Mercurial > sdl-ios-xcode
annotate src/hermes/x86p_16.asm @ 2157:75a6c5deba84
Fixed bug #451
SDL_memset4 copies a 32-bit value, not an 8-bit value.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 08 Jul 2007 14:24:55 +0000 |
| parents | 180fa05e98e2 |
| children |
| 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 | |
|
1873
eb4d9d99849b
Renamed, per Mike's comment on bug #157
Sam Lantinga <slouken@libsdl.org>
parents:
1871
diff
changeset
|
15 %include "common.inc" |
| 1871 | 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 | |
| 24 SECTION .text | |
| 25 | |
| 26 _ConvertX86p16_16BGR565: | |
| 27 | |
| 28 ; check short | |
| 29 cmp ecx,BYTE 16 | |
| 30 ja .L3 | |
| 31 | |
| 32 | |
| 33 .L1 ; short loop | |
| 34 mov al,[esi] | |
| 35 mov ah,[esi+1] | |
| 36 mov ebx,eax | |
| 37 mov edx,eax | |
| 38 shr eax,11 | |
| 39 and eax,BYTE 11111b | |
| 40 and ebx,11111100000b | |
| 41 shl edx,11 | |
| 42 add eax,ebx | |
| 43 add eax,edx | |
| 44 mov [edi],al | |
| 45 mov [edi+1],ah | |
| 46 add esi,BYTE 2 | |
| 47 add edi,BYTE 2 | |
| 48 dec ecx | |
| 49 jnz .L1 | |
| 50 .L2 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
51 retn |
| 0 | 52 |
| 53 .L3 ; head | |
| 54 mov eax,edi | |
| 55 and eax,BYTE 11b | |
| 56 jz .L4 | |
| 57 mov al,[esi] | |
| 58 mov ah,[esi+1] | |
| 59 mov ebx,eax | |
| 60 mov edx,eax | |
| 61 shr eax,11 | |
| 62 and eax,BYTE 11111b | |
| 63 and ebx,11111100000b | |
| 64 shl edx,11 | |
| 65 add eax,ebx | |
| 66 add eax,edx | |
| 67 mov [edi],al | |
| 68 mov [edi+1],ah | |
| 69 add esi,BYTE 2 | |
| 70 add edi,BYTE 2 | |
| 71 dec ecx | |
| 72 | |
| 73 .L4 ; save count | |
| 74 push ecx | |
| 75 | |
| 76 ; unroll twice | |
| 77 shr ecx,1 | |
| 78 | |
| 79 ; point arrays to end | |
| 80 lea esi,[esi+ecx*4] | |
| 81 lea edi,[edi+ecx*4] | |
| 82 | |
| 83 ; negative counter | |
| 84 neg ecx | |
| 85 jmp SHORT .L6 | |
| 86 | |
| 87 .L5 mov [edi+ecx*4-4],eax | |
| 88 .L6 mov eax,[esi+ecx*4] | |
| 89 | |
| 90 mov ebx,[esi+ecx*4] | |
| 91 and eax,07E007E0h | |
| 92 | |
| 93 mov edx,[esi+ecx*4] | |
| 94 and ebx,0F800F800h | |
| 95 | |
| 96 shr ebx,11 | |
| 97 and edx,001F001Fh | |
| 98 | |
| 99 shl edx,11 | |
| 100 add eax,ebx | |
| 101 | |
| 102 add eax,edx | |
| 103 inc ecx | |
| 104 | |
| 105 jnz .L5 | |
| 106 | |
| 107 mov [edi+ecx*4-4],eax | |
| 108 | |
| 109 ; tail | |
| 110 pop ecx | |
| 111 and ecx,BYTE 1 | |
| 112 jz .L7 | |
| 113 mov al,[esi] | |
| 114 mov ah,[esi+1] | |
| 115 mov ebx,eax | |
| 116 mov edx,eax | |
| 117 shr eax,11 | |
| 118 and eax,BYTE 11111b | |
| 119 and ebx,11111100000b | |
| 120 shl edx,11 | |
| 121 add eax,ebx | |
| 122 add eax,edx | |
| 123 mov [edi],al | |
| 124 mov [edi+1],ah | |
| 125 add esi,BYTE 2 | |
| 126 add edi,BYTE 2 | |
| 127 | |
| 128 .L7 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
129 retn |
| 0 | 130 |
| 131 | |
| 132 | |
| 133 | |
| 134 | |
| 135 | |
| 136 _ConvertX86p16_16RGB555: | |
| 137 | |
| 138 ; check short | |
| 139 cmp ecx,BYTE 32 | |
| 140 ja .L3 | |
| 141 | |
| 142 | |
| 143 .L1 ; short loop | |
| 144 mov al,[esi] | |
| 145 mov ah,[esi+1] | |
| 146 mov ebx,eax | |
| 147 shr ebx,1 | |
| 148 and ebx, 0111111111100000b | |
| 149 and eax,BYTE 0000000000011111b | |
| 150 add eax,ebx | |
| 151 mov [edi],al | |
| 152 mov [edi+1],ah | |
| 153 add esi,BYTE 2 | |
| 154 add edi,BYTE 2 | |
| 155 dec ecx | |
| 156 jnz .L1 | |
| 157 .L2 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
158 retn |
| 0 | 159 |
| 160 .L3 ; head | |
| 161 mov eax,edi | |
| 162 and eax,BYTE 11b | |
| 163 jz .L4 | |
| 164 mov al,[esi] | |
| 165 mov ah,[esi+1] | |
| 166 mov ebx,eax | |
| 167 shr ebx,1 | |
| 168 and ebx, 0111111111100000b | |
| 169 and eax,BYTE 0000000000011111b | |
| 170 add eax,ebx | |
| 171 mov [edi],al | |
| 172 mov [edi+1],ah | |
| 173 add esi,BYTE 2 | |
| 174 add edi,BYTE 2 | |
| 175 dec ecx | |
| 176 | |
| 177 .L4 ; save ebp | |
| 178 push ebp | |
| 179 | |
| 180 ; save count | |
| 181 push ecx | |
| 182 | |
| 183 ; unroll four times | |
| 184 shr ecx,2 | |
| 185 | |
| 186 ; point arrays to end | |
| 187 lea esi,[esi+ecx*8] | |
| 188 lea edi,[edi+ecx*8] | |
| 189 | |
| 190 ; negative counter | |
| 191 xor ebp,ebp | |
| 192 sub ebp,ecx | |
| 193 | |
| 194 .L5 mov eax,[esi+ebp*8] ; agi? | |
| 195 mov ecx,[esi+ebp*8+4] | |
| 196 | |
| 197 mov ebx,eax | |
| 198 mov edx,ecx | |
| 199 | |
| 200 and eax,0FFC0FFC0h | |
| 201 and ecx,0FFC0FFC0h | |
| 202 | |
| 203 shr eax,1 | |
| 204 and ebx,001F001Fh | |
| 205 | |
| 206 shr ecx,1 | |
| 207 and edx,001F001Fh | |
| 208 | |
| 209 add eax,ebx | |
| 210 add ecx,edx | |
| 211 | |
| 212 mov [edi+ebp*8],eax | |
| 213 mov [edi+ebp*8+4],ecx | |
| 214 | |
| 215 inc ebp | |
| 216 jnz .L5 | |
| 217 | |
| 218 ; tail | |
| 219 pop ecx | |
| 220 .L6 and ecx,BYTE 11b | |
| 221 jz .L7 | |
| 222 mov al,[esi] | |
| 223 mov ah,[esi+1] | |
| 224 mov ebx,eax | |
| 225 shr ebx,1 | |
| 226 and ebx, 0111111111100000b | |
| 227 and eax,BYTE 0000000000011111b | |
| 228 add eax,ebx | |
| 229 mov [edi],al | |
| 230 mov [edi+1],ah | |
| 231 add esi,BYTE 2 | |
| 232 add edi,BYTE 2 | |
| 233 dec ecx | |
| 234 jmp SHORT .L6 | |
| 235 | |
| 236 .L7 pop ebp | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
237 retn |
| 0 | 238 |
| 239 | |
| 240 | |
| 241 | |
| 242 | |
| 243 | |
| 244 _ConvertX86p16_16BGR555: | |
| 245 | |
| 246 ; check short | |
| 247 cmp ecx,BYTE 16 | |
| 248 ja .L3 | |
| 249 | |
| 250 | |
| 251 .L1 ; short loop | |
| 252 mov al,[esi] | |
| 253 mov ah,[esi+1] | |
| 254 mov ebx,eax | |
| 255 mov edx,eax | |
| 256 shr eax,11 | |
| 257 and eax,BYTE 11111b | |
| 258 shr ebx,1 | |
| 259 and ebx,1111100000b | |
| 260 shl edx,10 | |
| 261 and edx,0111110000000000b | |
| 262 add eax,ebx | |
| 263 add eax,edx | |
| 264 mov [edi],al | |
| 265 mov [edi+1],ah | |
| 266 add esi,BYTE 2 | |
| 267 add edi,BYTE 2 | |
| 268 dec ecx | |
| 269 jnz .L1 | |
| 270 .L2 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
271 retn |
| 0 | 272 |
| 273 .L3 ; head | |
| 274 mov eax,edi | |
| 275 and eax,BYTE 11b | |
| 276 jz .L4 | |
| 277 mov al,[esi] | |
| 278 mov ah,[esi+1] | |
| 279 mov ebx,eax | |
| 280 mov edx,eax | |
| 281 shr eax,11 | |
| 282 and eax,BYTE 11111b | |
| 283 shr ebx,1 | |
| 284 and ebx,1111100000b | |
| 285 shl edx,10 | |
| 286 and edx,0111110000000000b | |
| 287 add eax,ebx | |
| 288 add eax,edx | |
| 289 mov [edi],al | |
| 290 mov [edi+1],ah | |
| 291 add esi,BYTE 2 | |
| 292 add edi,BYTE 2 | |
| 293 dec ecx | |
| 294 | |
| 295 .L4 ; save count | |
| 296 push ecx | |
| 297 | |
| 298 ; unroll twice | |
| 299 shr ecx,1 | |
| 300 | |
| 301 ; point arrays to end | |
| 302 lea esi,[esi+ecx*4] | |
| 303 lea edi,[edi+ecx*4] | |
| 304 | |
| 305 ; negative counter | |
| 306 neg ecx | |
| 307 jmp SHORT .L6 | |
| 308 | |
| 309 .L5 mov [edi+ecx*4-4],eax | |
| 310 .L6 mov eax,[esi+ecx*4] | |
| 311 | |
| 312 shr eax,1 | |
| 313 mov ebx,[esi+ecx*4] | |
| 314 | |
| 315 and eax,03E003E0h | |
| 316 mov edx,[esi+ecx*4] | |
| 317 | |
| 318 and ebx,0F800F800h | |
| 319 | |
| 320 shr ebx,11 | |
| 321 and edx,001F001Fh | |
| 322 | |
| 323 shl edx,10 | |
| 324 add eax,ebx | |
| 325 | |
| 326 add eax,edx | |
| 327 inc ecx | |
| 328 | |
| 329 jnz .L5 | |
| 330 | |
| 331 mov [edi+ecx*4-4],eax | |
| 332 | |
| 333 ; tail | |
| 334 pop ecx | |
| 335 and ecx,BYTE 1 | |
| 336 jz .L7 | |
| 337 mov al,[esi] | |
| 338 mov ah,[esi+1] | |
| 339 mov ebx,eax | |
| 340 mov edx,eax | |
| 341 shr eax,11 | |
| 342 and eax,BYTE 11111b | |
| 343 shr ebx,1 | |
| 344 and ebx,1111100000b | |
| 345 shl edx,10 | |
| 346 and edx,0111110000000000b | |
| 347 add eax,ebx | |
| 348 add eax,edx | |
| 349 mov [edi],al | |
| 350 mov [edi+1],ah | |
| 351 add esi,BYTE 2 | |
| 352 add edi,BYTE 2 | |
| 353 | |
| 354 .L7 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
355 retn |
| 0 | 356 |
| 357 | |
| 358 | |
| 359 | |
| 360 | |
| 361 | |
| 362 _ConvertX86p16_8RGB332: | |
| 363 | |
| 364 ; check short | |
| 365 cmp ecx,BYTE 16 | |
| 366 ja .L3 | |
| 367 | |
| 368 | |
| 369 .L1 ; short loop | |
| 370 mov al,[esi+0] | |
| 371 mov ah,[esi+1] | |
| 372 mov ebx,eax | |
| 373 mov edx,eax | |
| 374 and eax,BYTE 11000b ; blue | |
| 375 shr eax,3 | |
| 376 and ebx,11100000000b ; green | |
| 377 shr ebx,6 | |
| 378 and edx,1110000000000000b ; red | |
| 379 shr edx,8 | |
| 380 add eax,ebx | |
| 381 add eax,edx | |
| 382 mov [edi],al | |
| 383 add esi,BYTE 2 | |
| 384 inc edi | |
| 385 dec ecx | |
| 386 jnz .L1 | |
| 387 .L2 | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
388 retn |
| 0 | 389 |
| 390 .L3 mov eax,edi | |
| 391 and eax,BYTE 11b | |
| 392 jz .L4 | |
| 393 mov al,[esi+0] | |
| 394 mov ah,[esi+1] | |
| 395 mov ebx,eax | |
| 396 mov edx,eax | |
| 397 and eax,BYTE 11000b ; blue | |
| 398 shr eax,3 | |
| 399 and ebx,11100000000b ; green | |
| 400 shr ebx,6 | |
| 401 and edx,1110000000000000b ; red | |
| 402 shr edx,8 | |
| 403 add eax,ebx | |
| 404 add eax,edx | |
| 405 mov [edi],al | |
| 406 add esi,BYTE 2 | |
| 407 inc edi | |
| 408 dec ecx | |
| 409 jmp SHORT .L3 | |
| 410 | |
| 411 .L4 ; save ebp | |
| 412 push ebp | |
| 413 | |
| 414 ; save count | |
| 415 push ecx | |
| 416 | |
| 417 ; unroll 4 times | |
| 418 shr ecx,2 | |
| 419 | |
| 420 ; prestep | |
| 421 mov dl,[esi+0] | |
| 422 mov bl,[esi+1] | |
| 423 mov dh,[esi+2] | |
| 424 | |
| 425 .L5 shl edx,16 | |
| 426 mov bh,[esi+3] | |
| 427 | |
| 428 shl ebx,16 | |
| 429 mov dl,[esi+4] | |
| 430 | |
| 431 mov dh,[esi+6] | |
| 432 mov bl,[esi+5] | |
| 433 | |
| 434 and edx,00011000000110000001100000011000b | |
| 435 mov bh,[esi+7] | |
| 436 | |
| 437 ror edx,16+3 | |
| 438 mov eax,ebx ; setup eax for reds | |
| 439 | |
| 440 and ebx,00000111000001110000011100000111b | |
| 441 and eax,11100000111000001110000011100000b ; reds | |
| 442 | |
| 443 ror ebx,16-2 | |
| 444 add esi,BYTE 8 | |
| 445 | |
| 446 ror eax,16 | |
| 447 add edi,BYTE 4 | |
| 448 | |
| 449 add eax,ebx | |
| 450 mov bl,[esi+1] ; greens | |
| 451 | |
| 452 add eax,edx | |
| 453 mov dl,[esi+0] ; blues | |
| 454 | |
| 455 mov [edi-4],eax | |
| 456 mov dh,[esi+2] | |
| 457 | |
| 458 dec ecx | |
| 459 jnz .L5 | |
| 460 | |
| 461 ; check tail | |
| 462 pop ecx | |
| 463 and ecx,BYTE 11b | |
| 464 jz .L7 | |
| 465 | |
| 466 .L6 ; tail | |
| 467 mov al,[esi+0] | |
| 468 mov ah,[esi+1] | |
| 469 mov ebx,eax | |
| 470 mov edx,eax | |
| 471 and eax,BYTE 11000b ; blue | |
| 472 shr eax,3 | |
| 473 and ebx,11100000000b ; green | |
| 474 shr ebx,6 | |
| 475 and edx,1110000000000000b ; red | |
| 476 shr edx,8 | |
| 477 add eax,ebx | |
| 478 add eax,edx | |
| 479 mov [edi],al | |
| 480 add esi,BYTE 2 | |
| 481 inc edi | |
| 482 dec ecx | |
| 483 jnz .L6 | |
| 484 | |
| 485 .L7 pop ebp | |
|
2134
180fa05e98e2
Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
parents:
1873
diff
changeset
|
486 retn |
| 0 | 487 |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
488 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
489 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
|
490 %endif |