[PATCH] PPC32 cfi update part3

Andreas Schwab schwab@suse.de
Sun Aug 13 08:15:00 GMT 2006


Steven Munroe <munroesj@us.ibm.com> writes:

> 	* sysdeps/powerpc/powerpc32/dl-trampoline.S (_dl_runtime_resolve,
> 	_dl_profile_resolve): Add CFI directives for stack and LR save.
> 	Save LR in LRSAVE of previous frame per ABI.

This breaks profiling.  The caller of _mcount is supposed to store LR in
LRSAVE, and _mcount restores it from there, but LRSAVE gets clobbered by
the trampoline.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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"And now for something completely different."



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