| | 1 | @ vim:filetype=armasm\r |
| | 2 | @ some color conversion and blitting routines\r |
| | 3 | \r |
| | 4 | @ (c) Copyright 2006, 2007 notaz\r |
| | 5 | @ All Rights Reserved\r |
| | 6 | \r |
| | 7 | @ vim:filetype=armasm\r |
| | 8 | \r |
| | 9 | .text\r |
| | 10 | .align 4\r |
| | 11 | \r |
| | 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 |
| | 140 | @ mode2 blitter for 40 cols\r |
| | 141 | .global vidCpyM2_40col @ void *dest, void *src\r |
| | 142 | \r |
| | 143 | vidCpyM2_40col:\r |
| | 144 | stmfd sp!, {r4-r6,lr}\r |
| | 145 | \r |
| | 146 | mov r12, #224 @ lines\r |
| | 147 | add r1, r1, #8\r |
| | 148 | \r |
| | 149 | vidCpyM2_40_loop_out:\r |
| | 150 | mov r6, #10\r |
| | 151 | vidCpyM2_40_loop:\r |
| | 152 | subs r6, r6, #1\r |
| | 153 | ldmia r1!, {r2-r5}\r |
| | 154 | stmia r0!, {r2-r5}\r |
| | 155 | ldmia r1!, {r2-r5}\r |
| | 156 | stmia r0!, {r2-r5}\r |
| | 157 | bne vidCpyM2_40_loop\r |
| | 158 | subs r12,r12,#1\r |
| | 159 | add r1, r1, #8\r |
| | 160 | bne vidCpyM2_40_loop_out\r |
| | 161 | \r |
| | 162 | ldmfd sp!, {r4-r6,lr}\r |
| | 163 | bx lr\r |
| | 164 | \r |
| | 165 | \r |
| | 166 | @ mode2 blitter for 32 cols\r |
| | 167 | .global vidCpyM2_32col @ void *dest, void *src\r |
| | 168 | \r |
| | 169 | vidCpyM2_32col:\r |
| | 170 | stmfd sp!, {r4-r6,lr}\r |
| | 171 | \r |
| | 172 | mov r12, #224 @ lines\r |
| | 173 | add r1, r1, #8\r |
| | 174 | add r0, r0, #32\r |
| | 175 | \r |
| | 176 | vidCpyM2_32_loop_out:\r |
| | 177 | mov r6, #8\r |
| | 178 | vidCpyM2_32_loop:\r |
| | 179 | subs r6, r6, #1\r |
| | 180 | ldmia r1!, {r2-r5}\r |
| | 181 | stmia r0!, {r2-r5}\r |
| | 182 | ldmia r1!, {r2-r5}\r |
| | 183 | stmia r0!, {r2-r5}\r |
| | 184 | bne vidCpyM2_32_loop\r |
| | 185 | subs r12,r12,#1\r |
| | 186 | add r0, r0, #64\r |
| | 187 | add r1, r1, #8+64\r |
| | 188 | bne vidCpyM2_32_loop_out\r |
| | 189 | \r |
| | 190 | ldmfd sp!, {r4-r6,lr}\r |
| | 191 | bx lr\r |
| | 192 | \r |
| | 193 | \r |
| | 194 | @ mode2 blitter for 32 cols with no borders\r |
| | 195 | .global vidCpyM2_32col_nobord @ void *dest, void *src\r |
| | 196 | \r |
| | 197 | vidCpyM2_32col_nobord:\r |
| | 198 | stmfd sp!, {r4-r6,lr}\r |
| | 199 | \r |
| | 200 | mov r12, #224 @ lines\r |
| | 201 | add r1, r1, #8\r |
| | 202 | b vidCpyM2_32_loop_out\r |
| | 203 | \r |
| | 204 | \r |
| | 205 | .global spend_cycles @ c\r |
| | 206 | \r |
| | 207 | spend_cycles:\r |
| | 208 | mov r0, r0, lsr #2 @ 4 cycles/iteration\r |
| | 209 | sub r0, r0, #2 @ entry/exit/init\r |
| | 210 | .sc_loop:\r |
| | 211 | subs r0, r0, #1\r |
| | 212 | bpl .sc_loop\r |
| | 213 | \r |
| | 214 | bx lr\r |
| | 215 | \r |
| | 216 | \r |
| | 217 | .global flushcache\r |
| | 218 | \r |
| | 219 | flushcache:\r |
| | 220 | swi #0x9f0002\r |
| | 221 | mov pc, lr\r |
| | 222 | \r |
| | 223 | \r |
notaz.gp2x.de / picodrive.git / blame_incremental