if (s[0] == '*') {
addr = simple_strtoul(&s[1], NULL, 16);
buf = map_physmem(addr, w, MAP_WRBACK);
- if (!buf) {
+ if (!buf && addr) {
puts("Failed to map physical memory\n");
return 0;
}
switch (w) {
case 1:
- l = (long)(*(unsigned char *)buf);
+ l = (long)(*(u8 *)buf);
break;
case 2:
- l = (long)(*(unsigned short *)buf);
+ l = (long)(*(u16 *)buf);
break;
case 4:
- l = (long)(*(unsigned long *)buf);
+ l = (long)(*(u32 *)buf);
break;
}
unmap_physmem(buf, w);