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65c3ba277c
ungetcpuregister * renamed (get|unget)explicitregister(s) to ..cpuregister * removed location-release/reference_release
262 lines
9.4 KiB
ObjectPascal
262 lines
9.4 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2002 by Florian Klaempfl
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Generate 680x0 assembler for math 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 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 n68kmat;
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{$i fpcdefs.inc}
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interface
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uses
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node,nmat,ncgmat,cpubase,cgbase;
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type
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tm68knotnode = class(tnotnode)
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procedure pass_2;override;
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end;
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tm68kmoddivnode = class(tcgmoddivnode)
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procedure emit_div_reg_reg(signed: boolean;denum,num : tregister);override;
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procedure emit_mod_reg_reg(signed: boolean;denum,num : tregister);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,symdef,aasmbase,aasmtai,aasmcpu,
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pass_1,pass_2,
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ncon,
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cpuinfo,paramgr,defutil,
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tgobj,ncgutil,cgobj,rgobj,rgcpu,cgcpu,cg64f32;
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{*****************************************************************************
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TM68KNOTNODE
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*****************************************************************************}
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procedure tm68knotnode.pass_2;
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var
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hl : tasmlabel;
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opsize : tcgsize;
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begin
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opsize:=def_cgsize(resulttype.def);
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if is_boolean(resulttype.def) then
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begin
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{ the second pass could change the location of left }
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{ if it is a register variable, so we've to do }
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{ this before the case statement }
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if left.location.loc<>LOC_JUMP then
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secondpass(left);
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case left.location.loc of
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LOC_JUMP :
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begin
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location_reset(location,LOC_JUMP,OS_NO);
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hl:=truelabel;
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truelabel:=falselabel;
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falselabel:=hl;
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secondpass(left);
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maketojumpbool(exprasmlist,left,lr_load_regvars);
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hl:=truelabel;
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truelabel:=falselabel;
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falselabel:=hl;
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end;
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LOC_FLAGS :
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begin
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location_copy(location,left.location);
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location_release(exprasmlist,left.location);
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inverse_flags(location.resflags);
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end;
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LOC_CONSTANT,
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LOC_REGISTER,
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LOC_CREGISTER,
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LOC_REFERENCE,
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LOC_CREFERENCE :
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begin
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location_force_reg(exprasmlist,left.location,def_cgsize(resulttype.def),true);
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exprasmlist.concat(taicpu.op_reg(A_TST,tcgsize2opsize[opsize],left.location.register));
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location_release(exprasmlist,left.location);
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location_reset(location,LOC_FLAGS,OS_NO);
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location.resflags:=F_E;
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end;
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else
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internalerror(200203224);
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end;
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end
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else if is_64bitint(left.resulttype.def) then
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begin
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secondpass(left);
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location_copy(location,left.location);
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location_force_reg(exprasmlist,location,OS_64,false);
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cg64.a_op64_loc_reg(exprasmlist,OP_NOT,location,
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joinreg64(location.registerlow,location.registerhigh));
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end
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else
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begin
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secondpass(left);
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location_force_reg(exprasmlist,left.location,def_cgsize(left.resulttype.def),false);
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location_copy(location,left.location);
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if location.loc=LOC_CREGISTER then
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location.register := cg.getintregister(exprasmlist,opsize);
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{ perform the NOT operation }
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cg.a_op_reg_reg(exprasmlist,OP_NOT,opsize,location.register,left.location.register);
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end;
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end;
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{*****************************************************************************
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TM68KMODDIVNODE
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*****************************************************************************}
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procedure tm68kmoddivnode.emit_div_reg_reg(signed: boolean;denum,num : tregister);
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var
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continuelabel : tasmlabel;
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reg_d0,reg_d1 : tregister;
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begin
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{ no RTL call, so inline a zero denominator verification }
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if aktoptprocessor <> MC68000 then
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begin
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{ verify if denominator is zero }
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objectlibrary.getlabel(continuelabel);
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{ compare against zero, if not zero continue }
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cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_NE,0,denum,continuelabel);
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cg.a_param_const(exprasmlist, OS_S32,200,paramanager.getintparaloc(pocall_default,1));
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cg.a_call_name(exprasmlist,'FPC_HANDLEERROR');
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cg.a_label(exprasmlist, continuelabel);
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if signed then
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exprasmlist.concat(taicpu.op_reg_reg(A_DIVS,S_L,denum,num))
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else
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exprasmlist.concat(taicpu.op_reg_reg(A_DIVU,S_L,denum,num));
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{ result should be in denuminator }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,denum);
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end
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else
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begin
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{ On MC68000/68010 mw must pass through RTL routines }
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reg_d0:=NR_D0;
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cg.getcpuregister(exprasmlist,NR_D0);
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reg_d1:=NR_D1;
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cg.getcpuregister(exprasmlist,NR_D1);
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{ put numerator in d0 }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,reg_d0);
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{ put denum in D1 }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,denum,reg_d1);
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if signed then
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cg.a_call_name(exprasmlist,'FPC_DIV_LONGINT')
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else
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cg.a_call_name(exprasmlist,'FPC_DIV_CARDINAL');
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,reg_d0,denum);
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cg.ungetregister(exprasmlist,reg_d0);
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cg.ungetregister(exprasmlist,reg_d1);
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end;
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end;
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procedure tm68kmoddivnode.emit_mod_reg_reg(signed: boolean;denum,num : tregister);
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var tmpreg : tregister;
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continuelabel : tasmlabel;
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signlabel : tasmlabel;
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reg_d0,reg_d1 : tregister;
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begin
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{ no RTL call, so inline a zero denominator verification }
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if aktoptprocessor <> MC68000 then
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begin
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{ verify if denominator is zero }
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objectlibrary.getlabel(continuelabel);
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{ compare against zero, if not zero continue }
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cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_NE,0,denum,continuelabel);
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cg.a_param_const(exprasmlist, OS_S32,200,paramanager.getintparaloc(pocall_default,1));
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cg.a_call_name(exprasmlist,'FPC_HANDLEERROR');
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cg.a_label(exprasmlist, continuelabel);
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tmpreg:=cg.getintregister(exprasmlist,OS_INT);
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{ we have to prepare the high register with the }
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{ correct sign. i.e we clear it, check if the low dword reg }
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{ which will participate in the division is signed, if so we}
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{ we extend the sign to the high doword register by inverting }
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{ all the bits. }
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exprasmlist.concat(taicpu.op_reg(A_CLR,S_L,tmpreg));
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objectlibrary.getlabel(signlabel);
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exprasmlist.concat(taicpu.op_reg(A_TST,S_L,tmpreg));
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cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_A,0,tmpreg,signlabel);
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{ its a negative value, therefore change sign }
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cg.a_label(exprasmlist,signlabel);
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{ tmpreg:num / denum }
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if signed then
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exprasmlist.concat(taicpu.op_reg_reg_reg(A_DIVSL,S_L,denum,tmpreg,num))
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else
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exprasmlist.concat(taicpu.op_reg_reg_reg(A_DIVUL,S_L,denum,tmpreg,num));
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{ remainder in tmpreg }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,tmpreg,denum);
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cg.ungetregister(exprasmlist,tmpreg);
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end
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else
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begin
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{ On MC68000/68010 mw must pass through RTL routines }
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Reg_d0:=NR_D0;
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cg.getcpuregister(exprasmlist,NR_D0);
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Reg_d1:=NR_D1;
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cg.getcpuregister(exprasmlist,NR_D1);
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{ put numerator in d0 }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,Reg_D0);
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{ put denum in D1 }
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,denum,Reg_D1);
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if signed then
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cg.a_call_name(exprasmlist,'FPC_MOD_LONGINT')
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else
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cg.a_call_name(exprasmlist,'FPC_MOD_CARDINAL');
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cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,Reg_D0,denum);
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cg.ungetregister(exprasmlist,Reg_D0);
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cg.ungetregister(exprasmlist,Reg_D1);
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end;
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end;
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begin
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cnotnode:=tm68knotnode;
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cmoddivnode:=tm68kmoddivnode;
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end.
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{
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$Log$
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Revision 1.10 2004-09-25 14:23:54 peter
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* ungetregister is now only used for cpuregisters, renamed to
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ungetcpuregister
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* renamed (get|unget)explicitregister(s) to ..cpuregister
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* removed location-release/reference_release
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Revision 1.9 2004/06/20 08:55:31 florian
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* logs truncated
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Revision 1.8 2004/04/25 21:26:16 florian
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* some m68k stuff fixed
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}
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