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113 lines
3.6 KiB
ObjectPascal
113 lines
3.6 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 routines to create a pass-through high-level code
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generator. This is used by most regular code generators.
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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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aasmbase, aasmdata,
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cgbase, cgutils,
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symtype,symdef,
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parabase, hlcgobj, hlcg2ll;
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type
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thlcgmips = class(thlcg2ll)
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function a_call_name(list: TAsmList; pd: tprocdef; const s: TSymStr; forceresdef: tdef; weak: boolean): tcgpara; override;
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procedure a_call_reg(list : TAsmList;pd : tabstractprocdef;reg : tregister);override;
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procedure a_call_ref(list : TAsmList;pd : tabstractprocdef;const ref : treference);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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aasmtai,
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cutils,
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cgobj,
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cpubase,
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cgcpu;
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function thlcgmips.a_call_name(list: TAsmList; pd: tprocdef; const s: TSymStr; forceresdef: tdef; weak: boolean): tcgpara;
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var
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ref : treference;
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begin
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if pd.proccalloption=pocall_cdecl then
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begin
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{ Use $gp/$t9 registers as the code might be in a shared library }
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reference_reset(ref,sizeof(aint));
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ref.symbol:=current_asmdata.RefAsmSymbol('_gp');
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list.concat(tai_comment.create(strpnew('Using PIC code for a_call_name')));
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cg.a_loadaddr_ref_reg(list,ref,NR_GP);
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reference_reset(ref,sizeof(aint));
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ref.symbol:=current_asmdata.RefAsmSymbol(s);
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ref.base:=NR_GP;
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ref.refaddr:=addr_pic;
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cg.a_loadaddr_ref_reg(list,ref,NR_PIC_FUNC);
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cg.a_call_reg(list,NR_PIC_FUNC);
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end
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else
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cg.a_call_name(list,s,weak);
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{ set the result location }
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result:=get_call_result_cgpara(pd,forceresdef);
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end;
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procedure thlcgmips.a_call_reg(list: TAsmList; pd: tabstractprocdef; reg: tregister);
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begin
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if (pd.proccalloption=pocall_cdecl) and (reg<>NR_PIC_FUNC) then
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begin
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list.concat(tai_comment.create(strpnew('Using PIC code for a_call_reg')));
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{ Use $t9 register as the code might be in a shared library }
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cg.a_load_reg_reg(list,OS_32,OS_32,reg,NR_PIC_FUNC);
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cg.a_call_reg(list,NR_PIC_FUNC);
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end
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else
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cg.a_call_reg(list,reg);
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end;
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procedure thlcgmips.a_call_ref(list: TAsmList; pd: tabstractprocdef; const ref: treference);
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begin
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if pd.proccalloption =pocall_cdecl then
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begin
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{ Use $t9 register as the code might be in a shared library }
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list.concat(tai_comment.create(strpnew('Using PIC code for a_call_ref')));
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cg.a_loadaddr_ref_reg(list,ref,NR_PIC_FUNC);
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cg.a_call_reg(list,NR_PIC_FUNC);
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end
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else
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cg.a_call_ref(list,ref);
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end;
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procedure create_hlcodegen;
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begin
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hlcg:=thlcgmips.create;
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create_codegen;
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end;
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end.
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