1 /* 2 * Copyright (c) 2012 3 * MIPS Technologies, Inc., California. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * Author: Bojan Zivkovic (bojan@mips.com) 30 * 31 * MPEG Audio decoder optimized for MIPS fixed-point architecture 32 * 33 * This file is part of FFmpeg. 34 * 35 * FFmpeg is free software; you can redistribute it and/or 36 * modify it under the terms of the GNU Lesser General Public 37 * License as published by the Free Software Foundation; either 38 * version 2.1 of the License, or (at your option) any later version. 39 * 40 * FFmpeg is distributed in the hope that it will be useful, 41 * but WITHOUT ANY WARRANTY; without even the implied warranty of 42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 43 * Lesser General Public License for more details. 44 * 45 * You should have received a copy of the GNU Lesser General Public 46 * License along with FFmpeg; if not, write to the Free Software 47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 48 */ 49 50/** 51 * @file 52 * Reference: libavcodec/mpegaudiodsp_template.c 53 */ 54 55#include <string.h> 56 57#include "libavcodec/mpegaudiodsp.h" 58 59static void ff_mpadsp_apply_window_mips_fixed(int32_t *synth_buf, int32_t *window, 60 int *dither_state, int16_t *samples, int incr) 61{ 62 register const int32_t *w, *w2, *p; 63 int j; 64 int16_t *samples2; 65 int w_asm, p_asm, w_asm1, p_asm1, w_asm2, p_asm2; 66 int w2_asm, w2_asm1, *p_temp1, *p_temp2; 67 int sum1 = 0; 68 int const min_asm = -32768, max_asm = 32767; 69 int temp1, temp2 = 0, temp3 = 0; 70 int64_t sum; 71 72 /* copy to avoid wrap */ 73 memcpy(synth_buf + 512, synth_buf, 32 * sizeof(*synth_buf)); 74 samples2 = samples + 31 * incr; 75 w = window; 76 w2 = window + 31; 77 sum = *dither_state; 78 p = synth_buf + 16; 79 p_temp1 = synth_buf + 16; 80 p_temp2 = synth_buf + 48; 81 temp1 = sum; 82 83 /** 84 * use of round_sample function from the original code is eliminated, 85 * changed with appropriate assembly instructions. 86 */ 87 __asm__ volatile ( 88 "mthi $zero \n\t" 89 "mtlo %[temp1] \n\t" 90 "lw %[w_asm], 0(%[w]) \n\t" 91 "lw %[p_asm], 0(%[p]) \n\t" 92 "lw %[w_asm1], 64*4(%[w]) \n\t" 93 "lw %[p_asm1], 64*4(%[p]) \n\t" 94 "lw %[w_asm2], 128*4(%[w]) \n\t" 95 "lw %[p_asm2], 128*4(%[p]) \n\t" 96 "madd %[w_asm], %[p_asm] \n\t" 97 "madd %[w_asm1], %[p_asm1] \n\t" 98 "madd %[w_asm2], %[p_asm2] \n\t" 99 "lw %[w_asm], 192*4(%[w]) \n\t" 100 "lw %[p_asm], 192*4(%[p]) \n\t" 101 "lw %[w_asm1], 256*4(%[w]) \n\t" 102 "lw %[p_asm1], 256*4(%[p]) \n\t" 103 "lw %[w_asm2], 320*4(%[w]) \n\t" 104 "lw %[p_asm2], 320*4(%[p]) \n\t" 105 "madd %[w_asm], %[p_asm] \n\t" 106 "madd %[w_asm1], %[p_asm1] \n\t" 107 "madd %[w_asm2], %[p_asm2] \n\t" 108 "lw %[w_asm], 384*4(%[w]) \n\t" 109 "lw %[p_asm], 384*4(%[p]) \n\t" 110 "lw %[w_asm1], 448*4(%[w]) \n\t" 111 "lw %[p_asm1], 448*4(%[p]) \n\t" 112 "lw %[w_asm2], 32*4(%[w]) \n\t" 113 "lw %[p_asm2], 32*4(%[p]) \n\t" 114 "madd %[w_asm], %[p_asm] \n\t" 115 "madd %[w_asm1], %[p_asm1] \n\t" 116 "msub %[w_asm2], %[p_asm2] \n\t" 117 "lw %[w_asm], 96*4(%[w]) \n\t" 118 "lw %[p_asm], 96*4(%[p]) \n\t" 119 "lw %[w_asm1], 160*4(%[w]) \n\t" 120 "lw %[p_asm1], 160*4(%[p]) \n\t" 121 "lw %[w_asm2], 224*4(%[w]) \n\t" 122 "lw %[p_asm2], 224*4(%[p]) \n\t" 123 "msub %[w_asm], %[p_asm] \n\t" 124 "msub %[w_asm1], %[p_asm1] \n\t" 125 "msub %[w_asm2], %[p_asm2] \n\t" 126 "lw %[w_asm], 288*4(%[w]) \n\t" 127 "lw %[p_asm], 288*4(%[p]) \n\t" 128 "lw %[w_asm1], 352*4(%[w]) \n\t" 129 "lw %[p_asm1], 352*4(%[p]) \n\t" 130 "msub %[w_asm], %[p_asm] \n\t" 131 "lw %[w_asm], 480*4(%[w]) \n\t" 132 "lw %[p_asm], 480*4(%[p]) \n\t" 133 "lw %[w_asm2], 416*4(%[w]) \n\t" 134 "lw %[p_asm2], 416*4(%[p]) \n\t" 135 "msub %[w_asm], %[p_asm] \n\t" 136 "msub %[w_asm1], %[p_asm1] \n\t" 137 "msub %[w_asm2], %[p_asm2] \n\t" 138 139 /*round_sample function from the original code is eliminated, 140 * changed with appropriate assembly instructions 141 * code example: 142 143 "extr.w %[sum1],$ac0,24 \n\t" 144 "mflo %[temp3], $ac0 \n\t" 145 "and %[temp1], %[temp3], 0x00ffffff \n\t" 146 "slt %[temp2], %[sum1], %[min_asm] \n\t" 147 "movn %[sum1], %[min_asm],%[temp2] \n\t" 148 "slt %[temp2], %[max_asm],%[sum1] \n\t" 149 "movn %[sum1], %[max_asm],%[temp2] \n\t" 150 "sh %[sum1], 0(%[samples]) \n\t" 151 */ 152 153 "extr.w %[sum1], $ac0, 24 \n\t" 154 "mflo %[temp3] \n\t" 155 "addi %[w], %[w], 4 \n\t" 156 "and %[temp1], %[temp3], 0x00ffffff \n\t" 157 "slt %[temp2], %[sum1], %[min_asm] \n\t" 158 "movn %[sum1], %[min_asm], %[temp2] \n\t" 159 "slt %[temp2], %[max_asm], %[sum1] \n\t" 160 "movn %[sum1], %[max_asm], %[temp2] \n\t" 161 "sh %[sum1], 0(%[samples]) \n\t" 162 163 : [w_asm] "=&r" (w_asm), [p_asm] "=&r" (p_asm), [w_asm1] "=&r" (w_asm1), 164 [p_asm1] "=&r" (p_asm1), [temp1] "+r" (temp1), [temp2] "+r" (temp2), 165 [w_asm2] "=&r" (w_asm2), [p_asm2] "=&r" (p_asm2), 166 [sum1] "+r" (sum1), [w] "+r" (w), [temp3] "+r" (temp3) 167 : [p] "r" (p), [samples] "r" (samples), [min_asm] "r" (min_asm), 168 [max_asm] "r" (max_asm) 169 : "memory", "hi","lo" 170 ); 171 172 samples += incr; 173 174 /* we calculate two samples at the same time to avoid one memory 175 access per two sample */ 176 177 for(j = 1; j < 16; j++) { 178 __asm__ volatile ( 179 "mthi $0, $ac1 \n\t" 180 "mtlo $0, $ac1 \n\t" 181 "mthi $0 \n\t" 182 "mtlo %[temp1] \n\t" 183 "addi %[p_temp1], %[p_temp1], 4 \n\t" 184 "lw %[w_asm], 0(%[w]) \n\t" 185 "lw %[p_asm], 0(%[p_temp1]) \n\t" 186 "lw %[w2_asm], 0(%[w2]) \n\t" 187 "lw %[w_asm1], 64*4(%[w]) \n\t" 188 "lw %[p_asm1], 64*4(%[p_temp1]) \n\t" 189 "lw %[w2_asm1], 64*4(%[w2]) \n\t" 190 "madd %[w_asm], %[p_asm] \n\t" 191 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 192 "madd %[w_asm1], %[p_asm1] \n\t" 193 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 194 "lw %[w_asm], 128*4(%[w]) \n\t" 195 "lw %[p_asm], 128*4(%[p_temp1]) \n\t" 196 "lw %[w2_asm], 128*4(%[w2]) \n\t" 197 "lw %[w_asm1], 192*4(%[w]) \n\t" 198 "lw %[p_asm1], 192*4(%[p_temp1]) \n\t" 199 "lw %[w2_asm1], 192*4(%[w2]) \n\t" 200 "madd %[w_asm], %[p_asm] \n\t" 201 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 202 "madd %[w_asm1], %[p_asm1] \n\t" 203 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 204 "lw %[w_asm], 256*4(%[w]) \n\t" 205 "lw %[p_asm], 256*4(%[p_temp1]) \n\t" 206 "lw %[w2_asm], 256*4(%[w2]) \n\t" 207 "lw %[w_asm1], 320*4(%[w]) \n\t" 208 "lw %[p_asm1], 320*4(%[p_temp1]) \n\t" 209 "lw %[w2_asm1], 320*4(%[w2]) \n\t" 210 "madd %[w_asm], %[p_asm] \n\t" 211 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 212 "madd %[w_asm1], %[p_asm1] \n\t" 213 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 214 "lw %[w_asm], 384*4(%[w]) \n\t" 215 "lw %[p_asm], 384*4(%[p_temp1]) \n\t" 216 "lw %[w2_asm], 384*4(%[w2]) \n\t" 217 "lw %[w_asm1], 448*4(%[w]) \n\t" 218 "lw %[p_asm1], 448*4(%[p_temp1]) \n\t" 219 "lw %[w2_asm1], 448*4(%[w2]) \n\t" 220 "madd %[w_asm], %[p_asm] \n\t" 221 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 222 "madd %[w_asm1], %[p_asm1] \n\t" 223 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 224 "addi %[p_temp2], %[p_temp2], -4 \n\t" 225 "lw %[w_asm], 32*4(%[w]) \n\t" 226 "lw %[p_asm], 0(%[p_temp2]) \n\t" 227 "lw %[w2_asm], 32*4(%[w2]) \n\t" 228 "lw %[w_asm1], 96*4(%[w]) \n\t" 229 "lw %[p_asm1], 64*4(%[p_temp2]) \n\t" 230 "lw %[w2_asm1], 96*4(%[w2]) \n\t" 231 "msub %[w_asm], %[p_asm] \n\t" 232 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 233 "msub %[w_asm1], %[p_asm1] \n\t" 234 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 235 "lw %[w_asm], 160*4(%[w]) \n\t" 236 "lw %[p_asm], 128*4(%[p_temp2]) \n\t" 237 "lw %[w2_asm], 160*4(%[w2]) \n\t" 238 "lw %[w_asm1], 224*4(%[w]) \n\t" 239 "lw %[p_asm1], 192*4(%[p_temp2]) \n\t" 240 "lw %[w2_asm1], 224*4(%[w2]) \n\t" 241 "msub %[w_asm], %[p_asm] \n\t" 242 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 243 "msub %[w_asm1], %[p_asm1] \n\t" 244 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 245 "lw %[w_asm], 288*4(%[w]) \n\t" 246 "lw %[p_asm], 256*4(%[p_temp2]) \n\t" 247 "lw %[w2_asm], 288*4(%[w2]) \n\t" 248 "lw %[w_asm1], 352*4(%[w]) \n\t" 249 "lw %[p_asm1], 320*4(%[p_temp2]) \n\t" 250 "lw %[w2_asm1], 352*4(%[w2]) \n\t" 251 "msub %[w_asm], %[p_asm] \n\t" 252 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 253 "msub %[w_asm1], %[p_asm1] \n\t" 254 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 255 "lw %[w_asm], 416*4(%[w]) \n\t" 256 "lw %[p_asm], 384*4(%[p_temp2]) \n\t" 257 "lw %[w2_asm], 416*4(%[w2]) \n\t" 258 "lw %[w_asm1], 480*4(%[w]) \n\t" 259 "lw %[p_asm1], 448*4(%[p_temp2]) \n\t" 260 "lw %[w2_asm1], 480*4(%[w2]) \n\t" 261 "msub %[w_asm], %[p_asm] \n\t" 262 "msub %[w_asm1], %[p_asm1] \n\t" 263 "msub $ac1, %[w2_asm], %[p_asm] \n\t" 264 "msub $ac1, %[w2_asm1], %[p_asm1] \n\t" 265 "addi %[w], %[w], 4 \n\t" 266 "addi %[w2], %[w2], -4 \n\t" 267 "mflo %[temp2] \n\t" 268 "extr.w %[sum1], $ac0, 24 \n\t" 269 "li %[temp3], 1 \n\t" 270 "and %[temp1], %[temp2], 0x00ffffff \n\t" 271 "madd $ac1, %[temp1], %[temp3] \n\t" 272 "slt %[temp2], %[sum1], %[min_asm] \n\t" 273 "movn %[sum1], %[min_asm], %[temp2] \n\t" 274 "slt %[temp2], %[max_asm], %[sum1] \n\t" 275 "movn %[sum1], %[max_asm], %[temp2] \n\t" 276 "sh %[sum1], 0(%[samples]) \n\t" 277 "mflo %[temp3], $ac1 \n\t" 278 "extr.w %[sum1], $ac1, 24 \n\t" 279 "and %[temp1], %[temp3], 0x00ffffff \n\t" 280 "slt %[temp2], %[sum1], %[min_asm] \n\t" 281 "movn %[sum1], %[min_asm], %[temp2] \n\t" 282 "slt %[temp2], %[max_asm], %[sum1] \n\t" 283 "movn %[sum1], %[max_asm], %[temp2] \n\t" 284 "sh %[sum1], 0(%[samples2]) \n\t" 285 286 : [w_asm] "=&r" (w_asm), [p_asm] "=&r" (p_asm), [w_asm1] "=&r" (w_asm1), 287 [p_asm1] "=&r" (p_asm1), [w2_asm1] "=&r" (w2_asm1), 288 [w2_asm] "=&r" (w2_asm), [temp1] "+r" (temp1), [temp2] "+r" (temp2), 289 [p_temp1] "+r" (p_temp1), [p_temp2] "+r" (p_temp2), [sum1] "+r" (sum1), 290 [w] "+r" (w), [w2] "+r" (w2), [samples] "+r" (samples), 291 [samples2] "+r" (samples2), [temp3] "+r" (temp3) 292 : [min_asm] "r" (min_asm), [max_asm] "r" (max_asm) 293 : "memory", "hi", "lo", "$ac1hi", "$ac1lo" 294 ); 295 296 samples += incr; 297 samples2 -= incr; 298 } 299 300 p = synth_buf + 32; 301 302 __asm__ volatile ( 303 "mthi $0 \n\t" 304 "mtlo %[temp1] \n\t" 305 "lw %[w_asm], 32*4(%[w]) \n\t" 306 "lw %[p_asm], 0(%[p]) \n\t" 307 "lw %[w_asm1], 96*4(%[w]) \n\t" 308 "lw %[p_asm1], 64*4(%[p]) \n\t" 309 "lw %[w_asm2], 160*4(%[w]) \n\t" 310 "lw %[p_asm2], 128*4(%[p]) \n\t" 311 "msub %[w_asm], %[p_asm] \n\t" 312 "msub %[w_asm1], %[p_asm1] \n\t" 313 "msub %[w_asm2], %[p_asm2] \n\t" 314 "lw %[w_asm], 224*4(%[w]) \n\t" 315 "lw %[p_asm], 192*4(%[p]) \n\t" 316 "lw %[w_asm1], 288*4(%[w]) \n\t" 317 "lw %[p_asm1], 256*4(%[p]) \n\t" 318 "lw %[w_asm2], 352*4(%[w]) \n\t" 319 "lw %[p_asm2], 320*4(%[p]) \n\t" 320 "msub %[w_asm], %[p_asm] \n\t" 321 "msub %[w_asm1], %[p_asm1] \n\t" 322 "msub %[w_asm2], %[p_asm2] \n\t" 323 "lw %[w_asm], 416*4(%[w]) \n\t" 324 "lw %[p_asm], 384*4(%[p]) \n\t" 325 "lw %[w_asm1], 480*4(%[w]) \n\t" 326 "lw %[p_asm1], 448*4(%[p]) \n\t" 327 "msub %[w_asm], %[p_asm] \n\t" 328 "msub %[w_asm1], %[p_asm1] \n\t" 329 "extr.w %[sum1], $ac0, 24 \n\t" 330 "mflo %[temp2] \n\t" 331 "and %[temp1], %[temp2], 0x00ffffff \n\t" 332 "slt %[temp2], %[sum1], %[min_asm] \n\t" 333 "movn %[sum1], %[min_asm], %[temp2] \n\t" 334 "slt %[temp2], %[max_asm], %[sum1] \n\t" 335 "movn %[sum1], %[max_asm], %[temp2] \n\t" 336 "sh %[sum1], 0(%[samples]) \n\t" 337 338 : [w_asm] "=&r" (w_asm), [p_asm] "=&r" (p_asm), [w_asm1] "=&r" (w_asm1), 339 [p_asm1] "=&r" (p_asm1), [temp1] "+r" (temp1), [temp2] "+r" (temp2), 340 [w_asm2] "=&r" (w_asm2), [p_asm2] "=&r" (p_asm2), [sum1] "+r" (sum1) 341 : [w] "r" (w), [p] "r" (p), [samples] "r" (samples), [min_asm] "r" (min_asm), 342 [max_asm] "r" (max_asm) 343 : "memory", "hi", "lo", "$ac1hi", "$ac1lo" 344 ); 345 346 *dither_state= temp1; 347} 348 349static void imdct36_mips_fixed(int *out, int *buf, int *in, int *win) 350{ 351 int j; 352 int t0, t1, t2, t3, s0, s1, s2, s3; 353 int tmp[18], *tmp1, *in1; 354 /* temporary variables */ 355 int temp_reg1, temp_reg2, temp_reg3, temp_reg4, temp_reg5, temp_reg6; 356 int t4, t5, t6, t8, t7; 357 358 /* values defined in macros and tables are 359 * eliminated - they are directly loaded in appropriate variables 360 */ 361 int const C_1 = 4229717092; /* cos(pi*1/18)*2 */ 362 int const C_2 = 4035949074; /* cos(pi*2/18)*2 */ 363 int const C_3 = 575416510; /* -cos(pi*3/18)*2 */ 364 int const C_3A = 3719550786; /* cos(pi*3/18)*2 */ 365 int const C_4 = 1004831466; /* -cos(pi*4/18)*2 */ 366 int const C_5 = 1534215534; /* -cos(pi*5/18)*2 */ 367 int const C_7 = -1468965330; /* -cos(pi*7/18)*2 */ 368 int const C_8 = -745813244; /* -cos(pi*8/18)*2 */ 369 370 /* 371 * instructions of the first two loops are reorganized and loops are unrolled, 372 * in order to eliminate unnecessary readings and writings in array 373 */ 374 375 __asm__ volatile ( 376 "lw %[t1], 17*4(%[in]) \n\t" 377 "lw %[t2], 16*4(%[in]) \n\t" 378 "lw %[t3], 15*4(%[in]) \n\t" 379 "lw %[t4], 14*4(%[in]) \n\t" 380 "addu %[t1], %[t1], %[t2] \n\t" 381 "addu %[t2], %[t2], %[t3] \n\t" 382 "addu %[t3], %[t3], %[t4] \n\t" 383 "lw %[t5], 13*4(%[in]) \n\t" 384 "addu %[t1], %[t1], %[t3] \n\t" 385 "sw %[t2], 16*4(%[in]) \n\t" 386 "lw %[t6], 12*4(%[in]) \n\t" 387 "sw %[t1], 17*4(%[in]) \n\t" 388 "addu %[t4], %[t4], %[t5] \n\t" 389 "addu %[t5], %[t5], %[t6] \n\t" 390 "lw %[t7], 11*4(%[in]) \n\t" 391 "addu %[t3], %[t3], %[t5] \n\t" 392 "sw %[t4], 14*4(%[in]) \n\t" 393 "lw %[t8], 10*4(%[in]) \n\t" 394 "sw %[t3], 15*4(%[in]) \n\t" 395 "addu %[t6], %[t6], %[t7] \n\t" 396 "addu %[t7], %[t7], %[t8] \n\t" 397 "sw %[t6], 12*4(%[in]) \n\t" 398 "addu %[t5], %[t5], %[t7] \n\t" 399 "lw %[t1], 9*4(%[in]) \n\t" 400 "lw %[t2], 8*4(%[in]) \n\t" 401 "sw %[t5], 13*4(%[in]) \n\t" 402 "addu %[t8], %[t8], %[t1] \n\t" 403 "addu %[t1], %[t1], %[t2] \n\t" 404 "sw %[t8], 10*4(%[in]) \n\t" 405 "addu %[t7], %[t7], %[t1] \n\t" 406 "lw %[t3], 7*4(%[in]) \n\t" 407 "lw %[t4], 6*4(%[in]) \n\t" 408 "sw %[t7], 11*4(%[in]) \n\t" 409 "addu %[t2], %[t2], %[t3] \n\t" 410 "addu %[t3], %[t3], %[t4] \n\t" 411 "sw %[t2], 8*4(%[in]) \n\t" 412 "addu %[t1], %[t1], %[t3] \n\t" 413 "lw %[t5], 5*4(%[in]) \n\t" 414 "lw %[t6], 4*4(%[in]) \n\t" 415 "sw %[t1], 9*4(%[in]) \n\t" 416 "addu %[t4], %[t4], %[t5] \n\t" 417 "addu %[t5], %[t5], %[t6] \n\t" 418 "sw %[t4], 6*4(%[in]) \n\t" 419 "addu %[t3], %[t3], %[t5] \n\t" 420 "lw %[t7], 3*4(%[in]) \n\t" 421 "lw %[t8], 2*4(%[in]) \n\t" 422 "sw %[t3], 7*4(%[in]) \n\t" 423 "addu %[t6], %[t6], %[t7] \n\t" 424 "addu %[t7], %[t7], %[t8] \n\t" 425 "sw %[t6], 4*4(%[in]) \n\t" 426 "addu %[t5], %[t5], %[t7] \n\t" 427 "lw %[t1], 1*4(%[in]) \n\t" 428 "lw %[t2], 0*4(%[in]) \n\t" 429 "sw %[t5], 5*4(%[in]) \n\t" 430 "addu %[t8], %[t8], %[t1] \n\t" 431 "addu %[t1], %[t1], %[t2] \n\t" 432 "sw %[t8], 2*4(%[in]) \n\t" 433 "addu %[t7], %[t7], %[t1] \n\t" 434 "sw %[t7], 3*4(%[in]) \n\t" 435 "sw %[t1], 1*4(%[in]) \n\t" 436 437 : [in] "+r" (in), [t1] "=&r" (t1), [t2] "=&r" (t2), [t3] "=&r" (t3), 438 [t4] "=&r" (t4), [t5] "=&r" (t5), [t6] "=&r" (t6), 439 [t7] "=&r" (t7), [t8] "=&r" (t8) 440 : 441 : "memory" 442 ); 443 444 for(j = 0; j < 2; j++) { 445 446 tmp1 = tmp + j; 447 in1 = in + j; 448 449 /** 450 * Original constants are multiplied by two in advanced 451 * for assembly optimization (e.g. C_2 = 2 * C2). 452 * That can lead to overflow in operations where they are used. 453 * 454 * Example of the solution: 455 * 456 * in original code: 457 * t0 = ((int64_t)(in1[2*2] + in1[2*4]) * (int64_t)(2*C2))>>32 458 * 459 * in assembly: 460 * C_2 = 2 * C2; 461 * . 462 * . 463 * "lw %[t7], 4*4(%[in1]) \n\t" 464 * "lw %[t8], 8*4(%[in1]) \n\t" 465 * "addu %[temp_reg2],%[t7], %[t8] \n\t" 466 * "multu %[C_2], %[temp_reg2] \n\t" 467 * "mfhi %[temp_reg1] \n\t" 468 * "sra %[temp_reg2],%[temp_reg2],31 \n\t" 469 * "move %[t0], $0 \n\t" 470 * "movn %[t0], %[C_2], %[temp_reg2] \n\t" 471 * "sub %[t0], %[temp_reg1],%[t0] \n\t" 472 */ 473 474 __asm__ volatile ( 475 "lw %[t7], 4*4(%[in1]) \n\t" 476 "lw %[t8], 8*4(%[in1]) \n\t" 477 "lw %[t6], 16*4(%[in1]) \n\t" 478 "lw %[t4], 0*4(%[in1]) \n\t" 479 "addu %[temp_reg2], %[t7], %[t8] \n\t" 480 "addu %[t2], %[t6], %[t8] \n\t" 481 "multu %[C_2], %[temp_reg2] \n\t" 482 "lw %[t5], 12*4(%[in1]) \n\t" 483 "sub %[t2], %[t2], %[t7] \n\t" 484 "sub %[t1], %[t4], %[t5] \n\t" 485 "sra %[t3], %[t5], 1 \n\t" 486 "sra %[temp_reg1], %[t2], 1 \n\t" 487 "addu %[t3], %[t3], %[t4] \n\t" 488 "sub %[temp_reg1], %[t1], %[temp_reg1] \n\t" 489 "sra %[temp_reg2], %[temp_reg2], 31 \n\t" 490 "sw %[temp_reg1], 6*4(%[tmp1]) \n\t" 491 "move %[t0], $0 \n\t" 492 "movn %[t0], %[C_2], %[temp_reg2] \n\t" 493 "mfhi %[temp_reg1] \n\t" 494 "addu %[t1], %[t1], %[t2] \n\t" 495 "sw %[t1], 16*4(%[tmp1]) \n\t" 496 "sub %[temp_reg4], %[t8], %[t6] \n\t" 497 "add %[temp_reg2], %[t7], %[t6] \n\t" 498 "mult $ac1, %[C_8], %[temp_reg4] \n\t" 499 "multu $ac2, %[C_4], %[temp_reg2] \n\t" 500 "sub %[t0], %[temp_reg1], %[t0] \n\t" 501 "sra %[temp_reg1], %[temp_reg2], 31 \n\t" 502 "move %[t2], $0 \n\t" 503 "movn %[t2], %[C_4], %[temp_reg1] \n\t" 504 "mfhi %[t1], $ac1 \n\t" 505 "mfhi %[temp_reg1], $ac2 \n\t" 506 "lw %[t6], 10*4(%[in1]) \n\t" 507 "lw %[t8], 14*4(%[in1]) \n\t" 508 "lw %[t7], 2*4(%[in1]) \n\t" 509 "lw %[t4], 6*4(%[in1]) \n\t" 510 "sub %[temp_reg3], %[t3], %[t0] \n\t" 511 "add %[temp_reg4], %[t3], %[t0] \n\t" 512 "sub %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 513 "add %[temp_reg4], %[temp_reg4], %[t1] \n\t" 514 "sub %[t2], %[temp_reg1], %[t2] \n\t" 515 "sw %[temp_reg4], 2*4(%[tmp1]) \n\t" 516 "sub %[temp_reg3], %[temp_reg3], %[t2] \n\t" 517 "add %[temp_reg1], %[t3], %[t2] \n\t" 518 "sw %[temp_reg3], 10*4(%[tmp1]) \n\t" 519 "sub %[temp_reg1], %[temp_reg1], %[t1] \n\t" 520 "addu %[temp_reg2], %[t6], %[t8] \n\t" 521 "sw %[temp_reg1], 14*4(%[tmp1]) \n\t" 522 "sub %[temp_reg2], %[temp_reg2], %[t7] \n\t" 523 "addu %[temp_reg3], %[t7], %[t6] \n\t" 524 "multu $ac3, %[C_3], %[temp_reg2] \n\t" 525 "multu %[C_1], %[temp_reg3] \n\t" 526 "sra %[temp_reg1], %[temp_reg2], 31 \n\t" 527 "move %[t1], $0 \n\t" 528 "sra %[temp_reg3], %[temp_reg3], 31 \n\t" 529 "movn %[t1], %[C_3], %[temp_reg1] \n\t" 530 "mfhi %[temp_reg1], $ac3 \n\t" 531 "mfhi %[temp_reg4] \n\t" 532 "move %[t2], $0 \n\t" 533 "movn %[t2], %[C_1], %[temp_reg3] \n\t" 534 "sub %[temp_reg3], %[t6], %[t8] \n\t" 535 "sub %[t2], %[temp_reg4], %[t2] \n\t" 536 "multu $ac1, %[C_7], %[temp_reg3] \n\t" 537 "sub %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 538 "sra %[temp_reg4], %[temp_reg3], 31 \n\t" 539 "sub %[t1], %[temp_reg1], %[t1] \n\t" 540 "move %[t3], $0 \n\t" 541 "sw %[t1], 4*4(%[tmp1]) \n\t" 542 "movn %[t3], %[C_7], %[temp_reg4] \n\t" 543 "multu $ac2, %[C_3A], %[t4] \n\t" 544 "add %[temp_reg2], %[t7], %[t8] \n\t" 545 "move %[t1], $0 \n\t" 546 "mfhi %[temp_reg4], $ac1 \n\t" 547 "multu $ac3,%[C_5], %[temp_reg2] \n\t" 548 "move %[t0], $0 \n\t" 549 "sra %[temp_reg1], %[temp_reg2], 31 \n\t" 550 "movn %[t1],%[C_5], %[temp_reg1] \n\t" 551 "sub %[temp_reg4], %[temp_reg4], %[temp_reg3] \n\t" 552 "mfhi %[temp_reg1], $ac3 \n\t" 553 "sra %[temp_reg3], %[t4], 31 \n\t" 554 "movn %[t0], %[C_3A], %[temp_reg3] \n\t" 555 "mfhi %[temp_reg3], $ac2 \n\t" 556 "sub %[t3], %[temp_reg4], %[t3] \n\t" 557 "add %[temp_reg4], %[t3], %[t2] \n\t" 558 "sub %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 559 "sub %[t1], %[temp_reg1], %[t1] \n\t" 560 "sub %[t0], %[temp_reg3], %[t0] \n\t" 561 "add %[temp_reg1], %[t2], %[t1] \n\t" 562 "add %[temp_reg4], %[temp_reg4], %[t0] \n\t" 563 "sub %[temp_reg2], %[t3], %[t1] \n\t" 564 "sw %[temp_reg4], 0*4(%[tmp1]) \n\t" 565 "sub %[temp_reg1], %[temp_reg1], %[t0] \n\t" 566 "sub %[temp_reg2], %[temp_reg2], %[t0] \n\t" 567 "sw %[temp_reg1], 12*4(%[tmp1]) \n\t" 568 "sw %[temp_reg2], 8*4(%[tmp1]) \n\t" 569 570 : [t7] "=&r" (t7), [temp_reg1] "=&r" (temp_reg1), 571 [temp_reg2] "=&r" (temp_reg2), [temp_reg4] "=&r" (temp_reg4), 572 [temp_reg3] "=&r" (temp_reg3), [t8] "=&r" (t8), [t0] "=&r" (t0), 573 [t4] "=&r" (t4), [t5] "=&r" (t5), [t6] "=&r"(t6), [t2] "=&r" (t2), 574 [t3] "=&r" (t3), [t1] "=&r" (t1) 575 : [C_2] "r" (C_2), [in1] "r" (in1), [tmp1] "r" (tmp1), [C_8] "r" (C_8), 576 [C_4] "r" (C_4), [C_3] "r" (C_3), [C_1] "r" (C_1), [C_7] "r" (C_7), 577 [C_3A] "r" (C_3A), [C_5] "r" (C_5) 578 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", "$ac2hi", "$ac2lo", 579 "$ac3hi", "$ac3lo" 580 ); 581 } 582 583 /** 584 * loop is unrolled four times 585 * 586 * values defined in tables(icos36[] and icos36h[]) are not loaded from 587 * these tables - they are directly loaded in appropriate registers 588 * 589 */ 590 591 __asm__ volatile ( 592 "lw %[t2], 1*4(%[tmp]) \n\t" 593 "lw %[t3], 3*4(%[tmp]) \n\t" 594 "lw %[t0], 0*4(%[tmp]) \n\t" 595 "lw %[t1], 2*4(%[tmp]) \n\t" 596 "addu %[temp_reg1], %[t3], %[t2] \n\t" 597 "li %[temp_reg2], 0x807D2B1E \n\t" 598 "move %[s1], $0 \n\t" 599 "multu %[temp_reg2], %[temp_reg1] \n\t" 600 "sra %[temp_reg1], %[temp_reg1], 31 \n\t" 601 "movn %[s1], %[temp_reg2], %[temp_reg1] \n\t" 602 "sub %[temp_reg3], %[t3], %[t2] \n\t" 603 "li %[temp_reg4], 0x2de5151 \n\t" 604 "mfhi %[temp_reg2] \n\t" 605 "addu %[s0], %[t1], %[t0] \n\t" 606 "lw %[temp_reg5], 9*4(%[win]) \n\t" 607 "mult $ac1, %[temp_reg4], %[temp_reg3] \n\t" 608 "lw %[temp_reg6], 4*9*4(%[buf]) \n\t" 609 "sub %[s2], %[t1], %[t0] \n\t" 610 "lw %[temp_reg3], 29*4(%[win]) \n\t" 611 "subu %[s1], %[temp_reg2], %[s1] \n\t" 612 "lw %[temp_reg4], 28*4(%[win]) \n\t" 613 "add %[t0], %[s0], %[s1] \n\t" 614 "extr.w %[s3], $ac1,23 \n\t" 615 "mult $ac2, %[t0], %[temp_reg3] \n\t" 616 "sub %[t1], %[s0], %[s1] \n\t" 617 "lw %[temp_reg1], 4*8*4(%[buf]) \n\t" 618 "mult %[t1], %[temp_reg5] \n\t" 619 "lw %[temp_reg2], 8*4(%[win]) \n\t" 620 "mfhi %[temp_reg3], $ac2 \n\t" 621 "mult $ac3, %[t0], %[temp_reg4] \n\t" 622 "add %[t0], %[s2], %[s3] \n\t" 623 "mfhi %[temp_reg5] \n\t" 624 "mult $ac1, %[t1], %[temp_reg2] \n\t" 625 "sub %[t1], %[s2], %[s3] \n\t" 626 "sw %[temp_reg3], 4*9*4(%[buf]) \n\t" 627 "mfhi %[temp_reg4], $ac3 \n\t" 628 "lw %[temp_reg3], 37*4(%[win]) \n\t" 629 "mfhi %[temp_reg2], $ac1 \n\t" 630 "add %[temp_reg5], %[temp_reg5], %[temp_reg6] \n\t" 631 "lw %[temp_reg6], 17*4(%[win]) \n\t" 632 "sw %[temp_reg5], 32*9*4(%[out]) \n\t" 633 "sw %[temp_reg4], 4*8*4(%[buf]) \n\t" 634 "mult %[t1], %[temp_reg6] \n\t" 635 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 636 "lw %[temp_reg2], 0*4(%[win]) \n\t" 637 "lw %[temp_reg5], 4*17*4(%[buf]) \n\t" 638 "sw %[temp_reg1], 8*32*4(%[out]) \n\t" 639 "mfhi %[temp_reg6] \n\t" 640 "mult $ac1, %[t1], %[temp_reg2] \n\t" 641 "lw %[temp_reg4], 20*4(%[win]) \n\t" 642 "lw %[temp_reg1], 0(%[buf]) \n\t" 643 "mult $ac2, %[t0], %[temp_reg3] \n\t" 644 "mult %[t0], %[temp_reg4] \n\t" 645 "mfhi %[temp_reg2], $ac1 \n\t" 646 "lw %[t0], 4*4(%[tmp]) \n\t" 647 "add %[temp_reg5], %[temp_reg5], %[temp_reg6] \n\t" 648 "mfhi %[temp_reg3], $ac2 \n\t" 649 "mfhi %[temp_reg4] \n\t" 650 "sw %[temp_reg5], 17*32*4(%[out]) \n\t" 651 "lw %[t1], 6*4(%[tmp]) \n\t" 652 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 653 "lw %[t2], 5*4(%[tmp]) \n\t" 654 "sw %[temp_reg1], 0*32*4(%[out]) \n\t" 655 "addu %[s0], %[t1], %[t0] \n\t" 656 "sw %[temp_reg3], 4*17*4(%[buf]) \n\t" 657 "lw %[t3], 7*4(%[tmp]) \n\t" 658 "sub %[s2], %[t1], %[t0] \n\t" 659 "sw %[temp_reg4], 0(%[buf]) \n\t" 660 "addu %[temp_reg5], %[t3], %[t2] \n\t" 661 "li %[temp_reg6], 0x8483EE0C \n\t" 662 "move %[s1], $0 \n\t" 663 "multu %[temp_reg6], %[temp_reg5] \n\t" 664 "sub %[temp_reg1], %[t3], %[t2] \n\t" 665 "li %[temp_reg2], 0xf746ea \n\t" 666 "sra %[temp_reg5], %[temp_reg5], 31 \n\t" 667 "mult $ac1, %[temp_reg2], %[temp_reg1] \n\t" 668 "movn %[s1], %[temp_reg6], %[temp_reg5] \n\t" 669 "mfhi %[temp_reg5] \n\t" 670 "lw %[temp_reg3], 10*4(%[win]) \n\t" 671 "lw %[temp_reg4], 4*10*4(%[buf]) \n\t" 672 "extr.w %[s3], $ac1, 23 \n\t" 673 "lw %[temp_reg1], 4*7*4(%[buf]) \n\t" 674 "lw %[temp_reg2], 7*4(%[win]) \n\t" 675 "lw %[temp_reg6], 30*4(%[win]) \n\t" 676 "subu %[s1], %[temp_reg5], %[s1] \n\t" 677 "sub %[t1], %[s0], %[s1] \n\t" 678 "add %[t0], %[s0], %[s1] \n\t" 679 "mult $ac2, %[t1], %[temp_reg3] \n\t" 680 "mult $ac3, %[t1], %[temp_reg2] \n\t" 681 "mult %[t0], %[temp_reg6] \n\t" 682 "lw %[temp_reg5], 27*4(%[win]) \n\t" 683 "mult $ac1, %[t0], %[temp_reg5] \n\t" 684 "mfhi %[temp_reg3], $ac2 \n\t" 685 "mfhi %[temp_reg2], $ac3 \n\t" 686 "mfhi %[temp_reg6] \n\t" 687 "add %[t0], %[s2], %[s3] \n\t" 688 "sub %[t1], %[s2], %[s3] \n\t" 689 "add %[temp_reg3], %[temp_reg3], %[temp_reg4] \n\t" 690 "lw %[temp_reg4], 16*4(%[win]) \n\t" 691 "mfhi %[temp_reg5], $ac1 \n\t" 692 "sw %[temp_reg3], 32*10*4(%[out]) \n\t" 693 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 694 "lw %[temp_reg3], 4*16*4(%[buf]) \n\t" 695 "sw %[temp_reg6], 4*10*4(%[buf]) \n\t" 696 "sw %[temp_reg1], 7*32*4(%[out]) \n\t" 697 "mult $ac2, %[t1], %[temp_reg4] \n\t" 698 "sw %[temp_reg5], 4*7*4(%[buf]) \n\t" 699 "lw %[temp_reg6], 1*4(%[win]) \n\t" 700 "lw %[temp_reg5], 4*1*4(%[buf]) \n\t" 701 "lw %[temp_reg1], 36*4(%[win]) \n\t" 702 "mult $ac3, %[t1], %[temp_reg6] \n\t" 703 "lw %[temp_reg2], 21*4(%[win]) \n\t" 704 "mfhi %[temp_reg4], $ac2 \n\t" 705 "mult %[t0], %[temp_reg1] \n\t" 706 "mult $ac1, %[t0],%[temp_reg2] \n\t" 707 "lw %[t0], 8*4(%[tmp]) \n\t" 708 "mfhi %[temp_reg6], $ac3 \n\t" 709 "lw %[t1], 10*4(%[tmp]) \n\t" 710 "lw %[t3], 11*4(%[tmp]) \n\t" 711 "mfhi %[temp_reg1] \n\t" 712 "add %[temp_reg3], %[temp_reg3], %[temp_reg4] \n\t" 713 "lw %[t2], 9*4(%[tmp]) \n\t" 714 "mfhi %[temp_reg2], $ac1 \n\t" 715 "add %[temp_reg5], %[temp_reg5], %[temp_reg6] \n\t" 716 "sw %[temp_reg3], 16*32*4(%[out]) \n\t" 717 "sw %[temp_reg5], 1*32*4(%[out]) \n\t" 718 "sw %[temp_reg1], 4*16*4(%[buf]) \n\t" 719 "addu %[temp_reg3], %[t3], %[t2] \n\t" 720 "li %[temp_reg4], 0x8D3B7CD6 \n\t" 721 "sw %[temp_reg2], 4*1*4(%[buf]) \n\t" 722 "multu %[temp_reg4],%[temp_reg3] \n\t" 723 "sra %[temp_reg3], %[temp_reg3], 31 \n\t" 724 "move %[s1], $0 \n\t" 725 "movn %[s1], %[temp_reg4], %[temp_reg3] \n\t" 726 "addu %[s0], %[t1], %[t0] \n\t" 727 "mfhi %[temp_reg3] \n\t" 728 "sub %[s2], %[t1], %[t0] \n\t" 729 "sub %[temp_reg5], %[t3], %[t2] \n\t" 730 "li %[temp_reg6], 0x976fd9 \n\t" 731 "lw %[temp_reg2], 11*4(%[win]) \n\t" 732 "lw %[temp_reg1], 4*11*4(%[buf]) \n\t" 733 "mult $ac1, %[temp_reg6], %[temp_reg5] \n\t" 734 "subu %[s1], %[temp_reg3], %[s1] \n\t" 735 "lw %[temp_reg5], 31*4(%[win]) \n\t" 736 "sub %[t1], %[s0], %[s1] \n\t" 737 "add %[t0], %[s0], %[s1] \n\t" 738 "mult $ac2, %[t1], %[temp_reg2] \n\t" 739 "mult %[t0], %[temp_reg5] \n\t" 740 "lw %[temp_reg4], 6*4(%[win]) \n\t" 741 "extr.w %[s3], $ac1, 23 \n\t" 742 "lw %[temp_reg3], 4*6*4(%[buf]) \n\t" 743 "mfhi %[temp_reg2], $ac2 \n\t" 744 "lw %[temp_reg6], 26*4(%[win]) \n\t" 745 "mfhi %[temp_reg5] \n\t" 746 "mult $ac3, %[t1], %[temp_reg4] \n\t" 747 "mult $ac1, %[t0], %[temp_reg6] \n\t" 748 "add %[t0], %[s2], %[s3] \n\t" 749 "sub %[t1], %[s2], %[s3] \n\t" 750 "add %[temp_reg2], %[temp_reg2], %[temp_reg1] \n\t" 751 "mfhi %[temp_reg4], $ac3 \n\t" 752 "mfhi %[temp_reg6], $ac1 \n\t" 753 "sw %[temp_reg5], 4*11*4(%[buf]) \n\t" 754 "sw %[temp_reg2], 32*11*4(%[out]) \n\t" 755 "lw %[temp_reg1], 4*15*4(%[buf]) \n\t" 756 "add %[temp_reg3], %[temp_reg3], %[temp_reg4] \n\t" 757 "lw %[temp_reg2], 15*4(%[win]) \n\t" 758 "sw %[temp_reg3], 6*32*4(%[out]) \n\t" 759 "sw %[temp_reg6], 4*6*4(%[buf]) \n\t" 760 "mult %[t1], %[temp_reg2] \n\t" 761 "lw %[temp_reg3], 2*4(%[win]) \n\t" 762 "lw %[temp_reg4], 4*2*4(%[buf]) \n\t" 763 "lw %[temp_reg5], 35*4(%[win]) \n\t" 764 "mult $ac1, %[t1], %[temp_reg3] \n\t" 765 "mfhi %[temp_reg2] \n\t" 766 "lw %[temp_reg6], 22*4(%[win]) \n\t" 767 "mult $ac2, %[t0], %[temp_reg5] \n\t" 768 "lw %[t1], 14*4(%[tmp]) \n\t" 769 "mult $ac3, %[t0], %[temp_reg6] \n\t" 770 "lw %[t0], 12*4(%[tmp]) \n\t" 771 "mfhi %[temp_reg3], $ac1 \n\t" 772 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 773 "mfhi %[temp_reg5], $ac2 \n\t" 774 "sw %[temp_reg1], 15*32*4(%[out]) \n\t" 775 "mfhi %[temp_reg6], $ac3 \n\t" 776 "lw %[t2], 13*4(%[tmp]) \n\t" 777 "lw %[t3], 15*4(%[tmp]) \n\t" 778 "add %[temp_reg4], %[temp_reg4], %[temp_reg3] \n\t" 779 "sw %[temp_reg5], 4*15*4(%[buf]) \n\t" 780 "addu %[temp_reg1], %[t3], %[t2] \n\t" 781 "li %[temp_reg2], 0x9C42577C \n\t" 782 "move %[s1], $0 \n\t" 783 "multu %[temp_reg2], %[temp_reg1] \n\t" 784 "sw %[temp_reg4], 2*32*4(%[out]) \n\t" 785 "sra %[temp_reg1], %[temp_reg1], 31 \n\t" 786 "movn %[s1], %[temp_reg2], %[temp_reg1] \n\t" 787 "sub %[temp_reg3], %[t3], %[t2] \n\t" 788 "li %[temp_reg4], 0x6f94a2 \n\t" 789 "mfhi %[temp_reg1] \n\t" 790 "addu %[s0], %[t1], %[t0] \n\t" 791 "sw %[temp_reg6], 4*2*4(%[buf]) \n\t" 792 "mult $ac1, %[temp_reg4], %[temp_reg3] \n\t" 793 "sub %[s2], %[t1], %[t0] \n\t" 794 "lw %[temp_reg5], 12*4(%[win]) \n\t" 795 "lw %[temp_reg6], 4*12*4(%[buf]) \n\t" 796 "subu %[s1], %[temp_reg1], %[s1] \n\t" 797 "sub %[t1], %[s0], %[s1] \n\t" 798 "lw %[temp_reg3], 32*4(%[win]) \n\t" 799 "mult $ac2, %[t1], %[temp_reg5] \n\t" 800 "add %[t0], %[s0], %[s1] \n\t" 801 "extr.w %[s3], $ac1, 23 \n\t" 802 "lw %[temp_reg2], 5*4(%[win]) \n\t" 803 "mult %[t0], %[temp_reg3] \n\t" 804 "mfhi %[temp_reg5], $ac2 \n\t" 805 "lw %[temp_reg4], 25*4(%[win]) \n\t" 806 "lw %[temp_reg1], 4*5*4(%[buf]) \n\t" 807 "mult $ac3, %[t1], %[temp_reg2] \n\t" 808 "mult $ac1, %[t0], %[temp_reg4] \n\t" 809 "mfhi %[temp_reg3] \n\t" 810 "add %[t0], %[s2], %[s3] \n\t" 811 "add %[temp_reg5], %[temp_reg5], %[temp_reg6] \n\t" 812 "mfhi %[temp_reg2], $ac3 \n\t" 813 "mfhi %[temp_reg4], $ac1 \n\t" 814 "sub %[t1], %[s2], %[s3] \n\t" 815 "sw %[temp_reg5], 32*12*4(%[out]) \n\t" 816 "sw %[temp_reg3], 4*12*4(%[buf]) \n\t" 817 "lw %[temp_reg6], 14*4(%[win]) \n\t" 818 "lw %[temp_reg5], 4*14*4(%[buf]) \n\t" 819 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 820 "sw %[temp_reg4], 4*5*4(%[buf]) \n\t" 821 "sw %[temp_reg1], 5*32*4(%[out]) \n\t" 822 "mult %[t1], %[temp_reg6] \n\t" 823 "lw %[temp_reg4], 34*4(%[win]) \n\t" 824 "lw %[temp_reg2], 3*4(%[win]) \n\t" 825 "lw %[temp_reg1], 4*3*4(%[buf]) \n\t" 826 "mult $ac2, %[t0], %[temp_reg4] \n\t" 827 "mfhi %[temp_reg6] \n\t" 828 "mult $ac1, %[t1], %[temp_reg2] \n\t" 829 "lw %[temp_reg3], 23*4(%[win]) \n\t" 830 "lw %[s0], 16*4(%[tmp]) \n\t" 831 "mfhi %[temp_reg4], $ac2 \n\t" 832 "lw %[t1], 17*4(%[tmp]) \n\t" 833 "mult $ac3, %[t0], %[temp_reg3] \n\t" 834 "move %[s1], $0 \n\t" 835 "add %[temp_reg5], %[temp_reg5], %[temp_reg6] \n\t" 836 "mfhi %[temp_reg2], $ac1 \n\t" 837 "sw %[temp_reg5], 14*32*4(%[out]) \n\t" 838 "sw %[temp_reg4], 4*14*4(%[buf]) \n\t" 839 "mfhi %[temp_reg3], $ac3 \n\t" 840 "li %[temp_reg5], 0xB504F334 \n\t" 841 "add %[temp_reg1], %[temp_reg1], %[temp_reg2] \n\t" 842 "multu %[temp_reg5], %[t1] \n\t" 843 "lw %[temp_reg2], 4*13*4(%[buf]) \n\t" 844 "sw %[temp_reg1], 3*32*4(%[out]) \n\t" 845 "sra %[t1], %[t1], 31 \n\t" 846 "mfhi %[temp_reg6] \n\t" 847 "movn %[s1], %[temp_reg5], %[t1] \n\t" 848 "sw %[temp_reg3], 4*3*4(%[buf]) \n\t" 849 "lw %[temp_reg1], 13*4(%[win]) \n\t" 850 "lw %[temp_reg4], 4*4*4(%[buf]) \n\t" 851 "lw %[temp_reg3], 4*4(%[win]) \n\t" 852 "lw %[temp_reg5], 33*4(%[win]) \n\t" 853 "subu %[s1], %[temp_reg6], %[s1] \n\t" 854 "lw %[temp_reg6], 24*4(%[win]) \n\t" 855 "sub %[t1], %[s0], %[s1] \n\t" 856 "add %[t0], %[s0], %[s1] \n\t" 857 "mult $ac1, %[t1], %[temp_reg1] \n\t" 858 "mult $ac2, %[t1], %[temp_reg3] \n\t" 859 "mult $ac3, %[t0], %[temp_reg5] \n\t" 860 "mult %[t0], %[temp_reg6] \n\t" 861 "mfhi %[temp_reg1], $ac1 \n\t" 862 "mfhi %[temp_reg3], $ac2 \n\t" 863 "mfhi %[temp_reg5], $ac3 \n\t" 864 "mfhi %[temp_reg6] \n\t" 865 "add %[temp_reg2], %[temp_reg2], %[temp_reg1] \n\t" 866 "add %[temp_reg4], %[temp_reg4], %[temp_reg3] \n\t" 867 "sw %[temp_reg2], 13*32*4(%[out]) \n\t" 868 "sw %[temp_reg4], 4*32*4(%[out]) \n\t" 869 "sw %[temp_reg5], 4*13*4(%[buf]) \n\t" 870 "sw %[temp_reg6], 4*4*4(%[buf]) \n\t" 871 872 : [t0] "=&r" (t0), [t1] "=&r" (t1), [t2] "=&r" (t2), [t3] "=&r" (t3), 873 [s0] "=&r" (s0), [s2] "=&r" (s2), [temp_reg1] "=&r" (temp_reg1), 874 [temp_reg2] "=&r" (temp_reg2), [s1] "=&r" (s1), [s3] "=&r" (s3), 875 [temp_reg3] "=&r" (temp_reg3), [temp_reg4] "=&r" (temp_reg4), 876 [temp_reg5] "=&r" (temp_reg5), [temp_reg6] "=&r" (temp_reg6), 877 [out] "+r" (out) 878 : [tmp] "r" (tmp), [win] "r" (win), [buf] "r" (buf) 879 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", "$ac2hi", "$ac2lo", 880 "$ac3hi", "$ac3lo" 881 ); 882} 883 884static void ff_imdct36_blocks_mips_fixed(int *out, int *buf, int *in, 885 int count, int switch_point, int block_type) 886{ 887 int j; 888 for (j=0 ; j < count; j++) { 889 /* apply window & overlap with previous buffer */ 890 891 /* select window */ 892 int win_idx = (switch_point && j < 2) ? 0 : block_type; 893 int *win = ff_mdct_win_fixed[win_idx + (4 & -(j & 1))]; 894 895 imdct36_mips_fixed(out, buf, in, win); 896 897 in += 18; 898 buf += ((j&3) != 3 ? 1 : (72-3)); 899 out++; 900 } 901} 902 903void ff_mpadsp_init_mipsdspr1(MPADSPContext *s) 904{ 905 s->apply_window_fixed = ff_mpadsp_apply_window_mips_fixed; 906 s->imdct36_blocks_fixed = ff_imdct36_blocks_mips_fixed; 907} 908