source: trunk/libs/newlib/src/include/libiberty.h @ 468

Last change on this file since 468 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 26.1 KB
Line 
1/* Function declarations for libiberty.
2
3   Copyright (C) 1997-2015 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., 51 Franklin Street - Fifth Floor,
25   Boston, MA 02110-1301, 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
39extern "C" {
40#endif
41
42#include "ansidecl.h"
43
44/* Get a definition for size_t.  */
45#include <stddef.h>
46/* Get a definition for va_list.  */
47#include <stdarg.h>
48
49#include <stdio.h>
50
51/* If the OS supports it, ensure that the supplied stream is setup to
52   avoid any multi-threaded locking.  Otherwise leave the FILE pointer
53   unchanged.  If the stream is NULL do nothing.  */
54
55extern void unlock_stream (FILE *);
56
57/* If the OS supports it, ensure that the standard I/O streams, stdin,
58   stdout and stderr are setup to avoid any multi-threaded locking.
59   Otherwise do nothing.  */
60
61extern void unlock_std_streams (void);
62
63/* Open and return a FILE pointer.  If the OS supports it, ensure that
64   the stream is setup to avoid any multi-threaded locking.  Otherwise
65   return the FILE pointer unchanged.  */
66
67extern FILE *fopen_unlocked (const char *, const char *);
68extern FILE *fdopen_unlocked (int, const char *);
69extern FILE *freopen_unlocked (const char *, const char *, FILE *);
70
71/* Build an argument vector from a string.  Allocates memory using
72   malloc.  Use freeargv to free the vector.  */
73
74extern char **buildargv (const char *) ATTRIBUTE_MALLOC;
75
76/* Free a vector returned by buildargv.  */
77
78extern void freeargv (char **);
79
80/* Duplicate an argument vector. Allocates memory using malloc.  Use
81   freeargv to free the vector.  */
82
83extern char **dupargv (char * const *) ATTRIBUTE_MALLOC;
84
85/* Expand "@file" arguments in argv.  */
86
87extern void expandargv (int *, char ***);
88
89/* Write argv to an @-file, inserting necessary quoting.  */
90
91extern int writeargv (char * const *, FILE *);
92
93/* Return the number of elements in argv.  */
94
95extern int countargv (char * const *);
96
97/* Return the last component of a path name.  Note that we can't use a
98   prototype here because the parameter is declared inconsistently
99   across different systems, sometimes as "char *" and sometimes as
100   "const char *" */
101
102/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is
103   undefined, we haven't run the autoconf check so provide the
104   declaration without arguments.  If it is 0, we checked and failed
105   to find the declaration so provide a fully prototyped one.  If it
106   is 1, we found it so don't provide any declaration at all.  */
107#if !HAVE_DECL_BASENAME
108#if defined (__GNU_LIBRARY__ ) || defined (__linux__) \
109 || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \
110 || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \
111 || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME)
112extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
113#else
114/* Do not allow basename to be used if there is no prototype seen.  We
115   either need to use the above prototype or have one from
116   autoconf which would result in HAVE_DECL_BASENAME being set.  */
117#define basename basename_cannot_be_used_without_a_prototype
118#endif
119#endif
120
121/* A well-defined basename () that is always compiled in.  */
122
123extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
124
125/* Same, but assumes DOS semantics (drive name, backslash is also a
126   dir separator) regardless of host.  */
127
128extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
129
130/* Same, but assumes Unix semantics (absolute paths always start with
131   a slash, only forward slash is accepted as dir separator)
132   regardless of host.  */
133
134extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
135
136/* A well-defined realpath () that is always compiled in.  */
137
138extern char *lrealpath (const char *);
139
140/* Concatenate an arbitrary number of strings.  You must pass NULL as
141   the last argument of this function, to terminate the list of
142   strings.  Allocates memory using xmalloc.  */
143
144extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
145
146/* Concatenate an arbitrary number of strings.  You must pass NULL as
147   the last argument of this function, to terminate the list of
148   strings.  Allocates memory using xmalloc.  The first argument is
149   not one of the strings to be concatenated, but if not NULL is a
150   pointer to be freed after the new string is created, similar to the
151   way xrealloc works.  */
152
153extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
154
155/* Determine the length of concatenating an arbitrary number of
156   strings.  You must pass NULL as the last argument of this function,
157   to terminate the list of strings.  */
158
159extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
160
161/* Concatenate an arbitrary number of strings into a SUPPLIED area of
162   memory.  You must pass NULL as the last argument of this function,
163   to terminate the list of strings.  The supplied memory is assumed
164   to be large enough.  */
165
166extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
167
168/* Concatenate an arbitrary number of strings into a GLOBAL area of
169   memory.  You must pass NULL as the last argument of this function,
170   to terminate the list of strings.  The supplied memory is assumed
171   to be large enough.  */
172
173extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
174
175/* This is the global area used by concat_copy2.  */
176
177extern char *libiberty_concat_ptr;
178
179/* Concatenate an arbitrary number of strings.  You must pass NULL as
180   the last argument of this function, to terminate the list of
181   strings.  Allocates memory using alloca.  The arguments are
182   evaluated twice!  */
183#define ACONCAT(ACONCAT_PARAMS) \
184  (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
185   concat_copy2 ACONCAT_PARAMS)
186
187/* Check whether two file descriptors refer to the same file.  */
188
189extern int fdmatch (int fd1, int fd2);
190
191/* Return the position of the first bit set in the argument.  */
192/* Prototypes vary from system to system, so we only provide a
193   prototype on systems where we know that we need it.  */
194#if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
195extern int ffs(int);
196#endif
197
198/* Get the working directory.  The result is cached, so don't call
199   chdir() between calls to getpwd().  */
200
201extern char * getpwd (void);
202
203/* Get the current time.  */
204/* Prototypes vary from system to system, so we only provide a
205   prototype on systems where we know that we need it.  */
206#ifdef __MINGW32__
207/* Forward declaration to avoid #include <sys/time.h>.   */
208struct timeval;
209extern int gettimeofday (struct timeval *, void *); 
210#endif
211
212/* Get the amount of time the process has run, in microseconds.  */
213
214extern long get_run_time (void);
215
216/* Generate a relocated path to some installation directory.  Allocates
217   return value using malloc.  */
218
219extern char *make_relative_prefix (const char *, const char *,
220                                   const char *) ATTRIBUTE_MALLOC;
221
222/* Generate a relocated path to some installation directory without
223   attempting to follow any soft links.  Allocates
224   return value using malloc.  */
225
226extern char *make_relative_prefix_ignore_links (const char *, const char *,
227                                                const char *) ATTRIBUTE_MALLOC;
228
229/* Returns a pointer to a directory path suitable for creating temporary
230   files in.  */
231
232extern const char *choose_tmpdir (void) ATTRIBUTE_RETURNS_NONNULL;
233
234/* Choose a temporary directory to use for scratch files.  */
235
236extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
237
238/* Return a temporary file name or NULL if unable to create one.  */
239
240extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
241
242/* Remove a link to a file unless it is special. */
243
244extern int unlink_if_ordinary (const char *);
245
246/* Allocate memory filled with spaces.  Allocates using malloc.  */
247
248extern const char *spaces (int count);
249
250/* Return the maximum error number for which strerror will return a
251   string.  */
252
253extern int errno_max (void);
254
255/* Return the name of an errno value (e.g., strerrno (EINVAL) returns
256   "EINVAL").  */
257
258extern const char *strerrno (int);
259
260/* Given the name of an errno value, return the value.  */
261
262extern int strtoerrno (const char *);
263
264/* ANSI's strerror(), but more robust.  */
265
266extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL;
267
268/* Return the maximum signal number for which strsignal will return a
269   string.  */
270
271extern int signo_max (void);
272
273/* Return a signal message string for a signal number
274   (e.g., strsignal (SIGHUP) returns something like "Hangup").  */
275/* This is commented out as it can conflict with one in system headers.
276   We still document its existence though.  */
277
278/*extern const char *strsignal (int);*/
279
280/* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
281   "SIGHUP").  */
282
283extern const char *strsigno (int);
284
285/* Given the name of a signal, return its number.  */
286
287extern int strtosigno (const char *);
288
289/* Register a function to be run by xexit.  Returns 0 on success.  */
290
291extern int xatexit (void (*fn) (void));
292
293/* Exit, calling all the functions registered with xatexit.  */
294
295extern void xexit (int status) ATTRIBUTE_NORETURN;
296
297/* Set the program name used by xmalloc.  */
298
299extern void xmalloc_set_program_name (const char *);
300
301/* Report an allocation failure.  */
302extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
303
304/* Allocate memory without fail.  If malloc fails, this will print a
305   message to stderr (using the name set by xmalloc_set_program_name,
306   if any) and then call xexit.  */
307
308extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
309
310/* Reallocate memory without fail.  This works like xmalloc.  Note,
311   realloc type functions are not suitable for attribute malloc since
312   they may return the same address across multiple calls. */
313
314extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL;
315
316/* Allocate memory without fail and set it to zero.  This works like
317   xmalloc.  */
318
319extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
320
321/* Copy a string into a memory buffer without fail.  */
322
323extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
324
325/* Copy at most N characters from string into a buffer without fail.  */
326
327extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
328
329/* Copy an existing memory buffer to a new memory buffer without fail.  */
330
331extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
332
333/* Physical memory routines.  Return values are in BYTES.  */
334extern double physmem_total (void);
335extern double physmem_available (void);
336
337/* Compute the 32-bit CRC of a block of memory.  */
338extern unsigned int xcrc32 (const unsigned char *, int, unsigned int);
339
340/* These macros provide a K&R/C89/C++-friendly way of allocating structures
341   with nice encapsulation.  The XDELETE*() macros are technically
342   superfluous, but provided here for symmetry.  Using them consistently
343   makes it easier to update client code to use different allocators such
344   as new/delete and new[]/delete[].  */
345
346/* Scalar allocators.  */
347
348#define XALLOCA(T)              ((T *) alloca (sizeof (T)))
349#define XNEW(T)                 ((T *) xmalloc (sizeof (T)))
350#define XCNEW(T)                ((T *) xcalloc (1, sizeof (T)))
351#define XDUP(T, P)              ((T *) xmemdup ((P), sizeof (T), sizeof (T)))
352#define XDELETE(P)              free ((void*) (P))
353
354/* Array allocators.  */
355
356#define XALLOCAVEC(T, N)        ((T *) alloca (sizeof (T) * (N)))
357#define XNEWVEC(T, N)           ((T *) xmalloc (sizeof (T) * (N)))
358#define XCNEWVEC(T, N)          ((T *) xcalloc ((N), sizeof (T)))
359#define XDUPVEC(T, P, N)        ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))
360#define XRESIZEVEC(T, P, N)     ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
361#define XDELETEVEC(P)           free ((void*) (P))
362
363/* Allocators for variable-sized structures and raw buffers.  */
364
365#define XALLOCAVAR(T, S)        ((T *) alloca ((S)))
366#define XNEWVAR(T, S)           ((T *) xmalloc ((S)))
367#define XCNEWVAR(T, S)          ((T *) xcalloc (1, (S)))
368#define XDUPVAR(T, P, S1, S2)   ((T *) xmemdup ((P), (S1), (S2)))
369#define XRESIZEVAR(T, P, S)     ((T *) xrealloc ((P), (S)))
370
371/* Type-safe obstack allocator.  */
372
373#define XOBNEW(O, T)            ((T *) obstack_alloc ((O), sizeof (T)))
374#define XOBNEWVEC(O, T, N)      ((T *) obstack_alloc ((O), sizeof (T) * (N)))
375#define XOBNEWVAR(O, T, S)      ((T *) obstack_alloc ((O), (S)))
376#define XOBFINISH(O, T)         ((T) obstack_finish ((O)))
377
378/* hex character manipulation routines */
379
380#define _hex_array_size 256
381#define _hex_bad        99
382extern const unsigned char _hex_value[_hex_array_size];
383extern void hex_init (void);
384#define hex_p(c)        (hex_value (c) != _hex_bad)
385/* If you change this, note well: Some code relies on side effects in
386   the argument being performed exactly once.  */
387#define hex_value(c)    ((unsigned int) _hex_value[(unsigned char) (c)])
388
389/* Flags for pex_init.  These are bits to be or'ed together.  */
390
391/* Record subprocess times, if possible.  */
392#define PEX_RECORD_TIMES        0x1
393
394/* Use pipes for communication between processes, if possible.  */
395#define PEX_USE_PIPES           0x2
396
397/* Save files used for communication between processes.  */
398#define PEX_SAVE_TEMPS          0x4
399
400/* Prepare to execute one or more programs, with standard output of
401   each program fed to standard input of the next.
402   FLAGS        As above.
403   PNAME        The name of the program to report in error messages.
404   TEMPBASE     A base name to use for temporary files; may be NULL to
405                use a random name.
406   Returns NULL on error.  */
407
408extern struct pex_obj *pex_init (int flags, const char *pname,
409                                 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL;
410
411/* Flags for pex_run.  These are bits to be or'ed together.  */
412
413/* Last program in pipeline.  Standard output of program goes to
414   OUTNAME, or, if OUTNAME is NULL, to standard output of caller.  Do
415   not set this if you want to call pex_read_output.  After this is
416   set, pex_run may no longer be called with the same struct
417   pex_obj.  */
418#define PEX_LAST                0x1
419
420/* Search for program in executable search path.  */
421#define PEX_SEARCH              0x2
422
423/* OUTNAME is a suffix.  */
424#define PEX_SUFFIX              0x4
425
426/* Send program's standard error to standard output.  */
427#define PEX_STDERR_TO_STDOUT    0x8
428
429/* Input file should be opened in binary mode.  This flag is ignored
430   on Unix.  */
431#define PEX_BINARY_INPUT        0x10
432
433/* Output file should be opened in binary mode.  This flag is ignored
434   on Unix.  For proper behaviour PEX_BINARY_INPUT and
435   PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
436   PEX_BINARY_OUTPUT should be followed by a call using
437   PEX_BINARY_INPUT.  */
438#define PEX_BINARY_OUTPUT       0x20
439
440/* Capture stderr to a pipe.  The output can be read by
441   calling pex_read_err and reading from the returned
442   FILE object.  This flag may be specified only for
443   the last program in a pipeline. 
444
445   This flag is supported only on Unix and Windows.  */
446#define PEX_STDERR_TO_PIPE      0x40
447
448/* Capture stderr in binary mode.  This flag is ignored
449   on Unix.  */
450#define PEX_BINARY_ERROR        0x80
451
452/* Append stdout to existing file instead of truncating it.  */
453#define PEX_STDOUT_APPEND       0x100
454
455/* Thes same as PEX_STDOUT_APPEND, but for STDERR.  */
456#define PEX_STDERR_APPEND       0x200
457
458/* Execute one program.  Returns NULL on success.  On error returns an
459   error string (typically just the name of a system call); the error
460   string is statically allocated.
461
462   OBJ          Returned by pex_init.
463
464   FLAGS        As above.
465
466   EXECUTABLE   The program to execute.
467
468   ARGV         NULL terminated array of arguments to pass to the program.
469
470   OUTNAME      Sets the output file name as follows:
471
472                PEX_SUFFIX set (OUTNAME may not be NULL):
473                  TEMPBASE parameter to pex_init not NULL:
474                    Output file name is the concatenation of TEMPBASE
475                    and OUTNAME.
476                  TEMPBASE is NULL:
477                    Output file name is a random file name ending in
478                    OUTNAME.
479                PEX_SUFFIX not set:
480                  OUTNAME not NULL:
481                    Output file name is OUTNAME.
482                  OUTNAME NULL, TEMPBASE not NULL:
483                    Output file name is randomly chosen using
484                    TEMPBASE.
485                  OUTNAME NULL, TEMPBASE NULL:
486                    Output file name is randomly chosen.
487
488                If PEX_LAST is not set, the output file name is the
489                name to use for a temporary file holding stdout, if
490                any (there will not be a file if PEX_USE_PIPES is set
491                and the system supports pipes).  If a file is used, it
492                will be removed when no longer needed unless
493                PEX_SAVE_TEMPS is set.
494
495                If PEX_LAST is set, and OUTNAME is not NULL, standard
496                output is written to the output file name.  The file
497                will not be removed.  If PEX_LAST and PEX_SUFFIX are
498                both set, TEMPBASE may not be NULL.
499
500   ERRNAME      If not NULL, this is the name of a file to which
501                standard error is written.  If NULL, standard error of
502                the program is standard error of the caller.
503
504   ERR          On an error return, *ERR is set to an errno value, or
505                to 0 if there is no relevant errno.
506*/
507
508extern const char *pex_run (struct pex_obj *obj, int flags,
509                            const char *executable, char * const *argv,
510                            const char *outname, const char *errname,
511                            int *err);
512
513/* As for pex_run (), but takes an extra parameter to enable the
514   environment for the child process to be specified.
515
516   ENV          The environment for the child process, specified as
517                an array of character pointers.  Each element of the
518                array should point to a string of the form VAR=VALUE,
519                with the exception of the last element which must be
520                a null pointer.
521*/
522
523extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
524                                           const char *executable,
525                                           char * const *argv,
526                                           char * const *env,
527                                           const char *outname,
528                                           const char *errname, int *err);
529
530/* Return a stream for a temporary file to pass to the first program
531   in the pipeline as input.  The file name is chosen as for pex_run.
532   pex_run closes the file automatically; don't close it yourself.  */
533
534extern FILE *pex_input_file (struct pex_obj *obj, int flags,
535                             const char *in_name);
536
537/* Return a stream for a pipe connected to the standard input of the
538   first program in the pipeline.  You must have passed
539   `PEX_USE_PIPES' to `pex_init'.  Close the returned stream
540   yourself.  */
541
542extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
543
544/* Read the standard output of the last program to be executed.
545   pex_run can not be called after this.  BINARY should be non-zero if
546   the file should be opened in binary mode; this is ignored on Unix.
547   Returns NULL on error.  Don't call fclose on the returned FILE; it
548   will be closed by pex_free.  */
549
550extern FILE *pex_read_output (struct pex_obj *, int binary);
551
552/* Read the standard error of the last program to be executed.
553   pex_run can not be called after this.  BINARY should be non-zero if
554   the file should be opened in binary mode; this is ignored on Unix.
555   Returns NULL on error.  Don't call fclose on the returned FILE; it
556   will be closed by pex_free.  */
557
558extern FILE *pex_read_err (struct pex_obj *, int binary);
559
560/* Return exit status of all programs in VECTOR.  COUNT indicates the
561   size of VECTOR.  The status codes in the vector are in the order of
562   the calls to pex_run.  Returns 0 on error, 1 on success.  */
563
564extern int pex_get_status (struct pex_obj *, int count, int *vector);
565
566/* Return times of all programs in VECTOR.  COUNT indicates the size
567   of VECTOR.  struct pex_time is really just struct timeval, but that
568   is not portable to all systems.  Returns 0 on error, 1 on
569   success.  */
570
571struct pex_time
572{
573  unsigned long user_seconds;
574  unsigned long user_microseconds;
575  unsigned long system_seconds;
576  unsigned long system_microseconds;
577};
578
579extern int pex_get_times (struct pex_obj *, int count,
580                          struct pex_time *vector);
581
582/* Clean up a pex_obj.  If you have not called pex_get_times or
583   pex_get_status, this will try to kill the subprocesses.  */
584
585extern void pex_free (struct pex_obj *);
586
587/* Just execute one program.  Return value is as for pex_run.
588   FLAGS        Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
589   EXECUTABLE   As for pex_run.
590   ARGV         As for pex_run.
591   PNAME        As for pex_init.
592   OUTNAME      As for pex_run when PEX_LAST is set.
593   ERRNAME      As for pex_run.
594   STATUS       Set to exit status on success.
595   ERR          As for pex_run.
596*/
597
598extern const char *pex_one (int flags, const char *executable,
599                            char * const *argv, const char *pname,
600                            const char *outname, const char *errname,
601                            int *status, int *err);
602
603/* pexecute and pwait are the old pexecute interface, still here for
604   backward compatibility.  Don't use these for new code.  Instead,
605   use pex_init/pex_run/pex_get_status/pex_free, or pex_one.  */
606
607/* Definitions used by the pexecute routine.  */
608
609#define PEXECUTE_FIRST   1
610#define PEXECUTE_LAST    2
611#define PEXECUTE_ONE     (PEXECUTE_FIRST + PEXECUTE_LAST)
612#define PEXECUTE_SEARCH  4
613#define PEXECUTE_VERBOSE 8
614
615/* Execute a program.  */
616
617extern int pexecute (const char *, char * const *, const char *,
618                     const char *, char **, char **, int);
619
620/* Wait for pexecute to finish.  */
621
622extern int pwait (int, int *, int);
623
624#if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF
625/* Like sprintf but provides a pointer to malloc'd storage, which must
626   be freed by the caller.  */
627
628extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
629#endif
630
631/* Like asprintf but allocates memory without fail. This works like
632   xmalloc.  */
633
634extern char *xasprintf (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF_1;
635
636#if !HAVE_DECL_VASPRINTF
637/* Like vsprintf but provides a pointer to malloc'd storage, which
638   must be freed by the caller.  */
639
640extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
641#endif
642
643/* Like vasprintf but allocates memory without fail. This works like
644   xmalloc.  */
645
646extern char *xvasprintf (const char *, va_list) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF(1,0);
647
648#if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
649/* Like sprintf but prints at most N characters.  */
650extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
651#endif
652
653#if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
654/* Like vsprintf but prints at most N characters.  */
655extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
656#endif
657
658#if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN
659extern size_t strnlen (const char *, size_t);
660#endif
661
662#if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
663/* Compare version strings.  */
664extern int strverscmp (const char *, const char *);
665#endif
666
667#if defined(HAVE_DECL_STRTOL) && !HAVE_DECL_STRTOL
668extern long int strtol (const char *nptr,
669                        char **endptr, int base);
670#endif
671
672#if defined(HAVE_DECL_STRTOUL) && !HAVE_DECL_STRTOUL
673extern unsigned long int strtoul (const char *nptr,
674                                  char **endptr, int base);
675#endif
676
677#if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOLL) && !HAVE_DECL_STRTOLL
678__extension__
679extern long long int strtoll (const char *nptr,
680                              char **endptr, int base);
681#endif
682
683#if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOULL) && !HAVE_DECL_STRTOULL
684__extension__
685extern unsigned long long int strtoull (const char *nptr,
686                                        char **endptr, int base);
687#endif
688
689#if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
690/* Compare version strings.  */
691extern int strverscmp (const char *, const char *);
692#endif
693
694/* Set the title of a process */
695extern void setproctitle (const char *name, ...);
696
697/* Increase stack limit if possible.  */
698extern void stack_limit_increase (unsigned long);
699
700#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
701
702/* Drastically simplified alloca configurator.  If we're using GCC,
703   we use __builtin_alloca; otherwise we use the C alloca.  The C
704   alloca is always available.  You can override GCC by defining
705   USE_C_ALLOCA yourself.  The canonical autoconf macro C_ALLOCA is
706   also set/unset as it is often used to indicate whether code needs
707   to call alloca(0).  */
708extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
709#undef alloca
710#if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
711# define alloca(x) __builtin_alloca(x)
712# undef C_ALLOCA
713# define ASTRDUP(X) \
714  (__extension__ ({ const char *const libiberty_optr = (X); \
715   const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
716   char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
717   (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
718#else
719# define alloca(x) C_alloca(x)
720# undef USE_C_ALLOCA
721# define USE_C_ALLOCA 1
722# undef C_ALLOCA
723# define C_ALLOCA 1
724extern const char *libiberty_optr;
725extern char *libiberty_nptr;
726extern unsigned long libiberty_len;
727# define ASTRDUP(X) \
728  (libiberty_optr = (X), \
729   libiberty_len = strlen (libiberty_optr) + 1, \
730   libiberty_nptr = (char *) alloca (libiberty_len), \
731   (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
732#endif
733
734#ifdef __cplusplus
735}
736#endif
737
738
739#endif /* ! defined (LIBIBERTY_H) */
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