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335 lines
8.0 KiB
ObjectPascal
335 lines
8.0 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2004 by Karoly Balogh for Genesi S.a.r.l.
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System unit for MorphOS/PowerPC
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Uses parts of the Commodore Amiga/68k port by Carl Eric Codere
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and Nils Sjoholm
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MorphOS port was done on a free Pegasos II/G4 machine
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provided by Genesi S.a.r.l. <www.genesi.lu>
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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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.
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**********************************************************************}
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unit System;
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interface
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{$define FPC_IS_SYSTEM}
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{$I systemh.inc}
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const
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LineEnding = #10;
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LFNSupport = True;
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DirectorySeparator = '/';
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DriveSeparator = ':';
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PathSeparator = ';';
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maxExitCode = 255;
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MaxPathLen = 256;
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const
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UnusedHandle : LongInt = -1;
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StdInputHandle : LongInt = 0;
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StdOutputHandle : LongInt = 0;
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StdErrorHandle : LongInt = 0;
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FileNameCaseSensitive : Boolean = False;
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CtrlZMarksEOF: boolean = false; (* #26 not considered as end of file *)
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sLineBreak : string[1] = LineEnding;
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DefaultTextLineBreakStyle : TTextLineBreakStyle = tlbsLF;
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BreakOn : Boolean = True;
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var
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MOS_ExecBase : Pointer; external name '_ExecBase';
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MOS_DOSBase : Pointer;
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MOS_UtilityBase: Pointer;
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MOS_heapPool : Pointer; { pointer for the OS pool for growing the heap }
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MOS_origDir : LongInt; { original directory on startup }
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MOS_ambMsg : Pointer;
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MOS_ConName : PChar ='CON:10/30/620/100/FPC Console Output/AUTO/CLOSE/WAIT';
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MOS_ConHandle: LongInt;
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argc: LongInt;
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argv: PPChar;
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envp: PPChar;
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implementation
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{$I system.inc}
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{*****************************************************************************
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Misc. System Dependent Functions
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*****************************************************************************}
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procedure haltproc(e:longint);cdecl;external name '_haltproc';
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procedure System_exit;
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begin
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{ We must remove the CTRL-C FLAG here because halt }
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{ may call I/O routines, which in turn might call }
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{ halt, so a recursive stack crash }
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if BreakOn then begin
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if (SetSignal(0,0) and SIGBREAKF_CTRL_C)<>0 then
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SetSignal(0,SIGBREAKF_CTRL_C);
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end;
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{ Closing opened files }
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CloseList(MOS_fileList);
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{ Changing back to original directory if changed }
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if MOS_origDir<>0 then begin
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CurrentDir(MOS_origDir);
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end;
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if MOS_UtilityBase<>nil then CloseLibrary(MOS_UtilityBase);
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if MOS_DOSBase<>nil then CloseLibrary(MOS_DOSBase);
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if MOS_heapPool<>nil then DeletePool(MOS_heapPool);
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haltproc(ExitCode);
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end;
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{ Generates correct argument array on startup }
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procedure GenerateArgs;
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var
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argvlen : longint;
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procedure allocarg(idx,len:longint);
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var
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i,oldargvlen : longint;
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begin
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if idx>=argvlen then
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begin
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oldargvlen:=argvlen;
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argvlen:=(idx+8) and (not 7);
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sysreallocmem(argv,argvlen*sizeof(pointer));
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for i:=oldargvlen to argvlen-1 do
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argv[i]:=nil;
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end;
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ArgV [Idx] := SysAllocMem (Succ (Len));
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end;
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var
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count: word;
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start: word;
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localindex: word;
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p : pchar;
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temp : string;
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begin
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p:=GetArgStr;
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argvlen:=0;
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{ Set argv[0] }
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temp:=paramstr(0);
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allocarg(0,length(temp));
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move(temp[1],argv[0]^,length(temp));
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argv[0][length(temp)]:=#0;
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{ check if we're started from Ambient }
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if MOS_ambMsg<>nil then
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begin
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argc:=0;
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exit;
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end;
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{ Handle the other args }
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count:=0;
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{ first index is one }
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localindex:=1;
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while (p[count]<>#0) do
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begin
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while (p[count]=' ') or (p[count]=#9) or (p[count]=LineEnding) do inc(count);
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start:=count;
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while (p[count]<>#0) and (p[count]<>' ') and (p[count]<>#9) and (p[count]<>LineEnding) do inc(count);
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if (count-start>0) then
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begin
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allocarg(localindex,count-start);
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move(p[start],argv[localindex]^,count-start);
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argv[localindex][count-start]:=#0;
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inc(localindex);
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end;
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end;
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argc:=localindex;
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end;
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function GetProgDir: String;
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var
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s1 : String;
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alock : LongInt;
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counter: Byte;
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begin
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GetProgDir:='';
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FillChar(s1,255,#0);
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{ GetLock of program directory }
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alock:=GetProgramDir;
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if alock<>0 then begin
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if NameFromLock(alock,@s1[1],255) then begin
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counter:=1;
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while (s1[counter]<>#0) and (counter<>0) do Inc(counter);
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s1[0]:=Char(counter-1);
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GetProgDir:=s1;
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end;
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end;
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end;
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function GetProgramName: String;
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{ Returns ONLY the program name }
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var
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s1 : String;
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counter: Byte;
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begin
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GetProgramName:='';
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FillChar(s1,255,#0);
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if GetProgramName(@s1[1],255) then begin
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{ now check out and assign the length of the string }
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counter := 1;
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while (s1[counter]<>#0) and (counter<>0) do Inc(counter);
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s1[0]:=Char(counter-1);
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{ now remove any component path which should not be there }
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for counter:=length(s1) downto 1 do
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if (s1[counter] = '/') or (s1[counter] = ':') then break;
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{ readjust counterv to point to character }
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if counter<>1 then Inc(counter);
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GetProgramName:=copy(s1,counter,length(s1));
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end;
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end;
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{*****************************************************************************
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ParamStr/Randomize
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*****************************************************************************}
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{ number of args }
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function paramcount : longint;
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begin
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if MOS_ambMsg<>nil then
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paramcount:=0
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else
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paramcount:=argc-1;
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end;
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{ argument number l }
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function paramstr(l : longint) : string;
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var
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s1: String;
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begin
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paramstr:='';
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if MOS_ambMsg<>nil then exit;
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if l=0 then begin
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s1:=GetProgDir;
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if s1[length(s1)]=':' then paramstr:=s1+GetProgramName
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else paramstr:=s1+'/'+GetProgramName;
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end else begin
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if (l>0) and (l+1<=argc) then paramstr:=strpas(argv[l]);
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end;
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end;
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{ set randseed to a new pseudo random value }
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procedure randomize;
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var tmpTime: TDateStamp;
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begin
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DateStamp(@tmpTime);
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randseed:=tmpTime.ds_tick;
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end;
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{ MorphOS specific startup }
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procedure SysInitMorphOS;
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var self: PProcess;
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begin
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self:=PProcess(FindTask(nil));
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if self^.pr_CLI=0 then begin
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{ if we're running from Ambient/Workbench, we catch its message }
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WaitPort(@self^.pr_MsgPort);
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MOS_ambMsg:=GetMsg(@self^.pr_MsgPort);
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end;
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MOS_DOSBase:=OpenLibrary('dos.library',50);
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if MOS_DOSBase=nil then Halt(1);
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MOS_UtilityBase:=OpenLibrary('utility.library',50);
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if MOS_UtilityBase=nil then Halt(1);
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{ Creating the memory pool for growing heap }
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MOS_heapPool:=CreatePool(MEMF_FAST,growheapsize2,growheapsize1);
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if MOS_heapPool=nil then Halt(1);
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if MOS_ambMsg=nil then begin
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StdInputHandle:=dosInput;
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StdOutputHandle:=dosOutput;
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end else begin
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MOS_ConHandle:=Open(MOS_ConName,MODE_OLDFILE);
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if MOS_ConHandle<>0 then begin
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StdInputHandle:=MOS_ConHandle;
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StdOutputHandle:=MOS_ConHandle;
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end else
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Halt(1);
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end;
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end;
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procedure SysInitStdIO;
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begin
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OpenStdIO(Input,fmInput,StdInputHandle);
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OpenStdIO(Output,fmOutput,StdOutputHandle);
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OpenStdIO(StdOut,fmOutput,StdOutputHandle);
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{ * MorphOS doesn't have a separate stderr, just like AmigaOS (???) * }
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StdErrorHandle:=StdOutputHandle;
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// OpenStdIO(StdErr,fmOutput,StdErrorHandle);
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// OpenStdIO(ErrOutput,fmOutput,StdErrorHandle);
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end;
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function GetProcessID: SizeUInt;
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begin
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GetProcessID:=SizeUInt(FindTask(NIL));
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end;
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begin
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IsConsole := TRUE;
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IsLibrary := FALSE;
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StackLength := InitialStkLen;
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StackBottom := Sptr - StackLength;
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{ OS specific startup }
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MOS_ambMsg:=nil;
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MOS_origDir:=0;
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MOS_fileList:=nil;
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envp:=nil;
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SysInitMorphOS;
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{ Set up signals handlers }
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// InstallSignals;
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{ Setup heap }
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InitHeap;
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SysInitExceptions;
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{ Setup stdin, stdout and stderr }
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SysInitStdIO;
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{ Reset IO Error }
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InOutRes:=0;
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{ Arguments }
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GenerateArgs;
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InitSystemThreads;
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{$ifdef HASVARIANT}
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initvariantmanager;
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{$endif HASVARIANT}
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{$ifdef HASWIDESTRING}
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initwidestringmanager;
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{$endif HASWIDESTRING}
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end.
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