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79 lines
2.3 KiB
ObjectPascal
79 lines
2.3 KiB
ObjectPascal
{
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Copyright (c) 1998-2010 by Florian Klaempfl and Jonas Maebe
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Member of the Free Pascal development team
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This unit contains high-level code generator support for riscv64
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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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unit hlcgcpu;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,
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aasmdata,
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symtype,
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cgbase,cgutils,hlcgobj,hlcgrv;
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type
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thlcgcpu = class(thlcgriscv)
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procedure a_load_const_subsetreg(list: TAsmlist; tosubsetsize: tdef; a: tcgint; const sreg: tsubsetregister); override;
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end;
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procedure create_hlcodegen;
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implementation
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uses
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cpubase,aasmcpu,
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defutil,
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cgobj,cgcpu;
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{ thlcgcpu }
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procedure thlcgcpu.a_load_const_subsetreg(list: TAsmlist; tosubsetsize: tdef; a: tcgint; const sreg: tsubsetregister);
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var
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tmpreg : TRegister;
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begin
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{$ifdef extdebug}
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list.concat(tai_comment.create(strpnew('a_load_const_subsetreg subsetregsize = ' + cgsize2string(sreg.subsetregsize) + ' subsetsize = ' + cgsize2string(def_cgsize(subsetsize)) + ' startbit = ' + intToStr(sreg.startbit) + ' a = ' + intToStr(a))));
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{$endif}
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{ loading the constant into the lowest bits of a temp register and then inserting is
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better than loading some usually large constants and do some masking and shifting on riscv64 }
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tmpreg:=getintregister(list,tosubsetsize);
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a_load_const_reg(list,tosubsetsize,a,tmpreg);
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a_load_reg_subsetreg(list,tosubsetsize,tosubsetsize,tmpreg,sreg);
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end;
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procedure create_hlcodegen;
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begin
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hlcg:=thlcgcpu.create;
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create_codegen;
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end;
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begin
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chlcgobj:=thlcgcpu;
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end.
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