1 /* General utility routines for the remote server for GDB.
2 Copyright (C) 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002, 2003,
3 2007, 2008, 2009 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
31 /* Generally useful subroutines used throughout the program. */
33 static void malloc_failure (size_t size
) ATTR_NORETURN
;
36 malloc_failure (size_t size
)
38 fprintf (stderr
, "gdbserver: ran out of memory while trying to allocate %lu bytes\n",
39 (unsigned long) size
);
43 /* Allocate memory without fail.
44 If malloc fails, this will print a message to stderr and exit. */
53 newmem
= malloc (size
);
55 malloc_failure (size
);
60 /* Allocate memory without fail and set it to zero.
61 If malloc fails, this will print a message to stderr and exit. */
64 xcalloc (size_t nelem
, size_t elsize
)
68 if (nelem
== 0 || elsize
== 0)
71 newmem
= calloc (nelem
, elsize
);
73 malloc_failure (nelem
* elsize
);
78 /* Copy a string into a memory buffer.
79 If malloc fails, this will print a message to stderr and exit. */
82 xstrdup (const char *s
)
84 char *ret
= strdup (s
);
86 malloc_failure (strlen (s
) + 1);
90 /* Print the system error message for errno, and also mention STRING
91 as the file name for which the error was encountered.
92 Then return to command level. */
95 perror_with_name (const char *string
)
100 err
= strerror (errno
);
102 err
= "unknown error";
104 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
105 strcpy (combined
, string
);
106 strcat (combined
, ": ");
107 strcat (combined
, err
);
109 error ("%s.", combined
);
112 /* Print an error message and return to command level.
113 STRING is the error message, used as a fprintf string,
114 and ARG is passed as an argument to it. */
117 error (const char *string
,...)
119 extern jmp_buf toplevel
;
121 va_start (args
, string
);
123 vfprintf (stderr
, string
, args
);
124 fprintf (stderr
, "\n");
125 longjmp (toplevel
, 1);
128 /* Print an error message and exit reporting failure.
129 This is for a error that we cannot continue from.
130 STRING and ARG are passed to fprintf. */
134 fatal (const char *string
,...)
137 va_start (args
, string
);
138 fprintf (stderr
, "gdbserver: ");
139 vfprintf (stderr
, string
, args
);
140 fprintf (stderr
, "\n");
147 warning (const char *string
,...)
150 va_start (args
, string
);
151 fprintf (stderr
, "gdbserver: ");
152 vfprintf (stderr
, string
, args
);
153 fprintf (stderr
, "\n");
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