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421 mateuszvis 1
/* This file is part of the SvarCOM project and is published under the terms
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 * of the MIT license.
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 *
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 * Copyright (C) 2021 Mateusz Viste
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 */
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#ifndef RMODINIT_H
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#define RMODINIT_H
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#define FLAG_EXEC_AND_QUIT 1
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#define FLAG_PERMANENT 2
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struct rmod_props {
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  char inputbuf[130];         /* input buffer for INT 21, AH=0x0A */
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  unsigned short rmodseg;     /* segment where rmod is loaded */
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  unsigned long origparent;   /* original parent (far ptr) of the shell */
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  unsigned char flags;        /* command line parameters */
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  unsigned char echoflag;     /* ECHO ON / ECHO OFF */
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};
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#define RMOD_OFFSET_ENVSEG     0x08
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#define RMOD_OFFSET_LEXITCODE  0x0A
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#define RMOD_OFFSET_COMSPECPTR 0x0C
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#define RMOD_OFFSET_BOOTDRIVE  0x0E
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#define RMOD_OFFSET_ROUTINE    0x1D
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struct rmod_props far *rmod_install(unsigned short envsize);
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struct rmod_props far *rmod_find(void);
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void rmod_updatecomspecptr(unsigned short rmod_seg, unsigned short env_seg);
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#endif