[maemo-commits] [maemo-commits] r14939 - projects/haf/trunk/glib

[From: subversion at stage.maemo.org]

Author: xan
Date: 2007-12-10 15:02:07 +0200 (Mon, 10 Dec 2007)
New Revision: 14939

Added:
   projects/haf/trunk/glib/armv6-test.c
Log:
Add test.


Added: projects/haf/trunk/glib/armv6-test.c
===================================================================
--- projects/haf/trunk/glib/armv6-test.c	2007-12-10 13:00:53 UTC (rev 14938)
+++ projects/haf/trunk/glib/armv6-test.c	2007-12-10 13:02:07 UTC (rev 14939)
@@ -0,0 +1,73 @@
+/*
+
+    Test for ARMv6 instruction set support.
+
+    Copyright (C) 2007 Nokia Corporation.
+
+    Contact: Jussi Laako <jussi.laako at nokia.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+/* this test breaks the POSIX rules on setjmp()/longjmp() a bit, but it
+ * happens to work
+ */
+
+#include <stdio.h>
+#include <signal.h>
+#include <setjmp.h>
+
+void set (volatile int *atomic, int newval)
+{
+  unsigned long result;
+
+  do {
+    asm volatile (
+      "ldrex %0, [%1]\n"
+      "strex %0, %2, [%1]\n"
+      : "=&r" (result)
+      : "r" (atomic), "r" (newval)
+      : "cc", "memory");
+  } while (result);
+}
+
+static jmp_buf errjmp;
+
+void sig_handler (int signo)
+{
+	switch (signo)
+	{
+		case SIGILL:
+			longjmp(errjmp, 1);
+			break;
+	}
+}
+	
+int main (int argc, char *argv[])
+{
+	volatile int a;
+
+	signal(SIGILL, sig_handler);
+	if (setjmp(errjmp) == 0)
+	{
+		set(&a, 7);
+		return 0;
+	}
+	signal(SIGILL, SIG_DFL);
+
+	return 1;
+}
+