Mercurial > sdl-ios-xcode
annotate src/hermes/mmxp2_32.asm @ 289:77b6110c797d
Fixed "short jump out of range" error in MMX code
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 01 Mar 2002 18:01:16 +0000 |
| parents | 74212992fb08 |
| children | da33b7e6d181 |
| 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 | |
| 32 SECTION .data | |
| 33 | |
| 34 ALIGN 8 | |
| 35 | |
| 36 ;; Constants for conversion routines | |
| 37 | |
| 38 mmx32_rgb888_mask dd 00ffffffh,00ffffffh | |
| 39 | |
| 40 mmx32_rgb565_b dd 000000f8h, 000000f8h | |
| 41 mmx32_rgb565_g dd 0000fc00h, 0000fc00h | |
| 42 mmx32_rgb565_r dd 00f80000h, 00f80000h | |
| 43 | |
| 44 mmx32_rgb555_rb dd 00f800f8h,00f800f8h | |
| 45 mmx32_rgb555_g dd 0000f800h,0000f800h | |
| 46 mmx32_rgb555_mul dd 20000008h,20000008h | |
| 47 mmx32_bgr555_mul dd 00082000h,00082000h | |
| 48 | |
| 49 | |
| 50 | |
| 51 SECTION .text | |
| 52 | |
| 53 _ConvertMMXpII32_24RGB888: | |
| 54 | |
| 55 ; set up mm6 as the mask, mm7 as zero | |
| 56 movq mm6, qword [mmx32_rgb888_mask] | |
| 57 pxor mm7, mm7 | |
| 58 | |
| 59 mov edx, ecx ; save ecx | |
| 60 and ecx, 0fffffffch ; clear lower two bits | |
| 61 jnz .L1 | |
| 62 jmp .L2 | |
| 63 | |
| 64 .L1: | |
| 65 | |
| 66 movq mm0, [esi] ; A R G B a r g b | |
| 67 pand mm0, mm6 ; 0 R G B 0 r g b | |
| 68 movq mm1, [esi+8] ; A R G B a r g b | |
| 69 pand mm1, mm6 ; 0 R G B 0 r g b | |
| 70 | |
| 71 movq mm2, mm0 ; 0 R G B 0 r g b | |
| 72 punpckhdq mm2, mm7 ; 0 0 0 0 0 R G B | |
| 73 punpckldq mm0, mm7 ; 0 0 0 0 0 r g b | |
| 74 psllq mm2, 24 ; 0 0 R G B 0 0 0 | |
| 75 por mm0, mm2 ; 0 0 R G B r g b | |
| 76 | |
| 77 movq mm3, mm1 ; 0 R G B 0 r g b | |
| 78 psllq mm3, 48 ; g b 0 0 0 0 0 0 | |
| 79 por mm0, mm3 ; g b R G B r g b | |
| 80 | |
| 81 movq mm4, mm1 ; 0 R G B 0 r g b | |
| 82 punpckhdq mm4, mm7 ; 0 0 0 0 0 R G B | |
| 83 punpckldq mm1, mm7 ; 0 0 0 0 0 r g b | |
| 84 psrlq mm1, 16 ; 0 0 0 R G B 0 r | |
| 85 psllq mm4, 8 ; 0 0 0 0 R G B 0 | |
| 86 por mm1, mm4 ; 0 0 0 0 R G B r | |
| 87 | |
| 88 movq [edi], mm0 | |
| 89 add esi, BYTE 16 | |
| 90 movd [edi+8], mm1 | |
| 91 add edi, BYTE 12 | |
| 92 sub ecx, BYTE 4 | |
| 93 jnz .L1 | |
| 94 | |
| 95 .L2: | |
| 96 mov ecx, edx | |
| 97 and ecx, BYTE 3 | |
| 98 jz .L4 | |
| 99 .L3: | |
| 100 mov al, [esi] | |
| 101 mov bl, [esi+1] | |
| 102 mov dl, [esi+2] | |
| 103 mov [edi], al | |
| 104 mov [edi+1], bl | |
| 105 mov [edi+2], dl | |
| 106 add esi, BYTE 4 | |
| 107 add edi, BYTE 3 | |
| 108 dec ecx | |
| 109 jnz .L3 | |
| 110 .L4: | |
| 111 jmp _mmxreturn | |
| 112 | |
| 113 | |
| 114 | |
| 115 _ConvertMMXpII32_16RGB565: | |
| 116 | |
| 117 ; set up masks | |
| 118 movq mm5, [mmx32_rgb565_b] | |
| 119 movq mm6, [mmx32_rgb565_g] | |
| 120 movq mm7, [mmx32_rgb565_r] | |
| 121 | |
| 122 mov edx, ecx | |
| 123 shr ecx, 2 | |
| 124 jnz .L1 | |
| 125 jmp .L2 ; not necessary at the moment, but doesn't hurt (much) | |
| 126 | |
| 127 .L1: | |
| 128 movq mm0, [esi] ; argb | |
| 129 movq mm1, mm0 ; argb | |
| 130 pand mm0, mm6 ; 00g0 | |
| 131 movq mm3, mm1 ; argb | |
| 132 pand mm1, mm5 ; 000b | |
| 133 pand mm3, mm7 ; 0r00 | |
| 134 pslld mm1, 2 ; 0 0 000000bb bbb00000 | |
| 135 por mm0, mm1 ; 0 0 ggggggbb bbb00000 | |
| 136 psrld mm0, 5 ; 0 0 00000ggg gggbbbbb | |
| 137 | |
| 138 movq mm4, [esi+8] ; argb | |
| 139 movq mm2, mm4 ; argb | |
| 140 pand mm4, mm6 ; 00g0 | |
| 141 movq mm1, mm2 ; argb | |
| 142 pand mm2, mm5 ; 000b | |
| 143 pand mm1, mm7 ; 0r00 | |
| 144 pslld mm2, 2 ; 0 0 000000bb bbb00000 | |
| 145 por mm4, mm2 ; 0 0 ggggggbb bbb00000 | |
| 146 psrld mm4, 5 ; 0 0 00000ggg gggbbbbb | |
| 147 | |
| 148 packuswb mm3, mm1 ; R 0 r 0 | |
| 149 packssdw mm0, mm4 ; as above.. ish | |
| 150 por mm0, mm3 ; done. | |
| 151 movq [edi], mm0 | |
| 152 | |
| 153 add esi, 16 | |
| 154 add edi, 8 | |
| 155 dec ecx | |
| 156 jnz .L1 | |
| 157 | |
| 158 .L2: | |
| 159 mov ecx, edx | |
| 160 and ecx, BYTE 3 | |
| 161 jz .L4 | |
| 162 .L3: | |
| 163 mov al, [esi] | |
| 164 mov bh, [esi+1] | |
| 165 mov ah, [esi+2] | |
| 166 shr al, 3 | |
| 167 and eax, 0F81Fh ; BYTE? | |
| 168 shr ebx, 5 | |
| 169 and ebx, 07E0h ; BYTE? | |
| 170 add eax, ebx | |
| 171 mov [edi], al | |
| 172 mov [edi+1], ah | |
| 173 add esi, BYTE 4 | |
| 174 add edi, BYTE 2 | |
| 175 dec ecx | |
| 176 jnz .L3 | |
| 177 | |
| 178 .L4: | |
| 179 jmp _mmxreturn | |
| 180 | |
| 181 | |
| 182 _ConvertMMXpII32_16BGR565: | |
| 183 | |
| 184 movq mm5, [mmx32_rgb565_r] | |
| 185 movq mm6, [mmx32_rgb565_g] | |
| 186 movq mm7, [mmx32_rgb565_b] | |
| 187 | |
| 188 mov edx, ecx | |
| 189 shr ecx, 2 | |
| 190 jnz .L1 | |
| 191 jmp .L2 | |
| 192 | |
| 193 .L1: | |
| 194 movq mm0, [esi] ; a r g b | |
| 195 movq mm1, mm0 ; a r g b | |
| 196 pand mm0, mm6 ; 0 0 g 0 | |
| 197 movq mm3, mm1 ; a r g b | |
| 198 pand mm1, mm5 ; 0 r 0 0 | |
| 199 pand mm3, mm7 ; 0 0 0 b | |
| 200 | |
| 201 psllq mm3, 16 ; 0 b 0 0 | |
| 202 psrld mm1, 14 ; 0 0 000000rr rrr00000 | |
| 203 por mm0, mm1 ; 0 0 ggggggrr rrr00000 | |
| 204 psrld mm0, 5 ; 0 0 00000ggg gggrrrrr | |
| 205 | |
| 206 movq mm4, [esi+8] ; a r g b | |
| 207 movq mm2, mm4 ; a r g b | |
| 208 pand mm4, mm6 ; 0 0 g 0 | |
| 209 movq mm1, mm2 ; a r g b | |
| 210 pand mm2, mm5 ; 0 r 0 0 | |
| 211 pand mm1, mm7 ; 0 0 0 b | |
| 212 | |
| 213 psllq mm1, 16 ; 0 b 0 0 | |
| 214 psrld mm2, 14 ; 0 0 000000rr rrr00000 | |
| 215 por mm4, mm2 ; 0 0 ggggggrr rrr00000 | |
| 216 psrld mm4, 5 ; 0 0 00000ggg gggrrrrr | |
| 217 | |
| 218 packuswb mm3, mm1 ; BBBBB000 00000000 bbbbb000 00000000 | |
| 219 packssdw mm0, mm4 ; 00000GGG GGGRRRRR 00000GGG GGGRRRRR | |
| 220 por mm0, mm3 ; BBBBBGGG GGGRRRRR bbbbbggg gggrrrrr | |
| 221 movq [edi], mm0 | |
| 222 | |
| 223 add esi, BYTE 16 | |
| 224 add edi, BYTE 8 | |
| 225 dec ecx | |
| 226 jnz .L1 | |
| 227 | |
| 228 .L2: | |
| 229 and edx, BYTE 3 | |
| 230 jz .L4 | |
| 231 .L3: | |
| 232 mov al, [esi+2] | |
| 233 mov bh, [esi+1] | |
| 234 mov ah, [esi] | |
| 235 shr al, 3 | |
| 236 and eax, 0F81Fh ; BYTE ? | |
| 237 shr ebx, 5 | |
| 238 and ebx, 07E0h ; BYTE ? | |
| 239 add eax, ebx | |
| 240 mov [edi], al | |
| 241 mov [edi+1], ah | |
| 242 add esi, BYTE 4 | |
| 243 add edi, BYTE 2 | |
| 244 dec edx | |
| 245 jnz .L3 | |
| 246 | |
| 247 .L4: | |
| 248 jmp _mmxreturn | |
| 249 | |
| 250 _ConvertMMXpII32_16BGR555: | |
| 251 | |
| 252 ; the 16BGR555 converter is identical to the RGB555 one, | |
| 253 ; except it uses a different multiplier for the pmaddwd | |
| 254 ; instruction. cool huh. | |
| 255 | |
| 256 movq mm7, qword [mmx32_bgr555_mul] | |
| 257 jmp _convert_bgr555_cheat | |
| 258 | |
| 259 ; This is the same as the Intel version.. they obviously went to | |
| 260 ; much more trouble to expand/coil the loop than I did, so theirs | |
| 261 ; would almost certainly be faster, even if only a little. | |
| 262 ; I did rename 'mmx32_rgb555_add' to 'mmx32_rgb555_mul', which is | |
| 263 ; (I think) a more accurate name.. | |
| 264 _ConvertMMXpII32_16RGB555: | |
| 265 | |
| 266 movq mm7,qword [mmx32_rgb555_mul] | |
| 267 _convert_bgr555_cheat: | |
| 268 movq mm6,qword [mmx32_rgb555_g] | |
| 269 | |
| 270 mov edx,ecx ; Save ecx | |
| 271 | |
| 272 and ecx,BYTE 0fffffff8h ; clear lower three bits | |
| 273 jnz .L_OK | |
|
289
77b6110c797d
Fixed "short jump out of range" error in MMX code
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
274 jmp near .L2 |
| 0 | 275 |
| 276 .L_OK: | |
| 277 | |
| 278 movq mm2,[esi+8] | |
| 279 | |
| 280 movq mm0,[esi] | |
| 281 movq mm3,mm2 | |
| 282 | |
| 283 pand mm3,qword [mmx32_rgb555_rb] | |
| 284 movq mm1,mm0 | |
| 285 | |
| 286 pand mm1,qword [mmx32_rgb555_rb] | |
| 287 pmaddwd mm3,mm7 | |
| 288 | |
| 289 pmaddwd mm1,mm7 | |
| 290 pand mm2,mm6 | |
| 291 | |
| 292 .L1: | |
| 293 movq mm4,[esi+24] | |
| 294 pand mm0,mm6 | |
| 295 | |
| 296 movq mm5,[esi+16] | |
| 297 por mm3,mm2 | |
| 298 | |
| 299 psrld mm3,6 | |
| 300 por mm1,mm0 | |
| 301 | |
| 302 movq mm0,mm4 | |
| 303 psrld mm1,6 | |
| 304 | |
| 305 pand mm0,qword [mmx32_rgb555_rb] | |
| 306 packssdw mm1,mm3 | |
| 307 | |
| 308 movq mm3,mm5 | |
| 309 pmaddwd mm0,mm7 | |
| 310 | |
| 311 pand mm3,qword [mmx32_rgb555_rb] | |
| 312 pand mm4,mm6 | |
| 313 | |
| 314 movq [edi],mm1 | |
| 315 pmaddwd mm3,mm7 | |
| 316 | |
| 317 add esi,BYTE 32 | |
| 318 por mm4,mm0 | |
| 319 | |
| 320 pand mm5,mm6 | |
| 321 psrld mm4,6 | |
| 322 | |
| 323 movq mm2,[esi+8] | |
| 324 por mm5,mm3 | |
| 325 | |
| 326 movq mm0,[esi] | |
| 327 psrld mm5,6 | |
| 328 | |
| 329 movq mm3,mm2 | |
| 330 movq mm1,mm0 | |
| 331 | |
| 332 pand mm3,qword [mmx32_rgb555_rb] | |
| 333 packssdw mm5,mm4 | |
| 334 | |
| 335 pand mm1,qword [mmx32_rgb555_rb] | |
| 336 pand mm2,mm6 | |
| 337 | |
| 338 movq [edi+8],mm5 | |
| 339 pmaddwd mm3,mm7 | |
| 340 | |
| 341 pmaddwd mm1,mm7 | |
| 342 add edi,BYTE 16 | |
| 343 | |
| 344 sub ecx,BYTE 8 | |
| 345 jz .L2 | |
| 346 jmp .L1 | |
| 347 | |
| 348 | |
| 349 .L2: | |
| 350 mov ecx,edx | |
| 351 | |
| 352 and ecx,BYTE 7 | |
| 353 jz .L4 | |
| 354 | |
| 355 .L3: | |
| 356 mov ebx,[esi] | |
| 357 add esi,BYTE 4 | |
| 358 | |
| 359 mov eax,ebx | |
| 360 mov edx,ebx | |
| 361 | |
| 362 shr eax,3 | |
| 363 shr edx,6 | |
| 364 | |
| 365 and eax,BYTE 0000000000011111b | |
| 366 and edx, 0000001111100000b | |
| 367 | |
| 368 shr ebx,9 | |
| 369 | |
| 370 or eax,edx | |
| 371 | |
| 372 and ebx, 0111110000000000b | |
| 373 | |
| 374 or eax,ebx | |
| 375 | |
| 376 mov [edi],ax | |
| 377 add edi,BYTE 2 | |
| 378 | |
| 379 dec ecx | |
| 380 jnz .L3 | |
| 381 | |
| 382 .L4: | |
| 383 jmp _mmxreturn | |
| 384 | |
| 385 | |
| 386 |