/*    perl.h
 *
 *    Copyright (c) 1987-1997, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */
#ifndef H_PERL
#define H_PERL 1
#define OVERLOAD

#ifdef PERL_FOR_X2P
/*
 * This file is being used for x2p stuff. 
 * Above symbol is defined via -D in 'x2p/Makefile.SH'
 * Decouple x2p stuff from some of perls more extreme eccentricities. 
 */
#undef EMBED
#undef NO_EMBED
#define NO_EMBED
#undef MULTIPLICITY
#undef USE_STDIO
#define USE_STDIO
#endif /* PERL_FOR_X2P */

#ifdef PERL_OBJECT

/* PERL_OBJECT explained  - DickH and DougL @ ActiveState.com

Defining PERL_OBJECT turns on creation of a C++ object that
contains all writable core perl global variables and functions.
Stated another way, all necessary global variables and functions
are members of a big C++ object. This object's class is CPerlObj.
This allows a Perl Host to have multiple, independent perl
interpreters in the same process space. This is very important on
Win32 systems as the overhead of process creation is quite high --
this could be even higher than the script compile and execute time
for small scripts.

The perl executable implementation on Win32 is composed of perl.exe
(the Perl Host) and perlX.dll. (the Perl Core). This allows the
same Perl Core to easily be embedded in other applications that use
the perl interpreter.

+-----------+
| Perl Host |
+-----------+
      ^
	  |
	  v
+-----------+   +-----------+
| Perl Core |<->| Extension |
+-----------+   +-----------+ ...

Defining PERL_OBJECT has the following effects:

PERL CORE
1. CPerlObj is defined (this is the PERL_OBJECT)
2. all static functions that needed to access either global
variables or functions needed are made member functions
3. all writable static variables are made member variables
4. all global variables and functions are defined as:
	#define var CPerlObj::Perl_var
	#define func CPerlObj::Perl_func
	* these are in objpp.h
This necessitated renaming some local variables and functions that
had the same name as a global variable or function. This was
probably a _good_ thing anyway.


EXTENSIONS
1. Access to global variables and perl functions is through a
pointer to the PERL_OBJECT. This pointer type is CPerlObj*. This is
made transparent to extension developers by the following macros:
	#define var pPerl->Perl_var
	#define func pPerl->Perl_func
	* these are done in objXSUB.h
This requires that the extension be compiled as C++, which means
that the code must be ANSI C and not K&R C. For K&R extensions,
please see the C API notes located in Win32/GenCAPI.pl. This script
creates a perlCAPI.lib that provides a K & R compatible C interface
to the PERL_OBJECT.
2. Local variables and functions cannot have the same name as perl's
variables or functions since the macros will redefine these. Look for
this if you get some strange error message and it does not look like
the code that you had written. This often happens with variables that
are local to a function.

PERL HOST
1. The perl host is linked with perlX.lib to get perl_alloc. This
function will return a pointer to CPerlObj (the PERL_OBJECT). It
takes pointers to the various PerlXXX_YYY interfaces (see iperlsys.h
for more information on this).
2. The perl host calls the same functions as normally would be
called in setting up and running a perl script, except that the
functions are now member functions of the PERL_OBJECT.

*/


class CPerlObj;

#define STATIC
#define CPERLscope(x) CPerlObj::x
#define CPERLproto CPerlObj *
#define _CPERLproto ,CPERLproto
#define CPERLarg CPerlObj *pPerl
#define CPERLarg_ CPERLarg,
#define _CPERLarg ,CPERLarg
#define PERL_OBJECT_THIS this
#define _PERL_OBJECT_THIS ,this
#define PERL_OBJECT_THIS_ this,
#define CALLRUNOPS (this->*PL_runops)
#define CALLREGCOMP (this->*PL_regcompp)
#define CALLREGEXEC (this->*PL_regexecp)

#else /* !PERL_OBJECT */

#define STATIC static
#define CPERLscope(x) x
#define CPERLproto
#define _CPERLproto
#define CPERLarg void
#define CPERLarg_
#define _CPERLarg
#define PERL_OBJECT_THIS
#define _PERL_OBJECT_THIS
#define PERL_OBJECT_THIS_
#define CALLRUNOPS PL_runops
#define CALLREGCOMP (*PL_regcompp)
#define CALLREGEXEC (*PL_regexecp)

#endif /* PERL_OBJECT */

#define VOIDUSED 1
#include "config.h"

#include "embed.h"

#undef START_EXTERN_C
#undef END_EXTERN_C
#undef EXTERN_C
#ifdef __cplusplus
#  define START_EXTERN_C extern "C" {
#  define END_EXTERN_C }
#  define EXTERN_C extern "C"
#else
#  define START_EXTERN_C 
#  define END_EXTERN_C 
#  define EXTERN_C
#endif

#ifdef OP_IN_REGISTER
#  ifdef __GNUC__
#    define stringify_immed(s) #s
#    define stringify(s) stringify_immed(s)
#ifdef EMBED
register struct op *Perl_op asm(stringify(OP_IN_REGISTER));
#else
register struct op *op asm(stringify(OP_IN_REGISTER));
#endif
#  endif
#endif

/*
 * STMT_START { statements; } STMT_END;
 * can be used as a single statement, as in
 * if (x) STMT_START { ... } STMT_END; else ...
 *
 * Trying to select a version that gives no warnings...
 */
#if !(defined(STMT_START) && defined(STMT_END))
# if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(__cplusplus)
#   define STMT_START	(void)(	/* gcc supports ``({ STATEMENTS; })'' */
#   define STMT_END	)
# else
   /* Now which other defined()s do we need here ??? */
#  if (VOIDFLAGS) && (defined(sun) || defined(__sun__))
#   define STMT_START	if (1)
#   define STMT_END	else (void)0
#  else
#   define STMT_START	do
#   define STMT_END	while (0)
#  endif
# endif
#endif

#define NOOP (void)0

#define WITH_THR(s) STMT_START { dTHR; s; } STMT_END

/*
 * SOFT_CAST can be used for args to prototyped functions to retain some
 * type checking; it only casts if the compiler does not know prototypes.
 */
#if defined(CAN_PROTOTYPE) && defined(DEBUGGING_COMPILE)
#define SOFT_CAST(type)	
#else
#define SOFT_CAST(type)	(type)
#endif

#ifndef BYTEORDER  /* Should never happen -- byteorder is in config.h */
#   define BYTEORDER 0x1234
#endif

/* Overall memory policy? */
#ifndef CONSERVATIVE
#   define LIBERAL 1
#endif

/*
 * The following contortions are brought to you on behalf of all the
 * standards, semi-standards, de facto standards, not-so-de-facto standards
 * of the world, as well as all the other botches anyone ever thought of.
 * The basic theory is that if we work hard enough here, the rest of the
 * code can be a lot prettier.  Well, so much for theory.  Sorry, Henry...
 */

/* define this once if either system, instead of cluttering up the src */
#if defined(MSDOS) || defined(atarist) || defined(WIN32)
#define DOSISH 1
#endif

#if defined(__STDC__) || defined(vax11c) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus)
# define STANDARD_C 1
#endif

#if defined(__cplusplus) || defined(WIN32) || defined(__sgi) || defined(OS2) || defined(__DGUX)
# define DONT_DECLARE_STD 1
#endif

#if defined(HASVOLATILE) || defined(STANDARD_C)
#   ifdef __cplusplus
#	define VOL		// to temporarily suppress warnings
#   else
#	define VOL volatile
#   endif
#else
#   define VOL
#endif

#define TAINT		(PL_tainted = TRUE)
#define TAINT_NOT	(PL_tainted = FALSE)
#define TAINT_IF(c)	if (c) { PL_tainted = TRUE; }
#define TAINT_ENV()	if (PL_tainting) { taint_env(); }
#define TAINT_PROPER(s)	if (PL_tainting) { taint_proper(no_security, s); }

/* XXX All process group stuff is handled in pp_sys.c.  Should these 
   defines move there?  If so, I could simplify this a lot. --AD  9/96.
*/
/* Process group stuff changed from traditional BSD to POSIX.
   perlfunc.pod documents the traditional BSD-style syntax, so we'll
   try to preserve that, if possible.
*/
#ifdef HAS_SETPGID
#  define BSD_SETPGRP(pid, pgrp)	setpgid((pid), (pgrp))
#else
#  if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
#    define BSD_SETPGRP(pid, pgrp)	setpgrp((pid), (pgrp))
#  else
#    ifdef HAS_SETPGRP2  /* DG/UX */
#      define BSD_SETPGRP(pid, pgrp)	setpgrp2((pid), (pgrp))
#    endif
#  endif
#endif
#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
#  define HAS_SETPGRP  /* Well, effectively it does . . . */
#endif

/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
    our life easier :-) so we'll try it.
*/
#ifdef HAS_GETPGID
#  define BSD_GETPGRP(pid)		getpgid((pid))
#else
#  if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
#    define BSD_GETPGRP(pid)		getpgrp((pid))
#  else
#    ifdef HAS_GETPGRP2  /* DG/UX */
#      define BSD_GETPGRP(pid)		getpgrp2((pid))
#    endif
#  endif
#endif
#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
#  define HAS_GETPGRP  /* Well, effectively it does . . . */
#endif

/* These are not exact synonyms, since setpgrp() and getpgrp() may 
   have different behaviors, but perl.h used to define USE_BSDPGRP
   (prior to 5.003_05) so some extension might depend on it.
*/
#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
#  ifndef USE_BSDPGRP
#    define USE_BSDPGRP
#  endif
#endif

#ifndef _TYPES_		/* If types.h defines this it's easy. */
#   ifndef major		/* Does everyone's types.h define this? */
#	include <sys/types.h>
#   endif
#endif

#ifdef __cplusplus
#  ifndef I_STDARG
#    define I_STDARG 1
#  endif
#endif

#ifdef I_STDARG
#  include <stdarg.h>
#else
#  ifdef I_VARARGS
#    include <varargs.h>
#  endif
#endif

#include "iperlsys.h"

#ifdef USE_NEXT_CTYPE

#if NX_CURRENT_COMPILER_RELEASE >= 400
#include <objc/NXCType.h>
#else /*  NX_CURRENT_COMPILER_RELEASE < 400 */
#include <appkit/NXCType.h>
#endif /*  NX_CURRENT_COMPILER_RELEASE >= 400 */

#else /* !USE_NEXT_CTYPE */
#include <ctype.h>
#endif /* USE_NEXT_CTYPE */

#ifdef METHOD 	/* Defined by OSF/1 v3.0 by ctype.h */
#undef METHOD
#endif

#ifdef I_LOCALE
#   include <locale.h>
#endif

#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
#   define USE_LOCALE
#   if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
       && defined(HAS_STRXFRM)
#	define USE_LOCALE_COLLATE
#   endif
#   if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
#	define USE_LOCALE_CTYPE
#   endif
#   if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
#	define USE_LOCALE_NUMERIC
#   endif
#endif /* !NO_LOCALE && HAS_SETLOCALE */

#include <setjmp.h>

#ifdef I_SYS_PARAM
#   ifdef PARAM_NEEDS_TYPES
#	include <sys/types.h>
#   endif
#   include <sys/param.h>
#endif


/* Use all the "standard" definitions? */
#if defined(STANDARD_C) && defined(I_STDLIB)
#   include <stdlib.h>
#endif

#define MEM_SIZE Size_t

/* This comes after <stdlib.h> so we don't try to change the standard
 * library prototypes; we'll use our own in proto.h instead. */

#ifdef MYMALLOC

#   ifdef HIDEMYMALLOC
#	define malloc  Mymalloc
#	define calloc  Mycalloc
#	define realloc Myrealloc
#	define free    Myfree
Malloc_t Mymalloc _((MEM_SIZE nbytes));
Malloc_t Mycalloc _((MEM_SIZE elements, MEM_SIZE size));
Malloc_t Myrealloc _((Malloc_t where, MEM_SIZE nbytes));
Free_t   Myfree _((Malloc_t where));
#   endif
#   ifdef EMBEDMYMALLOC
#	define malloc  Perl_malloc
#	define calloc  Perl_calloc
#	define realloc Perl_realloc
/* VMS' external symbols are case-insensitive, and there's already a */
/* perl_free in perl.h */
#ifdef VMS
#	define free    Perl_myfree
#else
#	define free    Perl_free
#endif
Malloc_t Perl_malloc _((MEM_SIZE nbytes));
Malloc_t Perl_calloc _((MEM_SIZE elements, MEM_SIZE size));
Malloc_t Perl_realloc _((Malloc_t where, MEM_SIZE nbytes));
#ifdef VMS
Free_t   Perl_myfree _((Malloc_t where));
#else
Free_t   Perl_free _((Malloc_t where));
#endif
#   endif

#   undef safemalloc
#   undef safecalloc
#   undef saferealloc
#   undef safefree
#   define safemalloc  malloc
#   define safecalloc  calloc
#   define saferealloc realloc
#   define safefree    free

#endif /* MYMALLOC */

#if defined(STANDARD_C) && defined(I_STDDEF)
#   include <stddef.h>
#   define STRUCT_OFFSET(s,m)  offsetof(s,m)
#else
#   define STRUCT_OFFSET(s,m)  (Size_t)(&(((s *)0)->m))
#endif

#if defined(I_STRING) || defined(__cplusplus)
#   include <string.h>
#else
#   include <strings.h>
#endif

#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
#define strchr index
#define strrchr rindex
#endif

#ifdef I_MEMORY
#  include <memory.h>
#endif

#ifdef HAS_MEMCPY
#  if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
#    ifndef memcpy
        extern char * memcpy _((char*, char*, int));
#    endif
#  endif
#else
#   ifndef memcpy
#	ifdef HAS_BCOPY
#	    define memcpy(d,s,l) bcopy(s,d,l)
#	else
#	    define memcpy(d,s,l) my_bcopy(s,d,l)
#	endif
#   endif
#endif /* HAS_MEMCPY */

#ifdef HAS_MEMSET
#  if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
#    ifndef memset
	extern char *memset _((char*, int, int));
#    endif
#  endif
#else
#  define memset(d,c,l) my_memset(d,c,l)
#endif /* HAS_MEMSET */

#if !defined(HAS_MEMMOVE) && !defined(memmove)
#   if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
#	define memmove(d,s,l) bcopy(s,d,l)
#   else
#	if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
#	    define memmove(d,s,l) memcpy(d,s,l)
#	else
#	    define memmove(d,s,l) my_bcopy(s,d,l)
#	endif
#   endif
#endif

#if defined(mips) && defined(ultrix) && !defined(__STDC__)
#   undef HAS_MEMCMP
#endif

#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
#  if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
#    ifndef memcmp
	extern int memcmp _((char*, char*, int));
#    endif
#  endif
#  ifdef BUGGY_MSC
  #  pragma function(memcmp)
#  endif
#else
#   ifndef memcmp
#	define memcmp 	my_memcmp
#   endif
#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */

#ifndef memzero
#   ifdef HAS_MEMSET
#	define memzero(d,l) memset(d,0,l)
#   else
#	ifdef HAS_BZERO
#	    define memzero(d,l) bzero(d,l)
#	else
#	    define memzero(d,l) my_bzero(d,l)
#	endif
#   endif
#endif

#ifndef HAS_BCMP
#   ifndef bcmp
#	define bcmp(s1,s2,l) memcmp(s1,s2,l)
#   endif
#endif /* !HAS_BCMP */

#ifdef I_NETINET_IN
#   include <netinet/in.h>
#endif

#ifdef I_ARPA_INET
#   include <arpa/inet.h>
#endif

#if defined(SF_APPEND) && defined(USE_SFIO) && defined(I_SFIO)
/* <sfio.h> defines SF_APPEND and <sys/stat.h> might define SF_APPEND
 * (the neo-BSD seem to do this).  */
#   undef SF_APPEND
#endif

#ifdef I_SYS_STAT
#   include <sys/stat.h>
#endif

/* The stat macros for Amdahl UTS, Unisoft System V/88 (and derivatives
   like UTekV) are broken, sometimes giving false positives.  Undefine
   them here and let the code below set them to proper values.

   The ghs macro stands for GreenHills Software C-1.8.5 which
   is the C compiler for sysV88 and the various derivatives.
   This header file bug is corrected in gcc-2.5.8 and later versions.
   --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94.  */

#if defined(uts) || (defined(m88k) && defined(ghs))
#   undef S_ISDIR
#   undef S_ISCHR
#   undef S_ISBLK
#   undef S_ISREG
#   undef S_ISFIFO
#   undef S_ISLNK
#endif

#ifdef I_TIME
#   include <time.h>
#endif

#ifdef I_SYS_TIME
#   ifdef I_SYS_TIME_KERNEL
#	define KERNEL
#   endif
#   include <sys/time.h>
#   ifdef I_SYS_TIME_KERNEL
#	undef KERNEL
#   endif
#endif

#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
#    include <sys/times.h>
#endif

#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
#   undef HAS_STRERROR
#endif

#include <errno.h>
#ifdef HAS_SOCKET
#   ifdef I_NET_ERRNO
#     include <net/errno.h>
#   endif
#endif

#ifdef VMS
#   define SETERRNO(errcode,vmserrcode) \
	STMT_START {			\
	    set_errno(errcode);		\
	    set_vaxc_errno(vmserrcode);	\
	} STMT_END
#else
#   define SETERRNO(errcode,vmserrcode) errno = (errcode)
#endif

#ifdef USE_THREADS
#  define ERRSV (thr->errsv)
#  define ERRHV (thr->errhv)
#  define DEFSV THREADSV(0)
#  define SAVE_DEFSV save_threadsv(0)
#else
#  define ERRSV GvSV(PL_errgv)
#  define ERRHV GvHV(PL_errgv)
#  define DEFSV GvSV(PL_defgv)
#  define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
#endif /* USE_THREADS */

#ifndef errno
	extern int errno;     /* ANSI allows errno to be an lvalue expr */
#endif

#ifdef HAS_STRERROR
#       ifdef VMS
	char *strerror _((int,...));
#       else
#ifndef DONT_DECLARE_STD
	char *strerror _((int));
#endif
#       endif
#       ifndef Strerror
#           define Strerror strerror
#       endif
#else
#    ifdef HAS_SYS_ERRLIST
	extern int sys_nerr;
	extern char *sys_errlist[];
#       ifndef Strerror
#           define Strerror(e) \
		((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
#       endif
#   endif
#endif

#ifdef I_SYS_IOCTL
#   ifndef _IOCTL_
#	include <sys/ioctl.h>
#   endif
#endif

#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
#   ifdef HAS_SOCKETPAIR
#	undef HAS_SOCKETPAIR
#   endif
#   ifdef I_NDBM
#	undef I_NDBM
#   endif
#endif

#if INTSIZE == 2
#   define htoni htons
#   define ntohi ntohs
#else
#   define htoni htonl
#   define ntohi ntohl
#endif

/* Configure already sets Direntry_t */
#if defined(I_DIRENT)
#   include <dirent.h>
#   if defined(NeXT) && defined(I_SYS_DIR) /* NeXT needs dirent + sys/dir.h */
#	include <sys/dir.h>
#   endif
#else
#   ifdef I_SYS_NDIR
#	include <sys/ndir.h>
#   else
#	ifdef I_SYS_DIR
#	    ifdef hp9000s500
#		include <ndir.h>	/* may be wrong in the future */
#	    else
#		include <sys/dir.h>
#	    endif
#	endif
#   endif
#endif

#ifdef FPUTS_BOTCH
/* work around botch in SunOS 4.0.1 and 4.0.2 */
#   ifndef fputs
#	define fputs(sv,fp) fprintf(fp,"%s",sv)
#   endif
#endif

/*
 * The following gobbledygook brought to you on behalf of __STDC__.
 * (I could just use #ifndef __STDC__, but this is more bulletproof
 * in the face of half-implementations.)
 */

#ifndef S_IFMT
#   ifdef _S_IFMT
#	define S_IFMT _S_IFMT
#   else
#	define S_IFMT 0170000
#   endif
#endif

#ifndef S_ISDIR
#   define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
#endif

#ifndef S_ISCHR
#   define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
#endif

#ifndef S_ISBLK
#   ifdef S_IFBLK
#	define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
#   else
#	define S_ISBLK(m) (0)
#   endif
#endif

#ifndef S_ISREG
#   define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
#endif

#ifndef S_ISFIFO
#   ifdef S_IFIFO
#	define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
#   else
#	define S_ISFIFO(m) (0)
#   endif
#endif

#ifndef S_ISLNK
#   ifdef _S_ISLNK
#	define S_ISLNK(m) _S_ISLNK(m)
#   else
#	ifdef _S_IFLNK
#	    define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
#	else
#	    ifdef S_IFLNK
#		define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
#	    else
#		define S_ISLNK(m) (0)
#	    endif
#	endif
#   endif
#endif

#ifndef S_ISSOCK
#   ifdef _S_ISSOCK
#	define S_ISSOCK(m) _S_ISSOCK(m)
#   else
#	ifdef _S_IFSOCK
#	    define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
#	else
#	    ifdef S_IFSOCK
#		define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
#	    else
#		define S_ISSOCK(m) (0)
#	    endif
#	endif
#   endif
#endif

#ifndef S_IRUSR
#   ifdef S_IREAD
#	define S_IRUSR S_IREAD
#	define S_IWUSR S_IWRITE
#	define S_IXUSR S_IEXEC
#   else
#	define S_IRUSR 0400
#	define S_IWUSR 0200
#	define S_IXUSR 0100
#   endif
#   define S_IRGRP (S_IRUSR>>3)
#   define S_IWGRP (S_IWUSR>>3)
#   define S_IXGRP (S_IXUSR>>3)
#   define S_IROTH (S_IRUSR>>6)
#   define S_IWOTH (S_IWUSR>>6)
#   define S_IXOTH (S_IXUSR>>6)
#endif

#ifndef S_ISUID
#   define S_ISUID 04000
#endif

#ifndef S_ISGID
#   define S_ISGID 02000
#endif

#ifdef ff_next
#   undef ff_next
#endif

#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
#   define SLOPPYDIVIDE
#endif

#ifdef UV
#undef UV
#endif

/*  XXX QUAD stuff is not currently supported on most systems.
    Specifically, perl internals don't support long long.  Among
    the many problems is that some compilers support long long,
    but the underlying library functions (such as sprintf) don't.
    Some things do work (such as quad pack/unpack on convex);
    also some systems use long long for the fpos_t typedef.  That
    seems to work too.

    The IV type is supposed to be long enough to hold any integral
    value or a pointer.
    --Andy Dougherty	August 1996
*/

#ifdef cray
#   define Quad_t int
#else
#   ifdef convex
#	define Quad_t long long
#   else
#	if LONGSIZE == 8
#	    define Quad_t long
#	endif
#   endif
#endif

/* XXX Experimental set-up for long long.  Just add -DUSE_LONG_LONG
   to your ccflags.  --Andy Dougherty   4/1998
*/
#ifdef USE_LONG_LONG
#  if defined(HAS_LONG_LONG) && LONGLONGSIZE == 8
#    define Quad_t long long
#  endif
#endif

#ifdef Quad_t
#   define HAS_QUAD
    typedef Quad_t IV;
    typedef unsigned Quad_t UV;
#   define IV_MAX PERL_QUAD_MAX
#   define IV_MIN PERL_QUAD_MIN
#   define UV_MAX PERL_UQUAD_MAX
#   define UV_MIN PERL_UQUAD_MIN
#else
    typedef long IV;
    typedef unsigned long UV;
#   define IV_MAX PERL_LONG_MAX
#   define IV_MIN PERL_LONG_MIN
#   define UV_MAX PERL_ULONG_MAX
#   define UV_MIN PERL_ULONG_MIN
#endif

/* Previously these definitions used hardcoded figures. 
 * It is hoped these formula are more portable, although
 * no data one way or another is presently known to me.
 * The "PERL_" names are used because these calculated constants
 * do not meet the ANSI requirements for LONG_MAX, etc., which
 * need to be constants acceptable to #if - kja
 *    define PERL_LONG_MAX        2147483647L
 *    define PERL_LONG_MIN        (-LONG_MAX - 1)
 *    define PERL ULONG_MAX       4294967295L
 */

#ifdef I_LIMITS  /* Needed for cast_xxx() functions below. */
#  include <limits.h>
#else
#ifdef I_VALUES
#  include <values.h>
#endif
#endif

/*
 * Try to figure out max and min values for the integral types.  THE CORRECT
 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE.  The
 * following hacks are used if neither limits.h or values.h provide them:
 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
 *              for types <  int:  (unsigned TYPE)~(unsigned)0
 *	The argument to ~ must be unsigned so that later signed->unsigned
 *	conversion can't modify the value's bit pattern (e.g. -0 -> +0),
 *	and it must not be smaller than int because ~ does integral promotion.
 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
 *	The latter is a hack which happens to work on some machines but
 *	does *not* catch any random system, or things like integer types
 *	with NaN if that is possible.
 *
 * All of the types are explicitly cast to prevent accidental loss of
 * numeric range, and in the hope that they will be less likely to confuse
 * over-eager optimizers.
 *
 */

#define PERL_UCHAR_MIN ((unsigned char)0)

#ifdef UCHAR_MAX
#  define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
#else
#  ifdef MAXUCHAR
#    define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
#  else
#    define PERL_UCHAR_MAX       ((unsigned char)~(unsigned)0)
#  endif
#endif
 
/*
 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
 * depending on local options. Until Configure detects this (or at least
 * detects whether the "signed" keyword is available) the CHAR ranges
 * will not be included. UCHAR functions normally.
 *                                                           - kja
 */

#define PERL_USHORT_MIN ((unsigned short)0)

#ifdef USHORT_MAX
#  define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
#else
#  ifdef MAXUSHORT
#    define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
#  else
#    ifdef USHRT_MAX
#      define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
#    else
#      define PERL_USHORT_MAX       ((unsigned short)~(unsigned)0)
#    endif
#  endif
#endif

#ifdef SHORT_MAX
#  define PERL_SHORT_MAX ((short)SHORT_MAX)
#else
#  ifdef MAXSHORT    /* Often used in <values.h> */
#    define PERL_SHORT_MAX ((short)MAXSHORT)
#  else
#    ifdef SHRT_MAX
#      define PERL_SHORT_MAX ((short)SHRT_MAX)
#    else
#      define PERL_SHORT_MAX      ((short) (PERL_USHORT_MAX >> 1))
#    endif
#  endif
#endif

#ifdef SHORT_MIN
#  define PERL_SHORT_MIN ((short)SHORT_MIN)
#else
#  ifdef MINSHORT
#    define PERL_SHORT_MIN ((short)MINSHORT)
#  else
#    ifdef SHRT_MIN
#      define PERL_SHORT_MIN ((short)SHRT_MIN)
#    else
#      define PERL_SHORT_MIN        (-PERL_SHORT_MAX - ((3 & -1) == 3))
#    endif
#  endif
#endif

#ifdef UINT_MAX
#  define PERL_UINT_MAX ((unsigned int)UINT_MAX)
#else
#  ifdef MAXUINT
#    define PERL_UINT_MAX ((unsigned int)MAXUINT)
#  else
#    define PERL_UINT_MAX       (~(unsigned int)0)
#  endif
#endif

#define PERL_UINT_MIN ((unsigned int)0)

#ifdef INT_MAX
#  define PERL_INT_MAX ((int)INT_MAX)
#else
#  ifdef MAXINT    /* Often used in <values.h> */
#    define PERL_INT_MAX ((int)MAXINT)
#  else
#    define PERL_INT_MAX        ((int)(PERL_UINT_MAX >> 1))
#  endif
#endif

#ifdef INT_MIN
#  define PERL_INT_MIN ((int)INT_MIN)
#else
#  ifdef MININT
#    define PERL_INT_MIN ((int)MININT)
#  else
#    define PERL_INT_MIN        (-PERL_INT_MAX - ((3 & -1) == 3))
#  endif
#endif

#ifdef ULONG_MAX
#  define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
#else
#  ifdef MAXULONG
#    define PERL_ULONG_MAX ((unsigned long)MAXULONG)
#  else
#    define PERL_ULONG_MAX       (~(unsigned long)0)
#  endif
#endif

#define PERL_ULONG_MIN ((unsigned long)0L)

#ifdef LONG_MAX
#  define PERL_LONG_MAX ((long)LONG_MAX)
#else
#  ifdef MAXLONG    /* Often used in <values.h> */
#    define PERL_LONG_MAX ((long)MAXLONG)
#  else
#    define PERL_LONG_MAX        ((long) (PERL_ULONG_MAX >> 1))
#  endif
#endif

#ifdef LONG_MIN
#  define PERL_LONG_MIN ((long)LONG_MIN)
#else
#  ifdef MINLONG
#    define PERL_LONG_MIN ((long)MINLONG)
#  else
#    define PERL_LONG_MIN        (-PERL_LONG_MAX - ((3 & -1) == 3))
#  endif
#endif

#ifdef HAS_QUAD

#  ifdef UQUAD_MAX
#    define PERL_UQUAD_MAX ((UV)UQUAD_MAX)
#  else
#    define PERL_UQUAD_MAX	(~(UV)0)
#  endif

#  define PERL_UQUAD_MIN ((UV)0)

#  ifdef QUAD_MAX
#    define PERL_QUAD_MAX ((IV)QUAD_MAX)
#  else
#    define PERL_QUAD_MAX 	((IV) (PERL_UQUAD_MAX >> 1))
#  endif

#  ifdef QUAD_MIN
#    define PERL_QUAD_MIN ((IV)QUAD_MIN)
#  else
#    define PERL_QUAD_MIN 	(-PERL_QUAD_MAX - ((3 & -1) == 3))
#  endif

#endif

typedef MEM_SIZE STRLEN;

typedef struct op OP;
typedef struct cop COP;
typedef struct unop UNOP;
typedef struct binop BINOP;
typedef struct listop LISTOP;
typedef struct logop LOGOP;
typedef struct condop CONDOP;
typedef struct pmop PMOP;
typedef struct svop SVOP;
typedef struct gvop GVOP;
typedef struct pvop PVOP;
typedef struct loop LOOP;

typedef struct Outrec Outrec;
typedef struct interpreter PerlInterpreter;
#ifndef __BORLANDC__
typedef struct ff FF;		/* XXX not defined anywhere, should go? */
#endif
typedef struct sv SV;
typedef struct av AV;
typedef struct hv HV;
typedef struct cv CV;
typedef struct regexp REGEXP;
typedef struct gp GP;
typedef struct gv GV;
typedef struct io IO;
typedef struct context PERL_CONTEXT;
typedef struct block BLOCK;

typedef struct magic MAGIC;
typedef struct xrv XRV;
typedef struct xpv XPV;
typedef struct xpviv XPVIV;
typedef struct xpvuv XPVUV;
typedef struct xpvnv XPVNV;
typedef struct xpvmg XPVMG;
typedef struct xpvlv XPVLV;
typedef struct xpvav XPVAV;
typedef struct xpvhv XPVHV;
typedef struct xpvgv XPVGV;
typedef struct xpvcv XPVCV;
typedef struct xpvbm XPVBM;
typedef struct xpvfm XPVFM;
typedef struct xpvio XPVIO;
typedef struct mgvtbl MGVTBL;
typedef union any ANY;

#include "handy.h"

#ifdef PERL_OBJECT
typedef I32 (*filter_t) _((CPerlObj*, int, SV *, int));
#else
typedef I32 (*filter_t) _((int, SV *, int));
#endif

#define FILTER_READ(idx, sv, len)  filter_read(idx, sv, len)
#define FILTER_DATA(idx)	   (AvARRAY(PL_rsfp_filters)[idx])
#define FILTER_ISREADER(idx)	   (idx >= AvFILLp(PL_rsfp_filters))

#ifdef DOSISH
# if defined(OS2)
#   include "os2ish.h"
# else
#   include "dosish.h"
# endif
#else
# if defined(VMS)
#   include "vmsish.h"
# else
#   if defined(PLAN9)
#     include "./plan9/plan9ish.h"
#   else
#     if defined(MPE)
#       include "mpeix/mpeixish.h"
#     else
#       include "unixish.h"
#     endif
#   endif
# endif
#endif         

#ifndef FUNC_NAME_TO_PTR
#define FUNC_NAME_TO_PTR(name)		name
#endif

/* 
 * USE_THREADS needs to be after unixish.h as <pthread.h> includes
 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
 * this results in many functions being undeclared which bothers C++
 * May make sense to have threads after "*ish.h" anyway
 */

#ifdef USE_THREADS
   /* pending resolution of licensing issues, we avoid the erstwhile
    * atomic.h everywhere */
#  define EMULATE_ATOMIC_REFCOUNTS

#  ifdef FAKE_THREADS
#    include "fakethr.h"
#  else
#    ifdef WIN32
#      include <win32thread.h>
#    else
#      ifdef OS2
#        include "os2thread.h"
#      else
#        include <pthread.h>
typedef pthread_t perl_os_thread;
typedef pthread_mutex_t perl_mutex;
typedef pthread_cond_t perl_cond;
typedef pthread_key_t perl_key;
#      endif /* OS2 */
#    endif /* WIN32 */
#  endif /* FAKE_THREADS */
#endif /* USE_THREADS */


  
#ifdef VMS
#   define STATUS_NATIVE	PL_statusvalue_vms
#   define STATUS_NATIVE_EXPORT \
	((I32)PL_statusvalue_vms == -1 ? 44 : PL_statusvalue_vms)
#   define STATUS_NATIVE_SET(n)						\
	STMT_START {							\
	    PL_statusvalue_vms = (n);					\
	    if ((I32)PL_statusvalue_vms == -1)				\
		PL_statusvalue = -1;					\
	    else if (PL_statusvalue_vms & STS$M_SUCCESS)		\
		PL_statusvalue = 0;					\
	    else if ((PL_statusvalue_vms & STS$M_SEVERITY) == 0)	\
		PL_statusvalue = 1 << 8;				\
	    else							\
		PL_statusvalue = (PL_statusvalue_vms & STS$M_SEVERITY) << 8;	\
	} STMT_END
#   define STATUS_POSIX	PL_statusvalue
#   ifdef VMSISH_STATUS
#	define STATUS_CURRENT	(VMSISH_STATUS ? STATUS_NATIVE : STATUS_POSIX)
#   else
#	define STATUS_CURRENT	STATUS_POSIX
#   endif
#   define STATUS_POSIX_SET(n)				\
	STMT_START {					\
	    PL_statusvalue = (n);				\
	    if (PL_statusvalue != -1) {			\
		PL_statusvalue &= 0xFFFF;			\
		PL_statusvalue_vms = PL_statusvalue ? 44 : 1;	\
	    }						\
	    else PL_statusvalue_vms = -1;			\
	} STMT_END
#   define STATUS_ALL_SUCCESS	(PL_statusvalue = 0, PL_statusvalue_vms = 1)
#   define STATUS_ALL_FAILURE	(PL_statusvalue = 1, PL_statusvalue_vms = 44)
#else
#   define STATUS_NATIVE	STATUS_POSIX
#   define STATUS_NATIVE_EXPORT	STATUS_POSIX
#   define STATUS_NATIVE_SET	STATUS_POSIX_SET
#   define STATUS_POSIX		PL_statusvalue
#   define STATUS_POSIX_SET(n)		\
	STMT_START {			\
	    PL_statusvalue = (n);		\
	    if (PL_statusvalue != -1)	\
		PL_statusvalue &= 0xFFFF;	\
	} STMT_END
#   define STATUS_CURRENT STATUS_POSIX
#   define STATUS_ALL_SUCCESS	(PL_statusvalue = 0)
#   define STATUS_ALL_FAILURE	(PL_statusvalue = 1)
#endif

/* Some unistd.h's give a prototype for pause() even though
   HAS_PAUSE ends up undefined.  This causes the #define
   below to be rejected by the compmiler.  Sigh.
*/
#ifdef HAS_PAUSE
#define Pause	pause
#else
#define Pause() sleep((32767<<16)+32767)
#endif

#ifndef IOCPARM_LEN
#   ifdef IOCPARM_MASK
	/* on BSDish systes we're safe */
#	define IOCPARM_LEN(x)  (((x) >> 16) & IOCPARM_MASK)
#   else
	/* otherwise guess at what's safe */
#	define IOCPARM_LEN(x)	256
#   endif
#endif

#ifdef UNION_ANY_DEFINITION
UNION_ANY_DEFINITION;
#else
union any {
    void*	any_ptr;
    I32		any_i32;
    IV		any_iv;
    long	any_long;
    void	(CPERLscope(*any_dptr)) _((void*));
};
#endif

#ifdef USE_THREADS
#define ARGSproto struct perl_thread *thr
#else
#define ARGSproto void
#endif /* USE_THREADS */

/* Work around some cygwin32 problems with importing global symbols */
#if defined(CYGWIN32) && defined(DLLIMPORT) 
#   include "cw32imp.h"
#endif

#include "regexp.h"
#include "sv.h"
#include "util.h"
#include "form.h"
#include "gv.h"
#include "cv.h"
#include "opcode.h"
#include "op.h"
#include "cop.h"
#include "av.h"
#include "hv.h"
#include "mg.h"
#include "scope.h"
#include "bytecode.h"
#include "byterun.h"

/* Current curly descriptor */
typedef struct curcur CURCUR;
struct curcur {
    int		parenfloor;	/* how far back to strip paren data */
    int		cur;		/* how many instances of scan we've matched */
    int		min;		/* the minimal number of scans to match */
    int		max;		/* the maximal number of scans to match */
    int		minmod;		/* whether to work our way up or down */
    regnode *	scan;		/* the thing to match */
    regnode *	next;		/* what has to match after it */
    char *	lastloc;	/* where we started matching this scan */
    CURCUR *	oldcc;		/* current curly before we started this one */
};

typedef struct _sublex_info SUBLEXINFO;
struct _sublex_info {
    I32 super_state;	/* lexer state to save */
    I32 sub_inwhat;	/* "lex_inwhat" to use */
    OP *sub_op;		/* "lex_op" to use */
};

#ifdef PERL_OBJECT
struct magic_state {
    SV* mgs_sv;
    U32 mgs_flags;
};
typedef struct magic_state MGS;

typedef struct {
    I32 len_min;
    I32 len_delta;
    I32 pos_min;
    I32 pos_delta;
    SV *last_found;
    I32 last_end;			/* min value, <0 unless valid. */
    I32 last_start_min;
    I32 last_start_max;
    SV **longest;			/* Either &l_fixed, or &l_float. */
    SV *longest_fixed;
    I32 offset_fixed;
    SV *longest_float;
    I32 offset_float_min;
    I32 offset_float_max;
    I32 flags;
} scan_data_t;

typedef I32 CHECKPOINT;
#endif /* PERL_OBJECT */

/* work around some libPW problems */
#ifdef DOINIT
EXT char Error[1];
#endif

#if defined(iAPX286) || defined(M_I286) || defined(I80286)
#   define I286
#endif

#if defined(htonl) && !defined(HAS_HTONL)
#define HAS_HTONL
#endif
#if defined(htons) && !defined(HAS_HTONS)
#define HAS_HTONS
#endif
#if defined(ntohl) && !defined(HAS_NTOHL)
#define HAS_NTOHL
#endif
#if defined(ntohs) && !defined(HAS_NTOHS)
#define HAS_NTOHS
#endif
#ifndef HAS_HTONL
#if (BYTEORDER & 0xffff) != 0x4321
#define HAS_HTONS
#define HAS_HTONL
#define HAS_NTOHS
#define HAS_NTOHL
#define MYSWAP
#define htons my_swap
#define htonl my_htonl
#define ntohs my_swap
#define ntohl my_ntohl
#endif
#else
#if (BYTEORDER & 0xffff) == 0x4321
#undef HAS_HTONS
#undef HAS_HTONL
#undef HAS_NTOHS
#undef HAS_NTOHL
#endif
#endif

/*
 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
 * -DWS
 */
#if BYTEORDER != 0x1234
# define HAS_VTOHL
# define HAS_VTOHS
# define HAS_HTOVL
# define HAS_HTOVS
# if BYTEORDER == 0x4321
#  define vtohl(x)	((((x)&0xFF)<<24)	\
			+(((x)>>24)&0xFF)	\
			+(((x)&0x0000FF00)<<8)	\
			+(((x)&0x00FF0000)>>8)	)
#  define vtohs(x)	((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
#  define htovl(x)	vtohl(x)
#  define htovs(x)	vtohs(x)
# endif
	/* otherwise default to functions in util.c */
#endif

#ifdef CASTNEGFLOAT
#define U_S(what) ((U16)(what))
#define U_I(what) ((unsigned int)(what))
#define U_L(what) ((U32)(what))
#else
EXTERN_C U32 cast_ulong _((double));
#define U_S(what) ((U16)cast_ulong((double)(what)))
#define U_I(what) ((unsigned int)cast_ulong((double)(what)))
#define U_L(what) (cast_ulong((double)(what)))
#endif

#ifdef CASTI32
#define I_32(what) ((I32)(what))
#define I_V(what) ((IV)(what))
#define U_V(what) ((UV)(what))
#else
START_EXTERN_C
I32 cast_i32 _((double));
IV cast_iv _((double));
UV cast_uv _((double));
END_EXTERN_C
#define I_32(what) (cast_i32((double)(what)))
#define I_V(what) (cast_iv((double)(what)))
#define U_V(what) (cast_uv((double)(what)))
#endif

struct Outrec {
    I32		o_lines;
    char	*o_str;
    U32		o_len;
};

#ifndef MAXSYSFD
#   define MAXSYSFD 2
#endif

#ifndef TMPPATH
#  define TMPPATH "/tmp/perl-eXXXXXX"
#endif

#ifndef __cplusplus
Uid_t getuid _((void));
Uid_t geteuid _((void));
Gid_t getgid _((void));
Gid_t getegid _((void));
#endif

#ifdef DEBUGGING
#ifndef Perl_debug_log
#define Perl_debug_log	PerlIO_stderr()
#endif
#undef  YYDEBUG
#define YYDEBUG 1
#define DEB(a)     			a
#define DEBUG(a)   if (PL_debug)		a
#define DEBUG_p(a) if (PL_debug & 1)	a
#define DEBUG_s(a) if (PL_debug & 2)	a
#define DEBUG_l(a) if (PL_debug & 4)	a
#define DEBUG_t(a) if (PL_debug & 8)	a
#define DEBUG_o(a) if (PL_debug & 16)	a
#define DEBUG_c(a) if (PL_debug & 32)	a
#define DEBUG_P(a) if (PL_debug & 64)	a
#define DEBUG_m(a) if (PL_curinterp && PL_debug & 128)	a
#define DEBUG_f(a) if (PL_debug & 256)	a
#define DEBUG_r(a) if (PL_debug & 512)	a
#define DEBUG_x(a) if (PL_debug & 1024)	a
#define DEBUG_u(a) if (PL_debug & 2048)	a
#define DEBUG_L(a) if (PL_debug & 4096)	a
#define DEBUG_H(a) if (PL_debug & 8192)	a
#define DEBUG_X(a) if (PL_debug & 16384)	a
#define DEBUG_D(a) if (PL_debug & 32768)	a
#  ifdef USE_THREADS
#    define DEBUG_S(a) if (PL_debug & (1<<16))	a
#  else
#    define DEBUG_S(a)
#  endif
#else
#define DEB(a)
#define DEBUG(a)
#define DEBUG_p(a)
#define DEBUG_s(a)
#define DEBUG_l(a)
#define DEBUG_t(a)
#define DEBUG_o(a)
#define DEBUG_c(a)
#define DEBUG_P(a)
#define DEBUG_m(a)
#define DEBUG_f(a)
#define DEBUG_r(a)
#define DEBUG_x(a)
#define DEBUG_u(a)
#define DEBUG_S(a)
#define DEBUG_H(a)
#define DEBUG_X(a)
#define DEBUG_D(a)
#define DEBUG_S(a)
#endif
#define YYMAXDEPTH 300

#ifndef assert  /* <assert.h> might have been included somehow */
#define assert(what)	DEB( {						\
	if (!(what)) {							\
	    croak("Assertion failed: file \"%s\", line %d",		\
		__FILE__, __LINE__);					\
	    PerlProc_exit(1);							\
	}})
#endif

struct ufuncs {
    I32 (*uf_val)_((IV, SV*));
    I32 (*uf_set)_((IV, SV*));
    IV uf_index;
};

/* Fix these up for __STDC__ */
#ifndef DONT_DECLARE_STD
char *mktemp _((char*));
double atof _((const char*));
#endif

#ifndef STANDARD_C
/* All of these are in stdlib.h or time.h for ANSI C */
Time_t time();
struct tm *gmtime(), *localtime();
#ifdef OEMVS
char *(strchr)(), *(strrchr)();
char *(strcpy)(), *(strcat)();
#else
char *strchr(), *strrchr();
char *strcpy(), *strcat();
#endif
#endif /* ! STANDARD_C */


#ifdef I_MATH
#    include <math.h>
#else
START_EXTERN_C
	    double exp _((double));
	    double log _((double));
	    double log10 _((double));
	    double sqrt _((double));
	    double frexp _((double,int*));
	    double ldexp _((double,int));
	    double modf _((double,double*));
	    double sin _((double));
	    double cos _((double));
	    double atan2 _((double,double));
	    double pow _((double,double));
END_EXTERN_C
#endif

#ifndef __cplusplus
#  ifdef __NeXT__ /* or whatever catches all NeXTs */
char *crypt ();       /* Maybe more hosts will need the unprototyped version */
#  else
#    if !defined(WIN32) || !defined(HAVE_DES_FCRYPT)
char *crypt _((const char*, const char*));
#    endif /* !WIN32 && !HAVE_CRYPT_SOURCE */
#  endif /* !__NeXT__ */
#  ifndef DONT_DECLARE_STD
#    ifndef getenv
char *getenv _((const char*));
#    endif /* !getenv */
Off_t lseek _((int,Off_t,int));
#  endif /* !DONT_DECLARE_STD */
char *getlogin _((void));
#endif /* !__cplusplus */

#ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
#define UNLINK unlnk
I32 unlnk _((char*));
#else
#define UNLINK unlink
#endif

#ifndef HAS_SETREUID
#  ifdef HAS_SETRESUID
#    define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
#    define HAS_SETREUID
#  endif
#endif
#ifndef HAS_SETREGID
#  ifdef HAS_SETRESGID
#    define setregid(r,e) setresgid(r,e,(Gid_t)-1)
#    define HAS_SETREGID
#  endif
#endif

typedef Signal_t (*Sighandler_t) _((int));

#ifdef HAS_SIGACTION
typedef struct sigaction Sigsave_t;
#else
typedef Sighandler_t Sigsave_t;
#endif

#define SCAN_DEF 0
#define SCAN_TR 1
#define SCAN_REPL 2

#ifdef DEBUGGING
# ifndef register
#  define register
# endif
# define PAD_SV(po) pad_sv(po)
# define RUNOPS_DEFAULT runops_debug
#else
# define PAD_SV(po) PL_curpad[po]
# define RUNOPS_DEFAULT runops_standard
#endif

#ifdef MYMALLOC
#  define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
#  define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
#else
#  define MALLOC_INIT
#  define MALLOC_TERM
#endif


/*
 * These need prototyping here because <proto.h> isn't
 * included until after runops is initialised.
 */

#ifndef PERL_OBJECT
typedef int runops_proc_t _((void));
int runops_standard _((void));
#ifdef DEBUGGING
int runops_debug _((void));
#endif
#endif  /* PERL_OBJECT */

/* _ (for $_) must be first in the following list (DEFSV requires it) */
#define THREADSV_NAMES "_123456789&`'+/.,\\\";^-%=|~:\001\005!@"

/* VMS doesn't use environ array and NeXT has problems with crt0.o globals */
#if !defined(VMS) && !(defined(NeXT) && defined(__DYNAMIC__))
#if !defined(DONT_DECLARE_STD) \
	|| (defined(__svr4__) && defined(__GNUC__) && defined(sun)) \
	|| defined(__sgi) || defined(__DGUX)
extern char **	environ;	/* environment variables supplied via exec */
#endif
#else
#  if defined(NeXT) && defined(__DYNAMIC__)

#  include <mach-o/dyld.h>
EXT char *** environ_pointer;
#  define environ (*environ_pointer)
#  endif
#endif /* environ processing */


/* for tmp use in stupid debuggers */
EXT int *	di;
EXT short *	ds;
EXT char *	dc;

/* handy constants */
EXTCONST char warn_uninit[]
  INIT("Use of uninitialized value");
EXTCONST char warn_nosemi[]
  INIT("Semicolon seems to be missing");
EXTCONST char warn_reserved[]
  INIT("Unquoted string \"%s\" may clash with future reserved word");
EXTCONST char warn_nl[]
  INIT("Unsuccessful %s on filename containing newline");
EXTCONST char no_wrongref[]
  INIT("Can't use %s ref as %s ref");
EXTCONST char no_symref[]
  INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
EXTCONST char no_usym[]
  INIT("Can't use an undefined value as %s reference");
EXTCONST char no_aelem[]
  INIT("Modification of non-creatable array value attempted, subscript %d");
EXTCONST char no_helem[]
  INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
EXTCONST char no_modify[]
  INIT("Modification of a read-only value attempted");
EXTCONST char no_mem[]
  INIT("Out of memory!\n");
EXTCONST char no_security[]
  INIT("Insecure dependency in %s%s");
EXTCONST char no_sock_func[]
  INIT("Unsupported socket function \"%s\" called");
EXTCONST char no_dir_func[]
  INIT("Unsupported directory function \"%s\" called");
EXTCONST char no_func[]
  INIT("The %s function is unimplemented");
EXTCONST char no_myglob[]
  INIT("\"my\" variable %s can't be in a package");

#ifdef DOINIT
EXT char *sig_name[] = { SIG_NAME };
EXT int   sig_num[]  = { SIG_NUM };
EXT SV	* psig_ptr[sizeof(sig_num)/sizeof(*sig_num)];
EXT SV  * psig_name[sizeof(sig_num)/sizeof(*sig_num)];
#else
EXT char *sig_name[];
EXT int   sig_num[];
EXT SV  * psig_ptr[];
EXT SV  * psig_name[];
#endif

/* fast case folding tables */

#ifdef DOINIT
#ifdef EBCDIC
EXT unsigned char fold[] = { /* fast EBCDIC case folding table */
    0,      1,      2,      3,      4,      5,      6,      7,
    8,      9,      10,     11,     12,     13,     14,     15,
    16,     17,     18,     19,     20,     21,     22,     23,
    24,     25,     26,     27,     28,     29,     30,     31,
    32,     33,     34,     35,     36,     37,     38,     39,
    40,     41,     42,     43,     44,     45,     46,     47,
    48,     49,     50,     51,     52,     53,     54,     55,
    56,     57,     58,     59,     60,     61,     62,     63,
    64,     65,     66,     67,     68,     69,     70,     71,
    72,     73,     74,     75,     76,     77,     78,     79,
    80,     81,     82,     83,     84,     85,     86,     87,
    88,     89,     90,     91,     92,     93,     94,     95,
    96,     97,     98,     99,     100,    101,    102,    103,
    104,    105,    106,    107,    108,    109,    110,    111,
    112,    113,    114,    115,    116,    117,    118,    119,
    120,    121,    122,    123,    124,    125,    126,    127,
    128,    'A',    'B',    'C',    'D',    'E',    'F',    'G',
    'H',    'I',    138,    139,    140,    141,    142,    143,
    144,    'J',    'K',    'L',    'M',    'N',    'O',    'P',
    'Q',    'R',    154,    155,    156,    157,    158,    159,
    160,    161,    'S',    'T',    'U',    'V',    'W',    'X',
    'Y',    'Z',    170,    171,    172,    173,    174,    175,
    176,    177,    178,    179,    180,    181,    182,    183,
    184,    185,    186,    187,    188,    189,    190,    191,
    192,    'a',    'b',    'c',    'd',    'e',    'f',    'g',
    'h',    'i',    202,    203,    204,    205,    206,    207,
    208,    'j',    'k',    'l',    'm',    'n',    'o',    'p',
    'q',    'r',    218,    219,    220,    221,    222,    223,
    224,    225,    's',    't',    'u',    'v',    'w',    'x',
    'y',    'z',    234,    235,    236,    237,    238,    239,
    240,    241,    242,    243,    244,    245,    246,    247,
    248,    249,    250,    251,    252,    253,    254,    255
};
#else   /* ascii rather than ebcdic */
EXTCONST  unsigned char fold[] = {
	0,	1,	2,	3,	4,	5,	6,	7,
	8,	9,	10,	11,	12,	13,	14,	15,
	16,	17,	18,	19,	20,	21,	22,	23,
	24,	25,	26,	27,	28,	29,	30,	31,
	32,	33,	34,	35,	36,	37,	38,	39,
	40,	41,	42,	43,	44,	45,	46,	47,
	48,	49,	50,	51,	52,	53,	54,	55,
	56,	57,	58,	59,	60,	61,	62,	63,
	64,	'a',	'b',	'c',	'd',	'e',	'f',	'g',
	'h',	'i',	'j',	'k',	'l',	'm',	'n',	'o',
	'p',	'q',	'r',	's',	't',	'u',	'v',	'w',
	'x',	'y',	'z',	91,	92,	93,	94,	95,
	96,	'A',	'B',	'C',	'D',	'E',	'F',	'G',
	'H',	'I',	'J',	'K',	'L',	'M',	'N',	'O',
	'P',	'Q',	'R',	'S',	'T',	'U',	'V',	'W',
	'X',	'Y',	'Z',	123,	124,	125,	126,	127,
	128,	129,	130,	131,	132,	133,	134,	135,
	136,	137,	138,	139,	140,	141,	142,	143,
	144,	145,	146,	147,	148,	149,	150,	151,
	152,	153,	154,	155,	156,	157,	158,	159,
	160,	161,	162,	163,	164,	165,	166,	167,
	168,	169,	170,	171,	172,	173,	174,	175,
	176,	177,	178,	179,	180,	181,	182,	183,
	184,	185,	186,	187,	188,	189,	190,	191,
	192,	193,	194,	195,	196,	197,	198,	199,
	200,	201,	202,	203,	204,	205,	206,	207,
	208,	209,	210,	211,	212,	213,	214,	215,
	216,	217,	218,	219,	220,	221,	222,	223,	
	224,	225,	226,	227,	228,	229,	230,	231,
	232,	233,	234,	235,	236,	237,	238,	239,
	240,	241,	242,	243,	244,	245,	246,	247,
	248,	249,	250,	251,	252,	253,	254,	255
};
#endif  /* !EBCDIC */
#else
EXTCONST unsigned char fold[];
#endif

#ifdef DOINIT
EXT unsigned char fold_locale[] = {
	0,	1,	2,	3,	4,	5,	6,	7,
	8,	9,	10,	11,	12,	13,	14,	15,
	16,	17,	18,	19,	20,	21,	22,	23,
	24,	25,	26,	27,	28,	29,	30,	31,
	32,	33,	34,	35,	36,	37,	38,	39,
	40,	41,	42,	43,	44,	45,	46,	47,
	48,	49,	50,	51,	52,	53,	54,	55,
	56,	57,	58,	59,	60,	61,	62,	63,
	64,	'a',	'b',	'c',	'd',	'e',	'f',	'g',
	'h',	'i',	'j',	'k',	'l',	'm',	'n',	'o',
	'p',	'q',	'r',	's',	't',	'u',	'v',	'w',
	'x',	'y',	'z',	91,	92,	93,	94,	95,
	96,	'A',	'B',	'C',	'D',	'E',	'F',	'G',
	'H',	'I',	'J',	'K',	'L',	'M',	'N',	'O',
	'P',	'Q',	'R',	'S',	'T',	'U',	'V',	'W',
	'X',	'Y',	'Z',	123,	124,	125,	126,	127,
	128,	129,	130,	131,	132,	133,	134,	135,
	136,	137,	138,	139,	140,	141,	142,	143,
	144,	145,	146,	147,	148,	149,	150,	151,
	152,	153,	154,	155,	156,	157,	158,	159,
	160,	161,	162,	163,	164,	165,	166,	167,
	168,	169,	170,	171,	172,	173,	174,	175,
	176,	177,	178,	179,	180,	181,	182,	183,
	184,	185,	186,	187,	188,	189,	190,	191,
	192,	193,	194,	195,	196,	197,	198,	199,
	200,	201,	202,	203,	204,	205,	206,	207,
	208,	209,	210,	211,	212,	213,	214,	215,
	216,	217,	218,	219,	220,	221,	222,	223,	
	224,	225,	226,	227,	228,	229,	230,	231,
	232,	233,	234,	235,	236,	237,	238,	239,
	240,	241,	242,	243,	244,	245,	246,	247,
	248,	249,	250,	251,	252,	253,	254,	255
};
#else
EXT unsigned char fold_locale[];
#endif

#ifdef DOINIT
#ifdef EBCDIC
EXT unsigned char freq[] = {/* EBCDIC frequencies for mixed English/C */
    1,      2,      84,     151,    154,    155,    156,    157,
    165,    246,    250,    3,      158,    7,      18,     29,
    40,     51,     62,     73,     85,     96,     107,    118,
    129,    140,    147,    148,    149,    150,    152,    153,
    255,      6,      8,      9,     10,     11,     12,     13,
     14,     15,     24,     25,     26,     27,     28,    226,
     29,     30,     31,     32,     33,     43,     44,     45,
     46,     47,     48,     49,     50,     76,     77,     78,
     79,     80,     81,     82,     83,     84,     85,     86,
     87,     94,     95,    234,    181,    233,    187,    190,
    180,     96,     97,     98,     99,    100,    101,    102,
    104,    112,    182,    174,    236,    232,    229,    103,
    228,    226,    114,    115,    116,    117,    118,    119,
    120,    121,    122,    235,    176,    230,    194,    162,
    130,    131,    132,    133,    134,    135,    136,    137,
    138,    139,    201,    205,    163,    217,    220,    224,
    5,      248,    227,    244,    242,    255,    241,    231,
    240,    253,    16,     197,    19,     20,     21,     187,
    23,     169,    210,    245,    237,    249,    247,    239,
    168,    252,    34,     196,    36,     37,     38,     39,
    41,     42,     251,    254,    238,    223,    221,    213,
    225,    177,    52,     53,     54,     55,     56,     57,
    58,     59,     60,     61,     63,     64,     65,     66,
    67,     68,     69,     70,     71,     72,     74,     75,
    205,    208,    186,    202,    200,    218,    198,    179,
    178,    214,    88,     89,     90,     91,     92,     93,
    217,    166,    170,    207,    199,    209,    206,    204,
    160,    212,    105,    106,    108,    109,    110,    111,
    203,    113,    216,    215,    192,    175,    193,    243,
    172,    161,    123,    124,    125,    126,    127,    128,
    222,    219,    211,    195,    188,    193,    185,    184,
    191,    183,    141,    142,    143,    144,    145,    146
};
#else  /* ascii rather than ebcdic */
EXTCONST unsigned char freq[] = {	/* letter frequencies for mixed English/C */
	1,	2,	84,	151,	154,	155,	156,	157,
	165,	246,	250,	3,	158,	7,	18,	29,
	40,	51,	62,	73,	85,	96,	107,	118,
	129,	140,	147,	148,	149,	150,	152,	153,
	255,	182,	224,	205,	174,	176,	180,	217,
	233,	232,	236,	187,	235,	228,	234,	226,
	222,	219,	211,	195,	188,	193,	185,	184,
	191,	183,	201,	229,	181,	220,	194,	162,
	163,	208,	186,	202,	200,	218,	198,	179,
	178,	214,	166,	170,	207,	199,	209,	206,
	204,	160,	212,	216,	215,	192,	175,	173,
	243,	172,	161,	190,	203,	189,	164,	230,
	167,	248,	227,	244,	242,	255,	241,	231,
	240,	253,	169,	210,	245,	237,	249,	247,
	239,	168,	252,	251,	254,	238,	223,	221,
	213,	225,	177,	197,	171,	196,	159,	4,
	5,	6,	8,	9,	10,	11,	12,	13,
	14,	15,	16,	17,	19,	20,	21,	22,
	23,	24,	25,	26,	27,	28,	30,	31,
	32,	33,	34,	35,	36,	37,	38,	39,
	41,	42,	43,	44,	45,	46,	47,	48,
	49,	50,	52,	53,	54,	55,	56,	57,
	58,	59,	60,	61,	63,	64,	65,	66,
	67,	68,	69,	70,	71,	72,	74,	75,
	76,	77,	78,	79,	80,	81,	82,	83,
	86,	87,	88,	89,	90,	91,	92,	93,
	94,	95,	97,	98,	99,	100,	101,	102,
	103,	104,	105,	106,	108,	109,	110,	111,
	112,	113,	114,	115,	116,	117,	119,	120,
	121,	122,	123,	124,	125,	126,	127,	128,
	130,	131,	132,	133,	134,	135,	136,	137,
	138,	139,	141,	142,	143,	144,	145,	146
};
#endif
#else
EXTCONST unsigned char freq[];
#endif

#ifdef DEBUGGING
#ifdef DOINIT
EXTCONST char* block_type[] = {
	"NULL",
	"SUB",
	"EVAL",
	"LOOP",
	"SUBST",
	"BLOCK",
};
#else
EXTCONST char* block_type[];
#endif
#endif

/*****************************************************************************/
/* This lexer/parser stuff is currently global since yacc is hard to reenter */
/*****************************************************************************/
/* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */

#include "perly.h"

#define LEX_NOTPARSING		11	/* borrowed from toke.c */

typedef enum {
    XOPERATOR,
    XTERM,
    XREF,
    XSTATE,
    XBLOCK,
    XTERMBLOCK
} expectation;


				/* Note: the lowest 8 bits are reserved for
				   stuffing into op->op_private */
#define HINT_INTEGER		0x00000001
#define HINT_STRICT_REFS	0x00000002

#define HINT_BLOCK_SCOPE	0x00000100
#define HINT_STRICT_SUBS	0x00000200
#define HINT_STRICT_VARS	0x00000400
#define HINT_LOCALE		0x00000800

#define HINT_NEW_INTEGER	0x00001000
#define HINT_NEW_FLOAT		0x00002000
#define HINT_NEW_BINARY		0x00004000
#define HINT_NEW_STRING		0x00008000
#define HINT_NEW_RE		0x00010000
#define HINT_LOCALIZE_HH	0x00020000 /* %^H needs to be copied */

#define HINT_RE_TAINT		0x00100000
#define HINT_RE_EVAL		0x00200000

/* Various states of an input record separator SV (rs, nrs) */
#define RsSNARF(sv)   (! SvOK(sv))
#define RsSIMPLE(sv)  (SvOK(sv) && SvCUR(sv))
#define RsPARA(sv)    (SvOK(sv) && ! SvCUR(sv))
#define RsRECORD(sv)  (SvROK(sv) && (SvIV(SvRV(sv)) > 0))

/* Enable variables which are pointers to functions */
#ifdef PERL_OBJECT
typedef regexp*(CPerlObj::*regcomp_t) _((char* exp, char* xend, PMOP* pm));
typedef I32 (CPerlObj::*regexec_t) _((regexp* prog, char* stringarg,
				      char* strend, char* strbeg,
				      I32 minend, SV* screamer, void* data,
				      U32 flags));
#else
typedef regexp*(*regcomp_t) _((char* exp, char* xend, PMOP* pm));
typedef I32 (*regexec_t) _((regexp* prog, char* stringarg, char* strend, char*
			    strbeg, I32 minend, SV* screamer, void* data, 
			    U32 flags));

#endif

/* Set up PERLVAR macros for populating structs */
#define PERLVAR(var,type) type var;
#define PERLVARI(var,type,init) type var;
#define PERLVARIC(var,type,init) type var;

/* Interpreter exitlist entry */
typedef struct exitlistentry {
#ifdef PERL_OBJECT
    void (*fn) _((CPerlObj*, void*));
#else
    void (*fn) _((void*));
#endif
    void *ptr;
} PerlExitListEntry;

#ifdef PERL_OBJECT
extern "C" CPerlObj* perl_alloc _((IPerlMem*, IPerlEnv*, IPerlStdIO*, IPerlLIO*, IPerlDir*, IPerlSock*, IPerlProc*));

typedef int (CPerlObj::*runops_proc_t) _((void));
#undef EXT
#define EXT
#undef EXTCONST
#define EXTCONST
#undef INIT
#define INIT(x)

class CPerlObj {
public:
	CPerlObj(IPerlMem*, IPerlEnv*, IPerlStdIO*, IPerlLIO*, IPerlDir*, IPerlSock*, IPerlProc*);
	void Init(void);
	void* operator new(size_t nSize, IPerlMem *pvtbl);
#endif /* PERL_OBJECT */

#ifdef PERL_GLOBAL_STRUCT
struct perl_vars {
#include "perlvars.h"
};

#ifdef PERL_CORE
EXT struct perl_vars PL_Vars;
EXT struct perl_vars *PL_VarsPtr INIT(&PL_Vars);
#else /* PERL_CORE */
#if !defined(__GNUC__) || !defined(WIN32)
EXT
#endif /* WIN32 */
struct perl_vars *PL_VarsPtr;
#define PL_Vars (*((PL_VarsPtr) ? PL_VarsPtr : (PL_VarsPtr =  Perl_GetVars())))
#endif /* PERL_CORE */
#endif /* PERL_GLOBAL_STRUCT */

#ifdef MULTIPLICITY
/* If we have multiple interpreters define a struct 
   holding variables which must be per-interpreter
   If we don't have threads anything that would have 
   be per-thread is per-interpreter.
*/

struct interpreter {
#ifndef USE_THREADS
#include "thrdvar.h"
#endif
#include "intrpvar.h"
};

#else
struct interpreter {
    char broiled;
};
#endif

#ifdef USE_THREADS
/* If we have threads define a struct with all the variables
 * that have to be per-thread
 */


struct perl_thread {
#include "thrdvar.h"
};

typedef struct perl_thread *Thread;

#else
typedef void *Thread;
#endif

/* Done with PERLVAR macros for now ... */
#undef PERLVAR
#undef PERLVARI
#undef PERLVARIC

#include "thread.h"
#include "pp.h"
#include "proto.h"

#ifdef EMBED
#define Perl_sv_setptrobj(rv,ptr,name) Perl_sv_setref_iv(rv,name,(IV)ptr)
#define Perl_sv_setptrref(rv,ptr) Perl_sv_setref_iv(rv,Nullch,(IV)ptr)
#else
#define sv_setptrobj(rv,ptr,name) sv_setref_iv(rv,name,(IV)ptr)
#define sv_setptrref(rv,ptr) sv_setref_iv(rv,Nullch,(IV)ptr)
#endif

/* The following must follow proto.h as #defines mess up syntax */

#include "embedvar.h"

/* Now include all the 'global' variables 
 * If we don't have threads or multiple interpreters
 * these include variables that would have been their struct-s 
 */
                         
#define PERLVAR(var,type) EXT type PL_##var;
#define PERLVARI(var,type,init) EXT type  PL_##var INIT(init);
#define PERLVARIC(var,type,init) EXTCONST type PL_##var INIT(init);

#ifndef PERL_GLOBAL_STRUCT
#include "perlvars.h"
#endif

#ifndef MULTIPLICITY

#  include "intrpvar.h"
#  ifndef USE_THREADS
#    include "thrdvar.h"
#  endif

#endif

#ifdef PERL_OBJECT
/*
 * The following is a buffer where new variables must
 * be defined to maintain binary compatibility with PERL_OBJECT
 * for 5.005
 */
PERLVAR(object_compatibility[30],	char)
};

#include "objpp.h"
#ifdef DOINIT
#include "INTERN.h"
#else
#include "EXTERN.h"
#endif
#endif  /* PERL_OBJECT */


#undef PERLVAR
#undef PERLVARI
#undef PERLVARIC

#if defined(HASATTRIBUTE) && defined(WIN32)
/*
 * This provides a layer of functions and macros to ensure extensions will
 * get to use the same RTL functions as the core.
 * It has to go here or #define of printf messes up __attribute__
 * stuff in proto.h  
 */
#ifndef PERL_OBJECT
#  include <win32iop.h>
#endif  /* PERL_OBJECT */
#endif	/* WIN32 */

#ifdef DOINIT

EXT MGVTBL vtbl_sv =	{magic_get,
				magic_set,
					magic_len,
						0,	0};
EXT MGVTBL vtbl_env =	{0,	magic_set_all_env,
				0,	magic_clear_all_env,
							0};
EXT MGVTBL vtbl_envelem =	{0,	magic_setenv,
					0,	magic_clearenv,
							0};
EXT MGVTBL vtbl_sig =	{0,	0,		 0, 0, 0};
EXT MGVTBL vtbl_sigelem =	{magic_getsig,
					magic_setsig,
					0,	magic_clearsig,
							0};
EXT MGVTBL vtbl_pack =	{0,	0,	magic_sizepack,	magic_wipepack,
							0};
EXT MGVTBL vtbl_packelem =	{magic_getpack,
				magic_setpack,
					0,	magic_clearpack,
							0};
EXT MGVTBL vtbl_dbline =	{0,	magic_setdbline,
					0,	0,	0};
EXT MGVTBL vtbl_isa =	{0,	magic_setisa,
					0,	magic_setisa,
							0};
EXT MGVTBL vtbl_isaelem =	{0,	magic_setisa,
					0,	0,	0};
EXT MGVTBL vtbl_arylen =	{magic_getarylen,
				magic_setarylen,
					0,	0,	0};
EXT MGVTBL vtbl_glob =	{magic_getglob,
				magic_setglob,
					0,	0,	0};
EXT MGVTBL vtbl_mglob =	{0,	magic_setmglob,
					0,	0,	0};
EXT MGVTBL vtbl_nkeys =	{magic_getnkeys,
				magic_setnkeys,
					0,	0,	0};
EXT MGVTBL vtbl_taint =	{magic_gettaint,magic_settaint,
					0,	0,	0};
EXT MGVTBL vtbl_substr =	{magic_getsubstr, magic_setsubstr,
					0,	0,	0};
EXT MGVTBL vtbl_vec =	{magic_getvec,
				magic_setvec,
					0,	0,	0};
EXT MGVTBL vtbl_pos =	{magic_getpos,
				magic_setpos,
					0,	0,	0};
EXT MGVTBL vtbl_bm =	{0,	magic_setbm,
					0,	0,	0};
EXT MGVTBL vtbl_fm =	{0,	magic_setfm,
					0,	0,	0};
EXT MGVTBL vtbl_uvar =	{magic_getuvar,
				magic_setuvar,
					0,	0,	0};
#ifdef USE_THREADS
EXT MGVTBL vtbl_mutex =	{0,	0,	0,	0,	magic_mutexfree};
#endif /* USE_THREADS */
EXT MGVTBL vtbl_defelem = {magic_getdefelem,magic_setdefelem,
					0,	0,	0};

EXT MGVTBL vtbl_regexp = {0,0,0,0, magic_freeregexp};

#ifdef USE_LOCALE_COLLATE
EXT MGVTBL vtbl_collxfrm = {0,
				magic_setcollxfrm,
					0,	0,	0};
#endif

#ifdef OVERLOAD
EXT MGVTBL vtbl_amagic =       {0,     magic_setamagic,
                                        0,      0,      magic_setamagic};
EXT MGVTBL vtbl_amagicelem =   {0,     magic_setamagic,
                                        0,      0,      magic_setamagic};
#endif /* OVERLOAD */

#else /* !DOINIT */

EXT MGVTBL vtbl_sv;
EXT MGVTBL vtbl_env;
EXT MGVTBL vtbl_envelem;
EXT MGVTBL vtbl_sig;
EXT MGVTBL vtbl_sigelem;
EXT MGVTBL vtbl_pack;
EXT MGVTBL vtbl_packelem;
EXT MGVTBL vtbl_dbline;
EXT MGVTBL vtbl_isa;
EXT MGVTBL vtbl_isaelem;
EXT MGVTBL vtbl_arylen;
EXT MGVTBL vtbl_glob;
EXT MGVTBL vtbl_mglob;
EXT MGVTBL vtbl_nkeys;
EXT MGVTBL vtbl_taint;
EXT MGVTBL vtbl_substr;
EXT MGVTBL vtbl_vec;
EXT MGVTBL vtbl_pos;
EXT MGVTBL vtbl_bm;
EXT MGVTBL vtbl_fm;
EXT MGVTBL vtbl_uvar;

#ifdef USE_THREADS
EXT MGVTBL vtbl_mutex;
#endif /* USE_THREADS */

EXT MGVTBL vtbl_defelem;
EXT MGVTBL vtbl_regexp;

#ifdef USE_LOCALE_COLLATE
EXT MGVTBL vtbl_collxfrm;
#endif

#ifdef OVERLOAD
EXT MGVTBL vtbl_amagic;
EXT MGVTBL vtbl_amagicelem;
#endif /* OVERLOAD */

#endif /* !DOINIT */

#ifdef OVERLOAD

#define NofAMmeth 58
#ifdef DOINIT
EXTCONST char * AMG_names[NofAMmeth] = {
  "fallback",	"abs",			/* "fallback" should be the first. */
  "bool",	"nomethod",
  "\"\"",	"0+",
  "+",		"+=",
  "-",		"-=",
  "*",		"*=",
  "/",		"/=",
  "%",		"%=",
  "**",		"**=",
  "<<",		"<<=",
  ">>",		">>=",
  "&",		"&=",
  "|",		"|=",
  "^",		"^=",
  "<",		"<=",
  ">",		">=",
  "==",		"!=",
  "<=>",	"cmp",
  "lt",		"le",
  "gt",		"ge",
  "eq",		"ne",
  "!",		"~",
  "++",		"--",
  "atan2",	"cos",
  "sin",	"exp",
  "log",	"sqrt",
  "x",		"x=",
  ".",		".=",
  "=",		"neg"
};
#else
EXTCONST char * AMG_names[NofAMmeth];
#endif /* def INITAMAGIC */

struct am_table {
  long was_ok_sub;
  long was_ok_am;
  U32 flags;
  CV* table[NofAMmeth];
  long fallback;
};
struct am_table_short {
  long was_ok_sub;
  long was_ok_am;
  U32 flags;
};
typedef struct am_table AMT;
typedef struct am_table_short AMTS;

#define AMGfallNEVER	1
#define AMGfallNO	2
#define AMGfallYES	3

#define AMTf_AMAGIC		1
#define AMT_AMAGIC(amt)		((amt)->flags & AMTf_AMAGIC)
#define AMT_AMAGIC_on(amt)	((amt)->flags |= AMTf_AMAGIC)
#define AMT_AMAGIC_off(amt)	((amt)->flags &= ~AMTf_AMAGIC)

enum {
  fallback_amg,	abs_amg,
  bool__amg,	nomethod_amg,
  string_amg,	numer_amg,
  add_amg,	add_ass_amg,
  subtr_amg,	subtr_ass_amg,
  mult_amg,	mult_ass_amg,
  div_amg,	div_ass_amg,
  modulo_amg,	modulo_ass_amg,
  pow_amg,	pow_ass_amg,
  lshift_amg,	lshift_ass_amg,
  rshift_amg,	rshift_ass_amg,
  band_amg,	band_ass_amg,
  bor_amg,	bor_ass_amg,
  bxor_amg,	bxor_ass_amg,
  lt_amg,	le_amg,
  gt_amg,	ge_amg,
  eq_amg,	ne_amg,
  ncmp_amg,	scmp_amg,
  slt_amg,	sle_amg,
  sgt_amg,	sge_amg,
  seq_amg,	sne_amg,
  not_amg,	compl_amg,
  inc_amg,	dec_amg,
  atan2_amg,	cos_amg,
  sin_amg,	exp_amg,
  log_amg,	sqrt_amg,
  repeat_amg,   repeat_ass_amg,
  concat_amg,	concat_ass_amg,
  copy_amg,	neg_amg
};

/*
 * some compilers like to redefine cos et alia as faster
 * (and less accurate?) versions called F_cos et cetera (Quidquid
 * latine dictum sit, altum viditur.)  This trick collides with
 * the Perl overloading (amg).  The following #defines fool both.
 */

#ifdef _FASTMATH
#   ifdef atan2
#       define F_atan2_amg  atan2_amg
#   endif
#   ifdef cos
#       define F_cos_amg    cos_amg
#   endif
#   ifdef exp
#       define F_exp_amg    exp_amg
#   endif
#   ifdef log
#       define F_log_amg    log_amg
#   endif
#   ifdef pow
#       define F_pow_amg    pow_amg
#   endif
#   ifdef sin
#       define F_sin_amg    sin_amg
#   endif
#   ifdef sqrt
#       define F_sqrt_amg   sqrt_amg
#   endif
#endif /* _FASTMATH */

#endif /* OVERLOAD */

#define PERLDB_ALL	0x3f		/* No _NONAME, _GOTO */
#define PERLDBf_SUB	0x01		/* Debug sub enter/exit. */
#define PERLDBf_LINE	0x02		/* Keep line #. */
#define PERLDBf_NOOPT	0x04		/* Switch off optimizations. */
#define PERLDBf_INTER	0x08		/* Preserve more data for
					   later inspections.  */
#define PERLDBf_SUBLINE	0x10		/* Keep subr source lines. */
#define PERLDBf_SINGLE	0x20		/* Start with single-step on. */
#define PERLDBf_NONAME	0x40		/* For _SUB: no name of the subr. */
#define PERLDBf_GOTO	0x80		/* Report goto: call DB::goto. */

#define PERLDB_SUB	(PL_perldb && (PL_perldb & PERLDBf_SUB))
#define PERLDB_LINE	(PL_perldb && (PL_perldb & PERLDBf_LINE))
#define PERLDB_NOOPT	(PL_perldb && (PL_perldb & PERLDBf_NOOPT))
#define PERLDB_INTER	(PL_perldb && (PL_perldb & PERLDBf_INTER))
#define PERLDB_SUBLINE	(PL_perldb && (PL_perldb & PERLDBf_SUBLINE))
#define PERLDB_SINGLE	(PL_perldb && (PL_perldb & PERLDBf_SINGLE))
#define PERLDB_SUB_NN	(PL_perldb && (PL_perldb & (PERLDBf_NONAME)))
#define PERLDB_GOTO	(PL_perldb && (PL_perldb & PERLDBf_GOTO))


#ifdef USE_LOCALE_NUMERIC

#define SET_NUMERIC_STANDARD() \
    STMT_START {				\
	if (! PL_numeric_standard)			\
	    perl_set_numeric_standard();	\
    } STMT_END

#define SET_NUMERIC_LOCAL() \
    STMT_START {				\
	if (! PL_numeric_local)			\
	    perl_set_numeric_local();		\
    } STMT_END

#else /* !USE_LOCALE_NUMERIC */

#define SET_NUMERIC_STANDARD()  /**/
#define SET_NUMERIC_LOCAL()     /**/

#endif /* !USE_LOCALE_NUMERIC */

#if !defined(PERLIO_IS_STDIO) && defined(HASATTRIBUTE)
/* 
 * Now we have __attribute__ out of the way 
 * Remap printf 
 */
#define printf PerlIO_stdoutf
#endif

#ifndef PERL_SCRIPT_MODE
#define PERL_SCRIPT_MODE "r"
#endif

/*
 * nice_chunk and nice_chunk size need to be set
 * and queried under the protection of sv_mutex
 */
#define offer_nice_chunk(chunk, chunk_size) do {	\
	LOCK_SV_MUTEX;					\
	if (!PL_nice_chunk) {				\
	    PL_nice_chunk = (char*)(chunk);		\
	    PL_nice_chunk_size = (chunk_size);		\
	}						\
	else {						\
	    Safefree(chunk);				\
	}						\
	UNLOCK_SV_MUTEX;				\
    } while (0)

#ifdef HAS_SEM
#   include <sys/ipc.h>
#   include <sys/sem.h>
#   ifndef HAS_UNION_SEMUN	/* Provide the union semun. */
    union semun {
	int val;
	struct semid_ds *buf;
	unsigned short *array;
    };
#   endif
#   ifdef USE_SEMCTL_SEMUN
#       define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun)
#   else
#       ifdef USE_SEMCTL_SEMID_DS
#           define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf)
#       endif
#   endif
#   ifndef Semctl	/* Place our bets on the semun horse. */
#       define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun)
#   endif
#endif

#endif /* Include guard */
