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fb1a842118
activated by defining 'newst', but doesn't compile yet. Changes in type checking and oop are completed. What is left is to write a new symtablestack and adapt the parser to use it.
334 lines
8.3 KiB
ObjectPascal
334 lines
8.3 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Peter Vreman
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This unit implements support import,export,link routines
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for the (i386) Go32v2 target
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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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unit t_go32v2;
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interface
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uses
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link;
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type
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plinkergo32v2=^tlinkergo32v2;
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tlinkergo32v2=object(tlinker)
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private
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Function WriteResponseFile(isdll:boolean) : Boolean;
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public
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constructor Init;
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procedure SetDefaultInfo;virtual;
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function MakeExecutable:boolean;virtual;
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end;
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implementation
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uses
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strings,globtype,globals,cobjects,systems,verbose,script,files;
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{****************************************************************************
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TLinkerGo32v2
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****************************************************************************}
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Constructor TLinkerGo32v2.Init;
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begin
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Inherited Init;
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{ allow duplicated libs (PM) }
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SharedLibFiles.doubles:=true;
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StaticLibFiles.doubles:=true;
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end;
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procedure TLinkerGo32v2.SetDefaultInfo;
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begin
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with Info do
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begin
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ExeCmd[1]:='ld -oformat coff-go32-exe $OPT $STRIP -o $EXE @$RES';
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end;
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end;
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Function TLinkerGo32v2.WriteResponseFile(isdll:boolean) : Boolean;
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Var
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linkres : TLinkRes;
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i : longint;
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{$IFDEF NEWST}
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HPath : PStringItem;
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{$ELSE}
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HPath : PStringQueueItem;
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{$ENDIF NEWST}
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s : string;
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linklibc : boolean;
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begin
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WriteResponseFile:=False;
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{ Open link.res file }
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LinkRes.Init(outputexedir+Info.ResName);
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{ Write path to search libraries }
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HPath:=current_module^.locallibrarysearchpath.First;
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while assigned(HPath) do
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begin
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LinkRes.Add('-L'+GetShortName(HPath^.Data^));
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HPath:=HPath^.Next;
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end;
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HPath:=LibrarySearchPath.First;
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while assigned(HPath) do
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begin
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LinkRes.Add('-L'+GetShortName(HPath^.Data^));
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HPath:=HPath^.Next;
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end;
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{ add objectfiles, start with prt0 always }
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LinkRes.AddFileName(GetShortName(FindObjectFile('prt0')));
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while not ObjectFiles.Empty do
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begin
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s:=ObjectFiles.Get;
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if s<>'' then
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LinkRes.AddFileName(GetShortName(s));
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end;
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{ Write staticlibraries }
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if not StaticLibFiles.Empty then
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begin
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LinkRes.Add('-(');
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While not StaticLibFiles.Empty do
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begin
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S:=StaticLibFiles.Get;
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LinkRes.AddFileName(GetShortName(s))
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end;
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LinkRes.Add('-)');
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end;
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{ Write sharedlibraries like -l<lib>, also add the needed dynamic linker
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here to be sure that it gets linked this is needed for glibc2 systems (PFV) }
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linklibc:=false;
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While not SharedLibFiles.Empty do
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begin
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S:=SharedLibFiles.Get;
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if s<>'c' then
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begin
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i:=Pos(target_os.sharedlibext,S);
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if i>0 then
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Delete(S,i,255);
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LinkRes.Add('-l'+s);
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end
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else
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begin
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LinkRes.Add('-l'+s);
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linklibc:=true;
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end;
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end;
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{ be sure that libc&libgcc is the last lib }
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if linklibc then
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begin
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LinkRes.Add('-lc');
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LinkRes.Add('-lgcc');
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end;
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{ Write and Close response }
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linkres.writetodisk;
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linkres.done;
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WriteResponseFile:=True;
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end;
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function TLinkerGo32v2.MakeExecutable:boolean;
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var
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binstr,
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cmdstr : string;
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success : boolean;
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StripStr : string[40];
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begin
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if not(cs_link_extern in aktglobalswitches) then
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Message1(exec_i_linking,current_module^.exefilename^);
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{ Create some replacements }
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StripStr:='';
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if (cs_link_strip in aktglobalswitches) then
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StripStr:='-s';
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{ Write used files and libraries }
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WriteResponseFile(false);
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{ Call linker }
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SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
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Replace(cmdstr,'$EXE',current_module^.exefilename^);
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Replace(cmdstr,'$OPT',Info.ExtraOptions);
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Replace(cmdstr,'$RES',outputexedir+Info.ResName);
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Replace(cmdstr,'$STRIP',StripStr);
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success:=DoExec(FindUtil(BinStr),cmdstr,true,false);
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{ Remove ReponseFile }
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if (success) and not(cs_link_extern in aktglobalswitches) then
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RemoveFile(outputexedir+Info.ResName);
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MakeExecutable:=success; { otherwise a recursive call to link method }
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end;
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{$ifdef notnecessary}
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procedure tlinkergo32v2.postprocessexecutable(const n : string);
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type
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tcoffheader=packed record
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mach : word;
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nsects : word;
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time : longint;
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sympos : longint;
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syms : longint;
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opthdr : word;
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flag : word;
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end;
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tcoffsechdr=packed record
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name : array[0..7] of char;
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vsize : longint;
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rvaofs : longint;
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datalen : longint;
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datapos : longint;
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relocpos : longint;
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lineno1 : longint;
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nrelocs : word;
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lineno2 : word;
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flags : longint;
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end;
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psecfill=^tsecfill;
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tsecfill=record
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fillpos,
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fillsize : longint;
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next : psecfill;
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end;
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var
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f : file;
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coffheader : tcoffheader;
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firstsecpos,
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maxfillsize,
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l : longint;
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coffsec : tcoffsechdr;
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secroot,hsecroot : psecfill;
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zerobuf : pointer;
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begin
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{ when -s is used quit, because there is no .exe }
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if cs_link_extern in aktglobalswitches then
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exit;
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{ open file }
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assign(f,n);
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{$I-}
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reset(f,1);
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if ioresult<>0 then
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Message1(execinfo_f_cant_open_executable,n);
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{ read headers }
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seek(f,2048);
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blockread(f,coffheader,sizeof(tcoffheader));
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{ read section info }
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maxfillsize:=0;
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firstsecpos:=0;
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secroot:=nil;
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for l:=1to coffheader.nSects do
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begin
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blockread(f,coffsec,sizeof(tcoffsechdr));
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if coffsec.datapos>0 then
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begin
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if secroot=nil then
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firstsecpos:=coffsec.datapos;
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new(hsecroot);
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hsecroot^.fillpos:=coffsec.datapos+coffsec.vsize;
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hsecroot^.fillsize:=coffsec.datalen-coffsec.vsize;
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hsecroot^.next:=secroot;
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secroot:=hsecroot;
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if secroot^.fillsize>maxfillsize then
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maxfillsize:=secroot^.fillsize;
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end;
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end;
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if firstsecpos>0 then
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begin
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l:=firstsecpos-filepos(f);
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if l>maxfillsize then
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maxfillsize:=l;
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end
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else
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l:=0;
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{ get zero buffer }
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getmem(zerobuf,maxfillsize);
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fillchar(zerobuf^,maxfillsize,0);
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{ zero from sectioninfo until first section }
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blockwrite(f,zerobuf^,l);
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{ zero section alignments }
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while assigned(secroot) do
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begin
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seek(f,secroot^.fillpos);
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blockwrite(f,zerobuf^,secroot^.fillsize);
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hsecroot:=secroot;
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secroot:=secroot^.next;
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dispose(hsecroot);
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end;
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freemem(zerobuf,maxfillsize);
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close(f);
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{$I+}
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i:=ioresult;
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postprocessexecutable:=true;
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end;
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{$endif}
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end.
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{
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$Log$
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Revision 1.10 2000-02-28 17:23:57 daniel
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* Current work of symtable integration committed. The symtable can be
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activated by defining 'newst', but doesn't compile yet. Changes in type
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checking and oop are completed. What is left is to write a new
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symtablestack and adapt the parser to use it.
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Revision 1.9 2000/02/09 13:23:06 peter
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* log truncated
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Revision 1.8 2000/01/09 00:55:51 pierre
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* GROUP of smartlink units put before the C libraries
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to allow for smartlinking code that uses C code.
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Revision 1.7 2000/01/07 01:14:42 peter
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* updated copyright to 2000
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Revision 1.6 1999/12/06 18:21:04 peter
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* support !ENVVAR for long commandlines
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* win32/go32v2 write short pathnames to link.res so c:\Program Files\ is
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finally supported as installdir.
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Revision 1.5 1999/11/16 23:39:04 peter
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* use outputexedir for link.res location
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Revision 1.4 1999/11/12 11:03:50 peter
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* searchpaths changed to stringqueue object
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Revision 1.3 1999/11/04 10:55:31 peter
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* TSearchPathString for the string type of the searchpaths, which is
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ansistring under FPC/Delphi
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Revision 1.2 1999/10/22 14:42:40 peter
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* reset linklibc
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Revision 1.1 1999/10/21 14:29:38 peter
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* redesigned linker object
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+ library support for linux (only procedures can be exported)
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}
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