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+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+/*
+ * Implements osl_[increment|decrement]InterlockedCount:
+ * sparcv9/sparcv8plus architecture: use the "cas" instruction
+ *
+ * 32 bit mode with v8plus support or 64 bit mode:
+ * sparcv9 mode is implied. Assemble with -xarch=v8plus (32 bit) or
+ * -xarch=v9 (64 bit).
+ *
+ */
+
+#if !defined(__sparcv8plus) && !defined(__sparcv9) && !defined(__sparc_v9__)
+
+#error LibreOffice requires SPARCv8plus or SPARCv9 CPU with "cas" instruction
+
+#endif
+
+.section ".text"
+ .global osl_incrementInterlockedCount
+ .align 8
+
+! Implements osl_[increment|decrement]InterlockedCount with sparcv9(sparcv8plus) "cas"
+! instruction.
+
+osl_incrementInterlockedCount:
+
+1: ld [%o0], %o1
+ add %o1, 1, %o2
+! allow linux to build for v8
+ .word 0xD5E21009
+! cas [%o0], %o1, %o2
+ cmp %o1, %o2
+ bne 1b
+ nop ! delay slot
+ retl
+ add %o2, 1, %o0 ! delay slot
+
+ .type osl_incrementInterlockedCount,#function
+ .size osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
+
+
+.section ".text"
+ .global osl_decrementInterlockedCount
+ .align 8
+
+osl_decrementInterlockedCount:
+
+1: ld [%o0], %o1
+ sub %o1, 1, %o2
+! allow linux to build for v8
+ .word 0xD5E21009
+! cas [%o0], %o1, %o2
+ cmp %o1, %o2
+ bne 1b
+ nop ! delay slot
+ retl
+ sub %o2, 1, %o0 ! delay slot
+
+ .type osl_decrementInterlockedCount,#function
+ .size osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
+