mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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eb066d3b32
before g_stackframe_entry (still have to fix macos) * compilation fixes (cycle doesn't work yet though)
198 lines
6.8 KiB
ObjectPascal
198 lines
6.8 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 2002 by Florian Klaempfl
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Implements the PowerPC specific part of call nodes
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published bymethodpointer
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit nppccal;
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{$i fpcdefs.inc}
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interface
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uses
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symdef,node,ncal,ncgcal;
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type
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tppccallnode = class(tcgcallnode)
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function pass_1 : tnode;override;
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procedure push_framepointer;override;
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end;
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implementation
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uses
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globtype,systems,
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cutils,verbose,globals,
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symconst,symbase,symsym,symtable,defutil,paramgr,
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{$ifdef GDB}
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{$ifdef delphi}
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sysutils,
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{$else}
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strings,
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{$endif}
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gdb,
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{$endif GDB}
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cginfo,cgbase,pass_2,
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cpuinfo,cpubase,aasmbase,aasmtai,aasmcpu,
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nmem,nld,ncnv,
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ncgutil,cgobj,tgobj,regvars,rgobj,rgcpu,cg64f32,cgcpu,cpupi;
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function tppccallnode.pass_1 : tnode;
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begin
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result:=inherited pass_1;
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if assigned(result) then
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exit;
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if procdefinition is tprocdef then
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begin
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if tprocdef(procdefinition).parast.datasize>tppcprocinfo(current_procinfo).maxpushedparasize then
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tppcprocinfo(current_procinfo).maxpushedparasize:=tprocdef(procdefinition).parast.datasize;
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end
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else
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begin
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{!!!!}
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end;
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end;
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procedure tppccallnode.push_framepointer;
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var
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href : treference;
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hregister1,hregister2 : tregister;
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i : longint;
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begin
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if current_procdef.parast.symtablelevel=(tprocdef(procdefinition).parast.symtablelevel) then
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begin
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{ pass the same framepointer as the current procedure got }
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hregister2.enum:=R_INTREGISTER;
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hregister2.number:=NR_R11;
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reference_reset_base(href,current_procinfo.framepointer,current_procinfo.framepointer_offset);
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,hregister2);
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{ it must be adjusted! }
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end
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{ this is only true if the difference is one !!
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but it cannot be more !! }
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else if (current_procdef.parast.symtablelevel=(tprocdef(procdefinition).parast.symtablelevel)-1) then
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begin
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{ pass the same framepointer as the current procedure got }
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hregister1.enum:=R_INTREGISTER;
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hregister1.number:=NR_R1;
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hregister2.enum:=R_INTREGISTER;
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hregister2.number:=NR_R11;
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cg.a_load_reg_reg(exprasmlist,OS_32,OS_32,hregister1,hregister2);
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end
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else if (current_procdef.parast.symtablelevel>(tprocdef(procdefinition).parast.symtablelevel)) then
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begin
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hregister1:=rg.getregisterint(exprasmlist,OS_ADDR);
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reference_reset_base(href,current_procinfo.framepointer,current_procinfo.framepointer_offset);
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,hregister1);
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{ the previous frame pointer is always saved at }
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{ previous_framepointer+12 (in the link area) }
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reference_reset_base(href,hregister1,12);
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i:=current_procdef.parast.symtablelevel-1;
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while (i>tprocdef(procdefinition).parast.symtablelevel) do
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begin
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cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,hregister1);
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dec(i);
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end;
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hregister2.enum:=R_INTREGISTER;
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hregister2.number:=NR_R11;
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cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,hregister1,hregister2);
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rg.ungetregisterint(exprasmlist,hregister1);
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end
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else
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internalerror(2002081303);
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end;
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begin
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ccallnode:=tppccallnode;
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end.
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{
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$Log$
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Revision 1.17 2003-06-04 11:58:58 jonas
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* calculate localsize also in g_return_from_proc since it's now called
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before g_stackframe_entry (still have to fix macos)
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* compilation fixes (cycle doesn't work yet though)
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Revision 1.16 2003/05/25 14:32:42 jonas
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* fixed register numbering bug
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Revision 1.15 2003/05/24 11:47:27 jonas
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* fixed framepointer storage: it's now always stored at r1+12, which is
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a place in the link area reserved for compiler use.
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Revision 1.14 2003/05/23 18:51:26 jonas
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* fixed support for nested procedures and more parameters than those
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which fit in registers (untested/probably not working: calling a
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nested procedure from a deeper nested procedure)
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Revision 1.13 2003/05/18 15:15:59 florian
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+ added abi field to tsysteminfo
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Revision 1.12 2003/05/16 23:15:51 jonas
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* workaround for nested procedures until Peter fixes it properly :)
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Revision 1.11 2003/05/16 20:00:39 jonas
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* powerpc nested procedure fixes, should work completely now if all
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local variables of the parent procedure are declared before the
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nested procedures are declared
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Revision 1.10 2003/04/27 11:21:36 peter
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* aktprocdef renamed to current_procdef
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* procinfo renamed to current_procinfo
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* procinfo will now be stored in current_module so it can be
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cleaned up properly
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* gen_main_procsym changed to create_main_proc and release_main_proc
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to also generate a tprocinfo structure
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* fixed unit implicit initfinal
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Revision 1.9 2003/04/27 10:41:47 florian
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* fixed nested procedures to get them working as before
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Revision 1.8 2003/04/27 07:48:05 peter
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* updated for removed lexlevel
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Revision 1.7 2003/04/24 11:24:00 florian
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* fixed several issues with nested procedures
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Revision 1.6 2003/04/23 12:35:35 florian
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* fixed several issues with powerpc
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+ applied a patch from Jonas for nested function calls (PowerPC only)
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* ...
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Revision 1.5 2003/04/04 15:38:56 peter
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* moved generic code from n386cal to ncgcal, i386 now also
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uses the generic ncgcal
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Revision 1.4 2002/12/05 14:28:12 florian
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* some variant <-> dyn. array stuff
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Revision 1.3 2002/11/25 17:43:28 peter
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* splitted defbase in defutil,symutil,defcmp
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* merged isconvertable and is_equal into compare_defs(_ext)
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* made operator search faster by walking the list only once
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Revision 1.2 2002/08/17 09:23:49 florian
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* first part of procinfo rewrite
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Revision 1.1 2002/08/13 21:40:59 florian
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* more fixes for ppc calling conventions
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}
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