771c10aa14
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@14 6ac86273-5f31-0410-b378-82cca8765d1b
1867 lines
44 KiB
C
1867 lines
44 KiB
C
/****************************************************************/
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/* */
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/* inthndlr.c */
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/* */
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/* Interrupt Handler and Function dispatcher for Kernel */
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/* */
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/* Copyright (c) 1995 */
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/* Pasquale J. Villani */
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/* All Rights Reserved */
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/* */
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/* This file is part of DOS-C. */
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/* */
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/* DOS-C is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU General Public License */
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/* as published by the Free Software Foundation; either version */
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/* 2, or (at your option) any later version. */
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/* */
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/* DOS-C is distributed in the hope that it will be useful, but */
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/* WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
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/* the GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public */
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/* License along with DOS-C; see the file COPYING. If not, */
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/* write to the Free Software Foundation, 675 Mass Ave, */
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/* Cambridge, MA 02139, USA. */
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/* */
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/****************************************************************/
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#include "portab.h"
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#include "globals.h"
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#ifdef VERSION_STRINGS
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BYTE *RcsId = "$Id$";
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#endif
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/*
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* $Log$
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* Revision 1.5 2000/05/11 06:14:45 jimtabor
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* Removed #if statement
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*
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* Revision 1.4 2000/05/11 04:26:26 jimtabor
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* Added code for DOS FN 69 & 6C
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*
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* Revision 1.3 2000/05/09 00:30:11 jimtabor
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* Clean up and Release
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*
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* Revision 1.2 2000/05/08 04:30:00 jimtabor
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* Update CVS to 2020
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*
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* $Log$
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* Revision 1.5 2000/05/11 06:14:45 jimtabor
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* Removed #if statement
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*
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* Revision 1.4 2000/05/11 04:26:26 jimtabor
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* Added code for DOS FN 69 & 6C
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*
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* Revision 1.24 2000/04/29 05:13:16 jtabor
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* Added new functions and clean up code
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*
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* Revision 1.22 2000/03/17 22:59:04 kernel
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* Steffen Kaiser's NLS changes
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*
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* Revision 1.21 2000/03/17 05:00:11 kernel
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* Fixed Func 0x32
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*
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* Revision 1.20 2000/03/16 03:28:49 kernel
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* *** empty log message ***
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*
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* Revision 1.19 2000/03/09 06:07:11 kernel
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* 2017f updates by James Tabor
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*
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* Revision 1.18 1999/09/23 04:40:47 jprice
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* *** empty log message ***
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*
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* Revision 1.13 1999/09/14 01:18:36 jprice
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* ror4: fix int25 & 26 are not cached.
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*
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* Revision 1.12 1999/09/13 22:16:47 jprice
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* Fix 210B function
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*
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* Revision 1.11 1999/08/25 03:18:08 jprice
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* ror4 patches to allow TC 2.01 compile.
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*
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* Revision 1.10 1999/08/10 18:07:57 jprice
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* ror4 2011-04 patch
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*
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* Revision 1.9 1999/08/10 18:03:43 jprice
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* ror4 2011-03 patch
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*
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* Revision 1.8 1999/05/03 06:25:45 jprice
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* Patches from ror4 and many changed of signed to unsigned variables.
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*
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* Revision 1.7 1999/04/23 04:24:39 jprice
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* Memory manager changes made by ska
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*
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* Revision 1.6 1999/04/16 12:21:22 jprice
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* Steffen c-break handler changes
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*
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* Revision 1.5 1999/04/11 04:33:39 jprice
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* ror4 patches
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*
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* Revision 1.3 1999/04/04 22:57:47 jprice
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* no message
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*
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* Revision 1.2 1999/04/04 18:51:43 jprice
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* no message
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*
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* Revision 1.1.1.1 1999/03/29 15:41:04 jprice
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* New version without IPL.SYS
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*
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* Revision 1.9 1999/03/23 23:38:49 jprice
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* Now sets carry when we don't support a function
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*
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* Revision 1.8 1999/03/02 07:02:55 jprice
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* Added some comments. Fixed some minor bugs.
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*
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* Revision 1.7 1999/03/01 05:45:08 jprice
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* Added some DEBUG ifdef's so that it will compile without DEBUG defined.
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*
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* Revision 1.6 1999/02/08 05:55:57 jprice
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* Added Pat's 1937 kernel patches
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*
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* Revision 1.5 1999/02/04 03:11:07 jprice
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* Formating
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*
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* Revision 1.4 1999/02/01 01:48:41 jprice
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* Clean up; Now you can use hex numbers in config.sys. added config.sys screen function to change screen mode (28 or 43/50 lines)
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*
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* Revision 1.3 1999/01/30 08:28:11 jprice
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* Clean up; Fixed bug with set attribute function.
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*
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* Revision 1.2 1999/01/22 04:13:26 jprice
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* Formating
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*
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* Revision 1.1.1.1 1999/01/20 05:51:00 jprice
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* Imported sources
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*
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*
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* Rev 1.14 06 Dec 1998 8:47:38 patv
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* Expanded due to improved int 21h handler code.
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*
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* Rev 1.13 07 Feb 1998 20:38:46 patv
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* Modified stack fram to match DOS standard
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*
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* Rev 1.12 22 Jan 1998 4:09:26 patv
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* Fixed pointer problems affecting SDA
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*
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* Rev 1.11 06 Jan 1998 20:13:18 patv
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* Broke apart int21_system from int21_handler.
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*
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* Rev 1.10 04 Jan 1998 23:15:22 patv
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* Changed Log for strip utility
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*
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* Rev 1.9 04 Jan 1998 17:26:16 patv
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* Corrected subdirectory bug
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*
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* Rev 1.8 03 Jan 1998 8:36:48 patv
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* Converted data area to SDA format
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*
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* Rev 1.7 01 Aug 1997 2:00:10 patv
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* COMPATIBILITY: Added return '$' in AL for function int 21h fn 09h
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*
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* Rev 1.6 06 Feb 1997 19:05:54 patv
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* Added hooks for tsc command
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*
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* Rev 1.5 22 Jan 1997 13:18:32 patv
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* pre-0.92 Svante Frey bug fixes.
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*
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* Rev 1.4 16 Jan 1997 12:46:46 patv
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* pre-Release 0.92 feature additions
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*
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* Rev 1.3 29 May 1996 21:03:40 patv
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* bug fixes for v0.91a
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*
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* Rev 1.2 19 Feb 1996 3:21:48 patv
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* Added NLS, int2f and config.sys processing
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*
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* Rev 1.1 01 Sep 1995 17:54:20 patv
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* First GPL release.
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*
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* Rev 1.0 02 Jul 1995 8:33:34 patv
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* Initial revision.
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*/
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#ifdef TSC
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static VOID StartTrace(VOID);
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static bTraceNext = FALSE;
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#endif
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/* Special entry for far call into the kernel */
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#pragma argsused
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VOID FAR int21_entry(iregs UserRegs)
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{
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int21_handler(UserRegs);
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}
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/* Normal entry. This minimizes user stack usage by avoiding local */
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/* variables needed for the rest of the handler. */
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VOID int21_syscall(iregs FAR * irp)
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{
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Int21AX = irp->AX;
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switch (irp->AH)
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{
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/* DosVars - get/set dos variables */
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case 0x33:
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switch (irp->AL)
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{
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/* Get Ctrl-C flag */
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case 0x00:
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irp->DL = break_ena ? TRUE : FALSE;
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break;
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/* Set Ctrl-C flag */
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case 0x01:
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break_ena = irp->DL ? TRUE : FALSE;
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break;
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/* Get Boot Drive */
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case 0x05:
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irp->DL = BootDrive;
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break;
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/* Get DOS-C version */
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case 0x06:
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irp->BL = os_major;
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irp->BH = os_minor;
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irp->DL = rev_number;
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irp->DH = version_flags;
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break;
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default:
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irp->AX = -DE_INVLDFUNC;
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irp->FLAGS |= FLG_CARRY;
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break;
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/* Toggle DOS-C rdwrblock trace dump */
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case 0xfd:
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#ifdef DEBUG
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bDumpRdWrParms = !bDumpRdWrParms;
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#endif
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break;
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/* Toggle DOS-C syscall trace dump */
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case 0xfe:
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#ifdef DEBUG
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bDumpRegs = !bDumpRegs;
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#endif
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break;
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/* Get DOS-C release string pointer */
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case 0xff:
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irp->DX = FP_SEG(os_release);
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irp->AX = FP_OFF(os_release);
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break;
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}
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break;
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/* Set PSP */
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case 0x50:
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cu_psp = irp->BX;
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break;
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/* Get PSP */
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case 0x51:
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irp->BX = cu_psp;
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break;
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/* UNDOCUMENTED: return current psp */
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case 0x62:
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irp->BX = cu_psp;
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break;
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/* Normal DOS function - switch stacks */
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default:
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int21_service(user_r);
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break;
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}
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}
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VOID int21_service(iregs FAR * r)
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{
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COUNT rc = 0,
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rc1;
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ULONG lrc;
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psp FAR *p = MK_FP(cu_psp, 0);
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p->ps_stack = (BYTE FAR *) r;
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#ifdef DEBUG
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if (bDumpRegs)
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{
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fbcopy((VOID FAR *) user_r, (VOID FAR *) & error_regs, sizeof(iregs));
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printf("System call (21h): %02x\n", user_r->AX);
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dump_regs = TRUE;
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dump();
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}
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#endif
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dispatch:
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/* Check for Ctrl-Break */
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switch (r->AH)
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{
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default:
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if (!break_ena)
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break;
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case 0x01:
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case 0x02:
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case 0x03:
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case 0x04:
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case 0x05:
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case 0x08:
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case 0x09:
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case 0x0a:
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case 0x0b:
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if (control_break())
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handle_break();
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}
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/* The dispatch handler */
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switch (r->AH)
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{
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/* int 21h common error handler */
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case 0x64:
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case 0x6b:
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default:
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error_invalid:
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r->AX = -DE_INVLDFUNC;
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goto error_out;
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error_exit:
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r->AX = -rc;
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error_out:
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r->FLAGS |= FLG_CARRY;
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break;
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#if 0
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/* Moved to simulate a 0x4c00 -- 1999/04/21 ska */
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/* Terminate Program */
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case 0x00:
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if (cu_psp == RootPsp)
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break;
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else if (((psp FAR *) (MK_FP(cu_psp, 0)))->ps_parent == cu_psp)
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break;
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tsr = FALSE;
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return_mode = break_flg ? 1 : 0;
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return_code = r->AL;
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if (DosMemCheck() != SUCCESS)
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panic("MCB chain corrupted");
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#ifdef TSC
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StartTrace();
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#endif
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return_user();
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break;
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#endif
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/* Read Keyboard with Echo */
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case 0x01:
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Do_DosIdle_loop();
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r->AL = _sti();
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sto(r->AL);
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break;
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/* Display Character */
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case 0x02:
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sto(r->DL);
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break;
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|
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/* Auxiliary Input */
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case 0x03:
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r->AL = _sti();
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break;
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|
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/* Auxiliary Output */
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case 0x04:
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sto(r->DL);
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break;
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|
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/* Print Character */
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case 0x05:
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sto(r->DL);
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break;
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|
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/* Direct Cosole I/O */
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case 0x06:
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if (r->DL != 0xff)
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sto(r->DL);
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else if (StdinBusy())
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{
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r->AL = 0x00;
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r->FLAGS |= FLG_ZERO;
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}
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else
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{
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r->FLAGS &= ~FLG_ZERO;
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r->AL = _sti();
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}
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break;
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/* Direct Console Input */
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case 0x07:
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/* Read Keyboard Without Echo */
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case 0x08:
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Do_DosIdle_loop();
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r->AL = _sti();
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break;
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|
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/* Display String */
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case 0x09:
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{
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static COUNT scratch;
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BYTE FAR *p = MK_FP(r->DS, r->DX),
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FAR * q;
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q = p;
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while (*q != '$')
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++q;
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DosWrite(STDOUT, q - p, p, (COUNT FAR *) & scratch);
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}
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r->AL = '$';
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break;
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|
|
/* Buffered Keyboard Input */
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case 0x0a:
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((keyboard FAR *) MK_FP(r->DS, r->DX))->kb_count = 0;
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sti((keyboard FAR *) MK_FP(r->DS, r->DX));
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((keyboard FAR *) MK_FP(r->DS, r->DX))->kb_count -= 2;
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break;
|
|
|
|
/* Check Stdin Status */
|
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case 0x0b:
|
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if (StdinBusy())
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r->AL = 0xFF;
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else
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r->AL = 0x00;
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break;
|
|
|
|
/* Flush Buffer, Read Keayboard */
|
|
case 0x0c:
|
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KbdFlush();
|
|
switch (r->AL)
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{
|
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case 0x01:
|
|
case 0x06:
|
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case 0x07:
|
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case 0x08:
|
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case 0x0a:
|
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r->AH = r->AL;
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goto dispatch;
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|
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default:
|
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r->AL = 0x00;
|
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break;
|
|
}
|
|
break;
|
|
|
|
/* Reset Drive */
|
|
case 0x0d:
|
|
flush();
|
|
break;
|
|
|
|
/* Set Default Drive */
|
|
case 0x0e:
|
|
r->AL = DosSelectDrv(r->DL);
|
|
break;
|
|
|
|
case 0x0f:
|
|
if (FcbOpen(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x10:
|
|
if (FcbClose(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x11:
|
|
if (FcbFindFirst(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x12:
|
|
if (FcbFindNext(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x13:
|
|
if (FcbDelete(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x14:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbRead(MK_FP(r->DS, r->DX), &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
case 0x15:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbWrite(MK_FP(r->DS, r->DX), &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
case 0x16:
|
|
if (FcbCreate(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
case 0x17:
|
|
if (FcbRename(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
/* CP/M compatibility functions */
|
|
case 0x18:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
case 0x20:
|
|
#ifndef TSC
|
|
case 0x61:
|
|
#endif
|
|
r->AL = 0;
|
|
break;
|
|
|
|
/* Get Default Drive */
|
|
case 0x19:
|
|
r->AL = default_drive;
|
|
break;
|
|
|
|
/* Set DTA */
|
|
case 0x1a:
|
|
{
|
|
psp FAR *p = MK_FP(cu_psp, 0);
|
|
|
|
p->ps_dta = MK_FP(r->DS, r->DX);
|
|
dos_setdta(p->ps_dta);
|
|
}
|
|
break;
|
|
|
|
/* Get Default Drive Data */
|
|
case 0x1b:
|
|
{
|
|
BYTE FAR *p;
|
|
|
|
FatGetDrvData(0,
|
|
(COUNT FAR *) & r->AX,
|
|
(COUNT FAR *) & r->CX,
|
|
(COUNT FAR *) & r->DX,
|
|
(BYTE FAR **) & p);
|
|
r->DS = FP_SEG(p);
|
|
r->BX = FP_OFF(p);
|
|
}
|
|
break;
|
|
|
|
/* Get Drive Data */
|
|
case 0x1c:
|
|
{
|
|
BYTE FAR *p;
|
|
|
|
FatGetDrvData(r->DL,
|
|
(COUNT FAR *) & r->AX,
|
|
(COUNT FAR *) & r->CX,
|
|
(COUNT FAR *) & r->DX,
|
|
(BYTE FAR **) & p);
|
|
r->DS = FP_SEG(p);
|
|
r->BX = FP_OFF(p);
|
|
}
|
|
break;
|
|
|
|
/* Get default DPB */
|
|
case 0x1f:
|
|
if (default_drive <= lastdrive)
|
|
{
|
|
struct dpb FAR *dpb = (struct dpb FAR *)CDSp->cds_table[default_drive].cdsDpb;
|
|
if (dpb == 0)
|
|
{
|
|
r->AL = 0xff;
|
|
break;
|
|
}
|
|
|
|
r->DS = FP_SEG(dpb);
|
|
r->BX = FP_OFF(dpb);
|
|
r->AL = 0;
|
|
}
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
/* Random read using FCB */
|
|
case 0x21:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbRandomRead(MK_FP(r->DS, r->DX), &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
/* Random write using FCB */
|
|
case 0x22:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbRandomWrite(MK_FP(r->DS, r->DX), &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
/* Get file size in records using FCB */
|
|
case 0x23:
|
|
if (FcbGetFileSize(MK_FP(r->DS, r->DX)))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = 0xff;
|
|
break;
|
|
|
|
/* Set random record field in FCB */
|
|
case 0x24:
|
|
FcbSetRandom(MK_FP(r->DS, r->DX));
|
|
break;
|
|
|
|
/* Set Interrupt Vector */
|
|
case 0x25:
|
|
{
|
|
VOID(INRPT FAR * p) () = MK_FP(r->DS, r->DX);
|
|
|
|
setvec(r->AL, p);
|
|
}
|
|
break;
|
|
|
|
/* Dos Create New Psp */
|
|
case 0x26:
|
|
{
|
|
psp FAR *p = MK_FP(cu_psp, 0);
|
|
|
|
new_psp((psp FAR *) MK_FP(r->DX, 0), p->ps_size);
|
|
}
|
|
break;
|
|
|
|
/* Read random record(s) using FCB */
|
|
case 0x27:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbRandomBlockRead(MK_FP(r->DS, r->DX), r->CX, &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
/* Write random record(s) using FCB */
|
|
case 0x28:
|
|
{
|
|
COUNT nErrorCode;
|
|
|
|
if (FcbRandomBlockWrite(MK_FP(r->DS, r->DX), r->CX, &nErrorCode))
|
|
r->AL = 0;
|
|
else
|
|
r->AL = nErrorCode;
|
|
break;
|
|
}
|
|
|
|
/* Parse File Name */
|
|
case 0x29:
|
|
{
|
|
BYTE FAR *lpFileName;
|
|
|
|
lpFileName = MK_FP(r->DS, r->SI);
|
|
r->AL = FcbParseFname(r->AL,
|
|
&lpFileName,
|
|
MK_FP(r->ES, r->DI));
|
|
r->DS = FP_SEG(lpFileName);
|
|
r->SI = FP_OFF(lpFileName);
|
|
}
|
|
break;
|
|
|
|
/* Get Date */
|
|
case 0x2a:
|
|
DosGetDate(
|
|
(BYTE FAR *) & (r->AL), /* WeekDay */
|
|
(BYTE FAR *) & (r->DH), /* Month */
|
|
(BYTE FAR *) & (r->DL), /* MonthDay */
|
|
(COUNT FAR *) & (r->CX)); /* Year */
|
|
break;
|
|
|
|
/* Set Date */
|
|
case 0x2b:
|
|
rc = DosSetDate(
|
|
(BYTE FAR *) & (r->DH), /* Month */
|
|
(BYTE FAR *) & (r->DL), /* MonthDay */
|
|
(COUNT FAR *) & (r->CX)); /* Year */
|
|
if (rc != SUCCESS)
|
|
r->AL = 0xff;
|
|
else
|
|
r->AL = 0;
|
|
break;
|
|
|
|
/* Get Time */
|
|
case 0x2c:
|
|
DosGetTime(
|
|
(BYTE FAR *) & (r->CH), /* Hour */
|
|
(BYTE FAR *) & (r->CL), /* Minutes */
|
|
(BYTE FAR *) & (r->DH), /* Seconds */
|
|
(BYTE FAR *) & (r->DL)); /* Hundredths */
|
|
break;
|
|
|
|
/* Set Date */
|
|
case 0x2d:
|
|
rc = DosSetTime(
|
|
(BYTE FAR *) & (r->CH), /* Hour */
|
|
(BYTE FAR *) & (r->CL), /* Minutes */
|
|
(BYTE FAR *) & (r->DH), /* Seconds */
|
|
(BYTE FAR *) & (r->DL)); /* Hundredths */
|
|
if (rc != SUCCESS)
|
|
r->AL = 0xff;
|
|
else
|
|
r->AL = 0;
|
|
break;
|
|
|
|
/* Set verify flag */
|
|
case 0x2e:
|
|
verify_ena = (r->AL ? TRUE : FALSE);
|
|
break;
|
|
|
|
/* Get DTA */
|
|
case 0x2f:
|
|
r->ES = FP_SEG(dta);
|
|
r->BX = FP_OFF(dta);
|
|
break;
|
|
|
|
/* Get DOS Version */
|
|
case 0x30:
|
|
r->AL = os_major;
|
|
r->AH = os_minor;
|
|
r->BH = OEM_ID;
|
|
r->CH = REVISION_MAJOR; /* JPP */
|
|
r->CL = REVISION_MINOR;
|
|
r->BL = REVISION_SEQ;
|
|
break;
|
|
|
|
/* Keep Program (Terminate and stay resident) */
|
|
case 0x31:
|
|
DosMemChange(cu_psp, r->DX < 6 ? 6 : r->DX, 0);
|
|
return_mode = 3;
|
|
return_code = r->AL;
|
|
tsr = TRUE;
|
|
return_user();
|
|
break;
|
|
|
|
/* Get DPB */
|
|
case 0x32:
|
|
r->DL = ( r->DL == 0 ? default_drive : r->DL - 1);
|
|
if (r->DL <= lastdrive)
|
|
{
|
|
struct dpb FAR *dpb = CDSp->cds_table[r->DL].cdsDpb;
|
|
if (dpb == 0)
|
|
{
|
|
r->AL = 0xff;
|
|
break;
|
|
}
|
|
r->DS = FP_SEG(dpb);
|
|
r->BX = FP_OFF(dpb);
|
|
r->AL = 0;
|
|
}
|
|
else
|
|
r->AL = 0xFF;
|
|
break;
|
|
|
|
/* Get InDOS flag */
|
|
case 0x34:
|
|
{
|
|
BYTE FAR *p;
|
|
|
|
p = (BYTE FAR *) ((BYTE *) & InDOS);
|
|
r->ES = FP_SEG(p);
|
|
r->BX = FP_OFF(p);
|
|
}
|
|
break;
|
|
|
|
/* Get Interrupt Vector */
|
|
case 0x35:
|
|
{
|
|
BYTE FAR *p;
|
|
|
|
p = getvec((COUNT) r->AL);
|
|
r->ES = FP_SEG(p);
|
|
r->BX = FP_OFF(p);
|
|
}
|
|
break;
|
|
|
|
/* Dos Get Disk Free Space */
|
|
case 0x36:
|
|
DosGetFree(
|
|
(COUNT) r->DL,
|
|
(COUNT FAR *) & r->AX,
|
|
(COUNT FAR *) & r->BX,
|
|
(COUNT FAR *) & r->CX,
|
|
(COUNT FAR *) & r->DX);
|
|
break;
|
|
|
|
/* Undocumented Get/Set Switchar */
|
|
case 0x37:
|
|
switch (r->AL)
|
|
{
|
|
/* Get switch character */
|
|
case 0x00:
|
|
r->DL = switchar;
|
|
r->AL = 0x00;
|
|
break;
|
|
|
|
/* Set switch character */
|
|
case 0x01:
|
|
switchar = r->DL;
|
|
r->AL = 0x00;
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
}
|
|
break;
|
|
|
|
/* Get/Set Country Info */
|
|
case 0x38:
|
|
{
|
|
UWORD cntry = r->AL;
|
|
|
|
if(cntry == 0)
|
|
cntry = (UWORD)-1;
|
|
else if(cntry == 0xff)
|
|
cntry = r->BX;
|
|
|
|
if (0xffff == r->DX) {
|
|
/* Set Country Code */
|
|
if((rc = setCountryCode(cntry)) < 0)
|
|
goto error_invalid;
|
|
} else {
|
|
/* Get Country Information */
|
|
if((rc = getCountryInformation(cntry, MK_FP(r->DS, r->DX))) < 0)
|
|
goto error_invalid;
|
|
r->AX = r->BX = cntry;
|
|
}
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Create Directory */
|
|
case 0x39:
|
|
rc = DosMkdir((BYTE FAR *) MK_FP(r->DS, r->DX));
|
|
if (rc != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Remove Directory */
|
|
case 0x3a:
|
|
rc = DosRmdir((BYTE FAR *) MK_FP(r->DS, r->DX));
|
|
if (rc != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Change Directory */
|
|
case 0x3b:
|
|
if ((rc = DosChangeDir((BYTE FAR *) MK_FP(r->DS, r->DX))) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Create File */
|
|
case 0x3c:
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->DX), r->CX)) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Open */
|
|
case 0x3d:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->DX), r->AL)) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Dos Close */
|
|
case 0x3e:
|
|
if ((rc = DosClose(r->BX)) < 0)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Dos Read */
|
|
case 0x3f:
|
|
rc = DosRead(r->BX, r->CX, MK_FP(r->DS, r->DX), (COUNT FAR *) & rc1);
|
|
|
|
if (rc1 != SUCCESS)
|
|
{
|
|
r->FLAGS |= FLG_CARRY;
|
|
r->AX = -rc1;
|
|
}
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
r->AX = rc;
|
|
}
|
|
break;
|
|
|
|
/* Dos Write */
|
|
case 0x40:
|
|
rc = DosWrite(r->BX, r->CX, MK_FP(r->DS, r->DX), (COUNT FAR *) & rc1);
|
|
if (rc1 != SUCCESS)
|
|
{
|
|
r->FLAGS |= FLG_CARRY;
|
|
r->AX = -rc1;
|
|
}
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
r->AX = rc;
|
|
}
|
|
break;
|
|
|
|
/* Dos Delete File */
|
|
case 0x41:
|
|
rc = DosDelete((BYTE FAR *) MK_FP(r->DS, r->DX));
|
|
if (rc < 0)
|
|
{
|
|
r->FLAGS |= FLG_CARRY;
|
|
r->AX = -rc;
|
|
}
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Dos Seek */
|
|
case 0x42:
|
|
if ((rc = DosSeek(r->BX, (LONG) ((((LONG) (r->CX)) << 16) + r->DX), r->AL, &lrc)) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->DX = (lrc >> 16);
|
|
r->AX = lrc & 0xffff;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Get/Set File Attributes */
|
|
case 0x43:
|
|
switch (r->AL)
|
|
{
|
|
case 0x00:
|
|
rc = DosGetFattr((BYTE FAR *) MK_FP(r->DS, r->DX), (UWORD FAR *) & r->CX);
|
|
if (rc != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
case 0x01:
|
|
rc = DosSetFattr((BYTE FAR *) MK_FP(r->DS, r->DX), (UWORD FAR *) & r->CX);
|
|
if (rc != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
}
|
|
break;
|
|
|
|
/* Device I/O Control */
|
|
case 0x44:
|
|
{
|
|
rc = DosDevIOctl(r, (COUNT FAR *) & rc1);
|
|
|
|
if (rc1 != SUCCESS)
|
|
{
|
|
r->FLAGS |= FLG_CARRY;
|
|
r->AX = -rc1;
|
|
}
|
|
else
|
|
{
|
|
if((r->AL == 0x02) || (r->AL == 0x03) || (r->AL == 0x04) || (r->AL == 0x05))
|
|
r->AX = r->CX;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* Duplicate File Handle */
|
|
case 0x45:
|
|
rc = DosDup(r->BX);
|
|
if (rc < SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
r->AX = rc;
|
|
}
|
|
break;
|
|
|
|
/* Force Duplicate File Handle */
|
|
case 0x46:
|
|
rc = DosForceDup(r->BX, r->CX);
|
|
if (rc < SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Get Current Directory */
|
|
case 0x47:
|
|
if ((rc = DosGetCuDir(r->DL, MK_FP(r->DS, r->SI))) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
r->AX = 0x0100; /*jpp: from interrupt list */
|
|
}
|
|
break;
|
|
|
|
/* Allocate memory */
|
|
case 0x48:
|
|
if ((rc = DosMemAlloc(r->BX, mem_access_mode, &(r->AX), &(r->BX))) < 0)
|
|
{
|
|
DosMemLargest(&(r->BX));
|
|
goto error_exit;
|
|
}
|
|
else
|
|
{
|
|
++(r->AX); /* DosMemAlloc() returns seg of MCB rather than data */
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Free memory */
|
|
case 0x49:
|
|
if ((rc = DosMemFree((r->ES) - 1)) < 0)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Set memory block size */
|
|
case 0x4a:
|
|
{
|
|
UWORD maxSize;
|
|
|
|
if ((rc = DosMemChange(r->ES, r->BX, &maxSize)) < 0)
|
|
{
|
|
if (rc == DE_NOMEM)
|
|
r->BX = maxSize;
|
|
|
|
#if 0
|
|
if (cu_psp == r->ES)
|
|
{
|
|
|
|
psp FAR *p;
|
|
|
|
p = MK_FP(cu_psp, 0);
|
|
p->ps_size = r->BX + cu_psp;
|
|
}
|
|
#endif
|
|
goto error_exit;
|
|
}
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
|
|
break;
|
|
}
|
|
|
|
/* Load and Execute Program */
|
|
case 0x4b:
|
|
break_flg = FALSE;
|
|
|
|
if ((rc = DosExec(r->AL, MK_FP(r->ES, r->BX), MK_FP(r->DS, r->DX)))
|
|
!= SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Terminate Program */
|
|
case 0x00:
|
|
r->AX = 0x4c00;
|
|
|
|
/* End Program */
|
|
case 0x4c:
|
|
if (cu_psp == RootPsp
|
|
|| ((psp FAR *) (MK_FP(cu_psp, 0)))->ps_parent == cu_psp)
|
|
break;
|
|
tsr = FALSE;
|
|
int2f_Remote_call(REM_PROCESS_END, 0, 0, 0, 0, 0, 0);
|
|
int2f_Remote_call(REM_CLOSEALL, 0, 0, 0, 0, 0, 0);
|
|
if (ErrorMode)
|
|
{
|
|
ErrorMode = FALSE;
|
|
return_mode = 2;
|
|
}
|
|
else if (break_flg)
|
|
{
|
|
break_flg = FALSE;
|
|
return_mode = 1;
|
|
}
|
|
else
|
|
{
|
|
return_mode = 0;
|
|
}
|
|
return_code = r->AL;
|
|
if (DosMemCheck() != SUCCESS)
|
|
panic("MCB chain corrupted");
|
|
#ifdef TSC
|
|
StartTrace();
|
|
#endif
|
|
return_user();
|
|
break;
|
|
|
|
/* Get Child-program Return Value */
|
|
case 0x4d:
|
|
r->AL = return_code;
|
|
r->AH = return_mode;
|
|
break;
|
|
|
|
/* Dos Find First */
|
|
case 0x4e:
|
|
{
|
|
/* dta for this call is set on entry. This */
|
|
/* needs to be changed for new versions. */
|
|
if ((rc = DosFindFirst((UCOUNT) r->CX, (BYTE FAR *) MK_FP(r->DS, r->DX))) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->AX = 0;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* Dos Find Next */
|
|
case 0x4f:
|
|
{
|
|
/* dta for this call is set on entry. This */
|
|
/* needs to be changed for new versions. */
|
|
if ((rc = DosFindNext()) < 0)
|
|
{
|
|
r->AX = -rc;
|
|
|
|
if (r->AX == 2)
|
|
r->AX = 18;
|
|
|
|
r->FLAGS |= FLG_CARRY;
|
|
}
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* ************UNDOCUMENTED************************************* */
|
|
/* Get List of Lists */
|
|
case 0x52:
|
|
{
|
|
BYTE FAR *p;
|
|
|
|
p = (BYTE FAR *) & DPBp;
|
|
r->ES = FP_SEG(p);
|
|
r->BX = FP_OFF(p);
|
|
}
|
|
break;
|
|
|
|
/* Get verify state */
|
|
case 0x54:
|
|
r->AL = (verify_ena ? TRUE : FALSE);
|
|
break;
|
|
|
|
/* ************UNDOCUMENTED************************************* */
|
|
/* Dos Create New Psp & set p_size */
|
|
case 0x55:
|
|
new_psp((psp FAR *) MK_FP(r->DX, 0), r->SI);
|
|
break;
|
|
|
|
/* Dos Rename */
|
|
case 0x56:
|
|
rc = DosRename(
|
|
(BYTE FAR *) MK_FP(r->DS, r->DX), /* OldName */
|
|
(BYTE FAR *) MK_FP(r->ES, r->DI)); /* NewName */
|
|
if (rc < SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Get/Set File Date and Time */
|
|
case 0x57:
|
|
switch (r->AL)
|
|
{
|
|
case 0x00:
|
|
rc = DosGetFtime(
|
|
(COUNT) r->BX, /* Handle */
|
|
(date FAR *) & r->DX, /* FileDate */
|
|
(time FAR *) & r->CX); /* FileTime */
|
|
if (rc < SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
case 0x01:
|
|
rc = DosSetFtime(
|
|
(COUNT) r->BX, /* Handle */
|
|
(date FAR *) & r->DX, /* FileDate */
|
|
(time FAR *) & r->CX); /* FileTime */
|
|
if (rc < SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
}
|
|
break;
|
|
|
|
/* Get/Set Allocation Strategy */
|
|
case 0x58:
|
|
switch (r->AL)
|
|
{
|
|
case 0x00:
|
|
r->AX = mem_access_mode;
|
|
break;
|
|
|
|
case 0x01:
|
|
if (((COUNT) r->BX) < 0 || r->BX > 2)
|
|
goto error_invalid;
|
|
else
|
|
{
|
|
mem_access_mode = r->BX;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
#ifdef DEBUG
|
|
case 0xff:
|
|
show_chain();
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
|
|
/* Create Temporary File */
|
|
case 0x5a:
|
|
if ((rc = DosMkTmp(MK_FP(r->DS, r->DX), r->CX)) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Create New File */
|
|
case 0x5b:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->DX), 0)) >= 0)
|
|
{
|
|
DosClose(rc);
|
|
r->AX = 80;
|
|
r->FLAGS |= FLG_CARRY;
|
|
}
|
|
else
|
|
{
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->DX), r->CX)) < 0)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* UNDOCUMENTED: server, share.exe and sda function */
|
|
case 0x5d:
|
|
switch (r->AL)
|
|
{
|
|
/* Remote Server Call */
|
|
case 0x00:
|
|
{
|
|
UWORD FAR *x = MK_FP(r->DS, r->DX);
|
|
r->AX = x[0];
|
|
r->BX = x[1];
|
|
r->CX = x[2];
|
|
r->DX = x[3];
|
|
r->SI = x[4];
|
|
r->DI = x[5];
|
|
r->DS = x[6];
|
|
r->ES = x[7];
|
|
}
|
|
goto dispatch;
|
|
|
|
case 0x06:
|
|
r->DS = FP_SEG(internal_data);
|
|
r->SI = FP_OFF(internal_data);
|
|
r->CX = swap_always - internal_data;
|
|
r->DX = swap_indos - internal_data;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
case 0x07:
|
|
case 0x08:
|
|
case 0x09:
|
|
{
|
|
COUNT result;
|
|
result = int2f_Remote_call(REM_PRINTREDIR, 0, 0, r->DX, 0, 0, (MK_FP(0, Int21AX)));
|
|
r->AX = result;
|
|
if (result != SUCCESS) {
|
|
r->FLAGS |= FLG_CARRY;
|
|
} else {
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
goto error_invalid;
|
|
}
|
|
break;
|
|
|
|
case 0x5e:
|
|
switch (r->AL)
|
|
{
|
|
case 0x00:
|
|
r->CX = get_machine_name(MK_FP(r->DS, r->DX));
|
|
break;
|
|
|
|
case 0x01:
|
|
set_machine_name(MK_FP(r->DS, r->DX), r->CX);
|
|
break;
|
|
|
|
default:
|
|
{
|
|
COUNT result;
|
|
result = int2f_Remote_call(REM_PRINTSET, r->BX, r->CX, r->DX, (MK_FP(r->ES, r->DI)), r->SI, (MK_FP(r->DS, Int21AX)));
|
|
r->AX = result;
|
|
if (result != SUCCESS) {
|
|
r->FLAGS |= FLG_CARRY;
|
|
} else {
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x5f:
|
|
switch (r->AL)
|
|
{
|
|
case 0x07:
|
|
if (r->DL <= lastdrive) {
|
|
CDSp->cds_table[r->DL].cdsFlags |= 0x100;
|
|
}
|
|
break;
|
|
|
|
case 0x08:
|
|
if (r->DL <= lastdrive) {
|
|
CDSp->cds_table[r->DL].cdsFlags &= ~0x100;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
COUNT result;
|
|
result = int2f_Remote_call(REM_DOREDIRECT, r->BX, r->CX, r->DX, (MK_FP(r->ES, r->DI)), r->SI, (MK_FP(r->DS, Int21AX)));
|
|
r->AX = result;
|
|
if (result != SUCCESS) {
|
|
r->FLAGS |= FLG_CARRY;
|
|
} else {
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x60: /* TRUENAME */
|
|
if ((rc = truename(MK_FP(r->DS, r->SI),
|
|
adjust_far(MK_FP(r->ES, r->DI)), TRUE)) != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
#ifdef TSC
|
|
/* UNDOCUMENTED: no-op */
|
|
/* */
|
|
/* DOS-C: tsc support */
|
|
case 0x61:
|
|
#ifdef DEBUG
|
|
switch (r->AL)
|
|
{
|
|
case 0x01:
|
|
bTraceNext = TRUE;
|
|
break;
|
|
|
|
case 0x02:
|
|
bDumpRegs = FALSE;
|
|
break;
|
|
}
|
|
#endif
|
|
r->AL = 0x00;
|
|
break;
|
|
#endif
|
|
|
|
/* UNDOCUMENTED: return current psp */
|
|
case 0x62:
|
|
r->BX = cu_psp;
|
|
break;
|
|
|
|
/* UNDOCUMENTED: Double byte and korean tables */
|
|
case 0x63:
|
|
{
|
|
#ifdef DBLBYTE
|
|
static char dbcsTable[2] =
|
|
{
|
|
0, 0
|
|
};
|
|
void FAR *dp = &dbcsTable;
|
|
|
|
r->DS = FP_SEG(dp);
|
|
r->SI = FP_OFF(dp);
|
|
r->AL = 0;
|
|
#else
|
|
/* not really supported, but will pass. */
|
|
r->AL = 0x00; /*jpp: according to interrupt list */
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
/* Extended country info */
|
|
case 0x65:
|
|
switch(r->AL) {
|
|
case 0x20: /* upcase single character */
|
|
r->DL = upChar(r->DL);
|
|
break;
|
|
case 0x21: /* upcase memory area */
|
|
upMem(MK_FP(r->DS, r->DX), r->CX);
|
|
break;
|
|
case 0x22: /* upcase ASCIZ */
|
|
upString(MK_FP(r->DS, r->DX));
|
|
break;
|
|
case 0xA0: /* upcase single character of filenames */
|
|
r->DL = upFChar(r->DL);
|
|
break;
|
|
case 0xA1: /* upcase memory area of filenames */
|
|
upFMem(MK_FP(r->DS, r->DX), r->CX);
|
|
break;
|
|
case 0xA2: /* upcase ASCIZ of filenames */
|
|
upFString(MK_FP(r->DS, r->DX));
|
|
break;
|
|
case 0x23: /* check Yes/No response */
|
|
r->AX = yesNo(r->DL);
|
|
break;
|
|
default:
|
|
if ((rc = extCtryInfo(
|
|
r->AL, r->BX, r->DX, r->CX,
|
|
MK_FP(r->ES, r->DI))) < 0)
|
|
goto error_exit;
|
|
break;
|
|
}
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Code Page functions */
|
|
case 0x66: {
|
|
int rc;
|
|
switch (r->AL)
|
|
{
|
|
case 1:
|
|
rc = getCodePage(&r->BX, &r->DX);
|
|
break;
|
|
case 2:
|
|
rc = setCodePage(r->BX, r->DX);
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
}
|
|
if(rc != SUCCESS)
|
|
goto error_exit;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
}
|
|
|
|
/* Set Max file handle count */
|
|
case 0x67:
|
|
if ((rc = SetJFTSize(r->BX)) != SUCCESS)
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
/* Flush file buffer -- dummy function right now. */
|
|
case 0x68:
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
break;
|
|
|
|
/* Get/Set Serial Number */
|
|
case 0x69:
|
|
rc = ( r->BL == 0 ? default_drive : r->BL - 1);
|
|
if (rc <= lastdrive)
|
|
{
|
|
if (CDSp->cds_table[rc].cdsFlags & CDSNETWDRV) {
|
|
goto error_invalid;
|
|
}
|
|
switch(r->AL){
|
|
case 0x00:
|
|
r->AL = 0x0d;
|
|
r->CX = 0x0866;
|
|
rc = DosDevIOctl(r, (COUNT FAR *) & rc1);
|
|
break;
|
|
|
|
case 0x01:
|
|
r->AL = 0x0d;
|
|
r->CX = 0x0846;
|
|
rc = DosDevIOctl(r, (COUNT FAR *) & rc1);
|
|
break;
|
|
}
|
|
if (rc1 != SUCCESS)
|
|
{
|
|
r->FLAGS |= FLG_CARRY;
|
|
r->AX = -rc1;
|
|
}
|
|
else
|
|
{
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
r->AL = 0xFF;
|
|
break;
|
|
|
|
|
|
/* Extended Open-Creat, not fully functional.*/
|
|
case 0x6c:
|
|
switch(r->DL) {
|
|
case 0x12:
|
|
{
|
|
COUNT x = 0;
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->SI), 0)) >= 0)
|
|
{
|
|
DosClose(rc);
|
|
x = 1;
|
|
}
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->SI), r->CX )) < 0 )
|
|
goto error_exit;
|
|
else
|
|
{
|
|
x += 2;
|
|
r->CX = x;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
case 0x10:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->SI), 0)) >= 0)
|
|
{
|
|
DosClose(rc);
|
|
r->AX = 80;
|
|
r->FLAGS |= FLG_CARRY;
|
|
}
|
|
else
|
|
{
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->SI), r->CX )) < 0 )
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->CX = 0x02;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
case 0x02:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->SI), 0)) < 0)
|
|
goto error_exit;
|
|
DosClose(rc);
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->SI), r->CX )) < 0 )
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->CX = 0x03;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
case 0x11:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->SI), 0)) >= 0)
|
|
{
|
|
r->CX = 0x01;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
else{
|
|
if ((rc = DosCreat(MK_FP(r->DS, r->SI), r->CX )) < 0 )
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->CX = 0x02;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x01:
|
|
if ((rc = DosOpen(MK_FP(r->DS, r->SI), r->BL )) < 0 )
|
|
goto error_exit;
|
|
else
|
|
{
|
|
r->CX = 0x01;
|
|
r->AX = rc;
|
|
r->FLAGS &= ~FLG_CARRY;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto error_invalid;
|
|
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (bDumpRegs)
|
|
{
|
|
fbcopy((VOID FAR *) user_r, (VOID FAR *) & error_regs,
|
|
sizeof(iregs));
|
|
dump_regs = TRUE;
|
|
dump();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* terminate handler */
|
|
VOID INRPT FAR int22_handler(void)
|
|
{
|
|
}
|
|
|
|
#if 0
|
|
/* No kernel INT-23 handler required no longer -- 1999/04/15 ska */
|
|
/* ctrl-Break handler */
|
|
#pragma argsused
|
|
VOID INRPT FAR int23_handler(int es, int ds, int di, int si, int bp, int sp, int bx, int dx, int cx, int ax, int ip, int cs, int flags)
|
|
{
|
|
tsr = FALSE;
|
|
return_mode = 1;
|
|
return_code = -1;
|
|
mod_sto(CTL_C);
|
|
DosMemCheck();
|
|
#ifdef TSC
|
|
StartTrace();
|
|
#endif
|
|
return_user();
|
|
}
|
|
#endif
|
|
|
|
/* Structures needed for int 25 / int 26 */
|
|
struct HugeSectorBlock
|
|
{
|
|
ULONG blkno;
|
|
WORD nblks;
|
|
BYTE FAR *buf;
|
|
};
|
|
|
|
struct int25regs
|
|
{
|
|
UWORD es,
|
|
ds;
|
|
UWORD di,
|
|
si,
|
|
bp,
|
|
sp;
|
|
UWORD bx,
|
|
dx,
|
|
cx,
|
|
ax;
|
|
UWORD flags,
|
|
ip,
|
|
cs;
|
|
};
|
|
|
|
/* this function is called from an assembler wrapper function */
|
|
VOID int25_handler(struct int25regs FAR * r)
|
|
{
|
|
ULONG blkno;
|
|
UWORD nblks;
|
|
BYTE FAR *buf;
|
|
UBYTE drv = r->ax & 0xFF;
|
|
|
|
InDOS++;
|
|
|
|
if (r->cx == 0xFFFF)
|
|
{
|
|
struct HugeSectorBlock FAR *lb = MK_FP(r->ds, r->bx);
|
|
blkno = lb->blkno;
|
|
nblks = lb->nblks;
|
|
buf = lb->buf;
|
|
}
|
|
else
|
|
{
|
|
nblks = r->cx;
|
|
blkno = r->dx;
|
|
buf = MK_FP(r->ds, r->bx);
|
|
}
|
|
|
|
if (drv >= nblkdev)
|
|
{
|
|
r->ax = 0x202;
|
|
r->flags |= FLG_CARRY;
|
|
return;
|
|
}
|
|
|
|
if (!dskxfer(drv, blkno, buf, nblks, DSKREAD))
|
|
{
|
|
/* XXX: should tell the user exactly what the error was */
|
|
r->ax = 0x202;
|
|
r->flags |= FLG_CARRY;
|
|
return;
|
|
}
|
|
|
|
r->ax = 0;
|
|
r->flags &= ~FLG_CARRY;
|
|
--InDOS;
|
|
}
|
|
|
|
VOID int26_handler(struct int25regs FAR * r)
|
|
{
|
|
ULONG blkno;
|
|
UWORD nblks;
|
|
BYTE FAR *buf;
|
|
UBYTE drv = r->ax & 0xFF;
|
|
|
|
InDOS++;
|
|
|
|
if (r->cx == 0xFFFF)
|
|
{
|
|
struct HugeSectorBlock FAR *lb = MK_FP(r->ds, r->bx);
|
|
blkno = lb->blkno;
|
|
nblks = lb->nblks;
|
|
buf = lb->buf;
|
|
}
|
|
else
|
|
{
|
|
nblks = r->cx;
|
|
blkno = r->dx;
|
|
buf = MK_FP(r->ds, r->bx);
|
|
}
|
|
|
|
if (drv >= nblkdev)
|
|
{
|
|
r->ax = 0x202;
|
|
r->flags |= FLG_CARRY;
|
|
return;
|
|
}
|
|
|
|
if (!dskxfer(drv, blkno, buf, nblks, DSKWRITE))
|
|
{
|
|
/* XXX: should tell the user exactly what the error was */
|
|
r->ax = 0x202;
|
|
r->flags |= FLG_CARRY;
|
|
return;
|
|
}
|
|
|
|
setinvld(drv);
|
|
|
|
r->ax = 0;
|
|
r->flags &= ~FLG_CARRY;
|
|
--InDOS;
|
|
}
|
|
|
|
VOID INRPT FAR int28_handler(void)
|
|
{
|
|
}
|
|
|
|
VOID INRPT FAR int2a_handler(void)
|
|
{
|
|
}
|
|
|
|
VOID INRPT FAR empty_handler(void)
|
|
{
|
|
}
|
|
|
|
#ifdef TSC
|
|
static VOID StartTrace(VOID)
|
|
{
|
|
if (bTraceNext)
|
|
{
|
|
#ifdef DEBUG
|
|
bDumpRegs = TRUE;
|
|
#endif
|
|
bTraceNext = FALSE;
|
|
}
|
|
#ifdef DEBUG
|
|
else
|
|
bDumpRegs = FALSE;
|
|
#endif
|
|
}
|
|
#endif
|
|
|