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91 lines
2.6 KiB
ObjectPascal
91 lines
2.6 KiB
ObjectPascal
{
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Copyright (c) 2008 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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globtype,cutils,
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procinfo,cpuinfo,psub;
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type
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tcpuprocinfo = class(tcgprocinfo)
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// procedure handle_body_start;override;
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// procedure after_pass1;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 postprocess_code;override;
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end;
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implementation
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uses
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globals,systems,verbose,
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cpubase,
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aasmtai,aasmdata,
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tgobj,
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symconst,symsym,paramgr,
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cgbase,
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cgobj,
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aasmcpu;
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procedure tcpuprocinfo.set_first_temp_offset;
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begin
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if tg.direction = -1 then
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tg.setfirsttemp(-1)
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else if not (po_nostackframe in procdef.procoptions) then
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tg.setfirsttemp(maxpushedparasize+1)
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else
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tg.setfirsttemp(maxpushedparasize);
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end;
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function tcpuprocinfo.calc_stackframe_size:longint;
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begin
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if tg.lasttemp=2 then
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{ correct that lasttemp is 2 in case of an empty stack due to the post-decrement pushing and an additional correction
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in tgobj.setfirsttemp.
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}
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result:=maxpushedparasize
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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 tcpuprocinfo.postprocess_code;
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begin
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{ because of the limited branch distance of cond. branches, they must be replaced
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sometimes by normal jmps and an inverse branch }
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if not(finalizeavrcode(aktproccode)) then
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message1(cg_w_cannot_compile_subroutine,procdef.fullprocname(false));
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end;
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begin
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cprocinfo:=tcpuprocinfo;
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end.
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