UINT32 rom_file_size(const rom_entry *romp)
{
UINT32 maxlength = 0;
/* loop until we run out of reloads */
do
{
UINT32 curlength;
/* loop until we run out of continues/ignores */
curlength = ROM_GETLENGTH(romp++);
while (ROMENTRY_ISCONTINUE(romp) || ROMENTRY_ISIGNORE(romp))
curlength += ROM_GETLENGTH(romp++);
/* track the maximum length */
maxlength = MAX(maxlength, curlength);
}
while (ROMENTRY_ISRELOAD(romp));
return maxlength;
}
static void process_rom_entries(romload_private *romdata, const char *regiontag, const rom_entry *parent_region, const rom_entry *romp, device_t *device, bool from_list)
{
UINT32 lastflags = 0;
/* loop until we hit the end of this region */
while (!ROMENTRY_ISREGIONEND(romp))
{
/* if this is a continue entry, it's invalid */
if (ROMENTRY_ISCONTINUE(romp))
fatalerror("Error in RomModule definition: ROM_CONTINUE not preceded by ROM_LOAD\n");
/* if this is an ignore entry, it's invalid */
if (ROMENTRY_ISIGNORE(romp))
fatalerror("Error in RomModule definition: ROM_IGNORE not preceded by ROM_LOAD\n");
/* if this is a reload entry, it's invalid */
if (ROMENTRY_ISRELOAD(romp))
fatalerror("Error in RomModule definition: ROM_RELOAD not preceded by ROM_LOAD\n");
/* handle fills */
if (ROMENTRY_ISFILL(romp))
fill_rom_data(romdata, romp++);
/* handle copies */
else if (ROMENTRY_ISCOPY(romp))
copy_rom_data(romdata, romp++);
/* handle files */
else if (ROMENTRY_ISFILE(romp))
{
int irrelevantbios = (ROM_GETBIOSFLAGS(romp) != 0 && ROM_GETBIOSFLAGS(romp) != device->system_bios());
const rom_entry *baserom = romp;
int explength = 0;
/* open the file if it is a non-BIOS or matches the current BIOS */
LOG(("Opening ROM file: %s\n", ROM_GETNAME(romp)));
astring tried_file_names;
if (!irrelevantbios && !open_rom_file(romdata, regiontag, romp, tried_file_names, from_list))
handle_missing_file(romdata, romp, tried_file_names, CHDERR_NONE);
/* loop until we run out of reloads */
do
{
/* loop until we run out of continues/ignores */
do
{
rom_entry modified_romp = *romp++;
//int readresult;
/* handle flag inheritance */
if (!ROM_INHERITSFLAGS(&modified_romp))
lastflags = modified_romp._flags;
else
modified_romp._flags = (modified_romp._flags & ~ROM_INHERITEDFLAGS) | lastflags;
explength += ROM_GETLENGTH(&modified_romp);
/* attempt to read using the modified entry */
if (!ROMENTRY_ISIGNORE(&modified_romp) && !irrelevantbios)
/*readresult = */read_rom_data(romdata, parent_region, &modified_romp);
}
while (ROMENTRY_ISCONTINUE(romp) || ROMENTRY_ISIGNORE(romp));
/* if this was the first use of this file, verify the length and CRC */
if (baserom)
{
LOG(("Verifying length (%X) and checksums\n", explength));
verify_length_and_hash(romdata, ROM_GETNAME(baserom), explength, hash_collection(ROM_GETHASHDATA(baserom)));
LOG(("Verify finished\n"));
}
/* reseek to the start and clear the baserom so we don't reverify */
if (romdata->file != NULL)
romdata->file->seek(0, SEEK_SET);
baserom = NULL;
explength = 0;
}
while (ROMENTRY_ISRELOAD(romp));
/* close the file */
if (romdata->file != NULL)
{
LOG(("Closing ROM file\n"));
global_free(romdata->file);
romdata->file = NULL;
}
}
else
{
romp++; /* something else; skip */
}
}
}
static int process_rom_entries(struct rom_load_data *romdata, const struct RomModule *romp)
{
UINT32 lastflags = 0;
/* loop until we hit the end of this region */
while (!ROMENTRY_ISREGIONEND(romp))
{
/* if this is a continue entry, it's invalid */
if (ROMENTRY_ISCONTINUE(romp))
{
printf("Error in RomModule definition: ROM_CONTINUE not preceded by ROM_LOAD\n");
goto fatalerror;
}
/* if this is a reload entry, it's invalid */
if (ROMENTRY_ISRELOAD(romp))
{
printf("Error in RomModule definition: ROM_RELOAD not preceded by ROM_LOAD\n");
goto fatalerror;
}
/* handle fills */
if (ROMENTRY_ISFILL(romp))
{
if (!fill_rom_data(romdata, romp++))
goto fatalerror;
}
/* handle copies */
else if (ROMENTRY_ISCOPY(romp))
{
if (!copy_rom_data(romdata, romp++))
goto fatalerror;
}
/* handle files */
else if (ROMENTRY_ISFILE(romp))
{
if (!ROM_GETBIOSFLAGS(romp) || (ROM_GETBIOSFLAGS(romp) == (system_bios+1))) /* alternate bios sets */
{
const struct RomModule *baserom = romp;
int explength = 0;
/* open the file */
debugload("Opening ROM file: %s\n", ROM_GETNAME(romp));
if (!open_rom_file(romdata, romp))
handle_missing_file(romdata, romp);
/* loop until we run out of reloads */
do
{
/* loop until we run out of continues */
do
{
struct RomModule modified_romp = *romp++;
int readresult;
/* handle flag inheritance */
if (!ROM_INHERITSFLAGS(&modified_romp))
lastflags = modified_romp._flags;
else
modified_romp._flags = (modified_romp._flags & ~ROM_INHERITEDFLAGS) | lastflags;
explength += ROM_GETLENGTH(&modified_romp);
/* attempt to read using the modified entry */
readresult = read_rom_data(romdata, &modified_romp);
if (readresult == -1)
goto fatalerror;
}
while (ROMENTRY_ISCONTINUE(romp));
/* if this was the first use of this file, verify the length and CRC */
if (baserom)
{
debugload("Verifying length (%X) and checksums\n", explength);
verify_length_and_hash(romdata, ROM_GETNAME(baserom), explength, ROM_GETHASHDATA(baserom));
debugload("Verify finished\n");
}
/* reseek to the start and clear the baserom so we don't reverify */
if (romdata->file)
mame_fseek(romdata->file, 0, SEEK_SET);
baserom = NULL;
explength = 0;
}
while (ROMENTRY_ISRELOAD(romp));
/* close the file */
if (romdata->file)
{
debugload("Closing ROM file\n");
mame_fclose(romdata->file);
romdata->file = NULL;
}
}
else
{
romp++; /* skip over file */
}
}
}
return 1;
/* error case */
fatalerror:
if (romdata->file)
mame_fclose(romdata->file);
romdata->file = NULL;
return 0;
}
const struct RomModule *rom_next_chunk(const struct RomModule *romp)
{
romp++;
return (ROMENTRY_ISCONTINUE(romp)) ? romp : NULL;
}
const rom_entry *rom_next_chunk(const rom_entry *romp)
{
romp++;
return (ROMENTRY_ISCONTINUE(romp) || ROMENTRY_ISIGNORE(romp)) ? romp : NULL;
}
