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comparison dis.c @ 2:5df303bf72e6

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Improve 68K instruction decoding. Add simple disassembler.
author Mike Pavone <pavone@retrodev.com>
date Sat, 03 Nov 2012 21:38:28 -0700
parents
children 23b83d94c633
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1:5a2c1da6dd0f 2:5df303bf72e6
1 #include "68kinst.h"
2 #include <stdio.h>
3 #include <stdlib.h>
4
5 int main(int argc, char ** argv)
6 {
7 long filesize;
8 unsigned short *filebuf;
9 char disbuf[1024];
10 m68kinst instbuf;
11 unsigned short * cur;
12 FILE * f = fopen(argv[1], "rb");
13 fseek(f, 0, SEEK_END);
14 filesize = ftell(f);
15 fseek(f, 0, SEEK_SET);
16 filebuf = malloc(filesize);
17 fread(filebuf, 2, filesize/2, f);
18 fclose(f);
19 for(cur = filebuf; cur - filebuf < (filesize/2); ++cur)
20 {
21 //printf("%x:", *cur);
22 *cur = (*cur >> 8) | (*cur << 8);
23 //printf("%x\n", *cur);
24 }
25 for(cur = filebuf; (cur - filebuf) < (filesize/2); ++cur)
26 {
27 printf("cur: %p: %x\n", cur, *cur);
28 cur = m68K_decode(cur, &instbuf);
29 m68k_disasm(&instbuf, disbuf);
30 puts(disbuf);
31 }
32 return 0;
33 }