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[PATCH OBV] Use ELF_STRING_ARM_unwind in arm-tdep.c


We've already has the definition like this,

 #define ELF_STRING_ARM_unwind           ".ARM.exidx"

so it is better to use the macro rather than the string.

gdb:

2015-11-09  Yao Qi  <yao.qi@linaro.org>

	* arm-tdep.c (arm_exidx_new_objfile): Use
	ELF_STRING_ARM_unwind.
---
 gdb/ChangeLog  | 5 +++++
 gdb/arm-tdep.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0e63ed2..e198c93 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2015-11-09  Yao Qi  <yao.qi@linaro.org>
 
+	* arm-tdep.c (arm_exidx_new_objfile): Use
+	ELF_STRING_ARM_unwind.
+
+2015-11-09  Yao Qi  <yao.qi@linaro.org>
+
 	* infrun.c (displaced_step_in_progress_thread): New function.
 	(handle_inferior_event_1): Call it.
 
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 46633ec..83ce926 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -2219,7 +2219,7 @@ arm_exidx_new_objfile (struct objfile *objfile)
   cleanups = make_cleanup (null_cleanup, NULL);
 
   /* Read contents of exception table and index.  */
-  exidx = bfd_get_section_by_name (objfile->obfd, ".ARM.exidx");
+  exidx = bfd_get_section_by_name (objfile->obfd, ELF_STRING_ARM_unwind);
   if (exidx)
     {
       exidx_vma = bfd_section_vma (objfile->obfd, exidx);
-- 
1.9.1


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