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Decouple memory_region parameters from the ROMREGION flags.

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This commit is contained in:
Aaron Giles 2011-03-14 15:41:19 +00:00
parent 38c271080c
commit 91f3ecc009
4 changed files with 32 additions and 32 deletions
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10
src/emu/machine.c
View File

@ -604,7 +604,7 @@ void running_machine::resume()
// region_alloc - allocates memory for a region
//-------------------------------------------------
memory_region *running_machine::region_alloc(const char *name, UINT32 length, UINT32 flags)
memory_region *running_machine::region_alloc(const char *name, UINT32 length, UINT8 width, endianness_t endian)
{
// make sure we don't have a region of the same name; also find the end of the list
memory_region *info = m_regionlist.find(name);
@ -612,7 +612,7 @@ memory_region *running_machine::region_alloc(const char *name, UINT32 length, UI
fatalerror("region_alloc called with duplicate region name \"%s\"\n", name);
// allocate the region
return &m_regionlist.append(name, *auto_alloc(this, memory_region(*this, name, length, flags)));
return &m_regionlist.append(name, *auto_alloc(this, memory_region(*this, name, length, width, endian)));
}
@ -881,13 +881,15 @@ void running_machine::logfile_callback(running_machine &machine, const char *buf
// memory_region - constructor
//-------------------------------------------------
memory_region::memory_region(running_machine &machine, const char *name, UINT32 length, UINT32 flags)
memory_region::memory_region(running_machine &machine, const char *name, UINT32 length, UINT8 width, endianness_t endian)
: m_machine(machine),
m_next(NULL),
m_name(name),
m_length(length),
m_flags(flags)
m_width(width),
m_endianness(endian)
{
assert(width == 1 || width == 2 || width == 4 || width == 8);
m_base.u8 = auto_alloc_array(&machine, UINT8, length);
}

13
src/emu/machine.h
View File

@ -214,7 +214,7 @@ class memory_region
friend resource_pool_object<memory_region>::~resource_pool_object();
// construction/destruction
memory_region(running_machine &machine, const char *name, UINT32 length, UINT32 flags);
memory_region(running_machine &machine, const char *name, UINT32 length, UINT8 width, endianness_t endian);
~memory_region();
public:
@ -224,12 +224,10 @@ public:
UINT8 *end() const { return (this != NULL) ? m_base.u8 + m_length : NULL; }
UINT32 bytes() const { return (this != NULL) ? m_length : 0; }
const char *name() const { return m_name; }
UINT32 flags() const { return m_flags; }
// flag expansion
endianness_t endianness() const { return ((m_flags & ROMREGION_ENDIANMASK) == ROMREGION_LE) ? ENDIANNESS_LITTLE : ENDIANNESS_BIG; }
UINT8 width() const { return 1 << ((m_flags & ROMREGION_WIDTHMASK) >> 8); }
bool invert() const { return ((m_flags & ROMREGION_INVERTMASK) != 0); }
endianness_t endianness() const { return m_endianness; }
UINT8 width() const { return m_width; }
// data access
UINT8 &u8(offs_t offset = 0) const { return m_base.u8[offset]; }
@ -255,7 +253,8 @@ private:
astring m_name;
generic_ptr m_base;
UINT32 m_length;
UINT32 m_flags;
UINT8 m_width;
endianness_t m_endianness;
};
@ -372,7 +371,7 @@ public:
void current_datetime(system_time &systime);
// regions
memory_region *region_alloc(const char *name, UINT32 length, UINT32 flags);
memory_region *region_alloc(const char *name, UINT32 length, UINT8 width, endianness_t endian);
void region_free(const char *name);
// managers

2
src/emu/machine/eeprom.c
View File

@ -281,7 +281,7 @@ void eeprom_device::nvram_default()
if (m_config.m_data_bits == 8 && m_region->width() != 1)
fatalerror("eeprom region '%s' needs to be an 8-bit region", tag());
if (m_config.m_data_bits == 16 && (m_region->width() != 2 || m_region->endianness() != ENDIANNESS_BIG))
fatalerror("eeprom region '%s' needs to be a 16-bit big-endian region (flags=%08x)", tag(), m_region->flags());
fatalerror("eeprom region '%s' needs to be a 16-bit big-endian region", tag());
for (offs_t offs = 0; offs < eeprom_length; offs++)
if (m_config.m_data_bits == 8)

39
src/emu/romload.c
View File

@ -567,7 +567,7 @@ static void display_rom_load_results(rom_load_data *romdata)
byte swapping and inverting data as necessary
-------------------------------------------------*/
static void region_post_process(rom_load_data *romdata, const char *rgntag)
static void region_post_process(rom_load_data *romdata, const char *rgntag, bool invert)
{
const memory_region *region = romdata->machine->region(rgntag);
UINT8 *base;
@ -580,7 +580,7 @@ static void region_post_process(rom_load_data *romdata, const char *rgntag)
LOG(("+ datawidth=%d little=%d\n", region->width(), region->endianness() == ENDIANNESS_LITTLE));
/* if the region is inverted, do that now */
if (region->invert())
if (invert)
{
LOG(("+ Inverting region\n"));
for (i = 0, base = region->base(); i < region->bytes(); i++)
@ -1288,7 +1288,7 @@ static void process_disk_entries(rom_load_data *romdata, const char *regiontag,
flags for the given device
-------------------------------------------------*/
static UINT32 normalize_flags_for_device(running_machine *machine, UINT32 startflags, const char *rgntag)
static void normalize_flags_for_device(running_machine *machine, const char *rgntag, UINT8 &width, endianness_t &endian)
{
device_t *device = machine->device(rgntag);
device_memory_interface *memory;
@ -1300,26 +1300,23 @@ static UINT32 normalize_flags_for_device(running_machine *machine, UINT32 startf
int buswidth;
/* set the endianness */
startflags &= ~ROMREGION_ENDIANMASK;
if (spaceconfig->m_endianness == ENDIANNESS_LITTLE)
startflags |= ROMREGION_LE;
endian = ENDIANNESS_LITTLE;
else
startflags |= ROMREGION_BE;
endian = ENDIANNESS_BIG;
/* set the width */
startflags &= ~ROMREGION_WIDTHMASK;
buswidth = spaceconfig->m_databus_width;
if (buswidth <= 8)
startflags |= ROMREGION_8BIT;
width = 1;
else if (buswidth <= 16)
startflags |= ROMREGION_16BIT;
width = 2;
else if (buswidth <= 32)
startflags |= ROMREGION_32BIT;
width = 4;
else
startflags |= ROMREGION_64BIT;
width = 8;
}
}
return startflags;
}
@ -1388,7 +1385,6 @@ void load_software_part_region(device_t *device, char *swlist, char *swname, rom
for (region = start_region; region != NULL; region = rom_next_region(region))
{
UINT32 regionlength = ROMREGION_GETLENGTH(region);
UINT32 regionflags = ROMREGION_GETFLAGS(region);
device->subtag(regiontag, ROMREGION_GETTAG(region));
LOG(("Processing region \"%s\" (length=%X)\n", regiontag.cstr(), regionlength));
@ -1397,18 +1393,20 @@ void load_software_part_region(device_t *device, char *swlist, char *swname, rom
assert(ROMENTRY_ISREGION(region));
/* if this is a device region, override with the device width and endianness */
endianness_t endianness = ROMREGION_ISBIGENDIAN(region) ? ENDIANNESS_BIG : ENDIANNESS_LITTLE;
UINT8 width = ROMREGION_GETWIDTH(region) / 8;
const memory_region *memregion = romdata->machine->region(regiontag);
if (memregion != NULL)
{
if (romdata->machine->device(regiontag) != NULL)
regionflags = normalize_flags_for_device(romdata->machine, regionflags, regiontag);
normalize_flags_for_device(romdata->machine, regiontag, width, endianness);
/* clear old region (todo: should be moved to an image unload function) */
romdata->machine->region_free(memregion->name());
}
/* remember the base and length */
romdata->region = romdata->machine->region_alloc(regiontag, regionlength, regionflags);
romdata->region = romdata->machine->region_alloc(regiontag, regionlength, width, endianness);
LOG(("Allocated %X bytes @ %p\n", romdata->region->bytes(), romdata->region->base()));
/* clear the region if it's requested */
@ -1434,7 +1432,7 @@ void load_software_part_region(device_t *device, char *swlist, char *swname, rom
/* now go back and post-process all the regions */
for (region = start_region; region != NULL; region = rom_next_region(region))
region_post_process(romdata, ROMREGION_GETTAG(region));
region_post_process(romdata, ROMREGION_GETTAG(region), ROMREGION_ISINVERTED(region));
/* display the results and exit */
display_rom_load_results(romdata);
@ -1456,7 +1454,6 @@ static void process_region_list(rom_load_data *romdata)
for (region = rom_first_region(*source); region != NULL; region = rom_next_region(region))
{
UINT32 regionlength = ROMREGION_GETLENGTH(region);
UINT32 regionflags = ROMREGION_GETFLAGS(region);
rom_region_name(regiontag, romdata->machine->gamedrv, source, region);
LOG(("Processing region \"%s\" (length=%X)\n", regiontag.cstr(), regionlength));
@ -1467,11 +1464,13 @@ static void process_region_list(rom_load_data *romdata)
if (ROMREGION_ISROMDATA(region))
{
/* if this is a device region, override with the device width and endianness */
UINT8 width = ROMREGION_GETWIDTH(region) / 8;
endianness_t endianness = ROMREGION_ISBIGENDIAN(region) ? ENDIANNESS_BIG : ENDIANNESS_LITTLE;
if (romdata->machine->device(regiontag) != NULL)
regionflags = normalize_flags_for_device(romdata->machine, regionflags, regiontag);
normalize_flags_for_device(romdata->machine, regiontag, width, endianness);
/* remember the base and length */
romdata->region = romdata->machine->region_alloc(regiontag, regionlength, regionflags);
romdata->region = romdata->machine->region_alloc(regiontag, regionlength, width, endianness);
LOG(("Allocated %X bytes @ %p\n", romdata->region->bytes(), romdata->region->base()));
/* clear the region if it's requested */
@ -1498,7 +1497,7 @@ static void process_region_list(rom_load_data *romdata)
/* now go back and post-process all the regions */
for (source = rom_first_source(*romdata->machine->config); source != NULL; source = rom_next_source(*source))
for (region = rom_first_region(*source); region != NULL; region = rom_next_region(region))
region_post_process(romdata, ROMREGION_GETTAG(region));
region_post_process(romdata, ROMREGION_GETTAG(region), ROMREGION_ISINVERTED(region));
}