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.", local_hex_string(memaddr
));
147 error ("Error accessing memory address %s: %s.",
148 local_hex_string (memaddr
), safe_strerror (status
));
152 /* Same as target_read_memory, but report an error if can't read. */
154 read_memory (memaddr
, myaddr
, len
)
160 status
= target_read_memory (memaddr
, myaddr
, len
);
162 memory_error (status
, memaddr
);
165 /* Like target_read_memory, but slightly different parameters. */
168 dis_asm_read_memory (memaddr
, myaddr
, len
, info
)
172 disassemble_info
*info
;
174 return target_read_memory (memaddr
, (char *) myaddr
, len
);
177 /* Like memory_error with slightly different parameters. */
179 dis_asm_memory_error (status
, memaddr
, info
)
182 disassemble_info
*info
;
184 memory_error (status
, memaddr
);
187 /* Like print_address with slightly different parameters. */
189 dis_asm_print_address (addr
, info
)
191 struct disassemble_info
*info
;
193 print_address (addr
, info
->stream
);
196 /* Same as target_write_memory, but report an error if can't write. */
198 write_memory (memaddr
, myaddr
, len
)
205 status
= target_write_memory (memaddr
, myaddr
, len
);
207 memory_error (status
, memaddr
);
210 /* Read an integer from debugged memory, given address and number of bytes. */
213 read_memory_integer (memaddr
, len
)
222 if (len
== sizeof (char))
224 read_memory (memaddr
, &cbuf
, len
);
227 if (len
== sizeof (short))
229 read_memory (memaddr
, (char *)&sbuf
, len
);
230 SWAP_TARGET_AND_HOST (&sbuf
, sizeof (short));
233 if (len
== sizeof (int))
235 read_memory (memaddr
, (char *)&ibuf
, len
);
236 SWAP_TARGET_AND_HOST (&ibuf
, sizeof (int));
239 if (len
== sizeof (lbuf
))
241 read_memory (memaddr
, (char *)&lbuf
, len
);
242 SWAP_TARGET_AND_HOST (&lbuf
, sizeof (lbuf
));
245 error ("Cannot handle integers of %d bytes.", len
);
246 return -1; /* for lint */
251 read_memory_unsigned_integer (memaddr
, len
)
260 if (len
== sizeof (char))
262 read_memory (memaddr
, &cbuf
, len
);
265 if (len
== sizeof (short))
267 read_memory (memaddr
, (char *)&sbuf
, len
);
268 SWAP_TARGET_AND_HOST (&sbuf
, sizeof (short));
271 if (len
== sizeof (int))
273 read_memory (memaddr
, (char *)&ibuf
, len
);
274 SWAP_TARGET_AND_HOST (&ibuf
, sizeof (int));
277 if (len
== sizeof (lbuf
))
279 read_memory (memaddr
, (char *)&lbuf
, len
);
280 SWAP_TARGET_AND_HOST (&lbuf
, sizeof (lbuf
));
283 error ("Cannot handle unsigned integers of %d bytes.", len
);
284 return -1; /* for lint */
290 struct cmd_list_element
*c
;
291 c
= add_cmd ("core-file", class_files
, core_file_command
,
292 "Use FILE as core dump for examining memory and registers.\n\
293 No arg means have no core file. This command has been superseded by the\n\
294 `target core' and `detach' commands.", &cmdlist
);
295 c
->completer
= filename_completer
;
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