1@ ------------------------------------------------------------------ 2@ Copyright (C) 1998-2009 PacketVideo 3@ 4@ Licensed under the Apache License, Version 2.0 (the "License"); 5@ you may not use this file except in compliance with the License. 6@ You may obtain a copy of the License at 7@ 8@ http://www.apache.org/licenses/LICENSE-2.0 9@ 10@ Unless required by applicable law or agreed to in writing, software 11@ distributed under the License is distributed on an "AS IS" BASIS, 12@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13@ express or implied. 14@ See the License for the specific language governing permissions 15@ and limitations under the License. 16@ ------------------------------------------------------------------- 17 18@ 19@ 20@ Filename: pvmp3_dct_16_gcc.s 21@ 22@ 23@------------------------------------------------------------------------------ 24@ REVISION HISTORY 25@ 26@ 27@ Who: Date: MM/DD/YYYY 28@ Description: 29@ 30@------------------------------------------------------------------------------ 31 32.arm 33 34.align 4 35 36.text 37 38.extern pvmp3_dct_16 39.extern pvmp3_merge_in_place_N32 40.extern pvmp3_split 41 42 43 44@------------------------------------------------------------------------------ 45 46.global pvmp3_dct_16 47 48pvmp3_dct_16: 49 stmfd sp!,{r0,r1,r4-r11,lr} 50 ldr r1,[r0] 51 ldr r3,[r0,#0x3c] 52 ldr r12,constant1 53 sub r2,r1,r3 54 smull lr,r2,r12,r2 55 sub sp,sp,#0x1c 56 str r2,[sp,#0x14] 57 ldr r2,[r0,#0x1c] 58 ldr r12,[r0,#0x20] 59 add r1,r1,r3 60 sub r3,r2,r12 61 ldr lr,constant2 62 mov r3,r3,lsl #3 63 smull r4,r3,lr,r3 64 ldr r6,constant5 65 str r3,[sp] 66 add r3,r2,r12 67 sub r2,r1,r3 68 ldr r12,constant3 69 add r3,r1,r3 70 smull lr,r2,r12,r2 71 ldr r12,[r0,#0x38] 72 ldr r1,[r0,#4] 73 ldr lr,constant4 74 sub r4,r1,r12 75 add r1,r1,r12 76 ldr r12,[r0,#0x18] 77 smull r4,r5,lr,r4 78 ldr lr,[r0,#0x24] 79 ldr r10,constant10 80 sub r4,r12,lr 81 mov r4,r4,lsl #1 82 smull r7,r4,r6,r4 83 add r12,r12,lr 84 add r7,r1,r12 85 sub r12,r1,r12 86 ldr r1,constant6 87 str r4,[sp,#4] 88 smull r12,r4,r1,r12 89 ldr r1,[r0,#8] 90 ldr r12,[r0,#0x34] 91 ldr r6,constant7 92 sub lr,r1,r12 93 smull r8,lr,r6,lr 94 add r1,r1,r12 95 str lr,[sp,#0x10] 96 ldr r12,[r0,#0x14] 97 ldr lr,[r0,#0x28] 98 ldr r8,constant8 99 sub r6,r12,lr 100 mov r6,r6,lsl #1 101 smull r9,r6,r8,r6 102 add r12,r12,lr 103 ldr r9,constant9 104 add r8,r1,r12 105 sub r12,r1,r12 106 smull r12,lr,r9,r12 107 ldr r12,[r0,#0x30] 108 ldr r1,[r0,#0xc] 109 sub r9,r1,r12 110 smull r11,r9,r10,r9 111 add r12,r1,r12 112 str r9,[sp,#0xc] 113 ldr r9,[r0,#0x10] 114 ldr r10,constant11 115 str r9,[sp,#0x18] 116 ldr r1,[r0,#0x2c] 117 sub r9,r9,r1 118 smull r11,r9,r10,r9 119 ldr r10,constant12 120 str r9,[sp,#8] 121 ldr r9,[sp,#0x18] 122 ldr r11,constant14 123 add r9,r9,r1 124 add r1,r12,r9 125 sub r12,r12,r9 126 mov r12,r12,lsl #2 127 smull r9,r12,r10,r12 128 ldr r10,constant13 129 add r9,r3,r1 130 sub r1,r3,r1 131 smull r1,r3,r10,r1 132 sub r1,r7,r8 133 mov r1,r1,lsl #1 134 smull r1,r10,r11,r1 135 add r1,r7,r8 136 add r8,r9,r1 137 sub r7,r9,r1 138 mov r8,r8,asr #1 139 ldr r1,constant15 140 str r8,[r0] 141 smull r7,r8,r1,r7 142 sub r7,r3,r10 143 str r8,[r0,#0x20] 144 mov r7,r7,lsl #1 145 smull r8,r7,r1,r7 146 add r3,r3,r10 147 add r3,r3,r7 148 str r3,[r0,#0x10] 149 sub r3,r2,r12 150 str r7,[r0,#0x30] 151 add r2,r2,r12 152 ldr r7,constant13 153 sub r12,r4,lr 154 mov r3,r3,lsl #1 155 smull r8,r3,r7,r3 156 add lr,r4,lr 157 sub r4,r2,lr 158 mov r12,r12,lsl #2 159 smull r7,r12,r11,r12 160 add lr,lr,r2 161 sub r2,r3,r12 162 mov r2,r2,lsl #1 163 smull r7,r2,r1,r2 164 mov r4,r4,lsl #1 165 add r12,r12,r2 166 add r3,r12,r3 167 smull r7,r4,r1,r4 168 add r12,r3,lr 169 add r3,r3,r4 170 str r3,[r0,#0x18] 171 add r3,r2,r4 172 str r2,[r0,#0x38] 173 str r3,[r0,#0x28] 174 str r12,[r0,#8] 175 ldr r2,[sp,#0x14] 176 ldr r3,[sp,#0] 177 ldr lr,[sp,#4] 178 sub r2,r2,r3 179 ldr r3,constant3 180 mov r2,r2,lsl #1 181 smull r12,r2,r3,r2 182 ldr r3,[sp,#0x14] 183 ldr r12,[sp,#0] 184 ldr r4,constant6 185 add r12,r3,r12 186 ldr r3,[sp,#4] 187 sub lr,r5,lr 188 mov lr,lr,lsl #1 189 add r3,r5,r3 190 smull r5,lr,r4,lr 191 ldr r4,[sp,#0x10] 192 ldr r5,[sp,#0x10] 193 add r4,r4,r6 194 sub r5,r5,r6 195 ldr r6,constant9 196 mov r5,r5,lsl #1 197 smull r7,r5,r6,r5 198 ldr r6,[sp,#8] 199 ldr r9,[sp,#0xc] 200 ldr r10,constant12 201 sub r6,r9,r6 202 mov r6,r6,lsl #3 203 smull r7,r6,r10,r6 204 ldr r8,[sp,#0x20] 205 ldr r7,[sp,#8] 206 cmp r8,#0 207 add r7,r9,r7 208 209 bne no_flag_proc 210 rsb r12,r12,#0 211 rsb r2,r2,#0 212 rsb r3,r3,#0 213 rsb lr,lr,#0 214 rsb r4,r4,#0 215 rsb r5,r5,#0 216 rsb r7,r7,#0 217 rsb r6,r6,#0 218no_flag_proc: 219 220 sub r8,r2,r6 221 add r2,r6,r2 222 sub r6,r12,r7 223 ldr r9,constant13 224 add r12,r12,r7 225 sub r7,r3,r4 226 mov r6,r6,lsl #1 227 mov r8,r8,lsl #1 228 smull r10,r8,r9,r8 229 add r3,r3,r4 230 smull r10,r6,r9,r6 231 sub r4,lr,r5 232 mov r7,r7,lsl #2 233 smull r9,r7,r11,r7 234 add lr,lr,r5 235 sub r5,r6,r7 236 add r6,r6,r7 237 sub r7,r12,r3 238 add r3,r12,r3 239 sub r12,r2,lr 240 mov r4,r4,lsl #2 241 smull r9,r4,r11,r4 242 add lr,r2,lr 243 sub r2,r8,r4 244 mov r2,r2,lsl #1 245 mov r5,r5,lsl #1 246 mov r12,r12,lsl #1 247 mov r7,r7,lsl #1 248 smull r9,r5,r1,r5 249 smull r9,r2,r1,r2 250 add r6,r6,r5 251 smull r9,r7,r1,r7 252 smull r9,r12,r1,r12 253 add r1,r4,r2 254 add r1,r1,r8 255 add lr,lr,r1 256 add r3,r3,lr 257 str r3,[r0,#4] 258 add r3,r6,lr 259 str r3,[r0,#0xc] 260 add r1,r1,r12 261 add r3,r6,r1 262 add r1,r7,r1 263 str r1,[r0,#0x1c] 264 str r3,[r0,#0x14] 265 add r1,r12,r2 266 add r3,r7,r1 267 add r1,r5,r1 268 str r1,[r0,#0x2c] 269 str r3,[r0,#0x24]! 270 add r1,r5,r2 271 str r1,[r0,#0x10] 272 str r2,[r0,#0x18] 273 add sp,sp,#0x24 274 ldmfd sp!,{r4-r11,pc} 275 276 277 278@------------------------------------------------------------------------------ 279 280.global pvmp3_merge_in_place_N32 281 282 283 284pvmp3_merge_in_place_N32: 285 stmfd sp!,{r4,lr} 286 ldr r1,[r0,#0x1c] 287 ldr r2,[r0,#0x38] 288 str r1,[r0,#0x38] 289 ldr r1,[r0,#0x18] 290 ldr r3,[r0,#0x30] 291 str r1,[r0,#0x30] 292 ldr r12,[r0,#0x14] 293 ldr r1,[r0,#0x28] 294 str r12,[r0,#0x28] 295 ldr r12,[r0,#0x10] 296 ldr lr,[r0,#0x20] 297 str r12,[r0,#0x20] 298 ldr r12,[r0,#0xc] 299 str r12,[r0,#0x18] 300 ldr r12,[r0,#8] 301 str r12,[r0,#0x10] 302 ldr r12,[r0,#4] 303 str r12,[r0,#8] 304 ldr r4,[r0,#0x40] 305 ldr r12,[r0,#0x44] 306 add r4,r4,r12 307 str r4,[r0,#4] 308 str lr,[r0,#0x40] 309 ldr lr,[r0,#0x48] 310 add r12,lr,r12 311 str r12,[r0,#0xc] 312 ldr r12,[r0,#0x4c] 313 add lr,r12,lr 314 str lr,[r0,#0x14] 315 ldr lr,[r0,#0x24] 316 str lr,[r0,#0x48] 317 ldr lr,[r0,#0x50] 318 add r12,lr,r12 319 str r12,[r0,#0x1c] 320 ldr r12,[r0,#0x54] 321 str r1,[r0,#0x50] 322 add lr,r12,lr 323 str lr,[r0,#0x24] 324 ldr r1,[r0,#0x58] 325 ldr r4,[r0,#0x2c] 326 ldr lr,[r0,#0x34] 327 add r12,r1,r12 328 str r12,[r0,#0x2c] 329 ldr r12,[r0,#0x5c] 330 add r1,r12,r1 331 str r1,[r0,#0x34] 332 str r4,[r0,#0x58] 333 ldr r1,[r0,#0x60] 334 ldr r4,[r0,#0x3c] 335 add r12,r1,r12 336 str r12,[r0,#0x3c] 337 ldr r12,[r0,#0x64] 338 add r1,r12,r1 339 str r1,[r0,#0x44] 340 ldr r1,[r0,#0x68] 341 add r12,r1,r12 342 str r12,[r0,#0x4c] 343 ldr r12,[r0,#0x6c] 344 add r1,r12,r1 345 str r1,[r0,#0x54] 346 ldr r1,[r0,#0x70] 347 str r3,[r0,#0x60] 348 add r12,r1,r12 349 str r12,[r0,#0x5c] 350 ldr r3,[r0,#0x74] 351 add r1,r3,r1 352 str r1,[r0,#0x64] 353 str lr,[r0,#0x68] 354 ldr r1,[r0,#0x78] 355 str r2,[r0,#0x70] 356 add r3,r1,r3 357 str r3,[r0,#0x6c] 358 ldr r2,[r0,#0x7c] 359 add r1,r1,r2 360 str r1,[r0,#0x74] 361 str r4,[r0,#0x78] 362 ldmfd sp!,{r4,pc} 363 364 365@------------------------------------------------------------------------------ 366 367.global pvmp3_split 368 369 370pvmp3_split: 371 stmfd sp!,{r4,r5,lr} 372 adr r1,constant16 373 ldr r2,[r1] 374 add r2,r1 375 sub r1,r0,#4 376 mov r3,#3 377loop1: 378 ldr r12,[r0] 379 ldr lr,[r1] 380 ldr r4,[r2],#-4 381 add r5,lr,r12 382 sub r12,lr,r12 383 smull r12,lr,r4,r12 384 str r5,[r1],#-4 385 mov r12,r12,lsr #27 386 add r12,r12,lr,lsl #5 387 str r12,[r0],#4 388 ldr r12,[r0] 389 ldr lr,[r1] 390 ldr r4,[r2],#-4 391 add r5,lr,r12 392 sub r12,lr,r12 393 smull r12,lr,r4,r12 394 str r5,[r1],#-4 395 mov r12,r12,lsr #27 396 add r12,r12,lr,lsl #5 397 str r12,[r0],#4 398 subs r3,r3,#1 399 bne loop1 400 mov r3,#5 401loop2: 402 ldr r12,[r0] 403 ldr lr,[r1] 404 ldr r4,[r2],#-4 405 add r5,lr,r12 406 sub r12,lr,r12 407 mov r12,r12,lsl #1 408 smull lr,r12,r4,r12 409 str r5,[r1],#-4 410 str r12,[r0],#4 411 ldr r12,[r0] 412 ldr lr,[r1] 413 ldr r4,[r2],#-4 414 add r5,lr,r12 415 sub r12,lr,r12 416 mov r12,r12,lsl #1 417 smull lr,r12,r4,r12 418 str r5,[r1],#-4 419 str r12,[r0],#4 420 subs r3,r3,#1 421 bne loop2 422 ldmfd sp!,{r4,r5,pc} 423constant1: 424 .word 0x404f4680 425constant2: 426 .word 0x519e4e00 427constant3: 428 .word 0x4140fb80 429constant4: 430 .word 0x42e13c00 431constant5: 432 .word 0x6e3c9300 433constant6: 434 .word 0x4cf8de80 435constant7: 436 .word 0x48919f80 437constant8: 438 .word 0x43e22480 439constant9: 440 .word 0x73326b80 441constant10: 442 .word 0x52cb0e80 443constant11: 444 .word 0x64e24000 445constant12: 446 .word 0x52036780 447constant13: 448 .word 0x4545ea00 449constant14: 450 .word 0x539eba80 451constant15: 452 .word 0x5a827980 453constant16: 454 .word (CosTable_dct32 + 60)-constant16 455 456 457 458CosTable_dct32: 459 .word 0x4013c280 460 .word 0x40b34580 461 .word 0x41fa2d80 462 .word 0x43f93400 463 .word 0x46cc1c00 464 .word 0x4a9d9d00 465 .word 0x4fae3700 466 .word 0x56601e80 467 .word 0x5f4cf700 468 .word 0x6b6fcf00 469 .word 0x07c7d1d8 470 .word 0x095b0350 471 .word 0x0bdf91b0 472 .word 0x107655e0 473 .word 0x1b42c840 474 .word 0x51852300 475 476 477