+ go32v2 include for objects unit

rtl/dos/go32v2/objinc.inc

@@ -0,0 +1,111 @@
+{---------------------------------------------------------------------------}
+{  FileClose -> Platforms DOS              - Not checked                    }
+{---------------------------------------------------------------------------}
+FUNCTION FileClose (Handle: THandle): Word;
+var
+  regs : trealregs;
+begin
+  regs.realebx:=handle;
+  regs.realeax:=$3e00;
+  sysrealintr($21,regs);
+  FileClose := 0;
+end;
+
+{---------------------------------------------------------------------------}
+{  FileOpen -> Platforms DOS              - Checked 05May1998 CEC           }
+{  Returns 0 on failure                                                     }
+{---------------------------------------------------------------------------}
+FUNCTION FileOpen (Var FileName: AsciiZ; Mode: Word): THandle;
+Var
+var regs : trealregs;
+BEGIN
+         DosStreamError:=0;
+         syscopytodos(longint(@FileName),256);
+         { get linear address from system unit }
+         regs.realedx:=tb mod 16;
+         regs.realds:=tb div 16;
+         regs.realeax := Mode;
+         regs.realecx:=0;
+         sysrealintr($21,regs);
+         if (regs.realflags and 1) <> 0 then
+           begin
+             InOutRes:=lo(regs.realeax);
+             FileOpen:=$0;
+             exit;
+           end
+         else
+            { word handle (under DOS) }
+            FileOpen:=regs.realeax and $ffff;
+END;
+
+{---------------------------------------------------------------------------}
+{  FileWrite -> Platforms DOS              - Checked 05May1998 CEC          }
+{---------------------------------------------------------------------------}
+FUNCTION FileWrite (Handle: THandle; Var Buf; Count: Sw_Word; Var Actual: Sw_Word): Word;
+BEGIN
+ system.do_write(longint(Handle),longint(@Buf),Count);
+ Actual:=Count;
+ FileWrite:=InOutRes;
+End;
+
+
+{---------------------------------------------------------------------------}
+{  SetFileSize -> Platforms DOS          - Not Checked                      }
+{---------------------------------------------------------------------------}
+FUNCTION SetFileSize (Handle: THandle; FileSize: LongInt): Word;
+VAR Actual, Buf: LongInt;
+BEGIN
+   If (Actual = FileSize) Then Begin                  { No position error }
+     Actual := FileWrite(Handle, Pointer(@Buf), 0,Actual);   { Truncate the file }
+     If (Actual <> -1) Then SetFileSize := 0 Else     { No truncate error }
+       SetFileSize := 103;                            { File truncate error }
+   End Else SetFileSize := 103;                       { File truncate error }
+END;
+
+
+{---------------------------------------------------------------------------}
+{  FileRead -> Platforms DOS              - Checked 05May1998 CEC           }
+{---------------------------------------------------------------------------}
+FUNCTION FileRead (Handle: THandle; Var Buf; Count: Sw_Word;
+Var Actual: Sw_Word): Word;
+BEGIN
+  Actual:=system.do_read(longint(Handle),longint(@Buf),Count);
+  FileRead:=InOutRes;
+End;
+
+
+
+{***************************************************************************}
+{  DosSetFilePtr -> Platforms DOS          - Checked 05May1998 CEC          }
+{***************************************************************************}
+{=DosSetFilePtr======================================================
+Calls the operating system to move the file denoted by the handle to
+to the requested position. The move method can be: 0 = absolute offset;
+1 = offset from present location; 2 = offset from end of file;
+Any error is held in DosErrorStream and returned from the call.
+If the return is zero (ie no error) NewPos contains the new absolute
+file position.
+-> Platforms DOS/DPMI/WIN - Checked 16May96 LdB}
+
+FUNCTION SetFilePos (Handle: THandle; Pos: LongInt; MoveType: Word;
+Var Actual: LongInt): Word;
+Var
+ regs: Trealregs;
+const
+ CarryFlag = $001;
+BEGIN
+  regs.realeax := ($42 shl 8) + Byte(MoveType);
+{  regs.realah := $42;
+  regs.realal := Byte(MoveType); }
+  regs.realedx := pos and $ffff;   { keep low word }
+  regs.realecx := pos shr 16;
+  regs.realebx := longint(Handle);
+  sysrealintr($21,regs);
+  if (regs.RealFlags and CarryFlag = 0) then { no error }
+     Actual:=(regs.realeax and $ffff) + ((regs.realedx and $ffff) shl 16)
+  else
+     DosStreamError:=word(regs.realeax);
+
+  SetFilePos := DosStreamError;                   { Return any error }
+END;
+