[gcc.git] / include / libiberty.h

/* Function declarations for libiberty.
   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"

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

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

/* 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 **));


/* 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 *" */

#if defined(__GNU_LIBRARY__ ) || defined (__linux__)
extern char *basename PARAMS ((const char *));
#else
extern char *basename ();
#endif

/* Concatenate an arbitrary number of strings, up to (char *) NULL.
   Allocates memory using xmalloc.  */

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

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

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

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

extern long get_run_time PARAMS ((void));

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

extern char *choose_temp_base PARAMS ((void));

/* 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.  */

#ifndef __GNUC__
extern void xexit PARAMS ((int status));
#else
typedef void libiberty_voidfn PARAMS ((int status));
__volatile__ libiberty_voidfn xexit;
#endif

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

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

/* Allocate memory without fail.  If malloc fails, this will print a
   message to stderr (using the name set by xmalloc_set_program_name,
   if any) and then call xexit.  */

#ifdef ANSI_PROTOTYPES
/* Get a definition for size_t.  */
#include <stddef.h>
#endif
extern PTR xmalloc PARAMS ((size_t));

/* Reallocate memory without fail.  This works like xmalloc.

   FIXME: We do not declare the parameter types for the same reason as
   xmalloc.  */

extern PTR xrealloc PARAMS ((PTR, size_t));

/* Copy a string into a memory buffer without fail.  */

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

/* hex character manipulation routines */

#define _hex_array_size 256
#define _hex_bad	99
extern char _hex_value[_hex_array_size];
extern void hex_init PARAMS ((void));
#define hex_p(c)	(hex_value (c) != _hex_bad)
/* If you change this, note well: Some code relies on side effects in
   the argument being performed exactly once.  */
#define hex_value(c)	(_hex_value[(unsigned char) (c)])

/* Definitions used by the pexecute routine.  */

#define PEXECUTE_FIRST   1
#define PEXECUTE_LAST    2
#define PEXECUTE_ONE     (PEXECUTE_FIRST + PEXECUTE_LAST)
#define PEXECUTE_SEARCH  4
#define PEXECUTE_VERBOSE 8

/* Execute a program.  */

extern int pexecute PARAMS ((const char *, char * const *, const char *,
			    const char *, char **, char **, int));

/* Wait for pexecute to finish.  */

extern int pwait PARAMS ((int, int *, int));

#ifdef __cplusplus
}
#endif


#endif /* ! defined (LIBIBERTY_H) */
Commit	Line	Data
6599da04 JM	1	/* Function declarations for libiberty.
	2	Written by Cygnus Support, 1994.
	3
	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. */
	9
	10	#ifndef LIBIBERTY_H
	11	#define LIBIBERTY_H
	12
5a4917e5 JL	13	#ifdef __cplusplus
	14	extern "C" {
	15	#endif
	16
6599da04 JM	17	#include "ansidecl.h"
	18
	19	/* Build an argument vector from a string. Allocates memory using
	20	malloc. Use freeargv to free the vector. */
	21
	22	extern char *buildargv PARAMS ((char ));
	23
	24	/* Free a vector returned by buildargv. */
	25
	26	extern void freeargv PARAMS ((char **));
	27
5a4917e5 JL	28	/* Duplicate an argument vector. Allocates memory using malloc. Use
	29	freeargv to free the vector. */
	30
	31	extern char dupargv PARAMS ((char ));
	32
	33
6599da04 JM	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
	37	"const char " /
	38
	39	#if defined(__GNU_LIBRARY__ ) \|\| defined (__linux__)
	40	extern char basename PARAMS ((const char ));
	41	#else
	42	extern char *basename ();
	43	#endif
	44
	45	/* Concatenate an arbitrary number of strings, up to (char *) NULL.
	46	Allocates memory using xmalloc. */
	47
	48	extern char concat PARAMS ((const char , ...));
	49
	50	/* Check whether two file descriptors refer to the same file. */
	51
	52	extern int fdmatch PARAMS ((int fd1, int fd2));
	53
	54	/* Get the amount of time the process has run, in microseconds. */
	55
	56	extern long get_run_time PARAMS ((void));
	57
	58	/* Choose a temporary directory to use for scratch files. */
	59
	60	extern char *choose_temp_base PARAMS ((void));
	61
	62	/* Allocate memory filled with spaces. Allocates using malloc. */
	63
	64	extern const char *spaces PARAMS ((int count));
	65
	66	/* Return the maximum error number for which strerror will return a
	67	string. */
	68
	69	extern int errno_max PARAMS ((void));
	70
	71	/* Return the name of an errno value (e.g., strerrno (EINVAL) returns
	72	"EINVAL"). */
	73
	74	extern const char *strerrno PARAMS ((int));
	75
	76	/* Given the name of an errno value, return the value. */
	77
	78	extern int strtoerrno PARAMS ((const char *));
	79
	80	/* ANSI's strerror(), but more robust. */
	81
	82	extern char *xstrerror PARAMS ((int));
	83
	84	/* Return the maximum signal number for which strsignal will return a
	85	string. */
	86
	87	extern int signo_max PARAMS ((void));
	88
	89	/* Return a signal message string for a signal number
	90	(e.g., strsignal (SIGHUP) returns something like "Hangup"). */
	91	/* This is commented out as it can conflict with one in system headers.
	92	We still document its existence though. */
	93
	94	/extern const char strsignal PARAMS ((int));*/
	95
	96	/* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
	97	"SIGHUP"). */
98
99	extern const char *strsigno PARAMS ((int));
100
101	/* Given the name of a signal, return its number. */
102
103	extern int strtosigno PARAMS ((const char *));
104
105	/* Register a function to be run by xexit. Returns 0 on success. */
106
107	extern int xatexit PARAMS ((void (*fn) (void)));
108
109	/* Exit, calling all the functions registered with xatexit. */
110
111	#ifndef __GNUC__
112	extern void xexit PARAMS ((int status));
113	#else
114	typedef void libiberty_voidfn PARAMS ((int status));
115	__volatile__ libiberty_voidfn xexit;
116	#endif
117
118	/* Set the program name used by xmalloc. */
119
120	extern void xmalloc_set_program_name PARAMS ((const char *));
121
122	/* Allocate memory without fail. If malloc fails, this will print a
123	message to stderr (using the name set by xmalloc_set_program_name,
124	if any) and then call xexit. */
125
126	#ifdef ANSI_PROTOTYPES
127	/* Get a definition for size_t. */
128	#include <stddef.h>
129	#endif
130	extern PTR xmalloc PARAMS ((size_t));
131
132	/* Reallocate memory without fail. This works like xmalloc.
133
134	FIXME: We do not declare the parameter types for the same reason as
135	xmalloc. */
136
137	extern PTR xrealloc PARAMS ((PTR, size_t));
138
139	/* Copy a string into a memory buffer without fail. */
140
141	extern char xstrdup PARAMS ((const char ));
142
143	/* hex character manipulation routines */
144
145	#define _hex_array_size 256
146	#define _hex_bad 99
147	extern char _hex_value[_hex_array_size];
148	extern void hex_init PARAMS ((void));
149	#define hex_p(c) (hex_value (c) != _hex_bad)
150	/* If you change this, note well: Some code relies on side effects in
151	the argument being performed exactly once. */
152	#define hex_value(c) (_hex_value[(unsigned char) (c)])
153
154	/* Definitions used by the pexecute routine. */
155
156	#define PEXECUTE_FIRST 1
157	#define PEXECUTE_LAST 2
158	#define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
159	#define PEXECUTE_SEARCH 4
160	#define PEXECUTE_VERBOSE 8
161
162	/* Execute a program. */
163
164	extern int pexecute PARAMS ((const char , char const , const char ,
165	const char , char , char *, int));
166
167	/* Wait for pexecute to finish. */
168
169	extern int pwait PARAMS ((int, int *, int));
170
5a4917e5 JL	171	#ifdef __cplusplus
	172	}
	173	#endif
	174
	175
6599da04	176	#endif /* ! defined (LIBIBERTY_H) */