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95 lines
2.7 KiB
ObjectPascal
95 lines
2.7 KiB
ObjectPascal
{
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Copyright (c) 2002 by Florian Klaempfl
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This unit contains the CPU specific part of tprocinfo
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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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{ This unit contains the CPU specific part of tprocinfo. }
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unit cpupi;
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{$i fpcdefs.inc}
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interface
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uses
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psub,procinfo;
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type
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ti386procinfo = class(tcgprocinfo)
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constructor create(aparent:tprocinfo);override;
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procedure set_first_temp_offset;override;
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function calc_stackframe_size:longint;override;
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procedure generate_parameter_info;override;
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end;
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implementation
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uses
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cutils,
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systems,globals,
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tgobj,
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cpubase,
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cgutils,
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symconst;
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constructor ti386procinfo.create(aparent:tprocinfo);
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begin
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inherited create(aparent);
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got:=NR_EBX;
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end;
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procedure ti386procinfo.set_first_temp_offset;
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begin
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if use_fixed_stack then
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begin
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if not(po_assembler in procdef.procoptions) and
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(tg.direction > 0) then
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tg.setfirsttemp(tg.direction*maxpushedparasize);
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end;
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end;
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function ti386procinfo.calc_stackframe_size:longint;
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begin
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{ align to 4 bytes at least
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otherwise all those subl $2,%esp are meaningless PM }
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if (target_info.system <> system_i386_darwin) then
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result:=Align(tg.direction*tg.lasttemp,min(current_settings.alignment.localalignmin,4))
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else
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result:=tg.direction*tg.lasttemp+maxpushedparasize;
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end;
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procedure ti386procinfo.generate_parameter_info;
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begin
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inherited generate_parameter_info;
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{ Para_stack_size is only used to determine how many bytes to remove }
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{ from the stack at the end of the procedure (in the "ret $xx"). }
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{ If the stack is fixed, nothing has to be removed by the callee }
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if use_fixed_stack then
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para_stack_size := 0;
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end;
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begin
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cprocinfo:=ti386procinfo;
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end.
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