{ $Id$ Copyright (c) 1998-2002 by Florian Klaempfl Generate 680x0 assembler for math nodes This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. **************************************************************************** } unit n68kmat; {$i fpcdefs.inc} interface uses node,nmat,ncgmat,cpubase,cgbase; type tm68knotnode = class(tnotnode) procedure pass_2;override; end; tm68kmoddivnode = class(tcgmoddivnode) procedure emit_div_reg_reg(signed: boolean;denum,num : tregister);override; procedure emit_mod_reg_reg(signed: boolean;denum,num : tregister);override; end; implementation uses globtype,systems, cutils,verbose,globals, symconst,symdef,aasmbase,aasmtai,aasmcpu, pass_1,pass_2, ncon, cpuinfo,paramgr,defutil, tgobj,ncgutil,cgobj,rgobj,rgcpu,cgcpu,cg64f32; {***************************************************************************** TM68KNOTNODE *****************************************************************************} procedure tm68knotnode.pass_2; var hl : tasmlabel; opsize : tcgsize; begin opsize:=def_cgsize(resulttype.def); if is_boolean(resulttype.def) then begin { the second pass could change the location of left } { if it is a register variable, so we've to do } { this before the case statement } if left.location.loc<>LOC_JUMP then secondpass(left); case left.location.loc of LOC_JUMP : begin location_reset(location,LOC_JUMP,OS_NO); hl:=truelabel; truelabel:=falselabel; falselabel:=hl; secondpass(left); maketojumpbool(exprasmlist,left,lr_load_regvars); hl:=truelabel; truelabel:=falselabel; falselabel:=hl; end; LOC_FLAGS : begin location_copy(location,left.location); location_release(exprasmlist,left.location); inverse_flags(location.resflags); end; LOC_CONSTANT, LOC_REGISTER, LOC_CREGISTER, LOC_REFERENCE, LOC_CREFERENCE : begin location_force_reg(exprasmlist,left.location,def_cgsize(resulttype.def),true); exprasmlist.concat(taicpu.op_reg(A_TST,tcgsize2opsize[opsize],left.location.register)); location_release(exprasmlist,left.location); location_reset(location,LOC_FLAGS,OS_NO); location.resflags:=F_E; end; else internalerror(200203224); end; end else if is_64bitint(left.resulttype.def) then begin secondpass(left); location_copy(location,left.location); location_force_reg(exprasmlist,location,OS_64,false); cg64.a_op64_loc_reg(exprasmlist,OP_NOT,location, joinreg64(location.registerlow,location.registerhigh)); end else begin secondpass(left); location_force_reg(exprasmlist,left.location,def_cgsize(left.resulttype.def),false); location_copy(location,left.location); if location.loc=LOC_CREGISTER then location.register := cg.getintregister(exprasmlist,opsize); { perform the NOT operation } cg.a_op_reg_reg(exprasmlist,OP_NOT,opsize,location.register,left.location.register); end; end; {***************************************************************************** TM68KMODDIVNODE *****************************************************************************} procedure tm68kmoddivnode.emit_div_reg_reg(signed: boolean;denum,num : tregister); var continuelabel : tasmlabel; reg_d0,reg_d1 : tregister; begin { no RTL call, so inline a zero denominator verification } if aktoptprocessor <> MC68000 then begin { verify if denominator is zero } objectlibrary.getlabel(continuelabel); { compare against zero, if not zero continue } cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_NE,0,denum,continuelabel); cg.a_param_const(exprasmlist, OS_S32,200,paramanager.getintparaloc(pocall_default,1)); cg.a_call_name(exprasmlist,'FPC_HANDLEERROR'); cg.a_label(exprasmlist, continuelabel); if signed then exprasmlist.concat(taicpu.op_reg_reg(A_DIVS,S_L,denum,num)) else exprasmlist.concat(taicpu.op_reg_reg(A_DIVU,S_L,denum,num)); { result should be in denuminator } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,denum); end else begin { On MC68000/68010 mw must pass through RTL routines } reg_d0:=NR_D0; cg.getexplicitregister(exprasmlist,NR_D0); reg_d1:=NR_D1; cg.getexplicitregister(exprasmlist,NR_D1); { put numerator in d0 } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,reg_d0); { put denum in D1 } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,denum,reg_d1); if signed then cg.a_call_name(exprasmlist,'FPC_DIV_LONGINT') else cg.a_call_name(exprasmlist,'FPC_DIV_CARDINAL'); cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,reg_d0,denum); cg.ungetregister(exprasmlist,reg_d0); cg.ungetregister(exprasmlist,reg_d1); end; end; procedure tm68kmoddivnode.emit_mod_reg_reg(signed: boolean;denum,num : tregister); var tmpreg : tregister; continuelabel : tasmlabel; signlabel : tasmlabel; reg_d0,reg_d1 : tregister; begin { no RTL call, so inline a zero denominator verification } if aktoptprocessor <> MC68000 then begin { verify if denominator is zero } objectlibrary.getlabel(continuelabel); { compare against zero, if not zero continue } cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_NE,0,denum,continuelabel); cg.a_param_const(exprasmlist, OS_S32,200,paramanager.getintparaloc(pocall_default,1)); cg.a_call_name(exprasmlist,'FPC_HANDLEERROR'); cg.a_label(exprasmlist, continuelabel); tmpreg:=cg.getintregister(exprasmlist,OS_INT); { we have to prepare the high register with the } { correct sign. i.e we clear it, check if the low dword reg } { which will participate in the division is signed, if so we} { we extend the sign to the high doword register by inverting } { all the bits. } exprasmlist.concat(taicpu.op_reg(A_CLR,S_L,tmpreg)); objectlibrary.getlabel(signlabel); exprasmlist.concat(taicpu.op_reg(A_TST,S_L,tmpreg)); cg.a_cmp_const_reg_label(exprasmlist,OS_S32,OC_A,0,tmpreg,signlabel); { its a negative value, therefore change sign } cg.a_label(exprasmlist,signlabel); { tmpreg:num / denum } if signed then exprasmlist.concat(taicpu.op_reg_reg_reg(A_DIVSL,S_L,denum,tmpreg,num)) else exprasmlist.concat(taicpu.op_reg_reg_reg(A_DIVUL,S_L,denum,tmpreg,num)); { remainder in tmpreg } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,tmpreg,denum); cg.ungetregister(exprasmlist,tmpreg); end else begin { On MC68000/68010 mw must pass through RTL routines } Reg_d0:=NR_D0; cg.getexplicitregister(exprasmlist,NR_D0); Reg_d1:=NR_D1; cg.getexplicitregister(exprasmlist,NR_D1); { put numerator in d0 } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,num,Reg_D0); { put denum in D1 } cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,denum,Reg_D1); if signed then cg.a_call_name(exprasmlist,'FPC_MOD_LONGINT') else cg.a_call_name(exprasmlist,'FPC_MOD_CARDINAL'); cg.a_load_reg_reg(exprasmlist,OS_INT,OS_INT,Reg_D0,denum); cg.ungetregister(exprasmlist,Reg_D0); cg.ungetregister(exprasmlist,Reg_D1); end; end; begin cnotnode:=tm68knotnode; cmoddivnode:=tm68kmoddivnode; end. { $Log$ Revision 1.8 2004-04-25 21:26:16 florian * some m68k stuff fixed Revision 1.7 2003/06/07 18:57:04 jonas + added freeintparaloc * ppc get/freeintparaloc now check whether the parameter regs are properly allocated/deallocated (and get an extra list para) * ppc a_call_* now internalerrors if pi_do_call is not yet set * fixed lot of missing pi_do_call's Revision 1.6 2003/02/19 22:00:16 daniel * Code generator converted to new register notation - Horribily outdated todo.txt removed Revision 1.5 2003/02/02 19:25:54 carl * Several bugfixes for m68k target (register alloc., opcode emission) + VIS target + Generic add more complete (still not verified) Revision 1.4 2002/09/07 15:25:13 peter * old logs removed and tabs fixed Revision 1.3 2002/08/15 15:15:55 carl * jmpbuf size allocation for exceptions is now cpu specific (as it should) * more generic nodes for maths * several fixes for better m68k support Revision 1.2 2002/08/15 08:13:54 carl - a_load_sym_ofs_reg removed * loadvmt now calls loadaddr_ref_reg instead Revision 1.1 2002/08/14 19:16:34 carl + m68k type conversion nodes + started some mathematical nodes * out of bound references should now be handled correctly }