forked from len0rd/rockbox
Rockboy - gameboy emulation for rockbox, based on gnuboy. Still a bit early, but already playable on iRiver H1xx and the simulators. The archos recorder version is currently rather slow...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6104 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold
parent
48dad47df9
commit
384de10246
56 changed files with 9225 additions and 1 deletions
383
apps/plugins/rockboy/loader.c
Normal file
383
apps/plugins/rockboy/loader.c
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#include <stdio.h>
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#include <string.h>
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#include "rockmacros.h"
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#include "defs.h"
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#include "regs.h"
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#include "mem.h"
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#include "hw.h"
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#include "rtc.h"
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#include "rc.h"
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#include "save.h"
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#include "sound.h"
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static int mbc_table[256] =
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{
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0, 1, 1, 1, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 3,
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3, 3, 3, 3, 0, 0, 0, 0, 0, 5, 5, 5, MBC_RUMBLE, MBC_RUMBLE, MBC_RUMBLE, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, MBC_HUC3, MBC_HUC1
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};
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static int rtc_table[256] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
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1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0
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};
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static int batt_table[256] =
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{
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0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
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1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
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0
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};
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static int romsize_table[256] =
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{
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2, 4, 8, 16, 32, 64, 128, 256, 512,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 128, 128, 128
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/* 0, 0, 72, 80, 96 -- actual values but bad to use these! */
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};
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static int ramsize_table[256] =
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{
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1, 1, 1, 4, 16,
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4 /* FIXME - what value should this be?! */
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};
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static char *romfile;
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static char sramfile[500];
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static char rtcfile[500];
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static char saveprefix[500];
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static char *savename;
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static char *savedir = "/.rockbox/rockboy";
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static int saveslot;
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static int forcebatt, nobatt;
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static int forcedmg;
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static int memfill = -1, memrand = -1;
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//static byte romMemory[4*1025*1024];
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int mp3_buffer_size;
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void *bufferpos;
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static void initmem(void *mem, int size)
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{
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char *p = mem;
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if (memrand >= 0)
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{
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srand(memrand ? memrand : -6 ); //time(0));
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while(size--) *(p++) = rand();
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}
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else if (memfill >= 0)
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memset(p, memfill, size);
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}
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static byte *loadfile(int fd, int *len)
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{
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int c, l = 0, p = 0;
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byte *d, buf[512];
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d=malloc(32768);
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for(;;)
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{
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c = read(fd, buf, sizeof buf);
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if (c <= 0) break;
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l += c;
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memcpy(d+p, buf, c);
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p += c;
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}
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setmallocpos(d+p+64);
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*len = l;
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return d;
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}
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//static byte sram[65536];
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int rom_load(void)
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{
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int fd;
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byte c, *data, *header;
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int len = 0, rlen;
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fd = open(romfile, O_RDONLY);
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if (fd<0) {
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die("cannot open rom file");
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die(romfile);
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return 1;
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}
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data = loadfile(fd, &len);
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header = data; // no zip. = decompress(data, &len);
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memcpy(rom.name, header+0x0134, 16);
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if (rom.name[14] & 0x80) rom.name[14] = 0;
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if (rom.name[15] & 0x80) rom.name[15] = 0;
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rom.name[16] = 0;
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c = header[0x0147];
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mbc.type = mbc_table[c];
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mbc.batt = (batt_table[c] && !nobatt) || forcebatt;
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// mbc.batt = 1; // always store savegame mem.
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rtc.batt = rtc_table[c];
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mbc.romsize = romsize_table[header[0x0148]];
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mbc.ramsize = ramsize_table[header[0x0149]];
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if (!mbc.romsize) {
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die("unknown ROM size %02X\n", header[0x0148]);
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return 1;
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}
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if (!mbc.ramsize) {
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die("unknown SRAM size %02X\n", header[0x0149]);
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return 1;
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}
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rlen = 16384 * mbc.romsize;
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rom.bank = (void *) data; //realloc(data, rlen);
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if (rlen > len) memset(rom.bank[0]+len, 0xff, rlen - len);
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ram.sbank = malloc(8192 * mbc.ramsize);
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//ram.ibank = malloc(4096*8);
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initmem(ram.sbank, 8192 * mbc.ramsize);
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initmem(ram.ibank, 4096 * 8);
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mbc.rombank = 1;
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mbc.rambank = 0;
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c = header[0x0143];
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hw.cgb = ((c == 0x80) || (c == 0xc0)) && !forcedmg;
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hw.gba = 0; //(hw.cgb && gbamode);
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close(fd);
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return 0;
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}
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int sram_load(void)
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{
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int fd;
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char meow[500];
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if (!mbc.batt || !sramfile || !*sramfile) return -1;
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/* Consider sram loaded at this point, even if file doesn't exist */
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ram.loaded = 1;
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fd = open(sramfile, O_RDONLY);
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snprintf(meow,499,"Opening %s %d",sramfile,fd);
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rb->splash(HZ*2, true, meow);
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if (fd<0) return -1;
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snprintf(meow,499,"Loading savedata from %s",sramfile);
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rb->splash(HZ*2, true, meow);
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read(fd,ram.sbank, 8192*mbc.ramsize);
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close(fd);
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return 0;
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}
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int sram_save(void)
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{
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int fd;
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char meow[500];
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/* If we crash before we ever loaded sram, DO NOT SAVE! */
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if (!mbc.batt || !sramfile || !ram.loaded || !mbc.ramsize)
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return -1;
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fd = open(sramfile, O_WRONLY|O_CREAT);
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// snprintf(meow,499,"Opening %s %d",sramfile,fd);
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// rb->splash(HZ*2, true, meow);
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if (fd<0) return -1;
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snprintf(meow,499,"Saving savedata to %s",sramfile);
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rb->splash(HZ*2, true, meow);
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write(fd,ram.sbank, 8192*mbc.ramsize);
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close(fd);
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return 0;
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}
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void state_save(int n)
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{
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int fd;
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char name[500];
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if (n < 0) n = saveslot;
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if (n < 0) n = 0;
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snprintf(name, 499,"%s.%03d", saveprefix, n);
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if ((fd = open(name, O_WRONLY|O_CREAT)>=0))
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{
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savestate(fd);
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close(fd);
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}
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}
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void state_load(int n)
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{
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int fd;
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char name[500];
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if (n < 0) n = saveslot;
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if (n < 0) n = 0;
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snprintf(name, 499, "%s.%03d", saveprefix, n);
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if ((fd = open(name, O_RDONLY)>=0))
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{
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loadstate(fd);
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close(fd);
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vram_dirty();
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pal_dirty();
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sound_dirty();
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mem_updatemap();
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}
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}
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void rtc_save(void)
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{
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int fd;
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if (!rtc.batt) return;
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if ((fd = open(rtcfile, O_WRONLY|O_CREAT))<0) return;
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rtc_save_internal(fd);
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close(fd);
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}
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void rtc_load(void)
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{
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int fd;
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if (!rtc.batt) return;
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if ((fd = open(rtcfile, O_RDONLY))<0) return;
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rtc_load_internal(fd);
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close(fd);
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}
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void loader_unload(void)
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{
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sram_save();
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// if (romfile) free(romfile);
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// if (sramfile) free(sramfile);
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// if (saveprefix) free(saveprefix);
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// if (rom.bank) free(rom.bank);
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// if (ram.sbank) free(ram.sbank);
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romfile = 0;
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rom.bank = 0;
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ram.sbank = 0;
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mbc.type = mbc.romsize = mbc.ramsize = mbc.batt = 0;
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}
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/*
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static char *base(char *s)
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{
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char *p;
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p = strrchr(s, '/');
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if (p) return p+1;
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return s;
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}
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static char *ldup(char *s)
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{
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int i;
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char *n, *p;
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p = n = malloc(strlen(s));
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for (i = 0; s[i]; i++) if (isalnum(s[i])) *(p++) = tolower(s[i]);
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*p = 0;
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return n;
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}*/
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void cleanup(void)
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{
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sram_save();
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rtc_save();
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// IDEA - if error, write emergency savestate..?
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}
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void loader_init(char *s)
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{
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char *name;
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DIR* dir;
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// sys_checkdir(savedir, 1); /* needs to be writable */
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dir=opendir(savedir);
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if(!dir)
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mkdir(savedir,0);
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else
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closedir(dir);
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romfile = s;
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if(rom_load())
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return;
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vid_settitle(rom.name);
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name = rom.name;
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snprintf(saveprefix, 499, "%s/%s", savedir, name);
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strcpy(sramfile, saveprefix);
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strcat(sramfile, ".sav");
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strcpy(rtcfile, saveprefix);
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strcat(rtcfile, ".rtc");
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sram_load();
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rtc_load();
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//atexit(cleanup);
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}
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rcvar_t loader_exports[] =
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{
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RCV_STRING("savedir", &savedir),
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RCV_STRING("savename", &savename),
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RCV_INT("saveslot", &saveslot),
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RCV_BOOL("forcebatt", &forcebatt),
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RCV_BOOL("nobatt", &nobatt),
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RCV_BOOL("forcedmg", &forcedmg),
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RCV_INT("memfill", &memfill),
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RCV_INT("memrand", &memrand),
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RCV_END
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};
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