Commit | Line | Data |
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c906108c | 1 | /* General utility routines for the remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002, 2003, |
0fb0cc75 | 3 | 2007, 2008, 2009 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "server.h" | |
21 | #include <stdio.h> | |
22 | #include <string.h> | |
68070c10 PA |
23 | #include <stdlib.h> |
24 | #if HAVE_ERRNO_H | |
25 | #include <errno.h> | |
26 | #endif | |
27 | #if HAVE_MALLOC_H | |
28 | #include <malloc.h> | |
29 | #endif | |
c906108c SS |
30 | |
31 | /* Generally useful subroutines used throughout the program. */ | |
32 | ||
bca929d3 DE |
33 | static void malloc_failure (size_t size) ATTR_NORETURN; |
34 | ||
35 | static void | |
36 | malloc_failure (size_t size) | |
37 | { | |
38 | fprintf (stderr, "gdbserver: ran out of memory while trying to allocate %lu bytes\n", | |
39 | (unsigned long) size); | |
40 | exit (1); | |
41 | } | |
42 | ||
43 | /* Allocate memory without fail. | |
44 | If malloc fails, this will print a message to stderr and exit. */ | |
45 | ||
46 | void * | |
47 | xmalloc (size_t size) | |
48 | { | |
49 | void *newmem; | |
50 | ||
51 | if (size == 0) | |
52 | size = 1; | |
53 | newmem = malloc (size); | |
54 | if (!newmem) | |
55 | malloc_failure (size); | |
56 | ||
57 | return newmem; | |
58 | } | |
59 | ||
60 | /* Allocate memory without fail and set it to zero. | |
61 | If malloc fails, this will print a message to stderr and exit. */ | |
62 | ||
63 | void * | |
64 | xcalloc (size_t nelem, size_t elsize) | |
65 | { | |
66 | void *newmem; | |
67 | ||
68 | if (nelem == 0 || elsize == 0) | |
69 | nelem = elsize = 1; | |
70 | ||
71 | newmem = calloc (nelem, elsize); | |
72 | if (!newmem) | |
73 | malloc_failure (nelem * elsize); | |
74 | ||
75 | return newmem; | |
76 | } | |
77 | ||
78 | /* Copy a string into a memory buffer. | |
79 | If malloc fails, this will print a message to stderr and exit. */ | |
80 | ||
81 | char * | |
82 | xstrdup (const char *s) | |
83 | { | |
84 | char *ret = strdup (s); | |
85 | if (ret == NULL) | |
86 | malloc_failure (strlen (s) + 1); | |
87 | return ret; | |
88 | } | |
89 | ||
c906108c SS |
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. */ | |
93 | ||
94 | void | |
54363045 | 95 | perror_with_name (const char *string) |
c906108c | 96 | { |
5c44784c | 97 | const char *err; |
c906108c SS |
98 | char *combined; |
99 | ||
43d5792c DJ |
100 | err = strerror (errno); |
101 | if (err == NULL) | |
c906108c SS |
102 | err = "unknown error"; |
103 | ||
104 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
105 | strcpy (combined, string); | |
106 | strcat (combined, ": "); | |
107 | strcat (combined, err); | |
108 | ||
109 | error ("%s.", combined); | |
110 | } | |
111 | ||
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. */ | |
115 | ||
0729219d | 116 | void |
c5aa993b | 117 | error (const char *string,...) |
c906108c SS |
118 | { |
119 | extern jmp_buf toplevel; | |
120 | va_list args; | |
c906108c | 121 | va_start (args, string); |
c906108c | 122 | fflush (stdout); |
c906108c | 123 | vfprintf (stderr, string, args); |
c906108c | 124 | fprintf (stderr, "\n"); |
c5aa993b | 125 | longjmp (toplevel, 1); |
c906108c SS |
126 | } |
127 | ||
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. */ | |
131 | ||
132 | /* VARARGS */ | |
0729219d | 133 | void |
0a30fbc4 | 134 | fatal (const char *string,...) |
c906108c SS |
135 | { |
136 | va_list args; | |
c906108c | 137 | va_start (args, string); |
24a09b5f | 138 | fprintf (stderr, "gdbserver: "); |
c906108c SS |
139 | vfprintf (stderr, string, args); |
140 | fprintf (stderr, "\n"); | |
141 | va_end (args); | |
142 | exit (1); | |
143 | } | |
0a30fbc4 DJ |
144 | |
145 | /* VARARGS */ | |
146 | void | |
147 | warning (const char *string,...) | |
148 | { | |
149 | va_list args; | |
150 | va_start (args, string); | |
24a09b5f | 151 | fprintf (stderr, "gdbserver: "); |
0a30fbc4 DJ |
152 | vfprintf (stderr, string, args); |
153 | fprintf (stderr, "\n"); | |
154 | va_end (args); | |
155 | } |