bin_sms.c File Reference

#include <rz_bin.h>

Go to the source code of this file.

Classes
struct	gen_hdr

Typedefs
typedef struct gen_hdr	SMS_Header

Functions
static bool	check_buffer (RzBuffer *b)
static bool	load_buffer (RzBinFile *bf, RzBinObject *obj, RzBuffer *buf, Sdb *sdb)
static RzBinInfo *	info (RzBinFile *bf)

Variables
static ut32	cb = 0
RzBinPlugin	rz_bin_plugin_sms
RZ_API RzLibStruct	rizin_plugin

Typedef Documentation

SMS_Header

typedef struct gen_hdr SMS_Header

Function Documentation

check_buffer()

static bool check_buffer ( RzBuffer *  b )

static

Definition at line 17 of file bin_sms.c.

                                      {
    ut32 *off, offs[] = { 0x2000, 0x4000, 0x8000, 0x9000, 0 };
    ut8 signature[8];
    for (off = (ut32 *)&offs; *off; off++) {
        rz_buf_read_at(b, *off - 16, (ut8 *)&signature, 8);
        if (!strncmp((const char *)signature, "TMR SEGA", 8)) {
            cb = *off - 16;
            return true; // int)(*off - 16);
        }
        if (*off == 0x8000) {
            if (!strncmp((const char *)signature, "SDSC", 4)) {
                cb = *off - 16;
                return true; // (int)(*off - 16);
            }
        }
    }
    return false;
}

References b, cb, off, rz_buf_read_at(), and signature().

Referenced by info(), and load_buffer().

info()

static RzBinInfo* info ( RzBinFile *  bf )

static

Definition at line 40 of file bin_sms.c.

                                      {
    RzBinInfo *ret = RZ_NEW0(RzBinInfo);
    if (!ret || !bf || !bf->buf) {
        free(ret);
        return NULL;
    }
    ret->file = strdup(bf->file);
    ret->type = strdup("ROM");
    ret->machine = strdup("SEGA MasterSystem");
    ret->os = strdup("sms");
    ret->arch = strdup("z80");
    ret->has_va = 1;
    ret->bits = 8;
    if (!check_buffer(bf->buf)) {
        eprintf("Cannot find magic SEGA copyright\n");
        free(ret);
        return NULL;
    }
    SMS_Header hdr = { { 0 } };
    rz_buf_read_at(bf->buf, cb, (ut8 *)&hdr, sizeof(hdr));
    hdr.CheckSum = rz_read_le16(&hdr.CheckSum);
 
    eprintf("Checksum: 0x%04x\n", (ut32)hdr.CheckSum); // use endian safe apis here
    eprintf("ProductCode: %02d%02X%02X\n", (hdr.Version >> 4), hdr.ProductCode[1],
        hdr.ProductCode[0]);
    switch (hdr.RegionRomSize >> 4) {
    case 3:
        eprintf("Console: Sega Master System\n");
        eprintf("Region: Japan\n");
        break;
    case 4:
        eprintf("Console: Sega Master System\n");
        eprintf("Region: Export\n");
        break;
    case 5:
        eprintf("Console: Game Gear\n");
        eprintf("Region: Japan\n");
        break;
    case 6:
        eprintf("Console: Game Gear\n");
        eprintf("Region: Export\n");
        break;
    case 7:
        eprintf("Console: Game Gear\n");
        eprintf("Region: International\n");
        break;
    }
    int romsize = 0;
    switch (hdr.RegionRomSize & 0xf) {
    case 0xa: romsize = 8; break;
    case 0xb: romsize = 16; break;
    case 0xc: romsize = 32; break;
    case 0xd: romsize = 48; break;
    case 0xe: romsize = 64; break;
    case 0xf: romsize = 128; break;
    case 0x0: romsize = 256; break;
    case 0x1: romsize = 512; break;
    case 0x2: romsize = 1024; break;
    }
    eprintf("RomSize: %dKB\n", romsize);
    return ret;
}

References rz_bin_info_t::arch, rz_bin_info_t::bits, rz_bin_file_t::buf, cb, check_buffer(), gen_hdr::CheckSum, eprintf, rz_bin_info_t::file, rz_bin_file_t::file, free(), rz_bin_info_t::has_va, rz_bin_info_t::machine, NULL, rz_bin_info_t::os, gen_hdr::ProductCode, gen_hdr::RegionRomSize, rz_buf_read_at(), RZ_NEW0, rz_read_le16(), strdup(), rz_bin_info_t::type, and gen_hdr::Version.

load_buffer()

static bool load_buffer ( RzBinFile *  bf, RzBinObject *  obj, RzBuffer *  buf, Sdb *  sdb  )

static

Definition at line 36 of file bin_sms.c.

                                                                                  {
    return check_buffer(buf);
}

References check_buffer().

Variable Documentation

cb

ut32 cb = 0

static

Definition at line 15 of file bin_sms.c.

Referenced by check_buffer(), and info().

rizin_plugin

RZ_API RzLibStruct rizin_plugin

Initial value:

= {
    .type = RZ_LIB_TYPE_BIN,
    .data = &rz_bin_plugin_sms,
    .version = RZ_VERSION
}

Definition at line 115 of file bin_sms.c.

rz_bin_plugin_sms

RzBinPlugin rz_bin_plugin_sms

Initial value:

= {
    .name = "sms",
    .desc = "SEGA MasterSystem/GameGear",
    .license = "LGPL3",
    .load_buffer = &load_buffer,
    .check_buffer = &check_buffer,
    .info = &info,
    .minstrlen = 10,
    .strfilter = 'U'
}

Definition at line 103 of file bin_sms.c.