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List:       binutils
Subject:    Re: Relaxation and Dwarf CIE/FDE
From:       Ian Lance Taylor <iant () google ! com>
Date:       2007-05-30 17:56:18
Message-ID: m3veeayz3x.fsf () localhost ! localdomain
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Michael Eager <eager@eagercon.com> writes:

> I'm working with a target which has a linker relaxation
> pass.  The compiler is generating Dwarf.  When the linker
> shrinks a branch, the CIE/FDEs are not modified, so they
> end up pointing to the wrong instructions.
> 
> I looked through the code (binutils-2.16) but didn't
> see any code which addressed this.  Can anyone suggest
> a pointer to where this is handled?

You have to arrange for the assembler to keep all relocations,
including PC-relative relocations which would otherwise be resolved by
the assembler.  Then the linker has to adjust those PC-relative
relocations correctly during relaxation.  The SH relaxation code does
this.

Ian

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