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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Tue, 22 Mar 2011 17:19:35 +0000 (UTC)
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Subject: cvs commit: src/gnu/usr.bin/binutils/ld Makefile.ia64
	elf64_ia64_fbsd.sh
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marcel      2011-03-22 17:19:35 UTC

  FreeBSD src repository

  Modified files:
    gnu/usr.bin/binutils/ld Makefile.ia64 elf64_ia64_fbsd.sh 
  Log:
  SVN rev 219876 on 2011-03-22 17:19:35Z by marcel
  
  Change the load address from offset 0 in region 1 to offset 4G in region 0.
  This (almost) gives us the address space back (at the bottom) that we lost
  at the top.
  
  Region 0 has traditionally been reserved for IA-32 emulation, which has not
  been of great interest. By starting 64-bit processes at the 4G boundary we
  at least preserve some of the advantages:
  1.  Any invalid pointer cast (from int to pointer and back) will still
      always fail and not only when more than 4GB of memory is in use.
  2.  Memory sharing between 64-bit and 32-bit processes is still possibly
      by using addresses < 4G.
  
  Revision  Changes    Path
  1.12      +3 -2      src/gnu/usr.bin/binutils/ld/Makefile.ia64
  1.2       +2 -1      src/gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh