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annotate m68k_core.h @ 572:0f32f52fc98e

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Make some small changes in trans so that it is more likely to produce the same output as mustrans when given misbehaving programs. Add lea to testcases.txt. Improve the output of comparetest.py so that known issues can easily be separated from new ones.
author Michael Pavone <pavone@retrodev.com>
date Mon, 03 Mar 2014 21:08:43 -0800
parents 76bba9ffe351
children a18e3923481e
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140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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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 #ifndef M68K_CORE_H_
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7 #define M68K_CORE_H_
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8 #include <stdint.h>
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9 #include <stdio.h>
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10 #include "backend.h"
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11 //#include "68kinst.h"
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12 struct m68kinst;
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13
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14 #define NUM_MEM_AREAS 4
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15 #define NATIVE_MAP_CHUNKS (64*1024)
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16 #define NATIVE_CHUNK_SIZE ((16 * 1024 * 1024 / NATIVE_MAP_CHUNKS)/2)
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17 #define MAX_NATIVE_SIZE 255
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18
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19 typedef void (*start_fun)(uint8_t * addr, void * context);
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20
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21 typedef struct {
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22 cpu_options gen;
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23
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24 int8_t dregs[8];
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25 int8_t aregs[8];
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26 int8_t flag_regs[5];
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27 FILE *address_log;
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28 code_ptr read_16;
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29 code_ptr write_16;
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30 code_ptr read_8;
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31 code_ptr write_8;
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32 code_ptr read_32;
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33 code_ptr write_32_lowfirst;
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34 code_ptr write_32_highfirst;
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35 code_ptr do_sync;
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36 code_ptr trap;
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37 start_fun start_context;
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38 code_ptr retrans_stub;
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39 code_ptr native_addr;
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40 code_ptr native_addr_and_sync;
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41 code_ptr get_sr;
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42 code_ptr set_sr;
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43 code_ptr set_ccr;
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44 } m68k_options;
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46 typedef struct {
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47 uint8_t flags[5];
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48 uint8_t status;
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49 uint16_t int_ack;
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50 uint32_t dregs[8];
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51 uint32_t aregs[9];
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52 uint32_t target_cycle; //cycle at which the next synchronization or interrupt occurs
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53 uint32_t current_cycle;
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54 uint32_t sync_cycle;
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55 uint32_t int_cycle;
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56 uint32_t int_num;
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57 uint16_t *mem_pointers[NUM_MEM_AREAS];
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58 void *video_context;
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59 uint16_t reserved;
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61 native_map_slot *native_code_map;
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62 void *options;
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63 uint8_t ram_code_flags[32/8];
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64 void *system;
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65 } m68k_context;
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67 void translate_m68k(m68k_options * opts, struct m68kinst * inst);
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68 void translate_m68k_stream(uint32_t address, m68k_context * context);
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69 void start_68k_context(m68k_context * context, uint32_t address);
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70 void init_m68k_opts(m68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks);
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71 void init_68k_context(m68k_context * context, native_map_slot * native_code_map, void * opts);
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72 void m68k_reset(m68k_context * context);
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73 void insert_breakpoint(m68k_context * context, uint32_t address, uint8_t * bp_handler);
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74 void remove_breakpoint(m68k_context * context, uint32_t address);
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75 m68k_context * m68k_handle_code_write(uint32_t address, m68k_context * context);
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76 uint32_t get_instruction_start(native_map_slot * native_code_map, uint32_t address);
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78 #endif //M68K_CORE_H_
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