commit 39a300fd08a80963ce13bd1598f9062935751e0f
author Max Filippov <jcmvbkbc@gmail.com> Wed Nov 07 20:52:55 2018 +0000
committer Max Filippov <jcmvbkbc@gcc.gnu.org> Wed Nov 07 20:52:55 2018 +0000
tree 2eb38110b3c11d6de8c83badd844672d33bc201b
parent e31ae982c446804d1b259554203401392b078364

gcc: xtensa: don't force PIC for uclinux target

xtensa-uclinux uses bFLT executable file format that cannot relocate
fields representing offsets from data to code. C++ objects built as PIC
use offsets to encode FDE structures. As a result C++ exception handling
doesn't work correctly on xtensa-uclinux. Don't use PIC by default on
xtensa-uclinux.

gcc/
2018-11-07  Max Filippov  <jcmvbkbc@gmail.com>

	Backport from mainline
	2018-11-05  Max Filippov  <jcmvbkbc@gmail.com>

	* config/xtensa/uclinux.h (XTENSA_ALWAYS_PIC): Change to 0.

From-SVN: r265890

gcc/ChangeLog

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6d1036d..df94dfd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-11-07  Max Filippov  <jcmvbkbc@gmail.com>
+
+	Backport from mainline
+	2018-11-05  Max Filippov  <jcmvbkbc@gmail.com>
+
+	* config/xtensa/uclinux.h (XTENSA_ALWAYS_PIC): Change to 0.
+
 2018-10-26  Release Manager
 
 	* GCC 6.5.0 released.

gcc/config/xtensa/uclinux.h

diff --git a/gcc/config/xtensa/uclinux.h b/gcc/config/xtensa/uclinux.h
index 6279a99..82ec260 100644
--- a/gcc/config/xtensa/uclinux.h
+++ b/gcc/config/xtensa/uclinux.h
@@ -59,8 +59,8 @@
 #undef LOCAL_LABEL_PREFIX
 #define LOCAL_LABEL_PREFIX	"."
 
-/* Always enable "-fpic" for Xtensa Linux.  */
-#define XTENSA_ALWAYS_PIC 1
+/* Don't enable "-fpic" for Xtensa uclinux.  */
+#define XTENSA_ALWAYS_PIC 0
 
 #undef TARGET_LIBC_HAS_FUNCTION
 #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function