| cc68a136 |
1 | @ assembly "optimized" version of some funtions from draw.c\r |
| 2 | @ this is highly specialized, be careful if changing related C code!\r |
| 3 | \r |
| 4 | @ (c) Copyright 2006, notaz\r |
| 5 | @ All Rights Reserved\r |
| 6 | \r |
| 7 | \r |
| 8 | .extern Pico\r |
| 9 | .extern PicoOpt\r |
| 10 | .extern HighCol\r |
| 11 | .extern Scanline\r |
| 12 | .extern HighSprZ\r |
| 13 | .extern rendstatus\r |
| 14 | .extern DrawLineDest\r |
| 15 | .extern DrawStripVSRam\r |
| 16 | .extern DrawStripInterlace\r |
| 17 | \r |
| 18 | \r |
| 19 | @ helper\r |
| 20 | .macro TilePixel pat lsrr offs\r |
| 21 | .if !\lsrr\r |
| 22 | ands r4, \pat, r2\r |
| 23 | .else\r |
| 24 | ands r4, \pat, r2, lsr #\lsrr\r |
| 25 | .endif\r |
| 26 | orrne r4, r3, r4\r |
| 27 | strneb r4, [r1,#\offs]\r |
| 28 | .endm\r |
| 29 | \r |
| 30 | @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf\r |
| 31 | .macro TileNorm pat\r |
| 32 | TilePixel \pat, 12, 0 @ #0x0000f000\r |
| 33 | TilePixel \pat, 8, 1 @ #0x00000f00\r |
| 34 | TilePixel \pat, 4, 2 @ #0x000000f0\r |
| 35 | TilePixel \pat, 0, 3 @ #0x0000000f\r |
| 36 | TilePixel \pat, 28, 4 @ #0xf0000000\r |
| 37 | TilePixel \pat, 24, 5 @ #0x0f000000\r |
| 38 | TilePixel \pat, 20, 6 @ #0x00f00000\r |
| 39 | TilePixel \pat, 16, 7 @ #0x000f0000\r |
| 40 | .endm\r |
| 41 | \r |
| 42 | @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf\r |
| 43 | .macro TileFlip pat\r |
| 44 | TilePixel \pat, 16, 0 @ #0x000f0000\r |
| 45 | TilePixel \pat, 20, 1 @ #0x00f00000\r |
| 46 | TilePixel \pat, 24, 2 @ #0x0f000000\r |
| 47 | TilePixel \pat, 28, 3 @ #0xf0000000\r |
| 48 | TilePixel \pat, 0, 4 @ #0x0000000f\r |
| 49 | TilePixel \pat, 4, 5 @ #0x000000f0\r |
| 50 | TilePixel \pat, 8, 6 @ #0x00000f00\r |
| 51 | TilePixel \pat, 12, 7 @ #0x0000f000\r |
| 52 | .endm\r |
| 53 | \r |
| 54 | @ shadow/hilight mode\r |
| 55 | \r |
| 56 | @ this one is for hi priority layer\r |
| 57 | .macro TilePixelShHP lsrr offs\r |
| 58 | .if !\lsrr\r |
| 59 | ands r4, r12, r2\r |
| 60 | .else\r |
| 61 | ands r4, r12, r2, lsr #\lsrr\r |
| 62 | .endif\r |
| 63 | ldreqb r4, [r1,#\offs]\r |
| 64 | orrne r4, r3, r4\r |
| 65 | strneb r4, [r1,#\offs]\r |
| 66 | tsteq r4, #0x80\r |
| 67 | andeq r4, r4, #0x3f\r |
| 68 | streqb r4, [r1,#\offs]\r |
| 69 | .endm\r |
| 70 | \r |
| 71 | @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: register with helper pattern 0xf, touches r3 high bits\r |
| 72 | .macro TileNormShHP\r |
| 73 | TilePixelShHP 12, 0 @ #0x0000f000\r |
| 74 | TilePixelShHP 8, 1 @ #0x00000f00\r |
| 75 | TilePixelShHP 4, 2 @ #0x000000f0\r |
| 76 | TilePixelShHP 0, 3 @ #0x0000000f\r |
| 77 | TilePixelShHP 28, 4 @ #0xf0000000\r |
| 78 | TilePixelShHP 24, 5 @ #0x0f000000\r |
| 79 | TilePixelShHP 20, 6 @ #0x00f00000\r |
| 80 | TilePixelShHP 16, 7 @ #0x000f0000\r |
| 81 | .endm\r |
| 82 | \r |
| 83 | @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf\r |
| 84 | .macro TileFlipShHP\r |
| 85 | TilePixelShHP 16, 0 @ #0x000f0000\r |
| 86 | TilePixelShHP 20, 1 @ #0x00f00000\r |
| 87 | TilePixelShHP 24, 2 @ #0x0f000000\r |
| 88 | TilePixelShHP 28, 3 @ #0xf0000000\r |
| 89 | TilePixelShHP 0, 4 @ #0x0000000f\r |
| 90 | TilePixelShHP 4, 5 @ #0x000000f0\r |
| 91 | TilePixelShHP 8, 6 @ #0x00000f00\r |
| 92 | TilePixelShHP 12, 7 @ #0x0000f000\r |
| 93 | .endm\r |
| 94 | \r |
| 95 | \r |
| 96 | @ TileSingleSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx; r12: helper pattern 0xf\r |
| 97 | .macro TileSingleSh\r |
| 98 | tst r0, #1 @ not aligned?\r |
| 99 | mov r7, #0x00c000\r |
| 100 | orr r7, r7, #0xc0\r |
| 101 | ldrneb r4, [r1]\r |
| 102 | ldreqh r4, [r1]\r |
| 103 | orr r4, r4, r7\r |
| 104 | strneb r4, [r1], #1\r |
| 105 | streqh r4, [r1], #2\r |
| 106 | ldrh r4, [r1]\r |
| 107 | orr r4, r4, r7\r |
| 108 | strh r4, [r1], #2\r |
| 109 | ldrh r4, [r1]\r |
| 110 | orr r4, r4, r7\r |
| 111 | strh r4, [r1], #2\r |
| 112 | ldrh r4, [r1]\r |
| 113 | orr r4, r4, r7\r |
| 114 | strh r4, [r1], #2\r |
| 115 | ldrneb r4, [r1]\r |
| 116 | orr r4, r4, r7\r |
| 117 | strneb r4, [r1], #1\r |
| 118 | .endm\r |
| 119 | \r |
| 120 | @ TileSingleHi (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf\r |
| 121 | .macro TileSingleHi\r |
| 122 | tst r1, #1 @ not aligned?\r |
| 123 | mov r7, #0x008000\r |
| 124 | orr r7, r7, #0x80\r |
| 125 | ldrneb r4, [r1], #1\r |
| 126 | ldreqh r4, [r1], #2 @ 1ci\r |
| 127 | ldrh r12, [r1], #2\r |
| 128 | bic r4, r4, r7, lsr #1\r |
| 129 | orr r4, r4, r7\r |
| 130 | strneb r4, [r1, #-3]\r |
| 131 | streqh r4, [r1, #-4]\r |
| 132 | ldrh r4, [r1], #2\r |
| 133 | bic r12, r12, r7, lsr #1\r |
| 134 | orr r12, r12, r7\r |
| 135 | strh r12, [r1, #-4]\r |
| 136 | ldrh r12, [r1], #2\r |
| 137 | bic r4, r4, r7, lsr #1\r |
| 138 | orr r4, r4, r7\r |
| 139 | strh r4, [r1, #-4]\r |
| 140 | ldrneb r4, [r1]\r |
| 141 | bic r12, r12, r7, lsr #1\r |
| 142 | orr r12, r12, r7\r |
| 143 | strh r12, [r1, #-2]\r |
| 144 | bicne r4, r4, r7, lsr #1\r |
| 145 | orrne r4, r4, r7\r |
| 146 | strneb r4, [r1], #1\r |
| 147 | mov r12, #0xf\r |
| 148 | .endm\r |
| 149 | \r |
| 150 | .macro TileDoShGenPixel shift ofs\r |
| 151 | .if \shift\r |
| 152 | ands r4, r12, r2, lsr #\shift\r |
| 153 | .else\r |
| 154 | ands r4, r12, r2\r |
| 155 | .endif\r |
| 156 | beq 3f\r |
| 157 | cmp r4, #0xe\r |
| 158 | beq 2f\r |
| 159 | bgt 1f\r |
| 160 | orr r4, r3, r4\r |
| 161 | strb r4, [r1,#\ofs]\r |
| 162 | b 3f\r |
| 163 | 1:\r |
| 164 | ldrb r4, [r1,#\ofs] @ 2ci\r |
| 165 | orr r4, r4, #0xc0\r |
| 166 | strb r4, [r1,#\ofs]\r |
| 167 | b 3f\r |
| 168 | 2:\r |
| 169 | ldrb r4, [r1,#\ofs] @ 2ci\r |
| 170 | bic r4, r4, #0xc0\r |
| 171 | orr r4, r4, #0x80\r |
| 172 | strb r4, [r1,#\ofs]\r |
| 173 | 3:\r |
| 174 | .endm\r |
| 175 | \r |
| 176 | @ TileFlipSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf\r |
| 177 | .macro TileFlipSh\r |
| 178 | TileDoShGenPixel 16, 0 @ #0x000f0000\r |
| 179 | TileDoShGenPixel 20, 1 @ #0x00f00000\r |
| 180 | TileDoShGenPixel 24, 2 @ #0x0f000000\r |
| 181 | TileDoShGenPixel 28, 3 @ #0xf0000000\r |
| 182 | TileDoShGenPixel 0, 4 @ #0x0000000f\r |
| 183 | TileDoShGenPixel 4, 5 @ #0x000000f0\r |
| 184 | TileDoShGenPixel 8, 6 @ #0x00000f00\r |
| 185 | TileDoShGenPixel 12, 7 @ #0x0000f000\r |
| 186 | .endm\r |
| 187 | \r |
| 188 | @ TileNormSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf\r |
| 189 | .macro TileNormSh\r |
| 190 | TileDoShGenPixel 12, 0 @ #0x0000f000\r |
| 191 | TileDoShGenPixel 8, 1 @ #0x00000f00\r |
| 192 | TileDoShGenPixel 4, 2 @ #0x000000f0\r |
| 193 | TileDoShGenPixel 0, 3 @ #0x0000000f\r |
| 194 | TileDoShGenPixel 28, 4 @ #0xf0000000\r |
| 195 | TileDoShGenPixel 24, 5 @ #0x0f000000\r |
| 196 | TileDoShGenPixel 20, 6 @ #0x00f00000\r |
| 197 | TileDoShGenPixel 16, 7 @ #0x000f0000\r |
| 198 | .endm\r |
| 199 | \r |
| 200 | \r |
| 201 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 202 | \r |
| 203 | @ struct TileStrip\r |
| 204 | @ {\r |
| 205 | @ int nametab; // 0x00\r |
| 206 | @ int line; // 0x04\r |
| 207 | @ int hscroll; // 0x08\r |
| 208 | @ int xmask; // 0x0C\r |
| 209 | @ int *hc; // 0x10 (pointer to cache buffer)\r |
| 210 | @ int cells; // 0x14\r |
| 211 | @ };\r |
| 212 | \r |
| 213 | @ int DrawLayer(int plane, int *hcache, int maxcells, int sh)\r |
| 214 | \r |
| 215 | .global DrawLayer @ int plane, int *hcache, int maxcells, int sh\r |
| 216 | \r |
| 217 | DrawLayer:\r |
| 218 | stmfd sp!, {r4-r11,lr}\r |
| 219 | \r |
| 220 | ldr r11, =(Pico+0x22228) @ Pico.video\r |
| 221 | mov r8, #1\r |
| 222 | \r |
| 223 | ldrb r7, [r11, #16] @ ??hh??ww\r |
| 224 | \r |
| 225 | mov r6, r1 @ hcache\r |
| 226 | orr r9, r2, r3, lsl #31 @ r9=maxcells|(sh<<31)\r |
| 227 | \r |
| 228 | mov r1, r7, lsl #4\r |
| 229 | orr r1, r1, #0x00ff\r |
| 230 | \r |
| 231 | and r10, r7, #3\r |
| 232 | cmp r10, #1\r |
| 233 | biclt r1, r1, #0xfc00\r |
| 234 | biceq r1, r1, #0xfe00\r |
| 235 | bicgt r1, r1, #0xff00 @ r1=ymask=(height<<8)|0xff; ...; // Y Mask in pixels\r |
| 236 | \r |
| 237 | add r10, r10, #5\r |
| 238 | cmp r10, #7\r |
| 239 | subge r10, r10, #1 @ r10=shift[width] (5,6,6,7)\r |
| 240 | \r |
| 241 | @ calculate xmask:\r |
| 242 | mov r5, r8, lsl r10\r |
| 243 | sub r5, r5, #1 @ r5=xmask\r |
| 244 | \r |
| 245 | @ Find name table:\r |
| 246 | tst r0, r0\r |
| 247 | ldreqb r12, [r11, #2]\r |
| 248 | ldrneb r12, [r11, #4]\r |
| 249 | \r |
| 250 | ldr r2, =Scanline @ trying to make good use of pipeline here\r |
| 251 | ldr lr, =(Pico+0x10000) @ lr=Pico.vram\r |
| 252 | \r |
| 253 | moveq r12, r12, lsl #10\r |
| 254 | movne r12, r12, lsl #13\r |
| 255 | and r12, r12, #(7<<13) @ r12=(ts->nametab<<1) (halfword compliant)\r |
| 256 | \r |
| 257 | ldrh r8, [r11, #12]\r |
| 258 | ldrb r7, [r11, #11]\r |
| 259 | ldr r2, [r2]\r |
| 260 | \r |
| 261 | mov r4, r8, lsr #8 @ pvid->reg[13]\r |
| 262 | mov r4, r4, lsl #10 @ htab=pvid->reg[13]<<9; (halfwords)\r |
| 263 | tst r7, #2\r |
| 264 | addne r4, r4, r2, lsl #2 @ htab+=Scanline<<1; // Offset by line\r |
| 265 | tst r7, #1\r |
| 266 | biceq r4, r4, #0x1f @ htab&=~0xf; // Offset by tile\r |
| 267 | add r4, r4, r0, lsl #1 @ htab+=plane\r |
| 268 | bic r4, r4, #0x00ff0000 @ just in case\r |
| 269 | ldrh r3, [lr, r4] @ r3=hscroll\r |
| 270 | \r |
| 271 | tst r7, #4\r |
| 272 | bne .DrawStrip_vsscroll\r |
| 273 | \r |
| 274 | @ Get vertical scroll value:\r |
| 275 | add r7, lr, #0x012000\r |
| 276 | add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)\r |
| 277 | ldr r7, [r7]\r |
| 278 | \r |
| 279 | tst r8, #2\r |
| 280 | tstne r8, #4\r |
| 281 | bne .DrawStrip_interlace\r |
| 282 | \r |
| 283 | tst r0, r0\r |
| 284 | movne r7, r7, lsr #16\r |
| 285 | \r |
| 286 | @ Find the line in the name table\r |
| 287 | add r2, r2, r7\r |
| 288 | and r2, r2, r1\r |
| 289 | mov r4, r2, lsr #3\r |
| 290 | add r10, r10, #1 @ shift[width]++\r |
| 291 | add r12, r12, r4, lsl r10 @ nametab+=(ts.line>>3)<<shift[width];\r |
| 292 | \r |
| 293 | @ ldmia r0, {r1,r2,r3,r5,r6,r9} @ r2=line, r3=ts->hscroll, r5=ts->xmask, r6=ts->hc, r9=ts->cells\r |
| 294 | @ mov r12,r1, lsl #1 @ r12=(ts->nametab<<1) (halfword compliant)\r |
| 295 | \r |
| 296 | and r10,r2, #7\r |
| 297 | mov r10,r10, lsl #1 @ r10=ty=(ts->line&7)<<1;\r |
| 298 | orr r10,r10, r9, lsl #24\r |
| 299 | \r |
| 300 | rsb r8, r3, #0\r |
| 301 | mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3\r |
| 302 | \r |
| 303 | sub r1, r3, #1\r |
| 304 | and r1, r1, #7\r |
| 305 | add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1\r |
| 306 | \r |
| 307 | tst r9, #1<<31\r |
| 308 | mov r3, #0\r |
| 309 | orrne r10,r10, #1<<23 @ r10=(cells<<24|sh<<23|hi_not_empty<<22|ty)\r |
| 310 | movne r3, #0x40 @ default to shadowed pal on sh mode\r |
| 311 | \r |
| 312 | mvn r9, #0 @ r9=prevcode=-1\r |
| 313 | \r |
| 314 | cmp r7, #8\r |
| 315 | addne r10,r10, #0x01000000 @ we will loop cells+1 times if there is scroll\r |
| 316 | \r |
| 317 | @ cache some stuff to avoid mem access\r |
| 318 | ldr r11,=HighCol\r |
| 319 | mov r0, #0xf\r |
| 320 | add r1, r11, r7 @ r1=pdest\r |
| 321 | \r |
| 322 | \r |
| 323 | @ r4 & r7 are scratch in this loop\r |
| 324 | .dsloop_subr1:\r |
| 325 | sub r1, r1, #8\r |
| 326 | .dsloop: @ 40-41 times\r |
| 327 | subs r10,r10, #0x01000000\r |
| 328 | bmi .dsloop_exit\r |
| 329 | \r |
| 330 | .dsloop_enter:\r |
| 331 | and r7, r5, r8\r |
| 332 | add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)\r |
| 333 | ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)\r |
| 334 | \r |
| 335 | add r1, r1, #8\r |
| 336 | add r8, r8, #1\r |
| 337 | \r |
| 338 | tst r7, #0x8000\r |
| 339 | bne .DrawStrip_hiprio\r |
| 340 | \r |
| 341 | cmp r7, r9\r |
| 342 | beq .DrawStrip_samecode @ we know stuff about this tile already\r |
| 343 | \r |
| 344 | mov r9, r7 @ remember code\r |
| 345 | \r |
| 346 | movs r2, r9, lsl #20 @ if (code&0x1000)\r |
| 347 | mov r2, r2, lsl #1\r |
| 348 | add r2, r2, r10, lsl #17\r |
| 349 | mov r2, r2, lsr #17\r |
| 350 | eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;\r |
| 351 | \r |
| 352 | ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 353 | \r |
| 354 | bic r7, r3, #0x3f\r |
| 355 | and r3, r9, #0x6000\r |
| 356 | add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 357 | \r |
| 358 | .DrawStrip_samecode:\r |
| 359 | tst r2, r2\r |
| 360 | beq .dsloop @ tileline blank\r |
| 361 | \r |
| 362 | cmp r2, r2, ror #4\r |
| 363 | beq .DrawStrip_SingleColor @ tileline singlecolor \r |
| 364 | \r |
| 365 | tst r9, #0x0800\r |
| 366 | beq .DrawStrip_TileNorm\r |
| 367 | \r |
| 368 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern\r |
| 369 | TileFlip r0\r |
| 370 | b .dsloop\r |
| 371 | \r |
| 372 | .DrawStrip_TileNorm:\r |
| 373 | TileNorm r0\r |
| 374 | b .dsloop\r |
| 375 | \r |
| 376 | .DrawStrip_SingleColor:\r |
| 377 | and r4, r2, #0xf\r |
| 378 | orr r4, r3, r4\r |
| 379 | orr r4, r4, r4, lsl #8\r |
| 380 | tst r1, #1 @ not aligned?\r |
| 381 | strneb r4, [r1], #1\r |
| 382 | streqh r4, [r1], #2\r |
| 383 | strh r4, [r1], #2\r |
| 384 | strh r4, [r1], #2\r |
| 385 | strh r4, [r1], #2\r |
| 386 | strneb r4, [r1], #1 @ have a remaining unaligned pixel?\r |
| 387 | b .dsloop_subr1\r |
| 388 | \r |
| 389 | .DrawStrip_hiprio:\r |
| 390 | tst r10, #0x00c00000\r |
| 391 | beq .DrawStrip_hiprio_maybempt\r |
| 392 | sub r0, r1, r11\r |
| 393 | orr r7, r7, r0, lsl #16\r |
| 394 | orr r7, r7, r10, lsl #25 @ (ty<<25)\r |
| 395 | tst r7, #0x1000\r |
| 396 | eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;\r |
| 397 | str r7, [r6], #4 @ cache hi priority tile\r |
| 398 | mov r0, #0xf\r |
| 399 | b .dsloop\r |
| 400 | \r |
| 401 | .DrawStrip_hiprio_maybempt:\r |
| 402 | cmp r7, r9\r |
| 403 | beq .dsloop @ must've been empty, otherwise we wouldn't get here\r |
| 404 | movs r2, r7, lsl #20 @ if (code&0x1000)\r |
| 405 | mov r2, r2, lsl #1\r |
| 406 | add r2, r2, r10, lsl #17\r |
| 407 | mov r2, r2, lsr #17\r |
| 408 | eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;\r |
| 409 | ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 410 | mov r9, r7 @ remember code\r |
| 411 | tst r2, r2\r |
| 412 | orrne r10, r10, #1<<22\r |
| 413 | bne .DrawStrip_hiprio\r |
| 414 | b .dsloop\r |
| 415 | \r |
| 416 | .dsloop_exit:\r |
| 417 | mov r0, #0\r |
| 418 | str r0, [r6] @ terminate the cache list\r |
| 419 | \r |
| 420 | ldmfd sp!, {r4-r11,lr}\r |
| 421 | bx lr\r |
| 422 | \r |
| 423 | \r |
| 424 | .DrawStrip_vsscroll:\r |
| 425 | @ shit, we have 2-cell column based vscroll\r |
| 426 | @ let the c code handle this (for now)\r |
| 427 | \r |
| 428 | @ int nametab; // 0x00\r |
| 429 | @ int line; // 0x04\r |
| 430 | @ int hscroll; // 0x08\r |
| 431 | @ int xmask; // 0x0C\r |
| 432 | @ int *hc; // 0x10 (pointer to cache buffer)\r |
| 433 | @ int cells; // 0x14\r |
| 434 | \r |
| 435 | sub sp, sp, #6*4\r |
| 436 | orr r2, r1, r10, lsl #24 @ ts.line=ymask|(shift[width]<<24); // save some stuff instead of line\r |
| 437 | mov r1, r0 @ plane\r |
| 438 | mov r0, r12, lsr #1 @ halfwords\r |
| 439 | and r9, r9, #0xff\r |
| 440 | stmia sp, {r0,r2,r3,r5,r6,r9}\r |
| 441 | \r |
| 442 | mov r0, sp\r |
| 443 | bl DrawStripVSRam @ struct TileStrip *ts, int plane\r |
| 444 | \r |
| 445 | add sp, sp, #6*4\r |
| 446 | ldmfd sp!, {r4-r11,lr}\r |
| 447 | bx lr\r |
| 448 | \r |
| 449 | @ interlace mode 2? Sonic 2?\r |
| 450 | .DrawStrip_interlace:\r |
| 451 | tst r0, r0\r |
| 452 | moveq r7, r7, lsl #21\r |
| 453 | movne r7, r7, lsl #5\r |
| 454 | \r |
| 455 | @ Find the line in the name table\r |
| 456 | add r2, r7, r2, lsl #22 @ r2=(vscroll+(Scanline<<1))<<21 (11 bits);\r |
| 457 | orr r1, r1, #0x80000000\r |
| 458 | and r2, r2, r1, ror #10 @ &((ymask<<1)|1)<<21;\r |
| 459 | mov r2, r2, lsr #21\r |
| 460 | mov r4, r2, lsr #4\r |
| 461 | mov r12, r12, lsr #1 @ halfwords\r |
| 462 | add r0, r12, r4, lsl r10 @ nametab+=(ts.line>>4)<<shift[width];\r |
| 463 | and r9, r9, #0xff\r |
| 464 | \r |
| 465 | sub sp, sp, #6*4\r |
| 466 | stmia sp, {r0,r2,r3,r5,r6,r9}\r |
| 467 | \r |
| 468 | mov r0, sp\r |
| 469 | bl DrawStripInterlace @ struct TileStrip *ts\r |
| 470 | \r |
| 471 | add sp, sp, #6*4\r |
| 472 | ldmfd sp!, {r4-r11,lr}\r |
| 473 | bx lr\r |
| 474 | \r |
| 475 | .pool\r |
| 476 | \r |
| 477 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 478 | \r |
| 479 | \r |
| 480 | .global BackFill @ int reg7, int sh\r |
| 481 | \r |
| 482 | BackFill:\r |
| 483 | stmfd sp!, {r4-r9,lr}\r |
| 484 | \r |
| 485 | ldr lr, =(HighCol+8)\r |
| 486 | \r |
| 487 | mov r0, r0, lsl #26\r |
| 488 | mov r0, r0, lsr #26\r |
| 489 | orr r0, r0, r1, lsl #6\r |
| 490 | orr r0, r0, r0, lsl #8\r |
| 491 | orr r0, r0, r0, lsl #16\r |
| 492 | \r |
| 493 | mov r1, r0\r |
| 494 | mov r2, r0\r |
| 495 | mov r3, r0\r |
| 496 | mov r4, r0\r |
| 497 | mov r5, r0\r |
| 498 | mov r6, r0\r |
| 499 | mov r7, r0\r |
| 500 | \r |
| 501 | @ go go go!\r |
| 502 | stmia lr!, {r0-r7} @ 10*8*4\r |
| 503 | stmia lr!, {r0-r7}\r |
| 504 | stmia lr!, {r0-r7}\r |
| 505 | stmia lr!, {r0-r7}\r |
| 506 | stmia lr!, {r0-r7}\r |
| 507 | stmia lr!, {r0-r7}\r |
| 508 | stmia lr!, {r0-r7}\r |
| 509 | stmia lr!, {r0-r7}\r |
| 510 | stmia lr!, {r0-r7}\r |
| 511 | stmia lr!, {r0-r7}\r |
| 512 | \r |
| 513 | ldmfd sp!, {r4-r9,r12}\r |
| 514 | bx r12\r |
| 515 | \r |
| 516 | \r |
| 517 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 518 | \r |
| 519 | \r |
| 520 | .global DrawTilesFromCache @ int *hc, int sh\r |
| 521 | \r |
| 522 | DrawTilesFromCache:\r |
| 523 | stmfd sp!, {r4-r8,r11,lr}\r |
| 524 | \r |
| 525 | mvn r5, #0 @ r5=prevcode=-1\r |
| 526 | mov r8, r1\r |
| 527 | \r |
| 528 | @ cache some stuff to avoid mem access\r |
| 529 | ldr r11,=HighCol\r |
| 530 | ldr lr, =(Pico+0x10000) @ lr=Pico.vram\r |
| 531 | mov r12,#0xf\r |
| 532 | \r |
| 533 | @ scratch: r4, r7\r |
| 534 | .dtfc_loop:\r |
| 535 | ldr r6, [r0], #4 @ read code\r |
| 536 | movs r1, r6, lsr #16 @ r1=dx;\r |
| 537 | ldmeqfd sp!, {r4-r8,r11,pc} @ dx is never zero, this must be a terminator, return\r |
| 538 | bic r1, r1, #0xfe00\r |
| 539 | add r1, r11, r1 @ r1=pdest\r |
| 540 | \r |
| 541 | mov r7, r6, lsl #16\r |
| 542 | cmp r5, r7, lsr #16\r |
| 543 | beq .dtfc_samecode @ if (code==prevcode)\r |
| 544 | \r |
| 545 | mov r5, r7, lsr #16\r |
| 546 | \r |
| 547 | mov r2, r5, lsl #21\r |
| 548 | mov r2, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4;\r |
| 549 | add r2, r2, r6, lsr #25 @ addr+=ty\r |
| 550 | \r |
| 551 | and r3, r5, #0x6000\r |
| 552 | mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 553 | \r |
| 554 | ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 555 | \r |
| 556 | .dtfc_samecode:\r |
| 557 | tst r8, r8\r |
| 558 | bne .dtfc_shadow\r |
| 559 | \r |
| 560 | tst r2, r2\r |
| 561 | beq .dtfc_loop\r |
| 562 | \r |
| 563 | cmp r2, r2, ror #4\r |
| 564 | beq .dtfc_SingleColor @ tileline singlecolor \r |
| 565 | \r |
| 566 | tst r5, #0x0800\r |
| 567 | beq .dtfc_TileNorm\r |
| 568 | \r |
| 569 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 570 | TileFlip r12\r |
| 571 | b .dtfc_loop\r |
| 572 | \r |
| 573 | .dtfc_TileNorm:\r |
| 574 | TileNorm r12\r |
| 575 | b .dtfc_loop\r |
| 576 | \r |
| 577 | .dtfc_SingleColor:\r |
| 578 | and r4, r2, #0xf\r |
| 579 | orr r4, r3, r4\r |
| 580 | orr r4, r4, r4, lsl #8\r |
| 581 | tst r1, #1 @ not aligned?\r |
| 582 | strneb r4, [r1], #1\r |
| 583 | streqh r4, [r1], #2\r |
| 584 | strh r4, [r1], #2\r |
| 585 | strh r4, [r1], #2\r |
| 586 | strh r4, [r1], #2\r |
| 587 | strneb r4, [r1], #1 @ have a remaining unaligned pixel?\r |
| 588 | b .dtfc_loop\r |
| 589 | \r |
| 590 | .dtfc_shadow:\r |
| 591 | tst r2, r2\r |
| 592 | beq .dtfc_shadow_blank\r |
| 593 | \r |
| 594 | cmp r2, r2, ror #4\r |
| 595 | beq .dtfc_SingleColor @ tileline singlecolor \r |
| 596 | \r |
| 597 | tst r5, #0x0800\r |
| 598 | beq .dtfc_TileNormShHP\r |
| 599 | \r |
| 600 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 601 | TileFlipShHP\r |
| 602 | b .dtfc_loop\r |
| 603 | \r |
| 604 | .dtfc_TileNormShHP:\r |
| 605 | TileNormShHP\r |
| 606 | b .dtfc_loop\r |
| 607 | \r |
| 608 | .dtfc_shadow_blank:\r |
| 609 | ldrb r4, [r1] @ 1ci\r |
| 610 | ldrb r12,[r1,#1]\r |
| 611 | tst r4, #0x80\r |
| 612 | andeq r4, r4,#0x3f\r |
| 613 | streqb r4, [r1]\r |
| 614 | tst r12,#0x80\r |
| 615 | ldrb r4, [r1,#2]\r |
| 616 | andeq r12,r12,#0x3f\r |
| 617 | streqb r12,[r1,#1]\r |
| 618 | tst r4, #0x80\r |
| 619 | ldrb r12,[r1,#3]\r |
| 620 | andeq r4, r4,#0x3f\r |
| 621 | streqb r4, [r1,#2]\r |
| 622 | tst r12,#0x80\r |
| 623 | ldrb r4, [r1,#4]\r |
| 624 | andeq r12,r12,#0x3f\r |
| 625 | streqb r12,[r1,#3]\r |
| 626 | tst r4, #0x80\r |
| 627 | ldrb r12,[r1,#5]\r |
| 628 | andeq r4, r4,#0x3f\r |
| 629 | streqb r4, [r1,#4]\r |
| 630 | tst r12,#0x80\r |
| 631 | ldrb r4, [r1,#6]\r |
| 632 | andeq r12,r12,#0x3f\r |
| 633 | streqb r12,[r1,#5]\r |
| 634 | tst r4, #0x80\r |
| 635 | ldrb r12,[r1,#7]\r |
| 636 | andeq r4, r4,#0x3f\r |
| 637 | streqb r4, [r1,#6]\r |
| 638 | tst r12,#0x80\r |
| 639 | andeq r12,r12,#0x3f\r |
| 640 | streqb r12,[r1,#7]\r |
| 641 | mov r12, #0xf\r |
| 642 | b .dtfc_loop\r |
| 643 | \r |
| 644 | .pool\r |
| 645 | \r |
| 646 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 647 | \r |
| 648 | \r |
| 649 | .global DrawSpritesFromCache @ int *hc, int sh\r |
| 650 | \r |
| 651 | DrawSpritesFromCache:\r |
| 652 | stmfd sp!, {r4-r11,lr}\r |
| 653 | \r |
| 654 | @ cache some stuff to avoid mem access\r |
| 655 | ldr r11,=HighCol\r |
| 656 | ldr lr, =(Pico+0x10000) @ lr=Pico.vram\r |
| 657 | mov r6, r1, lsl #31\r |
| 658 | orr r6, r6, #1<<30\r |
| 659 | mov r12,#0xf\r |
| 660 | \r |
| 661 | mov r10, r0\r |
| 662 | \r |
| 663 | .dsfc_loop:\r |
| 664 | ldr r9, [r10], #4 @ read code\r |
| 665 | bic r6, r6, #7 @ using pipeline\r |
| 666 | tst r9, r9\r |
| 667 | ldmeqfd sp!, {r4-r11,pc}\r |
| 668 | \r |
| 669 | mov r4, r9, lsl #28\r |
| 670 | orr r6, r6, r4, lsr #30\r |
| 671 | add r6, r6, #1 @ r6=s1cc???? ... ?????www (s=shadow/hilight, cc=pal, w=width)\r |
| 672 | \r |
| 673 | and r5, r9, #3\r |
| 674 | add r5, r5, #1 @ r5=delta\r |
| 675 | tst r9, #0x10000\r |
| 676 | rsbne r5, r5, #0 @ Flip X\r |
| 677 | mov r5, r5, lsl #4\r |
| 678 | \r |
| 679 | mov r2, r9, lsr #17\r |
| 680 | mov r8, r2, lsl #1 @ tile=((unsigned int)code>>17)<<1;\r |
| 681 | \r |
| 682 | and r3, r9, #0x30 @ r3=pal=(code&0x30);\r |
| 683 | \r |
| 684 | bic r6, r6, #3<<28\r |
| 685 | orr r6, r6, r3, lsl #24\r |
| 686 | \r |
| 687 | mov r0, r9, lsl #16\r |
| 688 | mov r0, r0, asr #22 @ sx=(code<<16)>>22\r |
| 689 | adds r0, r0, #0 @ set ZV\r |
| 690 | b .dsfc_inloop_enter\r |
| 691 | \r |
| 692 | @ scratch: r4, r7\r |
| 693 | .dsfc_inloop:\r |
| 694 | sub r6, r6, #1\r |
| 695 | tst r6, #7\r |
| 696 | beq .dsfc_loop\r |
| 697 | adds r0, r0, #8\r |
| 698 | add r8, r8, r5\r |
| 699 | \r |
| 700 | .dsfc_inloop_enter:\r |
| 701 | ble .dsfc_inloop\r |
| 702 | cmp r0, #328\r |
| 703 | bge .dsfc_loop\r |
| 704 | \r |
| 705 | mov r8, r8, lsl #17\r |
| 706 | mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address\r |
| 707 | \r |
| 708 | ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+tile); // Get 8 pixels\r |
| 709 | add r1, r11, r0 @ r1=pdest\r |
| 710 | tst r2, r2\r |
| 711 | beq .dsfc_inloop\r |
| 712 | \r |
| 713 | cmp r12, r6, lsr #28\r |
| 714 | beq .dsfc_shadow\r |
| 715 | \r |
| 716 | cmp r2, r2, ror #4\r |
| 717 | beq .dsfc_SingleColor @ tileline singlecolor \r |
| 718 | \r |
| 719 | tst r9, #0x10000\r |
| 720 | beq .dsfc_TileNorm\r |
| 721 | \r |
| 722 | @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 723 | TileFlip r12\r |
| 724 | b .dsfc_inloop\r |
| 725 | \r |
| 726 | .dsfc_TileNorm:\r |
| 727 | TileNorm r12\r |
| 728 | b .dsfc_inloop\r |
| 729 | \r |
| 730 | .dsfc_SingleColor:\r |
| 731 | tst r0, #1 @ not aligned?\r |
| 732 | and r4, r2, #0xf\r |
| 733 | orr r4, r3, r4\r |
| 734 | orr r4, r4, r4, lsl #8\r |
| 735 | strneb r4, [r1], #1\r |
| 736 | streqh r4, [r1], #2\r |
| 737 | strh r4, [r1], #2\r |
| 738 | strh r4, [r1], #2\r |
| 739 | strh r4, [r1], #2\r |
| 740 | strneb r4, [r1], #1\r |
| 741 | b .dsfc_inloop\r |
| 742 | \r |
| 743 | .dsfc_shadow:\r |
| 744 | cmp r2, r2, ror #4\r |
| 745 | beq .dsfc_singlec_sh\r |
| 746 | \r |
| 747 | tst r9, #0x10000\r |
| 748 | beq .dsfc_TileNorm_sh\r |
| 749 | \r |
| 750 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 751 | TileFlipSh\r |
| 752 | b .dsfc_inloop\r |
| 753 | \r |
| 754 | .dsfc_TileNorm_sh:\r |
| 755 | TileNormSh\r |
| 756 | b .dsfc_inloop\r |
| 757 | \r |
| 758 | .dsfc_singlec_sh:\r |
| 759 | cmp r2, #0xe0000000\r |
| 760 | bcc .dsfc_SingleColor @ normal singlecolor tileline (carry inverted in ARM)\r |
| 761 | tst r2, #0x10000000\r |
| 762 | bne .dsfc_sh_sh\r |
| 763 | TileSingleHi\r |
| 764 | b .dsfc_inloop\r |
| 765 | \r |
| 766 | .dsfc_sh_sh:\r |
| 767 | TileSingleSh\r |
| 768 | b .dsfc_inloop\r |
| 769 | \r |
| 770 | .pool\r |
| 771 | \r |
| 772 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 773 | \r |
| 774 | @ + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r |
| 775 | @ + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r |
| 776 | \r |
| 777 | .global DrawSprite @ unsigned int *sprite, int **hc, int sh\r |
| 778 | \r |
| 779 | DrawSprite:\r |
| 780 | stmfd sp!, {r4-r9,r11,lr}\r |
| 781 | \r |
| 782 | ldr r3, [r0] @ sprite[0]\r |
| 783 | ldr r7, =Scanline\r |
| 784 | mov r6, r3, lsr #28\r |
| 785 | sub r6, r6, #1 @ r6=width-1 (inc later)\r |
| 786 | mov r5, r3, lsr #24\r |
| 787 | and r5, r5, #7 @ r5=height\r |
| 788 | \r |
| 789 | mov r4, r3, lsl #16 @ r4=sy<<16 (tmp)\r |
| 790 | \r |
| 791 | ldr r7, [r7]\r |
| 792 | ldr r9, [r0, #4]\r |
| 793 | sub r7, r7, r4, asr #16 @ r7=row=Scanline-sy\r |
| 794 | \r |
| 795 | tst r2, r2\r |
| 796 | mov r2, r9, asr #16 @ r2=sx\r |
| 797 | bic r9, r9, #0xfe000000\r |
| 798 | orrne r9, r9, #1<<31 @ r9=code|(sh<<31)\r |
| 799 | \r |
| 800 | tst r9, #0x1000\r |
| 801 | movne r4, r5, lsl #3\r |
| 802 | subne r4, r4, #1\r |
| 803 | subne r7, r4, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r |
| 804 | \r |
| 805 | mov r8, r9, lsl #21\r |
| 806 | mov r8, r8, lsr #21\r |
| 807 | add r8, r8, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down\r |
| 808 | \r |
| 809 | tst r9, #0x0800\r |
| 810 | mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);\r |
| 811 | rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now\r |
| 812 | \r |
| 813 | mov r8, r8, lsl #4\r |
| 814 | and r7, r7, #7\r |
| 815 | add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address\r |
| 816 | \r |
| 817 | tst r9, #0x8000\r |
| 818 | bne .dspr_cache @ if(code&0x8000) // high priority - cache it\r |
| 819 | \r |
| 820 | @ cache some stuff to avoid mem access\r |
| 821 | ldr r11,=HighCol\r |
| 822 | ldr lr, =(Pico+0x10000) @ lr=Pico.vram\r |
| 823 | mov r12,#0xf\r |
| 824 | \r |
| 825 | mov r5, r5, lsl #4 @ delta<<=4; // Delta of address\r |
| 826 | and r4, r9, #0x6000\r |
| 827 | orr r9, r9, r4, lsl #16\r |
| 828 | orr r9, r9, #0x10000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)\r |
| 829 | \r |
| 830 | tst r9, #1<<31\r |
| 831 | mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);\r |
| 832 | orrne r3, r3, #0x40 @ shadow by default\r |
| 833 | \r |
| 834 | add r6, r6, #1 @ inc now\r |
| 835 | adds r0, r2, #0 @ mov sx to r0 and set ZV flags\r |
| 836 | b .dspr_loop_enter\r |
| 837 | \r |
| 838 | .dspr_loop:\r |
| 839 | subs r6, r6, #1 @ width--\r |
| 840 | ldmeqfd sp!, {r4-r9,r11,pc}@ return\r |
| 841 | adds r0, r0, #8 @ sx+=8\r |
| 842 | add r8, r8, r5 @ tile+=delta\r |
| 843 | \r |
| 844 | .dspr_loop_enter:\r |
| 845 | ble .dspr_loop @ sx <= 0\r |
| 846 | cmp r0, #328\r |
| 847 | ldmgefd sp!, {r4-r9,r11,pc}@ return\r |
| 848 | \r |
| 849 | mov r8, r8, lsl #17\r |
| 850 | mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address\r |
| 851 | \r |
| 852 | ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 853 | add r1, r11, r0 @ r1=pdest\r |
| 854 | tst r2, r2\r |
| 855 | beq .dspr_loop\r |
| 856 | \r |
| 857 | cmp r12, r9, lsr #28\r |
| 858 | beq .dspr_shadow\r |
| 859 | \r |
| 860 | cmp r2, r2, ror #4\r |
| 861 | beq .dspr_SingleColor @ tileline singlecolor \r |
| 862 | \r |
| 863 | tst r9, #0x0800\r |
| 864 | beq .dspr_TileNorm\r |
| 865 | \r |
| 866 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 867 | TileFlip r12\r |
| 868 | b .dspr_loop\r |
| 869 | \r |
| 870 | @ scratch: r4, r7\r |
| 871 | .dspr_TileNorm:\r |
| 872 | TileNorm r12\r |
| 873 | b .dspr_loop\r |
| 874 | \r |
| 875 | .dspr_SingleColor:\r |
| 876 | and r4, r2, #0xf\r |
| 877 | orr r4, r3, r4\r |
| 878 | orr r4, r4, r4, lsl #8\r |
| 879 | tst r0, #1 @ not aligned?\r |
| 880 | strneb r4, [r1], #1\r |
| 881 | streqh r4, [r1], #2\r |
| 882 | strh r4, [r1], #2\r |
| 883 | strh r4, [r1], #2\r |
| 884 | strh r4, [r1], #2\r |
| 885 | strneb r4, [r1], #1\r |
| 886 | b .dspr_loop\r |
| 887 | \r |
| 888 | .dspr_shadow:\r |
| 889 | cmp r2, r2, ror #4\r |
| 890 | beq .dspr_singlec_sh\r |
| 891 | \r |
| 892 | tst r9, #0x0800\r |
| 893 | beq .dspr_TileNorm_sh\r |
| 894 | \r |
| 895 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern\r |
| 896 | TileFlipSh\r |
| 897 | b .dspr_loop\r |
| 898 | \r |
| 899 | .dspr_TileNorm_sh:\r |
| 900 | TileNormSh\r |
| 901 | b .dspr_loop\r |
| 902 | \r |
| 903 | .dspr_singlec_sh:\r |
| 904 | cmp r2, #0xe0000000\r |
| 905 | bcc .dspr_SingleColor @ normal tileline\r |
| 906 | tst r2, #0x10000000\r |
| 907 | bne .dspr_sh_sh\r |
| 908 | TileSingleHi\r |
| 909 | b .dspr_loop\r |
| 910 | \r |
| 911 | .dspr_sh_sh:\r |
| 912 | TileSingleSh\r |
| 913 | b .dspr_loop\r |
| 914 | \r |
| 915 | \r |
| 916 | .dspr_cache:\r |
| 917 | @ *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);\r |
| 918 | mov r4, r8, lsl #16 @ tile\r |
| 919 | tst r9, #0x0800\r |
| 920 | orrne r4, r4, #0x10000 @ code&0x0800\r |
| 921 | mov r2, r2, lsl #22\r |
| 922 | orr r4, r4, r2, lsr #16 @ (sx<<6)&0x0000ffc0\r |
| 923 | and r2, r9, #0x6000\r |
| 924 | orr r4, r4, r2, lsr #9 @ (code>>9)&0x30\r |
| 925 | mov r3, r3, lsl #12\r |
| 926 | ldr r2, [r1]\r |
| 927 | orr r4, r4, r3, lsr #28 @ (sprite[0]>>24)&0xf\r |
| 928 | \r |
| 929 | str r4, [r2], #4\r |
| 930 | str r2, [r1]\r |
| 931 | \r |
| 932 | ldmfd sp!, {r4-r9,r11,lr}\r |
| 933 | bx lr\r |
| 934 | \r |
| 935 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 936 | \r |
| 937 | .global DrawWindow @ int tstart, int tend, int prio, int sh // int *hcache\r |
| 938 | \r |
| 939 | DrawWindow:\r |
| 940 | stmfd sp!, {r4-r11,lr}\r |
| 941 | \r |
| 942 | ldr r11, =(Pico+0x22228) @ Pico.video\r |
| 943 | ldr r10, =Scanline\r |
| 944 | ldrb r12, [r11, #3] @ pvid->reg[3]\r |
| 945 | \r |
| 946 | ldr r10, [r10]\r |
| 947 | ldr r4, [r11, #12]\r |
| 948 | mov r5, r10, lsr #3\r |
| 949 | and r10, r10, #7\r |
| 950 | mov r10, r10, lsl #1 @ r10=ty\r |
| 951 | \r |
| 952 | mov r12, r12, lsl #10\r |
| 953 | \r |
| 954 | tst r4, #1 @ 40 cell mode?\r |
| 955 | andne r12, r12, #0xf000 @ 0x3c<<10\r |
| 956 | andeq r12, r12, #0xf800\r |
| 957 | addne r12, r12, r5, lsl #7\r |
| 958 | addeq r12, r12, r5, lsl #6 @ nametab\r |
| 959 | add r12, r12, r0, lsl #2 @ +starttile\r |
| 960 | \r |
| 961 | ldr r6, =rendstatus\r |
| 962 | ldr lr, =(Pico+0x10000) @ lr=Pico.vram\r |
| 963 | ldrb r6, [r6]\r |
| 964 | \r |
| 965 | @ fetch the first code now\r |
| 966 | ldrh r7, [lr, r12]\r |
| 967 | \r |
| 968 | ands r6, r6, #2 @ we care about bit 1 only\r |
| 969 | orr r6, r6, r2\r |
| 970 | bne .dw_no_sameprio\r |
| 971 | \r |
| 972 | cmp r2, r7, lsr #15\r |
| 973 | ldmnefd sp!, {r4-r11,pc} @ assume that whole window uses same priority\r |
| 974 | \r |
| 975 | .dw_no_sameprio:\r |
| 976 | orr r6, r6, r3, lsl #8 @ shadow mode\r |
| 977 | \r |
| 978 | sub r8, r1, r0\r |
| 979 | mov r8, r8, lsl #1 @ cells\r |
| 980 | \r |
| 981 | mvn r9, #0 @ r9=prevcode=-1\r |
| 982 | \r |
| 983 | @ cache some stuff to avoid mem access\r |
| 984 | ldr r11,=(HighCol+8)\r |
| 985 | add r1, r11, r0, lsl #4 @ r1=pdest\r |
| 986 | mov r0, #0xf\r |
| 987 | b .dwloop_enter\r |
| 988 | \r |
| 989 | @ r4,r5 & r7 are scratch in this loop\r |
| 990 | .dwloop:\r |
| 991 | add r1, r1, #8\r |
| 992 | .dwloop_nor1:\r |
| 993 | add r12, r12, #2 @ halfwords\r |
| 994 | ldrh r7, [lr, r12] @ r7=code (int, but from unsigned, no sign extend)\r |
| 995 | subs r8, r8, #1\r |
| 996 | beq .dwloop_end @ done\r |
| 997 | \r |
| 998 | eor r5, r6, r7, lsr #15\r |
| 999 | tst r5, #1\r |
| 1000 | orrne r6, r6, #2 @ wrong pri\r |
| 1001 | bne .dwloop\r |
| 1002 | \r |
| 1003 | cmp r7, r9\r |
| 1004 | beq .dw_samecode @ we know stuff about this tile already\r |
| 1005 | \r |
| 1006 | .dwloop_enter:\r |
| 1007 | mov r9, r7 @ remember code\r |
| 1008 | \r |
| 1009 | movs r2, r9, lsl #20 @ if (code&0x1000)\r |
| 1010 | mov r2, r2, lsl #1\r |
| 1011 | add r2, r10, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4; addr+=ty\r |
| 1012 | eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;\r |
| 1013 | \r |
| 1014 | and r3, r9, #0x6000\r |
| 1015 | mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 1016 | \r |
| 1017 | ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 1018 | \r |
| 1019 | .dw_samecode:\r |
| 1020 | tst r6, #0x100\r |
| 1021 | bne .dw_shadow\r |
| 1022 | .dw_shadow_done:\r |
| 1023 | tst r2, r2\r |
| 1024 | beq .dwloop @ tileline blank\r |
| 1025 | \r |
| 1026 | cmp r2, r2, ror #4\r |
| 1027 | beq .dw_SingleColor @ tileline singlecolor \r |
| 1028 | \r |
| 1029 | tst r9, #0x0800\r |
| 1030 | beq .dw_TileNorm\r |
| 1031 | \r |
| 1032 | @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern\r |
| 1033 | TileFlip r0\r |
| 1034 | b .dwloop\r |
| 1035 | \r |
| 1036 | .dw_TileNorm:\r |
| 1037 | TileNorm r0\r |
| 1038 | b .dwloop\r |
| 1039 | \r |
| 1040 | .dw_SingleColor:\r |
| 1041 | and r4, r0, r2 @ #0x0000000f\r |
| 1042 | orr r4, r3, r4\r |
| 1043 | orr r4, r4, r4, lsl #8\r |
| 1044 | orr r4, r4, r4, lsl #16\r |
| 1045 | mov r5, r4\r |
| 1046 | stmia r1!, {r4,r5}\r |
| 1047 | b .dwloop_nor1 @ we incremeted r1 ourselves\r |
| 1048 | \r |
| 1049 | .dw_shadow:\r |
| 1050 | tst r6, #1 @ hi pri?\r |
| 1051 | orreq r3, r3, #0x40\r |
| 1052 | beq .dw_shadow_done\r |
| 1053 | ldr r4, [r1]\r |
| 1054 | tst r4, #0x00000080\r |
| 1055 | biceq r4, r4, #0x000000c0\r |
| 1056 | tst r4, #0x00008000\r |
| 1057 | biceq r4, r4, #0x0000c000\r |
| 1058 | tst r4, #0x00800000\r |
| 1059 | biceq r4, r4, #0x00c00000\r |
| 1060 | tst r4, #0x80000000\r |
| 1061 | biceq r4, r4, #0xc0000000\r |
| 1062 | str r4, [r1]\r |
| 1063 | ldr r4, [r1,#4]\r |
| 1064 | tst r4, #0x00000080\r |
| 1065 | biceq r4, r4, #0x000000c0\r |
| 1066 | tst r4, #0x00008000\r |
| 1067 | biceq r4, r4, #0x0000c000\r |
| 1068 | tst r4, #0x00800000\r |
| 1069 | biceq r4, r4, #0x00c00000\r |
| 1070 | tst r4, #0x80000000\r |
| 1071 | biceq r4, r4, #0xc0000000\r |
| 1072 | str r4, [r1,#4]\r |
| 1073 | b .dw_shadow_done\r |
| 1074 | \r |
| 1075 | .dwloop_end:\r |
| 1076 | ldr r0, =rendstatus\r |
| 1077 | ldr r1, [r0]\r |
| 1078 | and r6, r6, #2\r |
| 1079 | orr r1, r1, r6\r |
| 1080 | str r1, [r0]\r |
| 1081 | \r |
| 1082 | ldmfd sp!, {r4-r11,r12}\r |
| 1083 | bx r12\r |
| 1084 | \r |
| 1085 | \r |
| 1086 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 1087 | \r |
| 1088 | \r |
| 1089 | @ hilights 2 pixels in RGB444/BGR444 format\r |
| 1090 | .macro TileDoShHi2Pixels444 reg\r |
| 1091 | mov \reg, \reg, ror #12\r |
| 1092 | adds \reg, \reg, #0x40000000\r |
| 1093 | orrcs \reg, \reg, #0xf0000000\r |
| 1094 | mov \reg, \reg, ror #28\r |
| 1095 | adds \reg, \reg, #0x40000000\r |
| 1096 | orrcs \reg, \reg, #0xf0000000\r |
| 1097 | mov \reg, \reg, ror #28\r |
| 1098 | adds \reg, \reg, #0x40000000\r |
| 1099 | orrcs \reg, \reg, #0xf0000000\r |
| 1100 | mov \reg, \reg, ror #24\r |
| 1101 | adds \reg, \reg, #0x40000000\r |
| 1102 | orrcs \reg, \reg, #0xf0000000\r |
| 1103 | mov \reg, \reg, ror #28\r |
| 1104 | adds \reg, \reg, #0x40000000\r |
| 1105 | orrcs \reg, \reg, #0xf0000000\r |
| 1106 | mov \reg, \reg, ror #28\r |
| 1107 | adds \reg, \reg, #0x40000000\r |
| 1108 | orrcs \reg, \reg, #0xf0000000\r |
| 1109 | mov \reg, \reg, ror #12\r |
| 1110 | .endm\r |
| 1111 | \r |
| 1112 | \r |
| 1113 | .global FinalizeLineBGR444 @ int sh\r |
| 1114 | \r |
| 1115 | FinalizeLineBGR444:\r |
| 1116 | stmfd sp!, {r4-r6,lr}\r |
| 1117 | mov r6, r0\r |
| 1118 | ldr lr, =(Pico+0x22228) @ Pico.video\r |
| 1119 | ldr r0, =DrawLineDest\r |
| 1120 | ldrb r12, [lr, #12]\r |
| 1121 | ldr r0, [r0]\r |
| 1122 | sub r3, lr, #0x128 @ r3=Pico.cram\r |
| 1123 | \r |
| 1124 | tst r12, #1\r |
| 1125 | movne r2, #320/4 @ len\r |
| 1126 | bne .fl_no32colBGR444\r |
| 1127 | ldr r4, =PicoOpt\r |
| 1128 | mov r2, #256/4\r |
| 1129 | ldr r4, [r4]\r |
| 1130 | tst r4, #0x100\r |
| 1131 | addeq r0, r0, #32*2\r |
| 1132 | \r |
| 1133 | .fl_no32colBGR444:\r |
| 1134 | tst r6, r6\r |
| 1135 | beq .fl_noshBGR444\r |
| 1136 | \r |
| 1137 | ldr r4, =HighPal\r |
| 1138 | \r |
| 1139 | ldrb r12, [lr, #-0x1a] @ 0x2220e ~ dirtyPal\r |
| 1140 | tst r12, r12\r |
| 1141 | moveq r3, r4\r |
| 1142 | beq .fl_noshBGR444\r |
| 1143 | mov r12, #0\r |
| 1144 | strb r12, [lr, #-0x1a]\r |
| 1145 | \r |
| 1146 | mov lr, #0x40/8\r |
| 1147 | @ copy pal:\r |
| 1148 | .fl_loopcpBGR444:\r |
| 1149 | ldmia r3!, {r1,r5,r6,r12}\r |
| 1150 | subs lr, lr, #1\r |
| 1151 | stmia r4!, {r1,r5,r6,r12}\r |
| 1152 | bne .fl_loopcpBGR444\r |
| 1153 | \r |
| 1154 | @ shadowed pixels:\r |
| 1155 | mov r12, #0x0077\r |
| 1156 | orr r12,r12,#0x0700\r |
| 1157 | orr r12,r12,r12,lsl #16\r |
| 1158 | sub r3, r3, #0x40*2\r |
| 1159 | add r5, r4, #0x80*2\r |
| 1160 | mov lr, #0x40/4\r |
| 1161 | .fl_loopcpBGR444_sh:\r |
| 1162 | ldmia r3!, {r1,r6}\r |
| 1163 | subs lr, lr, #1\r |
| 1164 | and r1, r12, r1, lsr #1\r |
| 1165 | and r6, r12, r6, lsr #1\r |
| 1166 | stmia r4!, {r1,r6}\r |
| 1167 | stmia r5!, {r1,r6}\r |
| 1168 | bne .fl_loopcpBGR444_sh\r |
| 1169 | \r |
| 1170 | @ hilighted pixels:\r |
| 1171 | sub r3, r3, #0x40*2\r |
| 1172 | mov lr, #0x40/2\r |
| 1173 | .fl_loopcpBGR444_hi:\r |
| 1174 | ldr r1, [r3], #4\r |
| 1175 | TileDoShHi2Pixels444 r1\r |
| 1176 | str r1, [r4], #4\r |
| 1177 | subs lr, lr, #1\r |
| 1178 | bne .fl_loopcpBGR444_hi\r |
| 1179 | \r |
| 1180 | sub r3, r4, #0x40*3*2\r |
| 1181 | \r |
| 1182 | \r |
| 1183 | .fl_noshBGR444:\r |
| 1184 | ldr r1, =(HighCol+8)\r |
| 1185 | mov lr, #0xff\r |
| 1186 | mov lr, lr, lsl #1\r |
| 1187 | \r |
| 1188 | .fl_loopBGR444:\r |
| 1189 | \r |
| 1190 | ldr r12, [r1], #4\r |
| 1191 | subs r2, r2, #1\r |
| 1192 | \r |
| 1193 | and r4, lr, r12, lsl #1\r |
| 1194 | ldrh r4, [r3, r4]\r |
| 1195 | and r5, lr, r12, lsr #7\r |
| 1196 | ldrh r5, [r3, r5]\r |
| 1197 | and r6, lr, r12, lsr #15\r |
| 1198 | ldrh r6, [r3, r6]\r |
| 1199 | orr r4, r4, r5, lsl #16\r |
| 1200 | \r |
| 1201 | and r5, lr, r12, lsr #23\r |
| 1202 | ldrh r5, [r3, r5] @ 2c.i.\r |
| 1203 | orr r5, r6, r5, lsl #16\r |
| 1204 | \r |
| 1205 | stmia r0!, {r4,r5}\r |
| 1206 | bne .fl_loopBGR444\r |
| 1207 | \r |
| 1208 | \r |
| 1209 | ldmfd sp!, {r4-r6,lr}\r |
| 1210 | bx lr\r |
| 1211 | \r |
| 1212 | \r |
| 1213 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 1214 | \r |
| 1215 | \r |
| 1216 | @ hilights 2 pixels in RGB555/BGR555 format\r |
| 1217 | .macro TileDoShHi2Pixels555 reg\r |
| 1218 | adds \reg, \reg, #0x40000000\r |
| 1219 | orrcs \reg, \reg, #0xf0000000\r |
| 1220 | mov \reg, \reg, ror #27\r |
| 1221 | adds \reg, \reg, #0x40000000\r |
| 1222 | orrcs \reg, \reg, #0xf0000000\r |
| 1223 | mov \reg, \reg, ror #26\r |
| 1224 | adds \reg, \reg, #0x40000000\r |
| 1225 | orrcs \reg, \reg, #0xf0000000\r |
| 1226 | mov \reg, \reg, ror #27\r |
| 1227 | adds \reg, \reg, #0x40000000\r |
| 1228 | orrcs \reg, \reg, #0xf0000000\r |
| 1229 | mov \reg, \reg, ror #27\r |
| 1230 | adds \reg, \reg, #0x40000000\r |
| 1231 | orrcs \reg, \reg, #0xf0000000\r |
| 1232 | mov \reg, \reg, ror #26\r |
| 1233 | adds \reg, \reg, #0x40000000\r |
| 1234 | orrcs \reg, \reg, #0xf0000000\r |
| 1235 | mov \reg, \reg, ror #27\r |
| 1236 | .endm\r |
| 1237 | \r |
| 1238 | \r |
| 1239 | @ Convert 0000bbb0 ggg0rrr0\r |
| 1240 | @ to rrrrrggg gggbbbbb\r |
| 1241 | \r |
| 1242 | @ r2,r3,r9 - scratch, lr = 0x001c001c, r8 = 0x00030003\r |
| 1243 | .macro convRGB565 reg\r |
| 1244 | and r2, lr, \reg,lsl #1\r |
| 1245 | and r9, r8, \reg,lsr #2\r |
| 1246 | orr r2, r2, r9 @ r2=red\r |
| 1247 | and r3, lr, \reg,lsr #7\r |
| 1248 | and r9, r8, \reg,lsr #10\r |
| 1249 | orr r3, r3, r9 @ r3=blue\r |
| 1250 | and \reg, \reg, lr, lsl #3\r |
| 1251 | orr \reg, \reg, \reg,lsl #3 @ green\r |
| 1252 | orr \reg, \reg, r2, lsl #11 @ add red back\r |
| 1253 | orr \reg, \reg, r3 @ add blue back\r |
| 1254 | .endm\r |
| 1255 | \r |
| 1256 | vidConvCpyRGB565: @ void *to, void *from, int pixels\r |
| 1257 | stmfd sp!, {r4-r9,lr}\r |
| 1258 | \r |
| 1259 | mov r12, r2, lsr #3 @ repeats\r |
| 1260 | mov lr, #0x001c0000\r |
| 1261 | orr lr, lr, #0x01c @ lr == pattern 0x001c001c\r |
| 1262 | mov r8, #0x00030000\r |
| 1263 | orr r8, r8, #0x003 @ lr == pattern 0x001c001c\r |
| 1264 | \r |
| 1265 | .loopRGB565:\r |
| 1266 | ldmia r1!, {r4-r7}\r |
| 1267 | subs r12, r12, #1\r |
| 1268 | convRGB565 r4\r |
| 1269 | str r4, [r0], #4\r |
| 1270 | convRGB565 r5\r |
| 1271 | str r5, [r0], #4\r |
| 1272 | convRGB565 r6\r |
| 1273 | str r6, [r0], #4\r |
| 1274 | convRGB565 r7\r |
| 1275 | str r7, [r0], #4\r |
| 1276 | \r |
| 1277 | bgt .loopRGB565\r |
| 1278 | \r |
| 1279 | ldmfd sp!, {r4-r9,lr}\r |
| 1280 | bx lr\r |
| 1281 | \r |
| 1282 | \r |
| 1283 | \r |
| 1284 | .global FinalizeLineRGB555 @ int sh\r |
| 1285 | \r |
| 1286 | FinalizeLineRGB555:\r |
| 1287 | stmfd sp!, {r4-r8,lr}\r |
| 1288 | ldr r5, =(Pico+0x22228) @ Pico.video\r |
| 1289 | ldr r4, =HighPal\r |
| 1290 | \r |
| 1291 | ldrb r7, [r5, #-0x1a] @ 0x2220e ~ dirtyPal\r |
| 1292 | mov r6, r0\r |
| 1293 | mov r1, #0\r |
| 1294 | tst r7, r7\r |
| 1295 | beq .fl_noconvRGB555\r |
| 1296 | strb r1, [r5, #-0x1a]\r |
| 1297 | sub r1, r5, #0x128 @ r1=Pico.cram\r |
| 1298 | mov r0, r4\r |
| 1299 | mov r2, #0x40\r |
| 1300 | bl vidConvCpyRGB565\r |
| 1301 | \r |
| 1302 | .fl_noconvRGB555:\r |
| 1303 | ldrb r12, [r5, #12]\r |
| 1304 | ldr r0, =DrawLineDest\r |
| 1305 | ldr r0, [r0]\r |
| 1306 | \r |
| 1307 | tst r12, #1\r |
| 1308 | movne r2, #320/8 @ len\r |
| 1309 | bne .fl_no32colRGB555\r |
| 1310 | ldr r3, =PicoOpt\r |
| 1311 | mov r2, #256/8\r |
| 1312 | ldr r3, [r3]\r |
| 1313 | tst r3, #0x100\r |
| 1314 | addeq r0, r0, #32*2\r |
| 1315 | \r |
| 1316 | .fl_no32colRGB555:\r |
| 1317 | mov r3, r4\r |
| 1318 | tst r6, r6\r |
| 1319 | beq .fl_noshRGB555\r |
| 1320 | tst r7, r7\r |
| 1321 | beq .fl_noshRGB555\r |
| 1322 | \r |
| 1323 | @ shadowed pixels:\r |
| 1324 | mov r12, #0x008e\r |
| 1325 | orr r12,r12,#0x7300\r |
| 1326 | orr r12,r12,r12,lsl #16\r |
| 1327 | add r4, r3, #0x40*2\r |
| 1328 | add r5, r3, #0xc0*2\r |
| 1329 | mov lr, #0x40/4\r |
| 1330 | .fl_loopcpRGB555_sh:\r |
| 1331 | ldmia r3!, {r1,r6}\r |
| 1332 | subs lr, lr, #1\r |
| 1333 | and r1, r12, r1, lsr #1\r |
| 1334 | and r6, r12, r6, lsr #1\r |
| 1335 | stmia r4!, {r1,r6}\r |
| 1336 | stmia r5!, {r1,r6}\r |
| 1337 | bne .fl_loopcpRGB555_sh\r |
| 1338 | \r |
| 1339 | @ hilighted pixels:\r |
| 1340 | sub r3, r3, #0x40*2\r |
| 1341 | mov lr, #0x40/2\r |
| 1342 | .fl_loopcpRGB555_hi:\r |
| 1343 | ldr r1, [r3], #4\r |
| 1344 | TileDoShHi2Pixels555 r1\r |
| 1345 | str r1, [r4], #4\r |
| 1346 | subs lr, lr, #1\r |
| 1347 | bne .fl_loopcpRGB555_hi\r |
| 1348 | \r |
| 1349 | sub r3, r3, #0x40*2\r |
| 1350 | \r |
| 1351 | \r |
| 1352 | .fl_noshRGB555:\r |
| 1353 | ldr r1, =(HighCol+8)\r |
| 1354 | mov lr, #0xff\r |
| 1355 | mov lr, lr, lsl #1\r |
| 1356 | \r |
| 1357 | .fl_loopRGB555:\r |
| 1358 | \r |
| 1359 | ldr r12, [r1], #4\r |
| 1360 | ldr r7, [r1], #4\r |
| 1361 | \r |
| 1362 | and r4, lr, r12, lsl #1\r |
| 1363 | ldrh r4, [r3, r4]\r |
| 1364 | and r5, lr, r12, lsr #7\r |
| 1365 | ldrh r5, [r3, r5]\r |
| 1366 | and r6, lr, r12, lsr #15\r |
| 1367 | ldrh r6, [r3, r6]\r |
| 1368 | orr r4, r4, r5, lsl #16\r |
| 1369 | \r |
| 1370 | and r5, lr, r12, lsr #23\r |
| 1371 | ldrh r5, [r3, r5]\r |
| 1372 | and r8, lr, r7, lsl #1\r |
| 1373 | ldrh r8, [r3, r8]\r |
| 1374 | orr r5, r6, r5, lsl #16\r |
| 1375 | \r |
| 1376 | and r6, lr, r7, lsr #7\r |
| 1377 | ldrh r6, [r3, r6]\r |
| 1378 | and r12,lr, r7, lsr #15\r |
| 1379 | ldrh r12,[r3, r12]\r |
| 1380 | orr r8, r8, r6, lsl #16\r |
| 1381 | \r |
| 1382 | and r6, lr, r7, lsr #23\r |
| 1383 | ldrh r6, [r3, r6] @ 1 cycle interlock here (r6)\r |
| 1384 | subs r2, r2, #1\r |
| 1385 | orr r12,r12, r6, lsl #16\r |
| 1386 | \r |
| 1387 | stmia r0!, {r4,r5,r8,r12}\r |
| 1388 | bne .fl_loopRGB555\r |
| 1389 | \r |
| 1390 | \r |
| 1391 | ldmfd sp!, {r4-r8,lr}\r |
| 1392 | bx lr\r |
| 1393 | \r |
| 1394 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 1395 | \r |
| 1396 | @ utility\r |
| 1397 | .global blockcpy @ void *dst, void *src, size_t n\r |
| 1398 | \r |
| 1399 | blockcpy:\r |
| 1400 | stmfd sp!, {r4,r5}\r |
| 1401 | mov r2, r2, lsr #4\r |
| 1402 | blockcpy_loop:\r |
| 1403 | ldmia r1!, {r3-r5,r12}\r |
| 1404 | subs r2, r2, #1\r |
| 1405 | stmia r0!, {r3-r5,r12}\r |
| 1406 | bne blockcpy_loop\r |
| 1407 | ldmfd sp!, {r4,r5}\r |
| 1408 | bx lr\r |
| 1409 | \r |
| 1410 | \r |
| 1411 | .global blockcpy_or @ void *dst, void *src, size_t n, int pat\r |
| 1412 | \r |
| 1413 | blockcpy_or:\r |
| 1414 | stmfd sp!, {r4-r6}\r |
| 1415 | orr r3, r3, r3, lsl #8\r |
| 1416 | orr r3, r3, r3, lsl #16\r |
| 1417 | mov r2, r2, lsr #4\r |
| 1418 | blockcpy_loop_or:\r |
| 1419 | ldmia r1!, {r4-r6,r12}\r |
| 1420 | subs r2, r2, #1\r |
| 1421 | orr r4, r4, r3\r |
| 1422 | orr r5, r5, r3\r |
| 1423 | orr r6, r6, r3\r |
| 1424 | orr r12,r12,r3\r |
| 1425 | stmia r0!, {r4-r6,r12}\r |
| 1426 | bne blockcpy_loop_or\r |
| 1427 | ldmfd sp!, {r4-r6}\r |
| 1428 | bx lr\r |
| 1429 | \r |
notaz.gp2x.de / picodrive.git / blame