Mercurial > hg > xemacs-beta

/* Synched up with: FSF 19.31. */

/* For building XEmacs under SunOS 4.1.* with static libraries. */

#ifndef _S_SUNOS4_H_
#define _S_SUNOS4_H_

#include "bsd4-2.h"

#ifndef SUNOS4
#define SUNOS4
#endif

#if 0  /* This may have been needed for an earlier version of Sun OS 4.
	  It seems to cause warnings in 4.0.3 and 4.1.  */
#define O_NDELAY        FNDELAY /* Non-blocking I/O (4.2 style) */
#endif

#ifdef NOT_C_CODE
  /* The new sunOS unexec eliminates the need for a custom crt0.o, so we
     can just let the compiler invoke the linker and don't have to guess
     what options it might have passed it. */
# define ORDINARY_LINK
# define START_FILES
# define LD_CMD $(CC)
# ifndef LD_SWITCH_SYSTEM
# define LD_SWITCH_SYSTEM "-Bstatic"
# endif
# define UNEXEC "unexsunos4.o"
#endif /* NOT_C_CODE */

#define RUN_TIME_REMAP

/* these don't matter, but we have to define something to keep
   sysdep.c from introducing bogus symbols */
#define TEXT_START 0
#define DATA_START 0

/* #### XEmacs: #define of SYSTEM_MALLOC removed.  Is this OK?  FSF says:

   In SunOS 4.1, a static function called by tzsetwall reportedly
   clears the byte just past an eight byte region it mallocs, corrupting
   GNU malloc's memory pool.  But Sun's malloc doesn't seem to mind. */

/* XEmacs: additions for proper prototyping. */
#ifndef NOT_C_CODE
#ifdef __STDC__
/* Sun's headers are categorically losing.
   Mly uses broken-sun.h to get the protos for this, but lcc provides all
   of the prototypes for the ANSI routines.  So I'm just going to put the
   protos of the non-ANSI routines that we use here (I guess that would
   be things that are Posix but not ANSI?)  You're in a maze of twisty
   little standards, all alike...
 */
/* Since lcc is not going to be heavily used anymore if it ever was, I'm
   putting broken-sun.h back in. */
/* Since Gcc 2.8 appears to have fixed the problem, I'm conditionalizing */
/* this ugly hack. */

#if defined (__GNUC__)
#if defined (__GNUC_MINOR__)
#if ((__GNUC__ == 2) && (__GNUC_MINOR__ > 7)) || ((__GNUC__ > 2))
/* Don't include for gcc 2.8.0*/
#else
#include "../broken-sun.h"
#endif

#else /* __GNUC_MINOR__ is undefined */
#include "../broken-sun.h"
#endif

#else
/* Not GNU C */
#endif

extern char *strdup ();
extern char *ttyname (int);
extern void tzsetwall (void);
extern int getpagesize (void);

#include <memory.h>
#ifdef __SUNPRO_C
/* Suppress zillions of warnings from outdated SunOS4 prototypes */
/* Bother! Sun can't even get the arg types right. */
#include <string.h>
#define memset(a,b,c) memset((char*) (a), b, c)
#define memcpy(a,b,c) memcpy((char*) (a), (char*) (b), c)
#define memcmp(a,b,c) memcmp((char*) (a), (char*) (b), c)
#define memchr(a,b,c) memchr((char*) (a), b, c)
void * __builtin_alloca(int);
#ifdef HAVE_X_WINDOWS
#include <X11/Xlib.h>
#define XFree(p) XFree((char*)(p))
#endif /* X Windows */
#endif /* __SUNPRO_C */

#endif /* __STDC__ */

# ifdef __GNUC__
  /* XEmacs addition: */
  /* gcc has the bug that it claims to conform to the ANSI C standard
     (which is what setting __STDC__ to 1 means) but does not necessarily
     provide all of the library routines which the standard requires of a
     conforming compiler -- such as memmove.  The other Sun ANSI compilers
     (Sun's acc and Lucid's lcc) do not have this bug. */
#  define memmove(to, from, size) bcopy ((char *) (from), (char *) (to), (size))
/* We must define mkdir with this arg prototype
   to match GCC's fixed stat.h.  */
#  define MKDIR_PROTOTYPE \
  int mkdir (const char *dpath, unsigned short dmode)
# endif /* __GNUC__ */

/* ANSI C requires that realloc accept a null pointer argument,
   but ancient implementations such as SunOS 4 don't allow this.
   We redefine realloc here so that the source code can be written to
   use the ANSI C API. */
#include <sys/types.h>
#ifdef __GNUC__
inline	/* Suppress warning: realloc_accepting_nullptr defined but not used */
#endif
static void*
realloc_accepting_nullptr (void *ptr, size_t size)
{
  extern char *realloc ();
  extern char *malloc ();
  return ptr ? (void *) realloc (ptr, size) : (void *) malloc (size);
}
#define realloc(ptr, size) realloc_accepting_nullptr (ptr, size)

#endif /* C_CODE */

#endif /* _S_SUNOS4_H_ */
author	Aidan Kehoe <kehoea@parhasard.net>
date	Wed, 09 Jul 2008 20:46:22 +0200
parents	e9a3f8b4de53
children