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annotate trans.c @ 505:b7b7a1cab44a

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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
author Michael Pavone <pavone@retrodev.com>
date Mon, 06 Jan 2014 22:54:05 -0800
parents 140af5509ce7
children 8e395210f50f
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #include "68kinst.h"
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7 #include "m68k_to_x86.h"
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8 #include "mem.h"
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <string.h>
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12
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13 m68k_context * sync_components(m68k_context * context, uint32_t address)
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14 {
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15 if (context->current_cycle > 0x80000000) {
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16 context->current_cycle -= 0x80000000;
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17 }
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18 return context;
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19 }
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21 int main(int argc, char ** argv)
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22 {
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23 long filesize;
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24 unsigned short *filebuf;
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25 char disbuf[1024];
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26 unsigned short * cur;
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27 x86_68k_options opts;
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28 m68k_context context;
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29 FILE * f = fopen(argv[1], "rb");
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30 fseek(f, 0, SEEK_END);
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31 filesize = ftell(f);
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32 fseek(f, 0, SEEK_SET);
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33 filebuf = malloc(filesize > 0x400000 ? filesize : 0x400000);
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34 fread(filebuf, 2, filesize/2, f);
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35 fclose(f);
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36 for(cur = filebuf; cur - filebuf < (filesize/2); ++cur)
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37 {
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38 *cur = (*cur >> 8) | (*cur << 8);
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39 }
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40 memmap_chunk memmap[2];
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41 memset(memmap, 0, sizeof(memmap_chunk)*2);
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42 memmap[0].end = 0x400000;
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43 memmap[0].mask = 0xFFFFFF;
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44 memmap[0].flags = MMAP_READ;
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45 memmap[0].buffer = filebuf;
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46
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47 memmap[1].start = 0xE00000;
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48 memmap[1].end = 0x1000000;
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49 memmap[1].mask = 0xFFFF;
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50 memmap[1].flags = MMAP_READ | MMAP_WRITE | MMAP_CODE;
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51 memmap[1].buffer = malloc(64 * 1024);
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52 init_x86_68k_opts(&opts, memmap, 2);
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53 init_68k_context(&context, opts.native_code_map, &opts);
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54 context.mem_pointers[0] = memmap[0].buffer;
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55 context.mem_pointers[1] = memmap[1].buffer;
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56 context.target_cycle = context.sync_cycle = 0x80000000;
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57 uint32_t address;
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58 address = filebuf[2] << 16 | filebuf[3];
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59 translate_m68k_stream(address, &context);
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60 m68k_reset(&context);
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61 return 0;
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62 }
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