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+ added interface support for the arm
* added FPC_REQUIRES_PROPER_ALIGNMENT define for targets which require proper alignment
This commit is contained in:
florian
parent
b1e636e4f9
commit
f3c4d487e7
@ -35,6 +35,7 @@ unit cpunode;
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the processor specific nodes must be included
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after the generic one (FK)
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}
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narmobj,
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narmadd,
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narmcal,
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narmmat,
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@ -45,7 +46,11 @@ unit cpunode;
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end.
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{
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$Log$
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Revision 1.7 2003-08-28 00:05:29 florian
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Revision 1.8 2004-03-21 22:40:15 florian
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+ added interface support for the arm
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* added FPC_REQUIRES_PROPER_ALIGNMENT define for targets which require proper alignment
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Revision 1.7 2003/08/28 00:05:29 florian
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* today's arm patches
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Revision 1.6 2003/08/27 00:27:56 florian
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171
compiler/arm/narmobj.pas
Normal file
171
compiler/arm/narmobj.pas
Normal file
@ -0,0 +1,171 @@
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{
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$Id$
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Copyright (c) 1998-2002 by Kovacs Attila Zoltan
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Generate arm assembly wrapper code interface implementor objects
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit narmobj;
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{$i fpcdefs.inc}
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interface
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implementation
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uses
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systems,
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verbose,globals,globtype,
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aasmbase,aasmtai,aasmcpu,
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symconst,symdef,
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fmodule,
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nobj,
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cpuinfo,cpubase,
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cgutils,cgobj;
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type
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tarmclassheader=class(tclassheader)
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protected
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procedure cgintfwrapper(asmlist: TAAsmoutput; procdef: tprocdef; const labelname: string; ioffset: longint);override;
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end;
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{
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possible calling conventions:
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default stdcall cdecl pascal register saveregisters
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default(0): OK OK OK(1) OK OK OK
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virtual(2): OK OK OK(3) OK OK OK(4)
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(0):
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set self parameter to correct value
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jmp mangledname
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(1): The code is the following
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set self parameter to correct value
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call mangledname
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set self parameter to interface value
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(2): The wrapper code use %eax to reach the virtual method address
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set self to correct value
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move self,%eax
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mov 0(%eax),%eax ; load vmt
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jmp vmtoffs(%eax) ; method offs
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(3): The wrapper code use %eax to reach the virtual method address
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set self to correct value
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move self,%eax
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mov 0(%eax),%eax ; load vmt
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jmp vmtoffs(%eax) ; method offs
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set self parameter to interface value
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(4): Virtual use eax to reach the method address so the following code be generated:
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set self to correct value
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push %ebx ; allocate space for function address
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push %eax
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mov self,%eax
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mov 0(%eax),%eax ; load vmt
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mov vmtoffs(%eax),eax ; method offs
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mov %eax,4(%esp)
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pop %eax
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ret 0; jmp the address
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}
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procedure tarmclassheader.cgintfwrapper(asmlist: TAAsmoutput; procdef: tprocdef; const labelname: string; ioffset: longint);
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procedure loadvmttor12;
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var
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href : treference;
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begin
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reference_reset_base(href,NR_R0,0);
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,NR_R12);
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end;
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procedure op_onr12methodaddr;
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var
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href : treference;
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begin
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if (procdef.extnumber=$ffff) then
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Internalerror(200006139);
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{ call/jmp vmtoffs(%eax) ; method offs }
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reference_reset_base(href,NR_R12,procdef._class.vmtmethodoffset(procdef.extnumber));
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,NR_R12);
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{ using a_call here causes an internalerror because pi_do_call
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isn't set properly }
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exprasmlist.concat(taicpu.op_reg_reg(A_MOV,NR_R14,NR_PC));
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exprasmlist.concat(taicpu.op_reg_reg(A_MOV,NR_PC,NR_R12));
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end;
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var
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oldexprasmlist: TAAsmoutput;
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lab : tasmsymbol;
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make_global : boolean;
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href : treference;
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begin
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if procdef.proctypeoption<>potype_none then
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Internalerror(200006137);
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if not assigned(procdef._class) or
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(procdef.procoptions*[po_classmethod, po_staticmethod,
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po_methodpointer, po_interrupt, po_iocheck]<>[]) then
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Internalerror(200006138);
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if procdef.owner.symtabletype<>objectsymtable then
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Internalerror(200109191);
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oldexprasmlist:=exprasmlist;
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exprasmlist:=asmlist;
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make_global:=false;
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if (not current_module.is_unit) or
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(cs_create_smart in aktmoduleswitches) or
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(procdef.owner.defowner.owner.symtabletype=globalsymtable) then
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make_global:=true;
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if make_global then
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exprasmList.concat(Tai_symbol.Createname_global(labelname,AT_FUNCTION,0))
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else
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exprasmList.concat(Tai_symbol.Createname(labelname,AT_FUNCTION,0));
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{ set param1 interface to self }
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adjustselfvalue(procdef,ioffset);
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{ case 4 }
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if po_virtualmethod in procdef.procoptions then
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begin
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loadvmttor12;
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op_onr12methodaddr;
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end
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{ case 0 }
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else
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asmlist.concat(taicpu.op_sym(A_B,objectlibrary.newasmsymbol(procdef.mangledname,AB_EXTERNAL,AT_FUNCTION)));
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exprasmList.concat(Tai_symbol_end.Createname(labelname));
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exprasmlist:=oldexprasmlist;
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end;
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initialization
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cclassheader:=tarmclassheader;
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end.
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{
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$Log$
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Revision 1.1 2004-03-21 22:40:15 florian
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+ added interface support for the arm
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* added FPC_REQUIRES_PROPER_ALIGNMENT define for targets which require proper alignment
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}
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@ -1684,6 +1684,10 @@ begin
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def_symbol('HASVARIANT');
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def_symbol('FPC_MTFSB0_CORRECTED');
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{$endif powerpc}
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{$ifdef arm}
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def_symbol('HASINTF');
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def_symbol('HASVARIANT');
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{$endif arm}
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def_symbol('INTERNSETLENGTH');
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def_symbol('INTERNLENGTH');
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def_symbol('INTERNCOPY');
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@ -1769,6 +1773,7 @@ begin
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def_symbol('FPC_HAS_TYPE_DOUBLE');
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def_symbol('FPC_HAS_TYPE_SINGLE');
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def_symbol('FPC_CURRENCY_IS_INT64');
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def_symbol('FPC_REQUIRES_PROPER_ALIGNMENT');
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{$endif arm}
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{ get default messagefile }
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@ -2029,7 +2034,11 @@ finalization
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end.
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{
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$Log$
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Revision 1.128 2004-03-20 22:57:07 florian
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Revision 1.129 2004-03-21 22:40:15 florian
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+ added interface support for the arm
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* added FPC_REQUIRES_PROPER_ALIGNMENT define for targets which require proper alignment
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Revision 1.128 2004/03/20 22:57:07 florian
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+ cross compilation dir search added
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Revision 1.127 2004/03/10 22:52:57 peter
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