| /* umax host stuff. |
| Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "frame.h" |
| #include "inferior.h" |
| |
| #include <sys/param.h> |
| #include <sys/dir.h> |
| #include <signal.h> |
| #include <sys/ioctl.h> |
| #include <fcntl.h> |
| |
| #include "gdbcore.h" |
| #include <sys/ptrace.h> |
| #define PTRACE_ATTACH PT_ATTACH |
| #define PTRACE_DETACH PT_FREEPROC |
| |
| #include <sys/file.h> |
| #include "gdb_stat.h" |
| |
| /* Work with core dump and executable files, for GDB. |
| This code would be in corefile.c if it weren't machine-dependent. */ |
| |
| void |
| core_file_command (filename, from_tty) |
| char *filename; |
| int from_tty; |
| { |
| int val; |
| |
| /* Discard all vestiges of any previous core file |
| and mark data and stack spaces as empty. */ |
| |
| if (corefile) |
| free (corefile); |
| corefile = 0; |
| |
| if (corechan >= 0) |
| close (corechan); |
| corechan = -1; |
| |
| data_start = 0; |
| data_end = 0; |
| stack_start = STACK_END_ADDR; |
| stack_end = STACK_END_ADDR; |
| |
| /* Now, if a new core file was specified, open it and digest it. */ |
| |
| if (filename) |
| { |
| filename = tilde_expand (filename); |
| make_cleanup (free, filename); |
| |
| if (have_inferior_p ()) |
| error ("To look at a core file, you must kill the program with \"kill\"."); |
| corechan = open (filename, O_RDONLY, 0); |
| if (corechan < 0) |
| perror_with_name (filename); |
| /* 4.2-style (and perhaps also sysV-style) core dump file. */ |
| { |
| struct ptrace_user u; |
| int reg_offset; |
| |
| val = myread (corechan, &u, sizeof u); |
| if (val < 0) |
| perror_with_name (filename); |
| data_start = exec_data_start; |
| |
| data_end = data_start + u.pt_dsize; |
| stack_start = stack_end - u.pt_ssize; |
| data_offset = sizeof u; |
| stack_offset = data_offset + u.pt_dsize; |
| reg_offset = 0; |
| |
| memcpy (&core_aouthdr, &u.pt_aouthdr, sizeof (AOUTHDR)); |
| printf_unfiltered ("Core file is from \"%s\".\n", u.pt_comm); |
| if (u.pt_signal > 0) |
| printf_unfiltered ("Program terminated with signal %d, %s.\n", |
| u.pt_signal, safe_strsignal (u.pt_signal)); |
| |
| /* Read the register values out of the core file and store |
| them where `read_register' will find them. */ |
| |
| { |
| register int regno; |
| |
| for (regno = 0; regno < NUM_REGS; regno++) |
| { |
| char buf[MAX_REGISTER_RAW_SIZE]; |
| |
| val = lseek (corechan, register_addr (regno, reg_offset), 0); |
| if (val < 0) |
| perror_with_name (filename); |
| |
| val = myread (corechan, buf, sizeof buf); |
| if (val < 0) |
| perror_with_name (filename); |
| supply_register (regno, buf); |
| } |
| } |
| } |
| if (filename[0] == '/') |
| corefile = savestring (filename, strlen (filename)); |
| else |
| { |
| corefile = concat (current_directory, "/", filename, NULL); |
| } |
| |
| flush_cached_frames (); |
| select_frame (get_current_frame (), 0); |
| validate_files (); |
| } |
| else if (from_tty) |
| printf_unfiltered ("No core file now.\n"); |
| } |