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rebase(1)                 BSD General Commands Manual                rebase(1)


NAME

     rebase -- Changes base address of dylibs and bundles


SYNOPSIS

     rebase [-low_address addr] [-high_address addr] [-arch arch] [-v] file(s)


DESCRIPTION

     The base address of an image (dylib or bundle) is the preferred address
     for it to be loaded.  By default all images are built with a base address
     of zero.  At runtime, if the preferred memory range is already occupied,
     dyld will "slide" the image to a new address range.  There is a small
     cost to the slide, as dyld must do some fix ups.  The rebase tool takes a
     list of images and adjust their base address to be non-overlapping. If no
     low or high address is specified, the a suitable address range is choosen
     for the architecture.

     The options are as follows:

     -low_address addr
             Force the base address for the first image to be addr (specified
             in hex). Each subsequent file gets the next available base
             address.

     -high_address addr
             Force the base address for the last image to be such that when
             that image is loaded it occupies memory up to addr (specified in
             hex). Each preceeding file gets the previous available base
             address.

     -arch arch
             Only rebase the specified architecture.  Other architectures in a
             universal image are left as is.

     -v      Verbose. Print information about rebasing done.


SEE ALSO

     ld(1)

Darwin                           June 6, 2006                           Darwin

Mac OS X 10.6 - Generated Thu Sep 17 20:09:01 CDT 2009
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