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91 lines
2.4 KiB
ObjectPascal
91 lines
2.4 KiB
ObjectPascal
{
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Copyright (c) 2002-2009 by Florian Klaempfl and David Zhang
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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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unit cpupi;
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{$i fpcdefs.inc}
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interface
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uses
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cutils,
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globtype,
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procinfo,cpuinfo,
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psub;
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type
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{ TMIPSProcInfo }
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TMIPSProcInfo=class(tcgprocinfo)
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intregstart,
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floatregstart : aint;
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intregssave,
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floatregssave : byte;
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constructor create(aparent:tprocinfo);override;
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function calc_stackframe_size:longint;override;
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procedure set_first_temp_offset;override;
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end;
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implementation
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uses
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systems,globals,
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cpubase,cgbase,cgobj,
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tgobj,paramgr,symconst;
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constructor TMIPSProcInfo.create(aparent: tprocinfo);
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begin
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inherited create(aparent);
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floatregssave:=11;
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intregssave:=10;
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end;
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procedure TMIPSProcInfo.set_first_temp_offset;
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begin
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{ We allocate enough space to save all registers because we can't determine
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the necessary space because the used registers aren't known before
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secondpass is run. }
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if tg.direction = -1 then
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tg.setfirsttemp(0)
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else
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tg.setfirsttemp(maxpushedparasize+floatregssave*sizeof(aint)+intregssave*sizeof(aint));
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end;
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function TMIPSProcInfo.calc_stackframe_size:longint;
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var
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r : byte;
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regs: tcpuregisterset;
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begin
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result:=maxpushedparasize;
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floatregstart:=result;
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inc(result,floatregssave*4);
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intregstart:=result;
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result:=Align(tg.lasttemp,max(current_settings.alignment.localalignmin,8));
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end;
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begin
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cprocinfo:=TMIPSProcInfo;
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end.
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