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, 2010 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 #ifdef IN_PROCESS_AGENT
32 # define PREFIX "ipa: "
33 # define TOOLNAME "GDBserver in-process agent"
35 # define PREFIX "gdbserver: "
36 # define TOOLNAME "GDBserver"
39 /* Generally useful subroutines used throughout the program. */
41 static void malloc_failure (size_t size
) ATTR_NORETURN
;
44 malloc_failure (size_t size
)
46 fprintf (stderr
, PREFIX
"ran out of memory while trying to allocate %lu bytes\n",
47 (unsigned long) size
);
51 /* Allocate memory without fail.
52 If malloc fails, this will print a message to stderr and exit. */
61 newmem
= malloc (size
);
63 malloc_failure (size
);
68 /* Reallocate memory without fail. This works like xmalloc. */
71 xrealloc (void *ptr
, size_t size
)
79 val
= realloc (ptr
, size
); /* OK: realloc */
81 val
= malloc (size
); /* OK: malloc */
83 malloc_failure (size
);
88 /* Allocate memory without fail and set it to zero.
89 If malloc fails, this will print a message to stderr and exit. */
92 xcalloc (size_t nelem
, size_t elsize
)
96 if (nelem
== 0 || elsize
== 0)
99 newmem
= calloc (nelem
, elsize
);
101 malloc_failure (nelem
* elsize
);
106 /* Copy a string into a memory buffer.
107 If malloc fails, this will print a message to stderr and exit. */
110 xstrdup (const char *s
)
112 char *ret
= strdup (s
);
114 malloc_failure (strlen (s
) + 1);
118 #ifndef IN_PROCESS_AGENT
120 /* Free a standard argv vector. */
123 freeargv (char **vector
)
129 for (scan
= vector
; *scan
!= NULL
; scan
++)
139 /* Print the system error message for errno, and also mention STRING
140 as the file name for which the error was encountered.
141 Then return to command level. */
144 perror_with_name (const char *string
)
149 err
= strerror (errno
);
151 err
= "unknown error";
153 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
154 strcpy (combined
, string
);
155 strcat (combined
, ": ");
156 strcat (combined
, err
);
158 error ("%s.", combined
);
161 /* Print an error message and return to command level.
162 STRING is the error message, used as a fprintf string,
163 and ARG is passed as an argument to it. */
166 error (const char *string
,...)
168 #ifndef IN_PROCESS_AGENT
169 extern jmp_buf toplevel
;
172 va_start (args
, string
);
174 vfprintf (stderr
, string
, args
);
175 fprintf (stderr
, "\n");
176 #ifndef IN_PROCESS_AGENT
177 longjmp (toplevel
, 1);
183 /* Print an error message and exit reporting failure.
184 This is for a error that we cannot continue from.
185 STRING and ARG are passed to fprintf. */
189 fatal (const char *string
,...)
192 va_start (args
, string
);
193 fprintf (stderr
, PREFIX
);
194 vfprintf (stderr
, string
, args
);
195 fprintf (stderr
, "\n");
202 warning (const char *string
,...)
205 va_start (args
, string
);
206 fprintf (stderr
, PREFIX
);
207 vfprintf (stderr
, string
, args
);
208 fprintf (stderr
, "\n");
212 /* Report a problem internal to GDBserver, and exit. */
215 internal_error (const char *file
, int line
, const char *fmt
, ...)
218 va_start (args
, fmt
);
221 %s:%d: A problem internal to " TOOLNAME
" has been detected.\n", file
, line
);
222 vfprintf (stderr
, fmt
, args
);
223 fprintf (stderr
, "\n");
228 /* Temporary storage using circular buffer. */
232 /* Return the next entry in the circular buffer. */
237 static char buf
[NUMCELLS
][CELLSIZE
];
239 if (++cell
>= NUMCELLS
)
244 /* Stdarg wrapper around vsnprintf.
245 SIZE is the size of the buffer pointed to by STR. */
248 xsnprintf (char *str
, size_t size
, const char *format
, ...)
253 va_start (args
, format
);
254 ret
= vsnprintf (str
, size
, format
, args
);
261 decimal2str (char *sign
, ULONGEST addr
, int width
)
263 /* Steal code from valprint.c:print_decimal(). Should this worry
264 about the real size of addr as the above does? */
265 unsigned long temp
[3];
266 char *str
= get_cell ();
271 temp
[i
] = addr
% (1000 * 1000 * 1000);
272 addr
/= (1000 * 1000 * 1000);
276 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
285 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
288 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
292 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
293 temp
[2], temp
[1], temp
[0]);
296 internal_error (__FILE__
, __LINE__
,
297 "failed internal consistency check");
303 /* %u for ULONGEST. The result is stored in a circular static buffer,
307 pulongest (ULONGEST u
)
309 return decimal2str ("", u
, 0);
312 /* %d for LONGEST. The result is stored in a circular static buffer,
319 return decimal2str ("-", -l
, 0);
321 return decimal2str ("", l
, 0);
324 /* Eliminate warning from compiler on 32-bit systems. */
325 static int thirty_two
= 32;
327 /* Convert a ULONGEST into a HEX string, like %lx. The result is
328 stored in a circular static buffer, NUMCELLS deep. */
331 phex_nz (ULONGEST l
, int sizeof_l
)
339 unsigned long high
= (unsigned long) (l
>> thirty_two
);
342 xsnprintf (str
, CELLSIZE
, "%lx",
343 (unsigned long) (l
& 0xffffffff));
345 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
346 (unsigned long) (l
& 0xffffffff));
351 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
355 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
358 str
= phex_nz (l
, sizeof (l
));
365 /* Convert a CORE_ADDR into a HEX string, like %lx.
366 The result is stored in a circular static buffer, NUMCELLS deep. */
369 paddress (CORE_ADDR addr
)
371 return phex_nz (addr
, sizeof (CORE_ADDR
));
374 /* Convert a file descriptor into a printable string. */
377 pfildes (gdb_fildes_t fd
)
380 return phex_nz (fd
, sizeof (gdb_fildes_t
));
382 return plongest (fd
);