source: branches/libc-0.6/src/binutils/include/libiberty.h

/* Function declarations for libiberty.

   Copyright 2001, 2002 Free Software Foundation, Inc.

   Note - certain prototypes declared in this header file are for
   functions whoes implementation copyright does not belong to the
   FSF.  Those prototypes are present in this file for reference
   purposes only and their presence in this file should not construed
   as an indication of ownership by the FSF of the implementation of
   those functions in any way or form whatsoever.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.

   Written by Cygnus Support, 1994.

   The libiberty library provides a number of functions which are
   missing on some operating systems.  We do not declare those here,
   to avoid conflicts with the system header files on operating
   systems that do support those functions.  In this file we only
   declare those functions which are specific to libiberty.  */

#ifndef LIBIBERTY_H
#define LIBIBERTY_H

#ifdef __cplusplus
extern "C" {
#endif

#include "ansidecl.h"

#ifdef ANSI_PROTOTYPES
/* Get a definition for size_t.  */
#include <stddef.h>
/* Get a definition for va_list.  */
#include <stdarg.h>
#endif

/* Build an argument vector from a string.  Allocates memory using
   malloc.  Use freeargv to free the vector.  */

extern char **buildargv PARAMS ((const char *)) ATTRIBUTE_MALLOC;

/* Free a vector returned by buildargv.  */

extern void freeargv PARAMS ((char **));

/* Duplicate an argument vector. Allocates memory using malloc.  Use
   freeargv to free the vector.  */

extern char **dupargv PARAMS ((char **)) ATTRIBUTE_MALLOC;


/* Return the last component of a path name.  Note that we can't use a
   prototype here because the parameter is declared inconsistently
   across different systems, sometimes as "char *" and sometimes as
   "const char *" */

/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is
   undefined, we haven't run the autoconf check so provide the
   declaration without arguments.  If it is 0, we checked and failed
   to find the declaration so provide a fully prototyped one.  If it
   is 1, we found it so don't provide any declaration at all.  */
#if !HAVE_DECL_BASENAME
#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__EMX__) || defined (HAVE_DECL_BASENAME)
extern char *basename PARAMS ((const char *));
#else
extern char *basename ();
#endif
#endif

/* A well-defined basename () that is always compiled in.  */

extern const char *lbasename PARAMS ((const char *));

/* A well-defined realpath () that is always compiled in.  */

extern char *lrealpath PARAMS ((const char *));

/* Concatenate an arbitrary number of strings.  You must pass NULL as
   the last argument of this function, to terminate the list of
   strings.  Allocates memory using xmalloc.  */

extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;

/* Concatenate an arbitrary number of strings.  You must pass NULL as
   the last argument of this function, to terminate the list of
   strings.  Allocates memory using xmalloc.  The first argument is
   not one of the strings to be concatenated, but if not NULL is a
   pointer to be freed after the new string is created, similar to the
   way xrealloc works.  */

extern char *reconcat PARAMS ((char *, const char *, ...)) ATTRIBUTE_MALLOC;

/* Determine the length of concatenating an arbitrary number of
   strings.  You must pass NULL as the last argument of this function,
   to terminate the list of strings.  */

extern unsigned long concat_length PARAMS ((const char *, ...));

/* Concatenate an arbitrary number of strings into a SUPPLIED area of
   memory.  You must pass NULL as the last argument of this function,
   to terminate the list of strings.  The supplied memory is assumed
   to be large enough.  */

extern char *concat_copy PARAMS ((char *, const char *, ...));

/* Concatenate an arbitrary number of strings into a GLOBAL area of
   memory.  You must pass NULL as the last argument of this function,
   to terminate the list of strings.  The supplied memory is assumed
   to be large enough.  */

extern char *concat_copy2 PARAMS ((const char *, ...));

/* This is the global area used by concat_copy2.  */

extern char *libiberty_concat_ptr;

/* Concatenate an arbitrary number of strings.  You must pass NULL as
   the last argument of this function, to terminate the list of
   strings.  Allocates memory using alloca.  The arguments are
   evaluated twice!  */
#define ACONCAT(ACONCAT_PARAMS) \
  (libiberty_concat_ptr = alloca (concat_length ACONCAT_PARAMS + 1), \
   concat_copy2 ACONCAT_PARAMS)

/* Check whether two file descriptors refer to the same file.  */

extern int fdmatch PARAMS ((int fd1, int fd2));

/* Get the working directory.  The result is cached, so don't call
   chdir() between calls to getpwd().  */

extern char * getpwd PARAMS ((void));

/* Get the amount of time the process has run, in microseconds.  */

extern long get_run_time PARAMS ((void));

/* Generate a relocated path to some installation directory.  Allocates
   return value using malloc.  */

extern char *make_relative_prefix PARAMS ((const char *, const char *,
                                           const char *));

/* Choose a temporary directory to use for scratch files.  */

extern char *choose_temp_base PARAMS ((void)) ATTRIBUTE_MALLOC;

/* Return a temporary file name or NULL if unable to create one.  */

extern char *make_temp_file PARAMS ((const char *)) ATTRIBUTE_MALLOC;

/* Allocate memory filled with spaces.  Allocates using malloc.  */

extern const char *spaces PARAMS ((int count));

/* Return the maximum error number for which strerror will return a
   string.  */

extern int errno_max PARAMS ((void));

/* Return the name of an errno value (e.g., strerrno (EINVAL) returns
   "EINVAL").  */

extern const char *strerrno PARAMS ((int));

/* Given the name of an errno value, return the value.  */

extern int strtoerrno PARAMS ((const char *));

/* ANSI's strerror(), but more robust.  */

extern char *xstrerror PARAMS ((int));

/* Return the maximum signal number for which strsignal will return a
   string.  */

extern int signo_max PARAMS ((void));

/* Return a signal message string for a signal number
   (e.g., strsignal (SIGHUP) returns something like "Hangup").  */
/* This is commented out as it can conflict with one in system headers.
   We still document its existence though.  */

/*extern const char *strsignal PARAMS ((int));*/

/* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
   "SIGHUP").  */

extern const char *strsigno PARAMS ((int));

/* Given the name of a signal, return its number.  */

extern int strtosigno PARAMS ((const char *));

/* Register a function to be run by xexit.  Returns 0 on success.  */

extern int xatexit PARAMS ((void (*fn) (void)));

/* Exit, calling all the functions registered with xatexit.  */

extern void xexit PARAMS ((int status)) ATTRIBUTE_NORETURN;

/* Set the program name used by xmalloc.  */

extern void xmalloc_set_program_name PARAMS ((const char *));