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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 |
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16 | .macro convRGB32_2 rin sh=0\r |
| 17 | and r2, lr, \rin, lsr #4 @ blue\r |
| 18 | and r3, \rin, lr\r |
| 19 | orr r2, r2, r3, lsl #8 @ g0b0g0b0\r |
| 20 | \r |
| 21 | mov r3, r2, lsl #16 @ g0b00000\r |
| 22 | and \rin,lr, \rin, ror #12 @ 00r000r0 (reversed)\r |
| 23 | orr r3, r3, \rin, lsr #16 @ g0b000r0\r |
| 24 | .if \sh == 1\r |
| 25 | mov r3, r3, ror #17 @ shadow mode\r |
| 26 | .elseif \sh == 2\r |
| 27 | adds r3, r3, #0x40000000 @ green\r |
| 28 | orrcs r3, r3, #0xe0000000\r |
| 29 | mov r3, r3, ror #8\r |
| 30 | adds r3, r3, #0x40000000\r |
| 31 | orrcs r3, r3, #0xe0000000\r |
| 32 | mov r3, r3, ror #16\r |
| 33 | adds r3, r3, #0x40000000\r |
| 34 | orrcs r3, r3, #0xe0000000\r |
| 35 | mov r3, r3, ror #24\r |
| 36 | .else\r |
| 37 | mov r3, r3, ror #16 @ r3=low\r |
| 38 | .endif\r |
| 39 | \r |
| 40 | orr r3, r3, r3, lsr #3\r |
| 41 | str r3, [r0], #4\r |
| 42 | \r |
| 43 | mov r2, r2, lsr #16\r |
| 44 | orr r2, r2, \rin, lsl #16\r |
| 45 | .if \sh == 1\r |
| 46 | mov r2, r2, lsr #1\r |
| 47 | .elseif \sh == 2\r |
| 48 | mov r2, r2, ror #8\r |
| 49 | adds r2, r2, #0x40000000 @ blue\r |
| 50 | orrcs r2, r2, #0xe0000000\r |
| 51 | mov r2, r2, ror #8\r |
| 52 | adds r2, r2, #0x40000000\r |
| 53 | orrcs r2, r2, #0xe0000000\r |
| 54 | mov r2, r2, ror #8\r |
| 55 | adds r2, r2, #0x40000000\r |
| 56 | orrcs r2, r2, #0xe0000000\r |
| 57 | mov r2, r2, ror #8\r |
| 58 | .endif\r |
| 59 | \r |
| 60 | orr r2, r2, r2, lsr #3\r |
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61 | .if \sh == 1\r |
| 62 | str r2, [r0, #0x40*2*4]\r |
| 63 | .endif\r |
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64 | str r2, [r0], #4\r |
| 65 | .endm\r |
| 66 | \r |
| 67 | \r |
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68 | .global bgr444_to_rgb32 @ void *to, void *from\r |
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69 | \r |
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70 | bgr444_to_rgb32:\r |
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71 | stmfd sp!, {r4-r7,lr}\r |
| 72 | \r |
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73 | mov r12, #0x40>>3 @ repeats\r |
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74 | mov lr, #0x00e00000\r |
| 75 | orr lr, lr, #0x00e0\r |
| 76 | \r |
| 77 | .loopRGB32:\r |
| 78 | subs r12, r12, #1\r |
| 79 | \r |
| 80 | ldmia r1!, {r4-r7}\r |
| 81 | convRGB32_2 r4\r |
| 82 | convRGB32_2 r5\r |
| 83 | convRGB32_2 r6\r |
| 84 | convRGB32_2 r7\r |
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85 | bgt .loopRGB32\r |
| 86 | \r |
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87 | ldmfd sp!, {r4-r7,pc}\r |
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88 | \r |
| 89 | \r |
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90 | .global bgr444_to_rgb32_sh @ void *to, void *from\r |
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91 | \r |
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92 | bgr444_to_rgb32_sh:\r |
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93 | stmfd sp!, {r4-r7,lr}\r |
| 94 | \r |
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95 | mov r12, #0x40>>3 @ repeats\r |
| 96 | add r0, r0, #0x40*4\r |
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97 | mov lr, #0x00e00000\r |
| 98 | orr lr, lr, #0x00e0\r |
| 99 | \r |
| 100 | .loopRGB32sh:\r |
| 101 | subs r12, r12, #1\r |
| 102 | \r |
| 103 | ldmia r1!, {r4-r7}\r |
| 104 | convRGB32_2 r4, 1\r |
| 105 | convRGB32_2 r5, 1\r |
| 106 | convRGB32_2 r6, 1\r |
| 107 | convRGB32_2 r7, 1\r |
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108 | bgt .loopRGB32sh\r |
| 109 | \r |
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110 | mov r12, #0x40>>3 @ repeats\r |
| 111 | sub r1, r1, #0x40*2\r |
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112 | \r |
| 113 | .loopRGB32hi:\r |
| 114 | ldmia r1!, {r4-r7}\r |
| 115 | convRGB32_2 r4, 2\r |
| 116 | convRGB32_2 r5, 2\r |
| 117 | convRGB32_2 r6, 2\r |
| 118 | convRGB32_2 r7, 2\r |
| 119 | \r |
| 120 | subs r12, r12, #1\r |
| 121 | bgt .loopRGB32hi\r |
| 122 | \r |
| 123 | ldmfd sp!, {r4-r7,lr}\r |
| 124 | bx lr\r |
| 125 | \r |
| 126 | \r |
| 127 | @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r |
| 128 | \r |
| 129 | \r |
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130 | @ mode2 blitter\r |
| 131 | .global vidcpy_m2 @ void *dest, void *src, int m32col, int with_32c_border\r |
| 132 | vidcpy_m2:\r |
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133 | stmfd sp!, {r4-r6,lr}\r |
| 134 | \r |
| 135 | mov r12, #224 @ lines\r |
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136 | add r0, r0, #320*8\r |
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137 | add r1, r1, #8\r |
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138 | mov lr, #0\r |
| 139 | \r |
| 140 | tst r2, r2\r |
| 141 | movne lr, #64\r |
| 142 | tstne r3, r3\r |
| 143 | addne r0, r0, #32\r |
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144 | \r |
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145 | vidCpyM2_loop_out:\r |
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146 | mov r6, #10\r |
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147 | sub r6, r6, lr, lsr #5 @ -= 2 in 32col mode\r |
| 148 | vidCpyM2_loop:\r |
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149 | subs r6, r6, #1\r |
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150 | ldmia r1!, {r2-r5}\r |
| 151 | stmia r0!, {r2-r5}\r |
| 152 | ldmia r1!, {r2-r5}\r |
| 153 | stmia r0!, {r2-r5}\r |
| 154 | bne vidCpyM2_loop\r |
| 155 | \r |
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156 | subs r12,r12,#1\r |
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157 | add r0, r0, lr\r |
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158 | add r1, r1, #8\r |
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159 | add r1, r1, lr\r |
| 160 | bne vidCpyM2_loop_out\r |
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161 | \r |
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162 | ldmfd sp!, {r4-r6,pc}\r |
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163 | \r |
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164 | \r |
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165 | .global vidcpy_m2_rot @ void *dest, void *src, int m32col, int with_32c_border\r |
| 166 | vidcpy_m2_rot:\r |
| 167 | stmfd sp!,{r4-r8,lr}\r |
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168 | add r1, r1, #8\r |
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169 | tst r2, r2\r |
| 170 | subne r1, r1, #32 @ adjust\r |
| 171 | \r |
| 172 | mov r4, r0\r |
| 173 | mov r5, r1\r |
| 174 | mov r6, r2\r |
| 175 | mov r7, #8+4\r |
| 176 | \r |
| 177 | vidcpy_m2_rot_loop:\r |
| 178 | @ a bit lame but oh well..\r |
| 179 | mov r0, r4\r |
| 180 | mov r1, r5\r |
| 181 | mov r2, r7\r |
| 182 | mov r3, r6\r |
| 183 | mov r8, #328\r |
| 184 | adr lr, after_rot_blit8\r |
| 185 | stmfd sp!,{r4-r8,lr}\r |
| 186 | b rotated_blit8_2\r |
| 187 | \r |
| 188 | after_rot_blit8:\r |
| 189 | add r5, r5, #328*4\r |
| 190 | add r7, r7, #4\r |
| 191 | cmp r7, #224+8+4\r |
| 192 | ldmgefd sp!,{r4-r8,pc}\r |
| 193 | b vidcpy_m2_rot_loop\r |
| 194 | \r |
| 195 | \r |
| 196 | .global rotated_blit8 @ void *dst, void *linesx4, u32 y, int is_32col\r |
| 197 | rotated_blit8:\r |
| 198 | stmfd sp!,{r4-r8,lr}\r |
| 199 | mov r8, #320\r |
| 200 | \r |
| 201 | rotated_blit8_2:\r |
| 202 | add r0, r0, #(240*320)\r |
| 203 | sub r0, r0, #(240+4) @ y starts from 4\r |
| 204 | add r0, r0, r2\r |
| 205 | \r |
| 206 | tst r3, r3\r |
| 207 | subne r0, r0, #(240*32)\r |
| 208 | addne r1, r1, #32\r |
| 209 | movne lr, #256/4\r |
| 210 | moveq lr, #320/4\r |
| 211 | \r |
| 212 | rotated_blit_loop8:\r |
| 213 | mov r6, r1\r |
| 214 | ldr r2, [r6], r8\r |
| 215 | ldr r3, [r6], r8\r |
| 216 | ldr r4, [r6], r8\r |
| 217 | ldr r5, [r6], r8\r |
| 218 | \r |
| 219 | mov r6, r2, lsl #24\r |
| 220 | mov r6, r6, lsr #8\r |
| 221 | orr r6, r6, r3, lsl #24\r |
| 222 | mov r6, r6, lsr #8\r |
| 223 | orr r6, r6, r4, lsl #24\r |
| 224 | mov r6, r6, lsr #8\r |
| 225 | orr r6, r6, r5, lsl #24\r |
| 226 | str r6, [r0], #-240\r |
| 227 | \r |
| 228 | and r6, r3, #0xff00\r |
| 229 | and r7, r2, #0xff00\r |
| 230 | orr r6, r6, r7, lsr #8\r |
| 231 | and r7, r4, #0xff00\r |
| 232 | orr r6, r6, r7, lsl #8\r |
| 233 | and r7, r5, #0xff00\r |
| 234 | orr r6, r6, r7, lsl #16\r |
| 235 | str r6, [r0], #-240\r |
| 236 | \r |
| 237 | and r6, r4, #0xff0000\r |
| 238 | and r7, r2, #0xff0000\r |
| 239 | orr r6, r6, r7, lsr #16\r |
| 240 | and r7, r3, #0xff0000\r |
| 241 | orr r6, r6, r7, lsr #8\r |
| 242 | and r7, r5, #0xff0000\r |
| 243 | orr r6, r6, r7, lsl #8\r |
| 244 | str r6, [r0], #-240\r |
| 245 | \r |
| 246 | mov r6, r5, lsr #24\r |
| 247 | mov r6, r6, lsl #8\r |
| 248 | orr r6, r6, r4, lsr #24\r |
| 249 | mov r6, r6, lsl #8\r |
| 250 | orr r6, r6, r3, lsr #24\r |
| 251 | mov r6, r6, lsl #8\r |
| 252 | orr r6, r6, r2, lsr #24\r |
| 253 | str r6, [r0], #-240\r |
| 254 | \r |
| 255 | subs lr, lr, #1\r |
| 256 | add r1, r1, #4\r |
| 257 | bne rotated_blit_loop8\r |
| 258 | \r |
| 259 | ldmfd sp!,{r4-r8,pc}\r |
| 260 | \r |
| 261 | \r |
| 262 | @ input: r2-r5\r |
| 263 | @ output: r7,r8\r |
| 264 | @ trash: r6\r |
| 265 | .macro rb_line_low\r |
| 266 | mov r6, r2, lsl #16\r |
| 267 | mov r7, r3, lsl #16\r |
| 268 | orr r7, r7, r6, lsr #16\r |
| 269 | mov r6, r4, lsl #16\r |
| 270 | mov r8, r5, lsl #16\r |
| 271 | orr r8, r8, r6, lsr #16\r |
| 272 | .endm\r |
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273 | \r |
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274 | .macro rb_line_hi\r |
| 275 | mov r6, r2, lsr #16\r |
| 276 | mov r7, r3, lsr #16\r |
| 277 | orr r7, r6, r7, lsl #16\r |
| 278 | mov r6, r4, lsr #16\r |
| 279 | mov r8, r5, lsr #16\r |
| 280 | orr r8, r6, r8, lsl #16\r |
| 281 | .endm\r |
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282 | \r |
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283 | .global rotated_blit16 @ void *dst, void *linesx4, u32 y, int is_32col\r |
| 284 | rotated_blit16:\r |
| 285 | stmfd sp!,{r4-r8,lr}\r |
| 286 | \r |
| 287 | add r0, r0, #(240*320)*2\r |
| 288 | sub r0, r0, #(240+4)*2 @ y starts from 4\r |
| 289 | add r0, r0, r2, lsl #1\r |
| 290 | \r |
| 291 | tst r3, r3\r |
| 292 | subne r0, r0, #(240*32)*2\r |
| 293 | addne r1, r1, #32*2\r |
| 294 | movne lr, #256/4\r |
| 295 | moveq lr, #320/4\r |
| 296 | \r |
| 297 | rotated_blit_loop16:\r |
| 298 | ldr r2, [r1, #320*0*2]\r |
| 299 | ldr r3, [r1, #320*1*2]\r |
| 300 | ldr r4, [r1, #320*2*2]\r |
| 301 | ldr r5, [r1, #320*3*2]\r |
| 302 | rb_line_low\r |
| 303 | stmia r0, {r7,r8}\r |
| 304 | sub r0, r0, #240*2\r |
| 305 | rb_line_hi\r |
| 306 | stmia r0, {r7,r8}\r |
| 307 | sub r0, r0, #240*2\r |
| 308 | \r |
| 309 | ldr r2, [r1, #320*0*2+4]\r |
| 310 | ldr r3, [r1, #320*1*2+4]\r |
| 311 | ldr r4, [r1, #320*2*2+4]\r |
| 312 | ldr r5, [r1, #320*3*2+4]\r |
| 313 | rb_line_low\r |
| 314 | stmia r0, {r7,r8}\r |
| 315 | sub r0, r0, #240*2\r |
| 316 | rb_line_hi\r |
| 317 | stmia r0, {r7,r8}\r |
| 318 | sub r0, r0, #240*2\r |
| 319 | \r |
| 320 | subs lr, lr, #1\r |
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321 | add r1, r1, #8\r |
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322 | bne rotated_blit_loop16\r |
| 323 | \r |
| 324 | ldmfd sp!,{r4-r8,pc}\r |
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325 | \r |
| 326 | \r |
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327 | .global spend_cycles @ c\r |
| 328 | \r |
| 329 | spend_cycles:\r |
| 330 | mov r0, r0, lsr #2 @ 4 cycles/iteration\r |
| 331 | sub r0, r0, #2 @ entry/exit/init\r |
| 332 | .sc_loop:\r |
| 333 | subs r0, r0, #1\r |
| 334 | bpl .sc_loop\r |
| 335 | \r |
| 336 | bx lr\r |
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337 | \r |
notaz.gp2x.de / libpicofe.git / blame