mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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1604 lines
71 KiB
ObjectPascal
1604 lines
71 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 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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{$ifdef FPC}
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{$goto on}
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{$endif FPC}
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unit cg386cal;
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interface
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{ $define AnsiStrRef}
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uses
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symtable,tree;
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procedure secondcallparan(var p : ptree;defcoll : pparaitem;
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push_from_left_to_right,inlined,is_cdecl : boolean;para_alignment,para_offset : longint);
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procedure secondcalln(var p : ptree);
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procedure secondprocinline(var p : ptree);
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implementation
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uses
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globtype,systems,
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cobjects,verbose,globals,
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symconst,aasm,types,
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{$ifdef GDB}
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strings,gdb,
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{$endif GDB}
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hcodegen,temp_gen,pass_2,
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cpubase,cpuasm,
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cgai386,tgeni386,cg386ld;
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{*****************************************************************************
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SecondCallParaN
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*****************************************************************************}
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procedure secondcallparan(var p : ptree;defcoll : pparaitem;
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push_from_left_to_right,inlined,is_cdecl : boolean;para_alignment,para_offset : longint);
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procedure maybe_push_high;
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begin
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{ open array ? }
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{ defcoll^.data can be nil for read/write }
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if assigned(defcoll^.paratype.def) and
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push_high_param(defcoll^.paratype.def) then
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begin
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if assigned(p^.hightree) then
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begin
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secondpass(p^.hightree);
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{ this is a longint anyway ! }
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push_value_para(p^.hightree,inlined,false,para_offset,4);
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end
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else
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internalerror(432645);
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end;
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end;
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procedure prepareout(const r : treference);
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var
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hr : treference;
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pushed : tpushed;
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begin
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{ out parameters needs to be finalized }
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if (defcoll^.paratype.def^.needs_inittable) then
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begin
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reset_reference(hr);
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hr.symbol:=defcoll^.paratype.def^.get_inittable_label;
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emitpushreferenceaddr(hr);
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emitpushreferenceaddr(r);
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emitcall('FPC_FINALIZE');
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end
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else
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{ or at least it zeroed out }
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begin
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case defcoll^.paratype.def^.size of
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1:
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emit_const_ref(A_MOV,S_B,0,newreference(r));
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2:
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emit_const_ref(A_MOV,S_W,0,newreference(r));
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4:
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emit_const_ref(A_MOV,S_L,0,newreference(r));
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else
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begin
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pushusedregisters(pushed,$ff);
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emit_const(A_PUSH,S_W,0);
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push_int(defcoll^.paratype.def^.size);
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emitpushreferenceaddr(r);
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emitcall('FPC_FILLCHAR');
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popusedregisters(pushed);
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end
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end;
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end;
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end;
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var
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otlabel,oflabel : pasmlabel;
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{ temporary variables: }
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tempdeftype : tdeftype;
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r : preference;
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begin
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{ set default para_alignment to target_os.stackalignment }
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if para_alignment=0 then
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para_alignment:=target_os.stackalignment;
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{ push from left to right if specified }
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if push_from_left_to_right and assigned(p^.right) then
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secondcallparan(p^.right,pparaitem(defcoll^.next),push_from_left_to_right,
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inlined,is_cdecl,para_alignment,para_offset);
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otlabel:=truelabel;
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oflabel:=falselabel;
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getlabel(truelabel);
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getlabel(falselabel);
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secondpass(p^.left);
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{ filter array constructor with c styled args }
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if is_array_constructor(p^.left^.resulttype) and p^.left^.cargs 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.. defcoll^.data is set to nil }
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else if assigned(defcoll^.paratype.def) and
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(defcoll^.paratype.def^.deftype=formaldef) then
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begin
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{ allow @var }
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inc(pushedparasize,4);
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if (p^.left^.treetype=addrn) and
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(not p^.left^.procvarload) then
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begin
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{ always a register }
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if inlined then
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begin
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r:=new_reference(procinfo^.framepointer,para_offset-pushedparasize);
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emit_reg_ref(A_MOV,S_L,
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p^.left^.location.register,r);
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end
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else
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emit_reg(A_PUSH,S_L,p^.left^.location.register);
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ungetregister32(p^.left^.location.register);
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end
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else
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begin
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if not(p^.left^.location.loc in [LOC_MEM,LOC_REFERENCE]) then
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CGMessage(type_e_mismatch)
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else
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begin
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if inlined then
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begin
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{$ifndef noAllocEdi}
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getexplicitregister32(R_EDI);
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{$endif noAllocEdi}
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emit_ref_reg(A_LEA,S_L,
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newreference(p^.left^.location.reference),R_EDI);
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r:=new_reference(procinfo^.framepointer,para_offset-pushedparasize);
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emit_reg_ref(A_MOV,S_L,R_EDI,r);
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{$ifndef noAllocEdi}
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ungetregister32(R_EDI);
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{$endif noAllocEdi}
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end
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else
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emitpushreferenceaddr(p^.left^.location.reference);
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del_reference(p^.left^.location.reference);
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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 (defcoll^.paratyp in [vs_var,vs_out]) then
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begin
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if (p^.left^.location.loc<>LOC_REFERENCE) then
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CGMessage(cg_e_var_must_be_reference);
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maybe_push_high;
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inc(pushedparasize,4);
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if inlined then
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begin
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{$ifndef noAllocEdi}
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getexplicitregister32(R_EDI);
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{$endif noAllocEdi}
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emit_ref_reg(A_LEA,S_L,
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newreference(p^.left^.location.reference),R_EDI);
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r:=new_reference(procinfo^.framepointer,para_offset-pushedparasize);
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emit_reg_ref(A_MOV,S_L,R_EDI,r);
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{$ifndef noAllocEdi}
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ungetregister32(R_EDI);
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{$endif noAllocEdi}
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end
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else
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emitpushreferenceaddr(p^.left^.location.reference);
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if defcoll^.paratyp=vs_out then
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prepareout(p^.left^.location.reference);
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del_reference(p^.left^.location.reference);
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end
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else
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begin
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tempdeftype:=p^.resulttype^.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 arrays (PFV) }
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if ((assigned(defcoll^.paratype.def) and
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is_open_array(defcoll^.paratype.def)) or
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push_addr_param(p^.resulttype)) and
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not is_cdecl then
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begin
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maybe_push_high;
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inc(pushedparasize,4);
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if inlined then
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begin
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{$ifndef noAllocEdi}
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getexplicitregister32(R_EDI);
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{$endif noAllocEdi}
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emit_ref_reg(A_LEA,S_L,
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newreference(p^.left^.location.reference),R_EDI);
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r:=new_reference(procinfo^.framepointer,para_offset-pushedparasize);
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emit_reg_ref(A_MOV,S_L,R_EDI,r);
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{$ifndef noAllocEdi}
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ungetregister32(R_EDI);
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{$endif noAllocEdi}
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end
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else
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emitpushreferenceaddr(p^.left^.location.reference);
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del_reference(p^.left^.location.reference);
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end
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else
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begin
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push_value_para(p^.left,inlined,is_cdecl,
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para_offset,para_alignment);
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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(p^.right) then
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secondcallparan(p^.right,pparaitem(defcoll^.next),push_from_left_to_right,
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inlined,is_cdecl,para_alignment,para_offset);
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end;
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{*****************************************************************************
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SecondCallN
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*****************************************************************************}
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procedure secondcalln(var p : ptree);
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var
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unusedregisters : tregisterset;
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usablecount : byte;
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pushed : tpushed;
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hr,funcretref : treference;
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hregister,hregister2 : tregister;
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oldpushedparasize : longint;
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{ true if ESI must be loaded again after the subroutine }
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loadesi : boolean;
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{ true if a virtual method must be called directly }
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no_virtual_call : boolean;
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{ true if we produce a con- or destrutor in a call }
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is_con_or_destructor : boolean;
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{ true if a constructor is called again }
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extended_new : boolean;
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{ adress returned from an I/O-error }
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iolabel : pasmlabel;
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{ lexlevel count }
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i : longint;
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{ help reference pointer }
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r : preference;
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hp,
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pp,params : ptree;
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inlined : boolean;
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inlinecode : ptree;
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para_alignment,
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para_offset : longint;
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{ instruction for alignement correction }
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{ corr : paicpu;}
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{ we must pop this size also after !! }
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{ must_pop : boolean; }
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pop_size : longint;
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pop_allowed : boolean;
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pop_esp : boolean;
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push_size : longint;
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label
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dont_call;
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begin
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reset_reference(p^.location.reference);
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extended_new:=false;
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iolabel:=nil;
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inlinecode:=nil;
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inlined:=false;
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loadesi:=true;
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no_virtual_call:=false;
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unusedregisters:=unused;
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usablecount:=usablereg32;
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if (pocall_cdecl in p^.procdefinition^.proccalloptions) or
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(pocall_stdcall in p^.procdefinition^.proccalloptions) then
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para_alignment:=4
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else
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para_alignment:=target_os.stackalignment;
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if not assigned(p^.procdefinition) then
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exit;
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{ Deciding whether we may still need the parameters happens next (JM) }
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params:=p^.left;
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if (pocall_inline in p^.procdefinition^.proccalloptions) then
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begin
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{ make a copy for the next time the procedure is inlined (JM) }
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p^.left:=getcopy(p^.left);
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inlined:=true;
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inlinecode:=p^.right;
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{ set it to the same lexical level as the local symtable, becuase
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the para's are stored there }
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pprocdef(p^.procdefinition)^.parast^.symtablelevel:=aktprocsym^.definition^.localst^.symtablelevel;
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if assigned(params) then
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inlinecode^.para_offset:=gettempofsizepersistant(inlinecode^.para_size);
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pprocdef(p^.procdefinition)^.parast^.address_fixup:=inlinecode^.para_offset;
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{$ifdef extdebug}
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Comment(V_debug,
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'inlined parasymtable is at offset '
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+tostr(pprocdef(p^.procdefinition)^.parast^.address_fixup));
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exprasmlist^.concat(new(pai_asm_comment,init(
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strpnew('inlined parasymtable is at offset '
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+tostr(pprocdef(p^.procdefinition)^.parast^.address_fixup)))));
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{$endif extdebug}
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{ copy for the next time the procedure is inlined (JM) }
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p^.right:=getcopy(p^.right);
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{ disable further inlining of the same proc
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in the args }
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exclude(p^.procdefinition^.proccalloptions,pocall_inline);
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end
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else
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{ parameters not necessary anymore (JM) }
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p^.left := nil;
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{ only if no proc var }
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if inlined or
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not(assigned(p^.right)) then
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is_con_or_destructor:=(p^.procdefinition^.proctypeoption in [potype_constructor,potype_destructor]);
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{ proc variables destroy all registers }
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if (inlined or
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(p^.right=nil)) and
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{ virtual methods too }
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not(po_virtualmethod in p^.procdefinition^.procoptions) then
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begin
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if (cs_check_io in aktlocalswitches) and
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(po_iocheck in p^.procdefinition^.procoptions) and
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not(po_iocheck in aktprocsym^.definition^.procoptions) then
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begin
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getaddrlabel(iolabel);
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emitlab(iolabel);
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end
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else
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iolabel:=nil;
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{ save all used registers }
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pushusedregisters(pushed,pprocdef(p^.procdefinition)^.usedregisters);
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{ give used registers through }
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usedinproc:=usedinproc or pprocdef(p^.procdefinition)^.usedregisters;
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end
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else
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begin
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pushusedregisters(pushed,$ff);
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usedinproc:=$ff;
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{ no IO check for methods and procedure variables }
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iolabel:=nil;
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end;
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{ generate the code for the parameter and push them }
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oldpushedparasize:=pushedparasize;
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pushedparasize:=0;
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pop_size:=0;
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{ no inc esp for inlined procedure
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and for objects constructors PM }
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if (inlined or
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(p^.right=nil)) and
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(p^.procdefinition^.proctypeoption=potype_constructor) and
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{ quick'n'dirty check if it is a class or an object }
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(p^.resulttype^.deftype=orddef) then
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pop_allowed:=false
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else
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pop_allowed:=true;
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if pop_allowed then
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begin
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{ Old pushedsize aligned on 4 ? }
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i:=oldpushedparasize and 3;
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if i>0 then
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inc(pop_size,4-i);
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{ This parasize aligned on 4 ? }
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i:=p^.procdefinition^.para_size(para_alignment) and 3;
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if i>0 then
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inc(pop_size,4-i);
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{ insert the opcode and update pushedparasize }
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{ never push 4 or more !! }
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pop_size:=pop_size mod 4;
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if pop_size>0 then
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begin
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inc(pushedparasize,pop_size);
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emit_const_reg(A_SUB,S_L,pop_size,R_ESP);
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{$ifdef GDB}
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if (cs_debuginfo in aktmoduleswitches) and
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(exprasmlist^.first=exprasmlist^.last) then
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exprasmlist^.concat(new(pai_force_line,init));
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{$endif GDB}
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end;
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end;
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if pop_allowed and (cs_align in aktglobalswitches) then
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begin
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pop_esp:=true;
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push_size:=p^.procdefinition^.para_size(para_alignment);
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{ !!!! here we have to take care of return type, self
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and nested procedures
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}
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inc(push_size,12);
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emit_reg_reg(A_MOV,S_L,R_ESP,R_EDI);
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if (push_size mod 8)=0 then
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emit_const_reg(A_AND,S_L,$fffffff8,R_ESP)
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else
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begin
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emit_const_reg(A_SUB,S_L,push_size,R_ESP);
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emit_const_reg(A_AND,S_L,$fffffff8,R_ESP);
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emit_const_reg(A_SUB,S_L,push_size,R_ESP);
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end;
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emit_reg(A_PUSH,S_L,R_EDI);
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end
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else
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pop_esp:=false;
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if (p^.resulttype<>pdef(voiddef)) and
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ret_in_param(p^.resulttype) then
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begin
|
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funcretref.symbol:=nil;
|
|
{$ifdef test_dest_loc}
|
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if dest_loc_known and (dest_loc_tree=p) and
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(dest_loc.loc in [LOC_REFERENCE,LOC_MEM]) then
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begin
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funcretref:=dest_loc.reference;
|
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if assigned(dest_loc.reference.symbol) then
|
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funcretref.symbol:=stringdup(dest_loc.reference.symbol^);
|
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in_dest_loc:=true;
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end
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else
|
|
{$endif test_dest_loc}
|
|
if inlined then
|
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begin
|
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reset_reference(funcretref);
|
|
funcretref.offset:=gettempofsizepersistant(p^.procdefinition^.rettype.def^.size);
|
|
funcretref.base:=procinfo^.framepointer;
|
|
end
|
|
else
|
|
gettempofsizereference(p^.procdefinition^.rettype.def^.size,funcretref);
|
|
end;
|
|
if assigned(params) then
|
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begin
|
|
{ be found elsewhere }
|
|
if inlined then
|
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para_offset:=pprocdef(p^.procdefinition)^.parast^.address_fixup+
|
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pprocdef(p^.procdefinition)^.parast^.datasize
|
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else
|
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para_offset:=0;
|
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if not(inlined) and
|
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assigned(p^.right) then
|
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secondcallparan(params,pparaitem(pabstractprocdef(p^.right^.resulttype)^.para^.first),
|
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(pocall_leftright in p^.procdefinition^.proccalloptions),inlined,
|
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(pocall_cdecl in p^.procdefinition^.proccalloptions),
|
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para_alignment,para_offset)
|
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else
|
|
secondcallparan(params,pparaitem(p^.procdefinition^.para^.first),
|
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(pocall_leftright in p^.procdefinition^.proccalloptions),inlined,
|
|
(pocall_cdecl in p^.procdefinition^.proccalloptions),
|
|
para_alignment,para_offset);
|
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end;
|
|
if inlined then
|
|
inlinecode^.retoffset:=gettempofsizepersistant(4);
|
|
if ret_in_param(p^.resulttype) then
|
|
begin
|
|
{ This must not be counted for C code
|
|
complex return address is removed from stack
|
|
by function itself ! }
|
|
{$ifdef OLD_C_STACK}
|
|
inc(pushedparasize,4); { lets try without it PM }
|
|
{$endif not OLD_C_STACK}
|
|
if inlined then
|
|
begin
|
|
{$ifndef noAllocEdi}
|
|
getexplicitregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
emit_ref_reg(A_LEA,S_L,
|
|
newreference(funcretref),R_EDI);
|
|
r:=new_reference(procinfo^.framepointer,inlinecode^.retoffset);
|
|
emit_reg_ref(A_MOV,S_L,R_EDI,r);
|
|
{$ifndef noAllocEdi}
|
|
ungetregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
end
|
|
else
|
|
emitpushreferenceaddr(funcretref);
|
|
end;
|
|
{ procedure variable ? }
|
|
if inlined or
|
|
(p^.right=nil) then
|
|
begin
|
|
{ overloaded operator have no symtable }
|
|
{ push self }
|
|
if assigned(p^.symtable) and
|
|
(p^.symtable^.symtabletype=withsymtable) then
|
|
begin
|
|
{ dirty trick to avoid the secondcall below }
|
|
p^.methodpointer:=genzeronode(callparan);
|
|
p^.methodpointer^.location.loc:=LOC_REGISTER;
|
|
{$ifndef noAllocEDI}
|
|
getexplicitregister32(R_ESI);
|
|
{$endif noAllocEDI}
|
|
p^.methodpointer^.location.register:=R_ESI;
|
|
{ ARGHHH this is wrong !!!
|
|
if we can init from base class for a child
|
|
class that the wrong VMT will be
|
|
transfered to constructor !! }
|
|
p^.methodpointer^.resulttype:=
|
|
ptree(pwithsymtable(p^.symtable)^.withnode)^.left^.resulttype;
|
|
{ change dispose type !! }
|
|
p^.disposetyp:=dt_mbleft_and_method;
|
|
{ make a reference }
|
|
new(r);
|
|
reset_reference(r^);
|
|
{ if assigned(ptree(pwithsymtable(p^.symtable)^.withnode)^.pref) then
|
|
begin
|
|
r^:=ptree(pwithsymtable(p^.symtable)^.withnode)^.pref^;
|
|
end
|
|
else
|
|
begin
|
|
r^.offset:=p^.symtable^.datasize;
|
|
r^.base:=procinfo^.framepointer;
|
|
end; }
|
|
r^:=ptree(pwithsymtable(p^.symtable)^.withnode)^.withreference^;
|
|
if (not pwithsymtable(p^.symtable)^.direct_with) or
|
|
pobjectdef(p^.methodpointer^.resulttype)^.is_class then
|
|
emit_ref_reg(A_MOV,S_L,r,R_ESI)
|
|
else
|
|
emit_ref_reg(A_LEA,S_L,r,R_ESI);
|
|
end;
|
|
|
|
{ push self }
|
|
if assigned(p^.symtable) and
|
|
((p^.symtable^.symtabletype=objectsymtable) or
|
|
(p^.symtable^.symtabletype=withsymtable)) then
|
|
begin
|
|
if assigned(p^.methodpointer) then
|
|
begin
|
|
{
|
|
if p^.methodpointer^.resulttype=classrefdef then
|
|
begin
|
|
two possibilities:
|
|
1. constructor
|
|
2. class method
|
|
|
|
end
|
|
else }
|
|
begin
|
|
case p^.methodpointer^.treetype of
|
|
typen:
|
|
begin
|
|
{ direct call to inherited method }
|
|
if (po_abstractmethod in p^.procdefinition^.procoptions) then
|
|
begin
|
|
CGMessage(cg_e_cant_call_abstract_method);
|
|
goto dont_call;
|
|
end;
|
|
{ generate no virtual call }
|
|
no_virtual_call:=true;
|
|
|
|
if (sp_static in p^.symtableprocentry^.symoptions) then
|
|
begin
|
|
{ well lets put the VMT address directly into ESI }
|
|
{ it is kind of dirty but that is the simplest }
|
|
{ way to accept virtual static functions (PM) }
|
|
loadesi:=true;
|
|
{ if no VMT just use $0 bug0214 PM }
|
|
{$ifndef noAllocEDI}
|
|
getexplicitregister32(R_ESI);
|
|
{$endif noAllocEDI}
|
|
if not(oo_has_vmt in pobjectdef(p^.methodpointer^.resulttype)^.objectoptions) then
|
|
emit_const_reg(A_MOV,S_L,0,R_ESI)
|
|
else
|
|
begin
|
|
emit_sym_ofs_reg(A_MOV,S_L,
|
|
newasmsymbol(pobjectdef(p^.methodpointer^.resulttype)^.vmt_mangledname),
|
|
0,R_ESI);
|
|
end;
|
|
{ emit_reg(A_PUSH,S_L,R_ESI);
|
|
this is done below !! }
|
|
end
|
|
else
|
|
{ this is a member call, so ESI isn't modfied }
|
|
loadesi:=false;
|
|
|
|
{ a class destructor needs a flag }
|
|
if pobjectdef(p^.methodpointer^.resulttype)^.is_class and
|
|
{assigned(aktprocsym) and
|
|
(aktprocsym^.definition^.proctypeoption=potype_destructor)}
|
|
(p^.procdefinition^.proctypeoption=potype_destructor) then
|
|
begin
|
|
push_int(0);
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end;
|
|
|
|
if not(is_con_or_destructor and
|
|
pobjectdef(p^.methodpointer^.resulttype)^.is_class and
|
|
{assigned(aktprocsym) and
|
|
(aktprocsym^.definition^.proctypeoption in [potype_constructor,potype_destructor])}
|
|
(p^.procdefinition^.proctypeoption in [potype_constructor,potype_destructor])
|
|
) then
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
{ if an inherited con- or destructor should be }
|
|
{ called in a con- or destructor then a warning }
|
|
{ will be made }
|
|
{ con- and destructors need a pointer to the vmt }
|
|
if is_con_or_destructor and
|
|
not(pobjectdef(p^.methodpointer^.resulttype)^.is_class) and
|
|
assigned(aktprocsym) then
|
|
begin
|
|
if not(aktprocsym^.definition^.proctypeoption in
|
|
[potype_constructor,potype_destructor]) then
|
|
CGMessage(cg_w_member_cd_call_from_method);
|
|
end;
|
|
{ class destructors get there flag above }
|
|
{ constructor flags ? }
|
|
if is_con_or_destructor and
|
|
not(pobjectdef(p^.methodpointer^.resulttype)^.is_class and
|
|
assigned(aktprocsym) and
|
|
(aktprocsym^.definition^.proctypeoption=potype_destructor)) then
|
|
begin
|
|
{ a constructor needs also a flag }
|
|
if pobjectdef(p^.methodpointer^.resulttype)^.is_class then
|
|
push_int(0);
|
|
push_int(0);
|
|
end;
|
|
end;
|
|
hnewn:
|
|
begin
|
|
{ extended syntax of new }
|
|
{ ESI must be zero }
|
|
{$ifndef noAllocEDI}
|
|
getexplicitregister32(R_ESI);
|
|
{$endif noAllocEDI}
|
|
emit_reg_reg(A_XOR,S_L,R_ESI,R_ESI);
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
{ insert the vmt }
|
|
emit_sym(A_PUSH,S_L,
|
|
newasmsymbol(pobjectdef(p^.methodpointer^.resulttype)^.vmt_mangledname));
|
|
extended_new:=true;
|
|
end;
|
|
hdisposen:
|
|
begin
|
|
secondpass(p^.methodpointer);
|
|
|
|
{ destructor with extended syntax called from dispose }
|
|
{ hdisposen always deliver LOC_REFERENCE }
|
|
{$ifndef noAllocEDI}
|
|
getexplicitregister32(R_ESI);
|
|
{$endif noAllocEDI}
|
|
emit_ref_reg(A_LEA,S_L,
|
|
newreference(p^.methodpointer^.location.reference),R_ESI);
|
|
del_reference(p^.methodpointer^.location.reference);
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
emit_sym(A_PUSH,S_L,
|
|
newasmsymbol(pobjectdef(p^.methodpointer^.resulttype)^.vmt_mangledname));
|
|
end;
|
|
else
|
|
begin
|
|
{ call to an instance member }
|
|
if (p^.symtable^.symtabletype<>withsymtable) then
|
|
begin
|
|
secondpass(p^.methodpointer);
|
|
{$ifndef noAllocEDI}
|
|
getexplicitregister32(R_ESI);
|
|
{$endif noAllocEDI}
|
|
case p^.methodpointer^.location.loc of
|
|
LOC_CREGISTER,
|
|
LOC_REGISTER:
|
|
begin
|
|
emit_reg_reg(A_MOV,S_L,p^.methodpointer^.location.register,R_ESI);
|
|
ungetregister32(p^.methodpointer^.location.register);
|
|
end;
|
|
else
|
|
begin
|
|
if (p^.methodpointer^.resulttype^.deftype=classrefdef) or
|
|
((p^.methodpointer^.resulttype^.deftype=objectdef) and
|
|
pobjectdef(p^.methodpointer^.resulttype)^.is_class) then
|
|
emit_ref_reg(A_MOV,S_L,
|
|
newreference(p^.methodpointer^.location.reference),R_ESI)
|
|
else
|
|
emit_ref_reg(A_LEA,S_L,
|
|
newreference(p^.methodpointer^.location.reference),R_ESI);
|
|
del_reference(p^.methodpointer^.location.reference);
|
|
end;
|
|
end;
|
|
end;
|
|
{ when calling a class method, we have to load ESI with the VMT !
|
|
But, not for a class method via self }
|
|
if not(po_containsself in p^.procdefinition^.procoptions) then
|
|
begin
|
|
if (po_classmethod in p^.procdefinition^.procoptions) and
|
|
not(p^.methodpointer^.resulttype^.deftype=classrefdef) then
|
|
begin
|
|
{ class method needs current VMT }
|
|
getexplicitregister32(R_ESI);
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_ESI;
|
|
r^.offset:= pprocdef(p^.procdefinition)^._class^.vmt_offset;
|
|
emit_ref_reg(A_MOV,S_L,r,R_ESI);
|
|
end;
|
|
|
|
{ direct call to destructor: remove data }
|
|
if (p^.procdefinition^.proctypeoption=potype_destructor) and
|
|
(p^.methodpointer^.resulttype^.deftype=objectdef) and
|
|
(pobjectdef(p^.methodpointer^.resulttype)^.is_class) then
|
|
emit_const(A_PUSH,S_L,1);
|
|
|
|
{ direct call to class constructor, don't allocate memory }
|
|
if (p^.procdefinition^.proctypeoption=potype_constructor) and
|
|
(p^.methodpointer^.resulttype^.deftype=objectdef) and
|
|
(pobjectdef(p^.methodpointer^.resulttype)^.is_class) then
|
|
begin
|
|
emit_const(A_PUSH,S_L,0);
|
|
emit_const(A_PUSH,S_L,0);
|
|
end
|
|
else
|
|
begin
|
|
{ constructor call via classreference => allocate memory }
|
|
if (p^.procdefinition^.proctypeoption=potype_constructor) and
|
|
(p^.methodpointer^.resulttype^.deftype=classrefdef) and
|
|
(pobjectdef(pclassrefdef(p^.methodpointer^.resulttype)^.
|
|
pointertype.def)^.is_class) then
|
|
emit_const(A_PUSH,S_L,1);
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end;
|
|
end;
|
|
|
|
if is_con_or_destructor then
|
|
begin
|
|
{ classes don't get a VMT pointer pushed }
|
|
if (p^.methodpointer^.resulttype^.deftype=objectdef) and
|
|
not(pobjectdef(p^.methodpointer^.resulttype)^.is_class) then
|
|
begin
|
|
if (p^.procdefinition^.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ it's no bad idea, to insert the VMT }
|
|
emit_sym(A_PUSH,S_L,newasmsymbol(
|
|
pobjectdef(p^.methodpointer^.resulttype)^.vmt_mangledname));
|
|
end
|
|
{ destructors haven't to dispose the instance, if this is }
|
|
{ a direct call }
|
|
else
|
|
push_int(0);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if (po_classmethod in p^.procdefinition^.procoptions) and
|
|
not(
|
|
assigned(aktprocsym) and
|
|
(po_classmethod in aktprocsym^.definition^.procoptions)
|
|
) then
|
|
begin
|
|
{ class method needs current VMT }
|
|
getexplicitregister32(R_ESI);
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_ESI;
|
|
r^.offset:= pprocdef(p^.procdefinition)^._class^.vmt_offset;
|
|
emit_ref_reg(A_MOV,S_L,r,R_ESI);
|
|
end
|
|
else
|
|
begin
|
|
{ member call, ESI isn't modified }
|
|
loadesi:=false;
|
|
end;
|
|
{ direct call to destructor: don't remove data! }
|
|
if procinfo^._class^.is_class then
|
|
begin
|
|
if (p^.procdefinition^.proctypeoption=potype_destructor) then
|
|
begin
|
|
emit_const(A_PUSH,S_L,0);
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end
|
|
else if (p^.procdefinition^.proctypeoption=potype_constructor) then
|
|
begin
|
|
emit_const(A_PUSH,S_L,0);
|
|
emit_const(A_PUSH,S_L,0);
|
|
end
|
|
else
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end
|
|
else
|
|
begin
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
if is_con_or_destructor then
|
|
begin
|
|
if (p^.procdefinition^.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ it's no bad idea, to insert the VMT }
|
|
emit_sym(A_PUSH,S_L,newasmsymbol(
|
|
procinfo^._class^.vmt_mangledname));
|
|
end
|
|
{ destructors haven't to dispose the instance, if this is }
|
|
{ a direct call }
|
|
else
|
|
push_int(0);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ push base pointer ?}
|
|
if (lexlevel>=normal_function_level) and assigned(pprocdef(p^.procdefinition)^.parast) and
|
|
((pprocdef(p^.procdefinition)^.parast^.symtablelevel)>normal_function_level) then
|
|
begin
|
|
{ if we call a nested function in a method, we must }
|
|
{ push also SELF! }
|
|
{ THAT'S NOT TRUE, we have to load ESI via frame pointer }
|
|
{ access }
|
|
{
|
|
begin
|
|
loadesi:=false;
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end;
|
|
}
|
|
if lexlevel=(pprocdef(p^.procdefinition)^.parast^.symtablelevel) then
|
|
begin
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.offset:=procinfo^.framepointer_offset;
|
|
r^.base:=procinfo^.framepointer;
|
|
emit_ref(A_PUSH,S_L,r)
|
|
end
|
|
{ this is only true if the difference is one !!
|
|
but it cannot be more !! }
|
|
else if (lexlevel=pprocdef(p^.procdefinition)^.parast^.symtablelevel-1) then
|
|
begin
|
|
emit_reg(A_PUSH,S_L,procinfo^.framepointer)
|
|
end
|
|
else if (lexlevel>pprocdef(p^.procdefinition)^.parast^.symtablelevel) then
|
|
begin
|
|
hregister:=getregister32;
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.offset:=procinfo^.framepointer_offset;
|
|
r^.base:=procinfo^.framepointer;
|
|
emit_ref_reg(A_MOV,S_L,r,hregister);
|
|
for i:=(pprocdef(p^.procdefinition)^.parast^.symtablelevel) to lexlevel-1 do
|
|
begin
|
|
new(r);
|
|
reset_reference(r^);
|
|
{we should get the correct frame_pointer_offset at each level
|
|
how can we do this !!! }
|
|
r^.offset:=procinfo^.framepointer_offset;
|
|
r^.base:=hregister;
|
|
emit_ref_reg(A_MOV,S_L,r,hregister);
|
|
end;
|
|
emit_reg(A_PUSH,S_L,hregister);
|
|
ungetregister32(hregister);
|
|
end
|
|
else
|
|
internalerror(25000);
|
|
end;
|
|
|
|
if (po_virtualmethod in p^.procdefinition^.procoptions) and
|
|
not(no_virtual_call) then
|
|
begin
|
|
{ static functions contain the vmt_address in ESI }
|
|
{ also class methods }
|
|
{ Here it is quite tricky because it also depends }
|
|
{ on the methodpointer PM }
|
|
getexplicitregister32(R_ESI);
|
|
if assigned(aktprocsym) then
|
|
begin
|
|
if (((sp_static in aktprocsym^.symoptions) or
|
|
(po_classmethod in aktprocsym^.definition^.procoptions)) and
|
|
((p^.methodpointer=nil) or (p^.methodpointer^.treetype=typen)))
|
|
or
|
|
(po_staticmethod in p^.procdefinition^.procoptions) or
|
|
((p^.procdefinition^.proctypeoption=potype_constructor) and
|
|
{ esi contains the vmt if we call a constructor via a class ref }
|
|
assigned(p^.methodpointer) and
|
|
(p^.methodpointer^.resulttype^.deftype=classrefdef)
|
|
) or
|
|
{ ESI is loaded earlier }
|
|
(po_classmethod in p^.procdefinition^.procoptions) then
|
|
begin
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_ESI;
|
|
end
|
|
else
|
|
begin
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_ESI;
|
|
{ this is one point where we need vmt_offset (PM) }
|
|
r^.offset:= pprocdef(p^.procdefinition)^._class^.vmt_offset;
|
|
{$ifndef noAllocEdi}
|
|
getexplicitregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
emit_ref_reg(A_MOV,S_L,r,R_EDI);
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_EDI;
|
|
end;
|
|
end
|
|
else
|
|
{ aktprocsym should be assigned, also in main program }
|
|
internalerror(12345);
|
|
{
|
|
begin
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_ESI;
|
|
emit_ref_reg(A_MOV,S_L,r,R_EDI);
|
|
new(r);
|
|
reset_reference(r^);
|
|
r^.base:=R_EDI;
|
|
end;
|
|
}
|
|
if pprocdef(p^.procdefinition)^.extnumber=-1 then
|
|
internalerror(44584);
|
|
r^.offset:=pprocdef(p^.procdefinition)^._class^.vmtmethodoffset(pprocdef(p^.procdefinition)^.extnumber);
|
|
if (cs_check_object_ext in aktlocalswitches) then
|
|
begin
|
|
emit_sym(A_PUSH,S_L,
|
|
newasmsymbol(pprocdef(p^.procdefinition)^._class^.vmt_mangledname));
|
|
emit_reg(A_PUSH,S_L,r^.base);
|
|
emitcall('FPC_CHECK_OBJECT_EXT');
|
|
end
|
|
else if (cs_check_range in aktlocalswitches) then
|
|
begin
|
|
emit_reg(A_PUSH,S_L,r^.base);
|
|
emitcall('FPC_CHECK_OBJECT');
|
|
end;
|
|
emit_ref(A_CALL,S_NO,r);
|
|
{$ifndef noAllocEdi}
|
|
ungetregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
end
|
|
else if not inlined then
|
|
begin
|
|
{ We can call interrupts from within the smae code
|
|
by just pushing the flags and CS PM }
|
|
if (po_interrupt in p^.procdefinition^.procoptions) then
|
|
begin
|
|
emit_none(A_PUSHF,S_L);
|
|
emit_reg(A_PUSH,S_L,R_CS);
|
|
end;
|
|
emitcall(pprocdef(p^.procdefinition)^.mangledname);
|
|
end
|
|
else { inlined proc }
|
|
{ inlined code is in inlinecode }
|
|
begin
|
|
{ set poinline again }
|
|
include(p^.procdefinition^.proccalloptions,pocall_inline);
|
|
{ process the inlinecode }
|
|
secondpass(inlinecode);
|
|
{ free the args }
|
|
if pprocdef(p^.procdefinition)^.parast^.datasize>0 then
|
|
ungetpersistanttemp(pprocdef(p^.procdefinition)^.parast^.address_fixup);
|
|
end;
|
|
end
|
|
else
|
|
{ now procedure variable case }
|
|
begin
|
|
secondpass(p^.right);
|
|
if (po_interrupt in p^.procdefinition^.procoptions) then
|
|
begin
|
|
emit_none(A_PUSHF,S_L);
|
|
emit_reg(A_PUSH,S_L,R_CS);
|
|
end;
|
|
{ procedure of object? }
|
|
if (po_methodpointer in p^.procdefinition^.procoptions) then
|
|
begin
|
|
{ method pointer can't be in a register }
|
|
hregister:=R_NO;
|
|
|
|
{ do some hacking if we call a method pointer }
|
|
{ which is a class member }
|
|
{ else ESI is overwritten ! }
|
|
if (p^.right^.location.reference.base=R_ESI) or
|
|
(p^.right^.location.reference.index=R_ESI) then
|
|
begin
|
|
del_reference(p^.right^.location.reference);
|
|
{$ifndef noAllocEdi}
|
|
getexplicitregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
emit_ref_reg(A_MOV,S_L,
|
|
newreference(p^.right^.location.reference),R_EDI);
|
|
hregister:=R_EDI;
|
|
end;
|
|
|
|
{ load self, but not if it's already explicitly pushed }
|
|
if not(po_containsself in p^.procdefinition^.procoptions) then
|
|
begin
|
|
{ load ESI }
|
|
inc(p^.right^.location.reference.offset,4);
|
|
getexplicitregister32(R_ESI);
|
|
emit_ref_reg(A_MOV,S_L,
|
|
newreference(p^.right^.location.reference),R_ESI);
|
|
dec(p^.right^.location.reference.offset,4);
|
|
{ push self pointer }
|
|
emit_reg(A_PUSH,S_L,R_ESI);
|
|
end;
|
|
|
|
if hregister=R_NO then
|
|
emit_ref(A_CALL,S_NO,newreference(p^.right^.location.reference))
|
|
else
|
|
begin
|
|
{$ifndef noAllocEdi}
|
|
ungetregister32(hregister);
|
|
{$else noAllocEdi}
|
|
{ the same code, the previous line is just to }
|
|
{ indicate EDI actually is deallocated if allocated }
|
|
{ above (JM) }
|
|
ungetregister32(hregister);
|
|
{$endif noAllocEdi}
|
|
emit_reg(A_CALL,S_NO,hregister);
|
|
end;
|
|
|
|
del_reference(p^.right^.location.reference);
|
|
end
|
|
else
|
|
begin
|
|
case p^.right^.location.loc of
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
begin
|
|
emit_reg(A_CALL,S_NO,p^.right^.location.register);
|
|
ungetregister32(p^.right^.location.register);
|
|
end
|
|
else
|
|
emit_ref(A_CALL,S_NO,newreference(p^.right^.location.reference));
|
|
del_reference(p^.right^.location.reference);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ this was only for normal functions
|
|
displaced here so we also get
|
|
it to work for procvars PM }
|
|
if (not inlined) and (pocall_clearstack in p^.procdefinition^.proccalloptions) then
|
|
begin
|
|
{ we also add the pop_size which is included in pushedparasize }
|
|
pop_size:=0;
|
|
{ better than an add on all processors }
|
|
if pushedparasize=4 then
|
|
begin
|
|
{$ifndef noAllocEdi}
|
|
getexplicitregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
emit_reg(A_POP,S_L,R_EDI);
|
|
{$ifndef noAllocEdi}
|
|
ungetregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
end
|
|
{ the pentium has two pipes and pop reg is pairable }
|
|
{ but the registers must be different! }
|
|
else if (pushedparasize=8) and
|
|
not(cs_littlesize in aktglobalswitches) and
|
|
(aktoptprocessor=ClassP5) and
|
|
(procinfo^._class=nil) then
|
|
begin
|
|
{$ifndef noAllocEdi}
|
|
getexplicitregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
emit_reg(A_POP,S_L,R_EDI);
|
|
{$ifndef noAllocEdi}
|
|
ungetregister32(R_EDI);
|
|
{$endif noAllocEdi}
|
|
{$ifndef noAllocEdi}
|
|
exprasmlist^.concat(new(pairegalloc,alloc(R_ESI)));
|
|
{$endif noAllocEdi}
|
|
emit_reg(A_POP,S_L,R_ESI);
|
|
{$ifndef noAllocEdi}
|
|
exprasmlist^.concat(new(pairegalloc,alloc(R_ESI)));
|
|
{$endif noAllocEdi}
|
|
end
|
|
else if pushedparasize<>0 then
|
|
emit_const_reg(A_ADD,S_L,pushedparasize,R_ESP);
|
|
end;
|
|
if pop_esp then
|
|
emit_reg(A_POP,S_L,R_ESP);
|
|
dont_call:
|
|
pushedparasize:=oldpushedparasize;
|
|
unused:=unusedregisters;
|
|
usablereg32:=usablecount;
|
|
{$ifdef TEMPREGDEBUG}
|
|
testregisters32;
|
|
{$endif TEMPREGDEBUG}
|
|
|
|
{ a constructor could be a function with boolean result }
|
|
{ if calling constructor called fail we
|
|
must jump directly to quickexitlabel PM
|
|
but only if it is a call of an inherited constructor }
|
|
if (inlined or
|
|
(p^.right=nil)) and
|
|
(p^.procdefinition^.proctypeoption=potype_constructor) and
|
|
assigned(p^.methodpointer) and
|
|
(p^.methodpointer^.treetype=typen) and
|
|
(aktprocsym^.definition^.proctypeoption=potype_constructor) then
|
|
begin
|
|
emitjmp(C_Z,faillabel);
|
|
end;
|
|
{ handle function results }
|
|
{ structured results are easy to handle.... }
|
|
{ needed also when result_no_used !! }
|
|
if (p^.resulttype<>pdef(voiddef)) and ret_in_param(p^.resulttype) then
|
|
begin
|
|
p^.location.loc:=LOC_MEM;
|
|
p^.location.reference.symbol:=nil;
|
|
p^.location.reference:=funcretref;
|
|
end;
|
|
{ we have only to handle the result if it is used, but }
|
|
{ ansi/widestrings must be registered, so we can dispose them }
|
|
if (p^.resulttype<>pdef(voiddef)) and (p^.return_value_used or
|
|
is_ansistring(p^.resulttype) or is_widestring(p^.resulttype)) then
|
|
begin
|
|
{ a contructor could be a function with boolean result }
|
|
if (inlined or
|
|
(p^.right=nil)) and
|
|
(p^.procdefinition^.proctypeoption=potype_constructor) and
|
|
{ quick'n'dirty check if it is a class or an object }
|
|
(p^.resulttype^.deftype=orddef) then
|
|
begin
|
|
{ this fails if popsize > 0 PM }
|
|
p^.location.loc:=LOC_FLAGS;
|
|
p^.location.resflags:=F_NE;
|
|
|
|
|
|
if extended_new then
|
|
begin
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_L,R_EAX)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
p^.location.register:=hregister;
|
|
end;
|
|
end;
|
|
end
|
|
{ structed results are easy to handle.... }
|
|
else if ret_in_param(p^.resulttype) then
|
|
begin
|
|
{p^.location.loc:=LOC_MEM;
|
|
stringdispose(p^.location.reference.symbol);
|
|
p^.location.reference:=funcretref;
|
|
already done above (PM) }
|
|
end
|
|
else
|
|
begin
|
|
if (p^.resulttype^.deftype in [orddef,enumdef]) then
|
|
begin
|
|
p^.location.loc:=LOC_REGISTER;
|
|
case p^.resulttype^.size of
|
|
4 :
|
|
begin
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_L,R_EAX)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
p^.location.register:=hregister;
|
|
end;
|
|
end;
|
|
1 :
|
|
begin
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_B,R_AL)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_B,R_AL,reg32toreg8(hregister));
|
|
p^.location.register:=reg32toreg8(hregister);
|
|
end;
|
|
end;
|
|
2 :
|
|
begin
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_W,R_AX)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_W,R_AX,reg32toreg16(hregister));
|
|
p^.location.register:=reg32toreg16(hregister);
|
|
end;
|
|
end;
|
|
8 :
|
|
begin
|
|
{$ifdef test_dest_loc}
|
|
{$error Don't know what to do here}
|
|
{$endif test_dest_loc}
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
hregister2:=getexplicitregister32(R_EDX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
emit_reg_reg(A_MOV,S_L,R_EDX,hregister2);
|
|
p^.location.registerlow:=hregister;
|
|
p^.location.registerhigh:=hregister2;
|
|
end;
|
|
else internalerror(7);
|
|
end
|
|
|
|
end
|
|
else if (p^.resulttype^.deftype=floatdef) then
|
|
case pfloatdef(p^.resulttype)^.typ of
|
|
f32bit:
|
|
begin
|
|
p^.location.loc:=LOC_REGISTER;
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_L,R_EAX)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
p^.location.register:=hregister;
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
p^.location.loc:=LOC_FPU;
|
|
inc(fpuvaroffset);
|
|
end;
|
|
end
|
|
else if is_ansistring(p^.resulttype) or
|
|
is_widestring(p^.resulttype) then
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
gettempansistringreference(hr);
|
|
decrstringref(p^.resulttype,hr);
|
|
emit_reg_ref(A_MOV,S_L,hregister,
|
|
newreference(hr));
|
|
ungetregister32(hregister);
|
|
p^.location.loc:=LOC_MEM;
|
|
p^.location.reference:=hr;
|
|
end
|
|
else
|
|
begin
|
|
p^.location.loc:=LOC_REGISTER;
|
|
{$ifdef test_dest_loc}
|
|
if dest_loc_known and (dest_loc_tree=p) then
|
|
mov_reg_to_dest(p,S_L,R_EAX)
|
|
else
|
|
{$endif test_dest_loc}
|
|
begin
|
|
hregister:=getexplicitregister32(R_EAX);
|
|
emit_reg_reg(A_MOV,S_L,R_EAX,hregister);
|
|
p^.location.register:=hregister;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ perhaps i/o check ? }
|
|
if iolabel<>nil then
|
|
begin
|
|
emit_sym(A_PUSH,S_L,iolabel);
|
|
emitcall('FPC_IOCHECK');
|
|
end;
|
|
if pop_size>0 then
|
|
emit_const_reg(A_ADD,S_L,pop_size,R_ESP);
|
|
|
|
{ restore registers }
|
|
popusedregisters(pushed);
|
|
|
|
{ at last, restore instance pointer (SELF) }
|
|
if loadesi then
|
|
maybe_loadesi;
|
|
pp:=params;
|
|
while assigned(pp) do
|
|
begin
|
|
if assigned(pp^.left) then
|
|
begin
|
|
if (pp^.left^.location.loc in [LOC_REFERENCE,LOC_MEM]) then
|
|
ungetiftemp(pp^.left^.location.reference);
|
|
{ process also all nodes of an array of const }
|
|
if pp^.left^.treetype=arrayconstructn then
|
|
begin
|
|
if assigned(pp^.left^.left) then
|
|
begin
|
|
hp:=pp^.left;
|
|
while assigned(hp) do
|
|
begin
|
|
if (hp^.left^.location.loc in [LOC_REFERENCE,LOC_MEM]) then
|
|
ungetiftemp(hp^.left^.location.reference);
|
|
hp:=hp^.right;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
pp:=pp^.right;
|
|
end;
|
|
if inlined then
|
|
ungetpersistanttemp(inlinecode^.retoffset);
|
|
if assigned(inlinecode) then
|
|
disposetree(inlinecode);
|
|
disposetree(params);
|
|
|
|
|
|
{ from now on the result can be freed normally }
|
|
if inlined and ret_in_param(p^.resulttype) then
|
|
persistanttemptonormal(funcretref.offset);
|
|
|
|
{ if return value is not used }
|
|
if (not p^.return_value_used) and (p^.resulttype<>pdef(voiddef)) then
|
|
begin
|
|
if p^.location.loc in [LOC_MEM,LOC_REFERENCE] then
|
|
begin
|
|
{ data which must be finalized ? }
|
|
if (p^.resulttype^.needs_inittable) and
|
|
( (p^.resulttype^.deftype<>objectdef) or
|
|
not(pobjectdef(p^.resulttype)^.is_class)) then
|
|
finalize(p^.resulttype,p^.location.reference,ret_in_param(p^.resulttype));
|
|
{ release unused temp }
|
|
ungetiftemp(p^.location.reference)
|
|
end
|
|
else if p^.location.loc=LOC_FPU then
|
|
begin
|
|
{ release FPU stack }
|
|
emit_reg(A_FSTP,S_NO,R_ST0);
|
|
{
|
|
dec(fpuvaroffset);
|
|
do NOT decrement as the increment before
|
|
is not called for unused results PM }
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
SecondProcInlineN
|
|
*****************************************************************************}
|
|
|
|
|
|
procedure secondprocinline(var p : ptree);
|
|
var st : psymtable;
|
|
oldprocsym : pprocsym;
|
|
para_size, i : longint;
|
|
tmpreg: tregister;
|
|
oldprocinfo : pprocinfo;
|
|
oldinlining_procedure,
|
|
nostackframe,make_global : boolean;
|
|
proc_names : tstringcontainer;
|
|
inlineentrycode,inlineexitcode : paasmoutput;
|
|
oldexitlabel,oldexit2label,oldquickexitlabel:Pasmlabel;
|
|
oldunused,oldusableregs : tregisterset;
|
|
oldc_usableregs : longint;
|
|
oldreg_pushes : regvar_longintarray;
|
|
oldis_reg_var : regvar_booleanarray;
|
|
{$ifdef TEMPREGDEBUG}
|
|
oldreg_user : regvar_ptreearray;
|
|
oldreg_releaser : regvar_ptreearray;
|
|
{$endif TEMPREGDEBUG}
|
|
{$ifdef GDB}
|
|
startlabel,endlabel : pasmlabel;
|
|
pp : pchar;
|
|
mangled_length : longint;
|
|
{$endif GDB}
|
|
begin
|
|
{ deallocate the registers used for the current procedure's regvars }
|
|
if assigned(aktprocsym^.definition^.regvarinfo) then
|
|
begin
|
|
with pregvarinfo(aktprocsym^.definition^.regvarinfo)^ do
|
|
for i := 1 to maxvarregs do
|
|
if assigned(regvars[i]) then
|
|
begin
|
|
case regsize(regvars[i]^.reg) of
|
|
S_B: tmpreg := reg8toreg32(regvars[i]^.reg);
|
|
S_W: tmpreg := reg16toreg32(regvars[i]^.reg);
|
|
S_L: tmpreg := regvars[i]^.reg;
|
|
end;
|
|
exprasmlist^.concat(new(pairegalloc,dealloc(tmpreg)));
|
|
end;
|
|
oldunused := unused;
|
|
oldusableregs := usableregs;
|
|
oldc_usableregs := c_usableregs;
|
|
oldreg_pushes := reg_pushes;
|
|
oldis_reg_var := is_reg_var;
|
|
{$ifdef TEMPREGDEBUG}
|
|
oldreg_user := reg_user;
|
|
oldreg_releaser := reg_releaser;
|
|
{$endif TEMPREGDEBUG}
|
|
{ make sure the register allocator knows what the regvars in the }
|
|
{ inlined code block are (JM) }
|
|
resetusableregisters;
|
|
clearregistercount;
|
|
cleartempgen;
|
|
if assigned(p^.inlineprocsym^.definition^.regvarinfo) then
|
|
with pregvarinfo(p^.inlineprocsym^.definition^.regvarinfo)^ do
|
|
for i := 1 to maxvarregs do
|
|
if assigned(regvars[i]) then
|
|
begin
|
|
case regsize(regvars[i]^.reg) of
|
|
S_B: tmpreg := reg8toreg32(regvars[i]^.reg);
|
|
S_W: tmpreg := reg16toreg32(regvars[i]^.reg);
|
|
S_L: tmpreg := regvars[i]^.reg;
|
|
end;
|
|
usableregs:=usableregs-[tmpreg];
|
|
is_reg_var[tmpreg]:=true;
|
|
dec(c_usableregs);
|
|
end;
|
|
end;
|
|
oldinlining_procedure:=inlining_procedure;
|
|
oldexitlabel:=aktexitlabel;
|
|
oldexit2label:=aktexit2label;
|
|
oldquickexitlabel:=quickexitlabel;
|
|
getlabel(aktexitlabel);
|
|
getlabel(aktexit2label);
|
|
oldprocsym:=aktprocsym;
|
|
{ we're inlining a procedure }
|
|
inlining_procedure:=true;
|
|
{ save old procinfo }
|
|
getmem(oldprocinfo,sizeof(tprocinfo));
|
|
move(procinfo^,oldprocinfo^,sizeof(tprocinfo));
|
|
{ set the return value }
|
|
aktprocsym:=p^.inlineprocsym;
|
|
procinfo^.returntype:=aktprocsym^.definition^.rettype;
|
|
procinfo^.return_offset:=p^.retoffset;
|
|
procinfo^.para_offset:=p^.para_offset;
|
|
{ arg space has been filled by the parent secondcall }
|
|
st:=aktprocsym^.definition^.localst;
|
|
{ set it to the same lexical level }
|
|
st^.symtablelevel:=oldprocsym^.definition^.localst^.symtablelevel;
|
|
if st^.datasize>0 then
|
|
begin
|
|
st^.address_fixup:=gettempofsizepersistant(st^.datasize)+st^.datasize;
|
|
{$ifdef extdebug}
|
|
Comment(V_debug,'local symtable is at offset '+tostr(st^.address_fixup));
|
|
exprasmlist^.concat(new(pai_asm_comment,init(strpnew(
|
|
'local symtable is at offset '+tostr(st^.address_fixup)))));
|
|
{$endif extdebug}
|
|
end;
|
|
exprasmlist^.concat(new(Pai_Marker, Init(InlineStart)));
|
|
{$ifdef extdebug}
|
|
exprasmlist^.concat(new(pai_asm_comment,init(strpnew('Start of inlined proc'))));
|
|
{$endif extdebug}
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
getaddrlabel(startlabel);
|
|
getaddrlabel(endlabel);
|
|
emitlab(startlabel);
|
|
p^.inlineprocsym^.definition^.localst^.symtabletype:=inlinelocalsymtable;
|
|
p^.inlineprocsym^.definition^.parast^.symtabletype:=inlineparasymtable;
|
|
|
|
{ Here we must include the para and local symtable info }
|
|
p^.inlineprocsym^.concatstabto(withdebuglist);
|
|
|
|
{ set it back for savety }
|
|
p^.inlineprocsym^.definition^.localst^.symtabletype:=localsymtable;
|
|
p^.inlineprocsym^.definition^.parast^.symtabletype:=parasymtable;
|
|
|
|
mangled_length:=length(oldprocsym^.definition^.mangledname);
|
|
getmem(pp,mangled_length+50);
|
|
strpcopy(pp,'192,0,0,'+startlabel^.name);
|
|
if (target_os.use_function_relative_addresses) then
|
|
begin
|
|
strpcopy(strend(pp),'-');
|
|
strpcopy(strend(pp),oldprocsym^.definition^.mangledname);
|
|
end;
|
|
withdebuglist^.concat(new(pai_stabn,init(strnew(pp))));
|
|
end;
|
|
{$endif GDB}
|
|
{ takes care of local data initialization }
|
|
inlineentrycode:=new(paasmoutput,init);
|
|
inlineexitcode:=new(paasmoutput,init);
|
|
proc_names.init;
|
|
para_size:=p^.para_size;
|
|
make_global:=false; { to avoid warning }
|
|
genentrycode(inlineentrycode,proc_names,make_global,0,para_size,nostackframe,true);
|
|
exprasmlist^.concatlist(inlineentrycode);
|
|
secondpass(p^.inlinetree);
|
|
genexitcode(inlineexitcode,0,false,true);
|
|
exprasmlist^.concatlist(inlineexitcode);
|
|
|
|
dispose(inlineentrycode,done);
|
|
dispose(inlineexitcode,done);
|
|
{$ifdef extdebug}
|
|
exprasmlist^.concat(new(pai_asm_comment,init(strpnew('End of inlined proc'))));
|
|
{$endif extdebug}
|
|
exprasmlist^.concat(new(Pai_Marker, Init(InlineEnd)));
|
|
|
|
{we can free the local data now, reset also the fixup address }
|
|
if st^.datasize>0 then
|
|
begin
|
|
ungetpersistanttemp(st^.address_fixup-st^.datasize);
|
|
st^.address_fixup:=0;
|
|
end;
|
|
{ restore procinfo }
|
|
move(oldprocinfo^,procinfo^,sizeof(tprocinfo));
|
|
freemem(oldprocinfo,sizeof(tprocinfo));
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
emitlab(endlabel);
|
|
strpcopy(pp,'224,0,0,'+endlabel^.name);
|
|
if (target_os.use_function_relative_addresses) then
|
|
begin
|
|
strpcopy(strend(pp),'-');
|
|
strpcopy(strend(pp),oldprocsym^.definition^.mangledname);
|
|
end;
|
|
withdebuglist^.concat(new(pai_stabn,init(strnew(pp))));
|
|
freemem(pp,mangled_length+50);
|
|
end;
|
|
{$endif GDB}
|
|
{ restore }
|
|
aktprocsym:=oldprocsym;
|
|
aktexitlabel:=oldexitlabel;
|
|
aktexit2label:=oldexit2label;
|
|
quickexitlabel:=oldquickexitlabel;
|
|
inlining_procedure:=oldinlining_procedure;
|
|
|
|
{ reallocate the registers used for the current procedure's regvars, }
|
|
{ since they may have been used and then deallocated in the inlined }
|
|
{ procedure (JM) }
|
|
if assigned(aktprocsym^.definition^.regvarinfo) then
|
|
begin
|
|
with pregvarinfo(aktprocsym^.definition^.regvarinfo)^ do
|
|
for i := 1 to maxvarregs do
|
|
if assigned(regvars[i]) then
|
|
begin
|
|
case regsize(regvars[i]^.reg) of
|
|
S_B: tmpreg := reg8toreg32(regvars[i]^.reg);
|
|
S_W: tmpreg := reg16toreg32(regvars[i]^.reg);
|
|
S_L: tmpreg := regvars[i]^.reg;
|
|
end;
|
|
exprasmlist^.concat(new(pairegalloc,alloc(tmpreg)));
|
|
end;
|
|
oldunused := oldunused;
|
|
oldusableregs := oldusableregs;
|
|
oldc_usableregs := oldc_usableregs;
|
|
oldreg_pushes := oldreg_pushes;
|
|
oldis_reg_var := oldis_reg_var;
|
|
{$ifdef TEMPREGDEBUG}
|
|
oldreg_user := oldreg_user;
|
|
oldreg_releaser := oldreg_releaser;
|
|
{$endif TEMPREGDEBUG}
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.7 2000-08-03 14:27:04 jonas
|
|
* save/reset/restore regvar info around inlined code
|
|
|
|
Revision 1.5 2000/07/27 13:03:35 jonas
|
|
* release alignopts
|
|
|
|
Revision 1.4 2000/07/21 15:14:01 jonas
|
|
+ added is_addr field for labels, if they are only used for getting the address
|
|
(e.g. for io checks) and corresponding getaddrlabel() procedure
|
|
|
|
Revision 1.3 2000/07/13 12:08:24 michael
|
|
+ patched to 1.1.0 with former 1.09patch from peter
|
|
|
|
Revision 1.2 2000/07/13 11:32:32 michael
|
|
+ removed logs
|
|
|
|
}
|