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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
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