Last change
on this file since 7bf3856 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 8 years ago |
Imported original source code.
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File size:
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1 | /*
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2 | =============================================================================
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3 | mtexit.c -- Multi-Tasker -- task termination
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4 | Version 1 -- 1988-04-11 -- D.N. Lynx Crowe
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5 | (c) Copyright 1988 -- D.N. Lynx Crowe
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6 | =============================================================================
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7 | */
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8 |
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9 | #include "stddefs.h"
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10 | #include "biosdefs.h"
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11 | #include "mtdefs.h"
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12 | #include "debug.h"
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13 |
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14 | extern short setipl(); /* set processor IPL function */
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15 |
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16 | extern struct _mtdef *_MT_; /* Multi-Tasker structure pointer */
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17 |
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18 | /* |
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19 |
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20 | */
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21 |
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22 | /*
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23 | =============================================================================
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24 | MTExit() -- terminate current task (never returns)
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25 | =============================================================================
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26 | */
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27 |
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28 | MTExit()
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29 | {
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30 | register short oldipl;
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31 |
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32 | DB_ENTR("MTExit");
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33 |
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34 | if ((struct _mt_def *)NIL EQ _MT_)
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35 | _MT_ = (struct _mt_def *)XBIOS(X_MTDEFS);
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36 |
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37 | oldipl = setipl(7); /* DISABLE INTERRUPTS */
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38 | _MT_->mtp->CurP->flags = 0; /* clear our flags (deallocate TCB) */
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39 | setipl(oldipl); /* RESTORE INTERRUPTS */
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40 |
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41 | iquit:
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42 | MTNext(); /* swap task out of existence */
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43 |
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44 | printf("\nMTExit(): ERROR -- MTNext() returned\n\n");
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45 |
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46 | xtrap15(); /* trap to ROMP */
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47 | goto iquit;
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48 | }
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