{
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) }
ait_llvmmetadatanode, (* llvm metadata node: !id = !{type value, ...} *)
ait_llvmmetadatareftypedconst, { reference to metadata inside a metadata constant }
ait_llvmmetadatarefoperand, { llvm metadata referece: !metadataname !id }
{$endif}
{$ifdef wasm}
ait_export_name,
ait_local,
ait_globaltype,
ait_functype,
ait_tagtype,
ait_import_module,
ait_import_name,
{$endif}
{ SEH directives used in ARM,MIPS and x86_64 COFF targets }
ait_seh_directive,
{ Dwarf CFI directive }
ait_cfi,
ait_eabi_attribute
);
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,
{ offset in TLS block }
aitconst_dtpoff,
{ ARM TLS code }
aitconst_gottpoff,
aitconst_tpoff,
aitconst_tlsgd,
aitconst_tlsdesc
);
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] = (
'<none>',
'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}
{$ifdef llvm}
'llvmins',
'llvmalias',
'llvmdecl',
'llvmmetadata',
'llvmmetadatareftc',
'llvmmetadatarefop',
{$endif}
{$ifdef wasm}
'export_name',
'local',
'globaltype',
'functype',
'tagtype',
'import_module',
'import_name',
{$endif}
'cfi',
'seh_directive',
'eabi_attribute'
);
type
{ Types of operand }
toptype=(top_none,top_reg,top_ref,top_const,top_bool,top_local
{$ifdef arm}
{ ARM only }
,top_modeflags
,top_specialreg
{$endif arm}
{$if defined(arm) or defined(aarch64)}
,top_regset
,top_conditioncode
,top_shifterop
,top_realconst
{$endif defined(arm) or defined(aarch64)}
{$ifdef aarch64}
,top_indexedreg
{$endif}
{$ifdef m68k}
{ m68k only }
,top_regset
,top_regpair
,top_realconst
{$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
{$endif cpuextended}
,top_tai
,top_def
,top_fpcond
,top_cond
,top_para
,top_asmlist
,top_callingconvention
{$endif llvm}
{$if defined(riscv32) or defined(riscv64)}
,top_fenceflags
,top_roundingmode
{$endif defined(riscv32) or defined(riscv64)}
{$ifdef wasm}
,top_functype
,top_single
,top_double
{$endif wasm}
);
{ 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;
{$ifdef x86}
localsegment,
{$endif x86}
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}
{$ifdef llvm}
ait_llvmdecl,
ait_llvmmetadatanode,
ait_llvmmetadatareftypedconst,
ait_llvmmetadatarefoperand,
{$endif llvm}
{$ifdef wasm}
ait_export_name,
ait_local,
ait_globaltype,
ait_functype,
ait_tagtype,
ait_import_module,
ait_import_name,
{$endif wasm}
ait_seh_directive,
ait_cfi,
ait_eabi_attribute
];
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,asd_force_thumb,
{ 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,
{ for the OMF object format }
asd_omf_linnum_line,
{ RISC-V }
asd_option
);
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_savereg_x,ash_saveregp,ash_saveregp_x,
ash_savexmm,ash_savefreg,ash_savefreg_x,ash_savefregp,ash_savefregp_x,ash_pushframe,
ash_setfp,ash_addfp,ash_savefplr,ash_savefplr_x,
ash_nop,
ash_pushnv,ash_savenv
);
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',
'force_thumb',
'cpu',
{ for the OMF object format }
'omf_line',
{ RISC-V }
'option'
);
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_savereg_x','.seh_saveregp','.seh_saveregp_x',
'.seh_savexmm','.seh_savefreg','.seh_savefreg_x','.seh_savefregp','.seh_savefregp_x','.seh_pushframe',
'.seh_setfp','.seh_addfp','.seh_savefplr','.seh_savefplr_x',
'.seh_nop',
'.pushnv','.savenv'
);
symbolpairkindstr: array[TSymbolPairKind] of string[11]=(
'.set', '.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;
{$ifdef x86}
vopext: smallint;
{$ENDIF}
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}
{$if defined(arm) or defined(aarch64)}
top_shifterop : (shifterop : pshifterop);
top_conditioncode : (cc : TAsmCond);
top_realconst : (val_real:bestreal);
{$endif defined(arm) or defined(aarch64)}
{$ifdef aarch64}
top_regset : (basereg: tregister; nregs, regsetindex: byte);
top_indexedreg : (indexedreg: tregister; regindex: byte);
{$endif}
{$ifdef m68k}
top_regset : (dataregset,addrregset,fpuregset: tcpuregisterset);
top_regpair : (reghi,reglo: tregister);
top_realconst : (val_real:bestreal);
{$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);
{$endif cpuextended}
top_tai : (ai: tai);
top_def : (def: tdef);
top_cond : (cond: topcmp);
top_fpcond : (fpcond: tllvmfpcmp);
top_para : (paras: tfplist);
top_asmlist : (asmlist: tasmlist);
top_callingconvention: (callingconvention: tproccalloption);
{$endif llvm}
{$if defined(riscv32) or defined(riscv64)}
top_fenceflags : (fenceflags : TFenceFlags);
top_roundingmode : (roundingmode : TRoundingMode);
{$endif defined(riscv32) or defined(riscv64)}
{$ifdef wasm}
top_functype : (functype: TWasmFuncType);
top_single : (sval:single);
top_double : (dval:double);
{$endif wasm}
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 Create_Weak(_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_hidden(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 : longint;
name : pshortstring;
{ used in binary writer }
sec : TObjSection;
{ used only by ELF so far }
secflags : TSectionFlags;
secprogbits : TSectionProgbits;
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:longint;Asecorder:TasmSectionorder=secorder_default);
{$pop}
end;
{ Generates an uninitializised data block }
tai_datablock = class(tailineinfo)
is_global : boolean;
sym : tasmsymbol;
size : asizeint;
constructor Create(const _name: string; _size: asizeint; def: tdef; _typ: Tasmsymtype);
constructor Create_hidden(const _name: string; _size: asizeint; def: tdef; _typ: Tasmsymtype);
constructor Create_global(const _name: string; _size: asizeint; def: tdef; _typ: Tasmsymtype);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
end;
{ Generates an integer const }
{ tai_const }
tai_const = class(tai)
sym,
endsym : tasmsymbol;
{ if symbols and offset are provided the symofs is used,
the value is calculated during assembling }
symofs,
value : int64;
consttype : taiconst_type;
{ sleb128 and uleb128 values have a varying length, by calling FixSize their size can be fixed
to avoid that other offsets need to be changed. The value to write is stored in fixed_size }
fixed_size : byte;
{ we use for the 128bit int64/qword for now because I can't imagine a
case where we need 128 bit now (FK) }
constructor Create(_typ:taiconst_type;_value : int64);
constructor Create_128bit(_value : int64);
constructor Create_64bit(_value : int64);
constructor Create_32bit(_value : longint);
constructor Create_16bit(_value : word);
constructor Create_64bit_unaligned(_value : int64);
constructor Create_32bit_unaligned(_value : longint);
constructor Create_16bit_unaligned(_value : word);
constructor Create_8bit(_value : byte);
constructor Create_char(size: integer; _value: dword);
constructor Create_sleb128bit(_value : int64);
constructor Create_uleb128bit(_value : qword);
constructor Create_aint(_value : aint);
constructor Create_sizeint(_value : asizeint);
constructor Create_sizeint_unaligned(_value : asizeint);
constructor Create_sym(_sym:tasmsymbol);
{$ifdef i8086}
constructor Create_sym_near(_sym:tasmsymbol);
constructor Create_sym_far(_sym:tasmsymbol);
constructor Createname_near(const name:string;ofs:asizeint);
constructor Createname_far(const name:string;ofs:asizeint);
constructor Createname_near(const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
constructor Createname_far(const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
{$endif i8086}
constructor Create_type_sym(_typ:taiconst_type;_sym:tasmsymbol);
constructor Create_sym_offset(_sym:tasmsymbol;ofs:asizeint);
constructor Create_type_sym_offset(_typ:taiconst_type;_sym:tasmsymbol;ofs:asizeint);
constructor Create_rel_sym(_typ:taiconst_type;_sym,_endsym:tasmsymbol);
constructor Create_rel_sym_offset(_typ : taiconst_type; _sym,_endsym : tasmsymbol; _ofs : int64);
constructor Create_rva_sym(_sym:tasmsymbol);
constructor Createname(const name:string;ofs:asizeint);
constructor Createname_rel(const name, endname: string);
constructor Createname(const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
constructor Create_type_name(_typ:taiconst_type;const name:string;ofs:asizeint);
constructor Create_type_name(_typ:taiconst_type;const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
constructor Create_nil_codeptr;
constructor Create_nil_codeptr_unaligned;
constructor Create_nil_dataptr;
constructor Create_nil_dataptr_unaligned;
constructor Create_int_codeptr(_value: int64);
constructor Create_int_codeptr_unaligned(_value: int64);
constructor Create_int_dataptr(_value: int64);
constructor Create_int_dataptr_unaligned(_value: int64);
{$ifdef avr}
constructor Create_int_dataptr_unaligned(_value: int64; size: taiconst_type);
{$endif}
{$ifdef i8086}
constructor Create_seg_name(const name:string);
constructor Create_dgroup;
constructor Create_fardataseg;
{$endif i8086}
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
function getcopy:tlinkedlistitem;override;
function size:longint;
{ sleb128 and uleb128 values have a varying length, by calling FixSize their size can be fixed
to avoid that other offsets need to be changed. The value to write is stored in fixed_size }
Procedure FixSize;
end;
{ floating point const }
tformatoptions = (fo_none,fo_hiloswapped);
tai_realconst = class(tai)
realtyp: tairealconsttype;
savesize: byte;
value: record
case tairealconsttype of
aitrealconst_s32bit: (s32val: ts32real);
aitrealconst_s64bit: (s64val: ts64real);
aitrealconst_s80bit: (s80val: ts80real);
aitrealconst_s128bit: (s128val: ts128real);
aitrealconst_s64comp: (s64compval: ts64comp);
end;
{$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:tcgint);
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 }
maxbytes : byte; { if needed bytes would be larger than maxbyes, alignment is ignored }
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_max(b: byte; max: byte);virtual;
constructor create_op_max(b: byte; _op: byte; max: 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;
{$endif JVM}
tai_symbolpair = class(tai)
kind: TSymbolPairKind;
sym,
value: pshortstring;
constructor create(akind: TSymbolPairKind; const asym, avalue: string);
destructor destroy;override;
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
teattrtyp = (eattrtype_none,eattrtype_dword,eattrtype_ntbs);
tai_eabi_attribute = class(tai)
eattr_typ : teattrtyp;
tag,value : dword;
valuestr : pstring;
constructor create(atag,avalue : dword);
constructor create(atag : dword;const avalue : string);
destructor destroy;override;
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
var
{ array with all class types for tais }
aiclass : taiclassarray;
{ target specific tais, possibly overwritten in target specific aasmcpu }
cai_align : tai_align_class = tai_align_abstract;
cai_cpu : tai_cpu_class = tai_cpu_abstract;
cai_seh_directive: tai_seh_directive_class = tai_seh_directive;
{ hook to notify uses of registers }
add_reg_instruction_hook : tadd_reg_instruction_proc;
procedure maybe_new_object_file(list:TAsmList);
function new_section(list:TAsmList;Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default) : tai_section;
function ppuloadai(ppufile:tcompilerppufile):tai;
procedure ppuwriteai(ppufile:tcompilerppufile;n:tai);
implementation
uses
{$ifdef x86}
aasmcpu,
{$endif x86}
SysUtils,
verbose,
globals,
ppu;
const
pputaimarker = 254;
{****************************************************************************
Helpers
****************************************************************************}
procedure maybe_new_object_file(list:TAsmList);
begin
if create_smartlink_library then
list.concat(tai_cutobject.create);
end;
function new_section(list:TAsmList;Asectype:TAsmSectiontype;const Aname:string;Aalign:byte;Asecorder:TasmSectionorder=secorder_default) : tai_section;
begin
Result:=tai_section.create(Asectype,Aname,Aalign,Asecorder);
list.concat(Result);
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:longint;Asecorder:TasmSectionorder=secorder_default);
begin
inherited Create;
typ:=ait_section;
sectype:=asectype;
secalign:=Aalign;
secorder:=Asecorder;
TObjData.sectiontype2progbitsandflags(sectype,secprogbits,secflags);
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.getlongint;
name:=ppufile.getpshortstring;
ppufile.getset(tppuset1(secflags));
secprogbits:=TSectionProgbits(ppufile.getbyte);
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.putlongint(secalign);
ppufile.putstring(name^);
ppufile.putset(tppuset1(secflags));
ppufile.putbyte(byte(secprogbits));
end;
{****************************************************************************
TAI_DATABLOCK
****************************************************************************}
constructor tai_datablock.Create(const _name : string;_size : asizeint; def: tdef; _typ:Tasmsymtype);
begin
inherited Create;
typ:=ait_datablock;
sym:=current_asmdata.DefineAsmSymbol(_name,AB_LOCAL,_typ,def);
{ keep things aligned }
if _size<=0 then
_size:=sizeof(aint);
size:=_size;
is_global:=false;
end;
constructor tai_datablock.Create_hidden(const _name: string; _size: asizeint; def: tdef; _typ:Tasmsymtype);
begin
if tf_supports_hidden_symbols in target_info.flags then
begin
inherited Create;
typ:=ait_datablock;
sym:=current_asmdata.DefineAsmSymbol(_name,AB_PRIVATE_EXTERN,_typ,def);
{ keep things aligned }
if _size<=0 then
_size:=sizeof(aint);
size:=_size;
is_global:=true;
end
else
Create(_name,_size,def,_typ);
end;
constructor tai_datablock.Create_global(const _name : string;_size : asizeint; def: tdef; _typ:Tasmsymtype);
begin
inherited Create;
typ:=ait_datablock;
sym:=current_asmdata.DefineAsmSymbol(_name,AB_GLOBAL,_typ,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:=ppufile.getboolean;
end;
procedure tai_datablock.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putasmsymbol(sym);
ppufile.putaint(size);
ppufile.putboolean(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.Create_Weak(_sym:tasmsymbol;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=_sym;
size:=siz;
if not(sym.bind in [AB_NONE,AB_WEAK_EXTERNAL]) then
internalerror(2021092801);
sym.bind:=AB_WEAK;
is_global:=false;
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_hidden(const _name: string; _symtyp: Tasmsymtype; siz: longint; def: tdef);
begin
if tf_supports_hidden_symbols in target_info.flags then
begin
inherited Create;
typ:=ait_symbol;
sym:=current_asmdata.DefineAsmSymbol(_name,AB_PRIVATE_EXTERN,_symtyp,def);
size:=siz;
is_global:=true;
end
else
Createname(_name, _symtyp, siz, def);
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:=ppufile.getboolean;
end;
procedure tai_symbol.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putasmsymbol(sym);
ppufile.putlongint(size);
ppufile.putboolean(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;
constructor tai_const.Createname_near(const name:string;ofs:asizeint);
begin
self.Createname(name,ofs);
consttype:=aitconst_ptr;
end;
constructor tai_const.Createname_far(const name:string;ofs:asizeint);
begin
self.Createname(name,ofs);
consttype:=aitconst_farptr;
end;
constructor tai_const.Createname_near(const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
begin
self.Createname(name,_symtyp,ofs);
consttype:=aitconst_ptr;
end;
constructor tai_const.Createname_far(const name:string;_symtyp:Tasmsymtype;ofs:asizeint);
begin
self.Createname(name,_symtyp,ofs);
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.Createname_rel(const name,endname:string);
begin
self.create_sym_offset(current_asmdata.RefAsmSymbol(name,AT_NONE),0);
endsym:=current_asmdata.RefAsmSymbol(endname,AT_NONE)
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;
{$ifdef avr}
constructor tai_const.Create_int_dataptr_unaligned(_value: int64;
size: taiconst_type);
begin
inherited Create;
typ:=ait_const;
consttype:=size;
sym:=nil;
endsym:=nil;
symofs:=0;
value:=_value;
end;
{$endif avr}
{$ifdef i8086}
constructor tai_const.Create_seg_name(const name:string);
begin
self.Createname(name,0);
self.consttype:=aitconst_seg;
end;
constructor tai_const.Create_dgroup;
begin
self.Create_16bit(0);
self.consttype:=aitconst_dgroup;
end;
constructor tai_const.Create_fardataseg;
begin
self.Create_16bit(0);
self.consttype:=aitconst_fardataseg;
end;
{$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 systems_peoptplus then
result:=sizeof(longint)
else
result:=sizeof(pint);
aitconst_uleb128bit :
begin
if fixed_size>0 then
result:=fixed_size
else if sym=nil then
begin
FixSize;
result:=fixed_size;
end
else
{ worst case }
result:=sizeof(pint)+2;
end;
aitconst_sleb128bit :
begin
if fixed_size>0 then
result:=fixed_size
else if sym=nil then
begin
FixSize;
result:=fixed_size;
end
else
{ worst case }
result:=sizeof(pint)+2;
end;
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;
aitconst_gottpoff:
result:=4;
aitconst_tlsgd:
result:=4;
aitconst_tpoff:
result:=4;
aitconst_tlsdesc:
result:=4;
aitconst_dtpoff:
result:=4;
else
internalerror(200603253);
end;
end;
procedure tai_const.FixSize;
begin
case consttype of
aitconst_uleb128bit:
fixed_size:=LengthUleb128(qword(value));
aitconst_sleb128bit:
fixed_size:=LengthSleb128(value);
else
Internalerror(2019030301);
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);
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
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
result:=0;
case realtyp of
aitrealconst_s32bit:
result:=4;
aitrealconst_s64bit,
aitrealconst_s64comp:
result:=8;
aitrealconst_s80bit:
result:=10;
aitrealconst_s128bit:
result:=16;
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:=ppufile.getboolean;
{$ifdef EXTDEBUG}
problem:=nil;
{$endif EXTDEBUG}
end;
procedure tai_tempalloc.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putlongint(temppos);
ppufile.putlongint(tempsize);
ppufile.putboolean(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:=ppufile.getboolean;
end;
procedure tai_regalloc.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putdata(reg,sizeof(Tregister));
ppufile.putbyte(byte(ratype));
ppufile.putboolean(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:tcgint);
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;
{$ifdef x86}
localsegment:=NR_NO;
{$endif x86}
end;
typ:=top_local;
end;
end;
procedure tai_cpu_abstract.loadref(opidx:longint;const r:treference);
{$ifdef x86}
var
si_param: ShortInt;
{$endif}
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_ref then
begin
clearop(opidx);
new(ref);
end;
ref^:=r;
{$ifdef x86}
{ We allow this exception for x86, since overloading this would be
too much of a a speed penalty}
if is_x86_parameterized_string_op(opcode) then
begin
si_param:=get_x86_string_op_si_param(opcode);
if (si_param<>-1) and (taicpu(self).OperandOrder=op_att) then
si_param:=x86_parameterized_string_op_param_count(opcode)-si_param-1;
if (si_param=opidx) and (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then
segprefix:=ref^.segment;
end
else if (opcode=A_XLAT) and (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then
segprefix:=ref^.segment
else if (ref^.segment<>NR_NO) and (ref^.segment<>get_default_segment_of_ref(ref^)) then
segprefix:=ref^.segment;
{$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);
{$ifdef x86}
var
si_param: ShortInt;
{$endif x86}
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^;
{$ifdef x86}
{ We allow this exception for x86, since overloading this would be
too much of a a speed penalty}
if is_x86_parameterized_string_op(opcode) then
begin
si_param:=get_x86_string_op_si_param(opcode);
if (si_param<>-1) and (taicpu(self).OperandOrder=op_att) then
si_param:=x86_parameterized_string_op_param_count(opcode)-si_param-1;
if (si_param=opidx) and (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then
segprefix:=ref^.segment;
end
else if (opcode=A_XLAT) and (ref^.segment<>NR_NO) and (ref^.segment<>NR_DS) then
segprefix:=ref^.segment
else if (ref^.segment<>NR_NO) and (ref^.segment<>get_default_segment_of_ref(ref^)) then
segprefix:=ref^.segment;
{$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}
else
;
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}
{$ifdef wasm}
top_functype:
FreeAndNil(functype);
{$endif wasm}
else
;
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}
else
;
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/little endian here when cross compiling :/ }
ppufile.getdata(condition,sizeof(tasmcond));
ops := ppufile.getbyte;
allocate_oper(ops);
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:=ppufile.getboolean;
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.putboolean(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;
{$ifdef x86}
localsegment:=tregister(ppufile.getlongint);
{$endif x86}
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);
{$ifdef x86}
ppufile.putlongint(longint(localsegment));
{$endif x86}
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;
maxbytes:=aligntype;
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;
maxbytes:=aligntype;
end;
constructor tai_align_abstract.create_max(b : byte; max : byte);
begin
inherited Create;
typ:=ait_align;
if b in [1,2,4,8,16,32] then
aligntype := b
else
aligntype := 1;
maxbytes:=max;
fillsize:=0;
fillop:=0;
use_op:=false;
end;
constructor tai_align_abstract.create_op_max(b: byte; _op: byte; max: byte);
begin
inherited Create;
typ:=ait_align;
if b in [1,2,4,8,16,32] then
aligntype := b
else
aligntype := 1;
fillop:=_op;
use_op:=true;
maxbytes:=max;
fillsize:=0;
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;
maxbytes:=aligntype;
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:=ppufile.getboolean;
maxbytes:=ppufile.getbyte;
end;
procedure tai_align_abstract.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(aligntype);
ppufile.putbyte(fillop);
ppufile.putboolean(use_op);
ppufile.putbyte(maxbytes);
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, { savereg_x }
sd_regoffset, { saveregp }
sd_regoffset, { saveregp_x }
sd_regoffset, { savexmm }
sd_regoffset, { savefreg }
sd_regoffset, { savefreg_x }
sd_regoffset, { savefregp }
sd_regoffset, { savefregp_x }
sd_none, { pushframe }
sd_none, { setfp }
sd_none, { addfp }
sd_offset, { savefplr }
sd_offset, { savefplr_x }
sd_none, { nop }
sd_reg, { pushnv }
sd_none { savenv }
);
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;
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;
end;
end;
procedure tai_seh_directive.generate_code(objdata:TObjData);
begin
end;
{****************************************************************************
tai_eabi_attribute
****************************************************************************}
constructor tai_eabi_attribute.create(atag,avalue : dword);
begin
inherited Create;
typ:=ait_eabi_attribute;
eattr_typ:=eattrtype_dword;
tag:=atag;
value:=avalue;
end;
constructor tai_eabi_attribute.create(atag: dword; const avalue: string);
begin
inherited Create;
typ:=ait_eabi_attribute;
eattr_typ:=eattrtype_ntbs;
tag:=atag;
valuestr:=NewStr(avalue);
end;
destructor tai_eabi_attribute.destroy;
begin
Inherited Destroy;
end;
constructor tai_eabi_attribute.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
end;
procedure tai_eabi_attribute.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putdword(tag);
ppufile.putdword(value);
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
{$ifndef WASM}
{$push}{$warnings off}
{ taitype should fit into a 4 byte set for speed reasons }
if ord(high(taitype))>31 then
internalerror(201108181);
{$pop}
{$endif WASM}
end.