Subversion Repositories SvarDOS

/* This file is part of the SvarCOM project and is published under the terms

 * of the MIT license.

 *

 * Copyright (C) 2021 Mateusz Viste

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

#ifndef RMODINIT_H

#define RMODINIT_H

#define FLAG_EXEC_AND_QUIT 1

#define FLAG_PERMANENT 2

struct rmod_props {

  char inputbuf[130];         /* input buffer for INT 21, AH=0x0A */

  unsigned short rmodseg;     /* segment where rmod is loaded */

  unsigned long origparent;   /* original parent (far ptr) of the shell */

  unsigned char flags;        /* command line parameters */

  unsigned char echoflag;     /* ECHO ON / ECHO OFF */

};

#define RMOD_OFFSET_ENVSEG     0x08

#define RMOD_OFFSET_LEXITCODE  0x0A

#define RMOD_OFFSET_COMSPECPTR 0x0C

#define RMOD_OFFSET_BOOTDRIVE  0x0E

#define RMOD_OFFSET_ROUTINE    0x1D

struct rmod_props far *rmod_install(unsigned short envsize);

struct rmod_props far *rmod_find(void);

void rmod_updatecomspecptr(unsigned short rmod_seg, unsigned short env_seg);

#endif