{
    This file is part of the Free Pascal run time library.

    Copyright (c) 2004 by Florian Klaempfl
    member of the Free Pascal development team

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program 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.

 **********************************************************************}

{ ---------------------------------------------------------------------
  This include contains cpu-specific routines
  ---------------------------------------------------------------------}

function InterLockedDecrement (var Target: longint) : longint; assembler;
asm
{$ifdef win64}
        movq    %rcx,%rax
{$else win64}
        movq    %rdi,%rax
{$endif win64}
        movl    $-1,%edx
        xchgq   %rdx,%rax
        lock
        xaddl   %eax, (%rdx)
        decl    %eax
end;


function InterLockedIncrement (var Target: longint) : longint; assembler;
asm
{$ifdef win64}
        movq    %rcx,%rax
{$else win64}
        movq    %rdi,%rax
{$endif win64}
        movl    $1,%edx
        xchgq   %rdx,%rax
        lock
        xaddl   %eax, (%rdx)
        incl    %eax
end;


function InterLockedExchange (var Target: longint;Source : longint) : longint; assembler;
asm
{$ifdef win64}
        xchgl   (%rcx),%edx
        movl    %edx,%eax
{$else win64}
        xchgl   (%rdi),%esi
        movl    %esi,%eax
{$endif win64}
end;


function InterLockedExchangeAdd (var Target: longint;Source : longint) : longint; assembler;
asm
{$ifdef win64}
        xchgq   %rcx,%rdx
        lock
        xaddl   %ecx, (%rdx)
        movl    %ecx,%eax
{$else win64}
        xchgq   %rdi,%rsi
        lock
        xaddl   %edi, (%rsi)
        movl    %edi,%eax
{$endif win64}
end;