From: Kai Tietz <kai.tietz@onevision.com>
Date: Tue, 8 Apr 2008 09:38:15 +0000 (+0000)
Subject: Enable trampoline code for nx-protected stack Windows.
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0b03b302ae4b9a2785e5011f5fa4c2c198a8eb4b;p=platform%2Fupstream%2Fgcc.git

Enable trampoline code for nx-protected stack Windows.

	* config/i386/mingw32.h (ENABLE_EXECUTE_STACK): New.
	(MINGW_ENABLE_EXECUTE_STACK): New.
	(IN_LIBGCC2): For libgcc include windows.h file for
	function declarations.

From-SVN: r134089
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index af44893..05949d1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2008-04-08  Kai Tietz  <kai.tietz@onevision.com>
+
+	* config/i386/mingw32.h (ENABLE_EXECUTE_STACK): New.
+	(MINGW_ENABLE_EXECUTE_STACK): New.
+	(IN_LIBGCC2): For libgcc include windows.h file for
+	function declarations.
+
 2008-04-08  Hans-Peter Nilsson  <hp@axis.com>
 
 	* config/cris/cris.c (cris_address_cost): For a PLUS, swap tem1
diff --git a/gcc/config/i386/mingw32.h b/gcc/config/i386/mingw32.h
index 890a096..200569e 100644
--- a/gcc/config/i386/mingw32.h
+++ b/gcc/config/i386/mingw32.h
@@ -164,6 +164,27 @@ do {						         \
 #undef TARGET_USE_JCR_SECTION
 #define TARGET_USE_JCR_SECTION 1
 
+#undef MINGW_ENABLE_EXECUTE_STACK
+#define MINGW_ENABLE_EXECUTE_STACK     \
+extern void __enable_execute_stack (void *);    \
+void         \
+__enable_execute_stack (void *addr)					\
+{									\
+  MEMORY_BASIC_INFORMATION b;						\
+  if (!VirtualQuery (addr, &b, sizeof(b)))				\
+    abort ();								\
+  VirtualProtect (b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE,	\
+		  &b.Protect);						\
+}
+
+#undef ENABLE_EXECUTE_STACK
+#define ENABLE_EXECUTE_STACK MINGW_ENABLE_EXECUTE_STACK
+
+
+#ifdef IN_LIBGCC2
+#include <windows.h>
+#endif
+
 #if !TARGET_64BIT
 #define MD_UNWIND_SUPPORT "config/i386/w32-unwind.h"
 #endif