From f25455e60cb791e1dd6c3d6d4c0951579b02c15a Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Fri, 29 Apr 2016 19:58:08 -0700
Subject: Security: do not require executable stack.

Ever since jmp.S was added, the txr executable has been
building with a bit in the program header indicating that the
stack is to be executable.

* jmp.S: Define the .note.GNU-stack section to
tell the linker we don't need an executable stack.
---
 jmp.S | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/jmp.S b/jmp.S
index b1449a93..d589a165 100644
--- a/jmp.S
+++ b/jmp.S
@@ -55,6 +55,12 @@ NAME: ;
 NAME: ;
 #endif
 
+#if __arm__
+#define SIGIL() %
+#else
+#define SIGIL() @
+#endif
+
 #if __i386__
 
 #define JEIP  0
@@ -238,3 +244,9 @@ DEFUN(jmp_restore)
 #else
 #error port me!
 #endif
+
+#ifndef __APPLE__
+/* This is needed so our assembly code doesn't cause
+   the program to require an executable stack! */
+.section .note.GNU-stack,"",SIGIL()progbits
+#endif
-- 
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