Mercurial > sdl-ios-xcode
annotate src/hermes/mmxp2_32.asm @ 1230:88c2d6aed428
From Mike Frysinger and/or Gentoo:
- libsdl-PIC-load-mmx-masks-from-stack.patch
this one may be a little controversial ... the fix here is again that you cant
reference the memory addresses like this to load into a mmx register, so the
way to do it is to push two 32bit words onto the stack, load the 64bit value
off of the stack into the mmx register, and then adjust the stack so that
it's back to normal.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 05 Jan 2006 15:25:19 +0000 |
| parents | 2d6dc7de1145 |
| children | 393092a3ebf6 |
| rev | line source |
|---|---|
| 0 | 1 ; |
| 2 ; pII-optimised MMX format converters for HERMES | |
| 3 ; Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) | |
| 4 ; and (c) 1999 Jonathan Matthew (jmatthew@uq.net.au) | |
| 5 ; This source code is licensed under the GNU LGPL | |
| 6 ; | |
| 7 ; Please refer to the file COPYING.LIB contained in the distribution for | |
| 8 ; licensing conditions | |
| 9 ; | |
| 10 ; COPYRIGHT NOTICE | |
| 11 ; | |
| 12 ; This file partly contains code that is (c) Intel Corporation, specifically | |
| 13 ; the mode detection routine, and the converter to 15 bit (8 pixel | |
| 14 ; conversion routine from the mmx programming tutorial pages). | |
| 15 ; | |
| 16 ; | |
| 17 ; These routines aren't exactly pII optimised - it's just that as they | |
| 18 ; are, they're terrible on p5 MMXs, but less so on pIIs. Someone needs to | |
| 19 ; optimise them for p5 MMXs.. | |
| 20 | |
| 21 BITS 32 | |
| 22 | |
| 23 | |
| 24 GLOBAL _ConvertMMXpII32_24RGB888 | |
| 25 GLOBAL _ConvertMMXpII32_16RGB565 | |
| 26 GLOBAL _ConvertMMXpII32_16BGR565 | |
| 27 GLOBAL _ConvertMMXpII32_16RGB555 | |
| 28 GLOBAL _ConvertMMXpII32_16BGR555 | |
| 29 | |
| 30 EXTERN _mmxreturn | |
| 31 | |
|
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32 ;; Macros for conversion routines |
| 0 | 33 |
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34 %macro _push_immq_mask 1 |
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35 push dword %1 |
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36 push dword %1 |
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37 %endmacro |
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39 %macro load_immq 2 |
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40 _push_immq_mask %2 |
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41 movq %1, [esp] |
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42 %endmacro |
| 0 | 43 |
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44 %macro pand_immq 2 |
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45 _push_immq_mask %2 |
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46 pand %1, [esp] |
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47 %endmacro |
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48 |
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49 %define CLEANUP_IMMQ_LOADS(num) \ |
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50 add esp, byte 8 * num |
| 0 | 51 |
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52 %define mmx32_rgb888_mask 00ffffffh |
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53 %define mmx32_rgb565_b 000000f8h |
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54 %define mmx32_rgb565_g 0000fc00h |
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55 %define mmx32_rgb565_r 00f80000h |
| 0 | 56 |
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57 %define mmx32_rgb555_rb 00f800f8h |
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58 %define mmx32_rgb555_g 0000f800h |
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59 %define mmx32_rgb555_mul 20000008h |
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60 %define mmx32_bgr555_mul 00082000h |
| 0 | 61 |
| 62 SECTION .text | |
| 63 | |
| 64 _ConvertMMXpII32_24RGB888: | |
| 65 | |
| 66 ; set up mm6 as the mask, mm7 as zero | |
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67 load_immq mm6, mmx32_rgb888_mask |
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68 CLEANUP_IMMQ_LOADS(1) |
| 0 | 69 pxor mm7, mm7 |
| 70 | |
| 71 mov edx, ecx ; save ecx | |
| 72 and ecx, 0fffffffch ; clear lower two bits | |
| 73 jnz .L1 | |
| 74 jmp .L2 | |
| 75 | |
| 76 .L1: | |
| 77 | |
| 78 movq mm0, [esi] ; A R G B a r g b | |
| 79 pand mm0, mm6 ; 0 R G B 0 r g b | |
| 80 movq mm1, [esi+8] ; A R G B a r g b | |
| 81 pand mm1, mm6 ; 0 R G B 0 r g b | |
| 82 | |
| 83 movq mm2, mm0 ; 0 R G B 0 r g b | |
| 84 punpckhdq mm2, mm7 ; 0 0 0 0 0 R G B | |
| 85 punpckldq mm0, mm7 ; 0 0 0 0 0 r g b | |
| 86 psllq mm2, 24 ; 0 0 R G B 0 0 0 | |
| 87 por mm0, mm2 ; 0 0 R G B r g b | |
| 88 | |
| 89 movq mm3, mm1 ; 0 R G B 0 r g b | |
| 90 psllq mm3, 48 ; g b 0 0 0 0 0 0 | |
| 91 por mm0, mm3 ; g b R G B r g b | |
| 92 | |
| 93 movq mm4, mm1 ; 0 R G B 0 r g b | |
| 94 punpckhdq mm4, mm7 ; 0 0 0 0 0 R G B | |
| 95 punpckldq mm1, mm7 ; 0 0 0 0 0 r g b | |
| 96 psrlq mm1, 16 ; 0 0 0 R G B 0 r | |
| 97 psllq mm4, 8 ; 0 0 0 0 R G B 0 | |
| 98 por mm1, mm4 ; 0 0 0 0 R G B r | |
| 99 | |
| 100 movq [edi], mm0 | |
| 101 add esi, BYTE 16 | |
| 102 movd [edi+8], mm1 | |
| 103 add edi, BYTE 12 | |
| 104 sub ecx, BYTE 4 | |
| 105 jnz .L1 | |
| 106 | |
| 107 .L2: | |
| 108 mov ecx, edx | |
| 109 and ecx, BYTE 3 | |
| 110 jz .L4 | |
| 111 .L3: | |
| 112 mov al, [esi] | |
| 113 mov bl, [esi+1] | |
| 114 mov dl, [esi+2] | |
| 115 mov [edi], al | |
| 116 mov [edi+1], bl | |
| 117 mov [edi+2], dl | |
| 118 add esi, BYTE 4 | |
| 119 add edi, BYTE 3 | |
| 120 dec ecx | |
| 121 jnz .L3 | |
| 122 .L4: | |
| 123 jmp _mmxreturn | |
| 124 | |
| 125 | |
| 126 | |
| 127 _ConvertMMXpII32_16RGB565: | |
| 128 | |
| 129 ; set up masks | |
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130 load_immq mm5, mmx32_rgb565_b |
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131 load_immq mm6, mmx32_rgb565_g |
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132 load_immq mm7, mmx32_rgb565_r |
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133 CLEANUP_IMMQ_LOADS(3) |
| 0 | 134 |
| 135 mov edx, ecx | |
| 136 shr ecx, 2 | |
| 137 jnz .L1 | |
| 138 jmp .L2 ; not necessary at the moment, but doesn't hurt (much) | |
| 139 | |
| 140 .L1: | |
| 141 movq mm0, [esi] ; argb | |
| 142 movq mm1, mm0 ; argb | |
| 143 pand mm0, mm6 ; 00g0 | |
| 144 movq mm3, mm1 ; argb | |
| 145 pand mm1, mm5 ; 000b | |
| 146 pand mm3, mm7 ; 0r00 | |
| 147 pslld mm1, 2 ; 0 0 000000bb bbb00000 | |
| 148 por mm0, mm1 ; 0 0 ggggggbb bbb00000 | |
| 149 psrld mm0, 5 ; 0 0 00000ggg gggbbbbb | |
| 150 | |
| 151 movq mm4, [esi+8] ; argb | |
| 152 movq mm2, mm4 ; argb | |
| 153 pand mm4, mm6 ; 00g0 | |
| 154 movq mm1, mm2 ; argb | |
| 155 pand mm2, mm5 ; 000b | |
| 156 pand mm1, mm7 ; 0r00 | |
| 157 pslld mm2, 2 ; 0 0 000000bb bbb00000 | |
| 158 por mm4, mm2 ; 0 0 ggggggbb bbb00000 | |
| 159 psrld mm4, 5 ; 0 0 00000ggg gggbbbbb | |
| 160 | |
| 161 packuswb mm3, mm1 ; R 0 r 0 | |
| 162 packssdw mm0, mm4 ; as above.. ish | |
| 163 por mm0, mm3 ; done. | |
| 164 movq [edi], mm0 | |
| 165 | |
| 166 add esi, 16 | |
| 167 add edi, 8 | |
| 168 dec ecx | |
| 169 jnz .L1 | |
| 170 | |
| 171 .L2: | |
| 172 mov ecx, edx | |
| 173 and ecx, BYTE 3 | |
| 174 jz .L4 | |
| 175 .L3: | |
| 176 mov al, [esi] | |
| 177 mov bh, [esi+1] | |
| 178 mov ah, [esi+2] | |
| 179 shr al, 3 | |
| 180 and eax, 0F81Fh ; BYTE? | |
| 181 shr ebx, 5 | |
| 182 and ebx, 07E0h ; BYTE? | |
| 183 add eax, ebx | |
| 184 mov [edi], al | |
| 185 mov [edi+1], ah | |
| 186 add esi, BYTE 4 | |
| 187 add edi, BYTE 2 | |
| 188 dec ecx | |
| 189 jnz .L3 | |
| 190 | |
| 191 .L4: | |
| 192 jmp _mmxreturn | |
| 193 | |
| 194 | |
| 195 _ConvertMMXpII32_16BGR565: | |
| 196 | |
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197 load_immq mm5, mmx32_rgb565_r |
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198 load_immq mm6, mmx32_rgb565_g |
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199 load_immq mm7, mmx32_rgb565_b |
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200 CLEANUP_IMMQ_LOADS(3) |
| 0 | 201 |
| 202 mov edx, ecx | |
| 203 shr ecx, 2 | |
| 204 jnz .L1 | |
| 205 jmp .L2 | |
| 206 | |
| 207 .L1: | |
| 208 movq mm0, [esi] ; a r g b | |
| 209 movq mm1, mm0 ; a r g b | |
| 210 pand mm0, mm6 ; 0 0 g 0 | |
| 211 movq mm3, mm1 ; a r g b | |
| 212 pand mm1, mm5 ; 0 r 0 0 | |
| 213 pand mm3, mm7 ; 0 0 0 b | |
| 214 | |
| 215 psllq mm3, 16 ; 0 b 0 0 | |
| 216 psrld mm1, 14 ; 0 0 000000rr rrr00000 | |
| 217 por mm0, mm1 ; 0 0 ggggggrr rrr00000 | |
| 218 psrld mm0, 5 ; 0 0 00000ggg gggrrrrr | |
| 219 | |
| 220 movq mm4, [esi+8] ; a r g b | |
| 221 movq mm2, mm4 ; a r g b | |
| 222 pand mm4, mm6 ; 0 0 g 0 | |
| 223 movq mm1, mm2 ; a r g b | |
| 224 pand mm2, mm5 ; 0 r 0 0 | |
| 225 pand mm1, mm7 ; 0 0 0 b | |
| 226 | |
| 227 psllq mm1, 16 ; 0 b 0 0 | |
| 228 psrld mm2, 14 ; 0 0 000000rr rrr00000 | |
| 229 por mm4, mm2 ; 0 0 ggggggrr rrr00000 | |
| 230 psrld mm4, 5 ; 0 0 00000ggg gggrrrrr | |
| 231 | |
| 232 packuswb mm3, mm1 ; BBBBB000 00000000 bbbbb000 00000000 | |
| 233 packssdw mm0, mm4 ; 00000GGG GGGRRRRR 00000GGG GGGRRRRR | |
| 234 por mm0, mm3 ; BBBBBGGG GGGRRRRR bbbbbggg gggrrrrr | |
| 235 movq [edi], mm0 | |
| 236 | |
| 237 add esi, BYTE 16 | |
| 238 add edi, BYTE 8 | |
| 239 dec ecx | |
| 240 jnz .L1 | |
| 241 | |
| 242 .L2: | |
| 243 and edx, BYTE 3 | |
| 244 jz .L4 | |
| 245 .L3: | |
| 246 mov al, [esi+2] | |
| 247 mov bh, [esi+1] | |
| 248 mov ah, [esi] | |
| 249 shr al, 3 | |
| 250 and eax, 0F81Fh ; BYTE ? | |
| 251 shr ebx, 5 | |
| 252 and ebx, 07E0h ; BYTE ? | |
| 253 add eax, ebx | |
| 254 mov [edi], al | |
| 255 mov [edi+1], ah | |
| 256 add esi, BYTE 4 | |
| 257 add edi, BYTE 2 | |
| 258 dec edx | |
| 259 jnz .L3 | |
| 260 | |
| 261 .L4: | |
| 262 jmp _mmxreturn | |
| 263 | |
| 264 _ConvertMMXpII32_16BGR555: | |
| 265 | |
| 266 ; the 16BGR555 converter is identical to the RGB555 one, | |
| 267 ; except it uses a different multiplier for the pmaddwd | |
| 268 ; instruction. cool huh. | |
| 269 | |
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270 load_immq mm7, mmx32_bgr555_mul |
| 0 | 271 jmp _convert_bgr555_cheat |
| 272 | |
| 273 ; This is the same as the Intel version.. they obviously went to | |
| 274 ; much more trouble to expand/coil the loop than I did, so theirs | |
| 275 ; would almost certainly be faster, even if only a little. | |
| 276 ; I did rename 'mmx32_rgb555_add' to 'mmx32_rgb555_mul', which is | |
| 277 ; (I think) a more accurate name.. | |
| 278 _ConvertMMXpII32_16RGB555: | |
| 279 | |
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280 load_immq mm7, mmx32_rgb555_mul |
| 0 | 281 _convert_bgr555_cheat: |
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282 load_immq mm6, mmx32_rgb555_g |
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283 CLEANUP_IMMQ_LOADS(2) |
| 0 | 284 |
| 285 mov edx,ecx ; Save ecx | |
| 286 | |
| 287 and ecx,BYTE 0fffffff8h ; clear lower three bits | |
| 288 jnz .L_OK | |
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289
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289 jmp near .L2 |
| 0 | 290 |
| 291 .L_OK: | |
| 292 | |
| 293 movq mm2,[esi+8] | |
| 294 | |
| 295 movq mm0,[esi] | |
| 296 movq mm3,mm2 | |
| 297 | |
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298 pand_immq mm3, mmx32_rgb555_rb |
| 0 | 299 movq mm1,mm0 |
| 300 | |
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301 pand_immq mm1, mmx32_rgb555_rb |
| 0 | 302 pmaddwd mm3,mm7 |
| 303 | |
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304 CLEANUP_IMMQ_LOADS(2) |
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305 |
| 0 | 306 pmaddwd mm1,mm7 |
| 307 pand mm2,mm6 | |
| 308 | |
| 309 .L1: | |
| 310 movq mm4,[esi+24] | |
| 311 pand mm0,mm6 | |
| 312 | |
| 313 movq mm5,[esi+16] | |
| 314 por mm3,mm2 | |
| 315 | |
| 316 psrld mm3,6 | |
| 317 por mm1,mm0 | |
| 318 | |
| 319 movq mm0,mm4 | |
| 320 psrld mm1,6 | |
| 321 | |
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322 pand_immq mm0, mmx32_rgb555_rb |
| 0 | 323 packssdw mm1,mm3 |
| 324 | |
| 325 movq mm3,mm5 | |
| 326 pmaddwd mm0,mm7 | |
| 327 | |
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328 pand_immq mm3, mmx32_rgb555_rb |
| 0 | 329 pand mm4,mm6 |
| 330 | |
| 331 movq [edi],mm1 | |
| 332 pmaddwd mm3,mm7 | |
| 333 | |
| 334 add esi,BYTE 32 | |
| 335 por mm4,mm0 | |
| 336 | |
| 337 pand mm5,mm6 | |
| 338 psrld mm4,6 | |
| 339 | |
| 340 movq mm2,[esi+8] | |
| 341 por mm5,mm3 | |
| 342 | |
| 343 movq mm0,[esi] | |
| 344 psrld mm5,6 | |
| 345 | |
| 346 movq mm3,mm2 | |
| 347 movq mm1,mm0 | |
| 348 | |
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349 pand_immq mm3, mmx32_rgb555_rb |
| 0 | 350 packssdw mm5,mm4 |
| 351 | |
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352 pand_immq mm1, mmx32_rgb555_rb |
| 0 | 353 pand mm2,mm6 |
| 354 | |
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355 CLEANUP_IMMQ_LOADS(4) |
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356 |
| 0 | 357 movq [edi+8],mm5 |
| 358 pmaddwd mm3,mm7 | |
| 359 | |
| 360 pmaddwd mm1,mm7 | |
| 361 add edi,BYTE 16 | |
| 362 | |
| 363 sub ecx,BYTE 8 | |
| 364 jz .L2 | |
| 365 jmp .L1 | |
| 366 | |
| 367 | |
| 368 .L2: | |
| 369 mov ecx,edx | |
| 370 | |
| 371 and ecx,BYTE 7 | |
| 372 jz .L4 | |
| 373 | |
| 374 .L3: | |
| 375 mov ebx,[esi] | |
| 376 add esi,BYTE 4 | |
| 377 | |
| 378 mov eax,ebx | |
| 379 mov edx,ebx | |
| 380 | |
| 381 shr eax,3 | |
| 382 shr edx,6 | |
| 383 | |
| 384 and eax,BYTE 0000000000011111b | |
| 385 and edx, 0000001111100000b | |
| 386 | |
| 387 shr ebx,9 | |
| 388 | |
| 389 or eax,edx | |
| 390 | |
| 391 and ebx, 0111110000000000b | |
| 392 | |
| 393 or eax,ebx | |
| 394 | |
| 395 mov [edi],ax | |
| 396 add edi,BYTE 2 | |
| 397 | |
| 398 dec ecx | |
| 399 jnz .L3 | |
| 400 | |
| 401 .L4: | |
| 402 jmp _mmxreturn | |
| 403 | |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
404 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
405 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
|
406 %endif |