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116 lines
3.3 KiB
ObjectPascal
116 lines
3.3 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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{$i fpcdefs.inc}
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interface
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uses
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symdef,node,ncal,ncgcal;
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type
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tppccallnode = class(tcgcallnode)
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procedure extra_call_code;override;
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procedure do_syscall;override;
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end;
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implementation
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uses
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globtype,systems,
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cutils,verbose,globals,
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symconst,symbase,symsym,symtable,defutil,paramgr,
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{$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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cgbase,pass_2,
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cpuinfo,cpubase,aasmbase,aasmtai,aasmcpu,
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nmem,nld,ncnv,
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ncgutil,cgutils,cgobj,tgobj,regvars,rgobj,rgcpu,
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cg64f32,cgcpu,cpupi,procinfo;
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procedure tppccallnode.extra_call_code;
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begin
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if assigned(varargsparas) then
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begin
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if va_uses_float_reg in varargsparas.varargsinfo then
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exprasmlist.concat(taicpu.op_const_const_const(A_CREQV,6,6,6))
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else
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exprasmlist.concat(taicpu.op_const_const_const(A_CRXOR,6,6,6));
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end;
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end;
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procedure tppccallnode.do_syscall;
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var
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tmpref: treference;
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begin
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case target_info.system of
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system_powerpc_morphos:
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begin
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cg.getexplicitregister(exprasmlist,NR_R0);
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cg.getexplicitregister(exprasmlist,NR_R3);
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{ store call offset into R3 }
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exprasmlist.concat(taicpu.op_reg_const(A_LI,NR_R3,-tprocdef(procdefinition).extnumber));
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{ prepare LR, and call function }
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reference_reset_base(tmpref,NR_R2,100); { 100 ($64) is EmulDirectCallOS offset }
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exprasmlist.concat(taicpu.op_reg_ref(A_LWZ,NR_R0,tmpref));
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exprasmlist.concat(taicpu.op_reg(A_MTLR,NR_R0));
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exprasmlist.concat(taicpu.op_none(A_BLRL));
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cg.ungetregister(exprasmlist,NR_R0);
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cg.ungetregister(exprasmlist,NR_R3);
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end;
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else
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internalerror(2004042901);
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end;
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end;
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begin
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ccallnode:=tppccallnode;
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end.
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{
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$Log$
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Revision 1.27 2004-06-20 08:55:32 florian
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* logs truncated
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Revision 1.26 2004/04/29 22:18:37 karoly
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* removed some unneeded parts of do_syscall
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Revision 1.25 2004/04/29 14:36:42 karoly
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* little cleanup of the previous commit
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Revision 1.24 2004/04/29 14:01:23 karoly
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+ first implementation of PowerPC/MorphOS do_syscall
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}
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