Cannot support 64-bit targets with gdb 4.16. They assume that BFD_ARCH_SIZE is 64, but that causes bfd_vma_addr to be a 64-bit int. GDB uses bfd_vma_addr for CORE_ADDR, but also casts CORE_ADDRS to ints, which loses on 32-bit mips hosts.
bfd_elf{32,64}_{big,litte}mips_vec, ecoff{big,little}_vec