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invoke.texi (RS/6000 and PowerPC Options): Rewrite -mrelocatable and -mrelocatable-lib description.

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* doc/invoke.texi (RS/6000 and PowerPC Options): Rewrite -mrelocatable
	and -mrelocatable-lib description.

From-SVN: r162929
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Alan Modra 2010-08-06 12:16:44 +09:30 • committed by Alan Modra
parent ca542437ef
commit 4942323e5d
2 changed files with 19 additions and 9 deletions
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@ -1,3 +1,8 @@
2010-08-06 Alan Modra <amodra@gmail.com>
* doc/invoke.texi (RS/6000 and PowerPC Options): Rewrite -mrelocatable
and -mrelocatable-lib description.
2010-08-05 Bernd Schmidt <bernds@codesourcery.com>
From Martin Thuresson <martint@google.com>

23
gcc/doc/invoke.texi
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@ -15418,20 +15418,25 @@ unaligned memory references will be handled by the system.
@itemx -mno-relocatable
@opindex mrelocatable
@opindex mno-relocatable
On embedded PowerPC systems generate code that allows (does not allow)
the program to be relocated to a different address at runtime. If you
use @option{-mrelocatable} on any module, all objects linked together must
be compiled with @option{-mrelocatable} or @option{-mrelocatable-lib}.
Generate code that allows (does not allow) a static executable to be
relocated to a different address at runtime. A simple embedded
PowerPC system loader should relocate the entire contents of
@code{.got2} and 4-byte locations listed in the @code{.fixup} section,
a table of 32-bit addresses generated by this option. For this to
work, all objects linked together must be compiled with
@option{-mrelocatable} or @option{-mrelocatable-lib}.
@option{-mrelocatable} code aligns the stack to an 8 byte boundary.
@item -mrelocatable-lib
@itemx -mno-relocatable-lib
@opindex mrelocatable-lib
@opindex mno-relocatable-lib
On embedded PowerPC systems generate code that allows (does not allow)
the program to be relocated to a different address at runtime. Modules
compiled with @option{-mrelocatable-lib} can be linked with either modules
compiled without @option{-mrelocatable} and @option{-mrelocatable-lib} or
with modules compiled with the @option{-mrelocatable} options.
Like @option{-mrelocatable}, @option{-mrelocatable-lib} generates a
@code{.fixup} section to allow static executables to be relocated at
runtime, but @option{-mrelocatable-lib} does not use the smaller stack
alignment of @option{-mrelocatable}. Objects compiled with
@option{-mrelocatable-lib} may be linked with objects compiled with
any combination of the @option{-mrelocatable} options.
@item -mno-toc
@itemx -mtoc