Mercurial > sdl-ios-xcode
annotate src/hermes/x86p_16.asm @ 1650:ee4f2d77206f
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 22 Apr 2006 19:50:23 +0000 |
| parents | 2d6dc7de1145 |
| children | 393092a3ebf6 |
| rev | line source |
|---|---|
| 0 | 1 ; |
| 2 ; x86 format converters for HERMES | |
| 3 ; Copyright (c) 1998 Glenn Fielder (gaffer@gaffer.org) | |
| 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 ; Routines adjusted for Hermes by Christian Nentwich (brn@eleet.mcb.at) | |
| 10 ; Used with permission. | |
| 11 ; | |
| 12 | |
| 13 | |
| 14 BITS 32 | |
| 15 | |
| 16 GLOBAL _ConvertX86p16_32RGB888 | |
| 17 GLOBAL _ConvertX86p16_32BGR888 | |
| 18 GLOBAL _ConvertX86p16_32RGBA888 | |
| 19 GLOBAL _ConvertX86p16_32BGRA888 | |
| 20 GLOBAL _ConvertX86p16_24RGB888 | |
| 21 GLOBAL _ConvertX86p16_24BGR888 | |
| 22 GLOBAL _ConvertX86p16_16BGR565 | |
| 23 GLOBAL _ConvertX86p16_16RGB555 | |
| 24 GLOBAL _ConvertX86p16_16BGR555 | |
| 25 GLOBAL _ConvertX86p16_8RGB332 | |
| 26 | |
| 27 EXTERN _ConvertX86 | |
| 28 EXTERN _x86return | |
| 29 | |
| 30 SECTION .text | |
| 31 | |
| 32 _ConvertX86p16_16BGR565: | |
| 33 | |
| 34 ; check short | |
| 35 cmp ecx,BYTE 16 | |
| 36 ja .L3 | |
| 37 | |
| 38 | |
| 39 .L1 ; short loop | |
| 40 mov al,[esi] | |
| 41 mov ah,[esi+1] | |
| 42 mov ebx,eax | |
| 43 mov edx,eax | |
| 44 shr eax,11 | |
| 45 and eax,BYTE 11111b | |
| 46 and ebx,11111100000b | |
| 47 shl edx,11 | |
| 48 add eax,ebx | |
| 49 add eax,edx | |
| 50 mov [edi],al | |
| 51 mov [edi+1],ah | |
| 52 add esi,BYTE 2 | |
| 53 add edi,BYTE 2 | |
| 54 dec ecx | |
| 55 jnz .L1 | |
| 56 .L2 | |
| 57 jmp _x86return | |
| 58 | |
| 59 .L3 ; head | |
| 60 mov eax,edi | |
| 61 and eax,BYTE 11b | |
| 62 jz .L4 | |
| 63 mov al,[esi] | |
| 64 mov ah,[esi+1] | |
| 65 mov ebx,eax | |
| 66 mov edx,eax | |
| 67 shr eax,11 | |
| 68 and eax,BYTE 11111b | |
| 69 and ebx,11111100000b | |
| 70 shl edx,11 | |
| 71 add eax,ebx | |
| 72 add eax,edx | |
| 73 mov [edi],al | |
| 74 mov [edi+1],ah | |
| 75 add esi,BYTE 2 | |
| 76 add edi,BYTE 2 | |
| 77 dec ecx | |
| 78 | |
| 79 .L4 ; save count | |
| 80 push ecx | |
| 81 | |
| 82 ; unroll twice | |
| 83 shr ecx,1 | |
| 84 | |
| 85 ; point arrays to end | |
| 86 lea esi,[esi+ecx*4] | |
| 87 lea edi,[edi+ecx*4] | |
| 88 | |
| 89 ; negative counter | |
| 90 neg ecx | |
| 91 jmp SHORT .L6 | |
| 92 | |
| 93 .L5 mov [edi+ecx*4-4],eax | |
| 94 .L6 mov eax,[esi+ecx*4] | |
| 95 | |
| 96 mov ebx,[esi+ecx*4] | |
| 97 and eax,07E007E0h | |
| 98 | |
| 99 mov edx,[esi+ecx*4] | |
| 100 and ebx,0F800F800h | |
| 101 | |
| 102 shr ebx,11 | |
| 103 and edx,001F001Fh | |
| 104 | |
| 105 shl edx,11 | |
| 106 add eax,ebx | |
| 107 | |
| 108 add eax,edx | |
| 109 inc ecx | |
| 110 | |
| 111 jnz .L5 | |
| 112 | |
| 113 mov [edi+ecx*4-4],eax | |
| 114 | |
| 115 ; tail | |
| 116 pop ecx | |
| 117 and ecx,BYTE 1 | |
| 118 jz .L7 | |
| 119 mov al,[esi] | |
| 120 mov ah,[esi+1] | |
| 121 mov ebx,eax | |
| 122 mov edx,eax | |
| 123 shr eax,11 | |
| 124 and eax,BYTE 11111b | |
| 125 and ebx,11111100000b | |
| 126 shl edx,11 | |
| 127 add eax,ebx | |
| 128 add eax,edx | |
| 129 mov [edi],al | |
| 130 mov [edi+1],ah | |
| 131 add esi,BYTE 2 | |
| 132 add edi,BYTE 2 | |
| 133 | |
| 134 .L7 | |
| 135 jmp _x86return | |
| 136 | |
| 137 | |
| 138 | |
| 139 | |
| 140 | |
| 141 | |
| 142 _ConvertX86p16_16RGB555: | |
| 143 | |
| 144 ; check short | |
| 145 cmp ecx,BYTE 32 | |
| 146 ja .L3 | |
| 147 | |
| 148 | |
| 149 .L1 ; short loop | |
| 150 mov al,[esi] | |
| 151 mov ah,[esi+1] | |
| 152 mov ebx,eax | |
| 153 shr ebx,1 | |
| 154 and ebx, 0111111111100000b | |
| 155 and eax,BYTE 0000000000011111b | |
| 156 add eax,ebx | |
| 157 mov [edi],al | |
| 158 mov [edi+1],ah | |
| 159 add esi,BYTE 2 | |
| 160 add edi,BYTE 2 | |
| 161 dec ecx | |
| 162 jnz .L1 | |
| 163 .L2 | |
| 164 jmp _x86return | |
| 165 | |
| 166 .L3 ; head | |
| 167 mov eax,edi | |
| 168 and eax,BYTE 11b | |
| 169 jz .L4 | |
| 170 mov al,[esi] | |
| 171 mov ah,[esi+1] | |
| 172 mov ebx,eax | |
| 173 shr ebx,1 | |
| 174 and ebx, 0111111111100000b | |
| 175 and eax,BYTE 0000000000011111b | |
| 176 add eax,ebx | |
| 177 mov [edi],al | |
| 178 mov [edi+1],ah | |
| 179 add esi,BYTE 2 | |
| 180 add edi,BYTE 2 | |
| 181 dec ecx | |
| 182 | |
| 183 .L4 ; save ebp | |
| 184 push ebp | |
| 185 | |
| 186 ; save count | |
| 187 push ecx | |
| 188 | |
| 189 ; unroll four times | |
| 190 shr ecx,2 | |
| 191 | |
| 192 ; point arrays to end | |
| 193 lea esi,[esi+ecx*8] | |
| 194 lea edi,[edi+ecx*8] | |
| 195 | |
| 196 ; negative counter | |
| 197 xor ebp,ebp | |
| 198 sub ebp,ecx | |
| 199 | |
| 200 .L5 mov eax,[esi+ebp*8] ; agi? | |
| 201 mov ecx,[esi+ebp*8+4] | |
| 202 | |
| 203 mov ebx,eax | |
| 204 mov edx,ecx | |
| 205 | |
| 206 and eax,0FFC0FFC0h | |
| 207 and ecx,0FFC0FFC0h | |
| 208 | |
| 209 shr eax,1 | |
| 210 and ebx,001F001Fh | |
| 211 | |
| 212 shr ecx,1 | |
| 213 and edx,001F001Fh | |
| 214 | |
| 215 add eax,ebx | |
| 216 add ecx,edx | |
| 217 | |
| 218 mov [edi+ebp*8],eax | |
| 219 mov [edi+ebp*8+4],ecx | |
| 220 | |
| 221 inc ebp | |
| 222 jnz .L5 | |
| 223 | |
| 224 ; tail | |
| 225 pop ecx | |
| 226 .L6 and ecx,BYTE 11b | |
| 227 jz .L7 | |
| 228 mov al,[esi] | |
| 229 mov ah,[esi+1] | |
| 230 mov ebx,eax | |
| 231 shr ebx,1 | |
| 232 and ebx, 0111111111100000b | |
| 233 and eax,BYTE 0000000000011111b | |
| 234 add eax,ebx | |
| 235 mov [edi],al | |
| 236 mov [edi+1],ah | |
| 237 add esi,BYTE 2 | |
| 238 add edi,BYTE 2 | |
| 239 dec ecx | |
| 240 jmp SHORT .L6 | |
| 241 | |
| 242 .L7 pop ebp | |
| 243 jmp _x86return | |
| 244 | |
| 245 | |
| 246 | |
| 247 | |
| 248 | |
| 249 | |
| 250 _ConvertX86p16_16BGR555: | |
| 251 | |
| 252 ; check short | |
| 253 cmp ecx,BYTE 16 | |
| 254 ja .L3 | |
| 255 | |
| 256 | |
| 257 .L1 ; short loop | |
| 258 mov al,[esi] | |
| 259 mov ah,[esi+1] | |
| 260 mov ebx,eax | |
| 261 mov edx,eax | |
| 262 shr eax,11 | |
| 263 and eax,BYTE 11111b | |
| 264 shr ebx,1 | |
| 265 and ebx,1111100000b | |
| 266 shl edx,10 | |
| 267 and edx,0111110000000000b | |
| 268 add eax,ebx | |
| 269 add eax,edx | |
| 270 mov [edi],al | |
| 271 mov [edi+1],ah | |
| 272 add esi,BYTE 2 | |
| 273 add edi,BYTE 2 | |
| 274 dec ecx | |
| 275 jnz .L1 | |
| 276 .L2 | |
| 277 jmp _x86return | |
| 278 | |
| 279 .L3 ; head | |
| 280 mov eax,edi | |
| 281 and eax,BYTE 11b | |
| 282 jz .L4 | |
| 283 mov al,[esi] | |
| 284 mov ah,[esi+1] | |
| 285 mov ebx,eax | |
| 286 mov edx,eax | |
| 287 shr eax,11 | |
| 288 and eax,BYTE 11111b | |
| 289 shr ebx,1 | |
| 290 and ebx,1111100000b | |
| 291 shl edx,10 | |
| 292 and edx,0111110000000000b | |
| 293 add eax,ebx | |
| 294 add eax,edx | |
| 295 mov [edi],al | |
| 296 mov [edi+1],ah | |
| 297 add esi,BYTE 2 | |
| 298 add edi,BYTE 2 | |
| 299 dec ecx | |
| 300 | |
| 301 .L4 ; save count | |
| 302 push ecx | |
| 303 | |
| 304 ; unroll twice | |
| 305 shr ecx,1 | |
| 306 | |
| 307 ; point arrays to end | |
| 308 lea esi,[esi+ecx*4] | |
| 309 lea edi,[edi+ecx*4] | |
| 310 | |
| 311 ; negative counter | |
| 312 neg ecx | |
| 313 jmp SHORT .L6 | |
| 314 | |
| 315 .L5 mov [edi+ecx*4-4],eax | |
| 316 .L6 mov eax,[esi+ecx*4] | |
| 317 | |
| 318 shr eax,1 | |
| 319 mov ebx,[esi+ecx*4] | |
| 320 | |
| 321 and eax,03E003E0h | |
| 322 mov edx,[esi+ecx*4] | |
| 323 | |
| 324 and ebx,0F800F800h | |
| 325 | |
| 326 shr ebx,11 | |
| 327 and edx,001F001Fh | |
| 328 | |
| 329 shl edx,10 | |
| 330 add eax,ebx | |
| 331 | |
| 332 add eax,edx | |
| 333 inc ecx | |
| 334 | |
| 335 jnz .L5 | |
| 336 | |
| 337 mov [edi+ecx*4-4],eax | |
| 338 | |
| 339 ; tail | |
| 340 pop ecx | |
| 341 and ecx,BYTE 1 | |
| 342 jz .L7 | |
| 343 mov al,[esi] | |
| 344 mov ah,[esi+1] | |
| 345 mov ebx,eax | |
| 346 mov edx,eax | |
| 347 shr eax,11 | |
| 348 and eax,BYTE 11111b | |
| 349 shr ebx,1 | |
| 350 and ebx,1111100000b | |
| 351 shl edx,10 | |
| 352 and edx,0111110000000000b | |
| 353 add eax,ebx | |
| 354 add eax,edx | |
| 355 mov [edi],al | |
| 356 mov [edi+1],ah | |
| 357 add esi,BYTE 2 | |
| 358 add edi,BYTE 2 | |
| 359 | |
| 360 .L7 | |
| 361 jmp _x86return | |
| 362 | |
| 363 | |
| 364 | |
| 365 | |
| 366 | |
| 367 | |
| 368 _ConvertX86p16_8RGB332: | |
| 369 | |
| 370 ; check short | |
| 371 cmp ecx,BYTE 16 | |
| 372 ja .L3 | |
| 373 | |
| 374 | |
| 375 .L1 ; short loop | |
| 376 mov al,[esi+0] | |
| 377 mov ah,[esi+1] | |
| 378 mov ebx,eax | |
| 379 mov edx,eax | |
| 380 and eax,BYTE 11000b ; blue | |
| 381 shr eax,3 | |
| 382 and ebx,11100000000b ; green | |
| 383 shr ebx,6 | |
| 384 and edx,1110000000000000b ; red | |
| 385 shr edx,8 | |
| 386 add eax,ebx | |
| 387 add eax,edx | |
| 388 mov [edi],al | |
| 389 add esi,BYTE 2 | |
| 390 inc edi | |
| 391 dec ecx | |
| 392 jnz .L1 | |
| 393 .L2 | |
| 394 jmp _x86return | |
| 395 | |
| 396 .L3 mov eax,edi | |
| 397 and eax,BYTE 11b | |
| 398 jz .L4 | |
| 399 mov al,[esi+0] | |
| 400 mov ah,[esi+1] | |
| 401 mov ebx,eax | |
| 402 mov edx,eax | |
| 403 and eax,BYTE 11000b ; blue | |
| 404 shr eax,3 | |
| 405 and ebx,11100000000b ; green | |
| 406 shr ebx,6 | |
| 407 and edx,1110000000000000b ; red | |
| 408 shr edx,8 | |
| 409 add eax,ebx | |
| 410 add eax,edx | |
| 411 mov [edi],al | |
| 412 add esi,BYTE 2 | |
| 413 inc edi | |
| 414 dec ecx | |
| 415 jmp SHORT .L3 | |
| 416 | |
| 417 .L4 ; save ebp | |
| 418 push ebp | |
| 419 | |
| 420 ; save count | |
| 421 push ecx | |
| 422 | |
| 423 ; unroll 4 times | |
| 424 shr ecx,2 | |
| 425 | |
| 426 ; prestep | |
| 427 mov dl,[esi+0] | |
| 428 mov bl,[esi+1] | |
| 429 mov dh,[esi+2] | |
| 430 | |
| 431 .L5 shl edx,16 | |
| 432 mov bh,[esi+3] | |
| 433 | |
| 434 shl ebx,16 | |
| 435 mov dl,[esi+4] | |
| 436 | |
| 437 mov dh,[esi+6] | |
| 438 mov bl,[esi+5] | |
| 439 | |
| 440 and edx,00011000000110000001100000011000b | |
| 441 mov bh,[esi+7] | |
| 442 | |
| 443 ror edx,16+3 | |
| 444 mov eax,ebx ; setup eax for reds | |
| 445 | |
| 446 and ebx,00000111000001110000011100000111b | |
| 447 and eax,11100000111000001110000011100000b ; reds | |
| 448 | |
| 449 ror ebx,16-2 | |
| 450 add esi,BYTE 8 | |
| 451 | |
| 452 ror eax,16 | |
| 453 add edi,BYTE 4 | |
| 454 | |
| 455 add eax,ebx | |
| 456 mov bl,[esi+1] ; greens | |
| 457 | |
| 458 add eax,edx | |
| 459 mov dl,[esi+0] ; blues | |
| 460 | |
| 461 mov [edi-4],eax | |
| 462 mov dh,[esi+2] | |
| 463 | |
| 464 dec ecx | |
| 465 jnz .L5 | |
| 466 | |
| 467 ; check tail | |
| 468 pop ecx | |
| 469 and ecx,BYTE 11b | |
| 470 jz .L7 | |
| 471 | |
| 472 .L6 ; tail | |
| 473 mov al,[esi+0] | |
| 474 mov ah,[esi+1] | |
| 475 mov ebx,eax | |
| 476 mov edx,eax | |
| 477 and eax,BYTE 11000b ; blue | |
| 478 shr eax,3 | |
| 479 and ebx,11100000000b ; green | |
| 480 shr ebx,6 | |
| 481 and edx,1110000000000000b ; red | |
| 482 shr edx,8 | |
| 483 add eax,ebx | |
| 484 add eax,edx | |
| 485 mov [edi],al | |
| 486 add esi,BYTE 2 | |
| 487 inc edi | |
| 488 dec ecx | |
| 489 jnz .L6 | |
| 490 | |
| 491 .L7 pop ebp | |
| 492 jmp _x86return | |
| 493 | |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
494 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
495 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
|
496 %endif |