{ Copyright (c) 1998-2002 by Florian Klaempfl Generate ARM assembler for type converting 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 narmcnv; {$i fpcdefs.inc} interface uses node,ncnv,ncgcnv,defcmp; type tarmtypeconvnode = class(tcgtypeconvnode) protected function first_int_to_real: tnode;override; { procedure second_int_to_int;override; } { procedure second_string_to_string;override; } { procedure second_cstring_to_pchar;override; } { procedure second_string_to_chararray;override; } { procedure second_array_to_pointer;override; } // function first_int_to_real: tnode; override; { procedure second_pointer_to_array;override; } { procedure second_chararray_to_string;override; } { procedure second_char_to_string;override; } procedure second_int_to_real;override; // procedure second_real_to_real;override; { procedure second_cord_to_pointer;override; } { procedure second_proc_to_procvar;override; } { procedure second_bool_to_int;override; } procedure second_int_to_bool;override; { procedure second_load_smallset;override; } { procedure second_ansistring_to_pchar;override; } { procedure second_pchar_to_string;override; } { procedure second_class_to_intf;override; } { procedure second_char_to_char;override; } end; implementation uses verbose,globals,systems, symconst,symdef,aasmbase,aasmtai, defutil, cgbase,cgutils, pass_1,pass_2, ncon,ncal, ncgutil, cpubase,aasmcpu, rgobj,tgobj,cgobj,cgcpu; {***************************************************************************** FirstTypeConv *****************************************************************************} function tarmtypeconvnode.first_int_to_real: tnode; var fname: string[19]; begin { converting a 64bit integer to a float requires a helper } if is_64bitint(left.resulttype.def) or is_currency(left.resulttype.def) then begin { hack to avoid double division by 10000, as it's already done by resulttypepass.resulttype_int_to_real } if is_currency(left.resulttype.def) then left.resulttype := s64inttype; if is_signed(left.resulttype.def) then fname := 'fpc_int64_to_double' else fname := 'fpc_qword_to_double'; result := ccallnode.createintern(fname,ccallparanode.create( left,nil)); left:=nil; firstpass(result); exit; end else { other integers are supposed to be 32 bit } begin if is_signed(left.resulttype.def) then inserttypeconv(left,s32inttype) else inserttypeconv(left,u32inttype); firstpass(left); end; result := nil; if registersfpu<1 then registersfpu:=1; expectloc:=LOC_FPUREGISTER; end; procedure tarmtypeconvnode.second_int_to_real; var instr : taicpu; begin location_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def)); location_force_reg(exprasmlist,left.location,OS_32,true); location.register:=cg.getfpuregister(exprasmlist,location.size); instr:=taicpu.op_reg_reg(A_FLT,location.register,left.location.register); instr.oppostfix:=cgsize2fpuoppostfix[def_cgsize(resulttype.def)]; exprasmlist.concat(instr); end; procedure tarmtypeconvnode.second_int_to_bool; var hregister : tregister; href : treference; resflags : tresflags; hlabel,oldtruelabel,oldfalselabel : tasmlabel; begin oldtruelabel:=truelabel; oldfalselabel:=falselabel; objectlibrary.getlabel(truelabel); objectlibrary.getlabel(falselabel); secondpass(left); if codegenerror then exit; { byte(boolean) or word(wordbool) or longint(longbool) must be accepted for var parameters } if (nf_explicit in flags) and (left.resulttype.def.size=resulttype.def.size) and (left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE,LOC_CREGISTER]) then begin location_copy(location,left.location); truelabel:=oldtruelabel; falselabel:=oldfalselabel; exit; end; { Load left node into flag F_NE/F_E } resflags:=F_NE; case left.location.loc of LOC_CREFERENCE, LOC_REFERENCE : begin if left.location.size in [OS_64,OS_S64] then begin hregister:=cg.getintregister(exprasmlist,OS_INT); cg.a_load_ref_reg(exprasmlist,OS_32,OS_32,left.location.reference,hregister); href:=left.location.reference; inc(href.offset,4); tcgarm(cg).cgsetflags:=true; cg.a_op_ref_reg(exprasmlist,OP_OR,OS_32,href,hregister); tcgarm(cg).cgsetflags:=false; end else begin location_force_reg(exprasmlist,left.location,left.location.size,true); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(exprasmlist,OP_OR,left.location.size,left.location.register,left.location.register); tcgarm(cg).cgsetflags:=false; end; end; LOC_FLAGS : begin resflags:=left.location.resflags; end; LOC_REGISTER,LOC_CREGISTER : begin if left.location.size in [OS_64,OS_S64] then begin hregister:=cg.getintregister(exprasmlist,OS_32); cg.a_load_reg_reg(exprasmlist,OS_32,OS_32,left.location.register64.reglo,hregister); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(exprasmlist,OP_OR,OS_32,left.location.register64.reghi,hregister); tcgarm(cg).cgsetflags:=false; end else begin tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(exprasmlist,OP_OR,left.location.size,left.location.register,left.location.register); tcgarm(cg).cgsetflags:=false; end; end; LOC_JUMP : begin hregister:=cg.getintregister(exprasmlist,OS_INT); objectlibrary.getlabel(hlabel); cg.a_label(exprasmlist,truelabel); cg.a_load_const_reg(exprasmlist,OS_INT,1,hregister); cg.a_jmp_always(exprasmlist,hlabel); cg.a_label(exprasmlist,falselabel); cg.a_load_const_reg(exprasmlist,OS_INT,0,hregister); cg.a_label(exprasmlist,hlabel); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(exprasmlist,OP_OR,OS_INT,hregister,hregister); tcgarm(cg).cgsetflags:=false; end; else internalerror(200311301); end; { load flags to register } location_reset(location,LOC_REGISTER,def_cgsize(resulttype.def)); location.register:=cg.getintregister(exprasmlist,location.size); cg.g_flags2reg(exprasmlist,location.size,resflags,location.register); truelabel:=oldtruelabel; falselabel:=oldfalselabel; end; begin ctypeconvnode:=tarmtypeconvnode; end.