nkeynes@26 | 1 | /**
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nkeynes@586 | 2 | * $Id$
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nkeynes@26 | 3 | * Central switchboard for the system. This pulls all the individual modules
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nkeynes@26 | 4 | * together into some kind of coherent structure. This is also where you'd
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nkeynes@26 | 5 | * add Naomi support, if I ever get a board to play with...
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nkeynes@26 | 6 | *
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nkeynes@26 | 7 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@26 | 8 | *
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nkeynes@26 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@26 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@26 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@26 | 12 | * (at your option) any later version.
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nkeynes@26 | 13 | *
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nkeynes@26 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@26 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@26 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@26 | 17 | * GNU General Public License for more details.
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nkeynes@26 | 18 | */
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nkeynes@26 | 19 |
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nkeynes@18 | 20 | #include <errno.h>
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nkeynes@543 | 21 | #include <glib.h>
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nkeynes@669 | 22 | #include "lxdream.h"
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nkeynes@740 | 23 | #include "dream.h"
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nkeynes@2 | 24 | #include "mem.h"
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nkeynes@669 | 25 | #include "dreamcast.h"
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nkeynes@669 | 26 | #include "asic.h"
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nkeynes@669 | 27 | #include "syscall.h"
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nkeynes@669 | 28 | #include "gui.h"
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nkeynes@11 | 29 | #include "aica/aica.h"
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nkeynes@25 | 30 | #include "gdrom/ide.h"
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nkeynes@25 | 31 | #include "maple/maple.h"
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nkeynes@669 | 32 | #include "sh4/sh4.h"
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nkeynes@740 | 33 | #include "sh4/sh4core.h"
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nkeynes@15 | 34 |
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nkeynes@26 | 35 | /**
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nkeynes@26 | 36 | * Current state of the DC virtual machine
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nkeynes@26 | 37 | */
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nkeynes@543 | 38 | typedef enum { STATE_UNINIT=0, STATE_RUNNING,
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nkeynes@736 | 39 | STATE_STOPPING, STATE_STOPPED } dreamcast_state_t;
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nkeynes@736 | 40 |
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nkeynes@543 | 41 | static volatile dreamcast_state_t dreamcast_state = STATE_UNINIT;
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nkeynes@543 | 42 | static gboolean dreamcast_has_bios = FALSE;
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nkeynes@742 | 43 | static gboolean dreamcast_has_flash = FALSE;
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nkeynes@689 | 44 | static gboolean dreamcast_exit_on_stop = FALSE;
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nkeynes@543 | 45 | static gchar *dreamcast_program_name = NULL;
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nkeynes@543 | 46 | static sh4addr_t dreamcast_entry_point = 0xA0000000;
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nkeynes@26 | 47 | static uint32_t timeslice_length = DEFAULT_TIMESLICE_LENGTH;
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nkeynes@689 | 48 | static uint64_t run_time_nanosecs = 0;
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nkeynes@2 | 49 |
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nkeynes@15 | 50 | #define MAX_MODULES 32
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nkeynes@15 | 51 | static int num_modules = 0;
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nkeynes@16 | 52 | dreamcast_module_t modules[MAX_MODULES];
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nkeynes@15 | 53 |
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nkeynes@16 | 54 | /**
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nkeynes@35 | 55 | * The unknown module is used for logging files without an actual module
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nkeynes@35 | 56 | * declaration
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nkeynes@35 | 57 | */
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nkeynes@35 | 58 | struct dreamcast_module unknown_module = { "****", NULL, NULL, NULL, NULL,
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nkeynes@736 | 59 | NULL, NULL, NULL };
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nkeynes@35 | 60 |
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nkeynes@35 | 61 | /**
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nkeynes@16 | 62 | * This function is responsible for defining how all the pieces of the
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nkeynes@26 | 63 | * dreamcast actually fit together.
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nkeynes@16 | 64 | *
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nkeynes@16 | 65 | * Note currently the locations of the various MMIO pages are hard coded in
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nkeynes@16 | 66 | * the MMIO definitions - they should probably be moved here.
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nkeynes@16 | 67 | */
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nkeynes@15 | 68 | void dreamcast_configure( )
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nkeynes@15 | 69 | {
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nkeynes@265 | 70 | dreamcast_register_module( &eventq_module );
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nkeynes@16 | 71 | /* Register the memory framework */
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nkeynes@15 | 72 | dreamcast_register_module( &mem_module );
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nkeynes@16 | 73 |
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nkeynes@16 | 74 | /* Setup standard memory map */
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nkeynes@146 | 75 | mem_create_repeating_ram_region( 0x0C000000, 16 MB, MEM_REGION_MAIN, 0x01000000, 0x0F000000 );
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nkeynes@16 | 76 | mem_create_ram_region( 0x00800000, 2 MB, MEM_REGION_AUDIO );
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nkeynes@16 | 77 | mem_create_ram_region( 0x00703000, 8 KB, MEM_REGION_AUDIO_SCRATCH );
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nkeynes@16 | 78 | mem_create_ram_region( 0x05000000, 8 MB, MEM_REGION_VIDEO );
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nkeynes@543 | 79 | dreamcast_has_bios = mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
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nkeynes@736 | 80 | 0x00000000, 0x00200000, 0x89f2b1a1,
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nkeynes@736 | 81 | MEM_REGION_BIOS );
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nkeynes@146 | 82 | mem_create_ram_region( 0x00200000, 0x00020000, MEM_REGION_FLASH );
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nkeynes@450 | 83 | mem_load_block( lxdream_get_config_value(CONFIG_FLASH_PATH),
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nkeynes@736 | 84 | 0x00200000, 0x00020000 );
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nkeynes@742 | 85 | dreamcast_has_flash = TRUE;
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nkeynes@16 | 86 |
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nkeynes@16 | 87 | /* Load in the rest of the core modules */
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nkeynes@15 | 88 | dreamcast_register_module( &sh4_module );
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nkeynes@15 | 89 | dreamcast_register_module( &asic_module );
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nkeynes@15 | 90 | dreamcast_register_module( &pvr2_module );
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nkeynes@15 | 91 | dreamcast_register_module( &aica_module );
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nkeynes@15 | 92 | dreamcast_register_module( &maple_module );
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nkeynes@15 | 93 | dreamcast_register_module( &ide_module );
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nkeynes@15 | 94 | }
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nkeynes@15 | 95 |
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nkeynes@461 | 96 | void dreamcast_config_changed(void)
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nkeynes@461 | 97 | {
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nkeynes@543 | 98 | dreamcast_has_bios = mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
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nkeynes@736 | 99 | 0x00000000, 0x00200000, 0x89f2b1a1,
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nkeynes@736 | 100 | MEM_REGION_BIOS );
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nkeynes@461 | 101 | mem_load_block( lxdream_get_config_value(CONFIG_FLASH_PATH),
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nkeynes@736 | 102 | 0x00200000, 0x00020000 );
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nkeynes@461 | 103 | }
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nkeynes@461 | 104 |
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nkeynes@277 | 105 | void dreamcast_save_flash()
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nkeynes@277 | 106 | {
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nkeynes@742 | 107 | if( dreamcast_has_flash ) {
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nkeynes@742 | 108 | const char *file = lxdream_get_config_value(CONFIG_FLASH_PATH);
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nkeynes@742 | 109 | mem_save_block( file, 0x00200000, 0x00020000 );
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nkeynes@742 | 110 | }
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nkeynes@277 | 111 | }
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nkeynes@277 | 112 |
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nkeynes@71 | 113 | /**
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nkeynes@71 | 114 | * Constructs a system configuration for the AICA in standalone mode,
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nkeynes@71 | 115 | * ie sound chip only.
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nkeynes@71 | 116 | */
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nkeynes@71 | 117 | void dreamcast_configure_aica_only( )
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nkeynes@71 | 118 | {
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nkeynes@71 | 119 | dreamcast_register_module( &mem_module );
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nkeynes@71 | 120 | mem_create_ram_region( 0x00800000, 2 MB, MEM_REGION_AUDIO );
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nkeynes@71 | 121 | mem_create_ram_region( 0x00703000, 8 KB, MEM_REGION_AUDIO_SCRATCH );
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nkeynes@71 | 122 | dreamcast_register_module( &aica_module );
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nkeynes@89 | 123 | aica_enable();
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nkeynes@71 | 124 | dreamcast_state = STATE_STOPPED;
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nkeynes@71 | 125 | }
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nkeynes@71 | 126 |
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nkeynes@15 | 127 | void dreamcast_register_module( dreamcast_module_t module )
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nkeynes@15 | 128 | {
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nkeynes@15 | 129 | modules[num_modules++] = module;
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nkeynes@16 | 130 | if( module->init != NULL )
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nkeynes@736 | 131 | module->init();
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nkeynes@15 | 132 | }
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nkeynes@15 | 133 |
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nkeynes@689 | 134 | void dreamcast_set_run_time( uint32_t secs, uint32_t nanosecs )
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nkeynes@689 | 135 | {
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nkeynes@689 | 136 | run_time_nanosecs = (((uint64_t)secs) * 1000000000) + nanosecs;
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nkeynes@689 | 137 | }
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nkeynes@689 | 138 |
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nkeynes@689 | 139 | void dreamcast_set_exit_on_stop( gboolean flag )
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nkeynes@689 | 140 | {
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nkeynes@689 | 141 | dreamcast_exit_on_stop = flag;
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nkeynes@689 | 142 | }
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nkeynes@15 | 143 |
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nkeynes@2 | 144 | void dreamcast_init( void )
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nkeynes@2 | 145 | {
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nkeynes@15 | 146 | dreamcast_configure();
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nkeynes@23 | 147 | dreamcast_state = STATE_STOPPED;
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nkeynes@2 | 148 | }
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nkeynes@2 | 149 |
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nkeynes@2 | 150 | void dreamcast_reset( void )
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nkeynes@2 | 151 | {
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nkeynes@766 | 152 | sh4_core_exit(CORE_EXIT_SYSRESET);
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nkeynes@15 | 153 | int i;
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nkeynes@15 | 154 | for( i=0; i<num_modules; i++ ) {
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nkeynes@736 | 155 | if( modules[i]->reset != NULL )
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nkeynes@736 | 156 | modules[i]->reset();
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nkeynes@15 | 157 | }
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nkeynes@2 | 158 | }
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nkeynes@2 | 159 |
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nkeynes@23 | 160 | void dreamcast_run( void )
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nkeynes@15 | 161 | {
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nkeynes@15 | 162 | int i;
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nkeynes@736 | 163 |
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nkeynes@23 | 164 | if( dreamcast_state != STATE_RUNNING ) {
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nkeynes@689 | 165 | for( i=0; i<num_modules; i++ ) {
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nkeynes@689 | 166 | if( modules[i]->start != NULL )
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nkeynes@689 | 167 | modules[i]->start();
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nkeynes@689 | 168 | }
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nkeynes@15 | 169 | }
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nkeynes@736 | 170 |
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nkeynes@23 | 171 | dreamcast_state = STATE_RUNNING;
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nkeynes@736 | 172 |
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nkeynes@689 | 173 | if( run_time_nanosecs != 0 ) {
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nkeynes@689 | 174 | while( dreamcast_state == STATE_RUNNING ) {
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nkeynes@689 | 175 | uint32_t time_to_run = timeslice_length;
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nkeynes@689 | 176 | if( run_time_nanosecs < time_to_run ) {
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nkeynes@689 | 177 | time_to_run = (uint32_t)run_time_nanosecs;
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nkeynes@689 | 178 | }
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nkeynes@736 | 179 |
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nkeynes@689 | 180 | for( i=0; i<num_modules; i++ ) {
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nkeynes@689 | 181 | if( modules[i]->run_time_slice != NULL )
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nkeynes@689 | 182 | time_to_run = modules[i]->run_time_slice( time_to_run );
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nkeynes@689 | 183 | }
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nkeynes@736 | 184 |
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nkeynes@689 | 185 | if( run_time_nanosecs > time_to_run ) {
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nkeynes@689 | 186 | run_time_nanosecs -= time_to_run;
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nkeynes@689 | 187 | } else {
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nkeynes@689 | 188 | run_time_nanosecs = 0; // Finished
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nkeynes@689 | 189 | break;
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nkeynes@689 | 190 | }
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nkeynes@689 | 191 | }
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nkeynes@689 | 192 | } else {
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nkeynes@689 | 193 | while( dreamcast_state == STATE_RUNNING ) {
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nkeynes@689 | 194 | int time_to_run = timeslice_length;
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nkeynes@689 | 195 | for( i=0; i<num_modules; i++ ) {
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nkeynes@689 | 196 | if( modules[i]->run_time_slice != NULL )
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nkeynes@689 | 197 | time_to_run = modules[i]->run_time_slice( time_to_run );
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nkeynes@689 | 198 | }
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nkeynes@23 | 199 |
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nkeynes@689 | 200 | }
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nkeynes@23 | 201 | }
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nkeynes@23 | 202 |
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nkeynes@15 | 203 | for( i=0; i<num_modules; i++ ) {
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nkeynes@689 | 204 | if( modules[i]->stop != NULL )
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nkeynes@689 | 205 | modules[i]->stop();
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nkeynes@15 | 206 | }
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nkeynes@23 | 207 | dreamcast_state = STATE_STOPPED;
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nkeynes@736 | 208 |
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nkeynes@689 | 209 | if( dreamcast_exit_on_stop ) {
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nkeynes@689 | 210 | dreamcast_shutdown();
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nkeynes@689 | 211 | exit(0);
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nkeynes@372 | 212 | }
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nkeynes@372 | 213 | }
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nkeynes@372 | 214 |
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nkeynes@23 | 215 | void dreamcast_stop( void )
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nkeynes@23 | 216 | {
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nkeynes@740 | 217 | sh4_core_exit(CORE_EXIT_HALT); // returns only if not inside SH4 core
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nkeynes@23 | 218 | if( dreamcast_state == STATE_RUNNING )
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nkeynes@736 | 219 | dreamcast_state = STATE_STOPPING;
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nkeynes@23 | 220 | }
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nkeynes@17 | 221 |
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nkeynes@277 | 222 | void dreamcast_shutdown()
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nkeynes@277 | 223 | {
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nkeynes@727 | 224 | // Don't do a dreamcast_stop - if we're calling this out of SH4 code,
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nkeynes@727 | 225 | // it's a shutdown-and-quit event
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nkeynes@727 | 226 | if( dreamcast_state == STATE_RUNNING )
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nkeynes@727 | 227 | dreamcast_state = STATE_STOPPING;
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nkeynes@277 | 228 | dreamcast_save_flash();
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nkeynes@671 | 229 | #ifdef ENABLE_SH4STATS
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nkeynes@671 | 230 | sh4_stats_print(stdout);
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nkeynes@671 | 231 | #endif
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nkeynes@277 | 232 | }
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nkeynes@277 | 233 |
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nkeynes@543 | 234 | void dreamcast_program_loaded( const gchar *name, sh4addr_t entry_point )
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nkeynes@543 | 235 | {
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nkeynes@543 | 236 | if( dreamcast_program_name != NULL ) {
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nkeynes@543 | 237 | g_free(dreamcast_program_name);
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nkeynes@543 | 238 | }
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nkeynes@543 | 239 | dreamcast_program_name = g_strdup(name);
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nkeynes@543 | 240 | dreamcast_entry_point = entry_point;
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nkeynes@543 | 241 | sh4_set_pc(entry_point);
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nkeynes@586 | 242 | bios_install();
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nkeynes@543 | 243 | dcload_install();
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nkeynes@543 | 244 | gui_update_state();
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nkeynes@543 | 245 | }
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nkeynes@543 | 246 |
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nkeynes@26 | 247 | gboolean dreamcast_is_running( void )
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nkeynes@26 | 248 | {
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nkeynes@26 | 249 | return dreamcast_state == STATE_RUNNING;
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nkeynes@26 | 250 | }
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nkeynes@26 | 251 |
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nkeynes@543 | 252 | gboolean dreamcast_can_run(void)
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nkeynes@543 | 253 | {
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nkeynes@543 | 254 | return dreamcast_state != STATE_UNINIT &&
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nkeynes@736 | 255 | (dreamcast_has_bios || dreamcast_program_name != NULL);
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nkeynes@543 | 256 | }
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nkeynes@543 | 257 |
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nkeynes@26 | 258 | /********************************* Save States *****************************/
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nkeynes@26 | 259 |
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nkeynes@26 | 260 | struct save_state_header {
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nkeynes@26 | 261 | char magic[16];
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nkeynes@26 | 262 | uint32_t version;
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nkeynes@26 | 263 | uint32_t module_count;
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nkeynes@26 | 264 | };
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nkeynes@26 | 265 |
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nkeynes@477 | 266 | struct chunk_header {
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nkeynes@477 | 267 | char marker[4]; /* Always BLCK */
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nkeynes@477 | 268 | char name[8]; /* Block (module) name */
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nkeynes@477 | 269 | uint32_t block_length;
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nkeynes@477 | 270 | };
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nkeynes@477 | 271 |
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nkeynes@477 | 272 | /**
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nkeynes@477 | 273 | * Check the save state header to ensure that it is a valid, supported
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nkeynes@477 | 274 | * file.
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nkeynes@477 | 275 | * @return the number of blocks following, or 0 if the file is invalid.
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nkeynes@477 | 276 | */
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nkeynes@477 | 277 | int dreamcast_read_save_state_header( FILE *f )
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nkeynes@477 | 278 | {
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nkeynes@477 | 279 | struct save_state_header header;
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nkeynes@477 | 280 | if( fread( &header, sizeof(header), 1, f ) != 1 ) {
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nkeynes@736 | 281 | return 0;
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nkeynes@477 | 282 | }
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nkeynes@477 | 283 | if( strncmp( header.magic, DREAMCAST_SAVE_MAGIC, 16 ) != 0 ) {
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nkeynes@736 | 284 | ERROR( "Not a %s save state file", APP_NAME );
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nkeynes@736 | 285 | return 0;
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nkeynes@477 | 286 | }
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nkeynes@477 | 287 | if( header.version != DREAMCAST_SAVE_VERSION ) {
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nkeynes@736 | 288 | ERROR( "%s save state version not supported", APP_NAME );
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nkeynes@736 | 289 | return 0;
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nkeynes@477 | 290 | }
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nkeynes@477 | 291 | if( header.module_count > MAX_MODULES ) {
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nkeynes@736 | 292 | ERROR( "%s save state is corrupted (bad module count)", APP_NAME );
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nkeynes@736 | 293 | return 0;
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nkeynes@477 | 294 | }
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nkeynes@477 | 295 | return header.module_count;
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nkeynes@477 | 296 | }
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nkeynes@477 | 297 |
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nkeynes@477 | 298 | int dreamcast_write_chunk_header( const gchar *name, uint32_t length, FILE *f )
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nkeynes@477 | 299 | {
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nkeynes@477 | 300 | struct chunk_header head;
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nkeynes@477 | 301 |
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nkeynes@477 | 302 | memcpy( head.marker, "BLCK", 4 );
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nkeynes@477 | 303 | memset( head.name, 0, 8 );
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nkeynes@477 | 304 | memcpy( head.name, name, strlen(name) );
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nkeynes@477 | 305 | head.block_length = length;
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nkeynes@477 | 306 | return fwrite( &head, sizeof(head), 1, f );
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nkeynes@477 | 307 | }
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nkeynes@477 | 308 |
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nkeynes@477 | 309 |
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nkeynes@477 | 310 | frame_buffer_t dreamcast_load_preview( const gchar *filename )
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nkeynes@477 | 311 | {
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nkeynes@477 | 312 | int i;
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nkeynes@477 | 313 | FILE *f = fopen( filename, "r" );
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nkeynes@477 | 314 | if( f == NULL ) return NULL;
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nkeynes@736 | 315 |
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nkeynes@477 | 316 | int module_count = dreamcast_read_save_state_header(f);
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nkeynes@477 | 317 | if( module_count <= 0 ) {
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nkeynes@736 | 318 | fclose(f);
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nkeynes@736 | 319 | return NULL;
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nkeynes@477 | 320 | }
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nkeynes@477 | 321 | for( i=0; i<module_count; i++ ) {
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nkeynes@736 | 322 | struct chunk_header head;
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nkeynes@736 | 323 | if( fread( &head, sizeof(head), 1, f ) != 1 ) {
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nkeynes@736 | 324 | fclose(f);
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nkeynes@736 | 325 | return NULL;
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nkeynes@736 | 326 | }
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nkeynes@736 | 327 | if( memcmp("BLCK", head.marker, 4) != 0 ) {
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nkeynes@736 | 328 | fclose(f);
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nkeynes@736 | 329 | return NULL;
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nkeynes@736 | 330 | }
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nkeynes@477 | 331 |
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nkeynes@736 | 332 | if( strcmp("PVR2", head.name) == 0 ) {
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nkeynes@736 | 333 | uint32_t buf_count;
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nkeynes@736 | 334 | int has_front;
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nkeynes@736 | 335 | fread( &buf_count, sizeof(buf_count), 1, f );
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nkeynes@736 | 336 | fread( &has_front, sizeof(has_front), 1, f );
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nkeynes@736 | 337 | if( buf_count != 0 && has_front ) {
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nkeynes@736 | 338 | frame_buffer_t result = read_png_from_stream(f);
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nkeynes@736 | 339 | fclose(f);
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nkeynes@736 | 340 | return result;
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nkeynes@736 | 341 | }
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nkeynes@736 | 342 | break;
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nkeynes@736 | 343 | } else {
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nkeynes@736 | 344 | fseek( f, head.block_length, SEEK_CUR );
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nkeynes@736 | 345 | }
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nkeynes@477 | 346 | }
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nkeynes@477 | 347 | return NULL;
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nkeynes@477 | 348 | }
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nkeynes@477 | 349 |
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nkeynes@18 | 350 | int dreamcast_load_state( const gchar *filename )
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nkeynes@15 | 351 | {
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nkeynes@17 | 352 | int i,j;
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nkeynes@477 | 353 | int module_count;
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nkeynes@17 | 354 | int have_read[MAX_MODULES];
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nkeynes@18 | 355 |
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nkeynes@477 | 356 | FILE *f = fopen( filename, "r" );
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nkeynes@18 | 357 | if( f == NULL ) return errno;
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nkeynes@15 | 358 |
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nkeynes@477 | 359 | module_count = dreamcast_read_save_state_header(f);
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nkeynes@477 | 360 | if( module_count <= 0 ) {
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nkeynes@736 | 361 | fclose(f);
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nkeynes@736 | 362 | return 1;
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nkeynes@15 | 363 | }
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nkeynes@477 | 364 |
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nkeynes@17 | 365 | for( i=0; i<MAX_MODULES; i++ ) {
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nkeynes@736 | 366 | have_read[i] = 0;
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nkeynes@15 | 367 | }
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nkeynes@15 | 368 |
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nkeynes@477 | 369 | for( i=0; i<module_count; i++ ) {
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nkeynes@736 | 370 | struct chunk_header chunk;
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nkeynes@736 | 371 | fread( &chunk, sizeof(chunk), 1, f );
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nkeynes@736 | 372 | if( strncmp(chunk.marker, "BLCK", 4) != 0 ) {
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nkeynes@736 | 373 | ERROR( "%s save state is corrupted (missing block header %d)", APP_NAME, i );
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nkeynes@736 | 374 | fclose(f);
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nkeynes@736 | 375 | return 2;
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nkeynes@736 | 376 | }
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nkeynes@736 | 377 |
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nkeynes@736 | 378 | /* Find the matching module by name */
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nkeynes@736 | 379 | for( j=0; j<num_modules; j++ ) {
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nkeynes@736 | 380 | if( strcmp(modules[j]->name,chunk.name) == 0 ) {
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nkeynes@736 | 381 | have_read[j] = 1;
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nkeynes@736 | 382 | if( modules[j]->load == NULL ) {
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nkeynes@736 | 383 | ERROR( "%s save state is corrupted (no loader for %s)", APP_NAME, modules[j]->name );
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nkeynes@736 | 384 | fclose(f);
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nkeynes@736 | 385 | return 2;
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nkeynes@736 | 386 | } else if( modules[j]->load(f) != 0 ) {
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nkeynes@736 | 387 | ERROR( "%s save state is corrupted (%s failed)", APP_NAME, modules[j]->name );
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nkeynes@736 | 388 | fclose(f);
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nkeynes@736 | 389 | return 2;
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nkeynes@736 | 390 | }
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nkeynes@736 | 391 | break;
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nkeynes@736 | 392 | }
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nkeynes@736 | 393 | }
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nkeynes@736 | 394 | if( j == num_modules ) {
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nkeynes@736 | 395 | fclose(f);
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nkeynes@736 | 396 | ERROR( "%s save state contains unrecognized section", APP_NAME );
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nkeynes@736 | 397 | return 2;
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nkeynes@736 | 398 | }
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nkeynes@17 | 399 | }
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nkeynes@736 | 400 |
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nkeynes@17 | 401 | /* Any modules that we didn't load - reset to the default state.
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nkeynes@17 | 402 | * (ie it's not an error to skip a module if you don't actually
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nkeynes@17 | 403 | * care about its state).
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nkeynes@17 | 404 | */
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nkeynes@17 | 405 | for( j=0; j<num_modules; j++ ) {
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nkeynes@736 | 406 | if( have_read[j] == 0 && modules[j]->reset != NULL ) {
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nkeynes@736 | 407 | modules[j]->reset();
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nkeynes@736 | 408 | }
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nkeynes@15 | 409 | }
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nkeynes@18 | 410 | fclose(f);
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nkeynes@18 | 411 | INFO( "Save state read from %s", filename );
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nkeynes@422 | 412 | return 0;
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nkeynes@15 | 413 | }
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nkeynes@15 | 414 |
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nkeynes@18 | 415 | int dreamcast_save_state( const gchar *filename )
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nkeynes@15 | 416 | {
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nkeynes@15 | 417 | int i;
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nkeynes@18 | 418 | FILE *f;
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nkeynes@15 | 419 | struct save_state_header header;
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nkeynes@736 | 420 |
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nkeynes@18 | 421 | f = fopen( filename, "w" );
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nkeynes@18 | 422 | if( f == NULL )
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nkeynes@736 | 423 | return errno;
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nkeynes@15 | 424 | strcpy( header.magic, DREAMCAST_SAVE_MAGIC );
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nkeynes@15 | 425 | header.version = DREAMCAST_SAVE_VERSION;
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nkeynes@18 | 426 | header.module_count = 0;
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nkeynes@18 | 427 |
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nkeynes@18 | 428 | for( i=0; i<num_modules; i++ ) {
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nkeynes@736 | 429 | if( modules[i]->save != NULL )
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nkeynes@736 | 430 | header.module_count++;
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nkeynes@18 | 431 | }
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nkeynes@15 | 432 | fwrite( &header, sizeof(header), 1, f );
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nkeynes@15 | 433 | for( i=0; i<num_modules; i++ ) {
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nkeynes@736 | 434 | if( modules[i]->save != NULL ) {
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nkeynes@736 | 435 | uint32_t blocklen, posn1, posn2;
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nkeynes@736 | 436 | dreamcast_write_chunk_header( modules[i]->name, 0, f );
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nkeynes@736 | 437 | posn1 = ftell(f);
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nkeynes@736 | 438 | modules[i]->save(f);
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nkeynes@736 | 439 | posn2 = ftell(f);
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nkeynes@736 | 440 | blocklen = posn2 - posn1;
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nkeynes@736 | 441 | fseek( f, posn1-4, SEEK_SET );
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nkeynes@736 | 442 | fwrite( &blocklen, sizeof(blocklen), 1, f );
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nkeynes@736 | 443 | fseek( f, posn2, SEEK_SET );
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nkeynes@736 | 444 | }
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nkeynes@15 | 445 | }
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nkeynes@18 | 446 | fclose( f );
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nkeynes@18 | 447 | INFO( "Save state written to %s", filename );
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nkeynes@422 | 448 | return 0;
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nkeynes@15 | 449 | }
|
nkeynes@15 | 450 |
|