| commit | 15b21d23e9347af296f332787e7cf5fe96b21564 | |
| author | jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 18 Aug 2015 01:08:22 +0000 (18 01:08 +0000) | ||
| committer | jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 18 Aug 2015 01:08:22 +0000 (18 01:08 +0000) | ||
| tree | 4a507f74f55497932cd063ebcfa96266dabf02e9 | treesnapshot (tar.gz zip) |
| parent | 8a596a7740df9dac60b15bb009314a3fd2b775d1 | commitdiff |
xtensa: fix _Unwind_GetCFA
Returning context->cfa in _Unwind_GetCFA makes CFA point one stack frame
higher than what was actually used by code at context->ra. This results
in invalid CFA value in signal frames and premature unwinding completion
in forced unwinding used by uClibc NPTL thread cancellation.
Returning context->sp from _Unwind_GetCFA makes all CFA values valid and
matching code that used them.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/unwind-dw2-xtensa.c (_Unwind_GetCFA): Return
context->sp instead of context->cfa.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@226964 138bc75d-0d04-0410-961f-82ee72b054a4
Returning context->cfa in _Unwind_GetCFA makes CFA point one stack frame
higher than what was actually used by code at context->ra. This results
in invalid CFA value in signal frames and premature unwinding completion
in forced unwinding used by uClibc NPTL thread cancellation.
Returning context->sp from _Unwind_GetCFA makes all CFA values valid and
matching code that used them.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/unwind-dw2-xtensa.c (_Unwind_GetCFA): Return
context->sp instead of context->cfa.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@226964 138bc75d-0d04-0410-961f-82ee72b054a4
| libgcc/ChangeLog | diffblobblamehistory | |
| libgcc/config/xtensa/unwind-dw2-xtensa.c | diffblobblamehistory |