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/**************************************************************
*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#include "system.h"
#include <osl/interlck.h>
#include <osl/diagnose.h>
extern int osl_isSingleCPU;
/* For all Intel x86 above x486 we use a spezial inline assembler implementation.
The main reason is that WIN9? does not return the result of the operation.
Instead there is only returned a value greater than zero is the increment
result is greater than zero, but not the the result of the addition.
For Windows NT the native function could be used, because the correct result
is returned. Because of simpler code maintenance and performace reasons we use
on every x86-Windows-Platform the inline assembler implementation.
*/
/*****************************************************************************/
/* osl_incrementInterlockedCount */
/*****************************************************************************/
oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
#ifdef _M_IX86
#ifdef __MINGW32__
{
asm
(
" movl %0, %%ecx\n"
" movl $1, %%eax\n"
" movl %1, %%edx\n"
" cmpl $0, %%edx\n"
" je 1f\n"
" xadd %%eax, (%%ecx)\n"
" jmp 2f\n"
"1:\n"
" lock xadd %%eax, (%%ecx)\n"
"2:\n"
" incl %%eax\n"
::"m"(pCount),"m"(osl_isSingleCPU)
);
}
#else
#pragma warning(disable: 4035)
{
__asm
{
mov ecx, pCount
mov eax, 1
mov edx, osl_isSingleCPU
cmp edx, 0
je is_not_single
xadd dword ptr [ecx],eax
jmp cont
is_not_single:
lock xadd dword ptr [ecx],eax
cont:
inc eax
}
}
#pragma warning(default: 4035)
#endif
#else
#pragma message("WARNING: Using system InterlockedIncrement")
{
return (InterlockedIncrement(pCount));
}
#endif
/*****************************************************************************/
/* osl_decrementInterlockedCount */
/*****************************************************************************/
oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
#ifdef _M_IX86
#ifdef __MINGW32__
{
asm
(
" movl %0, %%ecx\n"
" orl $-1, %%eax\n"
" movl %1, %%edx\n"
" cmpl $0, %%edx\n"
" je 1f\n"
" xadd %%eax, (%%ecx)\n"
" jmp 2f\n"
"1:\n"
" lock xadd %%eax, (%%ecx)\n"
"2:\n"
" decl %%eax\n"
::"m"(pCount),"m"(osl_isSingleCPU)
);
}
#else
#pragma warning(disable: 4035)
{
__asm
{
mov ecx, pCount
or eax, -1
mov edx, osl_isSingleCPU
cmp edx, 0
je is_not_single
xadd dword ptr [ecx],eax
jmp cont
is_not_single:
lock xadd dword ptr [ecx],eax
cont:
dec eax
}
}
#pragma warning(default: 4035)
#endif
#else
#pragma message("WARNING: Using system InterlockedDecrement")
{
return (InterlockedDecrement(pCount));
}
#endif
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