mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
8ef001cc89
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@286 be3aeb3a-fb24-0410-a615-afba39da0efa
70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
#include <stdio.h>
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#include <string.h>
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static FILE *fo = NULL;
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static void out(int r, int is_last)
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{
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if (!is_last)
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{
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fprintf(fo, " or $t%i, $t%i, $a2\n", r, r);
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fprintf(fo, " sb $t%i, %i($a0)\n", r, r);
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}
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else
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{
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fprintf(fo, " or $t%i, $t%i, $a2\n", r, r);
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fprintf(fo, " jr $ra\n");
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fprintf(fo, " sb $t%i, %i($a0)\n", r, r);
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}
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}
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unsigned char pattern_db[0x100];
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static int check_label(unsigned char i)
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{
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if (!pattern_db[i]) {
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fprintf(fo, "tile%i%i%i%i%i%i%i%i:\n", (i&0x80)?1:0, (i&0x40)?1:0, (i&0x20)?1:0, (i&0x10)?1:0,
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(i&0x08)?1:0, (i&0x04)?1:0, (i&0x02)?1:0, (i&0x01)?1:0);
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pattern_db[i] = 1;
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return 0;
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}
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return 1;
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}
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int main()
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{
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int i;
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fo = fopen("out.s", "w");
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if (!fo) return 1;
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memset(pattern_db, 0, sizeof(pattern_db));
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for (i = 0xff; i > 0; i--)
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{
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if (check_label(i)) continue;
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if (i & 0x01) out(0, !(i&0xfe));
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check_label(i&0xfe);
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if (i & 0x02) out(1, !(i&0xfc));
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check_label(i&0xfc);
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if (i & 0x04) out(2, !(i&0xf8));
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check_label(i&0xf8);
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if (i & 0x08) out(3, !(i&0xf0));
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check_label(i&0xf0);
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if (i & 0x10) out(4, !(i&0xe0));
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check_label(i&0xe0);
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if (i & 0x20) out(5, !(i&0xc0));
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check_label(i&0xc0);
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if (i & 0x40) out(6, !(i&0x80));
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check_label(i&0x80);
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if (i & 0x80) out(7, 1);
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}
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fclose(fo);
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return 0;
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}
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