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gcc.gnu.org Git - gcc.git/blob - include/libiberty.h
1 /* Function declarations for libiberty.
2 Written by Cygnus Support, 1994.
4 The libiberty library provides a number of functions which are
5 missing on some operating systems. We do not declare those here,
6 to avoid conflicts with the system header files on operating
7 systems that do support those functions. In this file we only
8 declare those functions which are specific to libiberty. */
19 /* Build an argument vector from a string. Allocates memory using
20 malloc. Use freeargv to free the vector. */
22 extern char ** buildargv
PARAMS (( char *)) ATTRIBUTE_MALLOC
;
24 /* Free a vector returned by buildargv. */
26 extern void freeargv
PARAMS (( char **));
28 /* Duplicate an argument vector. Allocates memory using malloc. Use
29 freeargv to free the vector. */
31 extern char ** dupargv
PARAMS (( char **)) ATTRIBUTE_MALLOC
;
34 /* Return the last component of a path name. Note that we can't use a
35 prototype here because the parameter is declared inconsistently
36 across different systems, sometimes as "char *" and sometimes as
39 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__)
40 extern char * basename
PARAMS (( const char *));
42 extern char * basename ();
45 /* Concatenate an arbitrary number of strings, up to (char *) NULL.
46 Allocates memory using xmalloc. */
48 extern char * concat
PARAMS (( const char *, ...)) ATTRIBUTE_MALLOC
;
50 /* Check whether two file descriptors refer to the same file. */
52 extern int fdmatch
PARAMS (( int fd1
, int fd2
));
54 /* Get the working directory. The result is cached, so don't call
55 chdir() between calls to getpwd(). */
57 extern char * getpwd
PARAMS (( void ));
59 /* Get the amount of time the process has run, in microseconds. */
61 extern long get_run_time
PARAMS (( void ));
63 /* Choose a temporary directory to use for scratch files. */
65 extern char * choose_temp_base
PARAMS (( void )) ATTRIBUTE_MALLOC
;
67 /* Return a temporary file name or NULL if unable to create one. */
69 extern char * make_temp_file
PARAMS (( const char *)) ATTRIBUTE_MALLOC
;
71 /* Allocate memory filled with spaces. Allocates using malloc. */
73 extern const char * spaces
PARAMS (( int count
));
75 /* Return the maximum error number for which strerror will return a
78 extern int errno_max
PARAMS (( void ));
80 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
83 extern const char * strerrno
PARAMS (( int ));
85 /* Given the name of an errno value, return the value. */
87 extern int strtoerrno
PARAMS (( const char *));
89 /* ANSI's strerror(), but more robust. */
91 extern char * xstrerror
PARAMS (( int ));
93 /* Return the maximum signal number for which strsignal will return a
96 extern int signo_max
PARAMS (( void ));
98 /* Return a signal message string for a signal number
99 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
100 /* This is commented out as it can conflict with one in system headers.
101 We still document its existence though. */
103 /*extern const char *strsignal PARAMS ((int));*/
105 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
108 extern const char * strsigno
PARAMS (( int ));
110 /* Given the name of a signal, return its number. */
112 extern int strtosigno
PARAMS (( const char *));
114 /* Register a function to be run by xexit. Returns 0 on success. */
116 extern int xatexit
PARAMS (( void (* fn
) ( void )));
118 /* Exit, calling all the functions registered with xatexit. */
120 extern void xexit
PARAMS (( int status
)) ATTRIBUTE_NORETURN
;
122 /* Set the program name used by xmalloc. */
124 extern void xmalloc_set_program_name
PARAMS (( const char *));
126 /* Allocate memory without fail. If malloc fails, this will print a
127 message to stderr (using the name set by xmalloc_set_program_name,
128 if any) and then call xexit. */
130 #ifdef ANSI_PROTOTYPES
131 /* Get a definition for size_t. */
133 /* Get a definition for va_list. */
136 extern PTR xmalloc
PARAMS (( size_t )) ATTRIBUTE_MALLOC
;
138 /* Reallocate memory without fail. This works like xmalloc. Note,
139 realloc type functions are not suitable for attribute malloc since
140 they may return the same address across multiple calls. */
142 extern PTR xrealloc
PARAMS (( PTR
, size_t ));
144 /* Allocate memory without fail and set it to zero. This works like
147 extern PTR xcalloc
PARAMS (( size_t , size_t )) ATTRIBUTE_MALLOC
;
149 /* Copy a string into a memory buffer without fail. */
151 extern char * xstrdup
PARAMS (( const char *)) ATTRIBUTE_MALLOC
;
153 /* Copy an existing memory buffer to a new memory buffer without fail. */
155 extern PTR xmemdup
PARAMS (( const PTR
, size_t , size_t )) ATTRIBUTE_MALLOC
;
157 /* hex character manipulation routines */
159 #define _hex_array_size 256
161 extern char _hex_value
[ _hex_array_size
];
162 extern void hex_init
PARAMS (( void ));
163 #define hex_p(c) (hex_value (c) != _hex_bad)
164 /* If you change this, note well: Some code relies on side effects in
165 the argument being performed exactly once. */
166 #define hex_value(c) (_hex_value[(unsigned char) (c)])
168 /* Definitions used by the pexecute routine. */
170 #define PEXECUTE_FIRST 1
171 #define PEXECUTE_LAST 2
172 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
173 #define PEXECUTE_SEARCH 4
174 #define PEXECUTE_VERBOSE 8
176 /* Execute a program. */
178 extern int pexecute
PARAMS (( const char *, char * const *, const char *,
179 const char *, char **, char **, int ));
181 /* Wait for pexecute to finish. */
183 extern int pwait
PARAMS (( int , int *, int ));
185 /* Like sprintf but provides a pointer to malloc'd storage, which must
186 be freed by the caller. */
188 extern int asprintf
PARAMS (( char **, const char *, ...)) ATTRIBUTE_PRINTF_2
;
190 /* Like vsprintf but provides a pointer to malloc'd storage, which
191 must be freed by the caller. */
193 extern int vasprintf
PARAMS (( char **, const char *, va_list ))
194 ATTRIBUTE_PRINTF ( 2 , 0 );
201 #endif /* ! defined (LIBIBERTY_H) */
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