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1 | @ vim:filetype=armasm\r |
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2 | @ some color conversion and blitting routines\r |
| 3 | \r |
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4 | @ (c) Copyright 2006, 2007 notaz\r |
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5 | @ All Rights Reserved\r |
| 6 | \r |
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7 | @ vim:filetype=armasm\r |
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8 | \r |
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9 | .text\r |
| 10 | .align 4\r |
| 11 | \r |
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12 | @ Convert 0000bbb0 ggg0rrr0 0000bbb0 ggg0rrr0\r |
| 13 | @ to 00000000 rrr00000 ggg00000 bbb00000 ...\r |
| 14 | \r |
| 15 | @ lr = 0x00e000e0, out: r3=lower_pix, r2=higher_pix; trashes rin\r |
| 16 | @ if sh==2, r8=0x00404040 (sh!=0 destroys flags!)\r |
| 17 | .macro convRGB32_2 rin sh=0\r |
| 18 | and r2, lr, \rin, lsr #4 @ blue\r |
| 19 | and r3, \rin, lr\r |
| 20 | orr r2, r2, r3, lsl #8 @ g0b0g0b0\r |
| 21 | \r |
| 22 | mov r3, r2, lsl #16 @ g0b00000\r |
| 23 | and \rin,lr, \rin, ror #12 @ 00r000r0 (reversed)\r |
| 24 | orr r3, r3, \rin, lsr #16 @ g0b000r0\r |
| 25 | .if \sh == 1\r |
| 26 | mov r3, r3, ror #17 @ shadow mode\r |
| 27 | .elseif \sh == 2\r |
| 28 | adds r3, r3, #0x40000000 @ green\r |
| 29 | orrcs r3, r3, #0xe0000000\r |
| 30 | mov r3, r3, ror #8\r |
| 31 | adds r3, r3, #0x40000000\r |
| 32 | orrcs r3, r3, #0xe0000000\r |
| 33 | mov r3, r3, ror #16\r |
| 34 | adds r3, r3, #0x40000000\r |
| 35 | orrcs r3, r3, #0xe0000000\r |
| 36 | mov r3, r3, ror #24\r |
| 37 | .else\r |
| 38 | mov r3, r3, ror #16 @ r3=low\r |
| 39 | .endif\r |
| 40 | \r |
| 41 | orr r3, r3, r3, lsr #3\r |
| 42 | str r3, [r0], #4\r |
| 43 | \r |
| 44 | mov r2, r2, lsr #16\r |
| 45 | orr r2, r2, \rin, lsl #16\r |
| 46 | .if \sh == 1\r |
| 47 | mov r2, r2, lsr #1\r |
| 48 | .elseif \sh == 2\r |
| 49 | mov r2, r2, ror #8\r |
| 50 | adds r2, r2, #0x40000000 @ blue\r |
| 51 | orrcs r2, r2, #0xe0000000\r |
| 52 | mov r2, r2, ror #8\r |
| 53 | adds r2, r2, #0x40000000\r |
| 54 | orrcs r2, r2, #0xe0000000\r |
| 55 | mov r2, r2, ror #8\r |
| 56 | adds r2, r2, #0x40000000\r |
| 57 | orrcs r2, r2, #0xe0000000\r |
| 58 | mov r2, r2, ror #8\r |
| 59 | .endif\r |
| 60 | \r |
| 61 | orr r2, r2, r2, lsr #3\r |
| 62 | str r2, [r0], #4\r |
| 63 | .endm\r |
| 64 | \r |
| 65 | \r |
| 66 | .global vidConvCpyRGB32 @ void *to, void *from, int pixels\r |
| 67 | \r |
| 68 | vidConvCpyRGB32:\r |
| 69 | stmfd sp!, {r4-r7,lr}\r |
| 70 | \r |
| 71 | mov r12, r2, lsr #3 @ repeats\r |
| 72 | mov lr, #0x00e00000\r |
| 73 | orr lr, lr, #0x00e0\r |
| 74 | \r |
| 75 | .loopRGB32:\r |
| 76 | subs r12, r12, #1\r |
| 77 | \r |
| 78 | ldmia r1!, {r4-r7}\r |
| 79 | convRGB32_2 r4\r |
| 80 | convRGB32_2 r5\r |
| 81 | convRGB32_2 r6\r |
| 82 | convRGB32_2 r7\r |
| 83 | \r |
| 84 | bgt .loopRGB32\r |
| 85 | \r |
| 86 | ldmfd sp!, {r4-r7,lr}\r |
| 87 | bx lr\r |
| 88 | \r |
| 89 | \r |
| 90 | .global vidConvCpyRGB32sh @ void *to, void *from, int pixels\r |
| 91 | \r |
| 92 | vidConvCpyRGB32sh:\r |
| 93 | stmfd sp!, {r4-r7,lr}\r |
| 94 | \r |
| 95 | mov r12, r2, lsr #3 @ repeats\r |
| 96 | mov lr, #0x00e00000\r |
| 97 | orr lr, lr, #0x00e0\r |
| 98 | \r |
| 99 | .loopRGB32sh:\r |
| 100 | subs r12, r12, #1\r |
| 101 | \r |
| 102 | ldmia r1!, {r4-r7}\r |
| 103 | convRGB32_2 r4, 1\r |
| 104 | convRGB32_2 r5, 1\r |
| 105 | convRGB32_2 r6, 1\r |
| 106 | convRGB32_2 r7, 1\r |
| 107 | \r |
| 108 | bgt .loopRGB32sh\r |
| 109 | \r |
| 110 | ldmfd sp!, {r4-r7,lr}\r |
| 111 | bx lr\r |
| 112 | \r |
| 113 | \r |
| 114 | .global vidConvCpyRGB32hi @ void *to, void *from, int pixels\r |
| 115 | \r |
| 116 | vidConvCpyRGB32hi:\r |
| 117 | stmfd sp!, {r4-r7,lr}\r |
| 118 | \r |
| 119 | mov r12, r2, lsr #3 @ repeats\r |
| 120 | mov lr, #0x00e00000\r |
| 121 | orr lr, lr, #0x00e0\r |
| 122 | \r |
| 123 | .loopRGB32hi:\r |
| 124 | ldmia r1!, {r4-r7}\r |
| 125 | convRGB32_2 r4, 2\r |
| 126 | convRGB32_2 r5, 2\r |
| 127 | convRGB32_2 r6, 2\r |
| 128 | convRGB32_2 r7, 2\r |
| 129 | \r |
| 130 | subs r12, r12, #1\r |
| 131 | bgt .loopRGB32hi\r |
| 132 | \r |
| 133 | ldmfd sp!, {r4-r7,lr}\r |
| 134 | bx lr\r |
| 135 | \r |
| 136 | \r |
| 137 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 138 | \r |
| 139 | \r |
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140 | @ mode2 blitter\r |
| 141 | .global vidcpy_m2 @ void *dest, void *src, int m32col, int with_32c_border\r |
| 142 | vidcpy_m2:\r |
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143 | stmfd sp!, {r4-r6,lr}\r |
| 144 | \r |
| 145 | mov r12, #224 @ lines\r |
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146 | add r0, r0, #320*8\r |
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147 | add r1, r1, #8\r |
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148 | mov lr, #0\r |
| 149 | \r |
| 150 | tst r2, r2\r |
| 151 | movne lr, #64\r |
| 152 | tstne r3, r3\r |
| 153 | addne r0, r0, #32\r |
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154 | \r |
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155 | vidCpyM2_loop_out:\r |
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156 | mov r6, #10\r |
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157 | sub r6, r6, lr, lsr #5 @ -= 2 in 32col mode\r |
| 158 | vidCpyM2_loop:\r |
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159 | subs r6, r6, #1\r |
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160 | ldmia r1!, {r2-r5}\r |
| 161 | stmia r0!, {r2-r5}\r |
| 162 | ldmia r1!, {r2-r5}\r |
| 163 | stmia r0!, {r2-r5}\r |
| 164 | bne vidCpyM2_loop\r |
| 165 | \r |
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166 | subs r12,r12,#1\r |
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167 | add r0, r0, lr\r |
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168 | add r1, r1, #8\r |
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169 | add r1, r1, lr\r |
| 170 | bne vidCpyM2_loop_out\r |
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171 | \r |
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172 | ldmfd sp!, {r4-r6,pc}\r |
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173 | \r |
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174 | \r |
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175 | .global vidcpy_m2_rot @ void *dest, void *src, int m32col, int with_32c_border\r |
| 176 | vidcpy_m2_rot:\r |
| 177 | stmfd sp!,{r4-r8,lr}\r |
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178 | add r1, r1, #8\r |
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179 | tst r2, r2\r |
| 180 | subne r1, r1, #32 @ adjust\r |
| 181 | \r |
| 182 | mov r4, r0\r |
| 183 | mov r5, r1\r |
| 184 | mov r6, r2\r |
| 185 | mov r7, #8+4\r |
| 186 | \r |
| 187 | vidcpy_m2_rot_loop:\r |
| 188 | @ a bit lame but oh well..\r |
| 189 | mov r0, r4\r |
| 190 | mov r1, r5\r |
| 191 | mov r2, r7\r |
| 192 | mov r3, r6\r |
| 193 | mov r8, #328\r |
| 194 | adr lr, after_rot_blit8\r |
| 195 | stmfd sp!,{r4-r8,lr}\r |
| 196 | b rotated_blit8_2\r |
| 197 | \r |
| 198 | after_rot_blit8:\r |
| 199 | add r5, r5, #328*4\r |
| 200 | add r7, r7, #4\r |
| 201 | cmp r7, #224+8+4\r |
| 202 | ldmgefd sp!,{r4-r8,pc}\r |
| 203 | b vidcpy_m2_rot_loop\r |
| 204 | \r |
| 205 | \r |
| 206 | .global rotated_blit8 @ void *dst, void *linesx4, u32 y, int is_32col\r |
| 207 | rotated_blit8:\r |
| 208 | stmfd sp!,{r4-r8,lr}\r |
| 209 | mov r8, #320\r |
| 210 | \r |
| 211 | rotated_blit8_2:\r |
| 212 | add r0, r0, #(240*320)\r |
| 213 | sub r0, r0, #(240+4) @ y starts from 4\r |
| 214 | add r0, r0, r2\r |
| 215 | \r |
| 216 | tst r3, r3\r |
| 217 | subne r0, r0, #(240*32)\r |
| 218 | addne r1, r1, #32\r |
| 219 | movne lr, #256/4\r |
| 220 | moveq lr, #320/4\r |
| 221 | \r |
| 222 | rotated_blit_loop8:\r |
| 223 | mov r6, r1\r |
| 224 | ldr r2, [r6], r8\r |
| 225 | ldr r3, [r6], r8\r |
| 226 | ldr r4, [r6], r8\r |
| 227 | ldr r5, [r6], r8\r |
| 228 | \r |
| 229 | mov r6, r2, lsl #24\r |
| 230 | mov r6, r6, lsr #8\r |
| 231 | orr r6, r6, r3, lsl #24\r |
| 232 | mov r6, r6, lsr #8\r |
| 233 | orr r6, r6, r4, lsl #24\r |
| 234 | mov r6, r6, lsr #8\r |
| 235 | orr r6, r6, r5, lsl #24\r |
| 236 | str r6, [r0], #-240\r |
| 237 | \r |
| 238 | and r6, r3, #0xff00\r |
| 239 | and r7, r2, #0xff00\r |
| 240 | orr r6, r6, r7, lsr #8\r |
| 241 | and r7, r4, #0xff00\r |
| 242 | orr r6, r6, r7, lsl #8\r |
| 243 | and r7, r5, #0xff00\r |
| 244 | orr r6, r6, r7, lsl #16\r |
| 245 | str r6, [r0], #-240\r |
| 246 | \r |
| 247 | and r6, r4, #0xff0000\r |
| 248 | and r7, r2, #0xff0000\r |
| 249 | orr r6, r6, r7, lsr #16\r |
| 250 | and r7, r3, #0xff0000\r |
| 251 | orr r6, r6, r7, lsr #8\r |
| 252 | and r7, r5, #0xff0000\r |
| 253 | orr r6, r6, r7, lsl #8\r |
| 254 | str r6, [r0], #-240\r |
| 255 | \r |
| 256 | mov r6, r5, lsr #24\r |
| 257 | mov r6, r6, lsl #8\r |
| 258 | orr r6, r6, r4, lsr #24\r |
| 259 | mov r6, r6, lsl #8\r |
| 260 | orr r6, r6, r3, lsr #24\r |
| 261 | mov r6, r6, lsl #8\r |
| 262 | orr r6, r6, r2, lsr #24\r |
| 263 | str r6, [r0], #-240\r |
| 264 | \r |
| 265 | subs lr, lr, #1\r |
| 266 | add r1, r1, #4\r |
| 267 | bne rotated_blit_loop8\r |
| 268 | \r |
| 269 | ldmfd sp!,{r4-r8,pc}\r |
| 270 | \r |
| 271 | \r |
| 272 | @ input: r2-r5\r |
| 273 | @ output: r7,r8\r |
| 274 | @ trash: r6\r |
| 275 | .macro rb_line_low\r |
| 276 | mov r6, r2, lsl #16\r |
| 277 | mov r7, r3, lsl #16\r |
| 278 | orr r7, r7, r6, lsr #16\r |
| 279 | mov r6, r4, lsl #16\r |
| 280 | mov r8, r5, lsl #16\r |
| 281 | orr r8, r8, r6, lsr #16\r |
| 282 | .endm\r |
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283 | \r |
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284 | .macro rb_line_hi\r |
| 285 | mov r6, r2, lsr #16\r |
| 286 | mov r7, r3, lsr #16\r |
| 287 | orr r7, r6, r7, lsl #16\r |
| 288 | mov r6, r4, lsr #16\r |
| 289 | mov r8, r5, lsr #16\r |
| 290 | orr r8, r6, r8, lsl #16\r |
| 291 | .endm\r |
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292 | \r |
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293 | .global rotated_blit16 @ void *dst, void *linesx4, u32 y, int is_32col\r |
| 294 | rotated_blit16:\r |
| 295 | stmfd sp!,{r4-r8,lr}\r |
| 296 | \r |
| 297 | add r0, r0, #(240*320)*2\r |
| 298 | sub r0, r0, #(240+4)*2 @ y starts from 4\r |
| 299 | add r0, r0, r2, lsl #1\r |
| 300 | \r |
| 301 | tst r3, r3\r |
| 302 | subne r0, r0, #(240*32)*2\r |
| 303 | addne r1, r1, #32*2\r |
| 304 | movne lr, #256/4\r |
| 305 | moveq lr, #320/4\r |
| 306 | \r |
| 307 | rotated_blit_loop16:\r |
| 308 | ldr r2, [r1, #320*0*2]\r |
| 309 | ldr r3, [r1, #320*1*2]\r |
| 310 | ldr r4, [r1, #320*2*2]\r |
| 311 | ldr r5, [r1, #320*3*2]\r |
| 312 | rb_line_low\r |
| 313 | stmia r0, {r7,r8}\r |
| 314 | sub r0, r0, #240*2\r |
| 315 | rb_line_hi\r |
| 316 | stmia r0, {r7,r8}\r |
| 317 | sub r0, r0, #240*2\r |
| 318 | \r |
| 319 | ldr r2, [r1, #320*0*2+4]\r |
| 320 | ldr r3, [r1, #320*1*2+4]\r |
| 321 | ldr r4, [r1, #320*2*2+4]\r |
| 322 | ldr r5, [r1, #320*3*2+4]\r |
| 323 | rb_line_low\r |
| 324 | stmia r0, {r7,r8}\r |
| 325 | sub r0, r0, #240*2\r |
| 326 | rb_line_hi\r |
| 327 | stmia r0, {r7,r8}\r |
| 328 | sub r0, r0, #240*2\r |
| 329 | \r |
| 330 | subs lr, lr, #1\r |
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331 | add r1, r1, #8\r |
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332 | bne rotated_blit_loop16\r |
| 333 | \r |
| 334 | ldmfd sp!,{r4-r8,pc}\r |
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335 | \r |
| 336 | \r |
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337 | .global spend_cycles @ c\r |
| 338 | \r |
| 339 | spend_cycles:\r |
| 340 | mov r0, r0, lsr #2 @ 4 cycles/iteration\r |
| 341 | sub r0, r0, #2 @ entry/exit/init\r |
| 342 | .sc_loop:\r |
| 343 | subs r0, r0, #1\r |
| 344 | bpl .sc_loop\r |
| 345 | \r |
| 346 | bx lr\r |
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347 | \r |
notaz.gp2x.de / libpicofe.git / blame