diff options
author | 2008-07-28 09:35:36 +0000 | |
---|---|---|
committer | 2008-07-28 09:35:36 +0000 | |
commit | 27fed1ec97c24877a1b44e114d7b9776cb776e8c (patch) | |
tree | 93eb6d00131b30c475d9d60b51f1f97c09e3b98d /src/emu/romload.c | |
parent | 1b8118822915833267718cf56b24e5218b676ca4 (diff) |
Changed the way memory regions are referenced. Instead of a single
integer value, regions are now referred to by a region class and
a region tag. The class specifies the type of region (one of CPU,
gfx, sound, user, disk, prom, pld) while the tag uniquely specifies
the region. This change required updating all the ROM region
definitions in the project to specify the class/tag instead of
region number.
Updated the core memory_region_* functions to accept a class/tag
pair. Added new memory_region_next() function to allow for iteration
over all memory regions of a given class. Added new function
memory_region_class_name() to return the name for a given CPU
memory region class.
Changed the auto-binding behavior of CPU regions. Previously, the
first CPU would auto-bind to REGION_CPU1 (that is, any ROM references
would automatically assume that they lived in the corresponding
region). Now, each CPU automatically binds to the RGNCLASS_CPU region
with the same tag as the CPU itself. This behavior required ensuring
that all previous REGION_CPU* regions were changed to RGNCLASS_CPU
with the same tag as the CPU.
Introduced a new auto-binding mechanism for sound cores. This works
similarly to the CPU binding. Each sound core that requires a memory
region now auto-binds to the RGNCLASS_SOUND with the same tag as the
sound core. In almost all cases, this allowed for the removal of the
explicit region item in the sound configuration, which in turn
allowed for many sound configurations to removed altogether.
Updated the expression engine's memory reference behavior. A recent
update expanded the scope of memory references to allow for referencing
data in non-active CPU spaces, in memory regions, and in EEPROMs.
However, this previous update required an index, which is no longer
appropriate for regions and will become increasingly less appropriate
for CPUs over time. Instead, a new syntax is supported, of the form:
"[tag.][space]size@addr", where 'tag' is an optional tag for the CPU
or memory region you wish to access, followed by a period as a
separator; 'space' is the memory address space or region class you
wish to access (p/d/i for program/data/I/O spaces; o for opcode space;
r for direct RAM; c/u/g/s for CPU/user/gfx/sound regions; e for
EEPROMs); and 'size' is the usual b/w/d/q for byte/word/dword/qword.
Cleaned up ROM definition flags and removed some ugly hacks that had
existed previously. Expanded to support up to 256 BIOSes. Updated
ROM_COPY to support specifying class/tag for the source region.
Updated the address map AM_REGION macro to support specifying a
class/tag for the region.
Updated debugger windows to display the CPU and region tags where
appropriate.
Updated -listxml to output region class and tag for each ROM entry.
Diffstat (limited to 'src/emu/romload.c')
-rw-r--r-- | src/emu/romload.c | 125 |
1 files changed, 63 insertions, 62 deletions
diff --git a/src/emu/romload.c b/src/emu/romload.c index bf31b7d97cb..d2ff24f42c6 100644 --- a/src/emu/romload.c +++ b/src/emu/romload.c @@ -195,7 +195,7 @@ static int determine_bios_rom(rom_load_data *romdata, const rom_entry *romp) for (rom = romp; !ROMENTRY_ISEND(rom); rom++) if (ROMENTRY_ISSYSTEM_BIOS(rom)) { - const char *biosname = ROM_GETHASHDATA(rom); + const char *biosname = ROM_GETNAME(rom); int bios_flags = ROM_GETBIOSFLAGS(rom); char bios_number[20]; @@ -415,17 +415,22 @@ static void display_loading_rom_message(const char *name, rom_load_data *romdata static void display_rom_load_results(rom_load_data *romdata) { - int region; - /* final status display */ display_loading_rom_message(NULL, romdata); /* if we had errors, they are fatal */ if (romdata->errors != 0) { + const char *rgntag, *nextrgntag; + int rgnclass; + /* clean up any regions */ - for (region = 0; region < MAX_MEMORY_REGIONS; region++) - free_memory_region(Machine, region); + for (rgnclass = 0; rgnclass < RGNCLASS_COUNT; rgnclass++) + for (rgntag = memory_region_next(Machine, rgnclass, NULL); rgntag != NULL; rgntag = nextrgntag) + { + nextrgntag = memory_region_next(Machine, rgnclass, rgntag); + memory_region_free(Machine, rgnclass, rgntag); + } /* create the error message and exit fatally */ strcat(romdata->errorbuf, "ERROR: required files are missing, the game cannot be run."); @@ -446,13 +451,13 @@ static void display_rom_load_results(rom_load_data *romdata) byte swapping and inverting data as necessary -------------------------------------------------*/ -static void region_post_process(running_machine *machine, rom_load_data *romdata, int regnum) +static void region_post_process(running_machine *machine, rom_load_data *romdata, int rgnclass, const char *rgntag) { - UINT32 regionlength = memory_region_length(machine, regnum); - UINT32 regionflags = memory_region_flags(machine, regnum); - UINT8 *regionbase = memory_region(machine, regnum); + UINT32 regionlength = memory_region_length(machine, rgnclass, rgntag); + UINT32 regionflags = memory_region_flags(machine, rgnclass, rgntag); + UINT8 *regionbase = memory_region(machine, rgnclass, rgntag); int littleendian = ((regionflags & ROMREGION_ENDIANMASK) == ROMREGION_LE); - int datawidth = 1 << (regionflags & ROMREGION_WIDTHMASK); + int datawidth = 1 << ((regionflags & ROMREGION_WIDTHMASK) >> 8); UINT8 *base; int i, j; @@ -683,7 +688,8 @@ static void fill_rom_data(rom_load_data *romdata, const rom_entry *romp) static void copy_rom_data(rom_load_data *romdata, const rom_entry *romp) { UINT8 *base = romdata->regionbase + ROM_GETOFFSET(romp); - int srcregion = ROM_GETFLAGS(romp) >> 24; + int srcrgnclass = (ROM_GETFLAGS(romp) >> 4) & 0x0f; + const char *srcrgntag = ROM_GETNAME(romp); UINT32 numbytes = ROM_GETLENGTH(romp); UINT32 srcoffs = (FPTR)ROM_GETHASHDATA(romp); /* srcoffset in place of hashdata */ UINT8 *srcbase; @@ -697,12 +703,12 @@ static void copy_rom_data(rom_load_data *romdata, const rom_entry *romp) fatalerror("Error in RomModule definition: COPY has an invalid length\n"); /* make sure the source was valid */ - srcbase = memory_region(Machine, srcregion); - if (!srcbase) + srcbase = memory_region(Machine, srcrgnclass, srcrgntag); + if (srcbase == NULL) fatalerror("Error in RomModule definition: COPY from an invalid region\n"); /* make sure we find within the region space */ - if (srcoffs + numbytes > memory_region_length(Machine, srcregion)) + if (srcoffs + numbytes > memory_region_length(Machine, srcrgnclass, srcrgntag)) fatalerror("Error in RomModule definition: COPY out of source memory region space\n"); /* fill the data */ @@ -1046,30 +1052,33 @@ next: flags for the given CPU index -------------------------------------------------*/ -static UINT32 normalize_flags_for_cpu(running_machine *machine, UINT32 startflags, int cpunum) +static UINT32 normalize_flags_for_cpu(running_machine *machine, UINT32 startflags, const char *rgntag) { - int cputype = machine->config->cpu[cpunum].type; - int buswidth; - - /* set the endianness */ - startflags &= ~ROMREGION_ENDIANMASK; - if (cputype_endianness(cputype) == CPU_IS_LE) - startflags |= ROMREGION_LE; - else - startflags |= ROMREGION_BE; - - /* set the width */ - startflags &= ~ROMREGION_WIDTHMASK; - buswidth = cputype_databus_width(cputype, ADDRESS_SPACE_PROGRAM); - if (buswidth <= 8) - startflags |= ROMREGION_8BIT; - else if (buswidth <= 16) - startflags |= ROMREGION_16BIT; - else if (buswidth <= 32) - startflags |= ROMREGION_32BIT; - else - startflags |= ROMREGION_64BIT; + int cpunum = mame_find_cpu_index(machine, rgntag); + if (cpunum >= 0) + { + int cputype = machine->config->cpu[cpunum].type; + int buswidth; + /* set the endianness */ + startflags &= ~ROMREGION_ENDIANMASK; + if (cputype_endianness(cputype) == CPU_IS_LE) + startflags |= ROMREGION_LE; + else + startflags |= ROMREGION_BE; + + /* set the width */ + startflags &= ~ROMREGION_WIDTHMASK; + buswidth = cputype_databus_width(cputype, ADDRESS_SPACE_PROGRAM); + if (buswidth <= 8) + startflags |= ROMREGION_8BIT; + else if (buswidth <= 16) + startflags |= ROMREGION_16BIT; + else if (buswidth <= 32) + startflags |= ROMREGION_32BIT; + else + startflags |= ROMREGION_64BIT; + } return startflags; } @@ -1081,10 +1090,8 @@ static UINT32 normalize_flags_for_cpu(running_machine *machine, UINT32 startflag void rom_init(running_machine *machine, const rom_entry *romp) { - const rom_entry *regionlist[REGION_MAX]; - const rom_entry *region; static rom_load_data romdata; - int regnum; + const rom_entry *region; /* if no roms, bail */ if (romp == NULL) @@ -1093,9 +1100,6 @@ void rom_init(running_machine *machine, const rom_entry *romp) /* make sure we get called back on the way out */ add_exit_callback(machine, rom_exit); - /* reset the region list */ - memset((void *)regionlist, 0, sizeof(regionlist)); - /* reset the romdata struct */ memset(&romdata, 0, sizeof(romdata)); @@ -1109,23 +1113,24 @@ void rom_init(running_machine *machine, const rom_entry *romp) chd_list_tailptr = &chd_list; /* loop until we hit the end */ - for (region = romp, regnum = 0; region; region = rom_next_region(region), regnum++) + for (region = romp; region; region = rom_next_region(region)) { UINT32 regionlength = ROMREGION_GETLENGTH(region); UINT32 regionflags = ROMREGION_GETFLAGS(region); - int regiontype = ROMREGION_GETTYPE(region); + const char *regiontag = ROMREGION_GETTAG(region); + int regionclass = ROMREGION_GETCLASS(region); - LOG(("Processing region %02X (length=%X)\n", regiontype, regionlength)); + LOG(("Processing region %d,\"%s\" (length=%X)\n", regionclass, regiontag, regionlength)); /* the first entry must be a region */ assert(ROMENTRY_ISREGION(region)); /* if this is a CPU region, override with the CPU width and endianness */ - if (regiontype >= REGION_CPU1 && regiontype < REGION_CPU1 + MAX_CPU) - regionflags = normalize_flags_for_cpu(machine, regionflags, regiontype - REGION_CPU1); + if (regionclass == RGNCLASS_CPU) + regionflags = normalize_flags_for_cpu(machine, regionflags, regiontag); /* remember the base and length */ - romdata.regionbase = new_memory_region(machine, regiontype, regionlength, regionflags); + romdata.regionbase = memory_region_alloc(machine, regionclass, regiontag, regionlength, regionflags); romdata.regionlength = regionlength; LOG(("Allocated %X bytes @ %p\n", romdata.regionlength, romdata.regionbase)); @@ -1149,19 +1154,10 @@ void rom_init(running_machine *machine, const rom_entry *romp) else if (ROMREGION_ISDISKDATA(region)) process_disk_entries(&romdata, region + 1); - /* add this region to the list */ - if (regiontype < REGION_MAX) - regionlist[regiontype] = region; + /* finally, post-process for endianness and inversion */ + region_post_process(machine, &romdata, regionclass, regiontag); } - /* post-process the regions */ - for (regnum = 0; regnum < REGION_MAX; regnum++) - if (regionlist[regnum]) - { - LOG(("Post-processing region %02X\n", regnum)); - region_post_process(machine, &romdata, regnum); - } - /* display the results and exit */ total_rom_load_warnings = romdata.warnings; @@ -1175,12 +1171,17 @@ void rom_init(running_machine *machine, const rom_entry *romp) static void rom_exit(running_machine *machine) { + const char *rgntag, *nextrgntag; open_chd *curchd; - int i; + int rgnclass; /* free the memory allocated for various regions */ - for (i = 0; i < MAX_MEMORY_REGIONS; i++) - free_memory_region(machine, i); + for (rgnclass = 0; rgnclass < RGNCLASS_COUNT; rgnclass++) + for (rgntag = memory_region_next(machine, rgnclass, NULL); rgntag != NULL; rgntag = nextrgntag) + { + nextrgntag = memory_region_next(machine, rgnclass, rgntag); + memory_region_free(machine, rgnclass, rgntag); + } /* close all hard drives */ for (curchd = chd_list; curchd != NULL; curchd = curchd->next) |