gcconfig.h: use LINUX_STACKBOTTOM so it works with Linux 2.6, reactivate MPROTECT_VDB

2007-02-05  Roman Zippel <zippel@linux-m68k.org>

	* boehm-gc/include/private/gcconfig.h: use LINUX_STACKBOTTOM so
	it works with Linux 2.6, reactivate MPROTECT_VDB
	* boehm-gc/pthread_stop_world.c: save all register
	on signal entry

From-SVN: r121606

boehm-gc/ChangeLog

+2007-02-05  Roman Zippel <zippel@linux-m68k.org>
+
+	* boehm-gc/include/private/gcconfig.h: use LINUX_STACKBOTTOM so
+	it works with Linux 2.6, reactivate MPROTECT_VDB
+	* boehm-gc/pthread_stop_world.c: save all register
+	on signal entry
+
 2007-01-24  Andreas Tobler  <a.tobler@schweiz.org>
 
 	* os_dep.c (defined(MPROTECT_VDB) && defined(DARWIN)): Moved recently

boehm-gc/include/private/gcconfig.h

@@ -672,10 +672,10 @@
 #   endif
 #   ifdef LINUX
 #       define OS_TYPE "LINUX"
-#       define STACKBOTTOM ((ptr_t)0xf0000000)
+#       define LINUX_STACKBOTTOM
 #       define USE_GENERIC_PUSH_REGS
 		/* We never got around to the assembly version. */
-/* #       define MPROTECT_VDB - Reported to not work  9/17/01 */
+#       define MPROTECT_VDB
 #       ifdef __ELF__
 #            define DYNAMIC_LOADING
 #	     include <features.h>

boehm-gc/pthread_stop_world.c

@@ -124,7 +124,7 @@ sem_t GC_suspend_ack_sem;
 
 void GC_suspend_handler_inner(ptr_t sig_arg);
 
-#if defined(IA64) || defined(HP_PA)
+#if defined(IA64) || defined(HP_PA) || defined(M68K)
 extern void GC_with_callee_saves_pushed();
 
 void GC_suspend_handler(int sig)