Commit | Line | Data |
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c906108c | 1 | /* General utility routines for the remote server for GDB. |
0b302171 JB |
2 | Copyright (C) 1986, 1989, 1993, 1995-1997, 1999-2000, 2002-2003, |
3 | 2007-2012 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 | |
c906108c | 27 | |
fa593d66 PA |
28 | #ifdef IN_PROCESS_AGENT |
29 | # define PREFIX "ipa: " | |
30 | # define TOOLNAME "GDBserver in-process agent" | |
31 | #else | |
32 | # define PREFIX "gdbserver: " | |
33 | # define TOOLNAME "GDBserver" | |
34 | #endif | |
35 | ||
c906108c SS |
36 | /* Generally useful subroutines used throughout the program. */ |
37 | ||
d26e3629 KY |
38 | void |
39 | malloc_failure (long size) | |
bca929d3 | 40 | { |
493e2a69 MS |
41 | fprintf (stderr, |
42 | PREFIX "ran out of memory while trying to allocate %lu bytes\n", | |
bca929d3 DE |
43 | (unsigned long) size); |
44 | exit (1); | |
45 | } | |
46 | ||
bca929d3 DE |
47 | /* Copy a string into a memory buffer. |
48 | If malloc fails, this will print a message to stderr and exit. */ | |
49 | ||
50 | char * | |
51 | xstrdup (const char *s) | |
52 | { | |
53 | char *ret = strdup (s); | |
54 | if (ret == NULL) | |
55 | malloc_failure (strlen (s) + 1); | |
56 | return ret; | |
57 | } | |
58 | ||
fa593d66 PA |
59 | #ifndef IN_PROCESS_AGENT |
60 | ||
aef93bd7 DE |
61 | /* Free a standard argv vector. */ |
62 | ||
63 | void | |
64 | freeargv (char **vector) | |
65 | { | |
66 | char **scan; | |
67 | ||
68 | if (vector != NULL) | |
69 | { | |
70 | for (scan = vector; *scan != NULL; scan++) | |
71 | { | |
72 | free (*scan); | |
73 | } | |
74 | free (vector); | |
75 | } | |
76 | } | |
77 | ||
fa593d66 PA |
78 | #endif |
79 | ||
c906108c SS |
80 | /* Print the system error message for errno, and also mention STRING |
81 | as the file name for which the error was encountered. | |
82 | Then return to command level. */ | |
83 | ||
84 | void | |
54363045 | 85 | perror_with_name (const char *string) |
c906108c | 86 | { |
5c44784c | 87 | const char *err; |
c906108c SS |
88 | char *combined; |
89 | ||
43d5792c DJ |
90 | err = strerror (errno); |
91 | if (err == NULL) | |
c906108c SS |
92 | err = "unknown error"; |
93 | ||
94 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
95 | strcpy (combined, string); | |
96 | strcat (combined, ": "); | |
97 | strcat (combined, err); | |
98 | ||
99 | error ("%s.", combined); | |
100 | } | |
101 | ||
102 | /* Print an error message and return to command level. | |
103 | STRING is the error message, used as a fprintf string, | |
104 | and ARG is passed as an argument to it. */ | |
105 | ||
0729219d | 106 | void |
c5aa993b | 107 | error (const char *string,...) |
c906108c | 108 | { |
fa593d66 | 109 | #ifndef IN_PROCESS_AGENT |
c906108c | 110 | extern jmp_buf toplevel; |
fa593d66 | 111 | #endif |
c906108c | 112 | va_list args; |
c906108c | 113 | va_start (args, string); |
c906108c | 114 | fflush (stdout); |
c906108c | 115 | vfprintf (stderr, string, args); |
c906108c | 116 | fprintf (stderr, "\n"); |
fa593d66 | 117 | #ifndef IN_PROCESS_AGENT |
c5aa993b | 118 | longjmp (toplevel, 1); |
fa593d66 PA |
119 | #else |
120 | exit (1); | |
121 | #endif | |
c906108c SS |
122 | } |
123 | ||
124 | /* Print an error message and exit reporting failure. | |
125 | This is for a error that we cannot continue from. | |
126 | STRING and ARG are passed to fprintf. */ | |
127 | ||
128 | /* VARARGS */ | |
0729219d | 129 | void |
0a30fbc4 | 130 | fatal (const char *string,...) |
c906108c SS |
131 | { |
132 | va_list args; | |
c906108c | 133 | va_start (args, string); |
fa593d66 | 134 | fprintf (stderr, PREFIX); |
c906108c SS |
135 | vfprintf (stderr, string, args); |
136 | fprintf (stderr, "\n"); | |
137 | va_end (args); | |
138 | exit (1); | |
139 | } | |
0a30fbc4 DJ |
140 | |
141 | /* VARARGS */ | |
142 | void | |
143 | warning (const char *string,...) | |
144 | { | |
145 | va_list args; | |
146 | va_start (args, string); | |
fa593d66 | 147 | fprintf (stderr, PREFIX); |
0a30fbc4 DJ |
148 | vfprintf (stderr, string, args); |
149 | fprintf (stderr, "\n"); | |
150 | va_end (args); | |
151 | } | |
aa5ca48f | 152 | |
e92d13d5 PA |
153 | /* Report a problem internal to GDBserver, and exit. */ |
154 | ||
155 | void | |
156 | internal_error (const char *file, int line, const char *fmt, ...) | |
157 | { | |
158 | va_list args; | |
159 | va_start (args, fmt); | |
160 | ||
161 | fprintf (stderr, "\ | |
fa593d66 | 162 | %s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line); |
e92d13d5 PA |
163 | vfprintf (stderr, fmt, args); |
164 | fprintf (stderr, "\n"); | |
165 | va_end (args); | |
166 | exit (1); | |
167 | } | |
168 | ||
aa5ca48f | 169 | /* Temporary storage using circular buffer. */ |
fa593d66 | 170 | #define NUMCELLS 10 |
aa5ca48f DE |
171 | #define CELLSIZE 50 |
172 | ||
173 | /* Return the next entry in the circular buffer. */ | |
174 | ||
175 | static char * | |
176 | get_cell (void) | |
177 | { | |
178 | static char buf[NUMCELLS][CELLSIZE]; | |
179 | static int cell = 0; | |
180 | if (++cell >= NUMCELLS) | |
181 | cell = 0; | |
182 | return buf[cell]; | |
183 | } | |
184 | ||
219f2f23 | 185 | static char * |
238f1c74 | 186 | decimal2str (char *sign, ULONGEST addr) |
219f2f23 PA |
187 | { |
188 | /* Steal code from valprint.c:print_decimal(). Should this worry | |
189 | about the real size of addr as the above does? */ | |
190 | unsigned long temp[3]; | |
191 | char *str = get_cell (); | |
219f2f23 | 192 | int i = 0; |
9f72fee2 | 193 | int width = 9; |
238f1c74 | 194 | |
219f2f23 PA |
195 | do |
196 | { | |
197 | temp[i] = addr % (1000 * 1000 * 1000); | |
198 | addr /= (1000 * 1000 * 1000); | |
199 | i++; | |
219f2f23 PA |
200 | } |
201 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
202 | ||
219f2f23 PA |
203 | switch (i) |
204 | { | |
205 | case 1: | |
206 | xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]); | |
207 | break; | |
208 | case 2: | |
209 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width, | |
210 | temp[1], temp[0]); | |
211 | break; | |
212 | case 3: | |
213 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width, | |
214 | temp[2], temp[1], temp[0]); | |
215 | break; | |
216 | default: | |
217 | internal_error (__FILE__, __LINE__, | |
218 | "failed internal consistency check"); | |
219 | } | |
220 | ||
221 | return str; | |
222 | } | |
223 | ||
224 | /* %u for ULONGEST. The result is stored in a circular static buffer, | |
225 | NUMCELLS deep. */ | |
226 | ||
227 | char * | |
228 | pulongest (ULONGEST u) | |
229 | { | |
238f1c74 | 230 | return decimal2str ("", u); |
219f2f23 PA |
231 | } |
232 | ||
233 | /* %d for LONGEST. The result is stored in a circular static buffer, | |
234 | NUMCELLS deep. */ | |
235 | ||
236 | char * | |
237 | plongest (LONGEST l) | |
238 | { | |
239 | if (l < 0) | |
238f1c74 | 240 | return decimal2str ("-", -l); |
219f2f23 | 241 | else |
238f1c74 | 242 | return decimal2str ("", l); |
219f2f23 PA |
243 | } |
244 | ||
245 | /* Eliminate warning from compiler on 32-bit systems. */ | |
246 | static int thirty_two = 32; | |
247 | ||
248 | /* Convert a ULONGEST into a HEX string, like %lx. The result is | |
249 | stored in a circular static buffer, NUMCELLS deep. */ | |
250 | ||
251 | char * | |
252 | phex_nz (ULONGEST l, int sizeof_l) | |
253 | { | |
254 | char *str; | |
255 | ||
256 | switch (sizeof_l) | |
257 | { | |
258 | case 8: | |
259 | { | |
260 | unsigned long high = (unsigned long) (l >> thirty_two); | |
261 | str = get_cell (); | |
262 | if (high == 0) | |
263 | xsnprintf (str, CELLSIZE, "%lx", | |
264 | (unsigned long) (l & 0xffffffff)); | |
265 | else | |
266 | xsnprintf (str, CELLSIZE, "%lx%08lx", high, | |
267 | (unsigned long) (l & 0xffffffff)); | |
268 | break; | |
269 | } | |
270 | case 4: | |
271 | str = get_cell (); | |
272 | xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l); | |
273 | break; | |
274 | case 2: | |
275 | str = get_cell (); | |
276 | xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff)); | |
277 | break; | |
278 | default: | |
279 | str = phex_nz (l, sizeof (l)); | |
280 | break; | |
281 | } | |
282 | ||
283 | return str; | |
284 | } | |
5c3216e2 OS |
285 | |
286 | /* Convert a CORE_ADDR into a HEX string, like %lx. | |
287 | The result is stored in a circular static buffer, NUMCELLS deep. */ | |
288 | ||
289 | char * | |
290 | paddress (CORE_ADDR addr) | |
291 | { | |
292 | return phex_nz (addr, sizeof (CORE_ADDR)); | |
293 | } | |
ec48365d PA |
294 | |
295 | /* Convert a file descriptor into a printable string. */ | |
296 | ||
297 | char * | |
298 | pfildes (gdb_fildes_t fd) | |
299 | { | |
300 | #if USE_WIN32API | |
301 | return phex_nz (fd, sizeof (gdb_fildes_t)); | |
302 | #else | |
303 | return plongest (fd); | |
304 | #endif | |
305 | } |