1 files changed, 383 insertions, 0 deletions

diff --git a/apps/plugins/rockboy/loader.c b/apps/plugins/rockboy/loader.c
new file mode 100644
index 0000000000..ad7c309bd8
--- /dev/null
+++ b/apps/plugins/rockboy/loader.c
@@ -0,0 +1,383 @@
+
+#include <stdio.h>
+#include <string.h>
+
+
+#include "rockmacros.h"
+#include "defs.h"
+#include "regs.h"
+#include "mem.h"
+#include "hw.h"
+#include "rtc.h"
+#include "rc.h"
+#include "save.h"
+#include "sound.h"
+
+
+static int mbc_table[256] =
+{
+        0, 1, 1, 1, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 3,
+        3, 3, 3, 3, 0, 0, 0, 0, 0, 5, 5, 5, MBC_RUMBLE, MBC_RUMBLE, MBC_RUMBLE, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, MBC_HUC3, MBC_HUC1
+};
+
+static int rtc_table[256] =
+{
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+        1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0
+};
+
+static int batt_table[256] =
+{
+        0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
+        1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
+        0
+};
+
+static int romsize_table[256] =
+{
+        2, 4, 8, 16, 32, 64, 128, 256, 512,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 128, 128, 128
+        /* 0, 0, 72, 80, 96  -- actual values but bad to use these! */
+};
+
+static int ramsize_table[256] =
+{
+        1, 1, 1, 4, 16,
+        4 /* FIXME - what value should this be?! */
+};
+
+
+static char *romfile;
+static char sramfile[500];
+static char rtcfile[500];
+static char saveprefix[500];
+
+static char *savename;
+static char *savedir = "/.rockbox/rockboy";
+
+static int saveslot;
+
+static int forcebatt, nobatt;
+static int forcedmg;
+
+static int memfill = -1, memrand = -1;
+
+//static byte romMemory[4*1025*1024];
+int mp3_buffer_size;
+void *bufferpos;
+
+static void initmem(void *mem, int size)
+{
+        char *p = mem;
+        if (memrand >= 0)
+        {
+                srand(memrand ? memrand : -6 ); //time(0));
+                while(size--) *(p++) = rand();
+        }
+        else if (memfill >= 0)
+                memset(p, memfill, size);
+}
+
+static byte *loadfile(int fd, int *len)
+{
+        int c, l = 0, p = 0;
+        
+        byte *d, buf[512];
+        d=malloc(32768);
+        for(;;)
+        {
+                c = read(fd, buf, sizeof buf);
+                if (c <= 0) break;
+                l += c;
+                memcpy(d+p, buf, c);
+                p += c;
+        }
+        setmallocpos(d+p+64);
+        *len = l;
+        return d;
+}
+
+//static byte sram[65536];
+
+int rom_load(void)
+{
+        int fd;
+        byte c, *data, *header;
+        int len = 0, rlen;
+
+        fd = open(romfile, O_RDONLY);
+        
+        if (fd<0) {
+          die("cannot open rom file");
+          die(romfile);
+          return 1;
+        }
+
+        data = loadfile(fd, &len);
+        header = data; // no zip. = decompress(data, &len);
+        
+        memcpy(rom.name, header+0x0134, 16);
+        if (rom.name[14] & 0x80) rom.name[14] = 0;
+        if (rom.name[15] & 0x80) rom.name[15] = 0;
+        rom.name[16] = 0;
+
+        c = header[0x0147];
+        mbc.type = mbc_table[c];
+        mbc.batt = (batt_table[c] && !nobatt) || forcebatt;
+//      mbc.batt = 1; // always store savegame mem.
+        rtc.batt = rtc_table[c];
+        mbc.romsize = romsize_table[header[0x0148]];
+        mbc.ramsize = ramsize_table[header[0x0149]];
+
+        if (!mbc.romsize)  { 
+                die("unknown ROM size %02X\n", header[0x0148]);
+                return 1;
+        }
+        if (!mbc.ramsize) { 
+                die("unknown SRAM size %02X\n", header[0x0149]);
+                return 1;
+        }
+
+        rlen = 16384 * mbc.romsize;
+        rom.bank = (void *) data; //realloc(data, rlen);
+        if (rlen > len) memset(rom.bank[0]+len, 0xff, rlen - len);
+
+        ram.sbank = malloc(8192 * mbc.ramsize);
+        //ram.ibank = malloc(4096*8);
+
+        initmem(ram.sbank, 8192 * mbc.ramsize);
+        initmem(ram.ibank, 4096 * 8);
+
+        mbc.rombank = 1;
+        mbc.rambank = 0;
+
+        c = header[0x0143];
+        hw.cgb = ((c == 0x80) || (c == 0xc0)) && !forcedmg;
+        hw.gba = 0; //(hw.cgb && gbamode);
+                
+        close(fd);
+
+        return 0;
+}
+
+int sram_load(void)
+{
+        int fd;
+        char meow[500];
+
+        if (!mbc.batt || !sramfile || !*sramfile) return -1;
+
+        /* Consider sram loaded at this point, even if file doesn't exist */
+        ram.loaded = 1;
+
+        fd = open(sramfile, O_RDONLY);
+        snprintf(meow,499,"Opening %s %d",sramfile,fd);
+        rb->splash(HZ*2, true, meow);           
+        if (fd<0) return -1;
+        snprintf(meow,499,"Loading savedata from %s",sramfile);
+        rb->splash(HZ*2, true, meow);   
+        read(fd,ram.sbank, 8192*mbc.ramsize);
+        close(fd);
+        
+        return 0;
+}
+
+
+int sram_save(void)
+{
+        int fd;
+        char meow[500];
+
+        /* If we crash before we ever loaded sram, DO NOT SAVE! */
+        if (!mbc.batt || !sramfile || !ram.loaded || !mbc.ramsize)
+                return -1;
+        fd = open(sramfile, O_WRONLY|O_CREAT);
+//      snprintf(meow,499,"Opening %s %d",sramfile,fd);
+//      rb->splash(HZ*2, true, meow);
+        if (fd<0) return -1;
+        snprintf(meow,499,"Saving savedata to %s",sramfile);
+        rb->splash(HZ*2, true, meow);
+        write(fd,ram.sbank, 8192*mbc.ramsize);
+        close(fd);
+        
+        return 0;
+}
+
+
+void state_save(int n)
+{
+        int fd;
+        char name[500];
+
+        if (n < 0) n = saveslot;
+        if (n < 0) n = 0;
+        snprintf(name, 499,"%s.%03d", saveprefix, n);
+
+        if ((fd = open(name, O_WRONLY|O_CREAT)>=0))
+        {
+                savestate(fd);
+                close(fd);
+        }
+}
+
+
+void state_load(int n)
+{
+        int fd;
+        char name[500];
+
+        if (n < 0) n = saveslot;
+        if (n < 0) n = 0;
+        snprintf(name, 499, "%s.%03d", saveprefix, n);
+
+        if ((fd = open(name, O_RDONLY)>=0))
+        {
+                loadstate(fd);
+                close(fd);
+                vram_dirty();
+                pal_dirty();
+                sound_dirty();
+                mem_updatemap();
+        }
+}
+
+void rtc_save(void)
+{
+        int fd;
+        if (!rtc.batt) return;
+        if ((fd = open(rtcfile, O_WRONLY|O_CREAT))<0) return;
+        rtc_save_internal(fd);
+        close(fd);
+}
+
+void rtc_load(void)
+{
+        int fd;
+        if (!rtc.batt) return;
+        if ((fd = open(rtcfile, O_RDONLY))<0) return;
+        rtc_load_internal(fd);
+        close(fd);
+}
+
+
+void loader_unload(void)
+{
+        sram_save();
+//      if (romfile) free(romfile);
+//      if (sramfile) free(sramfile);
+//      if (saveprefix) free(saveprefix);
+//      if (rom.bank) free(rom.bank);
+//      if (ram.sbank) free(ram.sbank);
+        romfile =   0;
+        rom.bank = 0;
+        ram.sbank = 0;
+        mbc.type = mbc.romsize = mbc.ramsize = mbc.batt = 0;
+}
+
+/*
+static char *base(char *s)
+{
+        char *p;
+        p = strrchr(s, '/');
+        if (p) return p+1;
+        return s;
+}
+
+
+static char *ldup(char *s)
+{
+        int i;
+        char *n, *p;
+        p = n = malloc(strlen(s));
+        for (i = 0; s[i]; i++) if (isalnum(s[i])) *(p++) = tolower(s[i]);
+        *p = 0;
+        return n;
+}*/
+
+void cleanup(void)
+{
+        sram_save();
+        rtc_save();
+        // IDEA - if error, write emergency savestate..? 
+}
+
+void loader_init(char *s)
+{
+        char *name;
+        DIR* dir;
+
+//      sys_checkdir(savedir, 1); /* needs to be writable */
+        dir=opendir(savedir);
+        if(!dir)
+          mkdir(savedir,0);
+        else
+          closedir(dir);
+
+        romfile = s;
+        if(rom_load())
+                return;
+        vid_settitle(rom.name);
+        name = rom.name;
+        
+        snprintf(saveprefix, 499, "%s/%s", savedir, name);
+
+        strcpy(sramfile, saveprefix);
+        strcat(sramfile, ".sav");
+
+        strcpy(rtcfile, saveprefix);
+        strcat(rtcfile, ".rtc");
+        
+        sram_load();
+        rtc_load();
+
+        //atexit(cleanup);
+}
+
+rcvar_t loader_exports[] =
+{
+        RCV_STRING("savedir", &savedir),
+        RCV_STRING("savename", &savename),
+        RCV_INT("saveslot", &saveslot),
+        RCV_BOOL("forcebatt", &forcebatt),
+        RCV_BOOL("nobatt", &nobatt),
+        RCV_BOOL("forcedmg", &forcedmg),
+        RCV_INT("memfill", &memfill),
+        RCV_INT("memrand", &memrand),
+        RCV_END
+};
+
+
+
+
+
+
+
+
+