Hi,
The Linux kernel already supports non-executable stack since around
February 2010. This patch has GCC emit the notes that are associated
with non-executable stack.
OK? Bootstrapped and tested on mips64-linux-gnu with kernel already
supporting the non-executable stack with no regressions.
Thanks,
Andrew Pinski
ChangeLog:
* config/mips/linux-common.h (TARGET_ASM_FILE_END): Define.
Index: config/mips/linux-common.h
===================================================================
--- config/mips/linux-common.h (revision 189877)
+++ config/mips/linux-common.h (working copy)
@@ -56,3 +56,7 @@ along with GCC; see the file COPYING3.
GNU_USER_TARGET_ENDFILE_SPEC, \
GNU_USER_TARGET_MATHFILE_SPEC " " \
ANDROID_ENDFILE_SPEC)
+
+/* For MIPS, the default is to assume *no* executable stack, so output
+ an executable-stack-note only when needed. */
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
