Mercurial > sdl-ios-xcode
annotate src/hermes/x86p_32.asm @ 1262:09164d2b8373
Hopefully the X servers have been fixed (in 5 years) :)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 25 Jan 2006 06:12:57 +0000 |
| parents | 2d6dc7de1145 |
| children | 393092a3ebf6 |
| rev | line source |
|---|---|
| 0 | 1 ; |
| 2 ; x86 format converters for HERMES | |
| 3 ; Some routines Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at) | |
| 4 ; This source code is licensed under the GNU LGPL | |
| 5 ; | |
| 6 ; Please refer to the file COPYING.LIB contained in the distribution for | |
| 7 ; licensing conditions | |
| 8 ; | |
| 9 ; Most routines are (c) Glenn Fiedler (ptc@gaffer.org), used with permission | |
| 10 ; | |
| 11 | |
| 12 | |
| 13 BITS 32 | |
| 14 | |
| 15 GLOBAL _ConvertX86p32_32BGR888 | |
| 16 GLOBAL _ConvertX86p32_32RGBA888 | |
| 17 GLOBAL _ConvertX86p32_32BGRA888 | |
| 18 GLOBAL _ConvertX86p32_24RGB888 | |
| 19 GLOBAL _ConvertX86p32_24BGR888 | |
| 20 GLOBAL _ConvertX86p32_16RGB565 | |
| 21 GLOBAL _ConvertX86p32_16BGR565 | |
| 22 GLOBAL _ConvertX86p32_16RGB555 | |
| 23 GLOBAL _ConvertX86p32_16BGR555 | |
| 24 GLOBAL _ConvertX86p32_8RGB332 | |
| 25 | |
| 26 EXTERN _x86return | |
|
1166
da33b7e6d181
Date: Tue, 1 Nov 2005 20:25:10 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
27 |
| 0 | 28 SECTION .text |
| 29 | |
| 30 ;; _Convert_* | |
| 31 ;; Paramters: | |
| 32 ;; ESI = source | |
| 33 ;; EDI = dest | |
| 34 ;; ECX = amount (NOT 0!!! (the _ConvertX86 routine checks for that though)) | |
| 35 ;; Destroys: | |
| 36 ;; EAX, EBX, EDX | |
| 37 | |
| 38 | |
| 39 _ConvertX86p32_32BGR888: | |
| 40 | |
| 41 ; check short | |
| 42 cmp ecx,BYTE 32 | |
| 43 ja .L3 | |
| 44 | |
| 45 .L1 ; short loop | |
| 46 mov edx,[esi] | |
| 47 bswap edx | |
| 48 ror edx,8 | |
| 49 mov [edi],edx | |
| 50 add esi,BYTE 4 | |
| 51 add edi,BYTE 4 | |
| 52 dec ecx | |
| 53 jnz .L1 | |
| 54 .L2 | |
| 55 jmp _x86return | |
| 56 | |
| 57 .L3 ; save ebp | |
| 58 push ebp | |
| 59 | |
| 60 ; unroll four times | |
| 61 mov ebp,ecx | |
| 62 shr ebp,2 | |
| 63 | |
| 64 ; save count | |
| 65 push ecx | |
| 66 | |
| 67 .L4 mov eax,[esi] | |
| 68 mov ebx,[esi+4] | |
| 69 | |
| 70 bswap eax | |
| 71 | |
| 72 bswap ebx | |
| 73 | |
| 74 ror eax,8 | |
| 75 mov ecx,[esi+8] | |
| 76 | |
| 77 ror ebx,8 | |
| 78 mov edx,[esi+12] | |
| 79 | |
| 80 bswap ecx | |
| 81 | |
| 82 bswap edx | |
| 83 | |
| 84 ror ecx,8 | |
| 85 mov [edi+0],eax | |
| 86 | |
| 87 ror edx,8 | |
| 88 mov [edi+4],ebx | |
| 89 | |
| 90 mov [edi+8],ecx | |
| 91 mov [edi+12],edx | |
| 92 | |
| 93 add esi,BYTE 16 | |
| 94 add edi,BYTE 16 | |
| 95 | |
| 96 dec ebp | |
| 97 jnz .L4 | |
| 98 | |
| 99 ; check tail | |
| 100 pop ecx | |
| 101 and ecx,BYTE 11b | |
| 102 jz .L6 | |
| 103 | |
| 104 .L5 ; tail loop | |
| 105 mov edx,[esi] | |
| 106 bswap edx | |
| 107 ror edx,8 | |
| 108 mov [edi],edx | |
| 109 add esi,BYTE 4 | |
| 110 add edi,BYTE 4 | |
| 111 dec ecx | |
| 112 jnz .L5 | |
| 113 | |
| 114 .L6 pop ebp | |
| 115 jmp _x86return | |
| 116 | |
| 117 | |
| 118 | |
| 119 | |
| 120 _ConvertX86p32_32RGBA888: | |
| 121 | |
| 122 ; check short | |
| 123 cmp ecx,BYTE 32 | |
| 124 ja .L3 | |
| 125 | |
| 126 .L1 ; short loop | |
| 127 mov edx,[esi] | |
| 128 rol edx,8 | |
| 129 mov [edi],edx | |
| 130 add esi,BYTE 4 | |
| 131 add edi,BYTE 4 | |
| 132 dec ecx | |
| 133 jnz .L1 | |
| 134 .L2 | |
| 135 jmp _x86return | |
| 136 | |
| 137 .L3 ; save ebp | |
| 138 push ebp | |
| 139 | |
| 140 ; unroll four times | |
| 141 mov ebp,ecx | |
| 142 shr ebp,2 | |
| 143 | |
| 144 ; save count | |
| 145 push ecx | |
| 146 | |
| 147 .L4 mov eax,[esi] | |
| 148 mov ebx,[esi+4] | |
| 149 | |
| 150 rol eax,8 | |
| 151 mov ecx,[esi+8] | |
| 152 | |
| 153 rol ebx,8 | |
| 154 mov edx,[esi+12] | |
| 155 | |
| 156 rol ecx,8 | |
| 157 mov [edi+0],eax | |
| 158 | |
| 159 rol edx,8 | |
| 160 mov [edi+4],ebx | |
| 161 | |
| 162 mov [edi+8],ecx | |
| 163 mov [edi+12],edx | |
| 164 | |
| 165 add esi,BYTE 16 | |
| 166 add edi,BYTE 16 | |
| 167 | |
| 168 dec ebp | |
| 169 jnz .L4 | |
| 170 | |
| 171 ; check tail | |
| 172 pop ecx | |
| 173 and ecx,BYTE 11b | |
| 174 jz .L6 | |
| 175 | |
| 176 .L5 ; tail loop | |
| 177 mov edx,[esi] | |
| 178 rol edx,8 | |
| 179 mov [edi],edx | |
| 180 add esi,BYTE 4 | |
| 181 add edi,BYTE 4 | |
| 182 dec ecx | |
| 183 jnz .L5 | |
| 184 | |
| 185 .L6 pop ebp | |
| 186 jmp _x86return | |
| 187 | |
| 188 | |
| 189 | |
| 190 | |
| 191 _ConvertX86p32_32BGRA888: | |
| 192 | |
| 193 ; check short | |
| 194 cmp ecx,BYTE 32 | |
| 195 ja .L3 | |
| 196 | |
| 197 .L1 ; short loop | |
| 198 mov edx,[esi] | |
| 199 bswap edx | |
| 200 mov [edi],edx | |
| 201 add esi,BYTE 4 | |
| 202 add edi,BYTE 4 | |
| 203 dec ecx | |
| 204 jnz .L1 | |
| 205 .L2 | |
| 206 jmp _x86return | |
| 207 | |
| 208 .L3 ; save ebp | |
| 209 push ebp | |
| 210 | |
| 211 ; unroll four times | |
| 212 mov ebp,ecx | |
| 213 shr ebp,2 | |
| 214 | |
| 215 ; save count | |
| 216 push ecx | |
| 217 | |
| 218 .L4 mov eax,[esi] | |
| 219 mov ebx,[esi+4] | |
| 220 | |
| 221 mov ecx,[esi+8] | |
| 222 mov edx,[esi+12] | |
| 223 | |
| 224 bswap eax | |
| 225 | |
| 226 bswap ebx | |
| 227 | |
| 228 bswap ecx | |
| 229 | |
| 230 bswap edx | |
| 231 | |
| 232 mov [edi+0],eax | |
| 233 mov [edi+4],ebx | |
| 234 | |
| 235 mov [edi+8],ecx | |
| 236 mov [edi+12],edx | |
| 237 | |
| 238 add esi,BYTE 16 | |
| 239 add edi,BYTE 16 | |
| 240 | |
| 241 dec ebp | |
| 242 jnz .L4 | |
| 243 | |
| 244 ; check tail | |
| 245 pop ecx | |
| 246 and ecx,BYTE 11b | |
| 247 jz .L6 | |
| 248 | |
| 249 .L5 ; tail loop | |
| 250 mov edx,[esi] | |
| 251 bswap edx | |
| 252 mov [edi],edx | |
| 253 add esi,BYTE 4 | |
| 254 add edi,BYTE 4 | |
| 255 dec ecx | |
| 256 jnz .L5 | |
| 257 | |
| 258 .L6 pop ebp | |
| 259 jmp _x86return | |
| 260 | |
| 261 | |
| 262 | |
| 263 | |
| 264 ;; 32 bit RGB 888 to 24 BIT RGB 888 | |
| 265 | |
| 266 _ConvertX86p32_24RGB888: | |
| 267 | |
| 268 ; check short | |
| 269 cmp ecx,BYTE 32 | |
| 270 ja .L3 | |
| 271 | |
| 272 .L1 ; short loop | |
| 273 mov al,[esi] | |
| 274 mov bl,[esi+1] | |
| 275 mov dl,[esi+2] | |
| 276 mov [edi],al | |
| 277 mov [edi+1],bl | |
| 278 mov [edi+2],dl | |
| 279 add esi,BYTE 4 | |
| 280 add edi,BYTE 3 | |
| 281 dec ecx | |
| 282 jnz .L1 | |
| 283 .L2 | |
| 284 jmp _x86return | |
| 285 | |
| 286 .L3 ; head | |
| 287 mov edx,edi | |
| 288 and edx,BYTE 11b | |
| 289 jz .L4 | |
| 290 mov al,[esi] | |
| 291 mov bl,[esi+1] | |
| 292 mov dl,[esi+2] | |
| 293 mov [edi],al | |
| 294 mov [edi+1],bl | |
| 295 mov [edi+2],dl | |
| 296 add esi,BYTE 4 | |
| 297 add edi,BYTE 3 | |
| 298 dec ecx | |
| 299 jmp SHORT .L3 | |
| 300 | |
| 301 .L4 ; unroll 4 times | |
| 302 push ebp | |
| 303 mov ebp,ecx | |
| 304 shr ebp,2 | |
| 305 | |
| 306 ; save count | |
| 307 push ecx | |
| 308 | |
| 309 .L5 mov eax,[esi] ; first dword eax = [A][R][G][B] | |
| 310 mov ebx,[esi+4] ; second dword ebx = [a][r][g][b] | |
| 311 | |
| 312 shl eax,8 ; eax = [R][G][B][.] | |
| 313 mov ecx,[esi+12] ; third dword ecx = [a][r][g][b] | |
| 314 | |
| 315 shl ebx,8 ; ebx = [r][g][b][.] | |
| 316 mov al,[esi+4] ; eax = [R][G][B][b] | |
| 317 | |
| 318 ror eax,8 ; eax = [b][R][G][B] (done) | |
| 319 mov bh,[esi+8+1] ; ebx = [r][g][G][.] | |
| 320 | |
| 321 mov [edi],eax | |
| 322 add edi,BYTE 3*4 | |
| 323 | |
| 324 shl ecx,8 ; ecx = [r][g][b][.] | |
| 325 mov bl,[esi+8+0] ; ebx = [r][g][G][B] | |
| 326 | |
| 327 rol ebx,16 ; ebx = [G][B][r][g] (done) | |
| 328 mov cl,[esi+8+2] ; ecx = [r][g][b][R] (done) | |
| 329 | |
| 330 mov [edi+4-3*4],ebx | |
| 331 add esi,BYTE 4*4 | |
| 332 | |
| 333 mov [edi+8-3*4],ecx | |
| 334 dec ebp | |
| 335 | |
| 336 jnz .L5 | |
| 337 | |
| 338 ; check tail | |
| 339 pop ecx | |
| 340 and ecx,BYTE 11b | |
| 341 jz .L7 | |
| 342 | |
| 343 .L6 ; tail loop | |
| 344 mov al,[esi] | |
| 345 mov bl,[esi+1] | |
| 346 mov dl,[esi+2] | |
| 347 mov [edi],al | |
| 348 mov [edi+1],bl | |
| 349 mov [edi+2],dl | |
| 350 add esi,BYTE 4 | |
| 351 add edi,BYTE 3 | |
| 352 dec ecx | |
| 353 jnz .L6 | |
| 354 | |
| 355 .L7 pop ebp | |
| 356 jmp _x86return | |
| 357 | |
| 358 | |
| 359 | |
| 360 | |
| 361 ;; 32 bit RGB 888 to 24 bit BGR 888 | |
| 362 | |
| 363 _ConvertX86p32_24BGR888: | |
| 364 | |
| 365 ; check short | |
| 366 cmp ecx,BYTE 32 | |
| 367 ja .L3 | |
| 368 | |
| 369 | |
| 370 .L1 ; short loop | |
| 371 mov dl,[esi] | |
| 372 mov bl,[esi+1] | |
| 373 mov al,[esi+2] | |
| 374 mov [edi],al | |
| 375 mov [edi+1],bl | |
| 376 mov [edi+2],dl | |
| 377 add esi,BYTE 4 | |
| 378 add edi,BYTE 3 | |
| 379 dec ecx | |
| 380 jnz .L1 | |
| 381 .L2 | |
| 382 jmp _x86return | |
| 383 | |
| 384 .L3 ; head | |
| 385 mov edx,edi | |
| 386 and edx,BYTE 11b | |
| 387 jz .L4 | |
| 388 mov dl,[esi] | |
| 389 mov bl,[esi+1] | |
| 390 mov al,[esi+2] | |
| 391 mov [edi],al | |
| 392 mov [edi+1],bl | |
| 393 mov [edi+2],dl | |
| 394 add esi,BYTE 4 | |
| 395 add edi,BYTE 3 | |
| 396 dec ecx | |
| 397 jmp SHORT .L3 | |
| 398 | |
| 399 .L4 ; unroll 4 times | |
| 400 push ebp | |
| 401 mov ebp,ecx | |
| 402 shr ebp,2 | |
| 403 | |
| 404 ; save count | |
| 405 push ecx | |
| 406 | |
| 407 .L5 | |
| 408 mov eax,[esi] ; first dword eax = [A][R][G][B] | |
| 409 mov ebx,[esi+4] ; second dword ebx = [a][r][g][b] | |
| 410 | |
| 411 bswap eax ; eax = [B][G][R][A] | |
| 412 | |
| 413 bswap ebx ; ebx = [b][g][r][a] | |
| 414 | |
| 415 mov al,[esi+4+2] ; eax = [B][G][R][r] | |
| 416 mov bh,[esi+4+4+1] ; ebx = [b][g][G][a] | |
| 417 | |
| 418 ror eax,8 ; eax = [r][B][G][R] (done) | |
| 419 mov bl,[esi+4+4+2] ; ebx = [b][g][G][R] | |
| 420 | |
| 421 ror ebx,16 ; ebx = [G][R][b][g] (done) | |
| 422 mov [edi],eax | |
| 423 | |
| 424 mov [edi+4],ebx | |
| 425 mov ecx,[esi+12] ; third dword ecx = [a][r][g][b] | |
| 426 | |
| 427 bswap ecx ; ecx = [b][g][r][a] | |
| 428 | |
| 429 mov cl,[esi+8] ; ecx = [b][g][r][B] (done) | |
| 430 add esi,BYTE 4*4 | |
| 431 | |
| 432 mov [edi+8],ecx | |
| 433 add edi,BYTE 3*4 | |
| 434 | |
| 435 dec ebp | |
| 436 jnz .L5 | |
| 437 | |
| 438 ; check tail | |
| 439 pop ecx | |
| 440 and ecx,BYTE 11b | |
| 441 jz .L7 | |
| 442 | |
| 443 .L6 ; tail loop | |
| 444 mov dl,[esi] | |
| 445 mov bl,[esi+1] | |
| 446 mov al,[esi+2] | |
| 447 mov [edi],al | |
| 448 mov [edi+1],bl | |
| 449 mov [edi+2],dl | |
| 450 add esi,BYTE 4 | |
| 451 add edi,BYTE 3 | |
| 452 dec ecx | |
| 453 jnz .L6 | |
| 454 | |
| 455 .L7 | |
| 456 pop ebp | |
| 457 jmp _x86return | |
| 458 | |
| 459 | |
| 460 | |
| 461 | |
| 462 ;; 32 bit RGB 888 to 16 BIT RGB 565 | |
| 463 | |
| 464 _ConvertX86p32_16RGB565: | |
| 465 ; check short | |
| 466 cmp ecx,BYTE 16 | |
| 467 ja .L3 | |
| 468 | |
| 469 .L1 ; short loop | |
| 470 mov bl,[esi+0] ; blue | |
| 471 mov al,[esi+1] ; green | |
| 472 mov ah,[esi+2] ; red | |
| 473 shr ah,3 | |
| 474 and al,11111100b | |
| 475 shl eax,3 | |
| 476 shr bl,3 | |
| 477 add al,bl | |
| 478 mov [edi+0],al | |
| 479 mov [edi+1],ah | |
| 480 add esi,BYTE 4 | |
| 481 add edi,BYTE 2 | |
| 482 dec ecx | |
| 483 jnz .L1 | |
| 484 | |
| 485 .L2: ; End of short loop | |
| 486 jmp _x86return | |
| 487 | |
| 488 | |
| 489 .L3 ; head | |
| 490 mov ebx,edi | |
| 491 and ebx,BYTE 11b | |
| 492 jz .L4 | |
| 493 | |
| 494 mov bl,[esi+0] ; blue | |
| 495 mov al,[esi+1] ; green | |
| 496 mov ah,[esi+2] ; red | |
| 497 shr ah,3 | |
| 498 and al,11111100b | |
| 499 shl eax,3 | |
| 500 shr bl,3 | |
| 501 add al,bl | |
| 502 mov [edi+0],al | |
| 503 mov [edi+1],ah | |
| 504 add esi,BYTE 4 | |
| 505 add edi,BYTE 2 | |
| 506 dec ecx | |
| 507 | |
| 508 .L4: | |
| 509 ; save count | |
| 510 push ecx | |
| 511 | |
| 512 ; unroll twice | |
| 513 shr ecx,1 | |
| 514 | |
| 515 ; point arrays to end | |
| 516 lea esi,[esi+ecx*8] | |
| 517 lea edi,[edi+ecx*4] | |
| 518 | |
| 519 ; negative counter | |
| 520 neg ecx | |
| 521 jmp SHORT .L6 | |
| 522 | |
| 523 .L5: | |
| 524 mov [edi+ecx*4-4],eax | |
| 525 .L6: | |
| 526 mov eax,[esi+ecx*8] | |
| 527 | |
| 528 shr ah,2 | |
| 529 mov ebx,[esi+ecx*8+4] | |
| 530 | |
| 531 shr eax,3 | |
| 532 mov edx,[esi+ecx*8+4] | |
| 533 | |
| 534 shr bh,2 | |
| 535 mov dl,[esi+ecx*8+2] | |
| 536 | |
| 537 shl ebx,13 | |
| 538 and eax,000007FFh | |
| 539 | |
| 540 shl edx,8 | |
| 541 and ebx,07FF0000h | |
| 542 | |
| 543 and edx,0F800F800h | |
| 544 add eax,ebx | |
| 545 | |
| 546 add eax,edx | |
| 547 inc ecx | |
| 548 | |
| 549 jnz .L5 | |
| 550 | |
| 551 mov [edi+ecx*4-4],eax | |
| 552 | |
| 553 ; tail | |
| 554 pop ecx | |
| 555 test cl,1 | |
| 556 jz .L7 | |
| 557 | |
| 558 mov bl,[esi+0] ; blue | |
| 559 mov al,[esi+1] ; green | |
| 560 mov ah,[esi+2] ; red | |
| 561 shr ah,3 | |
| 562 and al,11111100b | |
| 563 shl eax,3 | |
| 564 shr bl,3 | |
| 565 add al,bl | |
| 566 mov [edi+0],al | |
| 567 mov [edi+1],ah | |
| 568 add esi,BYTE 4 | |
| 569 add edi,BYTE 2 | |
| 570 | |
| 571 .L7: | |
| 572 jmp _x86return | |
| 573 | |
| 574 | |
| 575 | |
| 576 | |
| 577 ;; 32 bit RGB 888 to 16 BIT BGR 565 | |
| 578 | |
| 579 _ConvertX86p32_16BGR565: | |
| 580 | |
| 581 ; check short | |
| 582 cmp ecx,BYTE 16 | |
| 583 ja .L3 | |
| 584 | |
| 585 .L1 ; short loop | |
| 586 mov ah,[esi+0] ; blue | |
| 587 mov al,[esi+1] ; green | |
| 588 mov bl,[esi+2] ; red | |
| 589 shr ah,3 | |
| 590 and al,11111100b | |
| 591 shl eax,3 | |
| 592 shr bl,3 | |
| 593 add al,bl | |
| 594 mov [edi+0],al | |
| 595 mov [edi+1],ah | |
| 596 add esi,BYTE 4 | |
| 597 add edi,BYTE 2 | |
| 598 dec ecx | |
| 599 jnz .L1 | |
| 600 .L2 | |
| 601 jmp _x86return | |
| 602 | |
| 603 .L3 ; head | |
| 604 mov ebx,edi | |
| 605 and ebx,BYTE 11b | |
| 606 jz .L4 | |
| 607 mov ah,[esi+0] ; blue | |
| 608 mov al,[esi+1] ; green | |
| 609 mov bl,[esi+2] ; red | |
| 610 shr ah,3 | |
| 611 and al,11111100b | |
| 612 shl eax,3 | |
| 613 shr bl,3 | |
| 614 add al,bl | |
| 615 mov [edi+0],al | |
| 616 mov [edi+1],ah | |
| 617 add esi,BYTE 4 | |
| 618 add edi,BYTE 2 | |
| 619 dec ecx | |
| 620 | |
| 621 .L4 ; save count | |
| 622 push ecx | |
| 623 | |
| 624 ; unroll twice | |
| 625 shr ecx,1 | |
| 626 | |
| 627 ; point arrays to end | |
| 628 lea esi,[esi+ecx*8] | |
| 629 lea edi,[edi+ecx*4] | |
| 630 | |
| 631 ; negative count | |
| 632 neg ecx | |
| 633 jmp SHORT .L6 | |
| 634 | |
| 635 .L5 | |
| 636 mov [edi+ecx*4-4],eax | |
| 637 .L6 | |
| 638 mov edx,[esi+ecx*8+4] | |
| 639 | |
| 640 mov bh,[esi+ecx*8+4] | |
| 641 mov ah,[esi+ecx*8] | |
| 642 | |
| 643 shr bh,3 | |
| 644 mov al,[esi+ecx*8+1] | |
| 645 | |
| 646 shr ah,3 | |
| 647 mov bl,[esi+ecx*8+5] | |
| 648 | |
| 649 shl eax,3 | |
| 650 mov dl,[esi+ecx*8+2] | |
| 651 | |
| 652 shl ebx,19 | |
| 653 and eax,0000FFE0h | |
| 654 | |
| 655 shr edx,3 | |
| 656 and ebx,0FFE00000h | |
| 657 | |
| 658 and edx,001F001Fh | |
| 659 add eax,ebx | |
| 660 | |
| 661 add eax,edx | |
| 662 inc ecx | |
| 663 | |
| 664 jnz .L5 | |
| 665 | |
| 666 mov [edi+ecx*4-4],eax | |
| 667 | |
| 668 ; tail | |
| 669 pop ecx | |
| 670 and ecx,BYTE 1 | |
| 671 jz .L7 | |
| 672 mov ah,[esi+0] ; blue | |
| 673 mov al,[esi+1] ; green | |
| 674 mov bl,[esi+2] ; red | |
| 675 shr ah,3 | |
| 676 and al,11111100b | |
| 677 shl eax,3 | |
| 678 shr bl,3 | |
| 679 add al,bl | |
| 680 mov [edi+0],al | |
| 681 mov [edi+1],ah | |
| 682 add esi,BYTE 4 | |
| 683 add edi,BYTE 2 | |
| 684 | |
| 685 .L7 | |
| 686 jmp _x86return | |
| 687 | |
| 688 | |
| 689 | |
| 690 | |
| 691 ;; 32 BIT RGB TO 16 BIT RGB 555 | |
| 692 | |
| 693 _ConvertX86p32_16RGB555: | |
| 694 | |
| 695 ; check short | |
| 696 cmp ecx,BYTE 16 | |
| 697 ja .L3 | |
| 698 | |
| 699 .L1 ; short loop | |
| 700 mov bl,[esi+0] ; blue | |
| 701 mov al,[esi+1] ; green | |
| 702 mov ah,[esi+2] ; red | |
| 703 shr ah,3 | |
| 704 and al,11111000b | |
| 705 shl eax,2 | |
| 706 shr bl,3 | |
| 707 add al,bl | |
| 708 mov [edi+0],al | |
| 709 mov [edi+1],ah | |
| 710 add esi,BYTE 4 | |
| 711 add edi,BYTE 2 | |
| 712 dec ecx | |
| 713 jnz .L1 | |
| 714 .L2 | |
| 715 jmp _x86return | |
| 716 | |
| 717 .L3 ; head | |
| 718 mov ebx,edi | |
| 719 and ebx,BYTE 11b | |
| 720 jz .L4 | |
| 721 mov bl,[esi+0] ; blue | |
| 722 mov al,[esi+1] ; green | |
| 723 mov ah,[esi+2] ; red | |
| 724 shr ah,3 | |
| 725 and al,11111000b | |
| 726 shl eax,2 | |
| 727 shr bl,3 | |
| 728 add al,bl | |
| 729 mov [edi+0],al | |
| 730 mov [edi+1],ah | |
| 731 add esi,BYTE 4 | |
| 732 add edi,BYTE 2 | |
| 733 dec ecx | |
| 734 | |
| 735 .L4 ; save count | |
| 736 push ecx | |
| 737 | |
| 738 ; unroll twice | |
| 739 shr ecx,1 | |
| 740 | |
| 741 ; point arrays to end | |
| 742 lea esi,[esi+ecx*8] | |
| 743 lea edi,[edi+ecx*4] | |
| 744 | |
| 745 ; negative counter | |
| 746 neg ecx | |
| 747 jmp SHORT .L6 | |
| 748 | |
| 749 .L5 | |
| 750 mov [edi+ecx*4-4],eax | |
| 751 .L6 | |
| 752 mov eax,[esi+ecx*8] | |
| 753 | |
| 754 shr ah,3 | |
| 755 mov ebx,[esi+ecx*8+4] | |
| 756 | |
| 757 shr eax,3 | |
| 758 mov edx,[esi+ecx*8+4] | |
| 759 | |
| 760 shr bh,3 | |
| 761 mov dl,[esi+ecx*8+2] | |
| 762 | |
| 763 shl ebx,13 | |
| 764 and eax,000007FFh | |
| 765 | |
| 766 shl edx,7 | |
| 767 and ebx,07FF0000h | |
| 768 | |
| 769 and edx,07C007C00h | |
| 770 add eax,ebx | |
| 771 | |
| 772 add eax,edx | |
| 773 inc ecx | |
| 774 | |
| 775 jnz .L5 | |
| 776 | |
| 777 mov [edi+ecx*4-4],eax | |
| 778 | |
| 779 ; tail | |
| 780 pop ecx | |
| 781 and ecx,BYTE 1 | |
| 782 jz .L7 | |
| 783 mov bl,[esi+0] ; blue | |
| 784 mov al,[esi+1] ; green | |
| 785 mov ah,[esi+2] ; red | |
| 786 shr ah,3 | |
| 787 and al,11111000b | |
| 788 shl eax,2 | |
| 789 shr bl,3 | |
| 790 add al,bl | |
| 791 mov [edi+0],al | |
| 792 mov [edi+1],ah | |
| 793 add esi,BYTE 4 | |
| 794 add edi,BYTE 2 | |
| 795 | |
| 796 .L7 | |
| 797 jmp _x86return | |
| 798 | |
| 799 | |
| 800 | |
| 801 | |
| 802 ;; 32 BIT RGB TO 16 BIT BGR 555 | |
| 803 | |
| 804 _ConvertX86p32_16BGR555: | |
| 805 | |
| 806 ; check short | |
| 807 cmp ecx,BYTE 16 | |
| 808 ja .L3 | |
| 809 | |
| 810 | |
| 811 .L1 ; short loop | |
| 812 mov ah,[esi+0] ; blue | |
| 813 mov al,[esi+1] ; green | |
| 814 mov bl,[esi+2] ; red | |
| 815 shr ah,3 | |
| 816 and al,11111000b | |
| 817 shl eax,2 | |
| 818 shr bl,3 | |
| 819 add al,bl | |
| 820 mov [edi+0],al | |
| 821 mov [edi+1],ah | |
| 822 add esi,BYTE 4 | |
| 823 add edi,BYTE 2 | |
| 824 dec ecx | |
| 825 jnz .L1 | |
| 826 .L2 | |
| 827 jmp _x86return | |
| 828 | |
| 829 .L3 ; head | |
| 830 mov ebx,edi | |
| 831 and ebx,BYTE 11b | |
| 832 jz .L4 | |
| 833 mov ah,[esi+0] ; blue | |
| 834 mov al,[esi+1] ; green | |
| 835 mov bl,[esi+2] ; red | |
| 836 shr ah,3 | |
| 837 and al,11111000b | |
| 838 shl eax,2 | |
| 839 shr bl,3 | |
| 840 add al,bl | |
| 841 mov [edi+0],al | |
| 842 mov [edi+1],ah | |
| 843 add esi,BYTE 4 | |
| 844 add edi,BYTE 2 | |
| 845 dec ecx | |
| 846 | |
| 847 .L4 ; save count | |
| 848 push ecx | |
| 849 | |
| 850 ; unroll twice | |
| 851 shr ecx,1 | |
| 852 | |
| 853 ; point arrays to end | |
| 854 lea esi,[esi+ecx*8] | |
| 855 lea edi,[edi+ecx*4] | |
| 856 | |
| 857 ; negative counter | |
| 858 neg ecx | |
| 859 jmp SHORT .L6 | |
| 860 | |
| 861 .L5 | |
| 862 mov [edi+ecx*4-4],eax | |
| 863 .L6 | |
| 864 mov edx,[esi+ecx*8+4] | |
| 865 | |
| 866 mov bh,[esi+ecx*8+4] | |
| 867 mov ah,[esi+ecx*8] | |
| 868 | |
| 869 shr bh,3 | |
| 870 mov al,[esi+ecx*8+1] | |
| 871 | |
| 872 shr ah,3 | |
| 873 mov bl,[esi+ecx*8+5] | |
| 874 | |
| 875 shl eax,2 | |
| 876 mov dl,[esi+ecx*8+2] | |
| 877 | |
| 878 shl ebx,18 | |
| 879 and eax,00007FE0h | |
| 880 | |
| 881 shr edx,3 | |
| 882 and ebx,07FE00000h | |
| 883 | |
| 884 and edx,001F001Fh | |
| 885 add eax,ebx | |
| 886 | |
| 887 add eax,edx | |
| 888 inc ecx | |
| 889 | |
| 890 jnz .L5 | |
| 891 | |
| 892 mov [edi+ecx*4-4],eax | |
| 893 | |
| 894 ; tail | |
| 895 pop ecx | |
| 896 and ecx,BYTE 1 | |
| 897 jz .L7 | |
| 898 mov ah,[esi+0] ; blue | |
| 899 mov al,[esi+1] ; green | |
| 900 mov bl,[esi+2] ; red | |
| 901 shr ah,3 | |
| 902 and al,11111000b | |
| 903 shl eax,2 | |
| 904 shr bl,3 | |
| 905 add al,bl | |
| 906 mov [edi+0],al | |
| 907 mov [edi+1],ah | |
| 908 add esi,BYTE 4 | |
| 909 add edi,BYTE 2 | |
| 910 | |
| 911 .L7 | |
| 912 jmp _x86return | |
| 913 | |
| 914 | |
| 915 | |
| 916 | |
| 917 | |
| 918 ;; FROM 32 BIT RGB to 8 BIT RGB (rrrgggbbb) | |
| 919 ;; This routine writes FOUR pixels at once (dword) and then, if they exist | |
| 920 ;; the trailing three pixels | |
| 921 _ConvertX86p32_8RGB332: | |
| 922 | |
| 923 | |
| 924 .L_ALIGNED | |
| 925 push ecx | |
| 926 | |
| 927 shr ecx,2 ; We will draw 4 pixels at once | |
| 928 jnz .L1 | |
| 929 | |
| 930 jmp .L2 ; short jump out of range :( | |
| 931 | |
| 932 .L1: | |
| 933 mov eax,[esi] ; first pair of pixels | |
| 934 mov edx,[esi+4] | |
| 935 | |
| 936 shr dl,6 | |
| 937 mov ebx,eax | |
| 938 | |
| 939 shr al,6 | |
| 940 and ah,0e0h | |
| 941 | |
| 942 shr ebx,16 | |
| 943 and dh,0e0h | |
| 944 | |
| 945 shr ah,3 | |
| 946 and bl,0e0h | |
| 947 | |
| 948 shr dh,3 | |
| 949 | |
| 950 or al,bl | |
| 951 | |
| 952 mov ebx,edx | |
| 953 or al,ah | |
| 954 | |
| 955 shr ebx,16 | |
| 956 or dl,dh | |
| 957 | |
| 958 and bl,0e0h | |
| 959 | |
| 960 or dl,bl | |
| 961 | |
| 962 mov ah,dl | |
| 963 | |
| 964 | |
| 965 | |
| 966 mov ebx,[esi+8] ; second pair of pixels | |
| 967 | |
| 968 mov edx,ebx | |
| 969 and bh,0e0h | |
| 970 | |
| 971 shr bl,6 | |
| 972 and edx,0e00000h | |
| 973 | |
| 974 shr edx,16 | |
| 975 | |
| 976 shr bh,3 | |
| 977 | |
| 978 ror eax,16 | |
| 979 or bl,dl | |
| 980 | |
| 981 mov edx,[esi+12] | |
| 982 or bl,bh | |
| 983 | |
| 984 mov al,bl | |
| 985 | |
| 986 mov ebx,edx | |
| 987 and dh,0e0h | |
| 988 | |
| 989 shr dl,6 | |
| 990 and ebx,0e00000h | |
| 991 | |
| 992 shr dh,3 | |
| 993 mov ah,dl | |
| 994 | |
| 995 shr ebx,16 | |
| 996 or ah,dh | |
| 997 | |
| 998 or ah,bl | |
| 999 | |
| 1000 rol eax,16 | |
| 1001 add esi,BYTE 16 | |
| 1002 | |
| 1003 mov [edi],eax | |
| 1004 add edi,BYTE 4 | |
| 1005 | |
| 1006 dec ecx | |
| 1007 jz .L2 ; L1 out of range for short jump :( | |
| 1008 | |
| 1009 jmp .L1 | |
| 1010 .L2: | |
| 1011 | |
| 1012 pop ecx | |
| 1013 and ecx,BYTE 3 ; mask out number of pixels to draw | |
| 1014 | |
| 1015 jz .L4 ; Nothing to do anymore | |
| 1016 | |
| 1017 .L3: | |
| 1018 mov eax,[esi] ; single pixel conversion for trailing pixels | |
| 1019 | |
| 1020 mov ebx,eax | |
| 1021 | |
| 1022 shr al,6 | |
| 1023 and ah,0e0h | |
| 1024 | |
| 1025 shr ebx,16 | |
| 1026 | |
| 1027 shr ah,3 | |
| 1028 and bl,0e0h | |
| 1029 | |
| 1030 or al,ah | |
| 1031 or al,bl | |
| 1032 | |
| 1033 mov [edi],al | |
| 1034 | |
| 1035 inc edi | |
| 1036 add esi,BYTE 4 | |
| 1037 | |
| 1038 dec ecx | |
| 1039 jnz .L3 | |
| 1040 | |
| 1041 .L4: | |
| 1042 jmp _x86return | |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
1043 |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
1044 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
1045 section .note.GNU-stack noalloc noexec nowrite progbits |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
1046 %endif |