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fpc/compiler/aasmtai.pas
carl 64655be168 * memory optimization (3-4%) : cleanup of tai fields, 
cleanup of tdef and tsym fields.
  * make it work for m68k
2002-11-17 16:31:55 +00:00

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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;
{$i fpcdefs.inc}
interface
uses
cutils,cclasses,
globtype,globals,systems,
cpuinfo,cpubase,
symppu,
aasmbase;
type
taitype = (
ait_none,
ait_align,
ait_section,
ait_comment,
ait_direct,
ait_string,
ait_instruction,
ait_datablock,
ait_symbol,
ait_symbol_end, { needed to calc the size of a symbol }
ait_label,
ait_const_32bit,
ait_const_16bit,
ait_const_8bit,
ait_const_symbol,
{ the following is only used by the win32 version of the compiler }
{ and only the GNU AS Win32 is able to write it }
ait_const_rva,
ait_real_32bit,
ait_real_64bit,
ait_real_80bit,
ait_comp_64bit,
{$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,
{$endif m68k}
{$ifdef SPARC}
ait_labeled_instruction,
{$endif SPARC}
ait_cut, { used to split into tiny assembler files }
ait_regalloc,
ait_tempalloc,
ait_marker { used to mark assembler blocks and inlined functions }
);
const
taitypestr : array[taitype] of string[14] = (
'<none>',
'align',
'section',
'comment',
'direct',
'string',
'instruction',
'datablock',
'symbol',
'symbol_end',
'label',
'const_32bit',
'const_16bit',
'const_8bit',
'const_symbol',
'const_rva',
'real_32bit',
'real_64bit',
'real_80bit',
'comp_64bit',
{$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',
{$endif m68k}
{$ifdef SPARC}
'labeled_instr',
{$endif SPARC}
'cut',
'regalloc',
'tempalloc',
'marker'
);
{ ait_* types which don't result in executable code or which don't influence }
{ the way the program runs/behaves, but which may be encountered by the }
{ optimizer (= if it's sometimes added to the exprasm list). Update if you add }
{ a new ait type! }
const
SkipInstr = [ait_comment, ait_symbol,ait_section
{$ifdef GDB}
,ait_stabs, ait_stabn, ait_stab_function_name, ait_force_line
{$endif GDB}
,ait_regalloc, ait_tempalloc, ait_symbol_end];
{ ait_* types which do not have line information (and hence which are of type
tai, otherwise, they are of type tailineinfo }
{ ait_* types which do not have line information (and hence which are of type
tai, otherwise, they are of type tailineinfo }
SkipLineInfo =[ait_label,
ait_regalloc,ait_tempalloc,
{$ifdef GDB}
ait_stabn,ait_stabs,ait_stab_function_name,
{$endif GDB}
ait_cut,ait_marker,ait_align,ait_section,ait_comment,
ait_const_8bit,ait_const_16bit,ait_const_32bit,
ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit
];
type
{ cut type, required for alphanumeric ordering of the assembler filenames }
TCutPlace=(cut_normal,cut_begin,cut_end);
TMarker = (NoPropInfoStart,NoPropInfoEnd,
AsmBlockStart,AsmBlockEnd,
InlineStart,InlineEnd);
{ Buffer type used for alignment }
tfillbuffer = array[0..63] of char;
{ abstract assembler item }
tai = class(TLinkedListItem)
{$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 derefimpl;virtual;
{ helper for checking symbol redefines }
procedure checkredefinesym(sym:tasmsymbol);
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;
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 Createname(const _name : string;siz:longint);
constructor Createname_global(const _name : string;siz:longint);
constructor Createdataname(const _name : string;siz:longint);
constructor Createdataname_global(const _name : string;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 a long integer (32 bit) }
tai_const = class(tai)
value : longint;
constructor Create_32bit(_value : longint);
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 : longint;
constructor Create(_sym:tasmsymbol);
constructor Create_offset(_sym:tasmsymbol;ofs:longint);
constructor Create_rva(_sym:tasmsymbol);
constructor Createname(const name:string);
constructor Createname_offset(const name:string;ofs:longint);
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;
{ Generates a double float (64 bit real) }
tai_real_64bit = class(tai)
value : ts64real;
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 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);
{$endif EXTDEBUG}
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
tai_regalloc = class(tai)
allocation : boolean;
reg : tregister;
constructor alloc(r : tregister);
constructor dealloc(r : tregister);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ Class template for assembler instructions
}
taicpu_abstract = class(tailineinfo)
protected
procedure ppuloadoper(ppufile:tcompilerppufile;var o:toper);virtual;abstract;
procedure ppuwriteoper(ppufile:tcompilerppufile;const o:toper);virtual;abstract;
procedure ppuderefoper(var o:toper);virtual;abstract;
public
{ Condition flags for instruction }
condition : TAsmCond;
{ Number of operands to instruction }
ops : byte;
{ Operands of instruction }
oper : array[0..max_operands-1] of toper;
{ Actual opcode of instruction }
opcode : tasmop;
{$ifdef i386}
segprefix : tregister;
{$endif i386}
{ true if instruction is a jmp }
is_jmp : boolean; { is this instruction a jump? (needed for optimizer) }
Constructor Create(op : tasmop);
Destructor Destroy;override;
function getcopy:TLinkedListItem;override;
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure derefimpl;override;
procedure SetCondition(const c:TAsmCond);
procedure loadconst(opidx:longint;l:aword);
procedure loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint);
procedure loadref(opidx:longint;const r:treference);
procedure loadreg(opidx:longint;r:tregister);
procedure loadoper(opidx:longint;o:toper);
end;
{ alignment for operator }
tai_align_abstract = class(tai)
aligntype : byte; { 1 = no align, 2 = word align, 4 = dword align }
fillsize : byte; { real size to fill }
fillop : byte; { value to fill with - optional }
use_op : boolean;
constructor Create(b:byte);
constructor Create_op(b: byte; _op: byte);
constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function calculatefillbuf(var buf : tfillbuffer):pchar;virtual;
end;
taasmoutput = class(tlinkedlist)
function getlasttaifilepos : pfileposinfo;
end;
var
{ array with all class types for tais }
aiclass : taiclassarray;
{ temporary lists }
exprasmlist,
{ default lists }
datasegment,codesegment,bsssegment,
debuglist,withdebuglist,consts,
importssection,exportssection,
resourcesection,rttilist,
resourcestringlist : taasmoutput;
function ppuloadai(ppufile:tcompilerppufile):tai;
procedure ppuwriteai(ppufile:tcompilerppufile;n:tai);
implementation
uses
{$ifdef delphi}
sysutils,
{$else}
strings,
{$endif}
verbose,
ppu;
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.derefimpl;
begin
end;
procedure tai.checkredefinesym(sym:tasmsymbol);
begin
{ if assigned(sym.taiowner) then
begin
Message1(asmw_e_redefined_label,sym.name);
end
else
sym.taiowner:=self;}
end;
{****************************************************************************
TAILINEINFO
****************************************************************************}
constructor tailineinfo.create;
begin
inherited create;
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_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.newasmsymboltype(_name,AB_LOCAL,AT_DATA);
{ checkredefinesym(sym);}
{ 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.newasmsymboltype(_name,AB_GLOBAL,AT_DATA);
{ checkredefinesym(sym);}
{ 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;
{ checkredefinesym(sym);}
size:=siz;
is_global:=(sym.defbind=AB_GLOBAL);
end;
constructor tai_symbol.Createname(const _name : string;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymboltype(_name,AB_LOCAL,AT_FUNCTION);
{ checkredefinesym(sym);}
size:=siz;
is_global:=false;
end;
constructor tai_symbol.Createname_global(const _name : string;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymboltype(_name,AB_GLOBAL,AT_FUNCTION);
{ checkredefinesym(sym);}
size:=siz;
is_global:=true;
end;
constructor tai_symbol.Createdataname(const _name : string;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymboltype(_name,AB_LOCAL,AT_DATA);
{ checkredefinesym(sym);}
size:=siz;
is_global:=false;
end;
constructor tai_symbol.Createdataname_global(const _name : string;siz:longint);
begin
inherited Create;
typ:=ait_symbol;
sym:=objectlibrary.newasmsymboltype(_name,AB_GLOBAL,AT_DATA);
{ checkredefinesym(sym);}
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
****************************************************************************}
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.newasmsymboltype(_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_32bit(_value : longint);
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_OFFSET
****************************************************************************}
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:longint);
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.Createname(const name:string);
begin
inherited Create;
typ:=ait_const_symbol;
sym:=objectlibrary.newasmsymbol(name);
offset:=0;
{ update sym info }
sym.increfs;
end;
constructor tai_const_symbol.Createname_offset(const name:string;ofs:longint);
begin
inherited Create;
typ:=ait_const_symbol;
sym:=objectlibrary.newasmsymbol(name);
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);
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;
constructor tai_real_64bit.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
value:=ppufile.getreal;
end;
procedure tai_real_64bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(value);
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_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);
value:=ppufile.getreal;
end;
procedure tai_comp_64bit.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putreal(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;
{ checkredefinesym(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;
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;
allocation:=true;
reg:=r;
end;
constructor tai_regalloc.dealloc(r : tregister);
begin
inherited create;
typ:=ait_regalloc;
allocation:=false;
reg:=r;
end;
constructor tai_regalloc.ppuload(t:taitype;ppufile:tcompilerppufile);
begin
inherited ppuload(t,ppufile);
reg:=tregister(ppufile.getbyte);
allocation:=boolean(ppufile.getbyte);
end;
procedure tai_regalloc.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(reg));
ppufile.putbyte(byte(allocation));
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 : longint;
begin
for i:=0 to ops-1 do
case oper[i].typ of
top_ref:
dispose(oper[i].ref);
end;
inherited destroy;
end;
{ ---------------------------------------------------------------------
Loading of operands.
---------------------------------------------------------------------}
procedure taicpu_abstract.loadconst(opidx:longint;l:aword);
begin
if opidx>=ops then
ops:=opidx+1;
with oper[opidx] do
begin
if typ=top_ref then
dispose(ref);
val:=l;
typ:=top_const;
end;
end;
procedure taicpu_abstract.loadsymbol(opidx:longint;s:tasmsymbol;sofs:longint);
begin
if not assigned(s) then
internalerror(200204251);
if opidx>=ops then
ops:=opidx+1;
with oper[opidx] do
begin
if typ=top_ref then
dispose(ref);
sym:=s;
symofs:=sofs;
typ:=top_symbol;
end;
s.increfs;
end;
procedure taicpu_abstract.loadref(opidx:longint;const r:treference);
begin
if opidx>=ops then
ops:=opidx+1;
with oper[opidx] do
begin
if typ<>top_ref then
new(ref);
ref^:=r;
{$ifdef i386}
{ We allow this exception for i386, since overloading this would be
too much of a a speed penalty}
if not(ref^.segment in [R_DS,R_NO]) then
segprefix:=ref^.segment;
{$endif}
typ:=top_ref;
{ mark symbol as used }
if assigned(ref^.symbol) then
ref^.symbol.increfs;
end;
end;
procedure taicpu_abstract.loadreg(opidx:longint;r:tregister);
begin
if opidx>=ops then
ops:=opidx+1;
with oper[opidx] do
begin
if typ=top_ref then
dispose(ref);
reg:=r;
typ:=top_reg;
end;
end;
procedure taicpu_abstract.loadoper(opidx:longint;o:toper);
begin
if opidx>=ops then
ops:=opidx+1;
if oper[opidx].typ=top_ref then
dispose(oper[opidx].ref);
oper[opidx]:=o;
{ copy also the reference }
if oper[opidx].typ=top_ref then
begin
new(oper[opidx].ref);
oper[opidx].ref^:=o.ref^;
end;
end;
{ ---------------------------------------------------------------------
Miscellaneous methods.
---------------------------------------------------------------------}
procedure taicpu_abstract.SetCondition(const c:TAsmCond);
begin
condition:=c;
end;
Function taicpu_abstract.getcopy:TLinkedListItem;
var
i : longint;
p : TLinkedListItem;
begin
p:=inherited getcopy;
{ make a copy of the references }
for i:=1 to ops do
if (taicpu_abstract(p).oper[i-1].typ=top_ref) then
begin
new(taicpu_abstract(p).oper[i-1].ref);
taicpu_abstract(p).oper[i-1].ref^:=oper[i-1].ref^;
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));
ops:=ppufile.getbyte;
for i:=1 to ops do
ppuloadoper(ppufile,oper[i-1]);
opcode:=tasmop(ppufile.getword);
{$ifdef i386}
segprefix:=tregister(ppufile.getbyte);
{$endif i386}
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:=1 to ops do
ppuwriteoper(ppufile,oper[i-1]);
ppufile.putword(word(opcode));
{$ifdef i386}
ppufile.putbyte(byte(segprefix));
{$endif i386}
ppufile.putbyte(byte(is_jmp));
end;
procedure taicpu_abstract.derefimpl;
var
i : integer;
begin
for i:=1 to ops do
ppuderefoper(oper[i-1]);
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
*****************************************************************************}
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;
end.
{
$Log$
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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