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From: John Polstra <jdp@FreeBSD.ORG>
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Date: Sun, 7 Feb 1999 15:49:57 -0800 (PST)
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To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject: cvs commit: src/sys/alpha/include elf.h src/sys/i386/include elf.h
         src/sys/kern imgact_elf.c
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jdp         1999/02/07 15:49:56 PST

  Modified files:
    sys/alpha/include    elf.h 
    sys/i386/include     elf.h 
    sys/kern             imgact_elf.c 
  Log:
  Change the load address of the ELF dynamic linker from "2L*MAXDSIZ"
  to an architecture-specific value defined in <machine/elf.h>.  This
  solves problems on large-memory systems that have a high value for
  MAXDSIZ.
  
  The load address is controlled by a new macro ELF_RTLD_ADDR(vmspace).
  On the i386 it is hard-wired to 0x08000000, which is the standard
  SVR4 location for the dynamic linker.
  
  On the Alpha, the dynamic linker is loaded MAXDSIZ bytes beyond
  the start of the program's data segment.  This is the same place
  a userland mmap(0, ...) call would put it, so it ends up just below
  all the shared libraries.  The rationale behind the calculation is
  that it allows room for the data segment to grow to its maximum
  possible size.
  
  These changes have been tested on the i386 for several months
  without problems.  They have been tested on the Alpha as well,
  though not for nearly as long.  I would like to merge the changes
  into 3.1 within a week if no problems have surfaced as a result of
  them.
  
  Revision  Changes    Path
  1.6       +13 -1     src/sys/alpha/include/elf.h
  1.6       +11 -1     src/sys/i386/include/elf.h
  1.53      +2 -2      src/sys/kern/imgact_elf.c

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