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  1. /* Function declarations for libiberty.
  2.  
  3.    Copyright 2001 Free Software Foundation, Inc.
  4.    
  5.    Note - certain prototypes declared in this header file are for
  6.    functions whoes implementation copyright does not belong to the
  7.    FSF.  Those prototypes are present in this file for reference
  8.    purposes only and their presence in this file should not construed
  9.    as an indication of ownership by the FSF of the implementation of
  10.    those functions in any way or form whatsoever.
  11.  
  12.    This program is free software; you can redistribute it and/or modify
  13.    it under the terms of the GNU General Public License as published by
  14.    the Free Software Foundation; either version 2, or (at your option)
  15.    any later version.
  16.  
  17.    This program is distributed in the hope that it will be useful,
  18.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20.    GNU General Public License for more details.
  21.  
  22.    You should have received a copy of the GNU General Public License
  23.    along with this program; if not, write to the Free Software
  24.    Foundation, Inc., 59 Temple Place - Suite 330,
  25.    Boston, MA 02111-1307, USA.
  26.    
  27.    Written by Cygnus Support, 1994.
  28.  
  29.    The libiberty library provides a number of functions which are
  30.    missing on some operating systems.  We do not declare those here,
  31.    to avoid conflicts with the system header files on operating
  32.    systems that do support those functions.  In this file we only
  33.    declare those functions which are specific to libiberty.  */
  34.  
  35. #ifndef LIBIBERTY_H
  36. #define LIBIBERTY_H
  37.  
  38. #ifdef __cplusplus
  39. extern "C" {
  40. #endif
  41.  
  42. #include "ansidecl.h"
  43.  
  44. #ifdef ANSI_PROTOTYPES
  45. /* Get a definition for size_t.  */
  46. #include <stddef.h>
  47. /* Get a definition for va_list.  */
  48. #include <stdarg.h>
  49. #endif
  50.  
  51. /* Build an argument vector from a string.  Allocates memory using
  52.    malloc.  Use freeargv to free the vector.  */
  53.  
  54. extern char **buildargv PARAMS ((char *)) ATTRIBUTE_MALLOC;
  55.  
  56. /* Free a vector returned by buildargv.  */
  57.  
  58. extern void freeargv PARAMS ((char **));
  59.  
  60. /* Duplicate an argument vector. Allocates memory using malloc.  Use
  61.    freeargv to free the vector.  */
  62.  
  63. extern char **dupargv PARAMS ((char **)) ATTRIBUTE_MALLOC;
  64.  
  65.  
  66. /* Return the last component of a path name.  Note that we can't use a
  67.    prototype here because the parameter is declared inconsistently
  68.    across different systems, sometimes as "char *" and sometimes as
  69.    "const char *" */
  70.  
  71. /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is
  72.    undefined, we haven't run the autoconf check so provide the
  73.    declaration without arguments.  If it is 0, we checked and failed
  74.    to find the declaration so provide a fully prototyped one.  If it
  75.    is 1, we found it so don't provide any declaration at all.  */
  76. #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || (defined (HAVE_DECL_BASENAME) && !HAVE_DECL_BASENAME)
  77. extern char *basename PARAMS ((const char *));
  78. #else
  79. # if !defined (HAVE_DECL_BASENAME)
  80. extern char *basename ();
  81. # endif
  82. #endif
  83.  
  84. /* A well-defined basename () that is always compiled in.  */
  85.  
  86. extern char *lbasename PARAMS ((const char *));
  87.  
  88. /* Concatenate an arbitrary number of strings, up to (char *) NULL.
  89.    Allocates memory using xmalloc.  */
  90.  
  91. extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
  92.  
  93. /* Check whether two file descriptors refer to the same file.  */
  94.  
  95. extern int fdmatch PARAMS ((int fd1, int fd2));
  96.  
  97. /* Get the working directory.  The result is cached, so don't call
  98.    chdir() between calls to getpwd().  */
  99.  
  100. extern char * getpwd PARAMS ((void));
  101.  
  102. /* Get the amount of time the process has run, in microseconds.  */
  103.  
  104. extern long get_run_time PARAMS ((void));
  105.  
  106. /* Choose a temporary directory to use for scratch files.  */
  107.  
  108. extern char *choose_temp_base PARAMS ((void)) ATTRIBUTE_MALLOC;
  109.  
  110. /* Return a temporary file name or NULL if unable to create one.  */
  111.  
  112. extern char *make_temp_file PARAMS ((const char *)) ATTRIBUTE_MALLOC;
  113.  
  114. /* Allocate memory filled with spaces.  Allocates using malloc.  */
  115.  
  116. extern const char *spaces PARAMS ((int count));
  117.  
  118. /* Return the maximum error number for which strerror will return a
  119.    string.  */
  120.  
  121. extern int errno_max PARAMS ((void));
  122.  
  123. /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
  124.    "EINVAL").  */
  125.  
  126. extern const char *strerrno PARAMS ((int));
  127.  
  128. /* Given the name of an errno value, return the value.  */
  129.  
  130. extern int strtoerrno PARAMS ((const char *));
  131.  
  132. /* ANSI's strerror(), but more robust.  */
  133.  
  134. extern char *xstrerror PARAMS ((int));
  135.  
  136. /* Return the maximum signal number for which strsignal will return a
  137.    string.  */
  138.  
  139. extern int signo_max PARAMS ((void));
  140.  
  141. /* Return a signal message string for a signal number
  142.    (e.g., strsignal (SIGHUP) returns something like "Hangup").  */
  143. /* This is commented out as it can conflict with one in system headers.
  144.    We still document its existence though.  */
  145.  
  146. /*extern const char *strsignal PARAMS ((int));*/
  147.  
  148. /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
  149.    "SIGHUP").  */
  150.  
  151. extern const char *strsigno PARAMS ((int));
  152.  
  153. /* Given the name of a signal, return its number.  */
  154.  
  155. extern int strtosigno PARAMS ((const char *));
  156.  
  157. /* Register a function to be run by xexit.  Returns 0 on success.  */
  158.  
  159. extern int xatexit PARAMS ((void (*fn) (void)));
  160.  
  161. /* Exit, calling all the functions registered with xatexit.  */
  162.  
  163. extern void xexit PARAMS ((int status)) ATTRIBUTE_NORETURN;
  164.  
  165. /* Set the program name used by xmalloc.  */
  166.  
  167. extern void xmalloc_set_program_name PARAMS ((const char *));
  168.  
  169. /* Report an allocation failure.  */
  170. extern void xmalloc_failed PARAMS ((size_t)) ATTRIBUTE_NORETURN;
  171.  
  172. /* Allocate memory without fail.  If malloc fails, this will print a
  173.    message to stderr (using the name set by xmalloc_set_program_name,
  174.    if any) and then call xexit.  */
  175.  
  176. extern PTR xmalloc PARAMS ((size_t)) ATTRIBUTE_MALLOC;
  177.  
  178. /* Reallocate memory without fail.  This works like xmalloc.  Note,
  179.    realloc type functions are not suitable for attribute malloc since
  180.    they may return the same address across multiple calls. */
  181.  
  182. extern PTR xrealloc PARAMS ((PTR, size_t));
  183.  
  184. /* Allocate memory without fail and set it to zero.  This works like
  185.    xmalloc.  */
  186.  
  187. extern PTR xcalloc PARAMS ((size_t, size_t)) ATTRIBUTE_MALLOC;
  188.  
  189. /* Copy a string into a memory buffer without fail.  */
  190.  
  191. extern char *xstrdup PARAMS ((const char *)) ATTRIBUTE_MALLOC;
  192.  
  193. /* Copy an existing memory buffer to a new memory buffer without fail.  */
  194.  
  195. extern PTR xmemdup PARAMS ((const PTR, size_t, size_t)) ATTRIBUTE_MALLOC;
  196.  
  197. /* hex character manipulation routines */
  198.  
  199. #define _hex_array_size 256
  200. #define _hex_bad        99
  201. extern char _hex_value[_hex_array_size];
  202. extern void hex_init PARAMS ((void));
  203. #define hex_p(c)        (hex_value (c) != _hex_bad)
  204. /* If you change this, note well: Some code relies on side effects in
  205.    the argument being performed exactly once.  */
  206. #define hex_value(c)    (_hex_value[(unsigned char) (c)])
  207.  
  208. /* Definitions used by the pexecute routine.  */
  209.  
  210. #define PEXECUTE_FIRST   1
  211. #define PEXECUTE_LAST    2
  212. #define PEXECUTE_ONE     (PEXECUTE_FIRST + PEXECUTE_LAST)
  213. #define PEXECUTE_SEARCH  4
  214. #define PEXECUTE_VERBOSE 8
  215.  
  216. /* Execute a program.  */
  217.  
  218. extern int pexecute PARAMS ((const char *, char * const *, const char *,
  219.                             const char *, char **, char **, int));
  220.  
  221. /* Wait for pexecute to finish.  */
  222.  
  223. extern int pwait PARAMS ((int, int *, int));
  224.  
  225. /* Like sprintf but provides a pointer to malloc'd storage, which must
  226.    be freed by the caller.  */
  227.  
  228. extern int asprintf PARAMS ((char **, const char *, ...)) ATTRIBUTE_PRINTF_2;
  229.  
  230. /* Like vsprintf but provides a pointer to malloc'd storage, which
  231.    must be freed by the caller.  */
  232.  
  233. extern int vasprintf PARAMS ((char **, const char *, va_list))
  234.   ATTRIBUTE_PRINTF(2,0);
  235.  
  236. #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
  237.  
  238. /* Drastically simplified alloca configurator.  If we're using GCC,
  239.    we use __builtin_alloca; otherwise we use the C alloca.  The C
  240.    alloca is always available.  You can override GCC by defining
  241.    USE_C_ALLOCA yourself.  The canonical autoconf macro C_ALLOCA is
  242.    also set/unset as it is often used to indicate whether code needs
  243.    to call alloca(0).  */
  244. extern PTR C_alloca PARAMS((size_t));
  245. #undef alloca
  246. #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
  247. # define alloca(x) __builtin_alloca(x)
  248. # undef C_ALLOCA
  249. #else
  250. # define alloca(x) C_alloca(x)
  251. # undef USE_C_ALLOCA
  252. # define USE_C_ALLOCA 1
  253. # undef C_ALLOCA
  254. # define C_ALLOCA 1
  255. #endif
  256.  
  257. #ifdef __cplusplus
  258. }
  259. #endif
  260.  
  261.  
  262. #endif /* ! defined (LIBIBERTY_H) */
  263.