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of architectures, get the ELF EM_xxx code from the backend information. Let the generic ELF target match any EM_xxx code not matched by another ELF target. Call elf_backend_object_p to let the backend do more checks and set global information. * libelf.h (struct elf_backend_data): Added elf_machine_code and elf_backend_object_p fields. (struct bfd_elf_arch_map): Removed. (bfd_elf_arch_map, bfd_elf_arch_map_size): Don't declare. * elf32-target.h, elf64-target.h: Initialize elf_machine_code field with ELF_MACHINE_CODE. Initialize elf_backend_object_p field with elf_backend_object_p (if it is defined). * elf32-gen.c, elf32-hppa.c, elf32-i386.c, elf32-i860.c, elf32-m68k.c, elf32-m88k.c, elf32-mips.c, elf32-sparc.c, elf64-gen.c (ELF_MACHINE_CODE): Defined. * elf32-mips.c: Include ecoffswap.h to get ECOFF swapping routines. (mips_elf_object_p): Set the right machine number. (mips_elf_ecoff_debug_swap): Defined. (elf_backend_object_p): Defined to be mips_elf_object_p. (elf_backend_ecoff_debug_swap): Defined to be mips_elf_ecoff_debug_swap. * elf.c (bfd_elf_arch_map, bfd_elf_arch_map_size): Removed. * elf32-mips.c (elf_mips_howto_table): Don't complain on overflow for R_MIPS_26. Correct overflow detection requires matching the upper four bits of the destination against the PC. From Ted Lemon <mellon@pepper.ncd.com>. * elf32-hppa.c (elf_hppa_reloc_type_lookup): Return type should point to const data.