diff options
| author | merzlyakovao <merzlyakovao@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-05-16 13:16:33 +0000 |
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| committer | merzlyakovao <merzlyakovao@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-05-16 13:16:33 +0000 |
| commit | 13795f627c41a40f028d98e75f19774bc3a795b1 (patch) | |
| tree | 31231d2e265a1a944d68c15930d108117e482bf2 /libstdc++-v3/libsupc++ | |
| parent | 60711c826ec473878a9bae2df8a4de98cac2d3a2 (diff) | |
2014-05-16 Alexey Merzlyakov <alexey.merzlyakov@samsung.com>
PR libstdc++/60758
* libsupc++/eh_arm.cc (__cxa_end_cleanup): Change r4 to lr in save/restore
and add unwind directives.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210515 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/libsupc++')
| -rw-r--r-- | libstdc++-v3/libsupc++/eh_arm.cc | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/libstdc++-v3/libsupc++/eh_arm.cc b/libstdc++-v3/libsupc++/eh_arm.cc index aa453dddde9..6a45af5afb1 100644 --- a/libstdc++-v3/libsupc++/eh_arm.cc +++ b/libstdc++-v3/libsupc++/eh_arm.cc @@ -199,27 +199,33 @@ asm (".global __cxa_end_cleanup\n" " nop 5\n"); #else // Assembly wrapper to call __gnu_end_cleanup without clobbering r1-r3. -// Also push r4 to preserve stack alignment. +// Also push lr to preserve stack alignment and to allow backtracing. #ifdef __thumb__ asm (" .pushsection .text.__cxa_end_cleanup\n" " .global __cxa_end_cleanup\n" " .type __cxa_end_cleanup, \"function\"\n" " .thumb_func\n" "__cxa_end_cleanup:\n" -" push\t{r1, r2, r3, r4}\n" +" .fnstart\n" +" push\t{r1, r2, r3, lr}\n" +" .save\t{r1, r2, r3, lr}\n" " bl\t__gnu_end_cleanup\n" -" pop\t{r1, r2, r3, r4}\n" +" pop\t{r1, r2, r3, lr}\n" " bl\t_Unwind_Resume @ Never returns\n" +" .fnend\n" " .popsection\n"); #else asm (" .pushsection .text.__cxa_end_cleanup\n" " .global __cxa_end_cleanup\n" " .type __cxa_end_cleanup, \"function\"\n" "__cxa_end_cleanup:\n" -" stmfd\tsp!, {r1, r2, r3, r4}\n" +" .fnstart\n" +" stmfd\tsp!, {r1, r2, r3, lr}\n" +" .save\t{r1, r2, r3, lr}\n" " bl\t__gnu_end_cleanup\n" -" ldmfd\tsp!, {r1, r2, r3, r4}\n" +" ldmfd\tsp!, {r1, r2, r3, lr}\n" " bl\t_Unwind_Resume @ Never returns\n" +" .fnend\n" " .popsection\n"); #endif #endif |