# HG changeset patch
# User roland
# Date 1456244311 -3600
# Node ID 146b6abc875f89a0f9cbdf35ff0a7e9015209d85
# Parent  7a83de7aabcaaf3c318a842f9894861241ecfa28
8148353: [linux-sparc] Crash in libawt.so on Linux SPARC
Summary: gcc expects clean 32 bit int in 64 bit register on function entry
Reviewed-by: kvn, dlong

diff -r 7a83de7aabca -r 146b6abc875f hotspot/make/test/JtregNative.gmk
--- a/hotspot/make/test/JtregNative.gmk	Tue Feb 23 22:09:41 2016 +0300
+++ b/hotspot/make/test/JtregNative.gmk	Tue Feb 23 17:18:31 2016 +0100
@@ -48,6 +48,7 @@
     $(HOTSPOT_TOPDIR)/test/runtime/SameObject \
     $(HOTSPOT_TOPDIR)/test/compiler/floatingpoint/ \
     $(HOTSPOT_TOPDIR)/test/compiler/calls \
+    $(HOTSPOT_TOPDIR)/test/compiler/native \
     #
 
 # Add conditional directories here when needed.
diff -r 7a83de7aabca -r 146b6abc875f hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Tue Feb 23 22:09:41 2016 +0300
+++ b/hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Tue Feb 23 17:18:31 2016 +0100
@@ -1349,9 +1349,12 @@
     }
   } else if (dst.first()->is_stack()) {
     // reg to stack
-    __ st_ptr(src.first()->as_Register(), SP, reg2offset(dst.first()) + STACK_BIAS);
+    // Some compilers (gcc) expect a clean 32 bit value on function entry
+    __ signx(src.first()->as_Register(), L5);
+    __ st_ptr(L5, SP, reg2offset(dst.first()) + STACK_BIAS);
   } else {
-    __ mov(src.first()->as_Register(), dst.first()->as_Register());
+    // Some compilers (gcc) expect a clean 32 bit value on function entry
+    __ signx(src.first()->as_Register(), dst.first()->as_Register());
   }
 }
 
diff -r 7a83de7aabca -r 146b6abc875f hotspot/test/compiler/native/TestDirtyInt.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/native/TestDirtyInt.java	Tue Feb 23 17:18:31 2016 +0100
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @run main/native TestDirtyInt
+ */
+public class TestDirtyInt {
+    static {
+        System.loadLibrary("TestDirtyInt");
+    }
+
+    native static int test(int v);
+
+    static int compiled(int v) {
+        return test(v<<2);
+    }
+
+    static public void main(String[] args) {
+        for (int i = 0; i < 20000; i++) {
+            int res = compiled(Integer.MAX_VALUE);
+            if (res != 0x42) {
+                throw new RuntimeException("Test failed");
+            }
+        }
+    }
+}
diff -r 7a83de7aabca -r 146b6abc875f hotspot/test/compiler/native/libTestDirtyInt.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/native/libTestDirtyInt.c	Tue Feb 23 17:18:31 2016 +0100
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "jni.h"
+#include <stdio.h>
+
+static int array = 0x42;
+
+JNIEXPORT jint JNICALL Java_TestDirtyInt_test(JNIEnv* env, jclass jclazz, jint v)
+{
+  int* ptr = &array + v + 4;
+  return *ptr;
+}