreorder + .arch pca56 + .text + +/************************************************************************ + * void put_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels, + * ptrdiff_t 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 int16_t *block, uint8_t *pixels, + * ptrdiff_t 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 |
