mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-23 14:42:26 +00:00
36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
From 15c7c4d39b317f0d902ef28fd43eca5c3369f891 Mon Sep 17 00:00:00 2001
|
|
From: Max Filippov <jcmvbkbc@gmail.com>
|
|
Date: Sat, 15 Aug 2015 05:12:11 +0300
|
|
Subject: [PATCH 3/3] 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.
|
|
|
|
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
|
|
---
|
|
Backported from: r226964
|
|
|
|
libgcc/config/xtensa/unwind-dw2-xtensa.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
--- a/libgcc/config/xtensa/unwind-dw2-xtensa.c
|
|
+++ b/libgcc/config/xtensa/unwind-dw2-xtensa.c
|
|
@@ -130,7 +130,7 @@
|
|
_Unwind_Word
|
|
_Unwind_GetCFA (struct _Unwind_Context *context)
|
|
{
|
|
- return (_Unwind_Ptr) context->cfa;
|
|
+ return (_Unwind_Ptr) context->sp;
|
|
}
|
|
|
|
/* Overwrite the saved value for register INDEX in CONTEXT with VAL. */
|