2 Copyright (C) 1986, 1987, 1989, 1991 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., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include <sys/param.h>
28 #include <sys/ioctl.h>
32 #include <sys/ptrace.h>
33 #define PTRACE_ATTACH PT_ATTACH
34 #define PTRACE_DETACH PT_FREEPROC
39 /* Work with core dump and executable files, for GDB.
40 This code would be in corefile.c if it weren't machine-dependent. */
43 core_file_command (char *filename, int from_tty)
47 /* Discard all vestiges of any previous core file
48 and mark data and stack spaces as empty. */
60 stack_start = STACK_END_ADDR;
61 stack_end = STACK_END_ADDR;
63 /* Now, if a new core file was specified, open it and digest it. */
67 filename = tilde_expand (filename);
68 make_cleanup (free, filename);
70 if (have_inferior_p ())
71 error ("To look at a core file, you must kill the program with \"kill\".");
72 corechan = open (filename, O_RDONLY, 0);
74 perror_with_name (filename);
75 /* 4.2-style (and perhaps also sysV-style) core dump file. */
80 val = myread (corechan, &u, sizeof u);
82 perror_with_name (filename);
83 data_start = exec_data_start;
85 data_end = data_start + u.pt_dsize;
86 stack_start = stack_end - u.pt_ssize;
87 data_offset = sizeof u;
88 stack_offset = data_offset + u.pt_dsize;
91 memcpy (&core_aouthdr, &u.pt_aouthdr, sizeof (AOUTHDR));
92 printf_unfiltered ("Core file is from \"%s\".\n", u.pt_comm);
94 printf_unfiltered ("Program terminated with signal %d, %s.\n",
95 u.pt_signal, safe_strsignal (u.pt_signal));
97 /* Read the register values out of the core file and store
98 them where `read_register' will find them. */
103 for (regno = 0; regno < NUM_REGS; regno++)
105 char buf[MAX_REGISTER_RAW_SIZE];
107 val = lseek (corechan, register_addr (regno, reg_offset), 0);
109 perror_with_name (filename);
111 val = myread (corechan, buf, sizeof buf);
113 perror_with_name (filename);
114 supply_register (regno, buf);
118 if (filename[0] == '/')
119 corefile = savestring (filename, strlen (filename));
122 corefile = concat (current_directory, "/", filename, NULL);
125 flush_cached_frames ();
126 select_frame (get_current_frame (), 0);
130 printf_unfiltered ("No core file now.\n");