Staging
v0.8.1
https://github.com/torvalds/linux
Revision da2e9e1ff40c863a12803c32209baaded3512433 authored by Jakub Jelinek on 31 March 2006, 10:30:28 UTC, committed by Linus Torvalds on 31 March 2006, 20:18:52 UTC
Mark unwind info for signal trampolines using the new S augmentation flag
introduced in: http://gcc.gnu.org/PR26208.

GCC 4.2 (or patched earlier GCC) will be able to special case unwinding
through frames right above signal trampolines.  As the augmentations start
with z flag and S is at the very end of the augmentation string, older GCCs
will just skip the S flag as unknown (that's why an augmentation flag was
chosen over say a new CFA opcode).

Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 97db7fb
History
Tip revision: da2e9e1ff40c863a12803c32209baaded3512433 authored by Jakub Jelinek on 31 March 2006, 10:30:28 UTC
[PATCH] Mark unwind info for signal trampolines in vDSOs
Tip revision: da2e9e1
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