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 /* Free a standard argv vector. */
93 freeargv (char **vector)
99 for (scan = vector; *scan != NULL; scan++)
107 /* Print the system error message for errno, and also mention STRING
108 as the file name for which the error was encountered.
109 Then return to command level. */
112 perror_with_name (const char *string)
117 err = strerror (errno);
119 err = "unknown error";
121 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
122 strcpy (combined, string);
123 strcat (combined, ": ");
124 strcat (combined, err);
126 error ("%s.", combined);
129 /* Print an error message and return to command level.
130 STRING is the error message, used as a fprintf string,
131 and ARG is passed as an argument to it. */
134 error (const char *string,...)
136 extern jmp_buf toplevel;
138 va_start (args, string);
140 vfprintf (stderr, string, args);
141 fprintf (stderr, "\n");
142 longjmp (toplevel, 1);
145 /* Print an error message and exit reporting failure.
146 This is for a error that we cannot continue from.
147 STRING and ARG are passed to fprintf. */
151 fatal (const char *string,...)
154 va_start (args, string);
155 fprintf (stderr, "gdbserver: ");
156 vfprintf (stderr, string, args);
157 fprintf (stderr, "\n");
164 warning (const char *string,...)
167 va_start (args, string);
168 fprintf (stderr, "gdbserver: ");
169 vfprintf (stderr, string, args);
170 fprintf (stderr, "\n");