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 */
32 extern char registers[];
34 /* Hook for `exec_file_command' command to call. */
36 void (*exec_file_display_hook) PARAMS ((char *)) = NULL;
38 /* Binary file diddling handle for the core file. */
43 /* Backward compatability with old way of specifying core files. */
46 core_file_command (filename, from_tty)
52 dont_repeat (); /* Either way, seems bogus. */
54 t = find_core_target ();
57 (t->to_detach) (filename, from_tty);
59 (t->to_open) (filename, from_tty);
61 error ("GDB can't read core files on this machine.");
65 /* Call this to specify the hook for exec_file_command to call back.
66 This is called from the x-window display code. */
69 specify_exec_file_hook (hook)
70 void (*hook) PARAMS ((char *));
72 exec_file_display_hook = hook;
75 /* The exec file must be closed before running an inferior.
76 If it is needed again after the inferior dies, it must
84 bfd_tempclose (exec_bfd);
93 bfd_reopen (exec_bfd);
97 /* If we have both a core file and an exec file,
98 print a warning if they don't go together. */
103 if (exec_bfd && core_bfd)
105 if (!core_file_matches_executable_p (core_bfd, exec_bfd))
106 warning ("core file may not match specified executable file.");
107 else if (bfd_get_mtime(exec_bfd) > bfd_get_mtime(core_bfd))
108 warning ("exec file is newer than core file.");
112 /* Return the name of the executable file as a string.
113 ERR nonzero means get error if there is none specified;
114 otherwise return 0 in that case. */
120 if (exec_bfd) return bfd_get_filename(exec_bfd);
121 if (!err) return NULL;
123 error ("No executable file specified.\n\
124 Use the \"file\" or \"exec-file\" command.");
129 /* Report a memory error with error(). */
132 memory_error (status, memaddr)
139 /* Actually, address between memaddr and memaddr + len
140 was out of bounds. */
141 error ("Cannot access memory at address %s.", local_hex_string(memaddr));
145 error ("Error accessing memory address %s: %s.",
146 local_hex_string (memaddr), safe_strerror (status));
150 /* Same as target_read_memory, but report an error if can't read. */
152 read_memory (memaddr, myaddr, len)
158 status = target_read_memory (memaddr, myaddr, len);
160 memory_error (status, memaddr);
163 /* Same as target_write_memory, but report an error if can't write. */
165 write_memory (memaddr, myaddr, len)
172 status = target_write_memory (memaddr, myaddr, len);
174 memory_error (status, memaddr);
177 /* Read an integer from debugged memory, given address and number of bytes. */
180 read_memory_integer (memaddr, len)
189 if (len == sizeof (char))
191 read_memory (memaddr, &cbuf, len);
194 if (len == sizeof (short))
196 read_memory (memaddr, (char *)&sbuf, len);
197 SWAP_TARGET_AND_HOST (&sbuf, sizeof (short));
200 if (len == sizeof (int))
202 read_memory (memaddr, (char *)&ibuf, len);
203 SWAP_TARGET_AND_HOST (&ibuf, sizeof (int));
206 if (len == sizeof (lbuf))
208 read_memory (memaddr, (char *)&lbuf, len);
209 SWAP_TARGET_AND_HOST (&lbuf, sizeof (lbuf));
212 error ("Cannot handle integers of %d bytes.", len);
213 return -1; /* for lint */
220 add_com ("core-file", class_files, core_file_command,
221 "Use FILE as core dump for examining memory and registers.\n\
222 No arg means have no core file. This command has been superseded by the\n\
223 `target core' and `detach' commands.");