{ Copyright (c) 1998-2006 by Florian Klaempfl This unit implements an abstract asmoutput class for all processor types 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. **************************************************************************** } { @abstract(This unit implements an abstract asm output class for all processor types) This unit implements an abstract assembler output class for all processors, these are then overridden for each assembler writer to actually write the data in these classes to an assembler file. } unit aasmtai; {$i fpcdefs.inc} interface uses cutils,cclasses, globtype,systems, cpuinfo,cpubase, {$ifdef llvm} { overrides max_operands } llvmbase, {$endif llvm} cgbase,cgutils, symtype, aasmbase,aasmdata,ogbase {$ifdef jvm} ,widestr {$endif jvm} ; type { keep the number of elements in this enumeration less or equal than 32 as long as FPC knows only 4 byte and 32 byte sets (FK) } taitype = ( ait_none, ait_align, ait_section, ait_comment, ait_string, ait_instruction, ait_datablock, ait_symbol, { needed to calc the size of a symbol } ait_symbol_end, ait_directive, ait_label, ait_const, ait_realconst, ait_typedconst, ait_stab, ait_force_line, ait_function_name, ait_symbolpair, { used to split into tiny assembler files } ait_cutobject, ait_regalloc, ait_tempalloc, { used to mark assembler blocks and inlined functions } ait_marker, { used to describe a new location of a variable } ait_varloc, {$ifdef JVM} { JVM only } ait_jvar, { debug information for a local variable } ait_jcatch, { exception catch clause } {$endif JVM} {$ifdef llvm} ait_llvmins, { llvm instruction } ait_llvmalias, { alias for a symbol } ait_llvmdecl, { llvm symbol declaration (global/external variable, external procdef) } {$endif} { SEH directives used in ARM,MIPS and x86_64 COFF targets } ait_seh_directive ); taiconst_type = ( aitconst_128bit, aitconst_64bit, aitconst_32bit, aitconst_16bit, aitconst_8bit, aitconst_sleb128bit, aitconst_uleb128bit, { win32 only } aitconst_rva_symbol, aitconst_secrel32_symbol, { darwin only } { From gcc/config/darwin.c (darwin_asm_output_dwarf_delta): *** Output a difference of two labels that will be an assembly time constant if the two labels are local. (.long lab1-lab2 will be very different if lab1 is at the boundary between two sections; it will be relocated according to the second section, not the first, so one ends up with a difference between labels in different sections, which is bad in the dwarf2 eh context for instance.) *** We cannot use this everywhere, because older versions of the darwin assembler don't support the construct used for these relsyms (nor do they support dwarf, for that matter) } aitconst_darwin_dwarf_delta64, aitconst_darwin_dwarf_delta32, { ARM Thumb-2 only } aitconst_half16bit, { used for table jumps. The actual value is the 16bit value shifted left once } { AVR } aitconst_gs, { Upper 16-bit of 17-bit constant } { for use by dwarf debugger information } aitconst_16bit_unaligned, aitconst_32bit_unaligned, aitconst_64bit_unaligned, { i8086 far pointer; emits: 'DW symbol, SEG symbol' } aitconst_farptr, { i8086 segment of symbol; emits: 'DW SEG symbol' } aitconst_seg, { i8086 data segment group; emits: 'DW dgroup' generated by the this inline asm: DW SEG @DATA in all memory models, except huge } aitconst_dgroup, { i8086 far data segment of the current pascal module (unit or program); emits: 'DW CURRENTMODULENAME_DATA' generated by the this inline asm: DW SEG @DATA in the huge memory model } aitconst_fardataseg, { offset of symbol's GOT slot in GOT } aitconst_got, { offset of symbol itself from GOT } aitconst_gotoff_symbol ); tairealconsttype = ( aitrealconst_s32bit, aitrealconst_s64bit, aitrealconst_s80bit, aitrealconst_s128bit, aitrealconst_s64comp ); const {$if defined(cpu64bitaddr)} aitconst_ptr = aitconst_64bit; aitconst_ptr_unaligned = aitconst_64bit_unaligned; aitconst_sizeint = aitconst_64bit; aitconst_sizeint_unaligned = aitconst_64bit_unaligned; {$elseif defined(cpu32bitaddr)} aitconst_ptr = aitconst_32bit; aitconst_ptr_unaligned = aitconst_32bit_unaligned; aitconst_sizeint = aitconst_32bit; aitconst_sizeint_unaligned = aitconst_32bit_unaligned; {$elseif defined(cpu16bitaddr)} aitconst_ptr = aitconst_16bit; aitconst_ptr_unaligned = aitconst_16bit_unaligned; aitconst_sizeint = aitconst_16bit; aitconst_sizeint_unaligned = aitconst_16bit_unaligned; {$endif} {$if defined(cpu64bitalu)} aitconst_aint = aitconst_64bit; {$elseif defined(cpu32bitalu)} aitconst_aint = aitconst_32bit; {$elseif defined(cpu16bitalu)} aitconst_aint = aitconst_16bit; {$elseif defined(cpu8bitalu)} aitconst_aint = aitconst_8bit; {$endif} taitypestr : array[taitype] of string[24] = ( '', 'align', 'section', 'comment', 'string', 'instruction', 'datablock', 'symbol', 'symbol_end', 'symbol_directive', 'label', 'const', 'realconst', 'typedconst', 'stab', 'force_line', 'function_name', 'symbolpair', 'cut', 'regalloc', 'tempalloc', 'marker', 'varloc', {$ifdef JVM} 'jvar', 'jcatch', {$endif JVM} {$ifdef llvm} 'llvmins', 'llvmalias', 'llvmdecl', {$endif} 'seh_directive' ); type { Types of operand } toptype=(top_none,top_reg,top_ref,top_const,top_bool,top_local {$ifdef arm} { ARM only } ,top_regset ,top_modeflags ,top_specialreg {$endif arm} {$if defined(arm) or defined(aarch64)} ,top_conditioncode ,top_shifterop {$endif defined(arm) or defined(aarch64)} {$ifdef m68k} { m68k only } ,top_regset ,top_regpair ,top_realconst {$endif m68k} {$ifdef jvm} { jvm only} ,top_single ,top_double ,top_string ,top_wstring {$endif jvm} {$ifdef llvm} { llvm only } ,top_single ,top_double ,top_undef {$ifdef cpuextended} ,top_extended80 {$endif cpuextended} ,top_tai ,top_def ,top_fpcond ,top_cond ,top_para ,top_asmlist {$endif llvm} ); { kinds of operations that an instruction can perform on an operand } topertype = (operand_read,operand_write,operand_readwrite); tlocaloper = record localsym : pointer; localsymderef : tderef; localsymofs : longint; localindexreg : tregister; localscale : byte; localgetoffset, localforceref : boolean end; plocaloper = ^tlocaloper; const { ait_* types which don't result in executable code or which don't influence the way the program runs/behaves, but which may be encountered by the optimizer (= if it's sometimes added to the exprasm list). Update if you add a new ait type! } SkipInstr = [ait_comment, ait_symbol,ait_section ,ait_stab, ait_function_name, ait_force_line ,ait_regalloc, ait_tempalloc, ait_symbol_end ,ait_directive ,ait_varloc, {$ifdef JVM} ait_jvar, {$endif JVM} ait_seh_directive]; { ait_* types which do not have line information (and hence which are of type tai, otherwise, they are of type tailineinfo } SkipLineInfo =[ait_label, ait_regalloc,ait_tempalloc, ait_stab,ait_function_name, ait_cutobject,ait_marker,ait_varloc,ait_align,ait_section,ait_comment, ait_const,ait_directive, ait_symbolpair, ait_realconst, ait_symbol, {$ifdef JVM} ait_jvar, ait_jcatch, {$endif JVM} {$ifdef llvm} ait_llvmdecl, {$endif llvm} ait_seh_directive ]; type { cut type, required for alphanumeric ordering of the assembler filenames } TCutPlace=(cut_normal,cut_begin,cut_end); TAsmMarker = ( mark_NoPropInfoStart,mark_NoPropInfoEnd, mark_AsmBlockStart,mark_AsmBlockEnd, mark_NoLineInfoStart,mark_NoLineInfoEnd,mark_BlockStart, mark_Position ); TRegAllocType = (ra_alloc,ra_dealloc,ra_sync,ra_resize,ra_markused); TStabType = (stab_stabs,stab_stabn,stab_stabd, { AIX/XCOFF stab types } stab_stabx, { begin/end include file } stabx_bi,stabx_ei, { begin/end function } stabx_bf, stabx_ef, { begin/end static data block } stabx_bs, stabx_es, { line spec, function start/end label } stabx_line, stabx_function); TAsmDirective=( asd_indirect_symbol, asd_extern,asd_nasm_import, asd_toc_entry, asd_reference,asd_no_dead_strip,asd_weak_reference,asd_lazy_reference, asd_weak_definition, { for Jasmin } asd_jclass,asd_jinterface,asd_jsuper,asd_jfield,asd_jlimit,asd_jline, { .ent/.end for MIPS } asd_ent,asd_ent_end, { supported by recent clang-based assemblers for data-in-code } asd_data_region, asd_end_data_region, { ARM } asd_thumb_func,asd_code, { restricts the assembler only to those instructions, which are available on the specified CPU; this represents directives such as NASM's 'CPU 686' or MASM/TASM's '.686p'. Might not be supported by all assemblers. } asd_cpu ); TAsmSehDirective=( ash_proc,ash_endproc, ash_endprologue,ash_handler,ash_handlerdata, ash_eh,ash_32,ash_no32, ash_setframe,ash_stackalloc,ash_pushreg, ash_savereg,ash_savexmm,ash_pushframe ); TSymbolPairKind = (spk_set, spk_thumb_set, spk_localentry); const regallocstr : array[tregalloctype] of string[10]=('allocated','released','sync','resized','used'); tempallocstr : array[boolean] of string[10]=('released','allocated'); stabtypestr : array[TStabType] of string[8]=( 'stabs','stabn','stabd', 'stabx', 'bi','ei', 'bf','ef', 'bs','es', 'line','function'); directivestr : array[TAsmDirective] of string[23]=( 'indirect_symbol', 'extern','nasm_import', 'tc', 'reference', 'no_dead_strip','weak','lazy_reference','weak', { for Jasmin } 'class','interface','super','field','limit','line', { .ent/.end for MIPS } 'ent','end', { supported by recent clang-based assemblers for data-in-code } 'data_region','end_data_region', { ARM } 'thumb_func', 'code', 'cpu' ); sehdirectivestr : array[TAsmSehDirective] of string[16]=( '.seh_proc','.seh_endproc', '.seh_endprologue','.seh_handler','.seh_handlerdata', '.seh_eh','.seh_32','seh_no32', '.seh_setframe','.seh_stackalloc','.seh_pushreg', '.seh_savereg','.seh_savexmm','.seh_pushframe' ); symbolpairkindstr: array[TSymbolPairKind] of string[11]=( '.set', '.thumb_set', '.localentry' ); type tai = class; { please keep the size of this record <=12 bytes and keep it properly aligned } toper = record ot : longint; case typ : toptype of top_none : (); top_reg : (reg:tregister); top_ref : (ref:preference); top_const : (val:tcgint); top_bool : (b:boolean); { local varsym that will be inserted in pass_generate_code } top_local : (localoper:plocaloper); {$ifdef arm} top_regset : (regset:^tcpuregisterset; regtyp: tregistertype; subreg: tsubregister; usermode: boolean); top_modeflags : (modeflags : tcpumodeflags); top_specialreg : (specialreg:tregister; specialflags:tspecialregflags); {$endif arm} {$if defined(arm) or defined(aarch64)} top_shifterop : (shifterop : pshifterop); top_conditioncode : (cc : TAsmCond); {$endif defined(arm) or defined(aarch64)} {$ifdef m68k} top_regset : (dataregset,addrregset,fpuregset: tcpuregisterset); top_regpair : (reghi,reglo: tregister); top_realconst : (val_real:bestreal); {$endif m68k} {$ifdef jvm} top_single : (sval:single); top_double : (dval:double); top_string : (pcvallen: aint; pcval: pchar); top_wstring : (pwstrval: pcompilerwidestring); {$endif jvm} {$ifdef llvm} top_single : (sval:single); top_double : (dval:double); top_undef : (); {$ifdef cpuextended} top_extended80 : (eval:extended); {$endif cpuextended} top_tai : (ai: tai); top_def : (def: tdef); top_cond : (cond: topcmp); top_fpcond : (fpcond: tllvmfpcmp); top_para : (paras: tfplist); top_asmlist : (asmlist: tasmlist); {$endif llvm} end; poper=^toper; { abstract assembler item } tai = class(TLinkedListItem) {$ifndef NOOPT} { pointer to record with optimizer info about this tai object } optinfo : pointer; {$endif NOOPT} typ : taitype; constructor Create; constructor ppuload(t:taitype;ppufile:tcompilerppufile);virtual; procedure ppuwrite(ppufile:tcompilerppufile);virtual; procedure buildderefimpl;virtual; procedure derefimpl;virtual; end; { abstract assembler item with line information } tailineinfo = class(tai) fileinfo : tfileposinfo; constructor Create; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; tai_simple = class(tai) constructor create(_typ : taitype); end; taiclass = class of tai; taiclassarray = array[taitype] of taiclass; { Generates an assembler string } tai_string = class(tailineinfo) str : pchar; { extra len so the string can contain an \0 } len : longint; constructor Create(const _str : string); constructor Create_pchar(_str : pchar;length : longint); destructor Destroy;override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; function getcopy:tlinkedlistitem;override; end; { Generates a common label } tai_symbol = class(tai) sym : tasmsymbol; value : puint; size : longint; is_global, has_value : boolean; constructor Create(_sym:tasmsymbol;siz:longint); constructor Create_Global(_sym:tasmsymbol;siz:longint); constructor Createname(const _name : string;_symtyp:Tasmsymtype;siz:longint;def:tdef); constructor Createname_global(const _name : string;_symtyp:Tasmsymtype;siz:longint;def:tdef); constructor Createname_global_value(const _name : string;_symtyp:Tasmsymtype;siz:longint;val:ptruint;def:tdef); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure derefimpl;override; end; tai_symbol_end = class(tailineinfo) sym : tasmsymbol; constructor Create(_sym:tasmsymbol); constructor Createname(const _name : string); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure derefimpl;override; end; tai_directive = class(tailineinfo) name : ansistring; directive : TAsmDirective; constructor Create(_directive:TAsmDirective;const _name:ansistring); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; { Generates an assembler label } tai_label = class(tai) labsym : tasmlabel; {$ifdef arm} { set to true when the label has been moved by insertpcrelativedata to the correct location so one label can be used multiple times } moved : boolean; { true, if a label has been already inserted, this is important for arm thumb where no negative pc relative offsets are allowed } inserted : boolean; {$endif arm} constructor Create(_labsym : tasmlabel); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure derefimpl;override; end; { Generates an assembler comment } tai_comment = class(tai) str : pchar; constructor Create(_str : pchar); destructor Destroy; override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; function getcopy:tlinkedlistitem;override; end; { Generates a section / segment directive } tai_section = class(tai) sectype : TAsmSectiontype; secorder : TasmSectionorder; secalign : byte; name : pshortstring; sec : TObjSection; { used in binary writer } destructor Destroy;override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; {$push}{$warnings off} private { this constructor is made private on purpose } { because sections should be created via new_section() } constructor Create(Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default); {$pop} end; { Generates an uninitializised data block } tai_datablock = class(tailineinfo) is_global : boolean; sym : tasmsymbol; size : asizeint; constructor Create(const _name : string;_size : asizeint; def: tdef); constructor Create_global(const _name : string;_size : asizeint; def: tdef); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure derefimpl;override; end; { Generates an integer const } { tai_const } tai_const = class(tai) sym, endsym : tasmsymbol; { if symbols and offset are provided the symofs is used, the value is calculated during assembling } symofs, value : int64; consttype : taiconst_type; { we use for the 128bit int64/qword for now because I can't imagine a case where we need 128 bit now (FK) } constructor Create(_typ:taiconst_type;_value : int64); constructor Create_128bit(_value : int64); constructor Create_64bit(_value : int64); constructor Create_32bit(_value : longint); constructor Create_16bit(_value : word); constructor Create_64bit_unaligned(_value : int64); constructor Create_32bit_unaligned(_value : longint); constructor Create_16bit_unaligned(_value : word); constructor Create_8bit(_value : byte); constructor Create_char(size: integer; _value: dword); constructor Create_sleb128bit(_value : int64); constructor Create_uleb128bit(_value : qword); constructor Create_aint(_value : aint); constructor Create_sizeint(_value : asizeint); constructor Create_sizeint_unaligned(_value : asizeint); constructor Create_sym(_sym:tasmsymbol); {$ifdef i8086} constructor Create_sym_near(_sym:tasmsymbol); constructor Create_sym_far(_sym:tasmsymbol); {$endif i8086} constructor Create_type_sym(_typ:taiconst_type;_sym:tasmsymbol); constructor Create_sym_offset(_sym:tasmsymbol;ofs:asizeint); constructor Create_type_sym_offset(_typ:taiconst_type;_sym:tasmsymbol;ofs:asizeint); constructor Create_rel_sym(_typ:taiconst_type;_sym,_endsym:tasmsymbol); constructor Create_rel_sym_offset(_typ : taiconst_type; _sym,_endsym : tasmsymbol; _ofs : int64); constructor Create_rva_sym(_sym:tasmsymbol); constructor Createname(const name:string;ofs:asizeint); constructor Createname(const name:string;_symtyp:Tasmsymtype;ofs:asizeint); constructor Create_type_name(_typ:taiconst_type;const name:string;ofs:asizeint); constructor Create_type_name(_typ:taiconst_type;const name:string;_symtyp:Tasmsymtype;ofs:asizeint); constructor Create_nil_codeptr; constructor Create_nil_codeptr_unaligned; constructor Create_nil_dataptr; constructor Create_nil_dataptr_unaligned; constructor Create_int_codeptr(_value: int64); constructor Create_int_codeptr_unaligned(_value: int64); constructor Create_int_dataptr(_value: int64); constructor Create_int_dataptr_unaligned(_value: int64); {$ifdef i8086} constructor Create_seg_name(const name:string); constructor Create_dgroup; constructor Create_fardataseg; {$endif i8086} constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure derefimpl;override; function getcopy:tlinkedlistitem;override; function size:longint; end; { floating point const } tformatoptions = (fo_none,fo_hiloswapped); tai_realconst = class(tai) realtyp: tairealconsttype; savesize: byte; value: record case tairealconsttype of aitrealconst_s32bit: (s32val: ts32real); aitrealconst_s64bit: (s64val: ts64real); aitrealconst_s80bit: (s80val: ts80real); aitrealconst_s128bit: (s128val: ts128real); aitrealconst_s64comp: (s64compval: ts64comp); end; {$ifdef ARM} formatoptions : tformatoptions; {$endif ARM} constructor create_s32real(val: ts32real); constructor create_s64real(val: ts64real); {$ifdef ARM} constructor create_s64real_hiloswapped(val : ts64real); {$endif ARM} constructor create_s80real(val: ts80real; _savesize: byte); constructor create_s128real(val: ts128real); constructor create_s64compreal(val: ts64comp); constructor ppuload(t: taitype;ppufile: tcompilerppufile); override; procedure ppuwrite(ppufile: tcompilerppufile); override; function getcopy:tlinkedlistitem;override; function datasize: word; end; { tai_stab } tai_stab = class(tai) str : pchar; stabtype : TStabType; constructor Create(_stabtype:TStabType;_str : pchar); constructor Create_str(_stabtype:TStabType;const s:string); constructor create_ansistr(_stabtype: TStabType; const s: ansistring); destructor Destroy;override; end; tai_force_line = class(tailineinfo) constructor Create; end; tai_function_name = class(tai) funcname : pshortstring; constructor create(const s:string); destructor destroy;override; end; { Insert a cut to split assembler into several smaller files } tai_cutobject = class(tai) place : tcutplace; constructor Create; constructor Create_begin; constructor Create_end; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; { Insert a marker for assembler and inline blocks } tai_marker = class(tai) Kind: TAsmMarker; Constructor Create(_Kind: TAsmMarker); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; tai_tempalloc = class(tai) allocation : boolean; {$ifdef EXTDEBUG} problem : pshortstring; {$endif EXTDEBUG} temppos, tempsize : longint; constructor alloc(pos,size:longint); constructor dealloc(pos,size:longint); {$ifdef EXTDEBUG} constructor allocinfo(pos,size:longint;const st:string); {$endif EXTDEBUG} constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; destructor destroy;override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; tai_regalloc = class(tai) reg : tregister; ratype : TRegAllocType; { tells BuildLabelTableAndFixRegAlloc that the deallocation should be kept } keep : boolean; { reg(de)alloc belongs to this instruction, this is only used for automatic inserted (de)alloc for imaginary register and required for spilling code } instr : tai; constructor alloc(r : tregister;ainstr:tai); constructor dealloc(r : tregister;ainstr:tai); constructor sync(r : tregister); constructor resize(r : tregister); constructor markused(r : tregister); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; tadd_reg_instruction_proc=procedure(instr:Tai;r:tregister) of object; { Class template for assembler instructions } tai_cpu_abstract = class(tailineinfo) protected procedure ppuloadoper(ppufile:tcompilerppufile;var o:toper);virtual; procedure ppuwriteoper(ppufile:tcompilerppufile;const o:toper);virtual; procedure ppubuildderefimploper(var o:toper);virtual;abstract; procedure ppuderefoper(var o:toper);virtual;abstract; public { Condition flags for instruction } condition : TAsmCond; { Number of operands to instruction } ops : byte; { Number of allocate oper structures } opercnt : byte; { Operands of instruction } oper : array[0..max_operands-1] of poper; { Actual opcode of instruction } opcode : tasmop; {$ifdef x86} segprefix : tregister; {$endif x86} { true if instruction is a jmp } is_jmp : boolean; { is this instruction a jump? (needed for optimizer) } Constructor Create(op : tasmop);virtual; Destructor Destroy;override; function getcopy:TLinkedListItem;override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure buildderefimpl;override; procedure derefimpl;override; procedure SetCondition(const c:TAsmCond); procedure allocate_oper(opers:longint); procedure loadconst(opidx:longint;l:aint); procedure loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint); procedure loadlocal(opidx:longint;s:pointer;sofs:longint;indexreg:tregister;scale:byte;getoffset,forceref:boolean); procedure loadref(opidx:longint;const r:treference); procedure loadreg(opidx:longint;r:tregister); procedure loadoper(opidx:longint;o:toper); virtual; procedure clearop(opidx:longint); virtual; procedure freeop(opidx:longint); { register allocator } function is_same_reg_move(regtype: Tregistertype):boolean;virtual; function spilling_get_operation_type(opnr: longint): topertype;virtual; function spilling_get_operation_type_ref(opnr: longint; reg: tregister): topertype;virtual; function Pass1(objdata:TObjData):longint;virtual; procedure Pass2(objdata:TObjData);virtual; procedure resetpass1; virtual; procedure resetpass2; virtual; end; tai_cpu_class = class of tai_cpu_abstract; { Buffer type used for alignment } tfillbuffer = array[0..63] of char; { alignment for operator } tai_align_abstract = class(tai) aligntype : byte; { 1 = no align, 2 = word align, 4 = dword align } fillsize : byte; { real size to fill } fillop : byte; { value to fill with - optional } use_op : boolean; constructor Create(b:byte);virtual; constructor Create_op(b: byte; _op: byte);virtual; constructor Create_zeros(b:byte); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; function calculatefillbuf(var buf : tfillbuffer;executable : boolean):pchar;virtual; end; tai_align_class = class of tai_align_abstract; tai_varloc = class(tai) newlocation, newlocationhi : tregister; varsym : tsym; constructor create(sym : tsym;loc : tregister); constructor create64(sym : tsym;loc,lochi : tregister); {$ifdef cpu64bitalu} constructor create128(sym : tsym;loc,lochi : tregister); {$endif cpu64bitalu} constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure buildderefimpl;override; procedure derefimpl;override; end; TSehDirectiveDatatype=(sd_none,sd_string,sd_reg,sd_offset,sd_regoffset); TSehDirectiveData=record case typ: TSehDirectiveDatatype of sd_none: (); sd_string: (name:pshortstring;flags:byte); sd_reg,sd_offset,sd_regoffset: (reg:TRegister;offset:dword); end; tai_seh_directive = class(tai) kind: TAsmSehDirective; data: TSehDirectiveData; constructor create(_kind:TAsmSehDirective); constructor create_name(_kind:TAsmSehDirective;const _name: string); constructor create_reg(_kind:TAsmSehDirective;r:TRegister); constructor create_offset(_kind:TAsmSehDirective;ofs:dword); constructor create_reg_offset(_kind:TAsmSehDirective;r:TRegister;ofs:dword); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; destructor destroy;override; procedure ppuwrite(ppufile:tcompilerppufile);override; procedure generate_code(objdata:TObjData);virtual; property datatype: TSehDirectiveDatatype read data.typ; end; tai_seh_directive_class=class of tai_seh_directive; {$ifdef JVM} { JVM variable live range description } tai_jvar = class(tai) stackslot: longint; desc: pshortstring; startlab,stoplab: tasmsymbol; constructor Create(_stackslot: longint; const _desc: shortstring; _startlab, _stoplab: TAsmSymbol); constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; destructor destroy;override; end; tai_jvar_class = class of tai_jvar; { JVM exception catch description } tai_jcatch = class(tai) name: pshortstring; startlab,stoplab,handlerlab: tasmsymbol; constructor Create(const _name: shortstring; _startlab, _stoplab, _handlerlab: TAsmSymbol); destructor destroy;override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; tai_jcatch_class = class of tai_jcatch; {$endif JVM} tai_symbolpair = class(tai) kind: TSymbolPairKind; sym, value: pshortstring; constructor create(akind: TSymbolPairKind; const asym, avalue: string); destructor destroy;override; constructor ppuload(t:taitype;ppufile:tcompilerppufile);override; procedure ppuwrite(ppufile:tcompilerppufile);override; end; var { array with all class types for tais } aiclass : taiclassarray; { target specific tais, possibly overwritten in target specific aasmcpu } cai_align : tai_align_class = tai_align_abstract; cai_cpu : tai_cpu_class = tai_cpu_abstract; cai_seh_directive: tai_seh_directive_class = tai_seh_directive; { hook to notify uses of registers } add_reg_instruction_hook : tadd_reg_instruction_proc; procedure maybe_new_object_file(list:TAsmList); procedure new_section(list:TAsmList;Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default); function ppuloadai(ppufile:tcompilerppufile):tai; procedure ppuwriteai(ppufile:tcompilerppufile;n:tai); implementation uses SysUtils, verbose, globals; const pputaimarker = 254; {**************************************************************************** Helpers ****************************************************************************} procedure maybe_new_object_file(list:TAsmList); begin if create_smartlink_library then list.concat(tai_cutobject.create); end; procedure new_section(list:TAsmList;Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default); begin list.concat(tai_section.create(Asectype,Aname,Aalign,Asecorder)); inc(list.section_count); list.concat(cai_align.create(Aalign)); end; function ppuloadai(ppufile:tcompilerppufile):tai; var b : byte; t : taitype; begin { marker } b:=ppufile.getbyte; if b<>pputaimarker then internalerror(200208181); { load nodetype } t:=taitype(ppufile.getbyte); if t<>ait_none then begin if t>high(taitype) then internalerror(200208182); if not assigned(aiclass[t]) then internalerror(200208183); {writeln('taiload: ',taitypestr[t]);} { generate tai of the correct class } ppuloadai:=aiclass[t].ppuload(t,ppufile); end else ppuloadai:=nil; end; procedure ppuwriteai(ppufile:tcompilerppufile;n:tai); begin { marker, read by ppuloadnode } ppufile.putbyte(pputaimarker); if assigned(n) then begin { type, read by ppuloadnode } ppufile.putbyte(byte(n.typ)); {writeln('taiwrite: ',taitypestr[n.typ]);} n.ppuwrite(ppufile); end else ppufile.putbyte(byte(ait_none)); end; constructor tai_symbolpair.create(akind: TSymbolPairKind; const asym, avalue: string); begin inherited create; kind:=akind; typ:=ait_symbolpair; sym:=stringdup(asym); value:=stringdup(avalue); end; destructor tai_symbolpair.destroy; begin stringdispose(sym); stringdispose(value); inherited destroy; end; constructor tai_symbolpair.ppuload(t: taitype; ppufile: tcompilerppufile); begin inherited ppuload(t,ppufile); kind:=TSymbolPairKind(ppufile.getbyte);; sym:=ppufile.getpshortstring; value:=ppufile.getpshortstring; end; procedure tai_symbolpair.ppuwrite(ppufile: tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(kind)); ppufile.putstring(sym^); ppufile.putstring(value^); end; constructor tai_varloc.create(sym: tsym; loc: tregister); begin inherited Create; typ:=ait_varloc; newlocation:=loc; newlocationhi:=NR_NO; varsym:=sym; end; constructor tai_varloc.create64(sym: tsym; loc, lochi: tregister); begin inherited Create; typ:=ait_varloc; newlocation:=loc; newlocationhi:=lochi; varsym:=sym; end; {$ifdef cpu64bitalu} constructor tai_varloc.create128(sym: tsym; loc, lochi: tregister); begin inherited Create; typ:=ait_varloc; newlocation:=loc; newlocationhi:=lochi; varsym:=sym; end; {$endif cpu64bitalu} constructor tai_varloc.ppuload(t: taitype; ppufile: tcompilerppufile); begin inherited ppuload(t, ppufile); end; procedure tai_varloc.ppuwrite(ppufile: tcompilerppufile); begin inherited ppuwrite(ppufile); end; procedure tai_varloc.buildderefimpl; begin inherited buildderefimpl; end; procedure tai_varloc.derefimpl; begin inherited derefimpl; end; {**************************************************************************** TAI ****************************************************************************} constructor tai.Create; begin {$ifndef NOOPT} optinfo:=nil; {$endif NOOPT} end; constructor tai.ppuload(t:taitype;ppufile:tcompilerppufile); begin typ:=t; {$ifndef NOOPT} optinfo:=nil; {$endif} end; procedure tai.ppuwrite(ppufile:tcompilerppufile); begin end; procedure tai.buildderefimpl; begin end; procedure tai.derefimpl; begin end; {**************************************************************************** TAILINEINFO ****************************************************************************} constructor tailineinfo.create; begin inherited create; fileinfo:=current_filepos; end; constructor tailineinfo.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); ppufile.getposinfo(fileinfo); end; procedure tailineinfo.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putposinfo(fileinfo); end; {**************************************************************************** TAI_SIMPLE ****************************************************************************} constructor tai_simple.create(_typ : taitype); begin inherited create; typ:=_typ; end; {**************************************************************************** TAI_SECTION ****************************************************************************} constructor tai_section.Create(Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default); begin inherited Create; typ:=ait_section; sectype:=asectype; secalign:=Aalign; secorder:=Asecorder; name:=stringdup(Aname); sec:=nil; end; constructor tai_section.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); sectype:=TAsmSectiontype(ppufile.getbyte); secalign:=ppufile.getbyte; name:=ppufile.getpshortstring; sec:=nil; end; destructor tai_section.Destroy; begin stringdispose(name); end; procedure tai_section.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(sectype)); ppufile.putbyte(secalign); ppufile.putstring(name^); end; {**************************************************************************** TAI_DATABLOCK ****************************************************************************} constructor tai_datablock.Create(const _name : string;_size : asizeint; def: tdef); begin inherited Create; typ:=ait_datablock; sym:=current_asmdata.DefineAsmSymbol(_name,AB_LOCAL,AT_DATA,def); { keep things aligned } if _size<=0 then _size:=sizeof(aint); size:=_size; is_global:=false; end; constructor tai_datablock.Create_global(const _name : string;_size : asizeint; def: tdef); begin inherited Create; typ:=ait_datablock; sym:=current_asmdata.DefineAsmSymbol(_name,AB_GLOBAL,AT_DATA,def); { keep things aligned } if _size<=0 then _size:=sizeof(aint); size:=_size; is_global:=true; end; constructor tai_datablock.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited Create; sym:=ppufile.getasmsymbol; size:=ppufile.getaint; is_global:=boolean(ppufile.getbyte); end; procedure tai_datablock.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putasmsymbol(sym); ppufile.putaint(size); ppufile.putbyte(byte(is_global)); end; procedure tai_datablock.derefimpl; begin end; {**************************************************************************** TAI_SYMBOL ****************************************************************************} constructor tai_symbol.Create(_sym:tasmsymbol;siz:longint); begin inherited Create; typ:=ait_symbol; sym:=_sym; size:=siz; { don't redefine global/external symbols as local, as code to access such symbols is different on some platforms } if not(sym.bind in [AB_NONE,AB_LOCAL]) then internalerror(2013081601); sym.bind:=AB_LOCAL; is_global:=false; end; constructor tai_symbol.Create_global(_sym:tasmsymbol;siz:longint); begin inherited Create; typ:=ait_symbol; sym:=_sym; size:=siz; { don't override PRIVATE_EXTERN with GLOBAL } if not(sym.bind in [AB_GLOBAL,AB_PRIVATE_EXTERN]) then sym.bind:=AB_GLOBAL; is_global:=true; end; constructor tai_symbol.Createname(const _name : string;_symtyp:Tasmsymtype;siz:longint;def:tdef); begin inherited Create; typ:=ait_symbol; sym:=current_asmdata.DefineAsmSymbol(_name,AB_LOCAL,_symtyp,def); size:=siz; is_global:=false; end; constructor tai_symbol.Createname_global(const _name : string;_symtyp:Tasmsymtype;siz:longint;def:tdef); begin inherited Create; typ:=ait_symbol; sym:=current_asmdata.DefineAsmSymbol(_name,AB_GLOBAL,_symtyp,def); size:=siz; is_global:=true; end; constructor tai_symbol.createname_global_value(const _name: string;_symtyp: tasmsymtype; siz: longint; val: ptruint;def:tdef); begin Createname_global(_name,_symtyp,siz,def); value:=val; has_value:=true; end; constructor tai_symbol.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); sym:=ppufile.getasmsymbol; size:=ppufile.getlongint; is_global:=boolean(ppufile.getbyte); end; procedure tai_symbol.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putasmsymbol(sym); ppufile.putlongint(size); ppufile.putbyte(byte(is_global)); end; procedure tai_symbol.derefimpl; begin end; {**************************************************************************** TAI_SYMBOL_END ****************************************************************************} constructor tai_symbol_end.Create(_sym:tasmsymbol); begin inherited Create; typ:=ait_symbol_end; sym:=_sym; end; constructor tai_symbol_end.Createname(const _name : string); begin inherited Create; typ:=ait_symbol_end; sym:=current_asmdata.GetAsmSymbol(_name); if not assigned(sym) then internalerror(2013080301); end; constructor tai_symbol_end.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); sym:=ppufile.getasmsymbol; end; procedure tai_symbol_end.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putasmsymbol(sym); end; procedure tai_symbol_end.derefimpl; begin end; {**************************************************************************** TAI_SYMBOL_END ****************************************************************************} constructor tai_directive.Create(_directive:TAsmDirective;const _name:ansistring); begin inherited Create; typ:=ait_directive; name:=_name; directive:=_directive; end; constructor tai_directive.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); name:=ppufile.getansistring; directive:=TAsmDirective(ppufile.getbyte); end; procedure tai_directive.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putansistring(name); ppufile.putbyte(byte(directive)); end; {**************************************************************************** TAI_CONST ****************************************************************************} constructor tai_const.Create(_typ:taiconst_type;_value : int64); begin inherited Create; typ:=ait_const; consttype:=_typ; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_128bit(_value : int64); begin inherited Create; typ:=ait_const; consttype:=aitconst_128bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_64bit(_value : int64); begin inherited Create; typ:=ait_const; consttype:=aitconst_64bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_32bit(_value : longint); begin inherited Create; typ:=ait_const; consttype:=aitconst_32bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_16bit(_value : word); begin inherited Create; typ:=ait_const; consttype:=aitconst_16bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_64bit_unaligned(_value : int64); begin inherited Create; typ:=ait_const; consttype:=aitconst_64bit_unaligned; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_32bit_unaligned(_value : longint); begin inherited Create; typ:=ait_const; consttype:=aitconst_32bit_unaligned; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_16bit_unaligned(_value : word); begin inherited Create; typ:=ait_const; consttype:=aitconst_16bit_unaligned; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_8bit(_value : byte); begin inherited Create; typ:=ait_const; consttype:=aitconst_8bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_char(size: integer; _value: dword); begin inherited Create; typ:=ait_const; case size of 1: begin consttype:=aitconst_8bit; value:=byte(_value) end; 2: begin consttype:=aitconst_16bit; value:=word(_value) end else InternalError(2010030701) end end; constructor tai_const.Create_sleb128bit(_value : int64); begin inherited Create; typ:=ait_const; consttype:=aitconst_sleb128bit; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_uleb128bit(_value : qword); begin inherited Create; typ:=ait_const; consttype:=aitconst_uleb128bit; value:=int64(_value); sym:=nil; endsym:=nil; end; constructor tai_const.Create_aint(_value : aint); begin inherited Create; typ:=ait_const; consttype:=aitconst_aint; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_sizeint(_value : asizeint); begin inherited Create; typ:=ait_const; consttype:=aitconst_sizeint; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_sizeint_unaligned(_value : asizeint); begin inherited Create; typ:=ait_const; consttype:=aitconst_sizeint_unaligned; value:=_value; sym:=nil; endsym:=nil; end; constructor tai_const.Create_type_sym(_typ:taiconst_type;_sym:tasmsymbol); begin inherited Create; typ:=ait_const; consttype:=_typ; sym:=_sym; endsym:=nil; value:=0; { update sym info } if assigned(sym) then sym.increfs; end; constructor tai_const.Create_sym(_sym:tasmsymbol); begin self.create_sym_offset(_sym,0); end; {$ifdef i8086} constructor tai_const.Create_sym_near(_sym: tasmsymbol); begin self.create_sym(_sym); consttype:=aitconst_ptr; end; constructor tai_const.Create_sym_far(_sym: tasmsymbol); begin self.create_sym(_sym); consttype:=aitconst_farptr; end; {$endif i8086} constructor tai_const.Create_sym_offset(_sym:tasmsymbol;ofs:asizeint); begin inherited Create; typ:=ait_const; {$ifdef i8086} if assigned(_sym) and (_sym.typ=AT_DATA) then begin if current_settings.x86memorymodel in x86_far_data_models then consttype:=aitconst_farptr else consttype:=aitconst_ptr; end else begin if current_settings.x86memorymodel in x86_far_code_models then consttype:=aitconst_farptr else consttype:=aitconst_ptr; end; {$else i8086} {$ifdef avr} if assigned(_sym) and (_sym.typ=AT_FUNCTION) then consttype:=aitconst_gs else {$endif avr} consttype:=aitconst_ptr; {$endif i8086} { sym is allowed to be nil, this is used to write nil pointers } sym:=_sym; endsym:=nil; { store the original offset in symofs so that we can recalculate the value field in the assembler } symofs:=ofs; value:=ofs; { update sym info } if assigned(sym) then sym.increfs; end; constructor tai_const.Create_type_sym_offset(_typ : taiconst_type;_sym : tasmsymbol; ofs : asizeint); begin inherited Create; typ:=ait_const; consttype:=_typ; { sym is allowed to be nil, this is used to write nil pointers } sym:=_sym; endsym:=nil; { store the original offset in symofs so that we can recalculate the value field in the assembler } symofs:=ofs; value:=ofs; { update sym info } if assigned(sym) then sym.increfs; end; constructor tai_const.Create_rel_sym(_typ:taiconst_type;_sym,_endsym:tasmsymbol); begin self.create_sym_offset(_sym,0); consttype:=_typ; endsym:=_endsym; endsym.increfs; end; constructor tai_const.Create_rel_sym_offset(_typ: taiconst_type; _sym,_endsym: tasmsymbol; _ofs: int64); begin self.create_sym_offset(_sym,_ofs); consttype:=_typ; endsym:=_endsym; endsym.increfs; end; constructor tai_const.Create_rva_sym(_sym:tasmsymbol); begin self.create_sym_offset(_sym,0); consttype:=aitconst_rva_symbol; end; constructor tai_const.Createname(const name:string;ofs:asizeint); begin self.Createname(name,AT_NONE,ofs); end; constructor tai_const.Createname(const name:string;_symtyp:Tasmsymtype;ofs:asizeint); begin self.create_sym_offset(current_asmdata.RefAsmSymbol(name,_symtyp),ofs); end; constructor tai_const.Create_type_name(_typ:taiconst_type;const name:string;ofs:asizeint); begin self.Create_type_name(_typ,name,AT_NONE,ofs); end; constructor tai_const.Create_type_name(_typ:taiconst_type;const name:string;_symtyp:Tasmsymtype;ofs:asizeint); begin self.create_sym_offset(current_asmdata.RefAsmSymbol(name,_symtyp),ofs); consttype:=_typ; end; constructor tai_const.Create_nil_codeptr; begin self.Create_int_codeptr(0); end; constructor tai_const.Create_nil_codeptr_unaligned; begin self.Create_int_codeptr_unaligned(0); end; constructor tai_const.Create_nil_dataptr; begin self.Create_int_dataptr(0); end; constructor tai_const.Create_nil_dataptr_unaligned; begin self.Create_int_dataptr_unaligned(0); end; constructor tai_const.Create_int_codeptr(_value: int64); begin inherited Create; typ:=ait_const; {$ifdef i8086} if current_settings.x86memorymodel in x86_far_code_models then consttype:=aitconst_farptr else {$endif i8086} {$ifdef avr} consttype:=aitconst_gs; {$else avr} consttype:=aitconst_ptr; {$endif avr} sym:=nil; endsym:=nil; symofs:=0; value:=_value; end; constructor tai_const.Create_int_codeptr_unaligned(_value: int64); begin inherited Create; typ:=ait_const; {$ifdef i8086} if current_settings.x86memorymodel in x86_far_code_models then consttype:=aitconst_farptr else {$endif i8086} {$ifdef avr} consttype:=aitconst_gs; {$else avr} consttype:=aitconst_ptr_unaligned; {$endif avr} sym:=nil; endsym:=nil; symofs:=0; value:=_value; end; constructor tai_const.Create_int_dataptr(_value: int64); begin inherited Create; typ:=ait_const; {$ifdef i8086} if current_settings.x86memorymodel in x86_far_data_models then consttype:=aitconst_farptr else {$endif i8086} consttype:=aitconst_ptr; sym:=nil; endsym:=nil; symofs:=0; value:=_value; end; constructor tai_const.Create_int_dataptr_unaligned(_value: int64); begin inherited Create; typ:=ait_const; {$ifdef i8086} if current_settings.x86memorymodel in x86_far_data_models then consttype:=aitconst_farptr else {$endif i8086} consttype:=aitconst_ptr_unaligned; sym:=nil; endsym:=nil; symofs:=0; value:=_value; end; {$ifdef i8086} constructor tai_const.Create_seg_name(const name:string); begin self.Createname(name,0); self.consttype:=aitconst_seg; end; constructor tai_const.Create_dgroup; begin self.Create_16bit(0); self.consttype:=aitconst_dgroup; end; constructor tai_const.Create_fardataseg; begin self.Create_16bit(0); self.consttype:=aitconst_fardataseg; end; {$endif i8086} constructor tai_const.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); consttype:=taiconst_type(ppufile.getbyte); sym:=ppufile.getasmsymbol; endsym:=ppufile.getasmsymbol; value:=ppufile.getint64; end; procedure tai_const.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(consttype)); ppufile.putasmsymbol(sym); ppufile.putasmsymbol(endsym); ppufile.putint64(value); end; procedure tai_const.derefimpl; begin end; function tai_const.getcopy:tlinkedlistitem; begin getcopy:=inherited getcopy; { we need to increase the reference number } if assigned(sym) then sym.increfs; if assigned(endsym) then endsym.increfs; end; function tai_const.size:longint; begin case consttype of aitconst_8bit : result:=1; aitconst_16bit,aitconst_16bit_unaligned : result:=2; aitconst_32bit,aitconst_darwin_dwarf_delta32, aitconst_32bit_unaligned: result:=4; aitconst_64bit,aitconst_darwin_dwarf_delta64, aitconst_64bit_unaligned: result:=8; aitconst_secrel32_symbol, aitconst_rva_symbol : if target_info.system in [system_x86_64_win64,system_x86_64_uefi] then result:=sizeof(longint) else result:=sizeof(pint); aitconst_uleb128bit : result:=LengthUleb128(qword(value)); aitconst_sleb128bit : result:=LengthSleb128(value); aitconst_half16bit, aitconst_gs: result:=2; aitconst_farptr: result:=4; aitconst_dgroup, aitconst_fardataseg, aitconst_seg: result:=2; aitconst_got: result:=sizeof(pint); aitconst_gotoff_symbol: result:=4; else internalerror(200603253); end; end; {**************************************************************************** TAI_realconst ****************************************************************************} constructor tai_realconst.create_s32real(val: ts32real); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s32bit; savesize:=4; value.s32val:=val; end; constructor tai_realconst.create_s64real(val: ts64real); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s64bit; savesize:=8; value.s64val:=val; end; {$ifdef ARM} constructor tai_realconst.create_s64real_hiloswapped(val : ts64real); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s64bit; value.s64val:=val; savesize:=8; formatoptions:=fo_hiloswapped; end; {$endif ARM} constructor tai_realconst.create_s80real(val: ts80real; _savesize: byte); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s80bit; savesize:=_savesize; value.s80val:=val; end; constructor tai_realconst.create_s128real(val: ts128real); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s128bit; savesize:=16; value.s128val:=val; end; constructor tai_realconst.create_s64compreal(val: ts64comp); begin inherited create; typ:=ait_realconst; realtyp:=aitrealconst_s64comp; savesize:=8; value.s64compval:=val; end; constructor tai_realconst.ppuload(t: taitype; ppufile: tcompilerppufile); begin inherited; realtyp:=tairealconsttype(ppufile.getbyte); {$ifdef ARM} formatoptions:=tformatoptions(ppufile.getbyte); {$endif ARM} case realtyp of aitrealconst_s32bit: value.s32val:=ppufile.getreal; aitrealconst_s64bit: value.s64val:=ppufile.getreal; aitrealconst_s80bit: value.s80val:=ppufile.getreal; aitrealconst_s128bit: value.s128val:=ppufile.getreal; aitrealconst_s64comp: value.s64compval:=comp(ppufile.getint64); else internalerror(2014050602); end; end; procedure tai_realconst.ppuwrite(ppufile: tcompilerppufile); var c: comp; begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(realtyp)); {$ifdef ARM} ppufile.putbyte(byte(formatoptions)); {$endif ARM} case realtyp of aitrealconst_s32bit: ppufile.putreal(value.s32val); aitrealconst_s64bit: ppufile.putreal(value.s64val); aitrealconst_s80bit: ppufile.putreal(value.s80val); aitrealconst_s128bit: ppufile.putreal(value.s128val); aitrealconst_s64comp: begin c:=comp(value.s64compval); ppufile.putint64(int64(c)); end else internalerror(2014050601); end; end; function tai_realconst.getcopy: tlinkedlistitem; begin result:=inherited getcopy; tai_realconst(result).value:=value; tai_realconst(result).realtyp:=realtyp; tai_realconst(result).savesize:=savesize; {$ifdef ARM} tai_realconst(result).formatoptions:=formatoptions; {$endif ARM} end; function tai_realconst.datasize: word; begin case realtyp of aitrealconst_s32bit: result:=4; aitrealconst_s64bit, aitrealconst_s64comp: result:=8; aitrealconst_s80bit: result:=10; aitrealconst_s128bit: result:=16; else internalerror(2014050603); end; end; {**************************************************************************** TAI_STRING ****************************************************************************} constructor tai_string.Create(const _str : string); begin inherited Create; typ:=ait_string; len:=length(_str); getmem(str,len+1); move(_str[1],str^,len); str[len]:=#0; end; constructor tai_string.Create_pchar(_str : pchar;length : longint); begin inherited Create; typ:=ait_string; str:=_str; len:=length; end; destructor tai_string.destroy; begin if str<>nil then freemem(str); inherited Destroy; end; constructor tai_string.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); len:=ppufile.getlongint; getmem(str,len+1); ppufile.getdata(str^,len); str[len]:=#0 end; procedure tai_string.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putlongint(len); ppufile.putdata(str^,len); end; function tai_string.getcopy : tlinkedlistitem; var p : tlinkedlistitem; begin p:=inherited getcopy; getmem(tai_string(p).str,len); move(str^,tai_string(p).str^,len); getcopy:=p; end; {**************************************************************************** TAI_LABEL ****************************************************************************} constructor tai_label.Create(_labsym : tasmlabel); begin inherited Create; typ:=ait_label; labsym:=_labsym; labsym.is_set:=true; end; constructor tai_label.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); labsym:=tasmlabel(ppufile.getasmsymbol); ppufile.getbyte; { was is_global flag, now unused } end; procedure tai_label.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putasmsymbol(labsym); ppufile.putbyte(0); { was is_global flag, now unused } end; procedure tai_label.derefimpl; begin labsym.is_set:=true; end; {**************************************************************************** tai_comment comment to be inserted in the assembler file ****************************************************************************} constructor tai_comment.Create(_str : pchar); begin inherited Create; typ:=ait_comment; str:=_str; end; destructor tai_comment.destroy; begin freemem(str); inherited Destroy; end; constructor tai_comment.ppuload(t:taitype;ppufile:tcompilerppufile); var len : longint; begin inherited ppuload(t,ppufile); len:=ppufile.getlongint; getmem(str,len+1); ppufile.getdata(str^,len); str[len]:=#0; end; procedure tai_comment.ppuwrite(ppufile:tcompilerppufile); var len : longint; begin inherited ppuwrite(ppufile); len:=strlen(str); ppufile.putlongint(len); ppufile.putdata(str^,len); end; function tai_comment.getcopy : tlinkedlistitem; var p : tlinkedlistitem; begin p:=inherited getcopy; getmem(tai_comment(p).str,strlen(str)+1); move(str^,tai_comment(p).str^,strlen(str)+1); getcopy:=p; end; {**************************************************************************** TAI_STABS ****************************************************************************} constructor tai_stab.create(_stabtype:TStabType;_str : pchar); begin inherited create; typ:=ait_stab; str:=_str; stabtype:=_stabtype; end; constructor tai_stab.create_str(_stabtype:TStabType;const s:string); begin self.create(_stabtype,strpnew(s)); end; constructor tai_stab.create_ansistr(_stabtype:TStabType;const s:ansistring); begin inherited create; typ:=ait_stab; stabtype:=_stabtype; getmem(str,length(s)+1); if length(s)>0 then move(s[1],str^,length(s)+1) else str^:=#0; end; destructor tai_stab.destroy; begin freemem(str); inherited destroy; end; {**************************************************************************** TAI_FORCE_LINE ****************************************************************************} constructor tai_force_line.create; begin inherited create; typ:=ait_force_line; end; {**************************************************************************** TAI_FUNCTION_NAME ****************************************************************************} constructor tai_function_name.create(const s:string); begin inherited create; typ:=ait_function_name; funcname:=stringdup(s); end; destructor tai_function_name.destroy; begin stringdispose(funcname); inherited destroy; end; {**************************************************************************** TAI_CUTOBJECT ****************************************************************************} constructor tai_cutobject.Create; begin inherited Create; typ:=ait_cutobject; place:=cut_normal; end; constructor tai_cutobject.Create_begin; begin inherited Create; typ:=ait_cutobject; place:=cut_begin; end; constructor tai_cutobject.Create_end; begin inherited Create; typ:=ait_cutobject; place:=cut_end; end; constructor tai_cutobject.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); place:=TCutPlace(ppufile.getbyte); end; procedure tai_cutobject.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(place)); end; {**************************************************************************** Tai_Marker ****************************************************************************} constructor Tai_Marker.Create(_Kind: TAsmMarker); begin Inherited Create; typ := ait_marker; Kind := _Kind; end; constructor Tai_Marker.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); kind:=TAsmMarker(ppufile.getbyte); end; procedure Tai_Marker.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(byte(kind)); end; {***************************************************************************** tai_tempalloc *****************************************************************************} constructor tai_tempalloc.alloc(pos,size:longint); begin inherited Create; typ:=ait_tempalloc; allocation:=true; temppos:=pos; tempsize:=size; {$ifdef EXTDEBUG} problem:=nil; {$endif EXTDEBUG} end; destructor tai_tempalloc.destroy; begin {$ifdef EXTDEBUG} stringdispose(problem); {$endif EXTDEBUG} inherited destroy; end; constructor tai_tempalloc.dealloc(pos,size:longint); begin inherited Create; typ:=ait_tempalloc; allocation:=false; temppos:=pos; tempsize:=size; {$ifdef EXTDEBUG} problem:=nil; {$endif EXTDEBUG} end; {$ifdef EXTDEBUG} constructor tai_tempalloc.allocinfo(pos,size:longint;const st:string); begin inherited Create; typ:=ait_tempalloc; allocation:=false; temppos:=pos; tempsize:=size; problem:=stringdup(st); end; {$endif EXTDEBUG} constructor tai_tempalloc.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); temppos:=ppufile.getlongint; tempsize:=ppufile.getlongint; allocation:=boolean(ppufile.getbyte); {$ifdef EXTDEBUG} problem:=nil; {$endif EXTDEBUG} end; procedure tai_tempalloc.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putlongint(temppos); ppufile.putlongint(tempsize); ppufile.putbyte(byte(allocation)); end; {***************************************************************************** tai_regalloc *****************************************************************************} constructor tai_regalloc.alloc(r : tregister;ainstr:tai); begin inherited create; typ:=ait_regalloc; ratype:=ra_alloc; reg:=r; { ainstr must be an instruction } if assigned(ainstr) and (ainstr.typ<>ait_instruction) then internalerror(200411011); instr:=ainstr; end; constructor tai_regalloc.dealloc(r : tregister;ainstr:tai); begin inherited create; typ:=ait_regalloc; ratype:=ra_dealloc; reg:=r; { ainstr must be an instruction } if assigned(ainstr) and (ainstr.typ<>ait_instruction) then internalerror(200411012); instr:=ainstr; end; constructor tai_regalloc.sync(r : tregister); begin inherited create; typ:=ait_regalloc; ratype:=ra_sync; reg:=r; end; constructor tai_regalloc.resize(r : tregister); begin inherited create; typ:=ait_regalloc; ratype:=ra_resize; reg:=r; end; constructor tai_regalloc.markused(r : tregister); begin inherited create; typ:=ait_regalloc; ratype:=ra_markused; reg:=r; end; constructor tai_regalloc.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); ppufile.getdata(reg,sizeof(Tregister)); ratype:=tregalloctype(ppufile.getbyte); keep:=boolean(ppufile.getbyte); end; procedure tai_regalloc.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putdata(reg,sizeof(Tregister)); ppufile.putbyte(byte(ratype)); ppufile.putbyte(byte(keep)); end; {***************************************************************************** TaiInstruction *****************************************************************************} constructor tai_cpu_abstract.Create(op : tasmop); begin inherited create; typ:=ait_instruction; is_jmp:=false; opcode:=op; ops:=0; end; destructor tai_cpu_abstract.Destroy; var i : integer; begin for i:=0 to opercnt-1 do freeop(i); inherited destroy; end; { --------------------------------------------------------------------- Loading of operands. ---------------------------------------------------------------------} procedure tai_cpu_abstract.allocate_oper(opers:longint); begin while (opers>opercnt) do begin new(oper[opercnt]); fillchar(oper[opercnt]^,sizeof(toper),0); inc(opercnt); end; end; procedure tai_cpu_abstract.loadconst(opidx:longint;l:aint); begin allocate_oper(opidx+1); with oper[opidx]^ do begin if typ<>top_const then clearop(opidx); val:=l; typ:=top_const; end; end; procedure tai_cpu_abstract.loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint); var r : treference; begin reference_reset_symbol(r,s,sofs,1,[]); r.refaddr:=addr_full; loadref(opidx,r); end; procedure tai_cpu_abstract.loadlocal(opidx:longint;s:pointer;sofs:longint;indexreg:tregister;scale:byte;getoffset,forceref:boolean); begin if not assigned(s) then internalerror(200204251); allocate_oper(opidx+1); with oper[opidx]^ do begin if typ<>top_local then begin clearop(opidx); new(localoper); end; with oper[opidx]^.localoper^ do begin localsym:=s; localsymofs:=sofs; localindexreg:=indexreg; localscale:=scale; localgetoffset:=getoffset; localforceref:=forceref; end; typ:=top_local; end; end; procedure tai_cpu_abstract.loadref(opidx:longint;const r:treference); begin allocate_oper(opidx+1); with oper[opidx]^ do begin if typ<>top_ref then begin clearop(opidx); new(ref); end; ref^:=r; {$ifdef x86} { We allow this exception for x86, since overloading this would be too much of a a speed penalty} if (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then segprefix:=ref^.segment; {$endif} {$ifndef llvm} if (cs_create_pic in current_settings.moduleswitches) and assigned(r.symbol) and not assigned(r.relsymbol) and (r.refaddr=addr_no) {$ifdef ARM} and not(r.base=NR_R15) {$endif ARM} {$ifdef aarch64} and not(r.refaddr in [addr_full,addr_gotpageoffset,addr_gotpage]) {$endif aarch64} then internalerror(200502052); {$endif not llvm} typ:=top_ref; if assigned(add_reg_instruction_hook) then begin add_reg_instruction_hook(self,ref^.base); add_reg_instruction_hook(self,ref^.index); end; { mark symbol as used } if assigned(ref^.symbol) then ref^.symbol.increfs; if assigned(ref^.relsymbol) then ref^.relsymbol.increfs; end; end; procedure tai_cpu_abstract.loadreg(opidx:longint;r:tregister); begin allocate_oper(opidx+1); with oper[opidx]^ do begin if typ<>top_reg then clearop(opidx); reg:=r; typ:=top_reg; end; if assigned(add_reg_instruction_hook) then add_reg_instruction_hook(self,r); {$ifdef ARM} { R15 is the PC on the ARM thus moves to R15 are jumps. Due to speed considerations we don't use a virtual overridden method here. Because the pc/r15 isn't handled by the reg. allocator this should never cause problems with iregs getting r15. } is_jmp:=(opcode=A_MOV) and (opidx=0) and (r=NR_R15); {$endif ARM} end; procedure tai_cpu_abstract.loadoper(opidx:longint;o:toper); begin allocate_oper(opidx+1); clearop(opidx); oper[opidx]^:=o; { copy also the reference } with oper[opidx]^ do begin case typ of top_reg: begin if assigned(add_reg_instruction_hook) then add_reg_instruction_hook(self,reg); end; top_ref: begin new(ref); ref^:=o.ref^; {$ifdef x86} if (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then segprefix:=ref^.segment; {$endif x86} if assigned(add_reg_instruction_hook) then begin add_reg_instruction_hook(self,ref^.base); add_reg_instruction_hook(self,ref^.index); end; end; {$ifdef ARM} top_shifterop: begin new(shifterop); shifterop^:=o.shifterop^; if assigned(add_reg_instruction_hook) then add_reg_instruction_hook(self,shifterop^.rs); end; {$endif ARM} end; end; end; procedure tai_cpu_abstract.clearop(opidx:longint); begin with oper[opidx]^ do begin case typ of top_ref: dispose(ref); top_local: dispose(localoper); {$ifdef ARM} top_shifterop: dispose(shifterop); top_regset: dispose(regset); {$endif ARM} {$ifdef jvm} top_string: freemem(pcval); top_wstring: donewidestring(pwstrval); {$endif jvm} end; typ:=top_none; end; end; procedure tai_cpu_abstract.freeop(opidx:longint); begin clearop(opidx); dispose(oper[opidx]); end; { --------------------------------------------------------------------- Miscellaneous methods. ---------------------------------------------------------------------} procedure tai_cpu_abstract.SetCondition(const c:TAsmCond); begin condition:=c; end; Function tai_cpu_abstract.getcopy:TLinkedListItem; var i : longint; p : tai_cpu_abstract; begin p:=tai_cpu_abstract(inherited getcopy); { make a copy of the references } p.opercnt:=0; p.allocate_oper(ops); for i:=0 to ops-1 do begin p.oper[i]^:=oper[i]^; case oper[i]^.typ of top_local : begin new(p.oper[i]^.localoper); p.oper[i]^.localoper^:=oper[i]^.localoper^; end; top_ref : begin new(p.oper[i]^.ref); p.oper[i]^.ref^:=oper[i]^.ref^; end; {$ifdef ARM} top_shifterop: begin new(p.oper[i]^.shifterop); p.oper[i]^.shifterop^:=oper[i]^.shifterop^; end; {$endif ARM} end; end; getcopy:=p; end; function tai_cpu_abstract.is_same_reg_move(regtype: Tregistertype):boolean; begin { When the generic RA is used this needs to be overridden, we don't use virtual;abstract; to prevent a lot of warnings of unimplemented abstract methods when tai_cpu is created (PFV) } internalerror(2004040901); result:=false; end; function tai_cpu_abstract.spilling_get_operation_type(opnr: longint): topertype; begin internalerror(2004040902); result:=operand_readwrite; end; function tai_cpu_abstract.spilling_get_operation_type_ref(opnr: longint; reg: tregister): topertype; begin result := operand_read; end; constructor tai_cpu_abstract.ppuload(t:taitype;ppufile:tcompilerppufile); var i : integer; begin inherited ppuload(t,ppufile); { hopefully, we don't get problems with big/litte endian here when cross compiling :/ } ppufile.getdata(condition,sizeof(tasmcond)); allocate_oper(ppufile.getbyte); for i:=0 to ops-1 do ppuloadoper(ppufile,oper[i]^); opcode:=tasmop(ppufile.getword); {$ifdef x86} ppufile.getdata(segprefix,sizeof(Tregister)); {$endif x86} is_jmp:=boolean(ppufile.getbyte); end; procedure tai_cpu_abstract.ppuwrite(ppufile:tcompilerppufile); var i : integer; begin inherited ppuwrite(ppufile); ppufile.putdata(condition,sizeof(tasmcond)); ppufile.putbyte(ops); for i:=0 to ops-1 do ppuwriteoper(ppufile,oper[i]^); ppufile.putword(word(opcode)); {$ifdef x86} ppufile.putdata(segprefix,sizeof(Tregister)); {$endif x86} ppufile.putbyte(byte(is_jmp)); end; procedure tai_cpu_abstract.buildderefimpl; var i : integer; begin for i:=0 to ops-1 do ppubuildderefimploper(oper[i]^); end; procedure tai_cpu_abstract.derefimpl; var i : integer; begin for i:=0 to ops-1 do ppuderefoper(oper[i]^); end; procedure tai_cpu_abstract.resetpass1; begin end; procedure tai_cpu_abstract.resetpass2; begin end; function tai_cpu_abstract.Pass1(objdata:TObjData):longint; begin result:=0; end; procedure tai_cpu_abstract.Pass2(objdata:TObjData); begin end; procedure tai_cpu_abstract.ppuloadoper(ppufile:tcompilerppufile;var o:toper); begin o.typ:=toptype(ppufile.getbyte); o.ot:=ppufile.getlongint; case o.typ of top_reg : ppufile.getdata(o.reg,sizeof(Tregister)); top_ref : begin new(o.ref); {$ifdef x86} ppufile.getdata(o.ref^.segment,sizeof(Tregister)); {$endif x86} ppufile.getdata(o.ref^.base,sizeof(Tregister)); ppufile.getdata(o.ref^.index,sizeof(Tregister)); ppufile.getdata(o.ref^.refaddr,sizeof(o.ref^.refaddr)); o.ref^.scalefactor:=ppufile.getbyte; o.ref^.offset:=ppufile.getaint; o.ref^.symbol:=ppufile.getasmsymbol; o.ref^.relsymbol:=ppufile.getasmsymbol; end; top_const : o.val:=ppufile.getaint; top_local : begin new(o.localoper); with o.localoper^ do begin ppufile.getderef(localsymderef); localsymofs:=ppufile.getaint; localindexreg:=tregister(ppufile.getlongint); localscale:=ppufile.getbyte; localgetoffset:=(ppufile.getbyte<>0); end; end; else internalerror(2007010210); end; end; procedure tai_cpu_abstract.ppuwriteoper(ppufile:tcompilerppufile;const o:toper); begin ppufile.putbyte(byte(o.typ)); ppufile.putlongint(o.ot); case o.typ of top_reg : ppufile.putdata(o.reg,sizeof(Tregister)); top_ref : begin {$ifdef x86} ppufile.putdata(o.ref^.segment,sizeof(Tregister)); {$endif x86} ppufile.putdata(o.ref^.base,sizeof(Tregister)); ppufile.putdata(o.ref^.index,sizeof(Tregister)); ppufile.putdata(o.ref^.refaddr,sizeof(o.ref^.refaddr)); ppufile.putbyte(o.ref^.scalefactor); ppufile.putaint(o.ref^.offset); ppufile.putasmsymbol(o.ref^.symbol); ppufile.putasmsymbol(o.ref^.relsymbol); end; top_const : ppufile.putaint(o.val); top_local : begin with o.localoper^ do begin ppufile.putderef(localsymderef); ppufile.putaint(localsymofs); ppufile.putlongint(longint(localindexreg)); ppufile.putbyte(localscale); ppufile.putbyte(byte(localgetoffset)); end; end; else internalerror(2007010211); end; end; {**************************************************************************** tai_align_abstract ****************************************************************************} constructor tai_align_abstract.Create(b: byte); begin inherited Create; typ:=ait_align; {$ifdef EXTDEBUG} if upper(classname)='TAI_ALIGN_ABSTRACT' then internalerror(200709191); {$endif EXTDEBUG} if b in [1,2,4,8,16,32,64] then aligntype := b else aligntype := 1; fillsize:=0; fillop:=0; use_op:=false; end; constructor tai_align_abstract.Create_op(b: byte; _op: byte); begin inherited Create; typ:=ait_align; if b in [1,2,4,8,16,32] then aligntype := b else aligntype := 1; fillsize:=0; fillop:=_op; use_op:=true; end; constructor tai_align_abstract.Create_zeros(b: byte); begin inherited Create; typ:=ait_align; if b in [1,2,4,8,16,32] then aligntype := b else aligntype := 1; use_op:=true; fillsize:=0; fillop:=0; end; function tai_align_abstract.calculatefillbuf(var buf : tfillbuffer;executable : boolean):pchar; begin if fillsize>sizeof(buf) then internalerror(200404293); fillchar(buf,high(buf),fillop); calculatefillbuf:=pchar(@buf); end; constructor tai_align_abstract.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t,ppufile); aligntype:=ppufile.getbyte; fillsize:=0; fillop:=ppufile.getbyte; use_op:=boolean(ppufile.getbyte); end; procedure tai_align_abstract.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(aligntype); ppufile.putbyte(fillop); ppufile.putbyte(byte(use_op)); end; {**************************************************************************** tai_seh_directive ****************************************************************************} const datatypemap: array[TAsmSehDirective] of TSehDirectiveDatatype=( sd_string, { proc } sd_none, { endproc } sd_none, { endprologue } sd_string, { handler } sd_none, { handlerdata } sd_none,sd_none,sd_none, { eh, 32, no32 } sd_regoffset, { setframe } sd_offset, { stackalloc } sd_reg, { pushreg } sd_regoffset, { savereg } sd_regoffset, { savexmm } sd_none { pushframe } ); constructor tai_seh_directive.create(_kind:TAsmSehDirective); begin inherited Create; typ:=ait_seh_directive; kind:=_kind; data.typ:=datatypemap[_kind]; end; constructor tai_seh_directive.create_name(_kind:TAsmSehDirective;const _name:string); begin create(_kind); data.name:=stringdup(_name); end; constructor tai_seh_directive.create_reg(_kind:TAsmSehDirective;r:TRegister); begin create(_kind); data.reg:=r; end; constructor tai_seh_directive.create_offset(_kind:TAsmSehDirective;ofs:dword); begin create(_kind); data.offset:=ofs; end; constructor tai_seh_directive.create_reg_offset(_kind:TAsmSehDirective; r:TRegister;ofs:dword); begin create(_kind); data.offset:=ofs; data.reg:=r; end; constructor tai_seh_directive.ppuload(t:taitype;ppufile:tcompilerppufile); begin inherited ppuload(t, ppufile); kind:=TAsmSehDirective(ppufile.getbyte); data.typ:=datatypemap[kind]; case data.typ of sd_none: ; sd_string: begin data.name:=ppufile.getpshortstring; data.flags:=ppufile.getbyte; end; sd_reg,sd_offset,sd_regoffset: begin ppufile.getdata(data.reg,sizeof(TRegister)); data.offset:=ppufile.getdword; end; else InternalError(2011091201); end; end; destructor tai_seh_directive.destroy; begin if data.typ=sd_string then stringdispose(data.name); inherited destroy; end; procedure tai_seh_directive.ppuwrite(ppufile:tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putbyte(ord(kind)); case data.typ of sd_none: ; sd_string: begin ppufile.putstring(data.name^); ppufile.putbyte(data.flags); end; sd_reg,sd_offset,sd_regoffset: begin ppufile.putdata(data.reg,sizeof(TRegister)); ppufile.putdword(data.offset); end; else InternalError(2011091202); end; end; procedure tai_seh_directive.generate_code(objdata:TObjData); begin end; {$ifdef JVM} {**************************************************************************** tai_jvar ****************************************************************************} constructor tai_jvar.Create(_stackslot: longint; const _desc: shortstring; _startlab, _stoplab: TAsmSymbol); begin Inherited create; typ:=ait_jvar; stackslot:=_stackslot; desc:=stringdup(_desc); startlab:=_startlab; stoplab:=_stoplab; end; constructor tai_jvar.ppuload(t: taitype; ppufile: tcompilerppufile); begin inherited ppuload(t, ppufile); stackslot:=ppufile.getlongint; desc:=ppufile.getpshortstring; startlab:=ppufile.getasmsymbol; stoplab:=ppufile.getasmsymbol; end; procedure tai_jvar.ppuwrite(ppufile: tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putlongint(stackslot); ppufile.putstring(desc^); ppufile.putasmsymbol(startlab); ppufile.putasmsymbol(stoplab); end; destructor tai_jvar.destroy; begin stringdispose(desc); inherited destroy; end; {**************************************************************************** tai_jcatch ****************************************************************************} constructor tai_jcatch.Create(const _name: shortstring; _startlab, _stoplab, _handlerlab: TAsmSymbol); begin Inherited create; typ:=ait_jcatch; name:=stringdup(_name); startlab:=_startlab; startlab.increfs; stoplab:=_stoplab; stoplab.increfs; handlerlab:=_handlerlab; handlerlab.increfs; end; destructor tai_jcatch.destroy; begin stringdispose(name); inherited destroy; end; constructor tai_jcatch.ppuload(t: taitype; ppufile: tcompilerppufile); begin inherited ppuload(t, ppufile); name:=ppufile.getpshortstring; startlab:=ppufile.getasmsymbol; startlab.increfs; stoplab:=ppufile.getasmsymbol; stoplab.increfs; handlerlab:=ppufile.getasmsymbol; handlerlab.increfs; end; procedure tai_jcatch.ppuwrite(ppufile: tcompilerppufile); begin inherited ppuwrite(ppufile); ppufile.putstring(name^); ppufile.putasmsymbol(startlab); ppufile.putasmsymbol(stoplab); ppufile.putasmsymbol(handlerlab); end; {$endif JVM} begin {$push}{$warnings off} { taitype should fit into a 4 byte set for speed reasons } if ord(high(taitype))>31 then internalerror(201108181); {$pop} end.