+ added switch MAC_SYS_RUNABLE

  + added include of system.h etc
  + added standard globals
  + added dummy hook procedures

rtl/macos/system.pp

@@ -3,6 +3,8 @@
     This file is part of the Free Pascal run time library.
     Copyright (c) 2002 by Olle Raab
 
+    FreePascal system unit for MacOS.
+
     See the file COPYING.FPC, included in this distribution,
     for details about the copyright.
 
@@ -15,7 +17,16 @@ unit System;
 
 interface
 
+{If MAC_SYS_RUNABLE is defined, this file can be included in a
+ runnable program, but it then lacks lot of features. If not defined
+ it tries to be faithful to a real system.pp, but it may not be
+ able to assemble and link. The switch is only temporary, and only for
+ use when system.pp is developed.}
+
 {$Y-}
+
+{$ifdef MAC_SYS_RUNABLE}
+
 type
    integer = -32768 .. 32767;
    byte =0..255;
@@ -24,8 +35,42 @@ type
    longint=+(-$7FFFFFFF-1)..$7FFFFFFF;
    pchar=^char;
 
+{$else}
+
+{$I systemh.inc}
+
+{$I heaph.inc}
+
+
+{Platform specific information}
+const
+ LineEnding = #13;
+ LFNSupport = true;
+ DirectorySeparator = ':';
+ DriveSeparator = ':';
+ PathSeparator = ';';
+ FileNameCaseSensitive = false;
+
+const
+  UnusedHandle    = -1;
+  StdInputHandle  = 0;
+  StdOutputHandle = 0;
+  StdErrorHandle  = 0;
+
+  sLineBreak : string[1] = LineEnding;
+  DefaultTextLineBreakStyle : TTextLineBreakStyle = tlbsCR;
+
+var
+  argc : longint;
+  argv : ppchar;
+  envp : ppchar;
+
+{$endif}
+
 implementation
 
+{$ifdef MAC_SYS_RUNABLE}
+
 procedure do_exit;[public,alias:'FPC_DO_EXIT'];
 
 begin
@@ -36,29 +81,247 @@ procedure fpc_initializeunits;[public,alias:'FPC_INITIALIZEUNITS'];
 begin
 end;
 
-{ This is a hack to make it work until powerpc.inc is fixed.
+{$else}
+
+{$I system.inc}
+
+{*********************** ??????? *************}
+
+procedure SysInitStdIO;
+begin
+end;
+
+{*****************************************************************************}
+
+procedure setup_arguments;
+begin
+end;
+
+procedure setup_environment;
+begin
+end;
+
+{*****************************************************************************
+                         System Dependent Exit code
+*****************************************************************************}
+Procedure system_exit;
+begin
+end;
+
+
+{*****************************************************************************
+                              ParamStr/Randomize
+*****************************************************************************}
+
+{ number of args }
+function paramcount : longint;
+begin
+  {paramcount := argc - 1;}
+  paramcount:=0;
+end;
+
+{ argument number l }
+function paramstr(l : longint) : string;
+begin
+  {if (l>=0) and (l+1<=argc) then
+   paramstr:=strpas(argv[l])
+  else}
+   paramstr:='';
+end;
+
+{ set randseed to a new pseudo random value }
+procedure randomize;
+begin
+  {regs.realeax:=$2c00;
+  sysrealintr($21,regs);
+  hl:=regs.realedx and $ffff;
+  randseed:=hl*$10000+ (regs.realecx and $ffff);}
+  randseed:=0;
+end;
+
+{*****************************************************************************
+                              Heap Management
+*****************************************************************************}
+
+{ first address of heap }
+function getheapstart:pointer;
+begin
+   getheapstart:=0;
+end;
+
+{ current length of heap }
+function getheapsize:longint;
+begin
+   getheapsize:=0;
+end;
+
+{ function to allocate size bytes more for the program }
+{ must return the first address of new data space or -1 if fail }
+function Sbrk(size : longint):longint;
+begin
+  Sbrk:=-1;
+end;
+
+{$I heap.inc}
+
+{****************************************************************************
+                        Low level File Routines
+       All these functions can set InOutRes on errors
+ ****************************************************************************}
+
+{ close a file from the handle value }
+procedure do_close(handle : longint);
+begin
+  InOutRes:=1;
+end;
+
+procedure do_erase(p : pchar);
+begin
+  InOutRes:=1;
+end;
+
+procedure do_rename(p1,p2 : pchar);
+begin
+  InOutRes:=1;
+end;
+
+function do_write(h,addr,len : longint) : longint;
+begin
+  InOutRes:=1;
+end;
+
+function do_read(h,addr,len : longint) : longint;
+begin
+  InOutRes:=1;
+end;
+
+function do_filepos(handle : longint) : longint;
+begin
+  InOutRes:=1;
+end;
+
+procedure do_seek(handle,pos : longint);
+begin
+  InOutRes:=1;
+end;
 
-  This function is never called directly, it's a dummy to hold the register save/
-  load subroutines
+function do_seekend(handle:longint):longint;
+begin
+  InOutRes:=1;
+end;
+
+function do_filesize(handle : longint) : longint;
+begin
+  InOutRes:=1;
+end;
+
+{ truncate at a given position }
+procedure do_truncate (handle,pos:longint);
+begin
+  InOutRes:=1;
+end;
+
+procedure do_open(var f;p:pchar;flags:longint);
+{
+  filerec and textrec have both handle and mode as the first items so
+  they could use the same routine for opening/creating.
+  when (flags and $10)   the file will be append
+  when (flags and $100)  the file will be truncate/rewritten
+  when (flags and $1000) there is no check for close (needed for textfiles)
 }
-procedure saverestorereg;
-assembler;
-asm
-	export ._restf14[PR]
-	csect  ._restf14[PR]
-._restf14:
-                mtlr    r0
-                blr
-	export ._savef14[PR]
-	csect  ._savef14[PR]
-._savef14:
-                blr
-end;
-
-end.
+begin
+  InOutRes:=1;
+end;
+
+function do_isdevice(handle:longint):boolean;
+begin
+  do_isdevice:=false;
+end;
+
+
+{*****************************************************************************
+                           UnTyped File Handling
+*****************************************************************************}
+
+{$i file.inc}
+
+{*****************************************************************************
+                           Typed File Handling
+*****************************************************************************}
+
+{$i typefile.inc}
+
+{*****************************************************************************
+                           Text File Handling
+*****************************************************************************}
+
+{ should we consider #26 as the  end of a file ? }
+{?? $DEFINE EOF_CTRLZ}
+
+{$i text.inc}
+
+{*****************************************************************************
+                           Directory Handling
+*****************************************************************************}
+procedure mkdir(const s : string);[IOCheck];
+begin
+  InOutRes:=1;
+end;
+
+procedure rmdir(const s : string);[IOCheck];
+begin
+  InOutRes:=1;
+end;
+
+procedure chdir(const s : string);[IOCheck];
+begin
+  InOutRes:=1;
+end;
+
+procedure GetDir (DriveNr: byte; var Dir: ShortString);
+
+begin
+  InOutRes := 1;
+end;
+
+{*****************************************************************************
+                         SystemUnit Initialization
+*****************************************************************************}
+
+Begin
+  { To be set if this is a GUI or console application }
+  IsConsole := TRUE;
+  { To be set if this is a library and not a program  }
+  IsLibrary := FALSE;
+  StackBottom := SPtr - StackLength;
+  ExitCode := 0;
+{ Setup heap }
+  InitHeap;
+{ Setup stdin, stdout and stderr }
+  OpenStdIO(Input,fmInput,StdInputHandle);
+  OpenStdIO(Output,fmOutput,StdOutputHandle);
+  OpenStdIO(StdOut,fmOutput,StdOutputHandle);
+  OpenStdIO(StdErr,fmOutput,StdErrorHandle);
+{ Setup environment and arguments }
+  Setup_Environment;
+  Setup_Arguments;
+{ Reset IO Error }
+  InOutRes:=0;
+
+{$endif}
+
+End.
+
+
 {
   $Log$
-  Revision 1.2  2002-10-10 19:44:05  florian
+  Revision 1.3  2002-10-23 15:29:09  olle
+    + added switch MAC_SYS_RUNABLE
+    + added include of system.h etc
+    + added standard globals
+    + added dummy hook procedures
+
+  Revision 1.2  2002/10/10 19:44:05  florian
     * changes from Olle to compile/link a simple program
 
   Revision 1.1  2002/10/02 21:34:31  florian