int initialize_network(void)
{
#if WITH_TUNTAP
const char *str;
network = calloc(sizeof(*network), 1);
// install the network register handlers
install_mem_handler(NET_REGS_BASE, NET_REGS_SIZE, &network_regs_get_put, NULL);
// try to intialize the tun/tap interface
str = get_config_key_string("network", "device", NULL);
if (!str) {
SYS_TRACE(0, "sys: no network device node specified in config file, aborting.\n");
exit(1);
}
// try to open the device
network->fd = open_tun(str);
if (network->fd < 0) {
SYS_TRACE(0, "sys: failed to open tun/tap interface at '%s'\n", str);
exit(1);
}
// start a network reader/writer thread
SDL_CreateThread(&network_thread, NULL);
#endif
return 0;
}
int initialize_mainmem(const char *rom_file, long load_offset)
{
// allocate some ram
mainmem.size = MAINMEM_SIZE;
mainmem.base = MAINMEM_BASE;
mainmem.mem = calloc(1, mainmem.size);
printf("sys: initializing mainmem from rom file %s, offset %ld\n", rom_file, load_offset);
// put it in the memory map
install_mem_handler(mainmem.base, mainmem.size, &mainmem_get_put, &mainmem_get_ptr);
// read in a file, if specified
if(rom_file) {
FILE *fp = fopen(rom_file, "r");
if(fp) {
fread(mainmem.mem + load_offset, 1, mainmem.size, fp);
fclose(fp);
}
}
return 0;
}
