sal/osl/unx/asm/interlck_sparc.s

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19
  20 /*
  21  * Implements osl_[increment|decrement]InterlockedCount:
  22  * sparcv9/sparcv8plus architecture:    use the "cas"  instruction
  23  *
  24  * 32 bit mode with v8plus support or 64 bit mode:
  25  * sparcv9 mode is implied. Assemble with -xarch=v8plus (32 bit) or
  26  * -xarch=v9 (64 bit).
  27  *
  28  */
  29
  30 #if !defined(__sparcv8plus) && !defined(__sparcv9) && !defined(__sparc_v9__)
  31
  32 #error LibreOffice requires SPARCv8plus or SPARCv9 CPU with "cas" instruction
  33
  34 #endif
  35
  36 .section   ".text"
  37  .global  osl_incrementInterlockedCount
  38  .align   8
  39
  40 !   Implements osl_[increment|decrement]InterlockedCount with sparcv9(sparcv8plus) "cas"
  41 !   instruction.
  42
  43 osl_incrementInterlockedCount:
  44
  45 1:      ld      [%o0], %o1
  46         add     %o1, 1, %o2
  47 !       allow linux to build for v8
  48         .word 0xD5E21009
  49 !       cas     [%o0], %o1, %o2
  50         cmp     %o1, %o2
  51         bne     1b
  52         nop                         ! delay slot
  53         retl
  54         add     %o2, 1, %o0         ! delay slot
  55
  56  .type  osl_incrementInterlockedCount,#function
  57  .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
  58
  59
  60 .section   ".text"
  61  .global  osl_decrementInterlockedCount
  62  .align   8
  63
  64 osl_decrementInterlockedCount:
  65
  66 1:      ld      [%o0], %o1
  67         sub     %o1, 1, %o2
  68 !       allow linux to build for v8
  69         .word 0xD5E21009
  70 !       cas     [%o0], %o1, %o2
  71         cmp     %o1, %o2
  72         bne     1b
  73         nop                         ! delay slot
  74         retl
  75         sub     %o2, 1, %o0         ! delay slot
  76
  77  .type  osl_decrementInterlockedCount,#function
  78  .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
  79