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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
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