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annotate dis.c @ 20:f664eeb55cb4

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Mostly broken VDP core and savestate viewer
author Mike Pavone <pavone@retrodev.com>
date Sat, 08 Dec 2012 02:00:54 -0800
parents 3e7bfde7606e
children ec71370820f2
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5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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1 #include "68kinst.h"
5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4
5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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5 int main(int argc, char ** argv)
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6 {
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7 long filesize;
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8 unsigned short *filebuf;
5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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9 char disbuf[1024];
5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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10 m68kinst instbuf;
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11 unsigned short * cur;
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12 FILE * f = fopen(argv[1], "rb");
5df303bf72e6 Improve 68K instruction decoding. Add simple disassembler.
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13 fseek(f, 0, SEEK_END);
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14 filesize = ftell(f);
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15 fseek(f, 0, SEEK_SET);
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16 filebuf = malloc(filesize);
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17 fread(filebuf, 2, filesize/2, f);
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18 fclose(f);
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19 for(cur = filebuf; cur - filebuf < (filesize/2); ++cur)
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20 {
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21 *cur = (*cur >> 8) | (*cur << 8);
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22 }
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f664eeb55cb4 Mostly broken VDP core and savestate viewer
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23 for(cur = filebuf + 0x100; (cur - filebuf) < (filesize/2); )
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24 {
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23b83d94c633 Finish bit/movep/immediate group except for 68020 instructions
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25 //printf("cur: %p: %x\n", cur, *cur);
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168b1a873895 Improve disassembly. FIx some decoding bugs.
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26 unsigned short * start = cur;
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3e7bfde7606e M68K to x86 translation works for a limited subset of instructions and addressing modes
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27 cur = m68k_decode(cur, &instbuf, (start - filebuf)*2);
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28 m68k_disasm(&instbuf, disbuf);
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29 printf("%X: %s\n", instbuf.address, disbuf);
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30 }
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31 return 0;
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32 }