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79 lines
1.7 KiB
ObjectPascal
79 lines
1.7 KiB
ObjectPascal
{
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Copyright (c) 1998-2022 by the Free Pascal development team
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Memory mapped IO helpers
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{$IFNDEF FPC_DOTTEDUNITS}
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unit mmio;
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{$ENDIF FPC_DOTTEDUNITS}
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interface
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procedure DUMMY(Count: DWord);
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procedure PUT32(Address: DWord; Value: DWord); inline;
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function GET32(Address: DWord) : DWord; inline;
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implementation
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procedure DUMMY(Count: DWord);
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var
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i : DWord;
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begin
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for i := 0 to Count do
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begin
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asm
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nop
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end;
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end;
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end;
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procedure PUT32(Address: DWord; Value: DWord); inline;
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VAR
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p: ^DWord;
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begin
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p := POINTER (Address);
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p^ := Value;
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end;
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function GET32(Address: DWord) : DWord; inline;
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VAR
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p: ^DWord;
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begin
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p := POINTER (Address);
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GET32 := p^;
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end;
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procedure PUT64(Address: QWord; Value: QWord); inline;
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VAR
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p: ^QWord;
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begin
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p := POINTER (Address);
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p^ := Value;
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end;
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function GET64(Address: QWord) : QWord; inline;
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VAR
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p: ^QWord;
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begin
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p := POINTER (Address);
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GET64 := p^;
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end;
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end.
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