Category : C Source Code
Archive   : J414SRC.ZIP
Filename : SYSDEP.H

/***************************************************************************
* This program is Copyright (C) 1986, 1987, 1988 by Jonathan Payne. JOVE *
* is provided to you without charge, and with no warranty. You may give *
* away copies of JOVE, including sources, provided that this notice is *
* included in all the files. *
***************************************************************************/

#ifdef THINK_C
# define MAC 1
# define defined(x) (x) /* take this out and you're in trouble... */
typedef int size_t;
#endif

#if defined(MAC) || defined(MSDOS)
extern int errno;
#endif /* MAC */

#if !(defined(MSDOS) || defined(MAC) || defined(__STDC__))
# define void int
#endif

#ifndef __STDC__
#define const
#endif

/* The operating system (MSDOS or MAC) must be defined by this point.
IBMPC is defined in the Makefile. All MAC defines should be
numerical (i.e. #define MAC 1) so that defined() will work. */

#if !(defined(MSDOS) || defined(MAC))
# define UNIX
#endif

#ifdef UNIX
# if !sun
extern int errno;
# endif
# if sun
# define YP_PASSWD /* if you are a sun running the yellow pages */
# endif
# define KILL0 /* kill(pid, 0) returns 0 if proc exists */
#endif /* UNIX */

#ifdef UNIX
# ifdef pdp11
# define SMALL
# define JBUFSIZ 512 /* or 1024 */
# define NBUF 3
# else
# define VMUNIX /* Virtual Memory UNIX */
# define JBUFSIZ 1024
# ifdef iAPX286
# define NBUF 48 /* NBUF*JBUFSIZ must be less than 64 kB */
# else
# define NBUF 64 /* number of disk buffers */
# endif /* iAPX286 */
# endif
#endif

#ifdef SMALL
typedef unsigned short daddr;
#else
# if defined(iAPX286) || defined(MSDOS) || defined(MAC)
typedef long daddr;
# else
typedef int daddr;
# endif /* iAPX286 */
#endif /* SMALL */

#ifdef UNIX
/* pick your version of Unix */
# define BSD4_2 /* Berkeley 4.2 BSD */
# define BSD4_3 /* Berkeley 4.3 BSD and 2.10 BSD */
/*# define SYSV /* for (System III/System V) UNIX systems */
/*# define SYSVR2 /* system 5, rel. 2 */
/*# define SYSVR3 /* system 5, rel. 3 */
/* M_XENIX is defined by the Compiler */
#endif /* UNIX */

#ifdef SYSVR3
# ifndef SYSVR2
# define SYSVR2 /* SYSVR2 is a subset of SYSVR3 */
# endif
# define SIGRESULT void
# define SIGRETURN { return; }
# ifndef SIGCHLD
# define SIGCHLD SIGCLD
# endif
#endif

#ifdef SYSVR2
# ifndef SYSV
# define SYSV /* SYSV is a subset of SYSVR2 */
# endif
#endif

#ifdef BSD4_3
# ifndef BSD4_2
# define BSD4_2 /* 4.3 is 4.2 only different. */
# endif
#endif

#ifdef M_XENIX
# define iAPX286 1 /* we have segments */
# define BSD_DIR
#endif

#ifdef MSDOS
# ifdef M_I86LM /* large memory model */
# define NBUF 64
# else
# define NBUF 3
# define SMALL
# endif
# define JBUFSIZ 512 /* or 1024 */
#endif

#if (defined(BSD4_3) || defined(MAC))
# define RESHAPING /* enable windows to handle reshaping */
#endif

#ifdef BSD4_2 /* byte_copy(from, to, len) */
# define byte_copy bcopy /* use fast assembler version */
# define byte_zero bzero
# define strchr index
# define strrchr rindex
# define BSD_SIGS /* Berkeley style signals */
# define BSD_WAIT /* Berkeley style sys/wait.h */
# define WAIT3 /* Berkeley style wait3() */
# define BSD_DIR /* Berkeley style dirent routines */
# define VFORK /* if you have vfork(2) */
# define JOB_CONTROL /* if you have job stopping */
#endif

#ifdef JOB_CONTROL
# define MENLO_JCL
#endif

#ifdef apple_ux /* A/UX on a MacII */
# define BSD_WAIT /* Berkeley style sys/wait.h */
# define BSD_DIR /* Berkeley style dirent routines */
# define WAIT3 /* Berkeley style wait3() */
# define BSD_SIGS /* Berkeley style signals */
#endif

#ifdef mips
/*
* MIPS and SGI boxes have BSD style wait, and directory routines if you link
* -lbsd and define -I/usr/include/bsd on the compile line. But they have SysV
* style signals.
*/
# define BSD_WAIT /* Berkeley style sys/wait.h */
# define BSD_DIR /* Berkeley style dirent routines */
# ifdef sgi
# define WAIT3 /* Berkeley style wait3() */
# endif
#endif

#ifndef VFORK
# define vfork fork
#endif

#ifndef BSD4_2
# define PIPEPROCS /* if IPROCS selected, use pipes */
#endif

#if defined(SYSV) || defined(MSDOS) || defined(M_XENIX)
#include
# define byte_copy(s2, s1, n) memcpy((s1), (s2), (n))
# define byte_zero(s, n) memset((s), 0, (n))
#endif

#ifndef SIGRESULT
# define SIGRESULT int
# define SIGRETURN { return 0; }
#endif

#ifndef BSD4_2
# ifdef MENLO_JCL
# define signal sigset
# endif /* MENLO_JCL */
#endif

#if !(defined(IBMPC) || defined(MAC))
# define TERMCAP
# define ASCII
#endif

#ifdef ASCII /* seven bit characters */
# define NCHARS 0200
#else
# define NCHARS 0400
#endif

#define CHARMASK (NCHARS - 1)

#ifndef MSDOS
# define FILESIZE 256
#else /* MSDOS */
# define FILESIZE 64
#endif /* MSDOS */

#if defined(BSD_SIGS)
extern long SigMask;

# define SigHold(s) sigblock(SigMask |= sigmask((s)))
# define SigRelse(s) sigsetmask(SigMask &= ~sigmask((s)))
#else
# define SigHold(s) sighold(s)
# define SigRelse(s) sigrelse(s)
# define killpg(pid, sig) kill(-(pid), (sig))
#endif