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annotate trans.c @ 567:8e395210f50f

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Refactor gen_x86 to use an interface more like gen_arm and to remove the need for the caller to decide whether an 8-bit or 32-bit displacement is needed in the rdisp functions. Update m68k_to_x86 to use the new version of the gen_x86 functions and do some minor refactoring there in the process
author Michael Pavone <pavone@retrodev.com>
date Sun, 02 Mar 2014 14:45:36 -0800
parents 140af5509ce7
children 9b7fcf748be0
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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.gen.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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