{ $Id$ Copyright (c) 1998-2002 by Florian Klaempfl Generate PowerPC 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 nppccnv; {$i fpcdefs.inc} interface uses node,ncnv,ncgcnv,defcmp; type tppctypeconvnode = class(tcgtypeconvnode) protected { 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,pass_1,pass_2, ncon,ncal, ncgutil, cpubase,aasmcpu, rgobj,tgobj,cgobj; {***************************************************************************** FirstTypeConv *****************************************************************************} function tppctypeconvnode.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; {***************************************************************************** SecondTypeConv *****************************************************************************} procedure tppctypeconvnode.second_int_to_real; type tdummyarray = packed array[0..7] of byte; {$ifdef VER1_0} var dummy1, dummy2: int64; {$else VER1_0} const dummy1: int64 = $4330000080000000; dummy2: int64 = $4330000000000000; {$endif VER1_0} var tempconst: trealconstnode; ref: treference; valuereg, tempreg, leftreg, tmpfpureg: tregister; size: tcgsize; signed, valuereg_is_scratch: boolean; begin {$ifdef VER1_0} dummy1 := (int64(1) shl 31) or (int64($43300000) shl 32); dummy2 := int64($43300000) shl 32; {$endif VER1_0} valuereg_is_scratch := false; location_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def)); { the code here comes from the PowerPC Compiler Writer's Guide } { * longint to double } { addis R0,R0,0x4330 # R0 = 0x43300000 } { stw R0,disp(R1) # store upper half } { xoris R3,R3,0x8000 # flip sign bit } { stw R3,disp+4(R1) # store lower half } { lfd FR1,disp(R1) # float load double of value } { fsub FR1,FR1,FR2 # subtract 0x4330000080000000 } { * cardinal to double } { addis R0,R0,0x4330 # R0 = 0x43300000 } { stw R0,disp(R1) # store upper half } { stw R3,disp+4(R1) # store lower half } { lfd FR1,disp(R1) # float load double of value } { fsub FR1,FR1,FR2 # subtract 0x4330000000000000 } tg.Gettemp(exprasmlist,8,tt_normal,ref); signed := is_signed(left.resulttype.def); { we need a certain constant for the conversion, so create it here } if signed then tempconst := crealconstnode.create(double(tdummyarray(dummy1)), pbestrealtype^) else tempconst := crealconstnode.create(double(tdummyarray(dummy2)), pbestrealtype^); resulttypepass(tempconst); firstpass(tempconst); secondpass(tempconst); if (tempconst.location.loc <> LOC_CREFERENCE) or { has to be handled by a helper } is_64bitint(left.resulttype.def) then internalerror(200110011); case left.location.loc of LOC_REGISTER: begin leftreg := left.location.register; valuereg := leftreg; end; LOC_CREGISTER: begin leftreg := left.location.register; if signed then begin valuereg := cg.getintregister(exprasmlist,OS_INT); valuereg_is_scratch := true; end else valuereg := leftreg; end; LOC_REFERENCE,LOC_CREFERENCE: begin leftreg := cg.getintregister(exprasmlist,OS_INT); valuereg := leftreg; valuereg_is_scratch := true; if signed then size := OS_S32 else size := OS_32; cg.a_load_ref_reg(exprasmlist,def_cgsize(left.resulttype.def), size,left.location.reference,leftreg); end else internalerror(200110012); end; tempreg := cg.getintregister(exprasmlist,OS_INT); exprasmlist.concat(taicpu.op_reg_const(A_LIS,tempreg,$4330)); cg.a_load_reg_ref(exprasmlist,OS_32,OS_32,tempreg,ref); cg.ungetregister(exprasmlist,tempreg); if signed then exprasmlist.concat(taicpu.op_reg_reg_const(A_XORIS,valuereg, { xoris expects a unsigned 16 bit int (FK) } leftreg,$8000)); inc(ref.offset,4); cg.a_load_reg_ref(exprasmlist,OS_32,OS_32,valuereg,ref); dec(ref.offset,4); if (valuereg_is_scratch) then cg.ungetregister(exprasmlist,valuereg); if (left.location.loc = LOC_REGISTER) or ((left.location.loc = LOC_CREGISTER) and not signed) then cg.ungetregister(exprasmlist,leftreg) else cg.ungetregister(exprasmlist,valuereg); tmpfpureg := cg.getfpuregister(exprasmlist,OS_F64); cg.a_loadfpu_ref_reg(exprasmlist,OS_F64,tempconst.location.reference, tmpfpureg); tempconst.free; location.register := cg.getfpuregister(exprasmlist,OS_F64); exprasmlist.concat(taicpu.op_reg_ref(A_LFD,location.register, ref)); tg.ungetiftemp(exprasmlist,ref); exprasmlist.concat(taicpu.op_reg_reg_reg(A_FSUB,location.register, location.register,tmpfpureg)); cg.ungetregister(exprasmlist,tmpfpureg); { work around bug in some PowerPC processors } if (tfloatdef(resulttype.def).typ = s32real) then exprasmlist.concat(taicpu.op_reg_reg(A_FRSP,location.register, location.register)); end; procedure tppctypeconvnode.second_real_to_real; begin inherited second_real_to_real; { work around bug in some powerpc processors where doubles aren't } { properly converted to singles } if (tfloatdef(left.resulttype.def).typ = s64real) and (tfloatdef(resulttype.def).typ = s32real) then exprasmlist.concat(taicpu.op_reg_reg(A_FRSP,location.register, location.register)); end; procedure tppctypeconvnode.second_int_to_bool; var hreg1, hreg2 : tregister; href : treference; resflags : tresflags; opsize : tcgsize; 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); exit; end; location_reset(location,LOC_REGISTER,def_cgsize(resulttype.def)); opsize := def_cgsize(left.resulttype.def); case left.location.loc of LOC_CREFERENCE,LOC_REFERENCE,LOC_REGISTER,LOC_CREGISTER : begin if left.location.loc in [LOC_CREFERENCE,LOC_REFERENCE] then begin reference_release(exprasmlist,left.location.reference); hreg1:=cg.getintregister(exprasmlist,OS_INT); if left.location.size in [OS_64,OS_S64] then begin cg.a_load_ref_reg(exprasmlist,OS_INT,OS_INT, left.location.reference,hreg1); hreg2:=cg.getintregister(exprasmlist,OS_INT); href:=left.location.reference; inc(href.offset,4); cg.a_load_ref_reg(exprasmlist,OS_INT,OS_INT, href,hreg2); cg.ungetregister(exprasmlist,hreg2); cg.a_op_reg_reg_reg(exprasmlist,OP_OR,OS_32,hreg1,hreg2,hreg1); end else cg.a_load_ref_reg(exprasmlist,opsize,opsize, left.location.reference,hreg1); end else begin if left.location.size in [OS_64,OS_S64] then begin location_release(exprasmlist,left.location); hreg1:=cg.getintregister(exprasmlist,OS_32); cg.a_op_reg_reg_reg(exprasmlist,OP_OR,OS_32,left.location.registerhigh,left.location.registerlow,hreg1); end else hreg1 := left.location.register; end; hreg2 := cg.getintregister(exprasmlist,OS_INT); exprasmlist.concat(taicpu.op_reg_reg_const(A_SUBIC,hreg2, hreg1,1)); cg.ungetregister(exprasmlist,hreg2); exprasmlist.concat(taicpu.op_reg_reg_reg(A_SUBFE,hreg1,hreg2, hreg1)); end; LOC_FLAGS : begin hreg1:=cg.getintregister(exprasmlist,OS_INT); resflags:=left.location.resflags; cg.g_flags2reg(exprasmlist,location.size,resflags,hreg1); end; LOC_JUMP : begin hreg1:=cg.getintregister(exprasmlist,OS_INT); objectlibrary.getlabel(hlabel); cg.a_label(exprasmlist,truelabel); cg.a_load_const_reg(exprasmlist,OS_INT,1,hreg1); cg.a_jmp_always(exprasmlist,hlabel); cg.a_label(exprasmlist,falselabel); cg.a_load_const_reg(exprasmlist,OS_INT,0,hreg1); cg.a_label(exprasmlist,hlabel); cg.ungetregister(exprasmlist,hreg1); end; else internalerror(10062); end; location.register := hreg1; truelabel:=oldtruelabel; falselabel:=oldfalselabel; end; begin ctypeconvnode:=tppctypeconvnode; end. { $Log$ Revision 1.50 2004-02-03 22:32:54 peter * renamed xNNbittype to xNNinttype * renamed registers32 to registersint * replace some s32bit,u32bit with torddef([su]inttype).def.typ Revision 1.49 2003/12/31 22:30:39 jonas * fixed currency bugs. Int64 currency handling still needs to be rewritten so that it doesn't include conversions to real anymore though Revision 1.48 2003/12/07 11:21:05 jonas * finally fixed int->bool conversion properly Revision 1.47 2003/12/04 20:37:02 jonas * fixed some int<->boolean type conversion issues Revision 1.46 2003/11/29 16:27:19 jonas * fixed several ppc assembler reader related problems * local vars in assembler procedures now start at offset 4 * fixed second_int_to_bool (apparently an integer can be in LOC_JUMP??) Revision 1.45 2003/11/04 22:30:15 florian + type cast variant<->enum * cnv. node second pass uses now as well helper wrappers Revision 1.44 2003/10/17 01:22:08 florian * compilation of the powerpc compiler fixed Revision 1.43 2003/10/01 20:34:49 peter * procinfo unit contains tprocinfo * cginfo renamed to cgbase * moved cgmessage to verbose * fixed ppc and sparc compiles Revision 1.42 2003/09/03 19:35:24 peter * powerpc compiles again Revision 1.41 2003/08/09 15:28:29 jonas * fixed conversion from signed value to floats if the compiler is compiled with a 1.0.x compiler Revision 1.40 2003/06/14 22:32:43 jonas * ppc compiles with -dnewra, haven't tried to compile anything with it yet though Revision 1.39 2003/06/12 22:09:54 jonas * tcginnode.pass_2 doesn't call a helper anymore in any case * fixed ungetregisterfpu compilation problems Revision 1.38 2003/06/04 11:58:58 jonas * calculate localsize also in g_return_from_proc since it's now called before g_stackframe_entry (still have to fix macos) * compilation fixes (cycle doesn't work yet though) Revision 1.37 2003/06/01 21:38:06 peter * getregisterfpu size parameter added * op_const_reg size parameter added * sparc updates Revision 1.36 2003/05/11 20:42:08 jonas * fixed bug in second_int_to_bool I introduced previous time (secondpass was being called twice!) Revision 1.35 2003/05/11 13:06:44 jonas * fixed second_int_to_bool() (but still problem with typecasts used for var parameters, not sure about solution) Revision 1.34 2003/05/02 15:13:38 jonas * yet another final fix for second_int_to_real() :) (tested this time) Revision 1.33 2003/04/24 22:29:58 florian * fixed a lot of PowerPC related stuff Revision 1.32 2003/04/23 21:10:54 peter * fix compile for ppc,sparc,m68k Revision 1.31 2003/04/23 12:35:35 florian * fixed several issues with powerpc + applied a patch from Jonas for nested function calls (PowerPC only) * ... Revision 1.30 2003/03/11 21:46:24 jonas * lots of new regallocator fixes, both in generic and ppc-specific code (ppc compiler still can't compile the linux system unit though) Revision 1.29 2003/02/19 22:00:16 daniel * Code generator converted to new register notation - Horribily outdated todo.txt removed Revision 1.28 2002/12/05 14:28:13 florian * some variant <-> dyn. array stuff Revision 1.27 2002/11/25 17:43:28 peter * splitted defbase in defutil,symutil,defcmp * merged isconvertable and is_equal into compare_defs(_ext) * made operator search faster by walking the list only once Revision 1.26 2002/10/18 16:38:42 jonas + added entry for pwchar_to_string conversion addition Revision 1.25 2002/09/17 18:54:06 jonas * a_load_reg_reg() now has two size parameters: source and dest. This allows some optimizations on architectures that don't encode the register size in the register name. Revision 1.24 2002/08/23 16:14:50 peter * tempgen cleanup * tt_noreuse temp type added that will be used in genentrycode Revision 1.23 2002/08/18 10:34:30 florian * more ppc assembling fixes Revision 1.22 2002/08/14 19:30:42 carl + added fixing because first_in_to_real is now completely generic Revision 1.21 2002/08/11 06:14:41 florian * fixed powerpc compilation problems Revision 1.20 2002/08/10 17:15:31 jonas * various fixes and optimizations Revision 1.19 2002/07/29 21:23:44 florian * more fixes for the ppc + wrappers for the tcnvnode.first_* stuff introduced Revision 1.18 2002/07/29 09:20:20 jonas + second_int_to_int implementation which is almost the same as the generic implementation, but it avoids some unnecessary type conversions Revision 1.17 2002/07/27 19:55:15 jonas + generic implementation of tcg.g_flags2ref() * tcg.flags2xxx() now also needs a size parameter Revision 1.16 2002/07/24 14:38:00 florian * small typo fixed, compiles with 1.0.x again Revision 1.15 2002/07/21 16:57:22 jonas * hopefully final fix for second_int_to_real() Revision 1.14 2002/07/20 11:58:05 florian * types.pas renamed to defbase.pas because D6 contains a types unit so this would conflicts if D6 programms are compiled + Willamette/SSE2 instructions to assembler added Revision 1.13 2002/07/13 06:49:39 jonas * fixed fpu constants in second_int_to_real (fpu values are also stored in big endian) Revision 1.12 2002/07/12 22:02:22 florian * fixed to compile with 1.1 Revision 1.11 2002/07/11 14:41:34 florian * start of the new generic parameter handling Revision 1.10 2002/07/11 07:42:31 jonas * fixed nppccnv and enabled it - removed PPC specific second_int_to_int and use the generic one instead Revision 1.9 2002/05/20 13:30:42 carl * bugfix of hdisponen (base must be set, not index) * more portability fixes Revision 1.8 2002/05/18 13:34:26 peter * readded missing revisions Revision 1.7 2002/05/16 19:46:53 carl + defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand + try to fix temp allocation (still in ifdef) + generic constructor calls + start of tassembler / tmodulebase class cleanup Revision 1.5 2002/04/06 18:13:02 jonas * several powerpc-related additions and fixes }