filename | src/mem.c |
changeset | 986:5090104b0963 |
prev | 975:007bf7eb944f |
next | 1065:bc1cc0c54917 |
author | nkeynes |
date | Sat Jun 13 07:12:51 2009 +0000 (14 years ago) |
permissions | -rw-r--r-- |
last change | Load plugins from the directory containing the executable first if they're there - simplifies development testing. Add dummy plugin for easy identification of the plugin directory |
file | annotate | diff | log | raw |
nkeynes@10 | 1 | /** |
nkeynes@586 | 2 | * $Id$ |
nkeynes@10 | 3 | * mem.c is responsible for creating and maintaining the overall system memory |
nkeynes@10 | 4 | * map, as visible from the SH4 processor. |
nkeynes@10 | 5 | * |
nkeynes@10 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@10 | 7 | * |
nkeynes@10 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@10 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@10 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@10 | 11 | * (at your option) any later version. |
nkeynes@10 | 12 | * |
nkeynes@10 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@10 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@10 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@10 | 16 | * GNU General Public License for more details. |
nkeynes@10 | 17 | */ |
nkeynes@35 | 18 | #define MODULE mem_module |
nkeynes@10 | 19 | |
nkeynes@488 | 20 | #include <sys/types.h> |
nkeynes@10 | 21 | #include <sys/mman.h> |
nkeynes@19 | 22 | #include <sys/stat.h> |
nkeynes@586 | 23 | #include <glib/gstrfuncs.h> |
nkeynes@10 | 24 | #include <assert.h> |
nkeynes@10 | 25 | #include <stdint.h> |
nkeynes@10 | 26 | #include <stdlib.h> |
nkeynes@10 | 27 | #include <stdio.h> |
nkeynes@10 | 28 | #include <unistd.h> |
nkeynes@10 | 29 | #include <fcntl.h> |
nkeynes@10 | 30 | #include <errno.h> |
nkeynes@10 | 31 | #include <string.h> |
nkeynes@10 | 32 | #include <zlib.h> |
nkeynes@10 | 33 | #include "dream.h" |
nkeynes@10 | 34 | #include "mem.h" |
nkeynes@10 | 35 | #include "mmio.h" |
nkeynes@10 | 36 | #include "dreamcast.h" |
nkeynes@10 | 37 | |
nkeynes@953 | 38 | #ifndef PAGE_SIZE |
nkeynes@953 | 39 | #define PAGE_SIZE 4096 |
nkeynes@953 | 40 | #endif |
nkeynes@953 | 41 | |
nkeynes@502 | 42 | sh4ptr_t *page_map = NULL; |
nkeynes@953 | 43 | mem_region_fn_t *ext_address_space = NULL; |
nkeynes@953 | 44 | |
nkeynes@953 | 45 | extern struct mem_region_fn mem_region_unmapped; |
nkeynes@10 | 46 | |
nkeynes@968 | 47 | static int mem_load(FILE *f); |
nkeynes@968 | 48 | static void mem_save(FILE *f); |
nkeynes@15 | 49 | struct dreamcast_module mem_module = |
nkeynes@736 | 50 | { "MEM", mem_init, mem_reset, NULL, NULL, NULL, mem_save, mem_load }; |
nkeynes@15 | 51 | |
nkeynes@10 | 52 | struct mem_region mem_rgn[MAX_MEM_REGIONS]; |
nkeynes@10 | 53 | struct mmio_region *io_rgn[MAX_IO_REGIONS]; |
nkeynes@10 | 54 | struct mmio_region *P4_io[4096]; |
nkeynes@10 | 55 | |
nkeynes@674 | 56 | uint32_t num_io_rgns = 0, num_mem_rgns = 0; |
nkeynes@10 | 57 | |
nkeynes@953 | 58 | DEFINE_HOOK( mem_page_remapped_hook, mem_page_remapped_hook_t ); |
nkeynes@953 | 59 | static void mem_page_remapped( sh4addr_t addr, mem_region_fn_t fn ) |
nkeynes@953 | 60 | { |
nkeynes@953 | 61 | CALL_HOOKS( mem_page_remapped_hook, addr, fn ); |
nkeynes@953 | 62 | } |
nkeynes@953 | 63 | |
nkeynes@953 | 64 | /********************* The "unmapped" address space ********************/ |
nkeynes@953 | 65 | /* Always reads as 0, writes have no effect */ |
nkeynes@953 | 66 | int32_t FASTCALL unmapped_read_long( sh4addr_t addr ) |
nkeynes@953 | 67 | { |
nkeynes@953 | 68 | return 0; |
nkeynes@953 | 69 | } |
nkeynes@953 | 70 | void FASTCALL unmapped_write_long( sh4addr_t addr, uint32_t val ) |
nkeynes@953 | 71 | { |
nkeynes@953 | 72 | } |
nkeynes@953 | 73 | void FASTCALL unmapped_read_burst( unsigned char *dest, sh4addr_t addr ) |
nkeynes@953 | 74 | { |
nkeynes@953 | 75 | memset( dest, 0, 32 ); |
nkeynes@953 | 76 | } |
nkeynes@953 | 77 | void FASTCALL unmapped_write_burst( sh4addr_t addr, unsigned char *src ) |
nkeynes@953 | 78 | { |
nkeynes@953 | 79 | } |
nkeynes@953 | 80 | |
nkeynes@953 | 81 | void FASTCALL unmapped_prefetch( sh4addr_t addr ) |
nkeynes@953 | 82 | { |
nkeynes@953 | 83 | /* No effect */ |
nkeynes@953 | 84 | } |
nkeynes@953 | 85 | |
nkeynes@953 | 86 | struct mem_region_fn mem_region_unmapped = { |
nkeynes@953 | 87 | unmapped_read_long, unmapped_write_long, |
nkeynes@953 | 88 | unmapped_read_long, unmapped_write_long, |
nkeynes@953 | 89 | unmapped_read_long, unmapped_write_long, |
nkeynes@953 | 90 | unmapped_read_burst, unmapped_write_burst, |
nkeynes@975 | 91 | unmapped_prefetch, unmapped_read_long }; |
nkeynes@953 | 92 | |
nkeynes@10 | 93 | void *mem_alloc_pages( int n ) |
nkeynes@10 | 94 | { |
nkeynes@10 | 95 | void *mem = mmap( NULL, n * 4096, |
nkeynes@736 | 96 | PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0 ); |
nkeynes@10 | 97 | if( mem == MAP_FAILED ) { |
nkeynes@10 | 98 | ERROR( "Memory allocation failure! (%s)", strerror(errno) ); |
nkeynes@10 | 99 | return NULL; |
nkeynes@10 | 100 | } |
nkeynes@10 | 101 | return mem; |
nkeynes@10 | 102 | } |
nkeynes@10 | 103 | |
nkeynes@953 | 104 | void mem_unprotect( void *region, uint32_t size ) |
nkeynes@953 | 105 | { |
nkeynes@953 | 106 | /* Force page alignment */ |
nkeynes@953 | 107 | uintptr_t i = (uintptr_t)region; |
nkeynes@953 | 108 | uintptr_t mask = ~(PAGE_SIZE-1); |
nkeynes@953 | 109 | void *ptr = (void *)(i & mask); |
nkeynes@968 | 110 | size_t len = (i & (PAGE_SIZE-1)) + size; |
nkeynes@953 | 111 | len = (len + (PAGE_SIZE-1)) & mask; |
nkeynes@953 | 112 | |
nkeynes@953 | 113 | int status = mprotect( ptr, len, PROT_READ|PROT_WRITE|PROT_EXEC ); |
nkeynes@953 | 114 | assert( status == 0 ); |
nkeynes@953 | 115 | } |
nkeynes@10 | 116 | |
nkeynes@10 | 117 | void mem_init( void ) |
nkeynes@10 | 118 | { |
nkeynes@953 | 119 | int i; |
nkeynes@953 | 120 | mem_region_fn_t *ptr; |
nkeynes@986 | 121 | page_map = (sh4ptr_t *)mmap( NULL, sizeof(sh4ptr_t) * LXDREAM_PAGE_TABLE_ENTRIES, |
nkeynes@736 | 122 | PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0 ); |
nkeynes@10 | 123 | if( page_map == MAP_FAILED ) { |
nkeynes@953 | 124 | FATAL( "Unable to allocate page map! (%s)", strerror(errno) ); |
nkeynes@953 | 125 | } |
nkeynes@953 | 126 | memset( page_map, 0, sizeof(sh4ptr_t) * LXDREAM_PAGE_TABLE_ENTRIES ); |
nkeynes@953 | 127 | |
nkeynes@986 | 128 | ext_address_space = (mem_region_fn_t *) mmap( NULL, sizeof(mem_region_fn_t) * LXDREAM_PAGE_TABLE_ENTRIES, |
nkeynes@953 | 129 | PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0 ); |
nkeynes@953 | 130 | if( ext_address_space == MAP_FAILED ) { |
nkeynes@953 | 131 | FATAL( "Unable to allocate external memory map (%s)", strerror(errno) ); |
nkeynes@10 | 132 | } |
nkeynes@10 | 133 | |
nkeynes@953 | 134 | for( ptr = ext_address_space, i = LXDREAM_PAGE_TABLE_ENTRIES; i > 0; ptr++, i-- ) { |
nkeynes@953 | 135 | *ptr = &mem_region_unmapped; |
nkeynes@953 | 136 | } |
nkeynes@10 | 137 | } |
nkeynes@10 | 138 | |
nkeynes@10 | 139 | void mem_reset( void ) |
nkeynes@10 | 140 | { |
nkeynes@10 | 141 | /* Restore all mmio registers to their initial settings */ |
nkeynes@10 | 142 | int i, j; |
nkeynes@10 | 143 | for( i=1; i<num_io_rgns; i++ ) { |
nkeynes@10 | 144 | for( j=0; io_rgn[i]->ports[j].id != NULL; j++ ) { |
nkeynes@10 | 145 | if( io_rgn[i]->ports[j].def_val != UNDEFINED && |
nkeynes@736 | 146 | io_rgn[i]->ports[j].def_val != *io_rgn[i]->ports[j].val ) { |
nkeynes@953 | 147 | io_rgn[i]->fn.write_long( io_rgn[i]->ports[j].offset, |
nkeynes@736 | 148 | io_rgn[i]->ports[j].def_val ); |
nkeynes@10 | 149 | } |
nkeynes@10 | 150 | } |
nkeynes@10 | 151 | } |
nkeynes@10 | 152 | } |
nkeynes@10 | 153 | |
nkeynes@968 | 154 | static void mem_save( FILE *f ) |
nkeynes@17 | 155 | { |
nkeynes@953 | 156 | int i, num_ram_regions = 0; |
nkeynes@17 | 157 | uint32_t len; |
nkeynes@736 | 158 | |
nkeynes@953 | 159 | /* All RAM regions (ROM and non-memory regions don't need to be saved) |
nkeynes@953 | 160 | * Flash is questionable - for now we save it too */ |
nkeynes@17 | 161 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@953 | 162 | if( mem_rgn[i].flags == MEM_FLAG_RAM ) { |
nkeynes@953 | 163 | num_ram_regions++; |
nkeynes@953 | 164 | } |
nkeynes@953 | 165 | } |
nkeynes@953 | 166 | fwrite( &num_ram_regions, sizeof(num_ram_regions), 1, f ); |
nkeynes@953 | 167 | |
nkeynes@953 | 168 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@953 | 169 | if( mem_rgn[i].flags == MEM_FLAG_RAM ) { |
nkeynes@953 | 170 | fwrite_string( mem_rgn[i].name, f ); |
nkeynes@953 | 171 | fwrite( &mem_rgn[i].base, sizeof(uint32_t), 1, f ); |
nkeynes@953 | 172 | fwrite( &mem_rgn[i].flags, sizeof(uint32_t), 1, f ); |
nkeynes@953 | 173 | fwrite( &mem_rgn[i].size, sizeof(uint32_t), 1, f ); |
nkeynes@736 | 174 | fwrite_gzip( mem_rgn[i].mem, mem_rgn[i].size, 1, f ); |
nkeynes@953 | 175 | } |
nkeynes@17 | 176 | } |
nkeynes@17 | 177 | |
nkeynes@17 | 178 | /* All MMIO regions */ |
nkeynes@17 | 179 | fwrite( &num_io_rgns, sizeof(num_io_rgns), 1, f ); |
nkeynes@17 | 180 | for( i=0; i<num_io_rgns; i++ ) { |
nkeynes@736 | 181 | fwrite_string( io_rgn[i]->id, f ); |
nkeynes@736 | 182 | fwrite( &io_rgn[i]->base, sizeof( uint32_t ), 1, f ); |
nkeynes@736 | 183 | len = 4096; |
nkeynes@736 | 184 | fwrite( &len, sizeof(len), 1, f ); |
nkeynes@736 | 185 | fwrite_gzip( io_rgn[i]->mem, len, 1, f ); |
nkeynes@17 | 186 | } |
nkeynes@17 | 187 | } |
nkeynes@17 | 188 | |
nkeynes@968 | 189 | static int mem_load( FILE *f ) |
nkeynes@17 | 190 | { |
nkeynes@17 | 191 | char tmp[64]; |
nkeynes@17 | 192 | uint32_t len; |
nkeynes@18 | 193 | uint32_t base, size; |
nkeynes@510 | 194 | uint32_t flags; |
nkeynes@953 | 195 | int i, j; |
nkeynes@953 | 196 | int mem_region_loaded[MAX_MEM_REGIONS]; |
nkeynes@17 | 197 | |
nkeynes@953 | 198 | /* All RAM regions */ |
nkeynes@953 | 199 | memset( mem_region_loaded, 0, sizeof(mem_region_loaded) ); |
nkeynes@18 | 200 | fread( &len, sizeof(len), 1, f ); |
nkeynes@18 | 201 | for( i=0; i<len; i++ ) { |
nkeynes@736 | 202 | fread_string( tmp, sizeof(tmp), f ); |
nkeynes@953 | 203 | |
nkeynes@953 | 204 | for( j=0; j<num_mem_rgns; j++ ) { |
nkeynes@953 | 205 | if( strcasecmp( mem_rgn[j].name, tmp ) == 0 ) { |
nkeynes@953 | 206 | fread( &base, sizeof(base), 1, f ); |
nkeynes@953 | 207 | fread( &flags, sizeof(flags), 1, f ); |
nkeynes@953 | 208 | fread( &size, sizeof(size), 1, f ); |
nkeynes@953 | 209 | if( base != mem_rgn[j].base || |
nkeynes@953 | 210 | flags != mem_rgn[j].flags || |
nkeynes@953 | 211 | size != mem_rgn[j].size ) { |
nkeynes@953 | 212 | ERROR( "Bad memory block %d %s (not mapped to expected region)", i, tmp ); |
nkeynes@953 | 213 | return -1; |
nkeynes@953 | 214 | } |
nkeynes@953 | 215 | if( flags != MEM_FLAG_RAM ) { |
nkeynes@953 | 216 | ERROR( "Unexpected memory block %d %s (Not a RAM region)", i, tmp ); |
nkeynes@953 | 217 | return -1; |
nkeynes@953 | 218 | } |
nkeynes@953 | 219 | fread_gzip( mem_rgn[j].mem, size, 1, f ); |
nkeynes@953 | 220 | mem_region_loaded[j] = 1; |
nkeynes@959 | 221 | break; |
nkeynes@953 | 222 | } |
nkeynes@953 | 223 | } |
nkeynes@953 | 224 | } |
nkeynes@953 | 225 | /* Make sure we got all the memory regions we expected */ |
nkeynes@953 | 226 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@953 | 227 | if( mem_rgn[i].flags == MEM_FLAG_RAM && |
nkeynes@953 | 228 | mem_region_loaded[i] == 0 ) { |
nkeynes@953 | 229 | ERROR( "Missing memory block %s (not found in save state)", mem_rgn[i].name ); |
nkeynes@736 | 230 | return -1; |
nkeynes@736 | 231 | } |
nkeynes@18 | 232 | } |
nkeynes@18 | 233 | |
nkeynes@18 | 234 | /* All MMIO regions */ |
nkeynes@18 | 235 | fread( &len, sizeof(len), 1, f ); |
nkeynes@953 | 236 | if( len != num_io_rgns ) { |
nkeynes@953 | 237 | ERROR( "Unexpected IO region count %d (expected %d)", len, num_io_rgns ); |
nkeynes@736 | 238 | return -1; |
nkeynes@953 | 239 | } |
nkeynes@953 | 240 | |
nkeynes@18 | 241 | for( i=0; i<len; i++ ) { |
nkeynes@736 | 242 | fread_string( tmp, sizeof(tmp), f ); |
nkeynes@736 | 243 | fread( &base, sizeof(base), 1, f ); |
nkeynes@736 | 244 | fread( &size, sizeof(size), 1, f ); |
nkeynes@736 | 245 | if( strcmp( io_rgn[i]->id, tmp ) != 0 || |
nkeynes@736 | 246 | base != io_rgn[i]->base || |
nkeynes@736 | 247 | size != 4096 ) { |
nkeynes@736 | 248 | ERROR( "Bad MMIO region %d %s", i, tmp ); |
nkeynes@736 | 249 | return -1; |
nkeynes@736 | 250 | } |
nkeynes@736 | 251 | fread_gzip( io_rgn[i]->mem, size, 1, f ); |
nkeynes@18 | 252 | } |
nkeynes@18 | 253 | return 0; |
nkeynes@17 | 254 | } |
nkeynes@17 | 255 | |
nkeynes@50 | 256 | int mem_save_block( const gchar *file, uint32_t start, uint32_t length ) |
nkeynes@19 | 257 | { |
nkeynes@502 | 258 | sh4ptr_t region; |
nkeynes@50 | 259 | int len = 4096, total = 0; |
nkeynes@50 | 260 | uint32_t addr = start; |
nkeynes@50 | 261 | FILE *f = fopen(file,"w"); |
nkeynes@19 | 262 | |
nkeynes@50 | 263 | if( f == NULL ) |
nkeynes@736 | 264 | return errno; |
nkeynes@736 | 265 | |
nkeynes@50 | 266 | while( total < length ) { |
nkeynes@736 | 267 | region = mem_get_region(addr); |
nkeynes@736 | 268 | len = 4096 - (addr & 0x0FFF); |
nkeynes@736 | 269 | if( len > (length-total) ) |
nkeynes@736 | 270 | len = (length-total); |
nkeynes@736 | 271 | if( fwrite( region, len, 1, f ) != 1 ) { |
nkeynes@736 | 272 | ERROR( "Unexpected error writing blocks: %d (%s)", len, strerror(errno) ); |
nkeynes@736 | 273 | break; |
nkeynes@736 | 274 | } |
nkeynes@736 | 275 | |
nkeynes@736 | 276 | addr += len; |
nkeynes@736 | 277 | total += len; |
nkeynes@50 | 278 | } |
nkeynes@50 | 279 | fclose( f ); |
nkeynes@743 | 280 | INFO( "Saved %d of %d bytes to %08X", total, length, start ); |
nkeynes@50 | 281 | return 0; |
nkeynes@19 | 282 | } |
nkeynes@19 | 283 | |
nkeynes@19 | 284 | int mem_load_block( const gchar *file, uint32_t start, uint32_t length ) |
nkeynes@19 | 285 | { |
nkeynes@502 | 286 | sh4ptr_t region; |
nkeynes@19 | 287 | int len = 4096, total = 0; |
nkeynes@19 | 288 | uint32_t addr = start; |
nkeynes@19 | 289 | struct stat st; |
nkeynes@19 | 290 | FILE *f = fopen(file,"r"); |
nkeynes@19 | 291 | |
nkeynes@180 | 292 | if( f == NULL ) { |
nkeynes@736 | 293 | WARN( "Unable to load file '%s': %s", file, strerror(errno) ); |
nkeynes@736 | 294 | return -1; |
nkeynes@180 | 295 | } |
nkeynes@19 | 296 | fstat( fileno(f), &st ); |
nkeynes@72 | 297 | if( length == 0 || length == -1 || length > st.st_size ) |
nkeynes@736 | 298 | length = st.st_size; |
nkeynes@736 | 299 | |
nkeynes@19 | 300 | while( total < length ) { |
nkeynes@736 | 301 | region = mem_get_region(addr); |
nkeynes@736 | 302 | len = 4096 - (addr & 0x0FFF); |
nkeynes@736 | 303 | if( len > (length-total) ) |
nkeynes@736 | 304 | len = (length-total); |
nkeynes@736 | 305 | if( fread( region, len, 1, f ) != 1 ) { |
nkeynes@736 | 306 | ERROR( "Unexpected error reading: %d (%s)", len, strerror(errno) ); |
nkeynes@736 | 307 | break; |
nkeynes@736 | 308 | } |
nkeynes@736 | 309 | |
nkeynes@736 | 310 | addr += len; |
nkeynes@736 | 311 | total += len; |
nkeynes@19 | 312 | } |
nkeynes@19 | 313 | fclose( f ); |
nkeynes@19 | 314 | INFO( "Loaded %d of %d bytes to %08X", total, length, start ); |
nkeynes@19 | 315 | return 0; |
nkeynes@19 | 316 | } |
nkeynes@19 | 317 | |
nkeynes@10 | 318 | struct mem_region *mem_map_region( void *mem, uint32_t base, uint32_t size, |
nkeynes@953 | 319 | const char *name, mem_region_fn_t fn, int flags, |
nkeynes@953 | 320 | uint32_t repeat_offset, uint32_t repeat_until ) |
nkeynes@10 | 321 | { |
nkeynes@10 | 322 | int i; |
nkeynes@10 | 323 | mem_rgn[num_mem_rgns].base = base; |
nkeynes@10 | 324 | mem_rgn[num_mem_rgns].size = size; |
nkeynes@10 | 325 | mem_rgn[num_mem_rgns].flags = flags; |
nkeynes@10 | 326 | mem_rgn[num_mem_rgns].name = name; |
nkeynes@10 | 327 | mem_rgn[num_mem_rgns].mem = mem; |
nkeynes@953 | 328 | mem_rgn[num_mem_rgns].fn = fn; |
nkeynes@953 | 329 | fn->prefetch = unmapped_prefetch; |
nkeynes@975 | 330 | fn->read_byte_for_write = fn->read_byte; |
nkeynes@10 | 331 | num_mem_rgns++; |
nkeynes@10 | 332 | |
nkeynes@146 | 333 | do { |
nkeynes@953 | 334 | for( i=0; i<size>>LXDREAM_PAGE_BITS; i++ ) { |
nkeynes@953 | 335 | if( mem != NULL ) { |
nkeynes@968 | 336 | page_map[(base>>LXDREAM_PAGE_BITS)+i] = ((unsigned char *)mem) + (i<<LXDREAM_PAGE_BITS); |
nkeynes@953 | 337 | } |
nkeynes@953 | 338 | ext_address_space[(base>>LXDREAM_PAGE_BITS)+i] = fn; |
nkeynes@953 | 339 | mem_page_remapped( base + (i<<LXDREAM_PAGE_BITS), fn ); |
nkeynes@953 | 340 | } |
nkeynes@736 | 341 | base += repeat_offset; |
nkeynes@146 | 342 | } while( base <= repeat_until ); |
nkeynes@10 | 343 | |
nkeynes@10 | 344 | return &mem_rgn[num_mem_rgns-1]; |
nkeynes@10 | 345 | } |
nkeynes@10 | 346 | |
nkeynes@953 | 347 | gboolean mem_load_rom( void *output, const gchar *file, uint32_t size, uint32_t crc ) |
nkeynes@10 | 348 | { |
nkeynes@953 | 349 | if( file != NULL && file[0] != '\0' ) { |
nkeynes@953 | 350 | FILE *f = fopen(file,"r"); |
nkeynes@953 | 351 | struct stat st; |
nkeynes@953 | 352 | uint32_t calc_crc; |
nkeynes@146 | 353 | |
nkeynes@953 | 354 | if( f == NULL ) { |
nkeynes@953 | 355 | ERROR( "Unable to load file '%s': %s", file, strerror(errno) ); |
nkeynes@736 | 356 | return FALSE; |
nkeynes@736 | 357 | } |
nkeynes@461 | 358 | |
nkeynes@953 | 359 | fstat( fileno(f), &st ); |
nkeynes@953 | 360 | if( st.st_size != size ) { |
nkeynes@953 | 361 | ERROR( "File '%s' is invalid, expected %d bytes but was %d bytes long.", file, size, st.st_size ); |
nkeynes@953 | 362 | fclose(f); |
nkeynes@953 | 363 | return FALSE; |
nkeynes@953 | 364 | } |
nkeynes@953 | 365 | |
nkeynes@953 | 366 | if( fread( output, 1, size, f ) != size ) { |
nkeynes@953 | 367 | ERROR( "Failed to load file '%s': %s", file, strerror(errno) ); |
nkeynes@953 | 368 | fclose(f); |
nkeynes@953 | 369 | return FALSE; |
nkeynes@953 | 370 | } |
nkeynes@10 | 371 | |
nkeynes@953 | 372 | /* CRC check only if we loaded something */ |
nkeynes@953 | 373 | calc_crc = crc32(0L, output, size); |
nkeynes@953 | 374 | if( calc_crc != crc ) { |
nkeynes@953 | 375 | WARN( "Bios CRC Mismatch in %s: %08X (expected %08X)", |
nkeynes@953 | 376 | file, calc_crc, crc); |
nkeynes@736 | 377 | } |
nkeynes@953 | 378 | /* Even if the CRC fails, continue normally */ |
nkeynes@953 | 379 | return TRUE; |
nkeynes@10 | 380 | } |
nkeynes@543 | 381 | return FALSE; |
nkeynes@10 | 382 | } |
nkeynes@10 | 383 | |
nkeynes@502 | 384 | sh4ptr_t mem_get_region_by_name( const char *name ) |
nkeynes@10 | 385 | { |
nkeynes@10 | 386 | int i; |
nkeynes@10 | 387 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@10 | 388 | if( strcmp( mem_rgn[i].name, name ) == 0 ) |
nkeynes@10 | 389 | return mem_rgn[i].mem; |
nkeynes@10 | 390 | } |
nkeynes@10 | 391 | return NULL; |
nkeynes@10 | 392 | } |
nkeynes@10 | 393 | |
nkeynes@10 | 394 | void register_io_region( struct mmio_region *io ) |
nkeynes@10 | 395 | { |
nkeynes@10 | 396 | int i; |
nkeynes@736 | 397 | |
nkeynes@10 | 398 | assert(io); |
nkeynes@10 | 399 | io->mem = mem_alloc_pages(2); |
nkeynes@796 | 400 | io->save_mem = io->mem + LXDREAM_PAGE_SIZE; |
nkeynes@10 | 401 | io->index = (struct mmio_port **)malloc(1024*sizeof(struct mmio_port *)); |
nkeynes@41 | 402 | io->trace_flag = 0; |
nkeynes@10 | 403 | memset( io->index, 0, 1024*sizeof(struct mmio_port *) ); |
nkeynes@10 | 404 | for( i=0; io->ports[i].id != NULL; i++ ) { |
nkeynes@10 | 405 | io->ports[i].val = (uint32_t *)(io->mem + io->ports[i].offset); |
nkeynes@10 | 406 | *io->ports[i].val = io->ports[i].def_val; |
nkeynes@10 | 407 | io->index[io->ports[i].offset>>2] = &io->ports[i]; |
nkeynes@10 | 408 | } |
nkeynes@796 | 409 | memcpy( io->save_mem, io->mem, LXDREAM_PAGE_SIZE ); |
nkeynes@10 | 410 | if( (io->base & 0xFF000000) == 0xFF000000 ) { |
nkeynes@10 | 411 | /* P4 area (on-chip I/O channels */ |
nkeynes@10 | 412 | P4_io[(io->base&0x1FFFFFFF)>>19] = io; |
nkeynes@10 | 413 | } else { |
nkeynes@674 | 414 | page_map[io->base>>12] = (sh4ptr_t)(uintptr_t)num_io_rgns; |
nkeynes@953 | 415 | ext_address_space[io->base>>12] = &io->fn; |
nkeynes@953 | 416 | mem_page_remapped( io->base, &io->fn ); |
nkeynes@10 | 417 | } |
nkeynes@10 | 418 | io_rgn[num_io_rgns] = io; |
nkeynes@10 | 419 | num_io_rgns++; |
nkeynes@10 | 420 | } |
nkeynes@10 | 421 | |
nkeynes@10 | 422 | void register_io_regions( struct mmio_region **io ) |
nkeynes@10 | 423 | { |
nkeynes@10 | 424 | while( *io ) register_io_region( *io++ ); |
nkeynes@10 | 425 | } |
nkeynes@10 | 426 | |
nkeynes@953 | 427 | gboolean mem_has_page( uint32_t addr ) |
nkeynes@10 | 428 | { |
nkeynes@953 | 429 | return ext_address_space[ (addr&0x1FFFFFFF)>>12 ] != &mem_region_unmapped; |
nkeynes@10 | 430 | } |
nkeynes@10 | 431 | |
nkeynes@502 | 432 | sh4ptr_t mem_get_region( uint32_t addr ) |
nkeynes@10 | 433 | { |
nkeynes@502 | 434 | sh4ptr_t page = page_map[ (addr & 0x1FFFFFFF) >> 12 ]; |
nkeynes@490 | 435 | if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */ |
nkeynes@10 | 436 | return NULL; |
nkeynes@10 | 437 | } else { |
nkeynes@10 | 438 | return page+(addr&0xFFF); |
nkeynes@10 | 439 | } |
nkeynes@10 | 440 | } |
nkeynes@11 | 441 | |
nkeynes@669 | 442 | void mem_write_long( sh4addr_t addr, uint32_t value ) |
nkeynes@669 | 443 | { |
nkeynes@953 | 444 | ext_address_space[(addr&0x1FFFFFFF)>>12]->write_long(addr, value); |
nkeynes@156 | 445 | } |
nkeynes@156 | 446 | |
nkeynes@968 | 447 | static struct mmio_region *mem_get_io_region_by_name( const gchar *name ) |
nkeynes@156 | 448 | { |
nkeynes@586 | 449 | int i; |
nkeynes@586 | 450 | for( i=0; i<num_io_rgns; i++ ) { |
nkeynes@736 | 451 | if( strcasecmp(io_rgn[i]->id, name) == 0 ) { |
nkeynes@736 | 452 | return io_rgn[i]; |
nkeynes@736 | 453 | } |
nkeynes@586 | 454 | } |
nkeynes@586 | 455 | return NULL; |
nkeynes@156 | 456 | } |
nkeynes@156 | 457 | |
nkeynes@586 | 458 | void mem_set_trace( const gchar *tracelist, gboolean flag ) |
nkeynes@586 | 459 | { |
nkeynes@586 | 460 | if( tracelist != NULL ) { |
nkeynes@736 | 461 | gchar ** tracev = g_strsplit_set( tracelist, ",:; \t\r\n", 0 ); |
nkeynes@736 | 462 | int i; |
nkeynes@736 | 463 | for( i=0; tracev[i] != NULL; i++ ) { |
nkeynes@736 | 464 | // Special case "all" - trace everything |
nkeynes@736 | 465 | if( strcasecmp(tracev[i], "all") == 0 ) { |
nkeynes@736 | 466 | int j; |
nkeynes@736 | 467 | for( j=0; j<num_io_rgns; j++ ) { |
nkeynes@736 | 468 | io_rgn[j]->trace_flag = flag ? 1 : 0; |
nkeynes@736 | 469 | } |
nkeynes@736 | 470 | break; |
nkeynes@736 | 471 | } |
nkeynes@736 | 472 | struct mmio_region *region = mem_get_io_region_by_name( tracev[i] ); |
nkeynes@736 | 473 | if( region == NULL ) { |
nkeynes@736 | 474 | WARN( "Unknown IO region '%s'", tracev[i] ); |
nkeynes@736 | 475 | } else { |
nkeynes@736 | 476 | region->trace_flag = flag ? 1 : 0; |
nkeynes@736 | 477 | } |
nkeynes@736 | 478 | } |
nkeynes@736 | 479 | g_strfreev( tracev ); |
nkeynes@586 | 480 | } |
nkeynes@586 | 481 | } |
nkeynes@586 | 482 |
.