Julian Seward ae8dfb4531 Incorporate a patch from Craig Chaney which gives better stack ...

snapshots on ppc32-linux in the presence of functions subject to
leaf-function optimisations.

At the same time, simplify the stack unwinding logic by basically
implementing it separately for each target.  Having a single piece of
logic for amd64 and x86 was tenable, but merging ppc32 into it is too
confusing.  So now there is an x86/amd64 unwinder and a ppc32
unwinder.

This requires plumbing a link-register value into
VG_(get_StackTrace2), and that in turn requires passing it around
several other stack-trace-related functions.  Hence 7 changed files.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4464

2005-08-19 16:02:59 +00:00

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