| /* | |
| * Alpha optimized IDCT-related routines | |
| * Copyright (c) 2002 Falk Hueffner <[email protected]> | |
| * | |
| * 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" | |
| noat | |
| noreorder | |
| .arch pca56 | |
| /************************************************************************ | |
| * void put_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels, | |
| * ptrdiff_t line_size) | |
| */ | |
| 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 | |
| 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 | |
| put_pixels_clamped_mvi_asm | |
| /************************************************************************ | |
| * void add_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels, | |
| * ptrdiff_t line_size) | |
| */ | |
| 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 | |
| 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 | |
| add_pixels_clamped_mvi_asm | |