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123 lines
3.5 KiB
ObjectPascal
123 lines
3.5 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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cutils,aasmdata,
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globtype, cgutils, cgbase,
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procinfo, cpuinfo, psub;
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type
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tloongarch64procinfo = class(tcgprocinfo)
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stackframesize,
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floatregstart : aint;
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stackpaddingreg: TSuperRegister;
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needs_frame_pointer: boolean;
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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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end;
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implementation
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uses
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globals, systems,
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cpubase,
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aasmtai,
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tgobj,cgobj,
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symconst, symsym, paramgr, symutil, symtable,
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verbose,
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aasmcpu;
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constructor tloongarch64procinfo.create(aparent: tprocinfo);
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begin
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inherited create(aparent);
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maxpushedparasize := 0;
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{ GCC option -fomit-frame-pointer is default. }
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framepointer:=NR_STACK_POINTER_REG;
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end;
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procedure tloongarch64procinfo.set_first_temp_offset;
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begin
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{ TODO framepointer:=NR_STACK_POINTER_REG; Need get backtrace updated. }
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{ TODO Profile }
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if (po_nostackframe in procdef.procoptions) then
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begin
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tg.setfirsttemp(align(maxpushedparasize,
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max(current_settings.alignment.localalignmin,8)));
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end
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else
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begin
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tg.setfirsttemp(align(maxpushedparasize,
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max(current_settings.alignment.localalignmin,8)));
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end;
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end;
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function tloongarch64procinfo.calc_stackframe_size: longint;
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var
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firstfloatreg,lastfloatreg,
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r : byte;
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floatsavesize : aword;
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regs: tcpuregisterset;
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begin
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maxpushedparasize:=align(maxpushedparasize,
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max(current_settings.alignment.localalignmin,8));
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floatsavesize:=0;
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case current_settings.fputype of
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fpu_fd:
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begin
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floatsavesize:=0;
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regs:=cg.rg[R_FPUREGISTER].used_in_proc-paramanager.get_volatile_registers_fpu(pocall_stdcall);
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for r:=RS_F0 to RS_F31 do
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if r in regs then
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inc(floatsavesize,8);
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end;
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else
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;
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end;
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result:=align(tg.direction*tg.lasttemp,
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max(current_settings.alignment.localalignmin,8))
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+maxpushedparasize+aint(floatsavesize);
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if tg.direction=1 then
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floatregstart:=result-aint(floatsavesize)
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else
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floatregstart:=-result+maxpushedparasize;
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end;
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begin
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cprocinfo := tloongarch64procinfo;
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end.
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