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authorRyan S. Arnold <rsa@us.ibm.com>2010-12-19 22:49:01 -0500
committerUlrich Drepper <drepper@gmail.com>2010-12-19 22:49:01 -0500
commit30950a5fd2346c43ba4fc59c16f122cfb59f9629 (patch)
tree400aceac60bdb17ec66caf2850d173ad8554e135 /sysdeps/x86_64/stackinfo.h
parentdb753e2cfb2051ebf20dc089f87c5b1297cc2cff (diff)
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Make PowerPC64 default to nonexecutable stack
Diffstat (limited to 'sysdeps/x86_64/stackinfo.h')
-rw-r--r--sysdeps/x86_64/stackinfo.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/x86_64/stackinfo.h b/sysdeps/x86_64/stackinfo.h
index b11849d9ab..d4fc25f457 100644
--- a/sysdeps/x86_64/stackinfo.h
+++ b/sysdeps/x86_64/stackinfo.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2009, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -22,9 +22,15 @@
 #ifndef _STACKINFO_H
 #define _STACKINFO_H	1
 
+#include <elf.h>
+
 /* On x86_64 the stack grows down.  */
 #define _STACK_GROWS_DOWN	1
 
+/* Default to an executable stack.  PF_X can be overridden if PT_GNU_STACK is
+ * present, but it is presumed absent.  */
+#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)
+
 /* Access to the stack pointer.  The macros are used in alloca_account
    for which they need to act as barriers as well, hence the additional
    (unnecessary) parameters.  */