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https://gitlab.com/freepascal.org/fpc/source.git
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1696 lines
75 KiB
ObjectPascal
1696 lines
75 KiB
ObjectPascal
{
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Id: ncgcal.pas,v 1.10 2002/08/17 09:23:35 florian Exp $
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Copyright (c) 1998-2002 by Florian Klaempfl
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Generate i386 assembler for in call nodes
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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 bymethodpointer
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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 ncgcal;
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{$i fpcdefs.inc}
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interface
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{ $define AnsiStrRef}
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uses
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cpubase,
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globtype,
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symdef,node,ncal;
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type
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tcgcallparanode = class(tcallparanode)
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procedure secondcallparan(push_from_left_to_right:boolean;calloption:tproccalloption;
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para_alignment,para_offset : longint);override;
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end;
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tcgcallnode = class(tcallnode)
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protected
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funcretref : treference;
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refcountedtemp : treference;
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procedure handle_return_value(inlined,extended_new:boolean);
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procedure load_framepointer;virtual;abstract;
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procedure extra_interrupt_code;virtual;
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public
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procedure pass_2;override;
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end;
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tcgprocinlinenode = class(tprocinlinenode)
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procedure pass_2;override;
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end;
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implementation
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uses
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systems,
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cutils,verbose,globals,
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symconst,symbase,symsym,symtable,defutil,paramgr,
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{$ifdef GDB}
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{$ifdef delphi}
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sysutils,
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{$else}
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strings,
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{$endif}
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gdb,
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{$endif GDB}
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cginfo,cgbase,pass_2,
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cpuinfo,cpupi,aasmbase,aasmtai,aasmcpu,
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nmem,nld,ncnv,
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{$ifdef i386}
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cga,
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{$endif i386}
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cg64f32,ncgutil,cgobj,tgobj,regvars,rgobj,rgcpu,cgcpu;
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{*****************************************************************************
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TCGCALLPARANODE
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*****************************************************************************}
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procedure tcgcallparanode.secondcallparan(push_from_left_to_right:boolean;calloption:tproccalloption;para_alignment,para_offset : longint);
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{$ifndef VS_HIDDEN}
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{ goes to pass 1 }
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procedure maybe_push_high;
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begin
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{ open array ? }
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{ defcoll.data can be nil for read/write }
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if assigned(paraitem.paratype.def) and
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assigned(hightree) then
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begin
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secondpass(hightree);
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{ this is a longint anyway ! }
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push_value_para(hightree,calloption,para_offset,4,paraitem.paraloc);
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end;
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end;
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{$endif VS_HIDDEN}
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var
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otlabel,oflabel : tasmlabel;
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{ temporary variables: }
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tempdeftype : tdeftype;
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tmpreg : tregister;
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href : treference;
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begin
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{ push from left to right if specified }
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if push_from_left_to_right and assigned(right) then
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begin
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if (nf_varargs_para in flags) then
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tcallparanode(right).secondcallparan(push_from_left_to_right,
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calloption,para_alignment,para_offset)
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else
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tcallparanode(right).secondcallparan(push_from_left_to_right,
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calloption,para_alignment,para_offset);
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end;
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otlabel:=truelabel;
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oflabel:=falselabel;
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objectlibrary.getlabel(truelabel);
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objectlibrary.getlabel(falselabel);
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secondpass(left);
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{ handle varargs first, because defcoll is not valid }
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if (nf_varargs_para in flags) then
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begin
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if paramanager.push_addr_param(left.resulttype.def,calloption) then
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begin
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inc(pushedparasize,4);
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cg.a_paramaddr_ref(exprasmlist,left.location.reference,paraitem.paraloc);
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location_release(exprasmlist,left.location);
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end
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else
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push_value_para(left,calloption,para_offset,para_alignment,paraitem.paraloc);
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end
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{ filter array constructor with c styled args }
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else if is_array_constructor(left.resulttype.def) and (nf_cargs in left.flags) then
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begin
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{ nothing, everything is already pushed }
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end
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{ in codegen.handleread.. paraitem.data is set to nil }
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else if assigned(paraitem.paratype.def) and
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(paraitem.paratype.def.deftype=formaldef) then
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begin
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{ allow passing of a constant to a const formaldef }
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if (paraitem.paratyp=vs_const) and
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(left.location.loc=LOC_CONSTANT) then
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location_force_mem(exprasmlist,left.location);
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{ allow @var }
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inc(pushedparasize,4);
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if (left.nodetype=addrn) and
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(not(nf_procvarload in left.flags)) then
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begin
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if calloption=pocall_inline then
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begin
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reference_reset_base(href,procinfo.framepointer,para_offset-pushedparasize);
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cg.a_load_loc_ref(exprasmlist,left.location,href);
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end
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else
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cg.a_param_loc(exprasmlist,left.location,paraitem.paraloc);
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location_release(exprasmlist,left.location);
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end
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else
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begin
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if not(left.location.loc in [LOC_CREFERENCE,LOC_REFERENCE]) then
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begin
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CGMessage(type_e_mismatch)
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end
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else
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begin
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if calloption=pocall_inline then
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begin
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tmpreg:=cg.get_scratch_reg_address(exprasmlist);
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cg.a_loadaddr_ref_reg(exprasmlist,left.location.reference,tmpreg);
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reference_reset_base(href,procinfo.framepointer,para_offset-pushedparasize);
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cg.a_load_reg_ref(exprasmlist,OS_ADDR,tmpreg,href);
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cg.free_scratch_reg(exprasmlist,tmpreg);
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end
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else
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cg.a_paramaddr_ref(exprasmlist,left.location.reference,paraitem.paraloc);
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location_release(exprasmlist,left.location);
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end;
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end;
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end
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{ handle call by reference parameter }
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else if (paraitem.paratyp in [vs_var,vs_out]) then
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begin
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if (left.location.loc<>LOC_REFERENCE) then
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begin
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{ passing self to a var parameter is allowed in
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TP and delphi }
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if not((left.location.loc=LOC_CREFERENCE) and
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(left.nodetype=selfn)) then
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internalerror(200106041);
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end;
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{$ifdef unused}
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if not push_from_left_to_right then
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{$endif unused}
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{$ifndef VS_HIDDEN}
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maybe_push_high;
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{$endif VS_HIDDEN}
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if (paraitem.paratyp=vs_out) and
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assigned(paraitem.paratype.def) and
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not is_class(paraitem.paratype.def) and
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paraitem.paratype.def.needs_inittable then
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cg.g_finalize(exprasmlist,paraitem.paratype.def,left.location.reference,false);
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inc(pushedparasize,4);
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if calloption=pocall_inline then
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begin
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tmpreg:=cg.get_scratch_reg_address(exprasmlist);
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cg.a_loadaddr_ref_reg(exprasmlist,left.location.reference,tmpreg);
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reference_reset_base(href,procinfo.framepointer,para_offset-pushedparasize);
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cg.a_load_reg_ref(exprasmlist,OS_ADDR,tmpreg,href);
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cg.free_scratch_reg(exprasmlist,tmpreg);
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end
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else
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cg.a_paramaddr_ref(exprasmlist,left.location.reference,paraitem.paraloc);
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location_release(exprasmlist,left.location);
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{$ifdef unused}
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if push_from_left_to_right then
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maybe_push_high;
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{$endif unused}
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end
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else
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begin
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tempdeftype:=resulttype.def.deftype;
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if tempdeftype=filedef then
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CGMessage(cg_e_file_must_call_by_reference);
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{ open array must always push the address, this is needed to
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also push addr of small open arrays and with cdecl functions (PFV) }
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if (
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assigned(paraitem.paratype.def) and
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(is_open_array(paraitem.paratype.def) or
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is_array_of_const(paraitem.paratype.def))
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) or
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(
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paramanager.push_addr_param(resulttype.def,calloption)
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) then
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begin
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if not(left.location.loc in [LOC_CREFERENCE,LOC_REFERENCE]) then
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begin
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{ allow passing nil to a procvardef (methodpointer) }
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(* if (left.nodetype=typeconvn) and
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(left.resulttype.def.deftype=procvardef) and
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(ttypeconvnode(left).left.nodetype=niln) then
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*)
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if (left.location.size <> OS_NO) then
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begin
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tg.GetTemp(exprasmlist,tcgsize2size[left.location.size],tt_normal,href);
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if not (left.location.size in [OS_64,OS_S64]) then
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cg.a_load_loc_ref(exprasmlist,left.location,href)
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else
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cg64.a_load64_loc_ref(exprasmlist,left.location,href);
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location_reset(left.location,LOC_REFERENCE,left.location.size);
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left.location.reference:=href;
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end
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else
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internalerror(200204011);
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end;
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{$ifdef unused}
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if not push_from_left_to_right then
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{$endif unused}
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{$ifndef VS_HIDDEN}
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maybe_push_high;
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{$endif VS_HIDDEN}
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inc(pushedparasize,4);
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if calloption=pocall_inline then
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begin
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tmpreg:=cg.get_scratch_reg_address(exprasmlist);
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cg.a_loadaddr_ref_reg(exprasmlist,left.location.reference,tmpreg);
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reference_reset_base(href,procinfo.framepointer,para_offset-pushedparasize);
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cg.a_load_reg_ref(exprasmlist,OS_ADDR,tmpreg,href);
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cg.free_scratch_reg(exprasmlist,tmpreg);
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end
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else
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cg.a_paramaddr_ref(exprasmlist,left.location.reference,paraitem.paraloc);
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location_release(exprasmlist,left.location);
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{$ifdef unused}
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if push_from_left_to_right then
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maybe_push_high;
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{$endif unused}
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end
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else
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begin
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push_value_para(left,calloption,
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para_offset,para_alignment,paraitem.paraloc);
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end;
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end;
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truelabel:=otlabel;
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falselabel:=oflabel;
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{ push from right to left }
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if not push_from_left_to_right and assigned(right) then
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begin
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if (nf_varargs_para in flags) then
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tcallparanode(right).secondcallparan(push_from_left_to_right,
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calloption,para_alignment,para_offset)
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else
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tcallparanode(right).secondcallparan(push_from_left_to_right,
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calloption,para_alignment,para_offset);
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end;
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end;
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{*****************************************************************************
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TCGCALLNODE
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*****************************************************************************}
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procedure tcgcallnode.extra_interrupt_code;
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begin
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{$ifdef i386}
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{ if the i386 ever uses tcgcal, we've to move this into an overriden method }
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emit_none(A_PUSHF,S_L);
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emit_reg(A_PUSH,S_L,R_CS);
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{$endif i386}
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end;
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procedure tcgcallnode.handle_return_value(inlined,extended_new:boolean);
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var
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cgsize : tcgsize;
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hregister : tregister;
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begin
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{ structured results are easy to handle.... }
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{ needed also when result_no_used !! }
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if paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
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begin
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location_reset(location,LOC_CREFERENCE,def_cgsize(resulttype.def));
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location.reference.symbol:=nil;
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location.reference:=funcretref;
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end
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else
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{ ansi/widestrings must be registered, so we can dispose them }
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if is_ansistring(resulttype.def) or
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is_widestring(resulttype.def) then
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begin
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location_reset(location,LOC_CREFERENCE,OS_ADDR);
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location.reference:=refcountedtemp;
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cg.a_reg_alloc(exprasmlist,accumulator);
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cg.a_load_reg_ref(exprasmlist,OS_ADDR,accumulator,location.reference);
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cg.a_reg_dealloc(exprasmlist,accumulator);
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end
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else
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{ we have only to handle the result if it is used }
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if (nf_return_value_used in flags) then
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begin
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case resulttype.def.deftype of
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enumdef,
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orddef :
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begin
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cgsize:=def_cgsize(resulttype.def);
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{ an object constructor is a function with boolean result }
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if (inlined or (right=nil)) and
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(procdefinition.proctypeoption=potype_constructor) then
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begin
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{$ifdef x86}
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if extended_new then
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cgsize:=OS_INT
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else
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begin
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cgsize:=OS_NO;
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{ this fails if popsize > 0 PM }
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location_reset(location,LOC_FLAGS,OS_NO);
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location.resflags:=F_NE;
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end;
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{$else x86}
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cgsize:=OS_INT
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{$endif x86}
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end;
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if cgsize<>OS_NO then
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begin
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location_reset(location,LOC_REGISTER,cgsize);
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cg.a_reg_alloc(exprasmlist,accumulator);
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{$ifndef cpu64bit}
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if cgsize in [OS_64,OS_S64] then
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begin
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cg.a_reg_alloc(exprasmlist,accumulatorhigh);
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location.registerhigh:=rg.getexplicitregisterint(exprasmlist,accumulatorhigh);
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location.registerlow:=rg.getexplicitregisterint(exprasmlist,accumulator);
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cg64.a_load64_reg_reg(exprasmlist,joinreg64(accumulator,accumulatorhigh),
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location.register64);
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end
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else
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{$endif cpu64bit}
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begin
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location.register:=rg.getexplicitregisterint(exprasmlist,accumulator);
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hregister:=rg.makeregsize(accumulator,cgsize);
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location.register:=rg.makeregsize(location.register,cgsize);
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cg.a_load_reg_reg(exprasmlist,cgsize,cgsize,hregister,location.register);
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end;
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end;
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end;
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floatdef :
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begin
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location_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def));
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location.register:=fpu_result_reg;
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{$ifdef x86}
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inc(trgcpu(rg).fpuvaroffset);
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{$endif x86}
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end;
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{$ifdef TEST_WIN32_RECORDS}
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recorddef :
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begin
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if (target_info.system=system_i386_win32) then
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begin
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location_reset(location,LOC_REFERENCE,def_cgsize(resulttype.def));
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tg.GetTemp(exprasmlist,resulttype.size,tt_normal,location);
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{$ifndef cpu64bit}
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if cgsize in [OS_64,OS_S64] then
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cg64.a_load64_reg_loc(exprasmlist,joinreg64(accumulator,accumulatorhigh),location)
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else
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{$endif cpu64bit}
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cg.a_load_reg_loc(exprasmlist,accumulator,location);
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end
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else
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internalerror(200211141);
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end;
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{$endif TEST_WIN32_RECORDS}
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else
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begin
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location_reset(location,LOC_REGISTER,OS_INT);
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location.register:=rg.getexplicitregisterint(exprasmlist,accumulator);
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,accumulator,location.register);
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end;
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end;
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end;
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end;
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procedure tcgcallnode.pass_2;
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var
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regs_to_push : tregisterset;
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unusedstate: pointer;
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pushed : tpushedsaved;
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tmpreg : tregister;
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hregister : tregister;
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hregister64 : tregister64;
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oldpushedparasize : longint;
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{ true if ESI must be loaded again after the subroutine }
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loadesi : boolean;
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{ true if a virtual method must be called directly }
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no_virtual_call : boolean;
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{ true if we produce a con- or destrutor in a call }
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is_con_or_destructor : boolean;
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{ true if a constructor is called again }
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extended_new : boolean;
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{ adress returned from an I/O-error }
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iolabel : tasmlabel;
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{ lexlevel count }
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i : longint;
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{ help reference pointer }
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href : treference;
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hrefvmt : treference;
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hp : tnode;
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pp : tbinarynode;
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params : tnode;
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inlined : boolean;
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inlinecode : tprocinlinenode;
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store_parast_fixup,
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para_alignment,
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para_offset : longint;
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cgsize : tcgsize;
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{ instruction for alignement correction }
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{ corr : paicpu;}
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{ we must pop this size also after !! }
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{ must_pop : boolean; }
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pop_size : longint;
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{$ifdef OPTALIGN}
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pop_esp : boolean;
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push_size : longint;
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{$endif OPTALIGN}
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pop_allowed : boolean;
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release_tmpreg : boolean;
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constructorfailed : tasmlabel;
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resultloc : tparalocation;
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returnref,
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pararef : treference;
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label
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dont_call;
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begin
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extended_new:=false;
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iolabel:=nil;
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inlinecode:=nil;
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inlined:=false;
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loadesi:=true;
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no_virtual_call:=false;
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rg.saveunusedstate(unusedstate);
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{ if we allocate the temp. location for ansi- or widestrings }
|
|
{ already here, we avoid later a push/pop }
|
|
if is_widestring(resulttype.def) then
|
|
begin
|
|
tg.GetTemp(exprasmlist,pointer_size,tt_widestring,refcountedtemp);
|
|
cg.g_decrrefcount(exprasmlist,resulttype.def,refcountedtemp);
|
|
end
|
|
else if is_ansistring(resulttype.def) then
|
|
begin
|
|
tg.GetTemp(exprasmlist,pointer_size,tt_ansistring,refcountedtemp);
|
|
cg.g_decrrefcount(exprasmlist,resulttype.def,refcountedtemp);
|
|
end;
|
|
|
|
if (procdefinition.proccalloption in [pocall_cdecl,pocall_cppdecl,pocall_stdcall]) then
|
|
para_alignment:=4
|
|
else
|
|
para_alignment:=aktalignment.paraalign;
|
|
|
|
if not assigned(procdefinition) then
|
|
exit;
|
|
|
|
{ Deciding whether we may still need the parameters happens next (JM) }
|
|
if assigned(left) then
|
|
params:=left.getcopy
|
|
else
|
|
params := nil;
|
|
|
|
if (procdefinition.proccalloption=pocall_inline) then
|
|
begin
|
|
inlined:=true;
|
|
inlinecode:=tprocinlinenode(right);
|
|
right:=nil;
|
|
{ set it to the same lexical level as the local symtable, becuase
|
|
the para's are stored there }
|
|
tprocdef(procdefinition).parast.symtablelevel:=aktprocdef.localst.symtablelevel;
|
|
if assigned(params) then
|
|
begin
|
|
inlinecode.para_size:=tprocdef(procdefinition).para_size(para_alignment);
|
|
tg.GetTemp(exprasmlist,inlinecode.para_size,tt_persistant,pararef);
|
|
inlinecode.para_offset:=pararef.offset;
|
|
end;
|
|
store_parast_fixup:=tprocdef(procdefinition).parast.address_fixup;
|
|
tprocdef(procdefinition).parast.address_fixup:=inlinecode.para_offset;
|
|
{$ifdef extdebug}
|
|
Comment(V_debug,
|
|
'inlined parasymtable is at offset '
|
|
+tostr(tprocdef(procdefinition).parast.address_fixup));
|
|
exprasmList.concat(tai_comment.Create(
|
|
strpnew('inlined parasymtable is at offset '
|
|
+tostr(tprocdef(procdefinition).parast.address_fixup))));
|
|
{$endif extdebug}
|
|
end;
|
|
{ only if no proc var }
|
|
if inlined or
|
|
not(assigned(right)) then
|
|
is_con_or_destructor:=(procdefinition.proctypeoption in [potype_constructor,potype_destructor]);
|
|
{ proc variables destroy all registers }
|
|
if (inlined or
|
|
(right=nil)) and
|
|
{ virtual methods too }
|
|
not(po_virtualmethod in procdefinition.procoptions) then
|
|
begin
|
|
if (cs_check_io in aktlocalswitches) and
|
|
(po_iocheck in procdefinition.procoptions) and
|
|
not(po_iocheck in aktprocdef.procoptions) then
|
|
begin
|
|
objectlibrary.getaddrlabel(iolabel);
|
|
cg.a_label(exprasmlist,iolabel);
|
|
end
|
|
else
|
|
iolabel:=nil;
|
|
|
|
{ save all used registers and possible registers
|
|
used for the return value }
|
|
regs_to_push := tprocdef(procdefinition).usedregisters;
|
|
if (not is_void(resulttype.def)) and
|
|
(not paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption)) then
|
|
begin
|
|
include(regs_to_push,accumulator);
|
|
{$ifndef cpu64bit}
|
|
if resulttype.def.size>sizeof(aword) then
|
|
include(regs_to_push,accumulatorhigh);
|
|
{$endif cpu64bit}
|
|
end;
|
|
rg.saveusedregisters(exprasmlist,pushed,regs_to_push);
|
|
|
|
{ give used registers through }
|
|
rg.usedinproc:=rg.usedinproc + tprocdef(procdefinition).usedregisters;
|
|
end
|
|
else
|
|
begin
|
|
regs_to_push := all_registers;
|
|
rg.saveusedregisters(exprasmlist,pushed,regs_to_push);
|
|
rg.usedinproc:=all_registers;
|
|
{ no IO check for methods and procedure variables }
|
|
iolabel:=nil;
|
|
end;
|
|
|
|
{ generate the code for the parameter and push them }
|
|
oldpushedparasize:=pushedparasize;
|
|
pushedparasize:=0;
|
|
pop_size:=0;
|
|
|
|
{$ifdef dummy}
|
|
{ no inc esp for inlined procedure
|
|
and for objects constructors PM }
|
|
if inlined or
|
|
((procdefinition.proctypeoption=potype_constructor) and
|
|
{ quick'n'dirty check if it is a class or an object }
|
|
(resulttype.def.deftype=orddef)) then
|
|
pop_allowed:=false
|
|
else
|
|
pop_allowed:=true;
|
|
if pop_allowed then
|
|
begin
|
|
{ Old pushedsize aligned on 4 ? }
|
|
i:=oldpushedparasize and 3;
|
|
if i>0 then
|
|
inc(pop_size,4-i);
|
|
{ This parasize aligned on 4 ? }
|
|
i:=procdefinition.para_size(para_alignment) and 3;
|
|
if i>0 then
|
|
inc(pop_size,4-i);
|
|
{ insert the opcode and update pushedparasize }
|
|
{ never push 4 or more !! }
|
|
pop_size:=pop_size mod 4;
|
|
if pop_size>0 then
|
|
begin
|
|
inc(pushedparasize,pop_size);
|
|
cg.a_const_reg(A_SUB,S_L,pop_size,R_ESP);
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) and
|
|
(exprasmList.first=exprasmList.last) then
|
|
exprasmList.concat(Tai_force_line.Create);
|
|
{$endif GDB}
|
|
end;
|
|
end;
|
|
{$endif dummy}
|
|
|
|
{$ifdef OPTALIGN}
|
|
if pop_allowed and (cs_align in aktglobalswitches) then
|
|
begin
|
|
pop_esp:=true;
|
|
push_size:=procdefinition.para_size(para_alignment);
|
|
{ !!!! here we have to take care of return type, self
|
|
and nested procedures
|
|
}
|
|
inc(push_size,12);
|
|
emit_reg_reg(A_MOV,S_L,R_ESP,R_EDI);
|
|
if (push_size mod 8)=0 then
|
|
emit_const_reg(A_AND,S_L,$fffffff8,R_ESP)
|
|
else
|
|
begin
|
|
emit_const_reg(A_SUB,S_L,push_size,R_ESP);
|
|
emit_const_reg(A_AND,S_L,$fffffff8,R_ESP);
|
|
emit_const_reg(A_SUB,S_L,push_size,R_ESP);
|
|
end;
|
|
emit_reg(A_PUSH,S_L,R_EDI);
|
|
end
|
|
else
|
|
pop_esp:=false;
|
|
{$endif OPTALIGN}
|
|
|
|
{ Push parameters }
|
|
if assigned(params) then
|
|
begin
|
|
{ be found elsewhere }
|
|
if inlined then
|
|
para_offset:=tprocdef(procdefinition).parast.address_fixup+
|
|
tprocdef(procdefinition).parast.datasize
|
|
else
|
|
para_offset:=0;
|
|
if not(inlined) and
|
|
assigned(right) then
|
|
tcallparanode(params).secondcallparan(
|
|
{ TParaItem(tabstractprocdef(right.resulttype.def).Para.first), }
|
|
(po_leftright in procdefinition.procoptions),procdefinition.proccalloption,
|
|
para_alignment,para_offset)
|
|
else
|
|
tcallparanode(params).secondcallparan(
|
|
{ TParaItem(procdefinition.Para.first), }
|
|
(po_leftright in procdefinition.procoptions),procdefinition.proccalloption,
|
|
para_alignment,para_offset);
|
|
end;
|
|
|
|
{ Allocate return value for inlined routines }
|
|
if inlined and
|
|
(resulttype.def.size>0) then
|
|
begin
|
|
tg.GetTemp(exprasmlist,Align(resulttype.def.size,aktalignment.paraalign),tt_persistant,returnref);
|
|
inlinecode.retoffset:=returnref.offset;
|
|
end;
|
|
|
|
{ Allocate return value when returned in argument }
|
|
if paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
|
|
begin
|
|
if assigned(funcretrefnode) then
|
|
begin
|
|
secondpass(funcretrefnode);
|
|
if codegenerror then
|
|
exit;
|
|
if (funcretrefnode.location.loc<>LOC_REFERENCE) then
|
|
internalerror(200204246);
|
|
funcretref:=funcretrefnode.location.reference;
|
|
end
|
|
else
|
|
begin
|
|
if inlined then
|
|
begin
|
|
tg.GetTemp(exprasmlist,resulttype.def.size,tt_persistant,funcretref);
|
|
{$ifdef extdebug}
|
|
Comment(V_debug,'function return value is at offset '
|
|
+tostr(funcretref.offset));
|
|
exprasmlist.concat(tai_comment.create(
|
|
strpnew('function return value is at offset '
|
|
+tostr(funcretref.offset))));
|
|
{$endif extdebug}
|
|
end
|
|
else
|
|
tg.GetTemp(exprasmlist,resulttype.def.size,tt_normal,funcretref);
|
|
end;
|
|
|
|
{ This must not be counted for C code
|
|
complex return address is removed from stack
|
|
by function itself ! }
|
|
{$ifdef OLD_C_STACK}
|
|
inc(pushedparasize,4); { lets try without it PM }
|
|
{$endif not OLD_C_STACK}
|
|
if inlined then
|
|
begin
|
|
hregister:=cg.get_scratch_reg_address(exprasmlist);
|
|
cg.a_loadaddr_ref_reg(exprasmlist,funcretref,hregister);
|
|
reference_reset_base(href,procinfo.framepointer,inlinecode.retoffset);
|
|
cg.a_load_reg_ref(exprasmlist,OS_ADDR,hregister,href);
|
|
cg.free_scratch_reg(exprasmlist,hregister);
|
|
end
|
|
else
|
|
cg.a_paramaddr_ref(exprasmlist,funcretref,
|
|
paramanager.getfuncretparaloc(procdefinition));
|
|
end;
|
|
|
|
{ procedure variable or normal function call ? }
|
|
if inlined or
|
|
(right=nil) then
|
|
begin
|
|
{ Normal function call }
|
|
|
|
{$ifdef dummy}
|
|
{ overloaded operator has no symtable }
|
|
{ push self }
|
|
if assigned(symtableproc) and
|
|
(symtableproc.symtabletype=withsymtable) then
|
|
begin
|
|
{ dirty trick to avoid the secondcall below }
|
|
methodpointer:=ccallparanode.create(nil,nil);
|
|
location_reset(methodpointer.location,LOC_REGISTER,OS_ADDR);
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
methodpointer.location.register:=R_ESI;
|
|
{ ARGHHH this is wrong !!!
|
|
if we can init from base class for a child
|
|
class that the wrong VMT will be
|
|
transfered to constructor !! }
|
|
methodpointer.resulttype:=
|
|
twithnode(twithsymtable(symtableproc).withnode).left.resulttype;
|
|
{ make a reference }
|
|
href:=twithnode(twithsymtable(symtableproc).withnode).withreference;
|
|
if ((not(nf_islocal in twithnode(twithsymtable(symtableproc).withnode).flags)) and
|
|
(not twithsymtable(symtableproc).direct_with)) or
|
|
is_class_or_interface(methodpointer.resulttype.def) then
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,self_pointer_reg)
|
|
else
|
|
cg.a_loadaddr_ref_reg(exprasmlist,href,self_pointer_reg);
|
|
end;
|
|
|
|
{ push self }
|
|
if assigned(symtableproc) and
|
|
((symtableproc.symtabletype=objectsymtable) or
|
|
(symtableproc.symtabletype=withsymtable)) then
|
|
begin
|
|
if assigned(methodpointer) then
|
|
begin
|
|
{
|
|
if methodpointer^.resulttype.def=classrefdef then
|
|
begin
|
|
two possibilities:
|
|
1. constructor
|
|
2. class method
|
|
|
|
end
|
|
else }
|
|
begin
|
|
case methodpointer.nodetype of
|
|
typen:
|
|
begin
|
|
{ direct call to inherited method }
|
|
if (po_abstractmethod in procdefinition.procoptions) then
|
|
begin
|
|
CGMessage(cg_e_cant_call_abstract_method);
|
|
goto dont_call;
|
|
end;
|
|
{ generate no virtual call }
|
|
no_virtual_call:=true;
|
|
|
|
if (sp_static in symtableprocentry.symoptions) then
|
|
begin
|
|
{ well lets put the VMT address directly into ESI }
|
|
{ it is kind of dirty but that is the simplest }
|
|
{ way to accept virtual static functions (PM) }
|
|
loadesi:=true;
|
|
{ if no VMT just use $0 bug0214 PM }
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
if not(oo_has_vmt in tobjectdef(methodpointer.resulttype.def).objectoptions) then
|
|
cg.a_load_const_reg(exprasmlist,OS_ADDR,0,self_pointer_reg)
|
|
else
|
|
begin
|
|
reference_reset_symbol(href,objectlibrary.newasmsymbol(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
|
|
cg.a_loadaddr_ref_reg(exprasmlist,href,self_pointer_reg);
|
|
end;
|
|
{ emit_reg(A_PUSH,S_L,R_ESI);
|
|
this is done below !! }
|
|
end
|
|
else
|
|
{ this is a member call, so ESI isn't modfied }
|
|
loadesi:=false;
|
|
|
|
{ a class destructor needs a flag }
|
|
if is_class(tobjectdef(methodpointer.resulttype.def)) and
|
|
(procdefinition.proctypeoption=potype_destructor) then
|
|
begin
|
|
cg.a_param_const(exprasmlist,OS_ADDR,0,2);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,1);
|
|
end;
|
|
|
|
if not(is_con_or_destructor and
|
|
is_class(methodpointer.resulttype.def) and
|
|
(procdefinition.proctypeoption in [potype_constructor,potype_destructor])
|
|
) then
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,1);
|
|
{ if an inherited con- or destructor should be }
|
|
{ called in a con- or destructor then a warning }
|
|
{ will be made }
|
|
{ con- and destructors need a pointer to the vmt }
|
|
if is_con_or_destructor and
|
|
is_object(methodpointer.resulttype.def) and
|
|
assigned(aktprocdef) then
|
|
begin
|
|
if not(aktprocdef.proctypeoption in
|
|
[potype_constructor,potype_destructor]) then
|
|
CGMessage(cg_w_member_cd_call_from_method);
|
|
end;
|
|
{ class destructors get there flag above }
|
|
{ constructor flags ? }
|
|
if is_con_or_destructor and
|
|
not(
|
|
is_class(methodpointer.resulttype.def) and
|
|
assigned(aktprocdef) and
|
|
(aktprocdef.proctypeoption=potype_destructor)) then
|
|
begin
|
|
{ a constructor needs also a flag }
|
|
if is_class(methodpointer.resulttype.def) then
|
|
cg.a_param_const(exprasmlist,OS_ADDR,0,2);
|
|
cg.a_param_const(exprasmlist,OS_ADDR,0,1);
|
|
end;
|
|
end;
|
|
hnewn:
|
|
begin
|
|
{ extended syntax of new }
|
|
{ ESI must be zero }
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
cg.a_load_const_reg(exprasmlist,OS_ADDR,0,self_pointer_reg);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,2);
|
|
{ insert the vmt }
|
|
reference_reset_symbol(href,objectlibrary.newasmsymbol(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
|
|
cg.a_paramaddr_ref(exprasmlist,href,1);
|
|
extended_new:=true;
|
|
end;
|
|
hdisposen:
|
|
begin
|
|
secondpass(methodpointer);
|
|
|
|
{ destructor with extended syntax called from dispose }
|
|
{ hdisposen always deliver LOC_REFERENCE }
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
emit_ref_reg(A_LEA,S_L,methodpointer.location.reference,R_ESI);
|
|
reference_release(exprasmlist,methodpointer.location.reference);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,2);
|
|
reference_reset_symbol(href,objectlibrary.newasmsymbol(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
|
|
cg.a_paramaddr_ref(exprasmlist,href,1);
|
|
end;
|
|
else
|
|
begin
|
|
{ call to an instance member }
|
|
if (symtableproc.symtabletype<>withsymtable) then
|
|
begin
|
|
secondpass(methodpointer);
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
case methodpointer.location.loc of
|
|
LOC_CREGISTER,
|
|
LOC_REGISTER:
|
|
begin
|
|
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,methodpointer.location.register,R_ESI);
|
|
rg.ungetregisterint(exprasmlist,methodpointer.location.register);
|
|
end;
|
|
else
|
|
begin
|
|
if (methodpointer.resulttype.def.deftype=classrefdef) or
|
|
is_class_or_interface(methodpointer.resulttype.def) then
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,methodpointer.location.reference,R_ESI)
|
|
else
|
|
cg.a_loadaddr_ref_reg(exprasmlist,methodpointer.location.reference,R_ESI);
|
|
reference_release(exprasmlist,methodpointer.location.reference);
|
|
end;
|
|
end;
|
|
end;
|
|
{ when calling a class method, we have to load ESI with the VMT !
|
|
But, not for a class method via self }
|
|
if not(po_containsself in procdefinition.procoptions) then
|
|
begin
|
|
if (po_classmethod in procdefinition.procoptions) and
|
|
not(methodpointer.resulttype.def.deftype=classrefdef) then
|
|
begin
|
|
{ class method needs current VMT }
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
reference_reset_base(href,R_ESI,tprocdef(procdefinition)._class.vmt_offset);
|
|
cg.a_maybe_testself(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,self_pointer_reg);
|
|
end;
|
|
|
|
{ direct call to destructor: remove data }
|
|
if (procdefinition.proctypeoption=potype_destructor) and
|
|
is_class(methodpointer.resulttype.def) then
|
|
cg.a_param_const(exprasmlist,OS_INT,1,1);
|
|
|
|
{ direct call to class constructor, don't allocate memory }
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
is_class(methodpointer.resulttype.def) then
|
|
begin
|
|
cg.a_param_const(exprasmlist,OS_INT,0,2);
|
|
cg.a_param_const(exprasmlist,OS_INT,0,1);
|
|
end
|
|
else
|
|
begin
|
|
{ constructor call via classreference => allocate memory }
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
(methodpointer.resulttype.def.deftype=classrefdef) and
|
|
is_class(tclassrefdef(methodpointer.resulttype.def).pointertype.def) then
|
|
cg.a_param_const(exprasmlist,OS_INT,1,1);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,1);
|
|
end;
|
|
end;
|
|
|
|
if is_con_or_destructor then
|
|
begin
|
|
{ classes don't get a VMT pointer pushed }
|
|
if is_object(methodpointer.resulttype.def) then
|
|
begin
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ it's no bad idea, to insert the VMT }
|
|
reference_reset_symbol(href,objectlibrary.newasmsymbol(
|
|
tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
|
|
cg.a_paramaddr_ref(exprasmlist,href,1);
|
|
end
|
|
{ destructors haven't to dispose the instance, if this is }
|
|
{ a direct call }
|
|
else
|
|
cg.a_param_const(exprasmlist,OS_INT,0,1);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if (po_classmethod in procdefinition.procoptions) and
|
|
not(
|
|
assigned(aktprocdef) and
|
|
(po_classmethod in aktprocdef.procoptions)
|
|
) then
|
|
begin
|
|
{ class method needs current VMT }
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
reference_reset_base(href,R_ESI,tprocdef(procdefinition)._class.vmt_offset);
|
|
cg.a_maybe_testself(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,R_ESI);
|
|
end
|
|
else
|
|
begin
|
|
{ member call, ESI isn't modified }
|
|
loadesi:=false;
|
|
end;
|
|
{ direct call to destructor: don't remove data! }
|
|
if is_class(procinfo._class) then
|
|
begin
|
|
if (procdefinition.proctypeoption=potype_destructor) then
|
|
begin
|
|
cg.a_param_const(exprasmlist,OS_INT,0,2);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,R_ESI,1);
|
|
end
|
|
else if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
cg.a_param_const(exprasmlist,OS_INT,0,2);
|
|
cg.a_param_const(exprasmlist,OS_INT,0,1);
|
|
end
|
|
else
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,R_ESI,1);
|
|
end
|
|
else if is_object(procinfo._class) then
|
|
begin
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,R_ESI,1);
|
|
if is_con_or_destructor then
|
|
begin
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ it's no bad idea, to insert the VMT }
|
|
reference_reset_symbol(href,objectlibrary.newasmsymbol(procinfo._class.vmt_mangledname),0);
|
|
cg.a_paramaddr_ref(exprasmlist,href,1);
|
|
end
|
|
{ destructors haven't to dispose the instance, if this is }
|
|
{ a direct call }
|
|
else
|
|
cg.a_param_const(exprasmlist,OS_INT,0,1);
|
|
end;
|
|
end
|
|
else
|
|
Internalerror(200006165);
|
|
end;
|
|
end;
|
|
{$endif dummy}
|
|
|
|
{ call to BeforeDestruction? }
|
|
if (procdefinition.proctypeoption=potype_destructor) and
|
|
assigned(methodpointer) and
|
|
(methodpointer.nodetype<>typen) and
|
|
is_class(tobjectdef(methodpointer.resulttype.def)) and
|
|
(inlined or
|
|
(right=nil)) then
|
|
begin
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,paramanager.getintparaloc(1));
|
|
reference_reset_base(href,self_pointer_reg,0);
|
|
tmpreg:=cg.get_scratch_reg_address(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,tmpreg);
|
|
reference_reset_base(href,tmpreg,72);
|
|
cg.a_call_ref(exprasmlist,href);
|
|
cg.free_scratch_reg(exprasmlist,tmpreg);
|
|
end;
|
|
|
|
{ push base pointer ?}
|
|
{ never when inlining, since if necessary, the base pointer }
|
|
{ can/will be gottten from the current procedure's symtable }
|
|
{ (JM) }
|
|
if not inlined then
|
|
if (lexlevel>=normal_function_level) and assigned(tprocdef(procdefinition).parast) and
|
|
((tprocdef(procdefinition).parast.symtablelevel)>normal_function_level) then
|
|
load_framepointer;
|
|
|
|
rg.saveregvars(exprasmlist,regs_to_push);
|
|
|
|
{$ifdef dummy}
|
|
if (po_virtualmethod in procdefinition.procoptions) and
|
|
not(no_virtual_call) then
|
|
begin
|
|
{ static functions contain the vmt_address in ESI }
|
|
{ also class methods }
|
|
{ Here it is quite tricky because it also depends }
|
|
{ on the methodpointer PM }
|
|
release_tmpreg:=false;
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
if assigned(aktprocdef) then
|
|
begin
|
|
if (((sp_static in aktprocdef.procsym.symoptions) or
|
|
(po_classmethod in aktprocdef.procoptions)) and
|
|
((methodpointer=nil) or (methodpointer.nodetype=typen)))
|
|
or
|
|
(po_staticmethod in procdefinition.procoptions) or
|
|
((procdefinition.proctypeoption=potype_constructor) and
|
|
{ esi contains the vmt if we call a constructor via a class ref }
|
|
assigned(methodpointer) and
|
|
(methodpointer.resulttype.def.deftype=classrefdef)
|
|
) or
|
|
{ is_interface(tprocdef(procdefinition)._class) or }
|
|
{ ESI is loaded earlier }
|
|
(po_classmethod in procdefinition.procoptions) then
|
|
begin
|
|
reference_reset_base(href,R_ESI,0);
|
|
end
|
|
else
|
|
begin
|
|
{ this is one point where we need vmt_offset (PM) }
|
|
reference_reset_base(href,R_ESI,tprocdef(procdefinition)._class.vmt_offset);
|
|
cg.a_maybe_testself(exprasmlist);
|
|
tmpreg:=cg.get_scratch_reg_address(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,tmpreg);
|
|
reference_reset_base(href,tmpreg,0);
|
|
release_tmpreg:=true;
|
|
end;
|
|
end
|
|
else
|
|
{ aktprocdef should be assigned, also in main program }
|
|
internalerror(12345);
|
|
|
|
if tprocdef(procdefinition).extnumber=-1 then
|
|
internalerror(44584);
|
|
|
|
href.offset:=tprocdef(procdefinition)._class.vmtmethodoffset(tprocdef(procdefinition).extnumber);
|
|
if not(is_interface(tprocdef(procdefinition)._class)) and
|
|
not(is_cppclass(tprocdef(procdefinition)._class)) then
|
|
begin
|
|
if (cs_check_object in aktlocalswitches) then
|
|
begin
|
|
reference_reset_symbol(hrefvmt,objectlibrary.newasmsymbol(tprocdef(procdefinition)._class.vmt_mangledname),0);
|
|
cg.a_paramaddr_ref(exprasmlist,hrefvmt,2);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,href.base,1);
|
|
cg.a_call_name(exprasmlist,'FPC_CHECK_OBJECT_EXT');
|
|
end
|
|
else if (cs_check_range in aktlocalswitches) then
|
|
begin
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,href.base,1);
|
|
cg.a_call_name(exprasmlist,'FPC_CHECK_OBJECT');
|
|
end;
|
|
end;
|
|
cg.a_call_ref(exprasmlist,href);
|
|
if release_tmpreg then
|
|
cg.free_scratch_reg(exprasmlist,tmpreg);
|
|
end
|
|
else
|
|
{$endif dummy}
|
|
if not inlined then
|
|
begin
|
|
{ We can call interrupts from within the smae code
|
|
by just pushing the flags and CS PM }
|
|
if (po_interrupt in procdefinition.procoptions) then
|
|
extra_interrupt_code;
|
|
cg.a_call_name(exprasmlist,tprocdef(procdefinition).mangledname);
|
|
end
|
|
else { inlined proc }
|
|
{ inlined code is in inlinecode }
|
|
begin
|
|
{ process the inlinecode }
|
|
secondpass(tnode(inlinecode));
|
|
{ free the args }
|
|
if tprocdef(procdefinition).parast.datasize>0 then
|
|
tg.UnGetTemp(exprasmlist,pararef);
|
|
end;
|
|
end
|
|
else
|
|
{ now procedure variable case }
|
|
begin
|
|
secondpass(right);
|
|
if (po_interrupt in procdefinition.procoptions) then
|
|
extra_interrupt_code;
|
|
{ procedure of object? }
|
|
if (po_methodpointer in procdefinition.procoptions) then
|
|
begin
|
|
{$ifdef dummy}
|
|
{ method pointer can't be in a register }
|
|
hregister:=R_NO;
|
|
|
|
{ do some hacking if we call a method pointer }
|
|
{ which is a class member }
|
|
{ else ESI is overwritten ! }
|
|
if (right.location.reference.base=R_ESI) or
|
|
(right.location.reference.index=R_ESI) then
|
|
begin
|
|
reference_release(exprasmlist,right.location.reference);
|
|
hregister:=cg.get_scratch_reg_address(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,right.location.reference,hregister);
|
|
end;
|
|
|
|
{ load self, but not if it's already explicitly pushed }
|
|
if not(po_containsself in procdefinition.procoptions) then
|
|
begin
|
|
{ load ESI }
|
|
href:=right.location.reference;
|
|
inc(href.offset,4);
|
|
rg.getexplicitregisterint(exprasmlist,R_ESI);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,self_pointer_reg);
|
|
{ push self pointer }
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,self_pointer_reg,-1);
|
|
end;
|
|
|
|
rg.saveregvars(exprasmlist,ALL_REGISTERS);
|
|
if hregister<>R_NO then
|
|
cg.a_call_reg(exprasmlist,hregister)
|
|
else
|
|
cg.a_call_ref(exprasmlist,right.location.reference);
|
|
|
|
if hregister<>R_NO then
|
|
cg.free_scratch_reg(exprasmlist,hregister);
|
|
reference_release(exprasmlist,right.location.reference);
|
|
tg.Ungetiftemp(exprasmlist,right.location.reference);
|
|
{$endif dummy}
|
|
end
|
|
else
|
|
begin
|
|
rg.saveregvars(exprasmlist,ALL_REGISTERS);
|
|
cg.a_call_loc(exprasmlist,right.location);
|
|
location_release(exprasmlist,right.location);
|
|
location_freetemp(exprasmlist,right.location);
|
|
end;
|
|
end;
|
|
|
|
{$ifdef dummy}
|
|
{ this was only for normal functions
|
|
displaced here so we also get
|
|
it to work for procvars PM }
|
|
if (not inlined) and (po_clearstack in procdefinition.procoptions) then
|
|
begin
|
|
{ we also add the pop_size which is included in pushedparasize }
|
|
pop_size:=0;
|
|
{ better than an add on all processors }
|
|
if pushedparasize=4 then
|
|
begin
|
|
rg.getexplicitregisterint(exprasmlist,R_EDI);
|
|
emit_reg(A_POP,S_L,R_EDI);
|
|
rg.ungetregisterint(exprasmlist,R_EDI);
|
|
end
|
|
{ the pentium has two pipes and pop reg is pairable }
|
|
{ but the registers must be different! }
|
|
else if (pushedparasize=8) and
|
|
not(cs_littlesize in aktglobalswitches) and
|
|
{$ifdef i386}
|
|
(aktoptprocessor=ClassP5) and
|
|
{$endif}
|
|
(procinfo._class=nil) then
|
|
begin
|
|
rg.getexplicitregisterint(exprasmlist,R_EDI);
|
|
emit_reg(A_POP,S_L,R_EDI);
|
|
rg.ungetregisterint(exprasmlist,R_EDI);
|
|
exprasmList.concat(tai_regalloc.Alloc(R_ESI));
|
|
emit_reg(A_POP,S_L,R_ESI);
|
|
exprasmList.concat(tai_regalloc.DeAlloc(R_ESI));
|
|
end
|
|
else if pushedparasize<>0 then
|
|
emit_const_reg(A_ADD,S_L,pushedparasize,R_ESP);
|
|
end;
|
|
{$endif dummy}
|
|
|
|
{$ifdef powerpc}
|
|
{ this calculation must be done in pass_1 anyway, so don't worry }
|
|
if tppcprocinfo(procinfo).maxpushedparasize<pushedparasize then
|
|
tppcprocinfo(procinfo).maxpushedparasize:=pushedparasize;
|
|
{$endif powerpc}
|
|
{$ifdef OPTALIGN}
|
|
if pop_esp then
|
|
emit_reg(A_POP,S_L,R_ESP);
|
|
{$endif OPTALIGN}
|
|
dont_call:
|
|
pushedparasize:=oldpushedparasize;
|
|
rg.restoreunusedstate(unusedstate);
|
|
{$ifdef TEMPREGDEBUG}
|
|
testregisters32;
|
|
{$endif TEMPREGDEBUG}
|
|
|
|
{ a constructor could be a function with boolean result }
|
|
{ if calling constructor called fail we
|
|
must jump directly to quickexitlabel PM
|
|
but only if it is a call of an inherited constructor }
|
|
if (inlined or
|
|
(right=nil)) and
|
|
(procdefinition.proctypeoption=potype_constructor) and
|
|
assigned(methodpointer) and
|
|
(methodpointer.nodetype=typen) and
|
|
(aktprocdef.proctypeoption=potype_constructor) then
|
|
begin
|
|
cg.a_cmp_const_reg_label(exprasmlist,OS_ADDR,OC_EQ,0,accumulator,faillabel);
|
|
end;
|
|
|
|
{ call to AfterConstruction? }
|
|
if is_class(resulttype.def) and
|
|
(inlined or
|
|
(right=nil)) and
|
|
(procdefinition.proctypeoption=potype_constructor) and
|
|
assigned(methodpointer) and
|
|
(methodpointer.nodetype<>typen) then
|
|
begin
|
|
objectlibrary.getlabel(constructorfailed);
|
|
cg.a_cmp_const_reg_label(exprasmlist,OS_ADDR,OC_EQ,0,self_pointer_reg,constructorfailed);
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,accumulator,paramanager.getintparaloc(1));
|
|
reference_reset_base(href,self_pointer_reg,0);
|
|
tmpreg:=cg.get_scratch_reg_address(exprasmlist);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,tmpreg);
|
|
reference_reset_base(href,tmpreg,17*pointer_size);
|
|
cg.a_call_ref(exprasmlist,href);
|
|
cg.free_scratch_reg(exprasmlist,tmpreg);
|
|
exprasmList.concat(tai_regalloc.Alloc(accumulator));
|
|
cg.a_label(exprasmlist,constructorfailed);
|
|
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,self_pointer_reg,accumulator);
|
|
end;
|
|
|
|
{ handle function results }
|
|
if (not is_void(resulttype.def)) then
|
|
handle_return_value(inlined,extended_new);
|
|
|
|
{ perhaps i/o check ? }
|
|
if iolabel<>nil then
|
|
begin
|
|
reference_reset_symbol(href,iolabel,0);
|
|
cg.a_paramaddr_ref(exprasmlist,href,paramanager.getintparaloc(1));
|
|
cg.a_call_name(exprasmlist,'FPC_IOCHECK');
|
|
end;
|
|
|
|
{$ifdef i386}
|
|
if pop_size>0 then
|
|
emit_const_reg(A_ADD,S_L,pop_size,R_ESP);
|
|
{$endif i386}
|
|
|
|
{ restore registers }
|
|
rg.restoreusedregisters(exprasmlist,pushed);
|
|
|
|
{ at last, restore instance pointer (SELF) }
|
|
if loadesi then
|
|
cg.g_maybe_loadself(exprasmlist);
|
|
pp:=tbinarynode(params);
|
|
while assigned(pp) do
|
|
begin
|
|
if assigned(pp.left) then
|
|
begin
|
|
location_freetemp(exprasmlist,pp.left.location);
|
|
{ process also all nodes of an array of const }
|
|
if pp.left.nodetype=arrayconstructorn then
|
|
begin
|
|
if assigned(tarrayconstructornode(pp.left).left) then
|
|
begin
|
|
hp:=pp.left;
|
|
while assigned(hp) do
|
|
begin
|
|
location_freetemp(exprasmlist,tarrayconstructornode(hp).left.location);
|
|
hp:=tarrayconstructornode(hp).right;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
pp:=tbinarynode(pp.right);
|
|
end;
|
|
if inlined then
|
|
begin
|
|
if (resulttype.def.size>0) then
|
|
tg.UnGetTemp(exprasmlist,returnref);
|
|
tprocdef(procdefinition).parast.address_fixup:=store_parast_fixup;
|
|
right:=inlinecode;
|
|
end;
|
|
if assigned(params) then
|
|
params.free;
|
|
|
|
{ from now on the result can be freed normally }
|
|
if inlined and paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
|
|
tg.ChangeTempType(exprasmlist,funcretref,tt_normal);
|
|
|
|
{ if return value is not used }
|
|
if (not(nf_return_value_used in flags)) and (not is_void(resulttype.def)) then
|
|
begin
|
|
if location.loc in [LOC_CREFERENCE,LOC_REFERENCE] then
|
|
begin
|
|
{ data which must be finalized ? }
|
|
if (resulttype.def.needs_inittable) then
|
|
cg.g_finalize(exprasmlist,resulttype.def,location.reference,false);
|
|
{ release unused temp }
|
|
tg.ungetiftemp(exprasmlist,location.reference)
|
|
end
|
|
else if location.loc=LOC_FPUREGISTER then
|
|
begin
|
|
{$ifdef i386}
|
|
{ release FPU stack }
|
|
emit_reg(A_FSTP,S_NO,R_ST);
|
|
{
|
|
dec(trgcpu(rg).fpuvaroffset);
|
|
do NOT decrement as the increment before
|
|
is not called for unused results PM }
|
|
{$endif i386}
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGPROCINLINENODE
|
|
*****************************************************************************}
|
|
|
|
|
|
procedure tcgprocinlinenode.pass_2;
|
|
var st : tsymtable;
|
|
oldprocdef : tprocdef;
|
|
ps, i : longint;
|
|
tmpreg: tregister;
|
|
oldprocinfo : tprocinfo;
|
|
oldinlining_procedure,
|
|
nostackframe,make_global : boolean;
|
|
inlineentrycode,inlineexitcode : TAAsmoutput;
|
|
oldexitlabel,oldexit2label,oldquickexitlabel:tasmlabel;
|
|
oldregstate: pointer;
|
|
localsref : treference;
|
|
{$ifdef GDB}
|
|
startlabel,endlabel : tasmlabel;
|
|
pp : pchar;
|
|
mangled_length : longint;
|
|
{$endif GDB}
|
|
begin
|
|
{ deallocate the registers used for the current procedure's regvars }
|
|
if assigned(aktprocdef.regvarinfo) then
|
|
begin
|
|
with pregvarinfo(aktprocdef.regvarinfo)^ do
|
|
for i := 1 to maxvarregs do
|
|
if assigned(regvars[i]) then
|
|
store_regvar(exprasmlist,regvars[i].reg);
|
|
rg.saveStateForInline(oldregstate);
|
|
{ make sure the register allocator knows what the regvars in the }
|
|
{ inlined code block are (JM) }
|
|
rg.resetusableregisters;
|
|
rg.clearregistercount;
|
|
rg.cleartempgen;
|
|
if assigned(inlineprocdef.regvarinfo) then
|
|
with pregvarinfo(inlineprocdef.regvarinfo)^ do
|
|
for i := 1 to maxvarregs do
|
|
if assigned(regvars[i]) then
|
|
begin
|
|
tmpreg:=rg.makeregsize(regvars[i].reg,OS_INT);
|
|
rg.makeregvar(tmpreg);
|
|
end;
|
|
end;
|
|
oldinlining_procedure:=inlining_procedure;
|
|
oldexitlabel:=aktexitlabel;
|
|
oldexit2label:=aktexit2label;
|
|
oldquickexitlabel:=quickexitlabel;
|
|
oldprocdef:=aktprocdef;
|
|
oldprocinfo:=procinfo;
|
|
objectlibrary.getlabel(aktexitlabel);
|
|
objectlibrary.getlabel(aktexit2label);
|
|
{ we're inlining a procedure }
|
|
inlining_procedure:=true;
|
|
aktprocdef:=inlineprocdef;
|
|
|
|
{ clone procinfo, but not the asmlists }
|
|
procinfo:=tprocinfo(cprocinfo.newinstance);
|
|
move(pointer(oldprocinfo)^,pointer(procinfo)^,cprocinfo.InstanceSize);
|
|
procinfo.aktentrycode:=nil;
|
|
procinfo.aktexitcode:=nil;
|
|
procinfo.aktproccode:=nil;
|
|
procinfo.aktlocaldata:=nil;
|
|
|
|
{ set new procinfo }
|
|
procinfo.return_offset:=retoffset;
|
|
procinfo.para_offset:=para_offset;
|
|
procinfo.no_fast_exit:=false;
|
|
|
|
{ arg space has been filled by the parent secondcall }
|
|
st:=aktprocdef.localst;
|
|
{ set it to the same lexical level }
|
|
st.symtablelevel:=oldprocdef.localst.symtablelevel;
|
|
if st.datasize>0 then
|
|
begin
|
|
tg.GetTemp(exprasmlist,st.datasize,tt_persistant,localsref);
|
|
st.address_fixup:=localsref.offset+st.datasize;
|
|
{$ifdef extdebug}
|
|
Comment(V_debug,'local symtable is at offset '+tostr(st.address_fixup));
|
|
exprasmList.concat(tai_comment.Create(strpnew(
|
|
'local symtable is at offset '+tostr(st.address_fixup))));
|
|
{$endif extdebug}
|
|
end;
|
|
exprasmList.concat(Tai_Marker.Create(InlineStart));
|
|
{$ifdef extdebug}
|
|
exprasmList.concat(tai_comment.Create(strpnew('Start of inlined proc')));
|
|
{$endif extdebug}
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
objectlibrary.getaddrlabel(startlabel);
|
|
objectlibrary.getaddrlabel(endlabel);
|
|
cg.a_label(exprasmlist,startlabel);
|
|
inlineprocdef.localst.symtabletype:=inlinelocalsymtable;
|
|
inlineprocdef.parast.symtabletype:=inlineparasymtable;
|
|
|
|
{ Here we must include the para and local symtable info }
|
|
inlineprocdef.concatstabto(withdebuglist);
|
|
|
|
{ set it back for safety }
|
|
inlineprocdef.localst.symtabletype:=localsymtable;
|
|
inlineprocdef.parast.symtabletype:=parasymtable;
|
|
|
|
mangled_length:=length(oldprocdef.mangledname);
|
|
getmem(pp,mangled_length+50);
|
|
strpcopy(pp,'192,0,0,'+startlabel.name);
|
|
if (target_info.use_function_relative_addresses) then
|
|
begin
|
|
strpcopy(strend(pp),'-');
|
|
strpcopy(strend(pp),oldprocdef.mangledname);
|
|
end;
|
|
withdebugList.concat(Tai_stabn.Create(strnew(pp)));
|
|
end;
|
|
{$endif GDB}
|
|
{ takes care of local data initialization }
|
|
inlineentrycode:=TAAsmoutput.Create;
|
|
inlineexitcode:=TAAsmoutput.Create;
|
|
ps:=para_size;
|
|
make_global:=false; { to avoid warning }
|
|
genentrycode(inlineentrycode,make_global,0,ps,nostackframe,true);
|
|
if po_assembler in aktprocdef.procoptions then
|
|
inlineentrycode.insert(Tai_marker.Create(asmblockstart));
|
|
exprasmList.concatlist(inlineentrycode);
|
|
secondpass(inlinetree);
|
|
genexitcode(inlineexitcode,0,false,true);
|
|
if po_assembler in aktprocdef.procoptions then
|
|
inlineexitcode.concat(Tai_marker.Create(asmblockend));
|
|
exprasmList.concatlist(inlineexitcode);
|
|
|
|
inlineentrycode.free;
|
|
inlineexitcode.free;
|
|
{$ifdef extdebug}
|
|
exprasmList.concat(tai_comment.Create(strpnew('End of inlined proc')));
|
|
{$endif extdebug}
|
|
exprasmList.concat(Tai_Marker.Create(InlineEnd));
|
|
|
|
{we can free the local data now, reset also the fixup address }
|
|
if st.datasize>0 then
|
|
begin
|
|
tg.UnGetTemp(exprasmlist,localsref);
|
|
st.address_fixup:=0;
|
|
end;
|
|
{ restore procinfo }
|
|
procinfo.free;
|
|
procinfo:=oldprocinfo;
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
cg.a_label(exprasmlist,endlabel);
|
|
strpcopy(pp,'224,0,0,'+endlabel.name);
|
|
if (target_info.use_function_relative_addresses) then
|
|
begin
|
|
strpcopy(strend(pp),'-');
|
|
strpcopy(strend(pp),oldprocdef.mangledname);
|
|
end;
|
|
withdebugList.concat(Tai_stabn.Create(strnew(pp)));
|
|
freemem(pp,mangled_length+50);
|
|
end;
|
|
{$endif GDB}
|
|
{ restore }
|
|
aktprocdef:=oldprocdef;
|
|
aktexitlabel:=oldexitlabel;
|
|
aktexit2label:=oldexit2label;
|
|
quickexitlabel:=oldquickexitlabel;
|
|
inlining_procedure:=oldinlining_procedure;
|
|
|
|
{ reallocate the registers used for the current procedure's regvars, }
|
|
{ since they may have been used and then deallocated in the inlined }
|
|
{ procedure (JM) }
|
|
if assigned(aktprocdef.regvarinfo) then
|
|
begin
|
|
rg.restoreStateAfterInline(oldregstate);
|
|
end;
|
|
end;
|
|
|
|
|
|
begin
|
|
ccallparanode:=tcgcallparanode;
|
|
ccallnode:=tcgcallnode;
|
|
cprocinlinenode:=tcgprocinlinenode;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.32 2002-12-15 22:50:00 florian
|
|
+ some stuff for the new hidden parameter handling added
|
|
|
|
Revision 1.31 2002/12/15 21:30:12 florian
|
|
* tcallnode.paraitem introduced, all references to defcoll removed
|
|
|
|
Revision 1.30 2002/11/27 20:04:39 peter
|
|
* cdecl array of const fixes
|
|
|
|
Revision 1.29 2002/11/25 17:43:17 peter
|
|
* splitted defbase in defutil,symutil,defcmp
|
|
* merged isconvertable and is_equal into compare_defs(_ext)
|
|
* made operator search faster by walking the list only once
|
|
|
|
Revision 1.28 2002/11/18 17:31:54 peter
|
|
* pass proccalloption to ret_in_xxx and push_xxx functions
|
|
|
|
Revision 1.27 2002/11/16 15:34:30 florian
|
|
* generic location for float results
|
|
|
|
Revision 1.26 2002/11/15 01:58:51 peter
|
|
* merged changes from 1.0.7 up to 04-11
|
|
- -V option for generating bug report tracing
|
|
- more tracing for option parsing
|
|
- errors for cdecl and high()
|
|
- win32 import stabs
|
|
- win32 records<=8 are returned in eax:edx (turned off by default)
|
|
- heaptrc update
|
|
- more info for temp management in .s file with EXTDEBUG
|
|
|
|
Revision 1.25 2002/10/05 12:43:25 carl
|
|
* fixes for Delphi 6 compilation
|
|
(warning : Some features do not work under Delphi)
|
|
|
|
Revision 1.24 2002/09/30 07:00:45 florian
|
|
* fixes to common code to get the alpha compiler compiled applied
|
|
|
|
Revision 1.23 2002/09/17 18:54:02 jonas
|
|
* a_load_reg_reg() now has two size parameters: source and dest. This
|
|
allows some optimizations on architectures that don't encode the
|
|
register size in the register name.
|
|
|
|
Revision 1.22 2002/09/07 15:25:02 peter
|
|
* old logs removed and tabs fixed
|
|
|
|
Revision 1.21 2002/09/07 11:50:02 jonas
|
|
* fixed small regalloction info bug
|
|
|
|
Revision 1.20 2002/09/02 11:25:20 florian
|
|
* fixed generic procedure variable calling
|
|
|
|
Revision 1.19 2002/09/01 21:04:48 florian
|
|
* several powerpc related stuff fixed
|
|
|
|
Revision 1.18 2002/09/01 18:43:27 peter
|
|
* include accumulator in regs_to_push list
|
|
|
|
Revision 1.17 2002/09/01 12:13:00 peter
|
|
* use a_call_reg
|
|
* ungetiftemp for procvar of object temp
|
|
|
|
Revision 1.16 2002/08/25 19:25:18 peter
|
|
* sym.insert_in_data removed
|
|
* symtable.insertvardata/insertconstdata added
|
|
* removed insert_in_data call from symtable.insert, it needs to be
|
|
called separatly. This allows to deref the address calculation
|
|
* procedures now calculate the parast addresses after the procedure
|
|
directives are parsed. This fixes the cdecl parast problem
|
|
* push_addr_param has an extra argument that specifies if cdecl is used
|
|
or not
|
|
|
|
Revision 1.15 2002/08/23 16:14:48 peter
|
|
* tempgen cleanup
|
|
* tt_noreuse temp type added that will be used in genentrycode
|
|
|
|
Revision 1.14 2002/08/20 16:55:38 peter
|
|
* don't write (stabs)line info when inlining a procedure
|
|
|
|
Revision 1.13 2002/08/19 19:36:42 peter
|
|
* More fixes for cross unit inlining, all tnodes are now implemented
|
|
* Moved pocall_internconst to po_internconst because it is not a
|
|
calling type at all and it conflicted when inlining of these small
|
|
functions was requested
|
|
|
|
Revision 1.12 2002/08/18 20:06:23 peter
|
|
* inlining is now also allowed in interface
|
|
* renamed write/load to ppuwrite/ppuload
|
|
* tnode storing in ppu
|
|
* nld,ncon,nbas are already updated for storing in ppu
|
|
|
|
Revision 1.11 2002/08/17 22:09:44 florian
|
|
* result type handling in tcgcal.pass_2 overhauled
|
|
* better tnode.dowrite
|
|
* some ppc stuff fixed
|
|
|
|
Revision 1.10 2002/08/17 09:23:35 florian
|
|
* first part of procinfo rewrite
|
|
|
|
Revision 1.9 2002/08/13 21:40:55 florian
|
|
* more fixes for ppc calling conventions
|
|
|
|
Revision 1.8 2002/08/13 18:01:51 carl
|
|
* rename swatoperands to swapoperands
|
|
+ m68k first compilable version (still needs a lot of testing):
|
|
assembler generator, system information , inline
|
|
assembler reader.
|
|
|
|
Revision 1.7 2002/08/12 15:08:39 carl
|
|
+ stab register indexes for powerpc (moved from gdb to cpubase)
|
|
+ tprocessor enumeration moved to cpuinfo
|
|
+ linker in target_info is now a class
|
|
* many many updates for m68k (will soon start to compile)
|
|
- removed some ifdef or correct them for correct cpu
|
|
|
|
Revision 1.6 2002/08/11 14:32:26 peter
|
|
* renamed current_library to objectlibrary
|
|
|
|
Revision 1.5 2002/08/11 13:24:11 peter
|
|
* saving of asmsymbols in ppu supported
|
|
* asmsymbollist global is removed and moved into a new class
|
|
tasmlibrarydata that will hold the info of a .a file which
|
|
corresponds with a single module. Added librarydata to tmodule
|
|
to keep the library info stored for the module. In the future the
|
|
objectfiles will also be stored to the tasmlibrarydata class
|
|
* all getlabel/newasmsymbol and friends are moved to the new class
|
|
|
|
Revision 1.4 2002/08/06 20:55:20 florian
|
|
* first part of ppc calling conventions fix
|
|
|
|
Revision 1.3 2002/07/20 11:57:53 florian
|
|
* types.pas renamed to defbase.pas because D6 contains a types
|
|
unit so this would conflicts if D6 programms are compiled
|
|
+ Willamette/SSE2 instructions to assembler added
|
|
|
|
Revision 1.2 2002/07/13 19:38:43 florian
|
|
* some more generic calling stuff fixed
|
|
|
|
}
|