36c9ab5e75a05e3319e0117d156732e9c65ab006
1 /* Core dump and executable file functions above target vector, for GDB.
2 Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 #include "frame.h" /* required by inferior.h */
34 extern char registers
[];
36 /* Hook for `exec_file_command' command to call. */
38 void (*exec_file_display_hook
) PARAMS ((char *)) = NULL
;
40 /* Binary file diddling handle for the core file. */
45 /* Backward compatability with old way of specifying core files. */
48 core_file_command (filename
, from_tty
)
54 dont_repeat (); /* Either way, seems bogus. */
56 t
= find_core_target ();
59 (t
->to_detach
) (filename
, from_tty
);
61 (t
->to_open
) (filename
, from_tty
);
63 error ("GDB can't read core files on this machine.");
67 /* Call this to specify the hook for exec_file_command to call back.
68 This is called from the x-window display code. */
71 specify_exec_file_hook (hook
)
72 void (*hook
) PARAMS ((char *));
74 exec_file_display_hook
= hook
;
77 /* The exec file must be closed before running an inferior.
78 If it is needed again after the inferior dies, it must
86 bfd_tempclose (exec_bfd
);
95 bfd_reopen (exec_bfd
);
99 /* If we have both a core file and an exec file,
100 print a warning if they don't go together. */
105 if (exec_bfd
&& core_bfd
)
107 if (!core_file_matches_executable_p (core_bfd
, exec_bfd
))
108 warning ("core file may not match specified executable file.");
109 else if (bfd_get_mtime(exec_bfd
) > bfd_get_mtime(core_bfd
))
110 warning ("exec file is newer than core file.");
114 /* Return the name of the executable file as a string.
115 ERR nonzero means get error if there is none specified;
116 otherwise return 0 in that case. */
122 if (exec_bfd
) return bfd_get_filename(exec_bfd
);
123 if (!err
) return NULL
;
125 error ("No executable file specified.\n\
126 Use the \"file\" or \"exec-file\" command.");
131 /* Report a memory error with error(). */
134 memory_error (status
, memaddr
)
141 /* Actually, address between memaddr and memaddr + len
142 was out of bounds. */
143 error ("Cannot access memory at address %s.",
144 local_hex_string((unsigned long) memaddr
));
148 error ("Error accessing memory address %s: %s.",
149 local_hex_string ((unsigned long) memaddr
),
150 safe_strerror (status
));
154 /* Same as target_read_memory, but report an error if can't read. */
156 read_memory (memaddr
, myaddr
, len
)
162 status
= target_read_memory (memaddr
, myaddr
, len
);
164 memory_error (status
, memaddr
);
167 /* Like target_read_memory, but slightly different parameters. */
170 dis_asm_read_memory (memaddr
, myaddr
, len
, info
)
174 disassemble_info
*info
;
176 return target_read_memory (memaddr
, (char *) myaddr
, len
);
179 /* Like memory_error with slightly different parameters. */
181 dis_asm_memory_error (status
, memaddr
, info
)
184 disassemble_info
*info
;
186 memory_error (status
, memaddr
);
189 /* Like print_address with slightly different parameters. */
191 dis_asm_print_address (addr
, info
)
193 struct disassemble_info
*info
;
195 print_address (addr
, info
->stream
);
198 /* Same as target_write_memory, but report an error if can't write. */
200 write_memory (memaddr
, myaddr
, len
)
207 status
= target_write_memory (memaddr
, myaddr
, len
);
209 memory_error (status
, memaddr
);
212 /* Read an integer from debugged memory, given address and number of bytes. */
215 read_memory_integer (memaddr
, len
)
219 char buf
[sizeof (LONGEST
)];
221 read_memory (memaddr
, buf
, len
);
222 return extract_signed_integer (buf
, len
);
226 read_memory_unsigned_integer (memaddr
, len
)
230 char buf
[sizeof (unsigned LONGEST
)];
232 read_memory (memaddr
, buf
, len
);
233 return extract_unsigned_integer (buf
, len
);
236 /* The current default bfd target. Points to storage allocated for
240 /* Same thing, except it is "auto" not NULL for the default case. */
241 static char *gnutarget_string
;
243 static void set_gnutarget_command
244 PARAMS ((char *, int, struct cmd_list_element
*));
247 set_gnutarget_command (ignore
, from_tty
, c
)
250 struct cmd_list_element
*c
;
252 if (STREQ (gnutarget_string
, "auto"))
255 gnutarget
= gnutarget_string
;
258 /* Set the gnutarget. */
260 set_gnutarget (newtarget
)
263 if (gnutarget_string
!= NULL
)
264 free (gnutarget_string
);
265 gnutarget_string
= savestring (newtarget
, strlen (newtarget
));
266 set_gnutarget_command (NULL
, 0, NULL
);
272 struct cmd_list_element
*c
;
273 c
= add_cmd ("core-file", class_files
, core_file_command
,
274 "Use FILE as core dump for examining memory and registers.\n\
275 No arg means have no core file. This command has been superseded by the\n\
276 `target core' and `detach' commands.", &cmdlist
);
277 c
->completer
= filename_completer
;
279 c
= add_set_cmd ("gnutarget", class_files
, var_string_noescape
,
280 (char *) &gnutarget_string
,
281 "Set the current BFD target.\n\
282 Use `set gnutarget auto' to specify automatic detection.",
284 c
->function
.sfunc
= set_gnutarget_command
;
285 add_show_from_set (c
, &showlist
);
287 if (getenv ("GNUTARGET"))
288 set_gnutarget (getenv ("GNUTARGET"));
290 set_gnutarget ("auto");