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{
Copyright (c) 1998-2009 by Jonas Maebe and David Zhang
This unit contains several types and constants necessary for the
optimizer to work on the MIPSEL architecture
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
Unit aoptcpub; { Assembler OPTimizer CPU specific Base }
{$i fpcdefs.inc}
{ enable the following define if memory references can have a scaled index }
{ define RefsHaveScale}
{ enable the following define if memory references can have a segment }
{ override }
{ define RefsHaveSegment}
Interface
Uses
cpubase,aasmcpu,AOptBase;
Type
{ type of a normal instruction }
TInstr = Taicpu;
PInstr = ^TInstr;
{ ************************************************************************* }
{ **************************** TCondRegs ********************************** }
{ ************************************************************************* }
{ Info about the conditional registers }
TCondRegs = Object
Constructor Init;
Destructor Done;
End;
{ ************************************************************************* }
{ **************************** TAoptBaseCpu ******************************* }
{ ************************************************************************* }
TAoptBaseCpu = class(TAoptBase)
End;
{ ************************************************************************* }
{ ******************************* Constants ******************************* }
{ ************************************************************************* }
Const
{ the maximum number of things (registers, memory, ...) a single instruction }
{ changes }
MaxCh = 3;
{Oper index of operand that contains the source (reference) with a load }
{instruction }
LoadSrc = 0;
{Oper index of operand that contains the destination (register) with a load }
{instruction }
LoadDst = 1;
{Oper index of operand that contains the source (register) with a store }
{instruction }
StoreSrc = 0;
{Oper index of operand that contains the destination (reference) with a load }
{instruction }
StoreDst = 1;
aopt_uncondjmp = A_BA;
aopt_condjmp = A_BC;
Implementation
{ ************************************************************************* }
{ **************************** TCondRegs ********************************** }
{ ************************************************************************* }
Constructor TCondRegs.init;
Begin
End;
Destructor TCondRegs.Done; {$ifdef inl} inline; {$endif inl}
Begin
End;
End.
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