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Fix bug in MED mapper protection bit implementation
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Apr 2024 23:33:11 -0700
parents cb62730d5c99
children
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1 #ifndef SYSTEM_H_
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2 #define SYSTEM_H_
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3 #include <stddef.h>
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4 #include <stdint.h>
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5 #include <stdio.h>
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6 #include "flac.h"
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7 #include "zip.h"
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8
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9 typedef struct system_header system_header;
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10 typedef struct system_media system_media;
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11
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12 typedef enum {
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13 SYSTEM_UNKNOWN,
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14 SYSTEM_GENESIS,
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15 SYSTEM_GENESIS_PLAYER,
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16 SYSTEM_SEGACD,
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17 SYSTEM_SMS,
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18 SYSTEM_SMS_PLAYER,
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19 SYSTEM_JAGUAR,
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20 SYSTEM_MEDIA_PLAYER,
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21 SYSTEM_COLECOVISION,
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22 SYSTEM_PICO,
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23 SYSTEM_COPERA
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24 } system_type;
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25
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26 typedef enum {
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27 DEBUGGER_NATIVE,
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28 DEBUGGER_GDB
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29 } debugger_type;
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30
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31 enum {
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32 DEBUG_PLANE,
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33 DEBUG_VRAM,
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34 DEBUG_CRAM,
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35 DEBUG_COMPOSITE,
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36 DEBUG_OSCILLOSCOPE,
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37 DEBUG_CD_GRAPHICS,
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38 NUM_DEBUG_TYPES
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39 };
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40
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41 typedef void (*system_fun)(system_header *);
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42 typedef uint16_t (*system_fun_r16)(system_header *);
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43 typedef void (*system_str_fun)(system_header *, char *);
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44 typedef uint8_t (*system_str_fun_r8)(system_header *, char *);
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45 typedef void (*system_u32_fun)(system_header *, uint32_t);
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46 typedef void (*system_u8_fun)(system_header *, uint8_t);
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47 typedef uint8_t (*system_u8_fun_r8)(system_header *, uint8_t);
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48 typedef void (*system_u8_u8_fun)(system_header *, uint8_t, uint8_t);
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49 typedef void (*system_mabs_fun)(system_header *, uint8_t, uint16_t, uint16_t);
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50 typedef void (*system_mrel_fun)(system_header *, uint8_t, int32_t, int32_t);
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51 typedef uint8_t *(*system_ptrszt_fun_rptr8)(system_header *, size_t *);
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52 typedef void (*system_ptr8_sizet_fun)(system_header *, uint8_t *, size_t);
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53
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54 #include "arena.h"
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55 #include "romdb.h"
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56 typedef struct event_reader event_reader;
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57
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58 struct system_header {
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59 system_header *next_context;
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60 system_str_fun start_context;
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61 system_fun resume_context;
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62 system_fun load_save;
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63 system_fun persist_save;
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64 system_u8_fun_r8 load_state;
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65 system_fun request_exit;
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66 system_fun soft_reset;
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67 system_fun free_context;
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68 system_fun_r16 get_open_bus_value;
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69 system_u32_fun set_speed_percent;
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70 system_fun inc_debug_mode;
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71 system_u8_u8_fun gamepad_down;
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72 system_u8_u8_fun gamepad_up;
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73 system_u8_u8_fun mouse_down;
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74 system_u8_u8_fun mouse_up;
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75 system_mabs_fun mouse_motion_absolute;
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76 system_mrel_fun mouse_motion_relative;
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77 system_u8_fun keyboard_down;
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78 system_u8_fun keyboard_up;
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79 system_fun config_updated;
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80 system_ptrszt_fun_rptr8 serialize;
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81 system_ptr8_sizet_fun deserialize;
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82 system_str_fun start_vgm_log;
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83 system_fun stop_vgm_log;
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84 system_u8_fun toggle_debug_view;
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85 rom_info info;
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86 arena *arena;
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87 char *next_rom;
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88 char *save_dir;
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89 int enter_debugger_frames;
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90 uint8_t enter_debugger;
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91 uint8_t should_exit;
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92 uint8_t save_state;
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93 uint8_t delayed_load_slot;
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94 uint8_t has_keyboard;
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95 uint8_t vgm_logging;
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96 uint8_t force_release;
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97 debugger_type debugger_type;
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98 system_type type;
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99 };
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100
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101 typedef enum {
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102 MEDIA_CART,
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103 MEDIA_CDROM
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104 } media_type;
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105
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106 typedef enum {
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107 TRACK_AUDIO,
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108 TRACK_DATA
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109 } track_type;
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110
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111 enum {
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112 SUBCODES_NONE,
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113 SUBCODES_RAW,
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114 SUBCODES_COOKED
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115 };
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116
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117 typedef struct {
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118 FILE *f;
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119 flac_file *flac;
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120 uint32_t file_offset;
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121 uint32_t fake_pregap;
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122 uint32_t pregap_lba;
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123 uint32_t start_lba;
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124 uint32_t end_lba;
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125 uint16_t sector_bytes;
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126 uint8_t need_swap;
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127 uint8_t has_subcodes;
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128 track_type type;
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129 } track_info;
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130
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131 typedef uint8_t (*seek_fun)(system_media *media, uint32_t sector);
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132 typedef uint8_t (*read_fun)(system_media *media, uint32_t offset);
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133
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134 struct system_media {
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135 void *buffer;
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136 char *dir;
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137 char *name;
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138 char *extension;
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139 char *orig_path; //Full path before splitting and any extension manipulation
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140 system_media *chain;
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141 track_info *tracks;
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142 uint8_t *tmp_buffer;
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143 zip_file *zip;
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144 seek_fun seek;
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145 read_fun read;
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146 read_fun read_subcodes;
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147 uint32_t num_tracks;
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148 uint32_t cur_track;
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149 uint32_t size;
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150 uint32_t cur_sector;
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151 uint16_t cdrom_scramble_lsfr;
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152 media_type type;
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153 uint8_t in_fake_pregap;
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154 uint8_t byte_storage[3];
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155 };
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156
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157 #define OPT_ADDRESS_LOG (1U << 31U)
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158
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159 system_type detect_system_type(system_media *media);
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160 system_header *alloc_config_system(system_type stype, system_media *media, uint32_t opts, uint8_t force_region);
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161 system_header *alloc_config_player(system_type stype, event_reader *reader);
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162 void system_request_exit(system_header *system, uint8_t force_release);
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163 void* load_media_subfile(const system_media *media, char *path, uint32_t *sizeout);
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164
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165 #endif //SYSTEM_H_