Mercurial > sdl-ios-xcode
annotate src/hermes/x86p_16.asm @ 1697:393092a3ebf6 SDL-1.3
Fixed bug #157
[patch tweaked to handle older nasm, which doesn't support :function syntax]
------- Comment #5 From Mike Frysinger 2006-05-22 01:24 [reply] -------
Created an attachment (id=132) [edit]
libsdl-hidden-nasm.patch
here's the patch i posted here:
http://www.libsdl.org/pipermail/sdl/2006-March/073618.html
this will hide the symbols dynamically if the build nasm/yasm supports the
hidden stuff ... in other words, this patch should be safe with both older and
new versions of nasm/yasm
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 21 Jun 2006 07:57:59 +0000 |
| parents | 2d6dc7de1145 |
| children | 4ce6deb843c5 |
| 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 BITS 32 | |
| 14 | |
| 1697 | 15 %include "common.asm" |
| 16 | |
| 17 SDL_FUNC _ConvertX86p16_16BGR565 | |
| 18 SDL_FUNC _ConvertX86p16_16RGB555 | |
| 19 SDL_FUNC _ConvertX86p16_16BGR555 | |
| 20 SDL_FUNC _ConvertX86p16_8RGB332 | |
| 0 | 21 |
| 22 EXTERN _ConvertX86 | |
| 23 EXTERN _x86return | |
| 24 | |
| 25 SECTION .text | |
| 26 | |
| 27 _ConvertX86p16_16BGR565: | |
| 28 | |
| 29 ; check short | |
| 30 cmp ecx,BYTE 16 | |
| 31 ja .L3 | |
| 32 | |
| 33 | |
| 34 .L1 ; short loop | |
| 35 mov al,[esi] | |
| 36 mov ah,[esi+1] | |
| 37 mov ebx,eax | |
| 38 mov edx,eax | |
| 39 shr eax,11 | |
| 40 and eax,BYTE 11111b | |
| 41 and ebx,11111100000b | |
| 42 shl edx,11 | |
| 43 add eax,ebx | |
| 44 add eax,edx | |
| 45 mov [edi],al | |
| 46 mov [edi+1],ah | |
| 47 add esi,BYTE 2 | |
| 48 add edi,BYTE 2 | |
| 49 dec ecx | |
| 50 jnz .L1 | |
| 51 .L2 | |
| 52 jmp _x86return | |
| 53 | |
| 54 .L3 ; head | |
| 55 mov eax,edi | |
| 56 and eax,BYTE 11b | |
| 57 jz .L4 | |
| 58 mov al,[esi] | |
| 59 mov ah,[esi+1] | |
| 60 mov ebx,eax | |
| 61 mov edx,eax | |
| 62 shr eax,11 | |
| 63 and eax,BYTE 11111b | |
| 64 and ebx,11111100000b | |
| 65 shl edx,11 | |
| 66 add eax,ebx | |
| 67 add eax,edx | |
| 68 mov [edi],al | |
| 69 mov [edi+1],ah | |
| 70 add esi,BYTE 2 | |
| 71 add edi,BYTE 2 | |
| 72 dec ecx | |
| 73 | |
| 74 .L4 ; save count | |
| 75 push ecx | |
| 76 | |
| 77 ; unroll twice | |
| 78 shr ecx,1 | |
| 79 | |
| 80 ; point arrays to end | |
| 81 lea esi,[esi+ecx*4] | |
| 82 lea edi,[edi+ecx*4] | |
| 83 | |
| 84 ; negative counter | |
| 85 neg ecx | |
| 86 jmp SHORT .L6 | |
| 87 | |
| 88 .L5 mov [edi+ecx*4-4],eax | |
| 89 .L6 mov eax,[esi+ecx*4] | |
| 90 | |
| 91 mov ebx,[esi+ecx*4] | |
| 92 and eax,07E007E0h | |
| 93 | |
| 94 mov edx,[esi+ecx*4] | |
| 95 and ebx,0F800F800h | |
| 96 | |
| 97 shr ebx,11 | |
| 98 and edx,001F001Fh | |
| 99 | |
| 100 shl edx,11 | |
| 101 add eax,ebx | |
| 102 | |
| 103 add eax,edx | |
| 104 inc ecx | |
| 105 | |
| 106 jnz .L5 | |
| 107 | |
| 108 mov [edi+ecx*4-4],eax | |
| 109 | |
| 110 ; tail | |
| 111 pop ecx | |
| 112 and ecx,BYTE 1 | |
| 113 jz .L7 | |
| 114 mov al,[esi] | |
| 115 mov ah,[esi+1] | |
| 116 mov ebx,eax | |
| 117 mov edx,eax | |
| 118 shr eax,11 | |
| 119 and eax,BYTE 11111b | |
| 120 and ebx,11111100000b | |
| 121 shl edx,11 | |
| 122 add eax,ebx | |
| 123 add eax,edx | |
| 124 mov [edi],al | |
| 125 mov [edi+1],ah | |
| 126 add esi,BYTE 2 | |
| 127 add edi,BYTE 2 | |
| 128 | |
| 129 .L7 | |
| 130 jmp _x86return | |
| 131 | |
| 132 | |
| 133 | |
| 134 | |
| 135 | |
| 136 | |
| 137 _ConvertX86p16_16RGB555: | |
| 138 | |
| 139 ; check short | |
| 140 cmp ecx,BYTE 32 | |
| 141 ja .L3 | |
| 142 | |
| 143 | |
| 144 .L1 ; short loop | |
| 145 mov al,[esi] | |
| 146 mov ah,[esi+1] | |
| 147 mov ebx,eax | |
| 148 shr ebx,1 | |
| 149 and ebx, 0111111111100000b | |
| 150 and eax,BYTE 0000000000011111b | |
| 151 add eax,ebx | |
| 152 mov [edi],al | |
| 153 mov [edi+1],ah | |
| 154 add esi,BYTE 2 | |
| 155 add edi,BYTE 2 | |
| 156 dec ecx | |
| 157 jnz .L1 | |
| 158 .L2 | |
| 159 jmp _x86return | |
| 160 | |
| 161 .L3 ; head | |
| 162 mov eax,edi | |
| 163 and eax,BYTE 11b | |
| 164 jz .L4 | |
| 165 mov al,[esi] | |
| 166 mov ah,[esi+1] | |
| 167 mov ebx,eax | |
| 168 shr ebx,1 | |
| 169 and ebx, 0111111111100000b | |
| 170 and eax,BYTE 0000000000011111b | |
| 171 add eax,ebx | |
| 172 mov [edi],al | |
| 173 mov [edi+1],ah | |
| 174 add esi,BYTE 2 | |
| 175 add edi,BYTE 2 | |
| 176 dec ecx | |
| 177 | |
| 178 .L4 ; save ebp | |
| 179 push ebp | |
| 180 | |
| 181 ; save count | |
| 182 push ecx | |
| 183 | |
| 184 ; unroll four times | |
| 185 shr ecx,2 | |
| 186 | |
| 187 ; point arrays to end | |
| 188 lea esi,[esi+ecx*8] | |
| 189 lea edi,[edi+ecx*8] | |
| 190 | |
| 191 ; negative counter | |
| 192 xor ebp,ebp | |
| 193 sub ebp,ecx | |
| 194 | |
| 195 .L5 mov eax,[esi+ebp*8] ; agi? | |
| 196 mov ecx,[esi+ebp*8+4] | |
| 197 | |
| 198 mov ebx,eax | |
| 199 mov edx,ecx | |
| 200 | |
| 201 and eax,0FFC0FFC0h | |
| 202 and ecx,0FFC0FFC0h | |
| 203 | |
| 204 shr eax,1 | |
| 205 and ebx,001F001Fh | |
| 206 | |
| 207 shr ecx,1 | |
| 208 and edx,001F001Fh | |
| 209 | |
| 210 add eax,ebx | |
| 211 add ecx,edx | |
| 212 | |
| 213 mov [edi+ebp*8],eax | |
| 214 mov [edi+ebp*8+4],ecx | |
| 215 | |
| 216 inc ebp | |
| 217 jnz .L5 | |
| 218 | |
| 219 ; tail | |
| 220 pop ecx | |
| 221 .L6 and ecx,BYTE 11b | |
| 222 jz .L7 | |
| 223 mov al,[esi] | |
| 224 mov ah,[esi+1] | |
| 225 mov ebx,eax | |
| 226 shr ebx,1 | |
| 227 and ebx, 0111111111100000b | |
| 228 and eax,BYTE 0000000000011111b | |
| 229 add eax,ebx | |
| 230 mov [edi],al | |
| 231 mov [edi+1],ah | |
| 232 add esi,BYTE 2 | |
| 233 add edi,BYTE 2 | |
| 234 dec ecx | |
| 235 jmp SHORT .L6 | |
| 236 | |
| 237 .L7 pop ebp | |
| 238 jmp _x86return | |
| 239 | |
| 240 | |
| 241 | |
| 242 | |
| 243 | |
| 244 | |
| 245 _ConvertX86p16_16BGR555: | |
| 246 | |
| 247 ; check short | |
| 248 cmp ecx,BYTE 16 | |
| 249 ja .L3 | |
| 250 | |
| 251 | |
| 252 .L1 ; short loop | |
| 253 mov al,[esi] | |
| 254 mov ah,[esi+1] | |
| 255 mov ebx,eax | |
| 256 mov edx,eax | |
| 257 shr eax,11 | |
| 258 and eax,BYTE 11111b | |
| 259 shr ebx,1 | |
| 260 and ebx,1111100000b | |
| 261 shl edx,10 | |
| 262 and edx,0111110000000000b | |
| 263 add eax,ebx | |
| 264 add eax,edx | |
| 265 mov [edi],al | |
| 266 mov [edi+1],ah | |
| 267 add esi,BYTE 2 | |
| 268 add edi,BYTE 2 | |
| 269 dec ecx | |
| 270 jnz .L1 | |
| 271 .L2 | |
| 272 jmp _x86return | |
| 273 | |
| 274 .L3 ; head | |
| 275 mov eax,edi | |
| 276 and eax,BYTE 11b | |
| 277 jz .L4 | |
| 278 mov al,[esi] | |
| 279 mov ah,[esi+1] | |
| 280 mov ebx,eax | |
| 281 mov edx,eax | |
| 282 shr eax,11 | |
| 283 and eax,BYTE 11111b | |
| 284 shr ebx,1 | |
| 285 and ebx,1111100000b | |
| 286 shl edx,10 | |
| 287 and edx,0111110000000000b | |
| 288 add eax,ebx | |
| 289 add eax,edx | |
| 290 mov [edi],al | |
| 291 mov [edi+1],ah | |
| 292 add esi,BYTE 2 | |
| 293 add edi,BYTE 2 | |
| 294 dec ecx | |
| 295 | |
| 296 .L4 ; save count | |
| 297 push ecx | |
| 298 | |
| 299 ; unroll twice | |
| 300 shr ecx,1 | |
| 301 | |
| 302 ; point arrays to end | |
| 303 lea esi,[esi+ecx*4] | |
| 304 lea edi,[edi+ecx*4] | |
| 305 | |
| 306 ; negative counter | |
| 307 neg ecx | |
| 308 jmp SHORT .L6 | |
| 309 | |
| 310 .L5 mov [edi+ecx*4-4],eax | |
| 311 .L6 mov eax,[esi+ecx*4] | |
| 312 | |
| 313 shr eax,1 | |
| 314 mov ebx,[esi+ecx*4] | |
| 315 | |
| 316 and eax,03E003E0h | |
| 317 mov edx,[esi+ecx*4] | |
| 318 | |
| 319 and ebx,0F800F800h | |
| 320 | |
| 321 shr ebx,11 | |
| 322 and edx,001F001Fh | |
| 323 | |
| 324 shl edx,10 | |
| 325 add eax,ebx | |
| 326 | |
| 327 add eax,edx | |
| 328 inc ecx | |
| 329 | |
| 330 jnz .L5 | |
| 331 | |
| 332 mov [edi+ecx*4-4],eax | |
| 333 | |
| 334 ; tail | |
| 335 pop ecx | |
| 336 and ecx,BYTE 1 | |
| 337 jz .L7 | |
| 338 mov al,[esi] | |
| 339 mov ah,[esi+1] | |
| 340 mov ebx,eax | |
| 341 mov edx,eax | |
| 342 shr eax,11 | |
| 343 and eax,BYTE 11111b | |
| 344 shr ebx,1 | |
| 345 and ebx,1111100000b | |
| 346 shl edx,10 | |
| 347 and edx,0111110000000000b | |
| 348 add eax,ebx | |
| 349 add eax,edx | |
| 350 mov [edi],al | |
| 351 mov [edi+1],ah | |
| 352 add esi,BYTE 2 | |
| 353 add edi,BYTE 2 | |
| 354 | |
| 355 .L7 | |
| 356 jmp _x86return | |
| 357 | |
| 358 | |
| 359 | |
| 360 | |
| 361 | |
| 362 | |
| 363 _ConvertX86p16_8RGB332: | |
| 364 | |
| 365 ; check short | |
| 366 cmp ecx,BYTE 16 | |
| 367 ja .L3 | |
| 368 | |
| 369 | |
| 370 .L1 ; short loop | |
| 371 mov al,[esi+0] | |
| 372 mov ah,[esi+1] | |
| 373 mov ebx,eax | |
| 374 mov edx,eax | |
| 375 and eax,BYTE 11000b ; blue | |
| 376 shr eax,3 | |
| 377 and ebx,11100000000b ; green | |
| 378 shr ebx,6 | |
| 379 and edx,1110000000000000b ; red | |
| 380 shr edx,8 | |
| 381 add eax,ebx | |
| 382 add eax,edx | |
| 383 mov [edi],al | |
| 384 add esi,BYTE 2 | |
| 385 inc edi | |
| 386 dec ecx | |
| 387 jnz .L1 | |
| 388 .L2 | |
| 389 jmp _x86return | |
| 390 | |
| 391 .L3 mov eax,edi | |
| 392 and eax,BYTE 11b | |
| 393 jz .L4 | |
| 394 mov al,[esi+0] | |
| 395 mov ah,[esi+1] | |
| 396 mov ebx,eax | |
| 397 mov edx,eax | |
| 398 and eax,BYTE 11000b ; blue | |
| 399 shr eax,3 | |
| 400 and ebx,11100000000b ; green | |
| 401 shr ebx,6 | |
| 402 and edx,1110000000000000b ; red | |
| 403 shr edx,8 | |
| 404 add eax,ebx | |
| 405 add eax,edx | |
| 406 mov [edi],al | |
| 407 add esi,BYTE 2 | |
| 408 inc edi | |
| 409 dec ecx | |
| 410 jmp SHORT .L3 | |
| 411 | |
| 412 .L4 ; save ebp | |
| 413 push ebp | |
| 414 | |
| 415 ; save count | |
| 416 push ecx | |
| 417 | |
| 418 ; unroll 4 times | |
| 419 shr ecx,2 | |
| 420 | |
| 421 ; prestep | |
| 422 mov dl,[esi+0] | |
| 423 mov bl,[esi+1] | |
| 424 mov dh,[esi+2] | |
| 425 | |
| 426 .L5 shl edx,16 | |
| 427 mov bh,[esi+3] | |
| 428 | |
| 429 shl ebx,16 | |
| 430 mov dl,[esi+4] | |
| 431 | |
| 432 mov dh,[esi+6] | |
| 433 mov bl,[esi+5] | |
| 434 | |
| 435 and edx,00011000000110000001100000011000b | |
| 436 mov bh,[esi+7] | |
| 437 | |
| 438 ror edx,16+3 | |
| 439 mov eax,ebx ; setup eax for reds | |
| 440 | |
| 441 and ebx,00000111000001110000011100000111b | |
| 442 and eax,11100000111000001110000011100000b ; reds | |
| 443 | |
| 444 ror ebx,16-2 | |
| 445 add esi,BYTE 8 | |
| 446 | |
| 447 ror eax,16 | |
| 448 add edi,BYTE 4 | |
| 449 | |
| 450 add eax,ebx | |
| 451 mov bl,[esi+1] ; greens | |
| 452 | |
| 453 add eax,edx | |
| 454 mov dl,[esi+0] ; blues | |
| 455 | |
| 456 mov [edi-4],eax | |
| 457 mov dh,[esi+2] | |
| 458 | |
| 459 dec ecx | |
| 460 jnz .L5 | |
| 461 | |
| 462 ; check tail | |
| 463 pop ecx | |
| 464 and ecx,BYTE 11b | |
| 465 jz .L7 | |
| 466 | |
| 467 .L6 ; tail | |
| 468 mov al,[esi+0] | |
| 469 mov ah,[esi+1] | |
| 470 mov ebx,eax | |
| 471 mov edx,eax | |
| 472 and eax,BYTE 11000b ; blue | |
| 473 shr eax,3 | |
| 474 and ebx,11100000000b ; green | |
| 475 shr ebx,6 | |
| 476 and edx,1110000000000000b ; red | |
| 477 shr edx,8 | |
| 478 add eax,ebx | |
| 479 add eax,edx | |
| 480 mov [edi],al | |
| 481 add esi,BYTE 2 | |
| 482 inc edi | |
| 483 dec ecx | |
| 484 jnz .L6 | |
| 485 | |
| 486 .L7 pop ebp | |
| 487 jmp _x86return | |
| 488 | |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
489 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
490 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
|
491 %endif |