/********************************************************************* romload.h ROM loading functions. Copyright Nicola Salmoria and the MAME Team. Visit http://mamedev.org for licensing and usage restrictions. *********************************************************************/ #pragma once #ifndef __ROMLOAD_H__ #define __ROMLOAD_H__ #include "mamecore.h" #include "chd.h" #include "options.h" /*************************************************************************** CONSTANTS ***************************************************************************/ /* ----- type constants ----- */ #define ROMENTRY_TYPEMASK 0x0000000f /* type of entry */ enum { ROMENTRYTYPE_ROM = 0, /* this entry is an actual ROM definition */ ROMENTRYTYPE_REGION, /* this entry marks the start of a region */ ROMENTRYTYPE_END, /* this entry marks the end of a region */ ROMENTRYTYPE_RELOAD, /* this entry reloads the previous ROM */ ROMENTRYTYPE_CONTINUE, /* this entry continues loading the previous ROM */ ROMENTRYTYPE_FILL, /* this entry fills an area with a constant value */ ROMENTRYTYPE_COPY, /* this entry copies data from another region/offset */ ROMENTRYTYPE_CARTRIDGE, /* this entry specifies a cartridge (MESS) */ ROMENTRYTYPE_IGNORE, /* this entry continues loading the previous ROM but throws the data away */ ROMENTRYTYPE_SYSTEM_BIOS, /* this entry specifies a bios */ ROMENTRYTYPE_COUNT }; /* ----- per-region constants ----- */ #define ROMREGION_WIDTHMASK 0x00000300 /* native width of region, as power of 2 */ #define ROMREGION_8BIT 0x00000000 /* (non-CPU regions only) */ #define ROMREGION_16BIT 0x00000100 #define ROMREGION_32BIT 0x00000200 #define ROMREGION_64BIT 0x00000300 #define ROMREGION_ENDIANMASK 0x00000400 /* endianness of the region */ #define ROMREGION_LE 0x00000000 /* (non-CPU regions only) */ #define ROMREGION_BE 0x00000400 #define ROMREGION_INVERTMASK 0x00000800 /* invert the bits of the region */ #define ROMREGION_NOINVERT 0x00000000 #define ROMREGION_INVERT 0x00000800 #define ROMREGION_DISPOSEMASK 0x00001000 /* dispose of the region after init */ #define ROMREGION_NODISPOSE 0x00000000 #define ROMREGION_DISPOSE 0x00001000 #define ROMREGION_ERASEMASK 0x00002000 /* erase the region before loading */ #define ROMREGION_NOERASE 0x00000000 #define ROMREGION_ERASE 0x00002000 #define ROMREGION_DATATYPEMASK 0x00004000 /* type of region (ROM versus disk) */ #define ROMREGION_DATATYPEROM 0x00000000 #define ROMREGION_DATATYPEDISK 0x00004000 #define ROMREGION_ERASEVALMASK 0x00ff0000 /* value to erase the region to */ #define ROMREGION_ERASEVAL(x) ((((x) & 0xff) << 16) | ROMREGION_ERASE) #define ROMREGION_ERASE00 ROMREGION_ERASEVAL(0) #define ROMREGION_ERASEFF ROMREGION_ERASEVAL(0xff) /* ----- per-ROM constants ----- */ #define DISK_READONLYMASK 0x00000010 /* is the disk read-only? */ #define DISK_READWRITE 0x00000000 #define DISK_READONLY 0x00000010 #define ROM_OPTIONALMASK 0x00000020 /* optional - won't hurt if it's not there */ #define ROM_REQUIRED 0x00000000 #define ROM_OPTIONAL 0x00000020 #define ROM_REVERSEMASK 0x00000040 /* reverse the byte order within a group */ #define ROM_NOREVERSE 0x00000000 #define ROM_REVERSE 0x00000040 #define ROM_INHERITFLAGSMASK 0x00000080 /* inherit all flags from previous definition */ #define ROM_INHERITFLAGS 0x00000080 #define ROM_GROUPMASK 0x00000f00 /* load data in groups of this size + 1 */ #define ROM_GROUPSIZE(n) ((((n) - 1) & 15) << 8) #define ROM_GROUPBYTE ROM_GROUPSIZE(1) #define ROM_GROUPWORD ROM_GROUPSIZE(2) #define ROM_GROUPDWORD ROM_GROUPSIZE(4) #define ROM_SKIPMASK 0x0000f000 /* skip this many bytes after each group */ #define ROM_SKIP(n) (((n) & 15) << 12) #define ROM_NOSKIP ROM_SKIP(0) #define ROM_BITWIDTHMASK 0x000f0000 /* width of data in bits */ #define ROM_BITWIDTH(n) (((n) & 15) << 16) #define ROM_NIBBLE ROM_BITWIDTH(4) #define ROM_FULLBYTE ROM_BITWIDTH(8) #define ROM_BITSHIFTMASK 0x00f00000 /* left-shift count for the bits */ #define ROM_BITSHIFT(n) (((n) & 15) << 20) #define ROM_NOSHIFT ROM_BITSHIFT(0) #define ROM_SHIFT_NIBBLE_LO ROM_BITSHIFT(0) #define ROM_SHIFT_NIBBLE_HI ROM_BITSHIFT(4) #define ROM_BIOSFLAGSMASK 0xff000000 /* only loaded if value matches global bios value */ #define ROM_BIOS(n) (((n) & 255) << 24) #define ROM_INHERITEDFLAGS (ROM_GROUPMASK | ROM_SKIPMASK | ROM_REVERSEMASK | ROM_BITWIDTHMASK | ROM_BITSHIFTMASK | ROM_BIOSFLAGSMASK) /*************************************************************************** TYPE DEFINITIONS ***************************************************************************/ typedef struct _rom_entry rom_entry; struct _rom_entry { const char * _name; /* name of the file to load */ const char * _hashdata; /* hashing informations (checksums) */ UINT32 _offset; /* offset to load it to */ UINT32 _length; /* length of the file */ UINT32 _flags; /* flags */ }; /* In mamecore.h: typedef struct _rom_load_data rom_load_data; */ struct _rom_load_data { int warnings; /* warning count during processing */ int errors; /* error count during processing */ int romsloaded; /* current ROMs loaded count */ int romstotal; /* total number of ROMs to read */ mame_file * file; /* current file */ UINT8 * regionbase; /* base of current region */ UINT32 regionlength; /* length of current region */ char errorbuf[4096]; /* accumulated errors */ UINT8 tempbuf[65536]; /* temporary buffer */ }; /*************************************************************************** MACROS ***************************************************************************/ /* ----- per-entry macros ----- */ #define ROMENTRY_GETTYPE(r) ((r)->_flags & ROMENTRY_TYPEMASK) #define ROMENTRY_ISSPECIAL(r) (ROMENTRY_GETTYPE(r) != ROMENTRYTYPE_ROM) #define ROMENTRY_ISFILE(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_ROM) #define ROMENTRY_ISREGION(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_REGION) #define ROMENTRY_ISEND(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_END) #define ROMENTRY_ISRELOAD(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_RELOAD) #define ROMENTRY_ISCONTINUE(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_CONTINUE) #define ROMENTRY_ISFILL(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_FILL) #define ROMENTRY_ISCOPY(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_COPY) #define ROMENTRY_ISIGNORE(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_IGNORE) #define ROMENTRY_ISSYSTEM_BIOS(r) (ROMENTRY_GETTYPE(r) == ROMENTRYTYPE_SYSTEM_BIOS) #define ROMENTRY_ISREGIONEND(r) (ROMENTRY_ISREGION(r) || ROMENTRY_ISEND(r)) /* ----- per-region macros ----- */ #define ROMREGION_GETTAG(r) ((r)->_name) #define ROMREGION_GETLENGTH(r) ((r)->_length) #define ROMREGION_GETFLAGS(r) ((r)->_flags) #define ROMREGION_GETWIDTH(r) (8 << ((ROMREGION_GETFLAGS(r) & ROMREGION_WIDTHMASK) >> 8)) #define ROMREGION_ISLITTLEENDIAN(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_ENDIANMASK) == ROMREGION_LE) #define ROMREGION_ISBIGENDIAN(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_ENDIANMASK) == ROMREGION_BE) #define ROMREGION_ISINVERTED(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_INVERTMASK) == ROMREGION_INVERT) #define ROMREGION_ISDISPOSE(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_DISPOSEMASK) == ROMREGION_DISPOSE) #define ROMREGION_ISERASE(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_ERASEMASK) == ROMREGION_ERASE) #define ROMREGION_GETERASEVAL(r) ((ROMREGION_GETFLAGS(r) & ROMREGION_ERASEVALMASK) >> 16) #define ROMREGION_GETDATATYPE(r) (ROMREGION_GETFLAGS(r) & ROMREGION_DATATYPEMASK) #define ROMREGION_ISROMDATA(r) (ROMREGION_GETDATATYPE(r) == ROMREGION_DATATYPEROM) #define ROMREGION_ISDISKDATA(r) (ROMREGION_GETDATATYPE(r) == ROMREGION_DATATYPEDISK) /* ----- per-ROM macros ----- */ #define ROM_GETNAME(r) ((r)->_name) #define ROM_SAFEGETNAME(r) (ROMENTRY_ISFILL(r) ? "fill" : ROMENTRY_ISCOPY(r) ? "copy" : ROM_GETNAME(r)) #define ROM_GETOFFSET(r) ((r)->_offset) #define ROM_GETLENGTH(r) ((r)->_length) #define ROM_GETFLAGS(r) ((r)->_flags) #define ROM_GETHASHDATA(r) ((r)->_hashdata) #define ROM_ISOPTIONAL(r) ((ROM_GETFLAGS(r) & ROM_OPTIONALMASK) == ROM_OPTIONAL) #define ROM_GETGROUPSIZE(r) (((ROM_GETFLAGS(r) & ROM_GROUPMASK) >> 8) + 1) #define ROM_GETSKIPCOUNT(r) ((ROM_GETFLAGS(r) & ROM_SKIPMASK) >> 12) #define ROM_ISREVERSED(r) ((ROM_GETFLAGS(r) & ROM_REVERSEMASK) == ROM_REVERSE) #define ROM_GETBITWIDTH(r) (((ROM_GETFLAGS(r) & ROM_BITWIDTHMASK) >> 16) + 8 * ((ROM_GETFLAGS(r) & ROM_BITWIDTHMASK) == 0)) #define ROM_GETBITSHIFT(r) ((ROM_GETFLAGS(r) & ROM_BITSHIFTMASK) >> 20) #define ROM_INHERITSFLAGS(r) ((ROM_GETFLAGS(r) & ROM_INHERITFLAGSMASK) == ROM_INHERITFLAGS) #define ROM_GETBIOSFLAGS(r) ((ROM_GETFLAGS(r) & ROM_BIOSFLAGSMASK) >> 24) #define ROM_NOGOODDUMP(r) (hash_data_has_info((r)->_hashdata, HASH_INFO_NO_DUMP)) /* ----- per-disk macros ----- */ #define DISK_GETINDEX(r) ((r)->_offset) #define DISK_ISREADONLY(r) ((ROM_GETFLAGS(r) & DISK_READONLYMASK) == DISK_READONLY) #define DISK_ISOPTIONAL(r) ((ROM_GETFLAGS(r) & ROM_OPTIONALMASK) == ROM_OPTIONAL) /* ----- start/stop macros ----- */ #define ROM_START(name) static const rom_entry rom_##name[] = { #define ROM_END { NULL, NULL, 0, 0, ROMENTRYTYPE_END } }; /* ----- ROM region macros ----- */ #define ROM_REGION(length,tag,flags) { tag, NULL, 0, length, ROMENTRYTYPE_REGION | (flags) }, #define ROM_REGION16_LE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_16BIT | ROMREGION_LE) #define ROM_REGION16_BE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_16BIT | ROMREGION_BE) #define ROM_REGION32_LE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_32BIT | ROMREGION_LE) #define ROM_REGION32_BE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_32BIT | ROMREGION_BE) #define ROM_REGION64_LE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_64BIT | ROMREGION_LE) #define ROM_REGION64_BE(length,tag,flags) ROM_REGION(length, tag, (flags) | ROMREGION_64BIT | ROMREGION_BE) /* ----- core ROM loading macros ----- */ #define ROMX_LOAD(name,offset,length,hash,flags) { name, hash, offset, length, ROMENTRYTYPE_ROM | (flags) }, #define ROM_LOAD(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, 0) #define ROM_LOAD_OPTIONAL(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_OPTIONAL) /* ----- specialized loading macros ----- */ #define ROM_LOAD_NIB_HIGH(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI) #define ROM_LOAD_NIB_LOW(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO) #define ROM_LOAD16_BYTE(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_SKIP(1)) #define ROM_LOAD16_WORD(name,offset,length,hash) ROM_LOAD(name, offset, length, hash) #define ROM_LOAD16_WORD_SWAP(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_REVERSE) #define ROM_LOAD32_BYTE(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_SKIP(3)) #define ROM_LOAD32_WORD(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_SKIP(2)) #define ROM_LOAD32_WORD_SWAP(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2)) #define ROM_LOAD32_DWORD(name,offset,length,hash) ROMX_LOAD(name, offset, length, hash, ROM_GROUPDWORD) /* ----- additional ROM-related macros ----- */ #define ROM_CONTINUE(offset,length) { NULL, NULL, offset, length, ROMENTRYTYPE_CONTINUE | ROM_INHERITFLAGS }, #define ROM_RELOAD(offset,length) { NULL, NULL, offset, length, ROMENTRYTYPE_RELOAD | ROM_INHERITFLAGS }, #define ROM_IGNORE(length) { NULL, NULL, 0, length, ROMENTRYTYPE_IGNORE | ROM_INHERITFLAGS }, #define ROM_FILL(offset,length,value) { NULL, (const char *)value, offset, length, ROMENTRYTYPE_FILL }, #define ROM_COPY(srctag,srcoffs,offset,length) { srctag, (const char *)srcoffs, offset, length, ROMENTRYTYPE_COPY }, /* ----- system BIOS macros ----- */ #define ROM_SYSTEM_BIOS(value,name,description) { name, description, 0, 0, ROMENTRYTYPE_SYSTEM_BIOS | ROM_BIOS(value+1) }, /* ----- disk loading macros ----- */ #define DISK_REGION(tag) ROM_REGION(1, tag, ROMREGION_DATATYPEDISK) #define DISK_IMAGE(name,idx,hash) ROMX_LOAD(name, idx, 0, hash, DISK_READWRITE) #define DISK_IMAGE_READONLY(name,idx,hash) ROMX_LOAD(name, idx, 0, hash, DISK_READONLY) #define DISK_IMAGE_READONLY_OPTIONAL(name,idx,hash) ROMX_LOAD(name, idx, 0, hash, DISK_READONLY | ROM_OPTIONAL) /* ----- hash macros ----- */ #define CRC(x) "c:" #x "#" #define SHA1(x) "s:" #x "#" #define MD5(x) "m:" #x "#" #define NO_DUMP "$ND$" #define BAD_DUMP "$BD$" /*************************************************************************** FUNCTION PROTOTYPES ***************************************************************************/ /* disk handling */ chd_error open_disk_image(const game_driver *gamedrv, const rom_entry *romp, mame_file **image_file, chd_file **image_chd); chd_error open_disk_image_options(core_options *options, const game_driver *gamedrv, const rom_entry *romp, mame_file **image_file, chd_file **image_chd); chd_file *get_disk_handle(const char *region); void set_disk_handle(const char *region, mame_file *file, chd_file *chd); /* ROM processing */ void rom_init(running_machine *machine, const rom_entry *romp); int rom_load_warnings(void); const rom_entry *rom_first_region(const game_driver *drv); const rom_entry *rom_next_region(const rom_entry *romp); const rom_entry *rom_first_file(const rom_entry *romp); const rom_entry *rom_next_file(const rom_entry *romp); const rom_entry *rom_first_chunk(const rom_entry *romp); const rom_entry *rom_next_chunk(const rom_entry *romp); #endif /* __ROMLOAD_H__ */