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1482 lines
44 KiB
ObjectPascal
1482 lines
44 KiB
ObjectPascal
{
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Copyright (c) 1998-2004 by Peter Vreman
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This unit handles the assemblerfile write and assembler calls of FPC
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{# @abstract(This unit handles the assembler file write and assembler calls of FPC)
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Handles the calls to the actual external assemblers, as well as the generation
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of object files for smart linking. Also contains the base class for writing
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the assembler statements to file.
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}
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unit assemble;
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{$i fpcdefs.inc}
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interface
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uses
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{$IFDEF USE_SYSUTILS}
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sysutils,
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{$ELSE USE_SYSUTILS}
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strings,
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dos,
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{$ENDIF USE_SYSUTILS}
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systems,globtype,globals,aasmbase,aasmtai,ogbase;
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const
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{ maximum of aasmoutput lists there will be }
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maxoutputlists = 20;
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{ buffer size for writing the .s file }
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AsmOutSize=32768;
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type
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TAssembler=class(TAbstractAssembler)
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public
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{filenames}
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path : pathstr;
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name : namestr;
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asmfile, { current .s and .o file }
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objfile : string;
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ppufilename : string;
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asmprefix : string;
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SmartAsm : boolean;
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SmartFilesCount,
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SmartHeaderCount : longint;
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Constructor Create(smart:boolean);virtual;
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Destructor Destroy;override;
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procedure NextSmartName(place:tcutplace);
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procedure MakeObject;virtual;abstract;
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end;
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{# This is the base class which should be overriden for each each
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assembler writer. It is used to actually assembler a file,
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and write the output to the assembler file.
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}
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TExternalAssembler=class(TAssembler)
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private
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procedure CreateSmartLinkPath(const s:string);
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protected
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{outfile}
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AsmSize,
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AsmStartSize,
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outcnt : longint;
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outbuf : array[0..AsmOutSize-1] of char;
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outfile : file;
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ioerror : boolean;
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public
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{# Returns the complete path and executable name of the assembler
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program.
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It first tries looking in the UTIL directory if specified,
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otherwise it searches in the free pascal binary directory, in
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the current working directory and then in the directories
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in the $PATH environment.}
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Function FindAssembler:string;
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{# Actually does the call to the assembler file. Returns false
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if the assembling of the file failed.}
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Function CallAssembler(const command:string; const para:TCmdStr):Boolean;
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Function DoAssemble:boolean;virtual;
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Procedure RemoveAsm;
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Procedure AsmFlush;
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Procedure AsmClear;
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{# Write a string to the assembler file }
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Procedure AsmWrite(const s:string);
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{# Write a string to the assembler file }
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Procedure AsmWritePChar(p:pchar);
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{# Write a string to the assembler file followed by a new line }
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Procedure AsmWriteLn(const s:string);
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{# Write a new line to the assembler file }
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Procedure AsmLn;
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procedure AsmCreate(Aplace:tcutplace);
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procedure AsmClose;
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{# This routine should be overriden for each assembler, it is used
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to actually write the abstract assembler stream to file.}
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procedure WriteTree(p:TAAsmoutput);virtual;
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{# This routine should be overriden for each assembler, it is used
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to actually write all the different abstract assembler streams
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by calling for each stream type, the @var(WriteTree) method.}
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procedure WriteAsmList;virtual;
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public
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Constructor Create(smart:boolean);override;
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procedure MakeObject;override;
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end;
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TInternalAssembler=class(TAssembler)
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public
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constructor create(smart:boolean);override;
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destructor destroy;override;
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procedure MakeObject;override;
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protected
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objectdata : TAsmObjectData;
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objectoutput : tobjectoutput;
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private
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{ the aasmoutput lists that need to be processed }
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lists : byte;
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list : array[1..maxoutputlists] of TAAsmoutput;
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{ current processing }
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currlistidx : byte;
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currlist : TAAsmoutput;
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currpass : byte;
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procedure convertstab(p:pchar);
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function MaybeNextList(var hp:Tai):boolean;
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function TreePass0(hp:Tai):Tai;
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function TreePass1(hp:Tai):Tai;
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function TreePass2(hp:Tai):Tai;
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procedure writetree;
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procedure writetreesmart;
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end;
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TAssemblerClass = class of TAssembler;
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Procedure GenerateAsm(smart:boolean);
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Procedure OnlyAsm;
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procedure RegisterAssembler(const r:tasminfo;c:TAssemblerClass);
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procedure InitAssembler;
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procedure DoneAssembler;
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Implementation
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uses
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{$ifdef hasunix}
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{$ifdef havelinuxrtl10}
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linux,
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{$else}
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unix,
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{$endif}
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{$endif}
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cutils,script,fmodule,verbose,
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{$ifdef memdebug}
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cclasses,
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{$endif memdebug}
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{$ifdef m68k}
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cpuinfo,
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{$endif m68k}
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aasmcpu
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;
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var
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CAssembler : array[tasm] of TAssemblerClass;
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{*****************************************************************************
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TAssembler
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*****************************************************************************}
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Constructor TAssembler.Create(smart:boolean);
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begin
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{ load start values }
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asmfile:=current_module.get_asmfilename;
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objfile:=current_module.objfilename^;
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name:=Lower(current_module.modulename^);
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path:=current_module.outputpath^;
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asmprefix := current_module.asmprefix^;
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if not assigned(current_module.outputpath) then
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ppufilename := ''
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else
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ppufilename := current_module.ppufilename^;
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SmartAsm:=smart;
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SmartFilesCount:=0;
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SmartHeaderCount:=0;
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SmartLinkOFiles.Clear;
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end;
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Destructor TAssembler.Destroy;
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begin
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end;
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procedure TAssembler.NextSmartName(place:tcutplace);
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var
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s : string;
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begin
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inc(SmartFilesCount);
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if SmartFilesCount>999999 then
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Message(asmw_f_too_many_asm_files);
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case place of
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cut_begin :
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begin
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inc(SmartHeaderCount);
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s:=asmprefix+tostr(SmartHeaderCount)+'h';
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end;
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cut_normal :
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s:=asmprefix+tostr(SmartHeaderCount)+'s';
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cut_end :
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s:=asmprefix+tostr(SmartHeaderCount)+'t';
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end;
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AsmFile:=Path+FixFileName(s+tostr(SmartFilesCount)+target_info.asmext);
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ObjFile:=Path+FixFileName(s+tostr(SmartFilesCount)+target_info.objext);
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{ insert in container so it can be cleared after the linking }
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SmartLinkOFiles.Insert(Objfile);
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end;
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{*****************************************************************************
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TExternalAssembler
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*****************************************************************************}
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Function DoPipe:boolean;
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begin
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DoPipe:=(cs_asm_pipe in aktglobalswitches) and
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not(cs_asm_leave in aktglobalswitches)
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and ((target_asm.id in [as_gas,as_darwin]));
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end;
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Constructor TExternalAssembler.Create(smart:boolean);
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begin
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inherited Create(smart);
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if SmartAsm then
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begin
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path:=FixPath(path+FixFileName(name)+target_info.smartext,false);
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CreateSmartLinkPath(path);
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end;
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Outcnt:=0;
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end;
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procedure TExternalAssembler.CreateSmartLinkPath(const s:string);
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var
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{$IFDEF USE_SYSUTILS}
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dir : TSearchRec;
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{$ELSE USE_SYSUTILS}
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dir : searchrec;
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{$ENDIF USE_SYSUTILS}
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hs : string;
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begin
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if PathExists(s) then
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begin
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{ the path exists, now we clean only all the .o and .s files }
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{ .o files }
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{$IFDEF USE_SYSUTILS}
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if findfirst(s+source_info.dirsep+'*'+target_info.objext,faAnyFile,dir) = 0
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then repeat
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RemoveFile(s+source_info.dirsep+dir.name);
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until findnext(dir) <> 0;
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{$ELSE USE_SYSUTILS}
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findfirst(s+source_info.dirsep+'*'+target_info.objext,anyfile,dir);
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while (doserror=0) do
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begin
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RemoveFile(s+source_info.dirsep+dir.name);
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findnext(dir);
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end;
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{$ENDIF USE_SYSUTILS}
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findclose(dir);
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{ .s files }
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{$IFDEF USE_SYSUTILS}
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if findfirst(s+source_info.dirsep+'*'+target_info.asmext,faAnyFile,dir) = 0
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then repeat
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RemoveFile(s+source_info.dirsep+dir.name);
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until findnext(dir) <> 0;
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{$ELSE USE_SYSUTILS}
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findfirst(s+source_info.dirsep+'*'+target_info.asmext,anyfile,dir);
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while (doserror=0) do
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begin
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RemoveFile(s+source_info.dirsep+dir.name);
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findnext(dir);
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end;
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{$ENDIF USE_SYSUTILS}
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findclose(dir);
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end
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else
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begin
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hs:=s;
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if hs[length(hs)] in ['/','\'] then
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delete(hs,length(hs),1);
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{$I-}
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mkdir(hs);
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{$I+}
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if ioresult<>0 then;
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end;
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end;
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const
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lastas : byte=255;
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var
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LastASBin : pathstr;
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Function TExternalAssembler.FindAssembler:string;
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var
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asfound : boolean;
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UtilExe : string;
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begin
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asfound:=false;
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if cs_link_on_target in aktglobalswitches then
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begin
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{ If linking on target, don't add any path PM }
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FindAssembler:=utilsprefix+AddExtension(target_asm.asmbin,target_info.exeext);
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exit;
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end
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else
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UtilExe:=utilsprefix+AddExtension(target_asm.asmbin,source_info.exeext);
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if lastas<>ord(target_asm.id) then
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begin
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lastas:=ord(target_asm.id);
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{ is an assembler passed ? }
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if utilsdirectory<>'' then
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asfound:=FindFile(UtilExe,utilsdirectory,LastASBin);
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if not AsFound then
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asfound:=FindExe(UtilExe,LastASBin);
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if (not asfound) and not(cs_asm_extern in aktglobalswitches) then
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begin
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Message1(exec_e_assembler_not_found,LastASBin);
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aktglobalswitches:=aktglobalswitches+[cs_asm_extern];
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end;
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if asfound then
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Message1(exec_t_using_assembler,LastASBin);
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end;
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FindAssembler:=LastASBin;
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end;
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Function TExternalAssembler.CallAssembler(const command:string; const para:TCmdStr):Boolean;
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{$IFDEF USE_SYSUTILS}
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var
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DosExitCode:Integer;
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{$ENDIF USE_SYSUTILS}
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begin
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callassembler:=true;
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if not(cs_asm_extern in aktglobalswitches) then
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{$IFDEF USE_SYSUTILS}
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try
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DosExitCode := ExecuteProcess(command,para);
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if DosExitCode <>0
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then begin
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Message1(exec_e_error_while_assembling,tostr(dosexitcode));
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callassembler:=false;
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end;
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except on E:EOSError do
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begin
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Message1(exec_e_cant_call_assembler,tostr(E.ErrorCode));
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aktglobalswitches:=aktglobalswitches+[cs_asm_extern];
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callassembler:=false;
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end
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end
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{$ELSE USE_SYSUTILS}
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begin
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swapvectors;
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exec(maybequoted(command),para);
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swapvectors;
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if (doserror<>0) then
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begin
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Message1(exec_e_cant_call_assembler,tostr(doserror));
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aktglobalswitches:=aktglobalswitches+[cs_asm_extern];
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callassembler:=false;
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end
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else
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if (dosexitcode<>0) then
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begin
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Message1(exec_e_error_while_assembling,tostr(dosexitcode));
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callassembler:=false;
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end;
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end
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{$ENDIF USE_SYSUTILS}
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else
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AsmRes.AddAsmCommand(command,para,name);
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end;
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procedure TExternalAssembler.RemoveAsm;
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var
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g : file;
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begin
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if cs_asm_leave in aktglobalswitches then
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exit;
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if cs_asm_extern in aktglobalswitches then
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AsmRes.AddDeleteCommand(AsmFile)
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else
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begin
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assign(g,AsmFile);
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{$I-}
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erase(g);
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{$I+}
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if ioresult<>0 then;
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end;
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end;
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Function TExternalAssembler.DoAssemble:boolean;
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var
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s : TCmdStr;
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begin
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DoAssemble:=true;
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if DoPipe then
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exit;
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if not(cs_asm_extern in aktglobalswitches) then
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begin
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if SmartAsm then
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begin
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if (SmartFilesCount<=1) then
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Message1(exec_i_assembling_smart,name);
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end
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else
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Message1(exec_i_assembling,name);
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end;
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s:=target_asm.asmcmd;
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{$ifdef m68k}
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if aktoptprocessor = MC68020 then
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s:='-m68020 '+s
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else
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s:='-m68000 '+s;
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{$endif}
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if (cs_link_on_target in aktglobalswitches) then
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begin
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Replace(s,'$ASM',maybequoted(ScriptFixFileName(AsmFile)));
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Replace(s,'$OBJ',maybequoted(ScriptFixFileName(ObjFile)));
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end
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else
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begin
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Replace(s,'$ASM',maybequoted(AsmFile));
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Replace(s,'$OBJ',maybequoted(ObjFile));
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end;
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if CallAssembler(FindAssembler,s) then
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RemoveAsm
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else
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begin
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DoAssemble:=false;
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GenerateError;
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end;
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end;
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Procedure TExternalAssembler.AsmFlush;
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begin
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if outcnt>0 then
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begin
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{ suppress i/o error }
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{$i-}
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BlockWrite(outfile,outbuf,outcnt);
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{$i+}
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ioerror:=ioerror or (ioresult<>0);
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outcnt:=0;
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end;
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end;
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Procedure TExternalAssembler.AsmClear;
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begin
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outcnt:=0;
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end;
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Procedure TExternalAssembler.AsmWrite(const s:string);
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begin
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if OutCnt+length(s)>=AsmOutSize then
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AsmFlush;
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Move(s[1],OutBuf[OutCnt],length(s));
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inc(OutCnt,length(s));
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inc(AsmSize,length(s));
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end;
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Procedure TExternalAssembler.AsmWriteLn(const s:string);
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begin
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AsmWrite(s);
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AsmLn;
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end;
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Procedure TExternalAssembler.AsmWritePChar(p:pchar);
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var
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i,j : longint;
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begin
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i:=StrLen(p);
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j:=i;
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while j>0 do
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begin
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i:=min(j,AsmOutSize);
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if OutCnt+i>=AsmOutSize then
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AsmFlush;
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Move(p[0],OutBuf[OutCnt],i);
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inc(OutCnt,i);
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inc(AsmSize,i);
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dec(j,i);
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p:=pchar(@p[i]);
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end;
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end;
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Procedure TExternalAssembler.AsmLn;
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begin
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if OutCnt>=AsmOutSize-2 then
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AsmFlush;
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if (cs_link_on_target in aktglobalswitches) then
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begin
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OutBuf[OutCnt]:=target_info.newline[1];
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inc(OutCnt);
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inc(AsmSize);
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if length(target_info.newline)>1 then
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begin
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OutBuf[OutCnt]:=target_info.newline[2];
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inc(OutCnt);
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inc(AsmSize);
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end;
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end
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else
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begin
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OutBuf[OutCnt]:=source_info.newline[1];
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inc(OutCnt);
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inc(AsmSize);
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if length(source_info.newline)>1 then
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begin
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OutBuf[OutCnt]:=source_info.newline[2];
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inc(OutCnt);
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inc(AsmSize);
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end;
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end;
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end;
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|
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procedure TExternalAssembler.AsmCreate(Aplace:tcutplace);
|
|
begin
|
|
if SmartAsm then
|
|
NextSmartName(Aplace);
|
|
{$ifdef hasunix}
|
|
if DoPipe then
|
|
begin
|
|
Message1(exec_i_assembling_pipe,asmfile);
|
|
POpen(outfile,'as -o '+objfile,'W');
|
|
end
|
|
else
|
|
{$endif}
|
|
begin
|
|
Assign(outfile,asmfile);
|
|
{$I-}
|
|
Rewrite(outfile,1);
|
|
{$I+}
|
|
if ioresult<>0 then
|
|
begin
|
|
ioerror:=true;
|
|
Message1(exec_d_cant_create_asmfile,asmfile);
|
|
end;
|
|
end;
|
|
outcnt:=0;
|
|
AsmSize:=0;
|
|
AsmStartSize:=0;
|
|
end;
|
|
|
|
|
|
procedure TExternalAssembler.AsmClose;
|
|
var
|
|
f : file;
|
|
FileAge : longint;
|
|
begin
|
|
AsmFlush;
|
|
{$ifdef hasunix}
|
|
if DoPipe then
|
|
begin
|
|
if PClose(outfile) <> 0 then
|
|
GenerateError;
|
|
end
|
|
else
|
|
{$endif}
|
|
begin
|
|
{Touch Assembler time to ppu time is there is a ppufilename}
|
|
if ppufilename<>'' then
|
|
begin
|
|
Assign(f,ppufilename);
|
|
{$I-}
|
|
reset(f,1);
|
|
{$I+}
|
|
if ioresult=0 then
|
|
begin
|
|
{$IFDEF USE_SYSUTILS}
|
|
FileAge := FileGetDate(GetFileHandle(f));
|
|
{$ELSE USE_SYSUTILS}
|
|
GetFTime(f, FileAge);
|
|
{$ENDIF USE_SYSUTILS}
|
|
close(f);
|
|
reset(outfile,1);
|
|
{$IFDEF USE_SYSUTILS}
|
|
FileSetDate(GetFileHandle(outFile),FileAge);
|
|
{$ELSE USE_SYSUTILS}
|
|
SetFTime(f, FileAge);
|
|
{$ENDIF USE_SYSUTILS}
|
|
end;
|
|
end;
|
|
close(outfile);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TExternalAssembler.WriteTree(p:TAAsmoutput);
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure TExternalAssembler.WriteAsmList;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure TExternalAssembler.MakeObject;
|
|
begin
|
|
AsmCreate(cut_normal);
|
|
WriteAsmList;
|
|
AsmClose;
|
|
if not(ioerror) then
|
|
DoAssemble;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TInternalAssembler
|
|
*****************************************************************************}
|
|
|
|
constructor TInternalAssembler.create(smart:boolean);
|
|
begin
|
|
inherited create(smart);
|
|
objectoutput:=nil;
|
|
objectdata:=nil;
|
|
SmartAsm:=smart;
|
|
currpass:=0;
|
|
end;
|
|
|
|
|
|
destructor TInternalAssembler.destroy;
|
|
{$ifdef MEMDEBUG}
|
|
var
|
|
d : tmemdebug;
|
|
{$endif}
|
|
begin
|
|
{$ifdef MEMDEBUG}
|
|
d := tmemdebug.create(name+' - agbin');
|
|
{$endif}
|
|
objectdata.free;
|
|
objectoutput.free;
|
|
{$ifdef MEMDEBUG}
|
|
d.free;
|
|
{$endif}
|
|
end;
|
|
|
|
|
|
procedure TInternalAssembler.convertstab(p:pchar);
|
|
|
|
function consumecomma(var p:pchar):boolean;
|
|
begin
|
|
while (p^=' ') do
|
|
inc(p);
|
|
result:=(p^=',');
|
|
inc(p);
|
|
end;
|
|
|
|
function consumenumber(var p:pchar;out value:longint):boolean;
|
|
var
|
|
hs : string;
|
|
len,
|
|
code : integer;
|
|
begin
|
|
value:=0;
|
|
while (p^=' ') do
|
|
inc(p);
|
|
len:=0;
|
|
while (p^ in ['0'..'9']) do
|
|
begin
|
|
inc(len);
|
|
hs[len]:=p^;
|
|
inc(p);
|
|
end;
|
|
if len>0 then
|
|
begin
|
|
hs[0]:=chr(len);
|
|
val(hs,value,code);
|
|
end
|
|
else
|
|
code:=-1;
|
|
result:=(code=0);
|
|
end;
|
|
|
|
function consumeoffset(var p:pchar;out relocsym:tasmsymbol;out value:longint):boolean;
|
|
var
|
|
hs : string;
|
|
len,
|
|
code : integer;
|
|
pstart : pchar;
|
|
sym : tasmsymbol;
|
|
exprvalue : longint;
|
|
gotmin,
|
|
dosub : boolean;
|
|
begin
|
|
result:=false;
|
|
value:=0;
|
|
relocsym:=nil;
|
|
gotmin:=false;
|
|
repeat
|
|
dosub:=false;
|
|
exprvalue:=0;
|
|
if gotmin then
|
|
begin
|
|
dosub:=true;
|
|
gotmin:=false;
|
|
end;
|
|
while (p^=' ') do
|
|
inc(p);
|
|
case p^ of
|
|
#0 :
|
|
break;
|
|
' ' :
|
|
inc(p);
|
|
'0'..'9' :
|
|
begin
|
|
len:=0;
|
|
while (p^ in ['0'..'9']) do
|
|
begin
|
|
inc(len);
|
|
hs[len]:=p^;
|
|
inc(p);
|
|
end;
|
|
hs[0]:=chr(len);
|
|
val(hs,exprvalue,code);
|
|
end;
|
|
'.','_',
|
|
'A'..'Z',
|
|
'a'..'z' :
|
|
begin
|
|
pstart:=p;
|
|
while not(p^ in [#0,' ','-','+']) do
|
|
inc(p);
|
|
len:=p-pstart;
|
|
if len>255 then
|
|
internalerror(200509187);
|
|
move(pstart^,hs[1],len);
|
|
hs[0]:=chr(len);
|
|
sym:=objectlibrary.newasmsymbol(hs,AB_EXTERNAL,AT_NONE);
|
|
if not assigned(sym) then
|
|
internalerror(200509188);
|
|
objectlibrary.UsedAsmSymbolListInsert(sym);
|
|
{ Second symbol? }
|
|
if assigned(relocsym) then
|
|
begin
|
|
if (relocsym.section<>sym.section) then
|
|
internalerror(2005091810);
|
|
relocsym:=nil;
|
|
end
|
|
else
|
|
begin
|
|
relocsym:=sym;
|
|
end;
|
|
exprvalue:=sym.address;
|
|
end;
|
|
'+' :
|
|
begin
|
|
{ nothing, by default addition is done }
|
|
inc(p);
|
|
end;
|
|
'-' :
|
|
begin
|
|
gotmin:=true;
|
|
inc(p);
|
|
end;
|
|
else
|
|
internalerror(200509189);
|
|
end;
|
|
if dosub then
|
|
dec(value,exprvalue)
|
|
else
|
|
inc(value,exprvalue);
|
|
until false;
|
|
result:=true;
|
|
end;
|
|
|
|
const
|
|
N_Function = $24; { function or const }
|
|
var
|
|
ofs,
|
|
nline,
|
|
nidx,
|
|
nother,
|
|
i : longint;
|
|
relocsym : tasmsymbol;
|
|
pstr,
|
|
pcurr,
|
|
pendquote : pchar;
|
|
begin
|
|
pcurr:=nil;
|
|
pstr:=nil;
|
|
pendquote:=nil;
|
|
|
|
{ Parse string part }
|
|
if p[0]='"' then
|
|
begin
|
|
pstr:=@p[1];
|
|
{ Ignore \" inside the string }
|
|
i:=1;
|
|
while not((p[i]='"') and (p[i-1]<>'\')) and
|
|
(p[i]<>#0) do
|
|
inc(i);
|
|
pendquote:=@p[i];
|
|
pendquote^:=#0;
|
|
pcurr:=@p[i+1];
|
|
if not consumecomma(pcurr) then
|
|
internalerror(200509181);
|
|
end
|
|
else
|
|
pcurr:=p;
|
|
|
|
{ When in pass 1 then only alloc and leave }
|
|
if currpass=1 then
|
|
objectdata.allocstab(pstr)
|
|
else
|
|
begin
|
|
{ Stabs format: nidx,nother,nline[,offset] }
|
|
if not consumenumber(pcurr,nidx) then
|
|
internalerror(200509182);
|
|
if not consumecomma(pcurr) then
|
|
internalerror(200509183);
|
|
if not consumenumber(pcurr,nother) then
|
|
internalerror(200509184);
|
|
if not consumecomma(pcurr) then
|
|
internalerror(200509185);
|
|
if not consumenumber(pcurr,nline) then
|
|
internalerror(200509186);
|
|
if consumecomma(pcurr) then
|
|
consumeoffset(pcurr,relocsym,ofs)
|
|
else
|
|
begin
|
|
ofs:=0;
|
|
relocsym:=nil;
|
|
end;
|
|
if (nidx=N_Function) and
|
|
target_info.use_function_relative_addresses then
|
|
ofs:=0;
|
|
objectdata.writestab(ofs,relocsym,nidx,nother,nline,pstr);
|
|
end;
|
|
if assigned(pendquote) then
|
|
pendquote^:='"';
|
|
end;
|
|
|
|
|
|
function TInternalAssembler.MaybeNextList(var hp:Tai):boolean;
|
|
begin
|
|
{ maybe end of list }
|
|
while not assigned(hp) do
|
|
begin
|
|
if currlistidx<lists then
|
|
begin
|
|
inc(currlistidx);
|
|
currlist:=list[currlistidx];
|
|
hp:=Tai(currList.first);
|
|
end
|
|
else
|
|
begin
|
|
MaybeNextList:=false;
|
|
exit;
|
|
end;
|
|
end;
|
|
MaybeNextList:=true;
|
|
end;
|
|
|
|
|
|
function TInternalAssembler.TreePass0(hp:Tai):Tai;
|
|
var
|
|
l : longint;
|
|
begin
|
|
while assigned(hp) do
|
|
begin
|
|
case hp.typ of
|
|
ait_align :
|
|
begin
|
|
{ always use the maximum fillsize in this pass to avoid possible
|
|
short jumps to become out of range }
|
|
Tai_align(hp).fillsize:=Tai_align(hp).aligntype;
|
|
objectdata.alloc(Tai_align(hp).fillsize);
|
|
end;
|
|
ait_datablock :
|
|
begin
|
|
l:=used_align(size_2_align(Tai_datablock(hp).size),0,objectdata.currsec.addralign);
|
|
if SmartAsm or (not Tai_datablock(hp).is_global) then
|
|
begin
|
|
objectdata.allocalign(l);
|
|
objectdata.alloc(Tai_datablock(hp).size);
|
|
end;
|
|
end;
|
|
ait_real_80bit :
|
|
objectdata.alloc(10);
|
|
ait_real_64bit :
|
|
objectdata.alloc(8);
|
|
ait_real_32bit :
|
|
objectdata.alloc(4);
|
|
ait_comp_64bit :
|
|
objectdata.alloc(8);
|
|
ait_const_64bit,
|
|
ait_const_32bit,
|
|
ait_const_16bit,
|
|
ait_const_8bit,
|
|
ait_const_rva_symbol,
|
|
ait_const_indirect_symbol :
|
|
objectdata.alloc(tai_const(hp).size);
|
|
ait_section:
|
|
begin
|
|
objectdata.CreateSection(Tai_section(hp).sectype,Tai_section(hp).name^,Tai_section(hp).secalign,[]);
|
|
Tai_section(hp).sec:=objectdata.CurrSec;
|
|
end;
|
|
ait_symbol :
|
|
objectdata.allocsymbol(currpass,Tai_symbol(hp).sym,0);
|
|
ait_label :
|
|
objectdata.allocsymbol(currpass,Tai_label(hp).l,0);
|
|
ait_string :
|
|
objectdata.alloc(Tai_string(hp).len);
|
|
ait_instruction :
|
|
begin
|
|
{$ifdef i386}
|
|
{$ifndef NOAG386BIN}
|
|
{ reset instructions which could change in pass 2 }
|
|
Taicpu(hp).resetpass2;
|
|
objectdata.alloc(Taicpu(hp).Pass1(objectdata.currsec.datasize));
|
|
{$endif NOAG386BIN}
|
|
{$endif i386}
|
|
{$ifdef arm}
|
|
{ reset instructions which could change in pass 2 }
|
|
Taicpu(hp).resetpass2;
|
|
objectdata.alloc(Taicpu(hp).Pass1(objectdata.currsec.datasize));
|
|
{$endif arm}
|
|
end;
|
|
ait_cutobject :
|
|
if SmartAsm then
|
|
break;
|
|
end;
|
|
hp:=Tai(hp.next);
|
|
end;
|
|
TreePass0:=hp;
|
|
end;
|
|
|
|
|
|
function TInternalAssembler.TreePass1(hp:Tai):Tai;
|
|
var
|
|
InlineLevel,
|
|
l,
|
|
i : longint;
|
|
begin
|
|
inlinelevel:=0;
|
|
while assigned(hp) do
|
|
begin
|
|
case hp.typ of
|
|
ait_align :
|
|
begin
|
|
{ here we must determine the fillsize which is used in pass2 }
|
|
Tai_align(hp).fillsize:=align(objectdata.currsec.datasize,Tai_align(hp).aligntype)-
|
|
objectdata.currsec.datasize;
|
|
objectdata.alloc(Tai_align(hp).fillsize);
|
|
end;
|
|
ait_datablock :
|
|
begin
|
|
if not (objectdata.currsec.sectype in [sec_bss,sec_threadvar]) then
|
|
Message(asmw_e_alloc_data_only_in_bss);
|
|
l:=used_align(size_2_align(Tai_datablock(hp).size),0,objectdata.currsec.addralign);
|
|
{ if Tai_datablock(hp).is_global and
|
|
not SmartAsm then
|
|
begin}
|
|
{ objectdata.allocsymbol(currpass,Tai_datablock(hp).sym,Tai_datablock(hp).size);}
|
|
{ force to be common/external, must be after setaddress as that would
|
|
set it to AB_GLOBAL }
|
|
{ Tai_datablock(hp).sym.currbind:=AB_COMMON;
|
|
end
|
|
else
|
|
begin}
|
|
objectdata.allocalign(l);
|
|
objectdata.allocsymbol(currpass,Tai_datablock(hp).sym,Tai_datablock(hp).size);
|
|
objectdata.alloc(Tai_datablock(hp).size);
|
|
{ end;}
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_datablock(hp).sym);
|
|
end;
|
|
ait_real_80bit :
|
|
objectdata.alloc(10);
|
|
ait_real_64bit :
|
|
objectdata.alloc(8);
|
|
ait_real_32bit :
|
|
objectdata.alloc(4);
|
|
ait_comp_64bit :
|
|
objectdata.alloc(8);
|
|
ait_const_64bit,
|
|
ait_const_32bit,
|
|
ait_const_16bit,
|
|
ait_const_8bit,
|
|
ait_const_rva_symbol,
|
|
ait_const_indirect_symbol :
|
|
begin
|
|
objectdata.alloc(tai_const(hp).size);
|
|
if assigned(Tai_const(hp).sym) then
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_const(hp).sym);
|
|
if assigned(Tai_const(hp).endsym) then
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_const(hp).endsym);
|
|
end;
|
|
ait_section:
|
|
begin
|
|
{ use cached value }
|
|
objectdata.setsection(Tai_section(hp).sec);
|
|
end;
|
|
ait_stab :
|
|
begin
|
|
if assigned(Tai_stab(hp).str) then
|
|
convertstab(Tai_stab(hp).str);
|
|
end;
|
|
ait_function_name,
|
|
ait_force_line : ;
|
|
ait_symbol :
|
|
begin
|
|
objectdata.allocsymbol(currpass,Tai_symbol(hp).sym,0);
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_symbol(hp).sym);
|
|
end;
|
|
ait_symbol_end :
|
|
begin
|
|
if target_info.system in [system_i386_linux,system_i386_beos] then
|
|
begin
|
|
Tai_symbol_end(hp).sym.size:=objectdata.currsec.datasize-Tai_symbol_end(hp).sym.address;
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_symbol_end(hp).sym);
|
|
end;
|
|
end;
|
|
ait_label :
|
|
begin
|
|
objectdata.allocsymbol(currpass,Tai_label(hp).l,0);
|
|
objectlibrary.UsedAsmSymbolListInsert(Tai_label(hp).l);
|
|
end;
|
|
ait_string :
|
|
objectdata.alloc(Tai_string(hp).len);
|
|
ait_instruction :
|
|
begin
|
|
objectdata.alloc(Taicpu(hp).Pass1(objectdata.currsec.datasize));
|
|
{ fixup the references }
|
|
for i:=1 to Taicpu(hp).ops do
|
|
begin
|
|
with Taicpu(hp).oper[i-1]^ do
|
|
begin
|
|
case typ of
|
|
top_ref :
|
|
begin
|
|
if assigned(ref^.symbol) then
|
|
objectlibrary.UsedAsmSymbolListInsert(ref^.symbol);
|
|
if assigned(ref^.relsymbol) then
|
|
objectlibrary.UsedAsmSymbolListInsert(ref^.symbol);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
ait_cutobject :
|
|
if SmartAsm then
|
|
break;
|
|
ait_marker :
|
|
if tai_marker(hp).kind=InlineStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=InlineEnd then
|
|
dec(InlineLevel);
|
|
end;
|
|
hp:=Tai(hp.next);
|
|
end;
|
|
TreePass1:=hp;
|
|
end;
|
|
|
|
|
|
function TInternalAssembler.TreePass2(hp:Tai):Tai;
|
|
var
|
|
fillbuffer : tfillbuffer;
|
|
InlineLevel,
|
|
l : longint;
|
|
v : int64;
|
|
{$ifdef x86}
|
|
co : comp;
|
|
{$endif x86}
|
|
begin
|
|
inlinelevel:=0;
|
|
{ main loop }
|
|
while assigned(hp) do
|
|
begin
|
|
case hp.typ of
|
|
ait_align :
|
|
begin
|
|
if objectdata.currsec.sectype in [sec_bss,sec_threadvar] then
|
|
objectdata.alloc(Tai_align(hp).fillsize)
|
|
else
|
|
objectdata.writebytes(Tai_align(hp).calculatefillbuf(fillbuffer)^,Tai_align(hp).fillsize);
|
|
end;
|
|
ait_section :
|
|
begin
|
|
{ use cached value }
|
|
objectdata.setsection(Tai_section(hp).sec);
|
|
end;
|
|
ait_symbol :
|
|
begin
|
|
objectdata.writesymbol(Tai_symbol(hp).sym);
|
|
objectoutput.exportsymbol(Tai_symbol(hp).sym);
|
|
end;
|
|
ait_datablock :
|
|
begin
|
|
l:=used_align(size_2_align(Tai_datablock(hp).size),0,objectdata.currsec.addralign);
|
|
objectdata.writesymbol(Tai_datablock(hp).sym);
|
|
objectoutput.exportsymbol(Tai_datablock(hp).sym);
|
|
{ if SmartAsm or (not Tai_datablock(hp).is_global) then
|
|
begin}
|
|
objectdata.allocalign(l);
|
|
objectdata.alloc(Tai_datablock(hp).size);
|
|
{ end;}
|
|
end;
|
|
ait_real_80bit :
|
|
objectdata.writebytes(Tai_real_80bit(hp).value,10);
|
|
ait_real_64bit :
|
|
objectdata.writebytes(Tai_real_64bit(hp).value,8);
|
|
ait_real_32bit :
|
|
objectdata.writebytes(Tai_real_32bit(hp).value,4);
|
|
ait_comp_64bit :
|
|
begin
|
|
{$ifdef x86}
|
|
co:=comp(Tai_comp_64bit(hp).value);
|
|
objectdata.writebytes(co,8);
|
|
{$endif x86}
|
|
end;
|
|
ait_string :
|
|
objectdata.writebytes(Tai_string(hp).str^,Tai_string(hp).len);
|
|
ait_const_64bit,
|
|
ait_const_32bit,
|
|
ait_const_16bit,
|
|
ait_const_8bit :
|
|
begin
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if assigned(tai_const(hp).endsym) then
|
|
begin
|
|
if tai_const(hp).endsym.section<>tai_const(hp).sym.section then
|
|
internalerror(200404124);
|
|
v:=tai_const(hp).endsym.address-tai_const(hp).sym.address+Tai_const(hp).value;
|
|
objectdata.writebytes(v,tai_const(hp).size);
|
|
end
|
|
else
|
|
objectdata.writereloc(Tai_const(hp).value,Tai_const(hp).size,
|
|
Tai_const(hp).sym,RELOC_ABSOLUTE);
|
|
end
|
|
else
|
|
objectdata.writebytes(Tai_const(hp).value,tai_const(hp).size);
|
|
end;
|
|
ait_const_rva_symbol :
|
|
objectdata.writereloc(Tai_const(hp).value,sizeof(aint),Tai_const(hp).sym,RELOC_RVA);
|
|
ait_label :
|
|
begin
|
|
objectdata.writesymbol(Tai_label(hp).l);
|
|
{ exporting shouldn't be necessary as labels are local,
|
|
but it's better to be on the safe side (PFV) }
|
|
objectoutput.exportsymbol(Tai_label(hp).l);
|
|
end;
|
|
ait_instruction :
|
|
Taicpu(hp).Pass2(objectdata);
|
|
ait_stab :
|
|
convertstab(Tai_stab(hp).str);
|
|
ait_function_name,
|
|
ait_force_line : ;
|
|
ait_cutobject :
|
|
if SmartAsm then
|
|
break;
|
|
ait_marker :
|
|
if tai_marker(hp).kind=InlineStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=InlineEnd then
|
|
dec(InlineLevel);
|
|
end;
|
|
hp:=Tai(hp.next);
|
|
end;
|
|
TreePass2:=hp;
|
|
end;
|
|
|
|
|
|
procedure TInternalAssembler.writetree;
|
|
var
|
|
hp : Tai;
|
|
label
|
|
doexit;
|
|
begin
|
|
objectdata:=objectoutput.newobjectdata(Objfile);
|
|
{ reset the asmsymbol list }
|
|
objectlibrary.CreateUsedAsmsymbolList;
|
|
|
|
{ Pass 0 }
|
|
currpass:=0;
|
|
objectdata.createsection(sec_code,'',0,[]);
|
|
objectdata.beforealloc;
|
|
{ start with list 1 }
|
|
currlistidx:=1;
|
|
currlist:=list[currlistidx];
|
|
hp:=Tai(currList.first);
|
|
while assigned(hp) do
|
|
begin
|
|
hp:=TreePass0(hp);
|
|
MaybeNextList(hp);
|
|
end;
|
|
objectdata.afteralloc;
|
|
{ leave if errors have occured }
|
|
if errorcount>0 then
|
|
goto doexit;
|
|
|
|
{ Pass 1 }
|
|
currpass:=1;
|
|
objectdata.resetsections;
|
|
objectdata.beforealloc;
|
|
objectdata.createsection(sec_code,'',0,[]);
|
|
{ start with list 1 }
|
|
currlistidx:=1;
|
|
currlist:=list[currlistidx];
|
|
hp:=Tai(currList.first);
|
|
while assigned(hp) do
|
|
begin
|
|
hp:=TreePass1(hp);
|
|
MaybeNextList(hp);
|
|
end;
|
|
objectdata.createsection(sec_code,'',0,[]);
|
|
objectdata.afteralloc;
|
|
{ check for undefined labels and reset }
|
|
objectlibrary.UsedAsmSymbolListCheckUndefined;
|
|
|
|
{ leave if errors have occured }
|
|
if errorcount>0 then
|
|
goto doexit;
|
|
|
|
{ Pass 2 }
|
|
currpass:=2;
|
|
objectdata.resetsections;
|
|
objectdata.beforewrite;
|
|
objectdata.createsection(sec_code,'',0,[]);
|
|
{ start with list 1 }
|
|
currlistidx:=1;
|
|
currlist:=list[currlistidx];
|
|
hp:=Tai(currList.first);
|
|
while assigned(hp) do
|
|
begin
|
|
hp:=TreePass2(hp);
|
|
MaybeNextList(hp);
|
|
end;
|
|
objectdata.createsection(sec_code,'',0,[]);
|
|
objectdata.afterwrite;
|
|
|
|
{ don't write the .o file if errors have occured }
|
|
if errorcount=0 then
|
|
begin
|
|
{ write objectfile }
|
|
objectoutput.startobjectfile(ObjFile);
|
|
objectoutput.writeobjectfile(objectdata);
|
|
objectdata.free;
|
|
objectdata:=nil;
|
|
end;
|
|
|
|
doexit:
|
|
{ reset the used symbols back, must be after the .o has been
|
|
written }
|
|
objectlibrary.UsedAsmsymbolListReset;
|
|
objectlibrary.DestroyUsedAsmsymbolList;
|
|
end;
|
|
|
|
|
|
procedure TInternalAssembler.writetreesmart;
|
|
var
|
|
hp : Tai;
|
|
startsectype : TAsmSectionType;
|
|
place: tcutplace;
|
|
begin
|
|
NextSmartName(cut_normal);
|
|
objectdata:=objectoutput.newobjectdata(Objfile);
|
|
startsectype:=sec_code;
|
|
|
|
{ start with list 1 }
|
|
currlistidx:=1;
|
|
currlist:=list[currlistidx];
|
|
hp:=Tai(currList.first);
|
|
while assigned(hp) do
|
|
begin
|
|
{ reset the asmsymbol list }
|
|
objectlibrary.CreateUsedAsmSymbolList;
|
|
|
|
{ Pass 0 }
|
|
currpass:=0;
|
|
objectdata.resetsections;
|
|
objectdata.beforealloc;
|
|
objectdata.createsection(startsectype,'',0,[]);
|
|
TreePass0(hp);
|
|
objectdata.afteralloc;
|
|
{ leave if errors have occured }
|
|
if errorcount>0 then
|
|
exit;
|
|
|
|
{ Pass 1 }
|
|
currpass:=1;
|
|
objectdata.resetsections;
|
|
objectdata.beforealloc;
|
|
objectdata.createsection(startsectype,'',0,[]);
|
|
TreePass1(hp);
|
|
objectdata.afteralloc;
|
|
{ check for undefined labels }
|
|
objectlibrary.UsedAsmSymbolListCheckUndefined;
|
|
|
|
{ leave if errors have occured }
|
|
if errorcount>0 then
|
|
exit;
|
|
|
|
{ Pass 2 }
|
|
currpass:=2;
|
|
objectoutput.startobjectfile(Objfile);
|
|
objectdata.resetsections;
|
|
objectdata.beforewrite;
|
|
objectdata.createsection(startsectype,'',0,[]);
|
|
hp:=TreePass2(hp);
|
|
{ save section type for next loop, must be done before EndFileLineInfo
|
|
because that changes the section to sec_code }
|
|
startsectype:=objectdata.currsec.sectype;
|
|
objectdata.afterwrite;
|
|
{ leave if errors have occured }
|
|
if errorcount>0 then
|
|
exit;
|
|
|
|
{ write the current objectfile }
|
|
objectoutput.writeobjectfile(objectdata);
|
|
objectdata.free;
|
|
objectdata:=nil;
|
|
|
|
{ reset the used symbols back, must be after the .o has been
|
|
written }
|
|
objectlibrary.UsedAsmsymbolListReset;
|
|
objectlibrary.DestroyUsedAsmsymbolList;
|
|
|
|
{ end of lists? }
|
|
if not MaybeNextList(hp) then
|
|
break;
|
|
|
|
{ we will start a new objectfile so reset everything }
|
|
{ The place can still change in the next while loop, so don't init }
|
|
{ the writer yet (JM) }
|
|
if (hp.typ=ait_cutobject) then
|
|
place := Tai_cutobject(hp).place
|
|
else
|
|
place := cut_normal;
|
|
|
|
{ avoid empty files }
|
|
while assigned(hp) and
|
|
(Tai(hp).typ in [ait_marker,ait_comment,ait_section,ait_cutobject]) do
|
|
begin
|
|
if Tai(hp).typ=ait_section then
|
|
startsectype:=Tai_section(hp).sectype
|
|
else if (Tai(hp).typ=ait_cutobject) then
|
|
place:=Tai_cutobject(hp).place;
|
|
hp:=Tai(hp.next);
|
|
end;
|
|
{ there is a problem if startsectype is sec_none !! PM }
|
|
if startsectype=sec_none then
|
|
startsectype:=sec_code;
|
|
|
|
if not MaybeNextList(hp) then
|
|
break;
|
|
|
|
{ start next objectfile }
|
|
NextSmartName(place);
|
|
objectdata:=objectoutput.newobjectdata(Objfile);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TInternalAssembler.MakeObject;
|
|
|
|
var to_do:set of Tasmlist;
|
|
i:Tasmlist;
|
|
|
|
procedure addlist(p:TAAsmoutput);
|
|
begin
|
|
inc(lists);
|
|
list[lists]:=p;
|
|
end;
|
|
|
|
begin
|
|
to_do:=[low(Tasmlist)..high(Tasmlist)];
|
|
if usedeffileforexports then
|
|
exclude(to_do,al_exports);
|
|
{$warning TODO internal writer support for dwarf}
|
|
exclude(to_do,al_dwarf);
|
|
if not(tf_section_threadvars in target_info.flags) then
|
|
exclude(to_do,al_threadvars);
|
|
for i:=low(Tasmlist) to high(Tasmlist) do
|
|
if (i in to_do) and (asmlist[i]<>nil) then
|
|
addlist(asmlist[i]);
|
|
|
|
if SmartAsm then
|
|
writetreesmart
|
|
else
|
|
writetree;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Generate Assembler Files Main Procedure
|
|
*****************************************************************************}
|
|
|
|
Procedure GenerateAsm(smart:boolean);
|
|
var
|
|
a : TAssembler;
|
|
begin
|
|
if not assigned(CAssembler[target_asm.id]) then
|
|
Message(asmw_f_assembler_output_not_supported);
|
|
a:=CAssembler[target_asm.id].Create(smart);
|
|
a.MakeObject;
|
|
a.Free;
|
|
end;
|
|
|
|
|
|
Procedure OnlyAsm;
|
|
var
|
|
a : TExternalAssembler;
|
|
begin
|
|
a:=TExternalAssembler.Create(false);
|
|
a.DoAssemble;
|
|
a.Free;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Init/Done
|
|
*****************************************************************************}
|
|
|
|
procedure RegisterAssembler(const r:tasminfo;c:TAssemblerClass);
|
|
var
|
|
t : tasm;
|
|
begin
|
|
t:=r.id;
|
|
if assigned(asminfos[t]) then
|
|
writeln('Warning: Assembler is already registered!')
|
|
else
|
|
Getmem(asminfos[t],sizeof(tasminfo));
|
|
asminfos[t]^:=r;
|
|
CAssembler[t]:=c;
|
|
end;
|
|
|
|
|
|
procedure InitAssembler;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure DoneAssembler;
|
|
begin
|
|
end;
|
|
|
|
end.
|