4.3BSD - /usr/src/usr.lib/libpc/PCSTART.c

   1: /* Copyright (c) 1979 Regents of the University of California */
   2: 
   3: static char sccsid[] = "@(#)PCSTART.c 1.8 1/10/83";
   4: 
   5: #include <signal.h>
   6: #include "h00vars.h"
   7: #include "libpc.h"
   8: 
   9: /*
  10:  * program variables
  11:  */
  12: struct display  _disply[MAXLVL];
  13: int     _argc;
  14: char        **_argv;
  15: long        _stlim = 500000;
  16: long        _stcnt = 0;
  17: long        _seed = 1;
  18: #ifdef ADDR32
  19: char        *_minptr = (char *)0x7fffffff;
  20: #endif ADDR32
  21: #ifdef ADDR16
  22: char        *_minptr = (char *)0xffff;
  23: #endif ADDR16
  24: char        *_maxptr = (char *)0;
  25: 
  26: /*
  27:  * file record variables
  28:  */
  29: long        _filefre = PREDEF;
  30: struct iorechd  _fchain = {
  31:     0, 0, 0, 0,     /* only use fchain field */
  32:     INPUT           /* fchain  */
  33: };
  34: struct iorec    *_actfile[MAXFILES] = {
  35:     INPUT,
  36:     OUTPUT,
  37:     ERR
  38: };
  39: 
  40: /*
  41:  * standard files
  42:  */
  43: char        _inwin, _outwin, _errwin;
  44: struct iorechd  input = {
  45:     &_inwin,        /* fileptr */
  46:     0,          /* lcount  */
  47:     0x7fffffff,     /* llimit  */
  48:     &_iob[0],       /* fbuf    */
  49:     OUTPUT,         /* fchain  */
  50:     STDLVL,         /* flev    */
  51:     "standard input",   /* pfname  */
  52:     FTEXT|FREAD|SYNC|EOLN,  /* funit   */
  53:     0,          /* fblk    */
  54:     1           /* fsize   */
  55: };
  56: struct iorechd  output = {
  57:     &_outwin,       /* fileptr */
  58:     0,          /* lcount  */
  59:     0x7fffffff,     /* llimit  */
  60:     &_iob[1],       /* fbuf    */
  61:     ERR,            /* fchain  */
  62:     STDLVL,         /* flev    */
  63:     "standard output",  /* pfname  */
  64:     FTEXT | FWRITE | EOFF,  /* funit   */
  65:     1,          /* fblk    */
  66:     1           /* fsize   */
  67: };
  68: struct iorechd  _err = {
  69:     &_errwin,       /* fileptr */
  70:     0,          /* lcount  */
  71:     0x7fffffff,     /* llimit  */
  72:     &_iob[2],       /* fbuf    */
  73:     FILNIL,         /* fchain  */
  74:     STDLVL,         /* flev    */
  75:     "Message file",     /* pfname  */
  76:     FTEXT | FWRITE | EOFF,  /* funit   */
  77:     2,          /* fblk    */
  78:     1           /* fsize   */
  79: };
  80: 
  81: PCSTART(mode)
  82:     int mode;
  83: {
  84:     /*
  85: 	 * necessary only on systems which do not initialize
  86: 	 * memory to zero
  87: 	 */
  88: 
  89:     struct iorec    **ip;
  90: 
  91:     /*
  92: 	 * if running with runtime tests enabled, give more
  93: 	 * coherent error messages for FPEs
  94: 	 */
  95:     if (mode) {
  96:         signal(SIGFPE, EXCEPT);
  97:     }
  98:     for (ip = &_actfile[3]; ip < &_actfile[MAXFILES]; *ip++ = FILNIL);
  99: }

Defined functions

Defined variables