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annotate m68k_to_x86.h @ 558:dc9f178085a0

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Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core.
author Mike Pavone <pavone@retrodev.com>
date Mon, 24 Feb 2014 01:30:16 -0800
parents acec5464fa1e
children 624dd5106060
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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_TO_X86_H_
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7 #define M68K_TO_X86_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 } x86_68k_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 uint8_t * translate_m68k(uint8_t * dst, struct m68kinst * inst, x86_68k_options * opts);
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68 uint8_t * 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_x86_68k_opts(x86_68k_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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77 #endif //M68K_TO_X86_H_
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