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[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-381-g756df9f
- From: mark at sourceware dot org
- To: systemtap-cvs at sourceware dot org
- Date: 4 Nov 2011 16:29:03 -0000
- Subject: [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-381-g756df9f
- Reply-to: systemtap at sourceware dot org
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commit 756df9f5d5bc9f9e9a2cbfaffadcab9895a8b1e2
Author: Mark Wielaard <mjw@redhat.com>
Date: Fri Nov 4 17:26:43 2011 +0100
PPC64 Dwarf handle both .debug_frame and .eh_frame register mappings.
These are slightly strange since they don't really use dwarf register
mappings, but gcc internal register numbers. There is some confusion about
the numbering see http://gcc.gnu.org/ml/gcc/2004-01/msg00025.html
We just handle the 32 fixed point registers, mq, count and link and
ignore status registers, floating point, vectors and special registers
(most of which aren't available in pt_regs anyway). Also we placed nip
last since we use that as UNW_PC register and it needs to be filled in.
Note that we handle both the .eh_frame and .debug_frame numbering at
the same time. There is potential overlap though. 64 maps to cr in one
and mq in the other...
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Summary of changes:
runtime/unwind/ppc64.h | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
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systemtap: system-wide probe/trace tool