2012-03-16  Roland McGrath  <mcgrathr@google.com>

	* config.bfd: Handle x86_64-*-nacl*.
	* elf64-x86-64.c (bfd_elf64_x86_64_nacl_vec): New backend vector stanza.
	(bfd_elf32_x86_64_nacl_vec): Likewise.
	* targets.c: Support them.
	* configure.in: Likewise.
	* configure: Regenerated.

gas/
2012-03-16  Roland McGrath  <mcgrathr@google.com>

	* config/tc-i386.h [TE_NACL] (ELF_TARGET_FORMAT32, ELF_TARGET_FORMAT64):
	Define for this case.
	* configure.tgt (i386-*-nacl*): If ${cpu} is x86_64*, default to x32.