{ 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,globtype,globals,systems, symconst,symdef,aasmbase,aasmtai,aasmdata, defutil, cgbase,cgutils, pass_1,pass_2,procinfo, ncon,ncal, ncgutil, cpubase,cpuinfo,aasmcpu, rgobj,tgobj,cgobj,cgcpu; {***************************************************************************** FirstTypeConv *****************************************************************************} function tarmtypeconvnode.first_int_to_real: tnode; var fname: string[19]; begin if cs_fp_emulation in current_settings.moduleswitches then result:=inherited first_int_to_real else begin { converting a 64bit integer to a float requires a helper } if is_64bitint(left.resultdef) or is_currency(left.resultdef) then begin { hack to avoid double division by 10000, as it's already done by typecheckpass.resultdef_int_to_real } if is_currency(left.resultdef) then left.resultdef := s64inttype; if is_signed(left.resultdef) then fname := 'fpc_int64_to_double' else fname := 'fpc_qword_to_double'; result := ccallnode.createintern(fname,ccallparanode.create( left,nil)); left:=nil; if (tfloatdef(resultdef).floattype=s32real) then inserttypeconv(result,s32floattype); firstpass(result); exit; end else { other integers are supposed to be 32 bit } begin if is_signed(left.resultdef) then inserttypeconv(left,s32inttype) else inserttypeconv(left,u32inttype); firstpass(left); end; result := nil; case current_settings.fputype of fpu_fpa, fpu_fpa10, fpu_fpa11: expectloc:=LOC_FPUREGISTER; fpu_vfpv2, fpu_vfpv3: expectloc:=LOC_MMREGISTER; else internalerror(2009112702); end; end; end; procedure tarmtypeconvnode.second_int_to_real; const signedprec2vfpop: array[boolean,OS_F32..OS_F64] of tasmop = ((A_FUITOS,A_FUITOD), (A_FSITOS,A_FSITOD)); var instr : taicpu; href : treference; l1,l2 : tasmlabel; hregister : tregister; signed : boolean; begin case current_settings.fputype of fpu_fpa, fpu_fpa10, fpu_fpa11: begin { convert first to double to avoid precision loss } location_reset(location,LOC_FPUREGISTER,def_cgsize(resultdef)); location_force_reg(current_asmdata.CurrAsmList,left.location,OS_32,true); location.register:=cg.getfpuregister(current_asmdata.CurrAsmList,location.size); instr:=taicpu.op_reg_reg(A_FLT,location.register,left.location.register); if is_signed(left.resultdef) then begin instr.oppostfix:=cgsize2fpuoppostfix[def_cgsize(resultdef)]; current_asmdata.CurrAsmList.concat(instr); end else begin { flt does a signed load, fix this } case tfloatdef(resultdef).floattype of s32real, s64real: begin { converting dword to s64real first and cut off at the end avoids precision loss } instr.oppostfix:=PF_D; current_asmdata.CurrAsmList.concat(instr); current_asmdata.getdatalabel(l1); current_asmdata.getjumplabel(l2); reference_reset_symbol(href,l1,0,const_align(8)); current_asmdata.CurrAsmList.concat(Taicpu.op_reg_const(A_CMP,left.location.register,0)); cg.a_jmp_flags(current_asmdata.CurrAsmList,F_GE,l2); hregister:=cg.getfpuregister(current_asmdata.CurrAsmList,OS_F64); new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata_norel,l1.name,const_align(8)); current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l1)); { I got this constant from a test program (FK) } current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_32bit($41f00000)); current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_32bit(0)); cg.a_loadfpu_ref_reg(current_asmdata.CurrAsmList,OS_F64,OS_F64,href,hregister); current_asmdata.CurrAsmList.concat(setoppostfix(taicpu.op_reg_reg_reg(A_ADF,location.register,hregister,location.register),PF_D)); cg.a_label(current_asmdata.CurrAsmList,l2); { cut off if we should convert to single } if tfloatdef(resultdef).floattype=s32real then begin hregister:=location.register; location.register:=cg.getfpuregister(current_asmdata.CurrAsmList,location.size); current_asmdata.CurrAsmList.concat(setoppostfix(taicpu.op_reg_reg(A_MVF,location.register,hregister),PF_S)); end; end; else internalerror(200410031); end; end; end; fpu_vfpv2, fpu_vfpv3: begin location_reset(location,LOC_MMREGISTER,def_cgsize(resultdef)); signed:=left.location.size=OS_S32; location_force_mmregscalar(current_asmdata.CurrAsmList,left.location,false); if (left.location.size<>OS_F32) then internalerror(2009112703); if left.location.size<>location.size then location.register:=cg.getmmregister(current_asmdata.CurrAsmList,location.size) else location.register:=left.location.register; current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg( signedprec2vfpop[signed,location.size],location.register,left.location.register)); end; end; end; procedure tarmtypeconvnode.second_int_to_bool; var hregister : tregister; href : treference; resflags : tresflags; hlabel,oldTrueLabel,oldFalseLabel : tasmlabel; newsize : tcgsize; begin oldTrueLabel:=current_procinfo.CurrTrueLabel; oldFalseLabel:=current_procinfo.CurrFalseLabel; current_asmdata.getjumplabel(current_procinfo.CurrTrueLabel); current_asmdata.getjumplabel(current_procinfo.CurrFalseLabel); secondpass(left); if codegenerror then exit; { Explicit typecasts from any ordinal type to a boolean type } { must not change the ordinal value } if (nf_explicit in flags) and not(left.location.loc in [LOC_FLAGS,LOC_JUMP]) then begin location_copy(location,left.location); newsize:=def_cgsize(resultdef); { change of size? change sign only if location is LOC_(C)REGISTER? Then we have to sign/zero-extend } if (tcgsize2size[newsize]<>tcgsize2size[left.location.size]) or ((newsize<>left.location.size) and (location.loc in [LOC_REGISTER,LOC_CREGISTER])) then location_force_reg(current_asmdata.CurrAsmList,location,newsize,true) else location.size:=newsize; current_procinfo.CurrTrueLabel:=oldTrueLabel; current_procinfo.CurrFalseLabel:=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(current_asmdata.CurrAsmList,OS_INT); cg.a_load_ref_reg(current_asmdata.CurrAsmList,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(current_asmdata.CurrAsmList,OP_OR,OS_32,href,hregister); tcgarm(cg).cgsetflags:=false; end else begin location_force_reg(current_asmdata.CurrAsmList,left.location,left.location.size,true); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(current_asmdata.CurrAsmList,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(current_asmdata.CurrAsmList,OS_32); cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_32,OS_32,left.location.register64.reglo,hregister); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(current_asmdata.CurrAsmList,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(current_asmdata.CurrAsmList,OP_OR,left.location.size,left.location.register,left.location.register); tcgarm(cg).cgsetflags:=false; end; end; LOC_JUMP : begin hregister:=cg.getintregister(current_asmdata.CurrAsmList,OS_INT); current_asmdata.getjumplabel(hlabel); cg.a_label(current_asmdata.CurrAsmList,current_procinfo.CurrTrueLabel); cg.a_load_const_reg(current_asmdata.CurrAsmList,OS_INT,1,hregister); cg.a_jmp_always(current_asmdata.CurrAsmList,hlabel); cg.a_label(current_asmdata.CurrAsmList,current_procinfo.CurrFalseLabel); cg.a_load_const_reg(current_asmdata.CurrAsmList,OS_INT,0,hregister); cg.a_label(current_asmdata.CurrAsmList,hlabel); tcgarm(cg).cgsetflags:=true; cg.a_op_reg_reg(current_asmdata.CurrAsmList,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(resultdef)); location.register:=cg.getintregister(current_asmdata.CurrAsmList,location.size); cg.g_flags2reg(current_asmdata.CurrAsmList,location.size,resflags,location.register); if (is_cbool(resultdef)) then cg.a_op_reg_reg(current_asmdata.CurrAsmList,OP_NEG,location.size,location.register,location.register); current_procinfo.CurrTrueLabel:=oldTrueLabel; current_procinfo.CurrFalseLabel:=oldFalseLabel; end; begin ctypeconvnode:=tarmtypeconvnode; end.