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fpc/compiler/aasmtai.pas

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{
$Id$
Copyright (c) 1998-2002 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 overriden for each assembler writer to actually write the data in these
classes to an assembler file.
}
unit aasmtai;
{$i fpcdefs.inc}
interface
uses
cutils,cclasses,
globtype,globals,systems,
cpuinfo,cpubase,
cgbase,cgutils,
symtype,
aasmbase;
type
taitype = (
ait_none,
ait_align,
ait_section,
ait_comment,
ait_direct,
ait_string,
ait_instruction,
ait_datablock,
ait_symbol,
ait_symbol_end, { needed to calc the size of a symbol }
ait_label,
ait_const_64bit,
ait_const_32bit,
ait_const_16bit,
ait_const_8bit,
ait_const_symbol,
{ the following is only used by the win32 version of the compiler }
{ and only the GNU AS Win32 is able to write it }
ait_const_rva,
ait_real_32bit,
ait_real_64bit,
ait_real_80bit,
ait_comp_64bit,
ait_real_128bit,
{$ifdef GDB}
ait_stabn,
ait_stabs,
ait_force_line,
ait_stab_function_name,
{$endif GDB}
{$ifdef alpha}
{ the follow is for the DEC Alpha }
ait_frame,
ait_ent,
{$endif alpha}
{$ifdef ia64}
ait_bundle,
ait_stop,
{$endif ia64}
{$ifdef m68k}
ait_labeled_instruction,
{$endif m68k}
{ used to split into tiny assembler files }
ait_cut,
ait_regalloc,
ait_tempalloc,
{ used to mark assembler blocks and inlined functions }
ait_marker,
{ special symbols for darwin pic code }
ait_indirect_symbol,
ait_non_lazy_symbol_pointer
);
const
taitypestr : array[taitype] of string[24] = (
'<none>',
'align',
'section',
'comment',
'direct',
'string',
'instruction',
'datablock',
'symbol',
'symbol_end',
'label',
'const_64bit',
'const_32bit',
'const_16bit',
'const_8bit',
'const_symbol',
'const_rva',
'real_32bit',
'real_64bit',
'real_80bit',
'comp_64bit',
'real_128bit',
{$ifdef GDB}
'stabn',
'stabs',
'force_line',
'stab_funcname',
{$endif GDB}
{$ifdef alpha}
{ the follow is for the DEC Alpha }
'frame',
'ent',
{$endif alpha}
{$ifdef ia64}
'bundle',
'stop',
{$endif ia64}
{$ifdef m68k}
'labeled_instr',
{$endif m68k}
'cut',
'regalloc',
'tempalloc',
'marker',
'indirect_symbol',
'non_lazy_symbol_pointer'
);
type
{ Types of operand }
toptype=(top_none,top_reg,top_ref,top_const,top_bool,top_local,
{ ARM only }
top_regset,
top_shifterop,
{ m68k only }
top_reglist);
{ kinds of operations that an instruction can perform on an operand }
topertype = (operand_read,operand_write,operand_readwrite);
tlocaloper = record
localsym : pointer;
localsymderef : tderef;
localsymofs : longint;
localindexreg : tregister;
localscale : byte;
localgetoffset : boolean
end;
plocaloper = ^tlocaloper;
{ please keep the size of this record <=12 bytes and keep it properly aligned }
toper = record
ot : longint;
{$ifdef cpuarm}
dummy1,dummy2,dummy3 : byte;
{$endif cpuarm}
case typ : toptype of
top_none : ();
top_reg : (reg:tregister);
top_ref : (ref:preference);
top_const : (val:aword);
top_bool : (b:boolean);
{ local varsym that will be inserted in pass_2 }
top_local : (localoper:plocaloper);
{$ifdef arm}
top_regset : (regset:^tcpuregisterset);
top_shifterop : (shifterop : pshifterop);
{$endif arm}
{$ifdef m68k}
top_regset : (regset:^tcpuregisterset);
{$endif m68k}
end;
poper=^toper;
{ ait_* types which don't result in executable code or which don't influence }
{ the way the program runs/behaves, but which may be encountered by the }
{ optimizer (= if it's sometimes added to the exprasm list). Update if you add }
{ a new ait type! }
const
SkipInstr = [ait_comment, ait_symbol,ait_section
{$ifdef GDB}
,ait_stabs, ait_stabn, ait_stab_function_name, ait_force_line
{$endif GDB}
,ait_regalloc, ait_tempalloc, ait_symbol_end];
{ ait_* types which do not have line information (and hence which are of type
tai, otherwise, they are of type tailineinfo }
SkipLineInfo =[ait_label,
ait_regalloc,ait_tempalloc,
{$ifdef GDB}
ait_stabn,ait_stabs,ait_stab_function_name,
{$endif GDB}
ait_cut,ait_marker,ait_align,ait_section,ait_comment,
ait_const_8bit,ait_const_16bit,ait_const_32bit,ait_const_64bit,
ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_real_128bit,
ait_non_lazy_symbol_pointer
];
type
{ cut type, required for alphanumeric ordering of the assembler filenames }
TCutPlace=(cut_normal,cut_begin,cut_end);
TRegAllocType = (ra_alloc,ra_dealloc,ra_resize);
TMarker = (NoPropInfoStart,NoPropInfoEnd,
AsmBlockStart,AsmBlockEnd,
InlineStart,InlineEnd,marker_blockstart,
marker_position);
{ Buffer type used for alignment }
tfillbuffer = array[0..63] of char;
Tspill_temp_list=array[tsuperregister] of Treference;
{ abstract assembler item }
tai = class(TLinkedListItem)
{$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);
constructor Create_length_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(tailineinfo)
is_global : boolean;
sym : tasmsymbol;
size : longint;
constructor Create(_sym:tasmsymbol;siz:longint);
constructor Create_Global(_sym:tasmsymbol;siz:longint);
constructor Createname(const _name : string;_symtyp:Tasmsymtype;siz:longint);
constructor Createname_global(const _name : string;_symtyp:Tasmsymtype;siz:longint);
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;
{ Generates an assembler label }
tai_label = class(tai)
is_global : boolean;
l : tasmlabel;
constructor Create(_l : tasmlabel);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
end;
{ Directly output data to final assembler file }
tai_direct = class(tailineinfo)
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 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)
sec : TSection;
constructor Create(s : TSection);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Generates an uninitializised data block }
tai_datablock = class(tailineinfo)
is_global : boolean;
sym : tasmsymbol;
size : longint;
constructor Create(const _name : string;_size : longint);
constructor Create_global(const _name : string;_size : longint);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
end;
{ Generates an integer const }
tai_const = class(tai)
value : qword;
constructor Create_ptr(_value : TConstPtrUInt);
constructor Create_64bit(_value : qword);
constructor Create_32bit(_value : cardinal);
constructor Create_16bit(_value : word);
constructor Create_8bit(_value : byte);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
tai_const_symbol = class(tailineinfo)
sym : tasmsymbol;
offset : aint;
constructor Create(_sym:tasmsymbol);
constructor Create_offset(_sym:tasmsymbol;ofs:aint);
constructor Create_rva(_sym:tasmsymbol);
constructor Create_indirect(_sym:tasmsymbol);
constructor Createname(const name:string;_symtyp:Tasmsymtype;ofs:aint);
constructor Createname_rva(const name:string);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
function getcopy:tlinkedlistitem;override;
end;
{ Generates a single float (32 bit real) }
tai_real_32bit = class(tai)
value : ts32real;
constructor Create(_value : ts32real);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
tformatoptions = (fo_none,fo_hiloswapped);
{ Generates a double float (64 bit real) }
tai_real_64bit = class(tai)
value : ts64real;
{$ifdef ARM}
formatoptions : tformatoptions;
constructor Create_hiloswapped(_value : ts64real);
{$endif ARM}
constructor Create(_value : ts64real);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Generates an extended float (80 bit real) }
tai_real_80bit = class(tai)
value : ts80real;
constructor Create(_value : ts80real);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Generates an float128 (128 bit real) }
tai_real_128bit = class(tai)
value : ts128real;
constructor Create(_value : ts128real);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Generates a comp int (integer over 64 bits)
This is Intel 80x86 specific, and is not
really supported on other processors.
}
tai_comp_64bit = class(tai)
value : ts64comp;
constructor Create(_value : ts64comp);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Insert a cut to split assembler into several smaller files }
tai_cut = class(tai)
place : tcutplace;
constructor Create;
constructor Create_begin;
constructor Create_end;
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Insert a marker for assembler and inline blocks }
tai_marker = class(tai)
Kind: TMarker;
Constructor Create(_Kind: TMarker);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
tai_tempalloc = class(tai)
allocation : boolean;
{$ifdef EXTDEBUG}
problem : pstring;
{$endif EXTDEBUG}
temppos,
tempsize : longint;
constructor alloc(pos,size:longint);
constructor dealloc(pos,size:longint);
{$ifdef EXTDEBUG}
constructor allocinfo(pos,size:longint;const st:string);
{$endif EXTDEBUG}
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
tai_regalloc = class(tai)
reg : tregister;
ratype : TRegAllocType;
constructor alloc(r : tregister);
constructor dealloc(r : tregister);
constructor resize(r : tregister);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
Taasmoutput=class;
tadd_reg_instruction_proc=procedure(instr:Tai;r:tregister) of object;
Trggetproc=procedure(list:Taasmoutput;position:Tai;subreg:Tsubregister;var result:Tregister) of object;
Trgungetproc=procedure(list:Taasmoutput;position:Tai;r:Tregister) of object;
{ Class template for assembler instructions
}
taicpu_abstract = class(tailineinfo)
protected
procedure ppuloadoper(ppufile:tcompilerppufile;var o:toper);virtual;abstract;
procedure ppuwriteoper(ppufile:tcompilerppufile;const o:toper);virtual;abstract;
procedure ppubuildderefimploper(var o:toper);virtual;abstract;
procedure ppuderefoper(var o:toper);virtual;abstract;
public
{ Condition flags for instruction }
condition : TAsmCond;
{ Number of operands to instruction }
ops : byte;
{ Number of allocate oper structures }
opercnt : byte;
{ Operands of instruction }
oper : array[0..max_operands-1] of poper;
{ Actual opcode of instruction }
opcode : tasmop;
{$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);
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:aword);
procedure loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint);
procedure loadlocal(opidx:longint;s:pointer;sofs:longint;indexreg:tregister;scale:byte;getoffset:boolean);
procedure loadref(opidx:longint;const r:treference);
procedure loadreg(opidx:longint;r:tregister);
procedure loadoper(opidx:longint;o:toper);
procedure clearop(opidx:longint);
function is_same_reg_move(regtype: Tregistertype):boolean;virtual;abstract;
{ register allocator }
function spilling_create_load(const ref:treference;r:tregister): tai;virtual;abstract;
function spilling_create_store(r:tregister; const ref:treference): tai;virtual;abstract;
function spilling_get_operation_type(opnr: longint): topertype;virtual;abstract;
end;
{ 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);
constructor Create_op(b: byte; _op: byte);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function calculatefillbuf(var buf : tfillbuffer):pchar;virtual;
end;
taasmoutput = class(tlinkedlist)
constructor create;
function empty:boolean;
function getlasttaifilepos : pfileposinfo;
procedure InsertAfter(Item,Loc : TLinkedListItem);override;
end;
var
{ array with all class types for tais }
aiclass : taiclassarray;
{ Current expression list }
exprasmlist : taasmoutput;
{ labels for BREAK and CONTINUE }
aktbreaklabel,aktcontinuelabel : tasmlabel;
{ label when the result is true or false }
truelabel,falselabel : tasmlabel;
{ hook to notify uses of registers }
add_reg_instruction_hook : tadd_reg_instruction_proc;
{ default lists }
datasegment,codesegment,bsssegment,
debuglist,withdebuglist,consts,
importssection,exportssection,
resourcesection,rttilist,
{ data used by pic code }
picdata,
resourcestringlist : taasmoutput;
function ppuloadai(ppufile:tcompilerppufile):tai;
procedure ppuwriteai(ppufile:tcompilerppufile;n:tai);
implementation
uses
{$ifdef delphi}
sysutils,
{$else}
strings,
{$endif}
verbose;
const
pputaimarker = 254;
{****************************************************************************
Helpers
****************************************************************************}
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;
{****************************************************************************
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;
if not(inlining_procedure and
(cs_gdb_valgrind in aktglobalswitches)) then
fileinfo:=aktfilepos;
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(s : TSection);
begin
inherited Create;
typ:=ait_section;
sec:=s;
end;
constructor tai_section.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
sec:=tsection(ppufile.getbyte);
end;
procedure tai_section.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(sec));
end;
{****************************************************************************
TAI_DATABLOCK
****************************************************************************}
constructor tai_datablock.Create(const _name : string;_size : longint);
begin
inherited Create;
typ:=ait_datablock;
sym:=objectlibrary.newasmsymbol(_name,AB_LOCAL,AT_DATA);
{ keep things aligned }
if _size<=0 then
_size:=4;
size:=_size;
is_global:=false;
end;
constructor tai_datablock.Create_global(const _name : string;_size : longint);
begin
inherited Create;
typ:=ait_datablock;
sym:=objectlibrary.newasmsymbol(_name,AB_GLOBAL,AT_DATA);
{ keep things aligned }
if _size<=0 then
_size:=4;
size:=_size;
is_global:=true;
end;
constructor tai_datablock.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited Create;
sym:=ppufile.getasmsymbol;
size:=ppufile.getlongint;
is_global:=boolean(ppufile.getbyte);
end;
procedure tai_datablock.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putasmsymbol(sym);
ppufile.putlongint(size);
ppufile.putbyte(byte(is_global));
end;
procedure tai_datablock.derefimpl;
begin
objectlibrary.DerefAsmsymbol(sym);
end;
{****************************************************************************
TAI_SYMBOL
****************************************************************************}
constructor tai_symbol.Create(_sym:tasmsymbol;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=_sym;
size:=siz;
sym.defbind:=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;
sym.defbind:=AB_GLOBAL;
is_global:=true;
end;
constructor tai_symbol.Createname(const _name : string;_symtyp:Tasmsymtype;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymbol(_name,AB_LOCAL,_symtyp);
size:=siz;
is_global:=false;
end;
constructor tai_symbol.Createname_global(const _name : string;_symtyp:Tasmsymtype;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymbol(_name,AB_GLOBAL,_symtyp);
size:=siz;
is_global:=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
objectlibrary.DerefAsmsymbol(sym);
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:=objectlibrary.newasmsymbol(_name,AB_GLOBAL,AT_NONE);
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
objectlibrary.DerefAsmsymbol(sym);
end;
{****************************************************************************
TAI_CONST
****************************************************************************}
constructor tai_const.Create_ptr(_value : TConstPtrUInt);
begin
{$ifdef cpu64bit}
self.create_64bit(_value);
{$else cpu64bit}
self.create_32bit(_value);
{$endif cpu64bit}
end;
constructor tai_const.Create_64bit(_value : qword);
begin
inherited Create;
typ:=ait_const_64bit;
value:=_value;
end;
constructor tai_const.Create_32bit(_value : cardinal);
begin
inherited Create;
typ:=ait_const_32bit;
value:=_value;
end;
constructor tai_const.Create_16bit(_value : word);
begin
inherited Create;
typ:=ait_const_16bit;
value:=_value;
end;
constructor tai_const.Create_8bit(_value : byte);
begin
inherited Create;
typ:=ait_const_8bit;
value:=_value;
end;
constructor tai_const.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getlongint;
end;
procedure tai_const.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putlongint(value);
end;
{****************************************************************************
TAI_CONST_SYMBOL
****************************************************************************}
constructor tai_const_symbol.Create(_sym:tasmsymbol);
begin
inherited Create;
typ:=ait_const_symbol;
sym:=_sym;
offset:=0;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Create_offset(_sym:tasmsymbol;ofs:aint);
begin
inherited Create;
typ:=ait_const_symbol;
sym:=_sym;
offset:=ofs;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Create_rva(_sym:tasmsymbol);
begin
inherited Create;
typ:=ait_const_rva;
sym:=_sym;
offset:=0;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Create_indirect(_sym:tasmsymbol);
begin
inherited Create;
typ:=ait_indirect_symbol;
sym:=_sym;
offset:=0;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Createname(const name:string;_symtyp:Tasmsymtype;ofs:aint);
begin
inherited Create;
typ:=ait_const_symbol;
sym:=objectlibrary.newasmsymbol(name,AB_EXTERNAL,_symtyp);
offset:=ofs;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Createname_rva(const name:string);
begin
inherited Create;
typ:=ait_const_rva;
sym:=objectlibrary.newasmsymbol(name,AB_EXTERNAL,AT_FUNCTION);
offset:=0;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
sym:=ppufile.getasmsymbol;
offset:=ppufile.getlongint;
end;
procedure tai_const_symbol.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putasmsymbol(sym);
ppufile.putlongint(offset);
end;
procedure tai_const_symbol.derefimpl;
begin
objectlibrary.DerefAsmsymbol(sym);
end;
function tai_const_symbol.getcopy:tlinkedlistitem;
begin
getcopy:=inherited getcopy;
{ we need to increase the reference number }
sym.increfs;
end;
{****************************************************************************
TAI_real_32bit
****************************************************************************}
constructor tai_real_32bit.Create(_value : ts32real);
begin
inherited Create;
typ:=ait_real_32bit;
value:=_value;
end;
constructor tai_real_32bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getreal;
end;
procedure tai_real_32bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(value);
end;
{****************************************************************************
TAI_real_64bit
****************************************************************************}
constructor tai_real_64bit.Create(_value : ts64real);
begin
inherited Create;
typ:=ait_real_64bit;
value:=_value;
end;
{$ifdef ARM}
constructor tai_real_64bit.Create_hiloswapped(_value : ts64real);
begin
inherited Create;
typ:=ait_real_64bit;
value:=_value;
formatoptions:=fo_hiloswapped;
end;
{$endif ARM}
constructor tai_real_64bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getreal;
{$ifdef ARM}
formatoptions:=tformatoptions(ppufile.getbyte);
{$endif ARM}
end;
procedure tai_real_64bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(value);
{$ifdef ARM}
ppufile.putbyte(byte(formatoptions));
{$endif ARM}
end;
{****************************************************************************
TAI_real_80bit
****************************************************************************}
constructor tai_real_80bit.Create(_value : ts80real);
begin
inherited Create;
typ:=ait_real_80bit;
value:=_value;
end;
constructor tai_real_80bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getreal;
end;
procedure tai_real_80bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(value);
end;
{****************************************************************************
TAI_real_80bit
****************************************************************************}
constructor tai_real_128bit.Create(_value : ts128real);
begin
inherited Create;
typ:=ait_real_128bit;
value:=_value;
end;
constructor tai_real_128bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getreal;
end;
procedure tai_real_128bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(value);
end;
{****************************************************************************
Tai_comp_64bit
****************************************************************************}
constructor tai_comp_64bit.Create(_value : ts64comp);
begin
inherited Create;
typ:=ait_comp_64bit;
value:=_value;
end;
constructor tai_comp_64bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
ppufile.putdata(value,sizeof(value));
end;
procedure tai_comp_64bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.getdata(value,sizeof(value));
end;
{****************************************************************************
TAI_STRING
****************************************************************************}
constructor tai_string.Create(const _str : string);
begin
inherited Create;
typ:=ait_string;
len:=length(_str);
getmem(str,len+1);
strpcopy(str,_str);
end;
constructor tai_string.Create_pchar(_str : pchar);
begin
inherited Create;
typ:=ait_string;
str:=_str;
len:=strlen(_str);
end;
constructor tai_string.Create_length_pchar(_str : pchar;length : longint);
begin
inherited Create;
typ:=ait_string;
str:=_str;
len:=length;
end;
destructor tai_string.destroy;
begin
{ you can have #0 inside the strings so }
if str<>nil then
freemem(str,len+1);
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+1);
move(str^,tai_string(p).str^,len+1);
getcopy:=p;
end;
{****************************************************************************
TAI_LABEL
****************************************************************************}
constructor tai_label.create(_l : tasmlabel);
begin
inherited Create;
typ:=ait_label;
l:=_l;
l.is_set:=true;
is_global:=(l.defbind=AB_GLOBAL);
end;
constructor tai_label.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
l:=tasmlabel(ppufile.getasmsymbol);
is_global:=boolean(ppufile.getbyte);
end;
procedure tai_label.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putasmsymbol(l);
ppufile.putbyte(byte(is_global));
end;
procedure tai_label.derefimpl;
begin
objectlibrary.DerefAsmsymbol(tasmsymbol(l));
l.is_set:=true;
end;
{****************************************************************************
TAI_DIRECT
****************************************************************************}
constructor tai_direct.Create(_str : pchar);
begin
inherited Create;
typ:=ait_direct;
str:=_str;
end;
destructor tai_direct.destroy;
begin
strdispose(str);
inherited Destroy;
end;
constructor tai_direct.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_direct.ppuwrite(ppufile:tcompilerppufile);
var
len : longint;
begin
inherited ppuwrite(ppufile);
len:=strlen(str);
ppufile.putlongint(len);
ppufile.putdata(str^,len);
end;
function tai_direct.getcopy : tlinkedlistitem;
var
p : tlinkedlistitem;
begin
p:=inherited getcopy;
getmem(tai_direct(p).str,strlen(str)+1);
move(str^,tai_direct(p).str^,strlen(str)+1);
getcopy:=p;
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
strdispose(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_CUT
****************************************************************************}
constructor tai_cut.Create;
begin
inherited Create;
typ:=ait_cut;
place:=cut_normal;
end;
constructor tai_cut.Create_begin;
begin
inherited Create;
typ:=ait_cut;
place:=cut_begin;
end;
constructor tai_cut.Create_end;
begin
inherited Create;
typ:=ait_cut;
place:=cut_end;
end;
constructor tai_cut.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
place:=TCutPlace(ppufile.getbyte);
end;
procedure tai_cut.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(place));
end;
{****************************************************************************
Tai_Marker
****************************************************************************}
constructor Tai_Marker.Create(_Kind: TMarker);
begin
Inherited Create;
typ := ait_marker;
Kind := _Kind;
end;
constructor Tai_Marker.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
kind:=TMarker(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);
begin
inherited create;
typ:=ait_regalloc;
ratype:=ra_alloc;
reg:=r;
end;
constructor tai_regalloc.dealloc(r : tregister);
begin
inherited create;
typ:=ait_regalloc;
ratype:=ra_dealloc;
reg:=r;
end;
constructor tai_regalloc.resize(r : tregister);
begin
inherited create;
typ:=ait_regalloc;
ratype:=ra_resize;
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);
end;
procedure tai_regalloc.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putdata(reg,sizeof(Tregister));
ppufile.putbyte(byte(ratype));
end;
{*****************************************************************************
TaiInstruction
*****************************************************************************}
constructor taicpu_abstract.Create(op : tasmop);
begin
inherited create;
typ:=ait_instruction;
is_jmp:=false;
opcode:=op;
ops:=0;
fillchar(condition,sizeof(condition),0);
fillchar(oper,sizeof(oper),0);
end;
destructor taicpu_abstract.Destroy;
var
i : integer;
begin
for i:=0 to opercnt-1 do
begin
clearop(i);
dispose(oper[i]);
end;
inherited destroy;
end;
{ ---------------------------------------------------------------------
Loading of operands.
---------------------------------------------------------------------}
procedure taicpu_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 taicpu_abstract.loadconst(opidx:longint;l:aword);
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 taicpu_abstract.loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint);
var
r : treference;
begin
reference_reset_symbol(r,s,sofs);
r.refaddr:=addr_full;
loadref(opidx,r);
end;
procedure taicpu_abstract.loadlocal(opidx:longint;s:pointer;sofs:longint;indexreg:tregister;scale:byte;getoffset: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;
end;
typ:=top_local;
end;
end;
procedure taicpu_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;
{$endif}
typ:=top_ref;
if assigned(add_reg_instruction_hook) then
begin
add_reg_instruction_hook(self,ref^.base);
add_reg_instruction_hook(self,ref^.index);
end;
{ mark symbol as used }
if assigned(ref^.symbol) then
ref^.symbol.increfs;
end;
end;
procedure taicpu_abstract.loadreg(opidx:longint;r:tregister);
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_reg then
clearop(opidx);
reg:=r;
typ:=top_reg;
end;
if assigned(add_reg_instruction_hook) then
add_reg_instruction_hook(self,r);
{$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);
{$endif ARM}
end;
procedure taicpu_abstract.loadoper(opidx:longint;o:toper);
begin
allocate_oper(opidx+1);
clearop(opidx);
oper[opidx]^:=o;
{ copy also the reference }
with oper[opidx]^ do
begin
case typ of
top_reg:
begin
if assigned(add_reg_instruction_hook) then
add_reg_instruction_hook(self,reg);
end;
top_ref:
begin
new(ref);
ref^:=o.ref^;
if assigned(add_reg_instruction_hook) then
begin
add_reg_instruction_hook(self,ref^.base);
add_reg_instruction_hook(self,ref^.index);
end;
end;
{$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;
{$endif ARM}
end;
end;
end;
procedure taicpu_abstract.clearop(opidx:longint);
begin
with oper[opidx]^ do
begin
case typ of
top_ref:
dispose(ref);
top_local:
dispose(localoper);
{$ifdef ARM}
top_shifterop:
dispose(shifterop);
top_regset:
dispose(regset);
{$endif ARM}
end;
typ:=top_none;
end;
end;
{ ---------------------------------------------------------------------
Miscellaneous methods.
---------------------------------------------------------------------}
procedure taicpu_abstract.SetCondition(const c:TAsmCond);
begin
condition:=c;
end;
Function taicpu_abstract.getcopy:TLinkedListItem;
var
i : longint;
p : taicpu_abstract;
begin
p:=taicpu_abstract(inherited getcopy);
{ make a copy of the references }
p.opercnt:=0;
p.allocate_oper(ops);
for i:=0 to ops-1 do
begin
p.oper[i]^:=oper[i]^;
case oper[i]^.typ of
top_local :
begin
new(p.oper[i]^.localoper);
p.oper[i]^.localoper^:=oper[i]^.localoper^;
end;
top_ref :
begin
new(p.oper[i]^.ref);
p.oper[i]^.ref^:=oper[i]^.ref^;
end;
{$ifdef ARM}
top_shifterop:
begin
new(p.oper[i]^.shifterop);
p.oper[i]^.shifterop^:=oper[i]^.shifterop^;
end;
{$endif ARM}
end;
end;
getcopy:=p;
end;
constructor taicpu_abstract.ppuload(t:taitype;ppufile:tcompilerppufile);
var
i : integer;
begin
inherited ppuload(t,ppufile);
{ hopefully, we don't get problems with big/litte endian here when cross compiling :/ }
ppufile.getdata(condition,sizeof(tasmcond));
allocate_oper(ppufile.getbyte);
for i:=0 to ops-1 do
ppuloadoper(ppufile,oper[i]^);
opcode:=tasmop(ppufile.getword);
{$ifdef x86}
ppufile.getdata(segprefix,sizeof(Tregister));
{$endif x86}
is_jmp:=boolean(ppufile.getbyte);
end;
procedure taicpu_abstract.ppuwrite(ppufile:tcompilerppufile);
var
i : integer;
begin
inherited ppuwrite(ppufile);
ppufile.putdata(condition,sizeof(tasmcond));
ppufile.putbyte(ops);
for i:=0 to ops-1 do
ppuwriteoper(ppufile,oper[i]^);
ppufile.putword(word(opcode));
{$ifdef x86}
ppufile.putdata(segprefix,sizeof(Tregister));
{$endif x86}
ppufile.putbyte(byte(is_jmp));
end;
procedure taicpu_abstract.buildderefimpl;
var
i : integer;
begin
for i:=0 to ops-1 do
ppubuildderefimploper(oper[i]^);
end;
procedure taicpu_abstract.derefimpl;
var
i : integer;
begin
for i:=0 to ops-1 do
ppuderefoper(oper[i]^);
end;
{****************************************************************************
tai_align_abstract
****************************************************************************}
constructor tai_align_abstract.Create(b: 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:=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;
function tai_align_abstract.calculatefillbuf(var buf : tfillbuffer):pchar;
begin
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;
{*****************************************************************************
TAAsmOutput
*****************************************************************************}
constructor taasmoutput.create;
begin
inherited create;
{ make sure the optimizer won't remove the first tai of this list}
insert(tai_marker.create(marker_blockstart));
end;
function taasmoutput.empty:boolean;
begin
result:=(count=0) or
(
(count=1) and
(tai(first).typ=ait_marker) and
(tai_marker(first).kind=marker_blockstart)
);
end;
function taasmoutput.getlasttaifilepos : pfileposinfo;
var
hp : tlinkedlistitem;
begin
getlasttaifilepos := nil;
if assigned(last) then
begin
{ find the last file information record }
if not (tai(last).typ in SkipLineInfo) then
getlasttaifilepos:=@tailineinfo(last).fileinfo
else
{ go through list backwards to find the first entry
with line information
}
begin
hp:=tai(last);
while assigned(hp) and (tai(hp).typ in SkipLineInfo) do
hp:=hp.Previous;
{ found entry }
if assigned(hp) then
getlasttaifilepos:=@tailineinfo(hp).fileinfo
end;
end;
end;
procedure Taasmoutput.InsertAfter(Item,Loc : TLinkedListItem);
begin
{ This is not possible because it is not sure that the
tai at Loc has taifileinfo as parent }
{if assigned(Loc) then
tailineinfo(Item).fileinfo:=tailineinfo(Loc).fileinfo;}
inherited InsertAfter(Item,Loc);
end;
end.
{
$Log$
Revision 1.84 2004-05-23 14:31:05 peter
* ignore marker block when checking for empty list
Revision 1.83 2004/05/22 23:34:27 peter
tai_regalloc.allocation changed to ratype to notify rgobj of register size changes
Revision 1.82 2004/04/12 18:59:32 florian
* small x86_64 fixes
Revision 1.81 2004/03/16 22:12:10 florian
* some alignment issues resolved
* compiler doesn't generate anymore instructions not supported by the linux fpe
Revision 1.80 2004/03/15 16:09:03 peter
* fix lineinfo broken by valgrind patch
Revision 1.79 2004/03/15 08:44:51 michael
+ Fix from peter: fixes crash when inlining assembler code referencing local vars
Revision 1.78 2004/03/14 22:47:56 peter
* fix memleak with top_local
Revision 1.77 2004/03/14 20:10:56 peter
* disable some debuginfo info when valgrind support is used
Revision 1.76 2004/03/02 17:32:12 florian
* make cycle fixed
+ pic support for darwin
+ support of importing vars from shared libs on darwin implemented
Revision 1.75 2004/03/02 00:36:32 olle
* big transformation of Tai_[const_]Symbol.Create[data]name*
Revision 1.74 2004/02/27 12:13:15 daniel
- Removed troublesome writeln statement
Revision 1.73 2004/02/27 10:21:04 florian
* top_symbol killed
+ refaddr to treference added
+ refsymbol to treference added
* top_local stuff moved to an extra record to save memory
+ aint introduced
* tppufile.get/putint64/aint implemented
Revision 1.72 2004/02/26 16:16:38 peter
* tai_const.create_ptr added
Revision 1.71 2004/02/08 23:10:21 jonas
* taicpu.is_same_reg_move() now gets a regtype parameter so it only
removes moves of that particular register type. This is necessary so
we don't remove the live_start instruction of a register before it
has been processed
Revision 1.70 2004/02/08 20:15:42 jonas
- removed taicpu.is_reg_move because it's not used anymore
+ support tracking fpu register moves by rgobj for the ppc
Revision 1.69 2004/01/31 17:45:16 peter
* Change several $ifdef i386 to x86
* Change several OS_32 to OS_INT/OS_ADDR
Revision 1.68 2004/01/30 13:42:03 florian
* fixed more alignment issues
Revision 1.67 2004/01/26 16:12:27 daniel
* reginfo now also only allocated during register allocation
* third round of gdb cleanups: kick out most of concatstabto
Revision 1.66 2004/01/24 18:12:40 florian
* fixed several arm floating point issues
Revision 1.65 2004/01/23 15:12:49 florian
* fixed generic shl/shr operations
+ added register allocation hook calls for arm specific operand types:
register set and shifter op
Revision 1.64 2004/01/12 16:37:59 peter
* moved spilling code from taicpu to rg
Revision 1.63 2003/12/28 16:20:09 jonas
- removed unused methods from old generic spilling code
Revision 1.62 2003/12/26 14:02:30 peter
* sparc updates
* use registertype in spill_register
Revision 1.61 2003/12/15 21:25:48 peter
* reg allocations for imaginary register are now inserted just
before reg allocation
* tregister changed to enum to allow compile time check
* fixed several tregister-tsuperregister errors
Revision 1.60 2003/12/14 20:24:28 daniel
* Register allocator speed optimizations
- Worklist no longer a ringbuffer
- No find operations are left
- Simplify now done in constant time
- unusedregs is now a Tsuperregisterworklist
- Microoptimizations
Revision 1.59 2003/12/08 22:34:24 peter
* tai_const.create_32bit changed to cardinal
Revision 1.58 2003/12/06 22:16:12 jonas
* completely overhauled and fixed generic spilling code. New method:
spilling_get_operation_type(operand_number): returns the operation
performed by the instruction on the operand: read/write/read+write.
See powerpc/aasmcpu.pas for an example
Revision 1.57 2003/12/03 17:39:04 florian
* fixed several arm calling conventions issues
* fixed reference reading in the assembler reader
* fixed a_loadaddr_ref_reg
Revision 1.55 2003/11/12 16:05:39 florian
* assembler readers OOPed
+ typed currency constants
+ typed 128 bit float constants if the CPU supports it
Revision 1.54 2003/11/07 15:58:32 florian
* Florian's culmutative nr. 1; contains:
- invalid calling conventions for a certain cpu are rejected
- arm softfloat calling conventions
- -Sp for cpu dependend code generation
- several arm fixes
- remaining code for value open array paras on heap
Revision 1.53 2003/10/30 19:59:00 peter
* support scalefactor for opr_local
* support reference with opr_local set, fixes tw2631
Revision 1.52 2003/10/29 21:06:39 jonas
* allow more than 3 args in the spilling routine
Revision 1.51 2003/10/29 15:40:20 peter
* support indexing and offset retrieval for locals
Revision 1.50 2003/10/29 14:42:14 mazen
* code reformatted
Revision 1.49 2003/10/29 14:05:45 mazen
* Splling function devided to sub functions to make it easy to understand.
This commit is just to allow easy diffs to validate the migration (hint use -w)
Revision 1.48 2003/10/24 17:39:41 peter
* asmnode.get_position now inserts a marker
Revision 1.47 2003/10/23 14:44:07 peter
* splitted buildderef and buildderefimpl to fix interface crc
calculation
Revision 1.46 2003/10/22 20:39:59 peter
* write derefdata in a separate ppu entry
Revision 1.45 2003/10/21 15:15:35 peter
* taicpu_abstract.oper[] changed to pointers
Revision 1.44 2003/10/17 14:38:32 peter
* 64k registers supported
* fixed some memory leaks
Revision 1.43 2003/10/11 16:06:42 florian
* fixed some MMX<->SSE
* started to fix ppc, needs an overhaul
+ stabs info improve for spilling, not sure if it works correctly/completly
- MMX_SUPPORT removed from Makefile.fpc
Revision 1.42 2003/10/10 17:48:13 peter
* old trgobj moved to x86/rgcpu and renamed to trgx86fpu
* tregisteralloctor renamed to trgobj
* removed rgobj from a lot of units
* moved location_* and reference_* to cgobj
* first things for mmx register allocation
Revision 1.41 2003/10/01 20:34:48 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.40 2003/09/23 17:56:05 peter
* locals and paras are allocated in the code generation
* tvarsym.localloc contains the location of para/local when
generating code for the current procedure
Revision 1.39 2003/09/07 22:09:34 peter
* preparations for different default calling conventions
* various RA fixes
Revision 1.38 2003/09/04 00:15:28 florian
* first bunch of adaptions of arm compiler for new register type
Revision 1.37 2003/09/03 15:55:00 peter
* NEWRA branch merged
Revision 1.36 2003/09/03 11:18:36 florian
* fixed arm concatcopy
+ arm support in the common compiler sources added
* moved some generic cg code around
+ tfputype added
* ...
Revision 1.35.2.5 2003/08/31 21:08:16 peter
* first batch of sparc fixes
Revision 1.35.2.4 2003/08/29 17:28:59 peter
* next batch of updates
Revision 1.35.2.3 2003/08/28 18:35:07 peter
* tregister changed to cardinal
Revision 1.35.2.2 2003/08/27 20:23:55 peter
* remove old ra code
Revision 1.35.2.1 2003/08/27 19:55:54 peter
* first tregister patch
Revision 1.35 2003/08/21 14:47:41 peter
* remove convert_registers
Revision 1.34 2003/08/20 20:29:06 daniel
* Some more R_NO changes
* Preventive code to loadref added
Revision 1.33 2003/08/17 20:47:47 daniel
* Notranslation changed into -sr functionality
Revision 1.32 2003/08/17 16:59:20 jonas
* fixed regvars so they work with newra (at least for ppc)
* fixed some volatile register bugs
+ -dnotranslation option for -dnewra, which causes the registers not to
be translated from virtual to normal registers. Requires support in
the assembler writer as well, which is only implemented in aggas/
agppcgas currently
Revision 1.31 2003/08/11 21:18:20 peter
* start of sparc support for newra
Revision 1.30 2003/07/02 16:43:48 jonas
* always add dummy marker object at the start of an assembler list, so
the optimizer can't remove the first object
Revision 1.29 2003/06/03 13:01:59 daniel
* Register allocator finished
Revision 1.28 2003/05/12 18:13:57 peter
* create rtti label using newasmsymboldata and update binding
only when calling tai_symbol.create
* tai_symbol.create_global added
Revision 1.27 2003/04/25 20:59:33 peter
* removed funcretn,funcretsym, function result is now in varsym
and aliases for result and function name are added using absolutesym
* vs_hidden parameter for funcret passed in parameter
* vs_hidden fixes
* writenode changed to printnode and released from extdebug
* -vp option added to generate a tree.log with the nodetree
* nicer printnode for statements, callnode
Revision 1.26 2002/04/25 16:12:09 florian
* fixed more problems with cpubase and x86-64
Revision 1.25 2003/04/25 08:25:26 daniel
* Ifdefs around a lot of calls to cleartempgen
* Fixed registers that are allocated but not freed in several nodes
* Tweak to register allocator to cause less spills
* 8-bit registers now interfere with esi,edi and ebp
Compiler can now compile rtl successfully when using new register
allocator
Revision 1.24 2003/04/24 13:03:01 florian
* comp is now written with its bit pattern to the ppu instead as an extended
Revision 1.23 2003/04/22 14:33:38 peter
* removed some notes/hints
Revision 1.22 2003/04/22 10:09:34 daniel
+ Implemented the actual register allocator
+ Scratch registers unavailable when new register allocator used
+ maybe_save/maybe_restore unavailable when new register allocator used
Revision 1.21 2003/02/19 22:00:14 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.20 2003/01/30 21:46:20 peter
* tai_const_symbol.createdataname added
Revision 1.19 2003/01/21 08:48:08 daniel
* Another 200301081 fixed
Revision 1.18 2003/01/09 20:40:59 daniel
* Converted some code in cgx86.pas to new register numbering
Revision 1.17 2003/01/09 15:49:56 daniel
* Added register conversion
Revision 1.16 2003/01/08 18:43:56 daniel
* Tregister changed into a record
Revision 1.15 2003/01/05 13:36:53 florian
* x86-64 compiles
+ very basic support for float128 type (x86-64 only)
Revision 1.14 2002/12/06 17:50:21 peter
* symbol count fix merged
Revision 1.13 2002/11/17 16:31:55 carl
* memory optimization (3-4%) : cleanup of tai fields,
cleanup of tdef and tsym fields.
* make it work for m68k
Revision 1.12 2002/11/15 16:29:30 peter
* made tasmsymbol.refs private (merged)
Revision 1.11 2002/11/15 01:58:45 peter
* merged changes from 1.0.7 up to 04-11
- -V option for generating bug report tracing
- more tracing for option parsing
- errors for cdecl and high()
- win32 import stabs
- win32 records<=8 are returned in eax:edx (turned off by default)
- heaptrc update
- more info for temp management in .s file with EXTDEBUG
Revision 1.10 2002/11/09 15:38:03 carl
+ NOOPT removed the optinfo field
Revision 1.9 2002/10/05 12:43:23 carl
* fixes for Delphi 6 compilation
(warning : Some features do not work under Delphi)
Revision 1.8 2002/08/19 19:36:42 peter
* More fixes for cross unit inlining, all tnodes are now implemented
* Moved pocall_internconst to po_internconst because it is not a
calling type at all and it conflicted when inlining of these small
functions was requested
Revision 1.7 2002/08/18 20:06:23 peter
* inlining is now also allowed in interface
* renamed write/load to ppuwrite/ppuload
* tnode storing in ppu
* nld,ncon,nbas are already updated for storing in ppu
Revision 1.6 2002/08/16 05:21:09 florian
* powerpc compilation fix
Revision 1.5 2002/08/15 19:10:35 peter
* first things tai,tnode storing in ppu
Revision 1.4 2002/08/11 14:32:25 peter
* renamed current_library to objectlibrary
Revision 1.3 2002/08/11 13:24:10 peter
* saving of asmsymbols in ppu supported
* asmsymbollist global is removed and moved into a new class
tasmlibrarydata that will hold the info of a .a file which
corresponds with a single module. Added librarydata to tmodule
to keep the library info stored for the module. In the future the
objectfiles will also be stored to the tasmlibrarydata class
* all getlabel/newasmsymbol and friends are moved to the new class
Revision 1.2 2002/08/05 18:27:48 carl
+ more more more documentation
+ first version include/exclude (can't test though, not enough scratch for i386 :()...
Revision 1.1 2002/07/01 18:46:20 peter
* internal linker
* reorganized aasm layer
Revision 1.27 2002/05/18 13:34:04 peter
* readded missing revisions
Revision 1.25 2002/05/14 19:34:38 peter
* removed old logs and updated copyright year
Revision 1.24 2002/05/14 17:28:08 peter
* synchronized cpubase between powerpc and i386
* moved more tables from cpubase to cpuasm
* tai_align_abstract moved to tainst, cpuasm must define
the tai_align class now, which may be empty
Revision 1.23 2002/04/15 18:54:34 carl
- removed tcpuflags
Revision 1.22 2002/04/07 13:18:19 carl
+ more documentation
Revision 1.21 2002/04/07 10:17:40 carl
- remove packenumfixed (requires version 1.0.2 or later to compile now!)
+ changing some comments so its commented automatically
Revision 1.20 2002/03/24 19:04:31 carl
+ patch for SPARC from Mazen NEIFER
}
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