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https://gitlab.com/freepascal.org/fpc/source.git
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1605 lines
66 KiB
ObjectPascal
1605 lines
66 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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private
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function push_self_and_vmt(needvmtreg:boolean):tregister;
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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:boolean);
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{# This routine is used to push the current frame pointer
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on the stack. This is used in nested routines where the
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value of the frame pointer is always pushed as an extra
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parameter.
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The default handling is the standard handling used on
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most stack based machines, where the frame pointer is
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the first invisible parameter.
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}
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function align_parasize(parasize,para_alignment:longint):longint;virtual;
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procedure pop_parasize(pop_size:longint);virtual;
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procedure push_framepointer;virtual;
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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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nbas,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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var
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otlabel,oflabel : tasmlabel;
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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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{ set default para_alignment to target_info.stackalignment }
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if para_alignment=0 then
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para_alignment:=aktalignment.paraalign;
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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,POINTER_SIZE);
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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(exprasmlist,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,POINTER_SIZE);
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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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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,POINTER_SIZE);
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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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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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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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inc(pushedparasize,POINTER_SIZE);
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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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else
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begin
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push_value_para(exprasmlist,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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end;
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function tcgcallnode.align_parasize(parasize,para_alignment:longint):longint;
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begin
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result:=0;
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end;
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procedure tcgcallnode.pop_parasize(pop_size:longint);
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begin
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end;
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function tcgcallnode.push_self_and_vmt(needvmtreg:boolean):tregister;
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var
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href : treference;
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vmtloc,selfloc : tlocation;
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self_is_vmt,
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vmtrefaddr,
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selfrefaddr : boolean;
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procedure selfloc_to_register;
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var
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hregister : tregister;
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begin
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case selfloc.loc of
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LOC_REGISTER :
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hregister:=selfloc.register;
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LOC_CREFERENCE,
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LOC_REFERENCE :
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begin
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hregister:=rg.getaddressregister(exprasmlist);
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if selfrefaddr then
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begin
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cg.a_loadaddr_ref_reg(exprasmlist,selfloc.reference,hregister);
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selfrefaddr:=false;
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end
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else
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,selfloc.reference,hregister);
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reference_release(exprasmlist,selfloc.reference);
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end;
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else
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internalerror(200303269);
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end;
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location_reset(selfloc,LOC_REGISTER,OS_ADDR);
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selfloc.register:=hregister;
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end;
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begin
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result.enum:=R_INTREGISTER;
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result.number:=NR_NO;
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location_reset(vmtloc,LOC_CONSTANT,OS_ADDR);
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location_reset(selfloc,LOC_CONSTANT,OS_ADDR);
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vmtrefaddr:=false;
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selfrefaddr:=false;
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self_is_vmt:=false;
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{ generate fake methodpointer node for withsymtable }
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if (symtableproc.symtabletype=withsymtable) then
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begin
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methodpointer:=cnothingnode.create;
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methodpointer.resulttype:=twithnode(twithsymtable(symtableproc).withnode).left.resulttype;
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end;
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if assigned(methodpointer) then
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begin
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case methodpointer.nodetype of
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typen:
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begin
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if (sp_static in symtableprocentry.symoptions) then
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begin
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self_is_vmt:=true;
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if (oo_has_vmt in tobjectdef(methodpointer.resulttype.def).objectoptions) then
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begin
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location_reset(vmtloc,LOC_REFERENCE,OS_NO);
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reference_reset_symbol(vmtloc.reference,objectlibrary.newasmsymboldata(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
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vmtrefaddr:=true;
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end;
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end
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else
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begin
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{ member call, load self }
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location_reset(selfloc,LOC_REGISTER,OS_ADDR);
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selfloc.register:=cg.g_load_self(exprasmlist);
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end;
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if (procdefinition.proctypeoption in [potype_constructor,potype_destructor]) then
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begin
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if is_object(methodpointer.resulttype.def) then
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begin
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{ object }
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{ if an inherited con- or destructor should be }
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{ called in a con- or destructor then a warning }
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{ will be made }
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{ con- and destructors need a pointer to the vmt }
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if not(aktprocdef.proctypeoption in
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[potype_constructor,potype_destructor]) then
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CGMessage(cg_w_member_cd_call_from_method);
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{ reset self when calling constructor from destructor }
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if (procdefinition.proctypeoption=potype_constructor) and
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assigned(aktprocdef) and
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(aktprocdef.proctypeoption=potype_destructor) then
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begin
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location_release(exprasmlist,selfloc);
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location_reset(selfloc,LOC_CONSTANT,OS_ADDR);
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end;
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end;
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end;
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end;
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hnewn:
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begin
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{ constructor with extended syntax called from new }
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{ vmt }
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location_reset(vmtloc,LOC_REFERENCE,OS_ADDR);
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reference_reset_symbol(vmtloc.reference,objectlibrary.newasmsymboldata(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
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vmtrefaddr:=true;
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end;
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hdisposen:
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begin
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{ destructor with extended syntax called from dispose }
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{ hdisposen always deliver LOC_REFERENCE }
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secondpass(methodpointer);
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{ vmt }
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location_reset(vmtloc,LOC_REFERENCE,OS_ADDR);
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reference_reset_symbol(vmtloc.reference,objectlibrary.newasmsymboldata(tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
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vmtrefaddr:=true;
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{ self, load in register first when it requires a virtual call }
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location_reset(selfloc,LOC_REFERENCE,OS_ADDR);
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selfloc.reference:=methodpointer.location.reference;
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selfrefaddr:=true;
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end;
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else
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begin
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{ call to an instance member }
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if (symtableproc.symtabletype<>withsymtable) then
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begin
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secondpass(methodpointer);
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case methodpointer.location.loc of
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LOC_CREGISTER,
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LOC_REGISTER:
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begin
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location_reset(selfloc,LOC_REGISTER,OS_ADDR);
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selfloc.register:=methodpointer.location.register;
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end;
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LOC_CREFERENCE,
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LOC_REFERENCE :
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begin
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location_reset(selfloc,LOC_REFERENCE,OS_ADDR);
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selfloc.reference:=methodpointer.location.reference;
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if (methodpointer.resulttype.def.deftype<>classrefdef) and
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not(is_class_or_interface(methodpointer.resulttype.def)) then
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selfrefaddr:=true;
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end;
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else
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internalerror(200303212);
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end;
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end
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else
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begin
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location_reset(selfloc,LOC_REFERENCE,OS_ADDR);
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selfloc.reference:=twithnode(twithsymtable(symtableproc).withnode).withreference;
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if (nf_islocal in twithnode(twithsymtable(symtableproc).withnode).flags) and
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(twithsymtable(symtableproc).direct_with) and
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not(is_class_or_interface(twithnode(twithsymtable(symtableproc).withnode).left.resulttype.def)) then
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selfrefaddr:=true;
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end;
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if (po_staticmethod in procdefinition.procoptions) or
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(po_classmethod in procdefinition.procoptions) then
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begin
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self_is_vmt:=true;
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{ classref are already loaded with VMT }
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if (methodpointer.resulttype.def.deftype=classrefdef) then
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location_copy(vmtloc,selfloc)
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else
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begin
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if (oo_has_vmt in tprocdef(procdefinition)._class.objectoptions) then
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begin
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{ load VMT from passed self }
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selfloc_to_register;
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cg.g_maybe_testself(exprasmlist,selfloc.register);
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location_copy(vmtloc,selfloc);
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reference_reset_base(href,vmtloc.register,tprocdef(procdefinition)._class.vmt_offset);
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,vmtloc.register);
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end;
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end;
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{ reset self }
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location_reset(selfloc,LOC_CONSTANT,OS_ADDR);
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end;
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if (procdefinition.proctypeoption in [potype_constructor,potype_destructor]) then
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begin
|
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{ constructor call via classreference => allocate memory }
|
|
if (methodpointer.resulttype.def.deftype=classrefdef) then
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begin
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
is_class(tclassrefdef(methodpointer.resulttype.def).pointertype.def) then
|
|
begin
|
|
self_is_vmt:=true;
|
|
{ vmt load from provided methodpointer that
|
|
was already loaded in selfloc }
|
|
location_copy(vmtloc,selfloc);
|
|
{ reset self }
|
|
location_reset(selfloc,LOC_CONSTANT,OS_ADDR);
|
|
end;
|
|
end
|
|
else
|
|
{ class }
|
|
if is_class(methodpointer.resulttype.def) then
|
|
begin
|
|
{ destructor: release instance, flag(vmt)=1
|
|
constructor: direct call, do nothing, leave vmt=0 }
|
|
if (procdefinition.proctypeoption=potype_destructor) then
|
|
begin
|
|
{ flag 1 for destructor: remove data }
|
|
location_reset(vmtloc,LOC_CONSTANT,OS_ADDR);
|
|
vmtloc.value:=1;
|
|
end;
|
|
end
|
|
else
|
|
{ object }
|
|
begin
|
|
{ destructor: direct call, no dispose, vmt=0
|
|
constructor: initialize object, load vmt }
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ vmt }
|
|
location_reset(vmtloc,LOC_REFERENCE,OS_ADDR);
|
|
reference_reset_symbol(vmtloc.reference,objectlibrary.newasmsymboldata(
|
|
tobjectdef(methodpointer.resulttype.def).vmt_mangledname),0);
|
|
vmtrefaddr:=true;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
{ No methodpointer }
|
|
begin
|
|
if (po_staticmethod in procdefinition.procoptions) or
|
|
(po_classmethod in procdefinition.procoptions) then
|
|
begin
|
|
self_is_vmt:=true;
|
|
{ Load VMT from self? }
|
|
if (
|
|
(po_classmethod in procdefinition.procoptions) and
|
|
not(assigned(aktprocdef) and
|
|
(po_classmethod in aktprocdef.procoptions))
|
|
) or
|
|
(
|
|
(po_staticmethod in procdefinition.procoptions) and
|
|
not(assigned(aktprocdef) and
|
|
(po_staticmethod in aktprocdef.procoptions))
|
|
) then
|
|
begin
|
|
if (oo_has_vmt in tprocdef(procdefinition)._class.objectoptions) then
|
|
begin
|
|
{ load vmt from self passed to the current method }
|
|
location_reset(vmtloc,LOC_REGISTER,OS_ADDR);
|
|
vmtloc.register:=cg.g_load_self(exprasmlist);
|
|
cg.g_maybe_testself(exprasmlist,vmtloc.register);
|
|
reference_reset_base(href,vmtloc.register,tprocdef(procdefinition)._class.vmt_offset);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,vmtloc.register);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ self is already VMT }
|
|
location_reset(vmtloc,LOC_REGISTER,OS_ADDR);
|
|
vmtloc.register:=cg.g_load_self(exprasmlist);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ member call, load self }
|
|
location_reset(selfloc,LOC_REGISTER,OS_ADDR);
|
|
selfloc.register:=cg.g_load_self(exprasmlist);
|
|
end;
|
|
end;
|
|
|
|
{ Do we need to push the VMT as self for
|
|
class methods and static methods? }
|
|
if self_is_vmt then
|
|
begin
|
|
location_release(exprasmlist,selfloc);
|
|
location_copy(selfloc,vmtloc);
|
|
end;
|
|
|
|
{ when we need the vmt in a register then we already
|
|
load self in a register so it can generate optimized code }
|
|
if needvmtreg then
|
|
selfloc_to_register;
|
|
|
|
{ constructor/destructor need vmt }
|
|
if (procdefinition.proctypeoption in [potype_constructor,potype_destructor]) then
|
|
begin
|
|
if vmtrefaddr then
|
|
cg.a_paramaddr_ref(exprasmlist,vmtloc.reference,paramanager.getintparaloc(2))
|
|
else
|
|
cg.a_param_loc(exprasmlist,vmtloc,paramanager.getintparaloc(2));
|
|
end;
|
|
if not self_is_vmt then
|
|
location_release(exprasmlist,vmtloc);
|
|
|
|
{ push self }
|
|
if selfrefaddr then
|
|
cg.a_paramaddr_ref(exprasmlist,selfloc.reference,paramanager.getintparaloc(1))
|
|
else
|
|
cg.a_param_loc(exprasmlist,selfloc,paramanager.getintparaloc(1));
|
|
|
|
if needvmtreg then
|
|
begin
|
|
{ self should already be loaded in a register }
|
|
if selfloc.register.number=NR_NO then
|
|
internalerror(2003032611);
|
|
|
|
{ load vmt from self, this is already done
|
|
for static/class methods }
|
|
if not self_is_vmt then
|
|
begin
|
|
cg.g_maybe_testself(exprasmlist,selfloc.register);
|
|
{ this is one point where we need vmt_offset (PM) }
|
|
reference_reset_base(href,selfloc.register,tprocdef(procdefinition)._class.vmt_offset);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,selfloc.register);
|
|
end;
|
|
|
|
result:=selfloc.register;
|
|
end
|
|
else
|
|
location_release(exprasmlist,selfloc);
|
|
end;
|
|
|
|
|
|
procedure tcgcallnode.push_framepointer;
|
|
var
|
|
href : treference;
|
|
hregister : tregister;
|
|
i : integer;
|
|
begin
|
|
{ this routine is itself not nested }
|
|
if lexlevel=(tprocdef(procdefinition).parast.symtablelevel) then
|
|
begin
|
|
reference_reset_base(href,procinfo.framepointer,procinfo.framepointer_offset);
|
|
cg.a_param_ref(exprasmlist,OS_ADDR,href,paramanager.getintparaloc(1));
|
|
end
|
|
{ one nesting level }
|
|
else if (lexlevel=(tprocdef(procdefinition).parast.symtablelevel)-1) then
|
|
begin
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,procinfo.framepointer,paramanager.getintparaloc(1));
|
|
end
|
|
{ very complex nesting level ... }
|
|
else if (lexlevel>(tprocdef(procdefinition).parast.symtablelevel)) then
|
|
begin
|
|
hregister:=rg.getaddressregister(exprasmlist);
|
|
reference_reset_base(href,procinfo.framepointer,procinfo.framepointer_offset);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,hregister);
|
|
for i:=(tprocdef(procdefinition).parast.symtablelevel) to lexlevel-1 do
|
|
begin
|
|
reference_reset_base(href,hregister,procinfo.framepointer_offset);
|
|
cg.a_load_ref_reg(exprasmlist,OS_ADDR,href,hregister);
|
|
end;
|
|
cg.a_param_reg(exprasmlist,OS_ADDR,hregister,paramanager.getintparaloc(1));
|
|
rg.ungetaddressregister(exprasmlist,hregister);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcgcallnode.handle_return_value(inlined:boolean);
|
|
var
|
|
cgsize : tcgsize;
|
|
r,hregister : tregister;
|
|
nr:Tnewregister;
|
|
begin
|
|
{ structured results are easy to handle.... }
|
|
{ needed also when result_no_used !! }
|
|
if paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
|
|
begin
|
|
location_reset(location,LOC_CREFERENCE,def_cgsize(resulttype.def));
|
|
location.reference.symbol:=nil;
|
|
location.reference:=funcretref;
|
|
end
|
|
else
|
|
{ ansi/widestrings must be registered, so we can dispose them }
|
|
if is_ansistring(resulttype.def) or
|
|
is_widestring(resulttype.def) then
|
|
begin
|
|
location_reset(location,LOC_CREFERENCE,OS_ADDR);
|
|
location.reference:=refcountedtemp;
|
|
r.enum:=accumulator;
|
|
cg.a_reg_alloc(exprasmlist,r);
|
|
cg.a_load_reg_ref(exprasmlist,OS_ADDR,r,location.reference);
|
|
cg.a_reg_dealloc(exprasmlist,r);
|
|
end
|
|
else
|
|
{ we have only to handle the result if it is used }
|
|
if (nf_return_value_used in flags) then
|
|
begin
|
|
case resulttype.def.deftype of
|
|
enumdef,
|
|
orddef :
|
|
begin
|
|
cgsize:=def_cgsize(resulttype.def);
|
|
|
|
{ an object constructor is a function with pointer result }
|
|
if (inlined or (right=nil)) and
|
|
(procdefinition.proctypeoption=potype_constructor) then
|
|
cgsize:=OS_ADDR;
|
|
|
|
if cgsize<>OS_NO then
|
|
begin
|
|
location_reset(location,LOC_REGISTER,cgsize);
|
|
{$ifndef cpu64bit}
|
|
if cgsize in [OS_64,OS_S64] then
|
|
begin
|
|
{Move the function result to free registers, preferably the
|
|
accumulator/accumulatorhigh, so no move is necessary.}
|
|
r.enum:=R_INTREGISTER;
|
|
r.number:=NR_ACCUMULATOR;
|
|
hregister.enum:=R_INTREGISTER;
|
|
hregister.number:=NR_ACCUMULATORHIGH;
|
|
cg.a_reg_alloc(exprasmlist,r);
|
|
cg.a_reg_alloc(exprasmlist,hregister);
|
|
if RS_ACCUMULATOR in rg.unusedregsint then
|
|
location.registerlow:=rg.getexplicitregisterint(exprasmlist,NR_ACCUMULATOR)
|
|
else
|
|
location.registerlow:=rg.getregisterint(exprasmlist,OS_INT);
|
|
if RS_ACCUMULATORHIGH in rg.unusedregsint then
|
|
location.registerhigh:=rg.getexplicitregisterint(exprasmlist,NR_ACCUMULATORHIGH)
|
|
else
|
|
location.registerhigh:=rg.getregisterint(exprasmlist,OS_INT);
|
|
cg64.a_load64_reg_reg(exprasmlist,joinreg64(r,hregister),
|
|
location.register64);
|
|
end
|
|
else
|
|
{$endif cpu64bit}
|
|
begin
|
|
{Move the function result to a free register, preferably the
|
|
accumulator, so no move is necessary.}
|
|
nr:=RS_ACCUMULATOR shl 8 or cgsize2subreg(cgsize);
|
|
r.enum:=R_INTREGISTER;
|
|
r.number:=nr;
|
|
cg.a_reg_alloc(exprasmlist,r);
|
|
if RS_ACCUMULATOR in rg.unusedregsint then
|
|
location.register:=rg.getexplicitregisterint(exprasmlist,nr)
|
|
else
|
|
location.register:=rg.getregisterint(exprasmlist,cgsize);
|
|
cg.a_load_reg_reg(exprasmlist,cgsize,cgsize,r,location.register);
|
|
end;
|
|
end;
|
|
end;
|
|
floatdef :
|
|
begin
|
|
location_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def));
|
|
{$ifdef cpufpemu}
|
|
if cs_fp_emulation in aktmoduleswitches then
|
|
location.register.enum := accumulator
|
|
else
|
|
{$endif cpufpemu}
|
|
location.register.enum:=FPU_RESULT_REG;
|
|
{$ifdef x86}
|
|
inc(trgcpu(rg).fpuvaroffset);
|
|
{$endif x86}
|
|
end;
|
|
{$ifdef TEST_WIN32_RECORDS}
|
|
recorddef :
|
|
begin
|
|
if (target_info.system=system_i386_win32) then
|
|
begin
|
|
location_reset(location,LOC_REFERENCE,def_cgsize(resulttype.def));
|
|
tg.GetTemp(exprasmlist,resulttype.size,tt_normal,location);
|
|
{$ifndef cpu64bit}
|
|
if cgsize in [OS_64,OS_S64] then
|
|
cg64.a_load64_reg_loc(exprasmlist,joinreg64(accumulator,accumulatorhigh),location)
|
|
else
|
|
{$endif cpu64bit}
|
|
cg.a_load_reg_loc(exprasmlist,accumulator,location);
|
|
end
|
|
else
|
|
internalerror(200211141);
|
|
end;
|
|
{$endif TEST_WIN32_RECORDS}
|
|
else
|
|
begin
|
|
location_reset(location,LOC_REGISTER,OS_INT);
|
|
if RS_ACCUMULATOR in rg.unusedregsint then
|
|
location.register:=rg.getexplicitregisterint(exprasmlist,NR_ACCUMULATOR)
|
|
else
|
|
location.register:=rg.getregisterint(exprasmlist,OS_INT);
|
|
r.enum:=R_INTREGISTER;
|
|
r.number:=NR_ACCUMULATOR;
|
|
cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,r,location.register);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcgcallnode.pass_2;
|
|
var
|
|
regs_to_push_int : Tsupregset;
|
|
regs_to_push_other : tregisterset;
|
|
unusedstate: pointer;
|
|
pushed : tpushedsaved;
|
|
pushedint : tpushedsavedint;
|
|
hregister : tregister;
|
|
oldpushedparasize : longint;
|
|
{ adress returned from an I/O-error }
|
|
iolabel : tasmlabel;
|
|
{ help reference pointer }
|
|
href : treference;
|
|
hp : tnode;
|
|
pp : tbinarynode;
|
|
params : tnode;
|
|
virtual_vmt_call,
|
|
inlined : boolean;
|
|
inlinecode : tprocinlinenode;
|
|
store_parast_fixup,
|
|
para_alignment,
|
|
para_offset : longint;
|
|
pop_size : longint;
|
|
returnref,
|
|
pararef : treference;
|
|
accreg,
|
|
vmtreg : tregister;
|
|
begin
|
|
iolabel:=nil;
|
|
inlinecode:=nil;
|
|
inlined:=false;
|
|
rg.saveunusedstate(unusedstate);
|
|
|
|
{ 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;
|
|
|
|
{ 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_int := tprocdef(procdefinition).usedintregisters;
|
|
regs_to_push_other := tprocdef(procdefinition).usedotherregisters;
|
|
if (not is_void(resulttype.def)) and
|
|
(not paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption)) then
|
|
begin
|
|
include(regs_to_push_int,RS_ACCUMULATOR);
|
|
{$ifndef cpu64bit}
|
|
if resulttype.def.size>sizeof(aword) then
|
|
include(regs_to_push_int,RS_ACCUMULATORHIGH);
|
|
{$endif cpu64bit}
|
|
end;
|
|
rg.saveusedintregisters(exprasmlist,pushedint,regs_to_push_int);
|
|
rg.saveusedotherregisters(exprasmlist,pushed,regs_to_push_other);
|
|
|
|
{ give used registers through }
|
|
rg.usedintinproc:=rg.usedintinproc + tprocdef(procdefinition).usedintregisters;
|
|
rg.usedinproc:=rg.usedinproc + tprocdef(procdefinition).usedotherregisters;
|
|
end
|
|
else
|
|
begin
|
|
regs_to_push_int := all_intregisters;
|
|
regs_to_push_other := all_registers;
|
|
rg.saveusedintregisters(exprasmlist,pushedint,regs_to_push_int);
|
|
rg.saveusedotherregisters(exprasmlist,pushed,regs_to_push_other);
|
|
rg.usedinproc:=all_registers;
|
|
{ no IO check for methods and procedure variables }
|
|
iolabel:=nil;
|
|
end;
|
|
|
|
{ Initialize for pushing the parameters }
|
|
oldpushedparasize:=pushedparasize;
|
|
pushedparasize:=0;
|
|
pop_size:=0;
|
|
|
|
{ Align stack if required }
|
|
if not inlined then
|
|
pop_size:=align_parasize(oldpushedparasize,para_alignment);
|
|
|
|
{ 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(
|
|
(po_leftright in procdefinition.procoptions),procdefinition.proccalloption,
|
|
para_alignment,para_offset)
|
|
else
|
|
tcallparanode(params).secondcallparan(
|
|
(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 ! }
|
|
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
|
|
{ Virtual function call through VMT? }
|
|
vmtreg.enum:=R_INTREGISTER;
|
|
vmtreg.number:=NR_NO;
|
|
virtual_vmt_call:=(po_virtualmethod in procdefinition.procoptions) and
|
|
not(assigned(methodpointer) and
|
|
(methodpointer.nodetype=typen));
|
|
|
|
{ push self/vmt for methods }
|
|
if assigned(symtableproc) and
|
|
(symtableproc.symtabletype in [withsymtable,objectsymtable]) then
|
|
vmtreg:=push_self_and_vmt(virtual_vmt_call);
|
|
|
|
{ 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
|
|
push_framepointer;
|
|
|
|
rg.saveintregvars(exprasmlist,regs_to_push_int);
|
|
rg.saveotherregvars(exprasmlist,regs_to_push_other);
|
|
|
|
if virtual_vmt_call then
|
|
begin
|
|
{ virtual methods require an index }
|
|
if tprocdef(procdefinition).extnumber=-1 then
|
|
internalerror(200304021);
|
|
{ VMT should already be loaded in a register }
|
|
if vmtreg.number=NR_NO then
|
|
internalerror(200304022);
|
|
|
|
{ test validity of VMT }
|
|
if not(is_interface(tprocdef(procdefinition)._class)) and
|
|
not(is_cppclass(tprocdef(procdefinition)._class)) then
|
|
cg.g_maybe_testvmt(exprasmlist,vmtreg,tprocdef(procdefinition)._class);
|
|
|
|
{ call method }
|
|
reference_reset_base(href,vmtreg,
|
|
tprocdef(procdefinition)._class.vmtmethodoffset(tprocdef(procdefinition).extnumber));
|
|
cg.a_call_ref(exprasmlist,href);
|
|
|
|
{ release self }
|
|
rg.ungetregisterint(exprasmlist,vmtreg);
|
|
end
|
|
else
|
|
begin
|
|
if not inlined then
|
|
begin
|
|
{ Calling interrupt from the same code requires some
|
|
extra code }
|
|
if (po_interrupt in procdefinition.procoptions) then
|
|
extra_interrupt_code;
|
|
|
|
cg.a_call_name(exprasmlist,tprocdef(procdefinition).mangledname);
|
|
end
|
|
else { inlined proc }
|
|
begin
|
|
{ process the inlinecode }
|
|
secondpass(tnode(inlinecode));
|
|
{ free the args }
|
|
if tprocdef(procdefinition).parast.datasize>0 then
|
|
tg.UnGetTemp(exprasmlist,pararef);
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
{ now procedure variable case }
|
|
begin
|
|
secondpass(right);
|
|
|
|
{ Calling interrupt from the same code requires some
|
|
extra code }
|
|
if (po_interrupt in procdefinition.procoptions) then
|
|
extra_interrupt_code;
|
|
|
|
if (po_methodpointer in procdefinition.procoptions) then
|
|
begin
|
|
{ push self, but not if it's already explicitly pushed }
|
|
if not(po_containsself in procdefinition.procoptions) then
|
|
begin
|
|
{ push self }
|
|
href:=right.location.reference;
|
|
inc(href.offset,POINTER_SIZE);
|
|
cg.a_param_ref(exprasmlist,OS_ADDR,href,paramanager.getintparaloc(1));
|
|
end;
|
|
|
|
rg.saveintregvars(exprasmlist,ALL_INTREGISTERS);
|
|
rg.saveotherregvars(exprasmlist,ALL_REGISTERS);
|
|
cg.a_call_ref(exprasmlist,right.location.reference);
|
|
|
|
reference_release(exprasmlist,right.location.reference);
|
|
tg.Ungetiftemp(exprasmlist,right.location.reference);
|
|
end
|
|
else
|
|
begin
|
|
rg.saveintregvars(exprasmlist,ALL_INTREGISTERS);
|
|
rg.saveotherregvars(exprasmlist,ALL_REGISTERS);
|
|
cg.a_call_loc(exprasmlist,right.location);
|
|
location_release(exprasmlist,right.location);
|
|
location_freetemp(exprasmlist,right.location);
|
|
end;
|
|
end;
|
|
|
|
{ Need to remove the parameters from the stack? }
|
|
if (not inlined) and (po_clearstack in procdefinition.procoptions) then
|
|
begin
|
|
{ the old pop_size was already included in pushedparasize }
|
|
pop_size:=pushedparasize;
|
|
end;
|
|
|
|
{ Remove parameters/alignment from the stack }
|
|
if pop_size>0 then
|
|
pop_parasize(pop_size);
|
|
|
|
|
|
{$ifdef powerpc}
|
|
{ this calculation must be done in pass_1 anyway, so don't worry }
|
|
if tppcprocinfo(procinfo).maxpushedparasize<pushedparasize then
|
|
tppcprocinfo(procinfo).maxpushedparasize:=pushedparasize;
|
|
{$endif powerpc}
|
|
|
|
{ Restore }
|
|
pushedparasize:=oldpushedparasize;
|
|
rg.restoreunusedstate(unusedstate);
|
|
{$ifdef TEMPREGDEBUG}
|
|
testregisters32;
|
|
{$endif TEMPREGDEBUG}
|
|
|
|
{ Called an inherited constructor? Then
|
|
we need to check the result }
|
|
if (inlined or (right=nil)) and
|
|
(procdefinition.proctypeoption=potype_constructor) and
|
|
assigned(methodpointer) and
|
|
(methodpointer.nodetype=typen) and
|
|
(aktprocdef.proctypeoption=potype_constructor) then
|
|
begin
|
|
accreg.enum:=R_INTREGISTER;
|
|
accreg.number:=NR_ACCUMULATOR;
|
|
cg.a_reg_alloc(exprasmlist,accreg);
|
|
cg.a_cmp_const_reg_label(exprasmlist,OS_ADDR,OC_EQ,0,accreg,faillabel);
|
|
cg.a_reg_dealloc(exprasmlist,accreg);
|
|
end;
|
|
|
|
{ handle function results }
|
|
if (not is_void(resulttype.def)) then
|
|
handle_return_value(inlined);
|
|
|
|
{ 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;
|
|
|
|
{ restore registers }
|
|
rg.restoreusedotherregisters(exprasmlist,pushed);
|
|
rg.restoreusedintregisters(exprasmlist,pushedint);
|
|
|
|
{ Release temps from parameters }
|
|
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;
|
|
|
|
{ Parameters are not needed anymore }
|
|
if assigned(params) then
|
|
begin
|
|
params.free;
|
|
params:=nil;
|
|
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;
|
|
|
|
{ from now on the result can be freed normally }
|
|
if paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
|
|
tg.ChangeTempType(exprasmlist,funcretref,tt_normal);
|
|
end;
|
|
|
|
{ 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
|
|
{$ifdef x86}
|
|
{ release FPU stack }
|
|
accreg.enum:=FPU_RESULT_REG;
|
|
emit_reg(A_FSTP,S_NO,accreg);
|
|
{
|
|
dec(trgcpu(rg).fpuvaroffset);
|
|
do NOT decrement as the increment before
|
|
is not called for unused results PM }
|
|
{$endif x86}
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGPROCINLINENODE
|
|
*****************************************************************************}
|
|
|
|
|
|
procedure tcgprocinlinenode.pass_2;
|
|
var st : tsymtable;
|
|
oldprocdef : tprocdef;
|
|
ps, i : longint;
|
|
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
|
|
{Fix me!!}
|
|
{tmpreg:=rg.makeregsize(regvars[i].reg,OS_INT);
|
|
rg.makeregvar(tmpreg);}
|
|
internalerror(200301232);
|
|
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 1.44 2003-04-10 17:57:52 peter
|
|
* vs_hidden released
|
|
|
|
Revision 1.43 2003/04/06 21:11:23 olle
|
|
* changed newasmsymbol to newasmsymboldata for data symbols
|
|
|
|
Revision 1.42 2003/04/04 15:38:56 peter
|
|
* moved generic code from n386cal to ncgcal, i386 now also
|
|
uses the generic ncgcal
|
|
|
|
Revision 1.41 2003/03/28 19:16:56 peter
|
|
* generic constructor working for i386
|
|
* remove fixed self register
|
|
* esi added as address register for i386
|
|
|
|
Revision 1.40 2003/03/06 11:35:50 daniel
|
|
* Fixed internalerror 7843 issue
|
|
|
|
Revision 1.39 2003/02/19 22:00:14 daniel
|
|
* Code generator converted to new register notation
|
|
- Horribily outdated todo.txt removed
|
|
|
|
Revision 1.38 2003/02/15 22:17:38 carl
|
|
* bugfix of FPU emulation code
|
|
|
|
Revision 1.37 2003/02/12 22:10:07 carl
|
|
* load_frame_pointer is now generic
|
|
* change fpu emulation routine names
|
|
|
|
Revision 1.36 2003/01/30 21:46:57 peter
|
|
* self fixes for static methods (merged)
|
|
|
|
Revision 1.35 2003/01/22 20:45:15 mazen
|
|
* making math code in RTL compiling.
|
|
*NB : This does NOT mean necessary that it will generate correct code!
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Revision 1.34 2003/01/17 12:03:45 daniel
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* Optalign conditional code adapted to record Tregister
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Revision 1.33 2003/01/08 18:43:56 daniel
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* Tregister changed into a record
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Revision 1.32 2002/12/15 22:50:00 florian
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+ some stuff for the new hidden parameter handling added
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Revision 1.31 2002/12/15 21:30:12 florian
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* tcallnode.paraitem introduced, all references to defcoll removed
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Revision 1.30 2002/11/27 20:04:39 peter
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* cdecl array of const fixes
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Revision 1.29 2002/11/25 17:43:17 peter
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* splitted defbase in defutil,symutil,defcmp
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* merged isconvertable and is_equal into compare_defs(_ext)
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* made operator search faster by walking the list only once
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Revision 1.28 2002/11/18 17:31:54 peter
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* pass proccalloption to ret_in_xxx and push_xxx functions
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Revision 1.27 2002/11/16 15:34:30 florian
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* generic location for float results
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Revision 1.26 2002/11/15 01:58:51 peter
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* merged changes from 1.0.7 up to 04-11
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- -V option for generating bug report tracing
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- more tracing for option parsing
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- errors for cdecl and high()
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- win32 import stabs
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- win32 records<=8 are returned in eax:edx (turned off by default)
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- heaptrc update
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- more info for temp management in .s file with EXTDEBUG
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Revision 1.25 2002/10/05 12:43:25 carl
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* fixes for Delphi 6 compilation
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(warning : Some features do not work under Delphi)
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Revision 1.24 2002/09/30 07:00:45 florian
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* fixes to common code to get the alpha compiler compiled applied
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Revision 1.23 2002/09/17 18:54:02 jonas
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* a_load_reg_reg() now has two size parameters: source and dest. This
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allows some optimizations on architectures that don't encode the
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register size in the register name.
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Revision 1.22 2002/09/07 15:25:02 peter
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* old logs removed and tabs fixed
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Revision 1.21 2002/09/07 11:50:02 jonas
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* fixed small regalloction info bug
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Revision 1.20 2002/09/02 11:25:20 florian
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* fixed generic procedure variable calling
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Revision 1.19 2002/09/01 21:04:48 florian
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* several powerpc related stuff fixed
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Revision 1.18 2002/09/01 18:43:27 peter
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* include accumulator in regs_to_push list
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Revision 1.17 2002/09/01 12:13:00 peter
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* use a_call_reg
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* ungetiftemp for procvar of object temp
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Revision 1.16 2002/08/25 19:25:18 peter
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* sym.insert_in_data removed
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* symtable.insertvardata/insertconstdata added
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* removed insert_in_data call from symtable.insert, it needs to be
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called separatly. This allows to deref the address calculation
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* procedures now calculate the parast addresses after the procedure
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directives are parsed. This fixes the cdecl parast problem
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* push_addr_param has an extra argument that specifies if cdecl is used
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or not
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Revision 1.15 2002/08/23 16:14:48 peter
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* tempgen cleanup
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* tt_noreuse temp type added that will be used in genentrycode
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Revision 1.14 2002/08/20 16:55:38 peter
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* don't write (stabs)line info when inlining a procedure
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Revision 1.13 2002/08/19 19:36:42 peter
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* More fixes for cross unit inlining, all tnodes are now implemented
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* Moved pocall_internconst to po_internconst because it is not a
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calling type at all and it conflicted when inlining of these small
|
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functions was requested
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Revision 1.12 2002/08/18 20:06:23 peter
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* inlining is now also allowed in interface
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* renamed write/load to ppuwrite/ppuload
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* tnode storing in ppu
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* nld,ncon,nbas are already updated for storing in ppu
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Revision 1.11 2002/08/17 22:09:44 florian
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* result type handling in tcgcal.pass_2 overhauled
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* better tnode.dowrite
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* some ppc stuff fixed
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Revision 1.10 2002/08/17 09:23:35 florian
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* first part of procinfo rewrite
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Revision 1.9 2002/08/13 21:40:55 florian
|
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* more fixes for ppc calling conventions
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Revision 1.8 2002/08/13 18:01:51 carl
|
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* rename swatoperands to swapoperands
|
|
+ m68k first compilable version (still needs a lot of testing):
|
|
assembler generator, system information , inline
|
|
assembler reader.
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|
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Revision 1.7 2002/08/12 15:08:39 carl
|
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+ 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
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Revision 1.6 2002/08/11 14:32:26 peter
|
|
* renamed current_library to objectlibrary
|
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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
|
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* all getlabel/newasmsymbol and friends are moved to the new class
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Revision 1.4 2002/08/06 20:55:20 florian
|
|
* first part of ppc calling conventions fix
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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
|
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Revision 1.2 2002/07/13 19:38:43 florian
|
|
* some more generic calling stuff fixed
|
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}
|