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07bf44517c
the IInterface implementation to be XPCom-compatible --- Merging r15997 through r16179 into '.': U rtl/inc/variants.pp U rtl/inc/objpash.inc U rtl/inc/objpas.inc U rtl/objpas/classes/persist.inc U rtl/objpas/classes/compon.inc U rtl/objpas/classes/classesh.inc A tests/test/tconstref1.pp A tests/test/tconstref2.pp A tests/test/tconstref3.pp U tests/test/tinterface4.pp A tests/test/tconstref4.pp U tests/webtbs/tw10897.pp U tests/webtbs/tw4086.pp U tests/webtbs/tw15363.pp U tests/webtbs/tw2177.pp U tests/webtbs/tw16592.pp U tests/tbs/tb0546.pp U compiler/sparc/cpupara.pas U compiler/i386/cpupara.pas U compiler/pdecsub.pas U compiler/symdef.pas U compiler/powerpc/cpupara.pas U compiler/avr/cpupara.pas U compiler/browcol.pas U compiler/defcmp.pas U compiler/powerpc64/cpupara.pas U compiler/ncgrtti.pas U compiler/x86_64/cpupara.pas U compiler/opttail.pas U compiler/htypechk.pas U compiler/tokens.pas U compiler/objcutil.pas U compiler/ncal.pas U compiler/symtable.pas U compiler/symsym.pas U compiler/m68k/cpupara.pas U compiler/regvars.pas U compiler/arm/cpupara.pas U compiler/symconst.pas U compiler/mips/cpupara.pas U compiler/paramgr.pas U compiler/psub.pas U compiler/pdecvar.pas U compiler/dbgstabs.pas U compiler/options.pas U packages/fcl-fpcunit/src/testutils.pp git-svn-id: trunk@16180 -
583 lines
20 KiB
ObjectPascal
583 lines
20 KiB
ObjectPascal
{
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Copyright (c) 2002 by Florian Klaempfl
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Generates the argument location information for 680x0
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{ Generates the argument location information for 680x0.
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}
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unit cpupara;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,
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cpubase,
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aasmdata,
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symconst,symtype,symdef,symsym,
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parabase,paramgr,cgbase;
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type
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{ Returns the location for the nr-st 32 Bit int parameter
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if every parameter before is an 32 Bit int parameter as well
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and if the calling conventions for the helper routines of the
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rtl are used.
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}
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tm68kparamanager = class(tparamanager)
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procedure getintparaloc(calloption : tproccalloption; nr : longint;var cgpara : TCGPara);override;
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function create_paraloc_info(p : tabstractprocdef; side: tcallercallee):longint;override;
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function push_addr_param(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;override;
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function get_funcretloc(p : tabstractprocdef; side: tcallercallee; def: tdef): tcgpara;override;
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procedure createtempparaloc(list: TAsmList;calloption : tproccalloption;parasym : tparavarsym;can_use_final_stack_loc : boolean;var cgpara:TCGPara);
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procedure create_funcretloc_info(p : tabstractprocdef; side: tcallercallee);
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private
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procedure init_values(var curintreg, curfloatreg: tsuperregister; var cur_stack_offset: aword);
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function create_paraloc_info_intern(p : tabstractprocdef; side: tcallercallee; paras: tparalist;
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var curintreg, curfloatreg: tsuperregister; var cur_stack_offset: aword):longint;
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function parseparaloc(p : tparavarsym;const s : string) : boolean;override;
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function parsefuncretloc(p : tabstractprocdef; const s : string) : boolean;override;
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end;
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implementation
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uses
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verbose,
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globals,
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systems,
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cpuinfo,cgutils,
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defutil;
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procedure tm68kparamanager.getintparaloc(calloption : tproccalloption; nr : longint;var cgpara : TCGPara);
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var
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paraloc : pcgparalocation;
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begin
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if nr<1 then
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internalerror(2002070801);
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cgpara.reset;
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cgpara.size:=OS_INT;
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cgpara.alignment:=std_param_align;
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paraloc:=cgpara.add_location;
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with paraloc^ do
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begin
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{ warning : THIS ONLY WORKS WITH INTERNAL ROUTINES,
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WHICH MUST ALWAYS PASS 4-BYTE PARAMETERS!!
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}
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loc:=LOC_REFERENCE;
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reference.index:=NR_STACK_POINTER_REG;
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reference.offset:=target_info.first_parm_offset+nr*4;
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end;
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end;
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function getparaloc(p : tdef) : tcgloc;
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begin
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result:=LOC_REFERENCE;
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{ Later, the LOC_REFERENCE is in most cases changed into LOC_REGISTER
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if push_addr_param for the def is true
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case p.typ of
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orddef:
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result:=LOC_REGISTER;
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floatdef:
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result:=LOC_FPUREGISTER;
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enumdef:
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result:=LOC_REGISTER;
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pointerdef:
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result:=LOC_REGISTER;
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formaldef:
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result:=LOC_REGISTER;
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classrefdef:
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result:=LOC_REGISTER;
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recorddef:
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if (target_info.abi<>abi_powerpc_aix) then
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result:=LOC_REFERENCE
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else
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result:=LOC_REGISTER;
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objectdef:
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if is_object(p) then
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result:=LOC_REFERENCE
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else
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result:=LOC_REGISTER;
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stringdef:
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if is_shortstring(p) or is_longstring(p) then
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result:=LOC_REFERENCE
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else
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result:=LOC_REGISTER;
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procvardef:
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if (po_methodpointer in tprocvardef(p).procoptions) then
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result:=LOC_REFERENCE
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else
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result:=LOC_REGISTER;
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filedef:
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result:=LOC_REGISTER;
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arraydef:
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result:=LOC_REFERENCE;
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setdef:
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if is_smallset(p) then
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result:=LOC_REGISTER
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else
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result:=LOC_REFERENCE;
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variantdef:
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result:=LOC_REFERENCE;
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{ avoid problems with errornous definitions }
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errordef:
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result:=LOC_REGISTER;
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else
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internalerror(2002071001);
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end;
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}
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end;
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{ TODO: copied from ppc cg, needs work}
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function tm68kparamanager.push_addr_param(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;
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begin
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result:=false;
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{ var,out,constref always require address }
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if varspez in [vs_var,vs_out,vs_constref] then
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begin
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result:=true;
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exit;
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end;
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case def.typ of
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variantdef,
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formaldef :
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result:=true;
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recorddef:
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result:=true;
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arraydef:
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result:=(tarraydef(def).highrange>=tarraydef(def).lowrange) or
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is_open_array(def) or
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is_array_of_const(def) or
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is_array_constructor(def);
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objectdef :
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result:=is_object(def);
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setdef :
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result:=not is_smallset(def);
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stringdef :
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result:=tstringdef(def).stringtype in [st_shortstring,st_longstring];
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procvardef :
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result:=po_methodpointer in tprocvardef(def).procoptions;
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end;
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end;
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procedure tm68kparamanager.init_values(var curintreg, curfloatreg: tsuperregister; var cur_stack_offset: aword);
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begin
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cur_stack_offset:=8;
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curintreg:=RS_D0;
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curfloatreg:=RS_FP0;
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end;
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procedure tm68kparamanager.create_funcretloc_info(p: tabstractprocdef; side: tcallercallee);
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begin
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p.funcretloc[side]:=get_funcretloc(p,side,p.returndef);
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end;
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function tm68kparamanager.get_funcretloc(p : tabstractprocdef; side: tcallercallee; def: tdef): tcgpara;
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var
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paraloc : pcgparalocation;
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retcgsize : tcgsize;
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begin
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result.init;
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result.alignment:=get_para_align(p.proccalloption);
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{ void has no location }
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if is_void(def) then
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begin
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paraloc:=result.add_location;
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result.size:=OS_NO;
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result.intsize:=0;
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paraloc^.size:=OS_NO;
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paraloc^.loc:=LOC_VOID;
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exit;
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end;
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{ Constructors return self instead of a boolean }
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if (p.proctypeoption=potype_constructor) then
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begin
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retcgsize:=OS_ADDR;
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result.intsize:=sizeof(pint);
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end
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else
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begin
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retcgsize:=def_cgsize(def);
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result.intsize:=def.size;
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end;
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result.size:=retcgsize;
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{ Return is passed as var parameter }
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if ret_in_param(def,p.proccalloption) then
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begin
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paraloc:=result.add_location;
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paraloc^.loc:=LOC_REFERENCE;
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paraloc^.size:=retcgsize;
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exit;
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end;
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paraloc:=result.add_location;
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{ Return in FPU register? }
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if not(cs_fp_emulation in current_settings.moduleswitches) and (p.returndef.typ=floatdef) then
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begin
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paraloc^.loc:=LOC_FPUREGISTER;
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paraloc^.register:=NR_FPU_RESULT_REG;
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paraloc^.size:=retcgsize;
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end
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else
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{ Return in register }
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begin
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if retcgsize in [OS_64,OS_S64] then
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begin
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{ low 32bits }
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paraloc^.loc:=LOC_REGISTER;
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paraloc^.size:=OS_32;
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if side=callerside then
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paraloc^.register:=NR_FUNCTION_RESULT64_LOW_REG
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else
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paraloc^.register:=NR_FUNCTION_RETURN64_LOW_REG;
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{ high 32bits }
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paraloc:=result.add_location;
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paraloc^.loc:=LOC_REGISTER;
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paraloc^.size:=OS_32;
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if side=calleeside then
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paraloc^.register:=NR_FUNCTION_RESULT64_HIGH_REG
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else
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paraloc^.register:=NR_FUNCTION_RETURN64_HIGH_REG;
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end
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else
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begin
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paraloc^.loc:=LOC_REGISTER;
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paraloc^.size:=retcgsize;
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if side=callerside then
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paraloc^.register:=newreg(R_INTREGISTER,RS_FUNCTION_RESULT_REG,cgsize2subreg(R_INTREGISTER,retcgsize))
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else
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paraloc^.register:=newreg(R_INTREGISTER,RS_FUNCTION_RETURN_REG,cgsize2subreg(R_INTREGISTER,retcgsize));
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end;
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end;
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end;
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function tm68kparamanager.create_paraloc_info(p : tabstractprocdef; side: tcallercallee):longint;
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var
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cur_stack_offset: aword;
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curintreg, curfloatreg: tsuperregister;
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begin
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init_values(curintreg,curfloatreg,cur_stack_offset);
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result:=create_paraloc_info_intern(p,side,p.paras,curintreg,curfloatreg,cur_stack_offset);
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create_funcretloc_info(p,side);
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end;
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function tm68kparamanager.create_paraloc_info_intern(p : tabstractprocdef; side: tcallercallee; paras: tparalist;
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var curintreg, curfloatreg: tsuperregister; var cur_stack_offset: aword):longint;
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var
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paraloc : pcgparalocation;
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hp : tparavarsym;
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paracgsize : tcgsize;
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paralen : aint;
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parasize : longint;
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paradef : tdef;
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i : longint;
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loc : tcgloc;
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nextintreg,
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nextfloatreg : tsuperregister;
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stack_offset : longint;
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begin
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result:=0;
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nextintreg:=curintreg;
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nextfloatreg:=curfloatreg;
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stack_offset:=cur_stack_offset;
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parasize:=0;
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for i:=0 to p.paras.count-1 do
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begin
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hp:=tparavarsym(paras[i]);
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paradef:=hp.vardef;
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{ syscall for AmigaOS can have already a paraloc set }
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if (vo_has_explicit_paraloc in hp.varoptions) then
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begin
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if not(vo_is_syscall_lib in hp.varoptions) then
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internalerror(200506051);
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continue;
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end;
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hp.paraloc[side].reset;
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{ currently only support C-style array of const }
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if (p.proccalloption in [pocall_cdecl,pocall_cppdecl]) and
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is_array_of_const(paradef) then
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begin
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{$ifdef DEBUG_CHARLIE}
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writeln('loc register');
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{$endif DEBUG_CHARLIE}
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paraloc:=hp.paraloc[side].add_location;
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{ hack: the paraloc must be valid, but is not actually used }
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paraloc^.loc:=LOC_REGISTER;
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paraloc^.register:=NR_D0;
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paraloc^.size:=OS_ADDR;
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break;
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end;
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if (hp.varspez in [vs_var,vs_out]) or
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push_addr_param(hp.varspez,paradef,p.proccalloption) or
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is_open_array(paradef) or
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is_array_of_const(paradef) then
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begin
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{$ifdef DEBUG_CHARLIE}
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writeln('loc register');
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{$endif DEBUG_CHARLIE}
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paradef:=voidpointertype;
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loc:=LOC_REGISTER;
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paracgsize := OS_ADDR;
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paralen := tcgsize2size[OS_ADDR];
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end
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else
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begin
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if not is_special_array(paradef) then
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paralen:=paradef.size
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else
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paralen:=tcgsize2size[def_cgsize(paradef)];
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loc:=getparaloc(paradef);
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paracgsize:=def_cgsize(paradef);
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{ for things like formaldef }
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if (paracgsize=OS_NO) then
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begin
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paracgsize:=OS_ADDR;
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paralen := tcgsize2size[OS_ADDR];
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end;
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end;
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hp.paraloc[side].alignment:=std_param_align;
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hp.paraloc[side].size:=paracgsize;
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hp.paraloc[side].intsize:=paralen;
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if (paralen = 0) then
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if (paradef.typ = recorddef) then
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begin
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paraloc:=hp.paraloc[side].add_location;
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paraloc^.loc := LOC_VOID;
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end
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else
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internalerror(200506052);
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{ can become < 0 for e.g. 3-byte records }
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while (paralen > 0) do
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begin
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paraloc:=hp.paraloc[side].add_location;
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{
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by default, the m68k doesn't know any register parameters (FK)
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if (loc = LOC_REGISTER) and
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(nextintreg <= RS_D2) then
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begin
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//writeln('loc register');
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paraloc^.loc := loc;
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{ make sure we don't lose whether or not the type is signed }
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if (paradef.typ <> orddef) then
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paracgsize := int_cgsize(paralen);
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if (paracgsize in [OS_NO,OS_64,OS_S64]) then
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paraloc^.size := OS_INT
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else
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paraloc^.size := paracgsize;
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paraloc^.register:=newreg(R_INTREGISTER,nextintreg,R_SUBNONE);
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inc(nextintreg);
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dec(paralen,tcgsize2size[paraloc^.size]);
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end
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else if (loc = LOC_FPUREGISTER) and
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(nextfloatreg <= RS_FP2) then
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begin
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// writeln('loc fpuregister');
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paraloc^.loc:=loc;
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paraloc^.size := paracgsize;
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paraloc^.register:=newreg(R_FPUREGISTER,nextfloatreg,R_SUBWHOLE);
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inc(nextfloatreg);
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dec(paralen,tcgsize2size[paraloc^.size]);
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end
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else { LOC_REFERENCE }
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}
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begin
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{$ifdef DEBUG_CHARLIE}
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writeln('loc reference');
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{$endif DEBUG_CHARLIE}
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paraloc^.loc:=LOC_REFERENCE;
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paraloc^.size:=int_cgsize(paralen);
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if (side = callerside) then
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paraloc^.reference.index:=NR_STACK_POINTER_REG
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else
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paraloc^.reference.index:=NR_FRAME_POINTER_REG;
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paraloc^.reference.offset:=stack_offset;
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inc(stack_offset,align(paralen,4));
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paralen := 0;
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end;
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end;
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end;
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result:=stack_offset;
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// writeln('stack offset:',stack_offset);
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end;
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{
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if push_addr_param(hp.varspez,paradef,p.proccalloption) then
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paracgsize:=OS_ADDR
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else
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begin
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paracgsize:=def_cgsize(paradef);
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if paracgsize=OS_NO then
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paracgsize:=OS_ADDR;
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end;
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hp.paraloc[side].size:=paracgsize;
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hp.paraloc[side].Alignment:=std_param_align;
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paraloc:=hp.paraloc[side].add_location;
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paraloc^.size:=paracgsize;
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paraloc^.loc:=LOC_REFERENCE;
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if side=callerside then
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paraloc^.reference.index:=NR_STACK_POINTER_REG
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else
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paraloc^.reference.index:=NR_FRAME_POINTER_REG;
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paraloc^.reference.offset:=target_info.first_parm_offset+parasize;
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end;
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create_funcretloc_info(p,side);
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result:=parasize;
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end;
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}
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function tm68kparamanager.parsefuncretloc(p : tabstractprocdef; const s : string) : boolean;
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begin
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result:=false;
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case target_info.system of
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system_m68k_amiga:
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begin
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if s='D0' then
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p.exp_funcretloc:=NR_D0
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else if s='D1' then
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p.exp_funcretloc:=NR_D1
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else if s='D2' then
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p.exp_funcretloc:=NR_D2
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|
else if s='D3' then
|
|
p.exp_funcretloc:=NR_D3
|
|
else if s='D4' then
|
|
p.exp_funcretloc:=NR_D4
|
|
else if s='D5' then
|
|
p.exp_funcretloc:=NR_D5
|
|
else if s='D6' then
|
|
p.exp_funcretloc:=NR_D6
|
|
else if s='D7' then
|
|
p.exp_funcretloc:=NR_D7
|
|
else if s='A0' then
|
|
p.exp_funcretloc:=NR_A0
|
|
else if s='A1' then
|
|
p.exp_funcretloc:=NR_A1
|
|
else if s='A2' then
|
|
p.exp_funcretloc:=NR_A2
|
|
else if s='A3' then
|
|
p.exp_funcretloc:=NR_A3
|
|
else if s='A4' then
|
|
p.exp_funcretloc:=NR_A4
|
|
else if s='A5' then
|
|
p.exp_funcretloc:=NR_A5
|
|
{ 'A6' is problematic, since it's the frame pointer in fpc,
|
|
so it should be saved before a call! }
|
|
else if s='A6' then
|
|
p.exp_funcretloc:=NR_A6
|
|
{ 'A7' is the stack pointer on 68k, can't be overwritten by API calls }
|
|
else
|
|
p.exp_funcretloc:=NR_NO;
|
|
|
|
if p.exp_funcretloc<>NR_NO then result:=true;
|
|
end;
|
|
else
|
|
internalerror(2005121801);
|
|
end;
|
|
end;
|
|
|
|
|
|
function tm68kparamanager.parseparaloc(p : tparavarsym;const s : string) : boolean;
|
|
var
|
|
paraloc : pcgparalocation;
|
|
begin
|
|
result:=false;
|
|
case target_info.system of
|
|
system_m68k_amiga:
|
|
begin
|
|
p.paraloc[callerside].alignment:=4;
|
|
paraloc:=p.paraloc[callerside].add_location;
|
|
paraloc^.loc:=LOC_REGISTER;
|
|
paraloc^.size:=def_cgsize(p.vardef);
|
|
{ pattern is always uppercase'd }
|
|
if s='D0' then
|
|
paraloc^.register:=NR_D0
|
|
else if s='D1' then
|
|
paraloc^.register:=NR_D1
|
|
else if s='D2' then
|
|
paraloc^.register:=NR_D2
|
|
else if s='D3' then
|
|
paraloc^.register:=NR_D3
|
|
else if s='D4' then
|
|
paraloc^.register:=NR_D4
|
|
else if s='D5' then
|
|
paraloc^.register:=NR_D5
|
|
else if s='D6' then
|
|
paraloc^.register:=NR_D6
|
|
else if s='D7' then
|
|
paraloc^.register:=NR_D7
|
|
else if s='A0' then
|
|
paraloc^.register:=NR_A0
|
|
else if s='A1' then
|
|
paraloc^.register:=NR_A1
|
|
else if s='A2' then
|
|
paraloc^.register:=NR_A2
|
|
else if s='A3' then
|
|
paraloc^.register:=NR_A3
|
|
else if s='A4' then
|
|
paraloc^.register:=NR_A4
|
|
else if s='A5' then
|
|
paraloc^.register:=NR_A5
|
|
{ 'A6' is problematic, since it's the frame pointer in fpc,
|
|
so it should be saved before a call! }
|
|
else if s='A6' then
|
|
paraloc^.register:=NR_A6
|
|
{ 'A7' is the stack pointer on 68k, can't be overwritten by API calls }
|
|
else
|
|
exit;
|
|
|
|
{ copy to callee side }
|
|
p.paraloc[calleeside].add_location^:=paraloc^;
|
|
end;
|
|
else
|
|
internalerror(200405092);
|
|
end;
|
|
result:=true;
|
|
end;
|
|
|
|
|
|
procedure tm68kparamanager.createtempparaloc(list: TAsmList;calloption : tproccalloption;parasym : tparavarsym;can_use_final_stack_loc : boolean;var cgpara:TCGPara);
|
|
var
|
|
paraloc : pcgparalocation;
|
|
begin
|
|
paraloc:=parasym.paraloc[callerside].location;
|
|
{ Never a need for temps when value is pushed (calls inside parameters
|
|
will simply allocate even more stack space for their parameters) }
|
|
if not(use_fixed_stack) then
|
|
can_use_final_stack_loc:=true;
|
|
inherited createtempparaloc(list,calloption,parasym,can_use_final_stack_loc,cgpara);
|
|
end;
|
|
|
|
begin
|
|
paramanager:=tm68kparamanager.create;
|
|
end.
|