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https://gitlab.com/freepascal.org/fpc/source.git
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358 lines
9.4 KiB
ObjectPascal
358 lines
9.4 KiB
ObjectPascal
{
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Copyright (c) 2016 by Free Pascal Development Team
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This unit implements support import, export, link routines
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for the m68k Atari 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_atari;
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{$i fpcdefs.inc}
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interface
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uses
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rescmn, comprsrc, link;
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type
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PLinkerAtari = ^TLinkerAtari;
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TLinkerAtari = class(texternallinker)
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private
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UseVLink: boolean;
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function WriteResponseFile(isdll: boolean): boolean;
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procedure SetAtariInfo;
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function MakeAtariExe: boolean;
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public
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constructor Create; override;
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procedure SetDefaultInfo; override;
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procedure InitSysInitUnitName; override;
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function MakeExecutable: boolean; override;
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end;
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implementation
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uses
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sysutils,cutils,cfileutl,cclasses,aasmbase,
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globtype,globals,systems,verbose,cscript,fmodule,i_atari;
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constructor TLinkerAtari.Create;
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begin
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UseVLink:=(cs_link_vlink in current_settings.globalswitches);
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Inherited Create;
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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 TLinkerAtari.SetAtariInfo;
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begin
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with Info do
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begin
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if not UseVLink then
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begin
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ExeCmd[1]:='ld $DYNLINK $FLAGS $OPT $STRIP $MAP -d -n -o $EXE -T $RES';
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end
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else
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begin
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ExeCmd[1]:='vlink -b '+ataritos_exe_format+' $FLAGS $GCSECTIONS $OPT $STRIP $MAP -o $EXE -T $RES';
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end;
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end;
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end;
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procedure TLinkerAtari.SetDefaultInfo;
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begin
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if target_info.system = system_m68k_Atari then
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SetAtariInfo;
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end;
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procedure TLinkerAtari.InitSysInitUnitName;
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begin
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sysinitunit:='si_prc';
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end;
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function TLinkerAtari.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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HPath : TCmdStrListItem;
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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:=TLinkRes.Create(outputexedir+Info.ResName,true);
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if UseVLink and (source_info.dirsep <> '/') then
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LinkRes.fForceUseForwardSlash:=true;
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{ Write path to search libraries }
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HPath:=TCmdStrListItem(current_module.locallibrarysearchpath.First);
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while assigned(HPath) do
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begin
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s:=HPath.Str;
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if (cs_link_on_target in current_settings.globalswitches) then
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s:=ScriptFixFileName(s);
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LinkRes.Add('-L'+s);
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HPath:=TCmdStrListItem(HPath.Next);
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end;
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HPath:=TCmdStrListItem(LibrarySearchPath.First);
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while assigned(HPath) do
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begin
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s:=HPath.Str;
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if s<>'' then
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LinkRes.Add('SEARCH_DIR("'+s+'")');
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HPath:=TCmdStrListItem(HPath.Next);
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end;
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if not UseVLink then
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begin
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LinkRes.Add('SECTIONS');
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LinkRes.Add('{');
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LinkRes.Add(' .text 0xe4:');
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LinkRes.Add(' {');
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LinkRes.Add(' CREATE_OBJECT_SYMBOLS');
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LinkRes.Add(' *(.text)');
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LinkRes.Add(' CONSTRUCTORS');
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LinkRes.Add(' _etext = .;');
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LinkRes.Add(' __etext = .;');
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LinkRes.Add(' }');
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LinkRes.Add(' .data :');
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LinkRes.Add(' {');
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LinkRes.Add(' *(.data)');
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LinkRes.Add(' _edata = .;');
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LinkRes.Add(' __edata = .;');
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LinkRes.Add(' }');
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LinkRes.Add(' .bss :');
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LinkRes.Add(' {');
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LinkRes.Add(' __bss_start = .;');
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LinkRes.Add(' *(.bss)');
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LinkRes.Add(' *(COMMON)');
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LinkRes.Add(' _end = .;');
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LinkRes.Add(' __end = .;');
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LinkRes.Add(' }');
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LinkRes.Add('}');
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end;
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if (UseVLink) and (ataritos_exe_format = 'aoutmint') then
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begin
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LinkRes.Add('SECTIONS {');
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LinkRes.Add(' . = 0xe4;');
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LinkRes.Add(' .text: {');
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LinkRes.Add(' *(.i* i* I*)');
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LinkRes.Add(' *(.t* t* T* .c* c* CODE*)');
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LinkRes.Add(' *(.f* f* F*)');
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LinkRes.Add(' _etext = .;');
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LinkRes.Add(' __etext = .;');
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LinkRes.Add(' . = ALIGN(4);');
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LinkRes.Add(' }');
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LinkRes.Add(' .data: {');
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LinkRes.Add(' PROVIDE(_LinkerDB = . + 0x8000);');
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LinkRes.Add(' PROVIDE(_SDA_BASE_ = . + 0x8000);');
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LinkRes.Add(' VBCC_CONSTRUCTORS');
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LinkRes.Add(' *(.rodata*)');
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LinkRes.Add(' *(.d* d* D*)');
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LinkRes.Add(' *(.sdata*)');
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LinkRes.Add(' *(__MERGED)');
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LinkRes.Add(' _edata = .;');
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LinkRes.Add(' __edata = .;');
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LinkRes.Add(' . = ALIGN(4);');
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LinkRes.Add(' }');
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LinkRes.Add(' .bss: {');
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LinkRes.Add(' *(.sbss*)');
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LinkRes.Add(' *(.scommon)');
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LinkRes.Add(' *(.b* b* B* .u* u* U*)');
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LinkRes.Add(' *(COMMON)');
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LinkRes.Add(' _end = ALIGN(4);');
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LinkRes.Add(' __end = ALIGN(4);');
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LinkRes.Add(' }');
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LinkRes.Add('}');;
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end;
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LinkRes.Add('INPUT (');
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{ add objectfiles, start with prt0 always }
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if not (target_info.system in systems_internal_sysinit) then
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begin
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s:=FindObjectFile('prt0','',false);
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LinkRes.AddFileName(maybequoted(s));
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end;
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while not ObjectFiles.Empty do
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begin
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s:=ObjectFiles.GetFirst;
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if s<>'' then
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begin
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{ vlink doesn't use SEARCH_DIR for object files }
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if UseVLink then
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s:=FindObjectFile(s,'',false);
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LinkRes.AddFileName(maybequoted(s));
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end;
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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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{ vlink doesn't need, and doesn't support GROUP }
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if not UseVLink then
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begin
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LinkRes.Add(')');
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LinkRes.Add('GROUP(');
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end;
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while not StaticLibFiles.Empty do
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begin
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S:=StaticLibFiles.GetFirst;
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LinkRes.AddFileName(maybequoted(s));
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end;
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end;
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if not UseVLink then
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begin
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LinkRes.Add(')');
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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.GetFirst;
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if s<>'c' then
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begin
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i:=Pos(target_info.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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end
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else
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begin
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while not SharedLibFiles.Empty do
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begin
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S:=SharedLibFiles.GetFirst;
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LinkRes.Add('lib'+s+target_info.staticlibext);
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end;
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LinkRes.Add(')');
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end;
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{ Write and Close response }
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linkres.writetodisk;
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linkres.free;
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WriteResponseFile:=True;
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end;
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function TLinkerAtari.MakeAtariExe: boolean;
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var
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BinStr,
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CmdStr : TCmdStr;
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StripStr: string[40];
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DynLinkStr : ansistring;
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GCSectionsStr : string;
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FlagsStr : string;
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MapStr: string;
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ExeName: string;
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begin
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StripStr:='';
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GCSectionsStr:='';
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DynLinkStr:='';
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MapStr:='';
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if UseVLink then
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FlagsStr:='-tos-flags '+tostr(ataritos_exe_flags)
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else
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FlagsStr:='--mprg-flags '+tostr(ataritos_exe_flags);
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if (cs_link_map in current_settings.globalswitches) then
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if UseVLink then
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MapStr:='-M'+maybequoted(ScriptFixFileName(current_module.mapfilename))
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else
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MapStr:='-Map '+maybequoted(ScriptFixFileName(current_module.mapfilename));
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if (cs_link_strip in current_settings.globalswitches) then
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StripStr:='-s';
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if rlinkpath<>'' then
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DynLinkStr:='--rpath-link '+rlinkpath;
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if UseVLink then
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begin
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if create_smartlink_sections then
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GCSectionsStr:='-gc-all -sc';
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end;
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ExeName:=current_module.exefilename;
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{ Call linker }
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SplitBinCmd(Info.ExeCmd[1],BinStr,CmdStr);
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binstr:=FindUtil(utilsprefix+BinStr);
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Replace(cmdstr,'$OPT',Info.ExtraOptions);
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Replace(cmdstr,'$EXE',maybequoted(ScriptFixFileName(ExeName)));
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Replace(cmdstr,'$RES',maybequoted(ScriptFixFileName(outputexedir+Info.ResName)));
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Replace(cmdstr,'$MAP',MapStr);
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Replace(cmdstr,'$FLAGS',FlagsStr);
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Replace(cmdstr,'$STRIP',StripStr);
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Replace(cmdstr,'$GCSECTIONS',GCSectionsStr);
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Replace(cmdstr,'$DYNLINK',DynLinkStr);
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MakeAtariExe:=DoExec(BinStr,CmdStr,true,false);
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end;
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function TLinkerAtari.MakeExecutable:boolean;
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var
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success : boolean;
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begin
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if not(cs_link_nolink in current_settings.globalswitches) then
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Message1(exec_i_linking,current_module.exefilename);
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{ Write used files and libraries }
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WriteResponseFile(false);
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success:=MakeAtariExe;
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{ Remove ReponseFile }
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if (success) and not(cs_link_nolink in current_settings.globalswitches) then
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DeleteFile(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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{*****************************************************************************
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Initialize
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*****************************************************************************}
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initialization
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RegisterLinker(ld_atari,TLinkerAtari);
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RegisterTarget(system_m68k_atari_info);
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end.
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