/* 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <stdio.h> #include "defs.h" #include "param.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 <sys/stat.h> /* Work with core dump and executable files, for GDB. This code would be in core.c if it weren't machine-dependent. */ void core_file_command (filename, from_tty) char *filename; int from_tty; { int val; extern char registers[]; /* 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 inferior 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; bcopy (&u.pt_aouthdr, &core_aouthdr, sizeof (AOUTHDR)); printf ("Core file is from \"%s\".\n", u.pt_comm); if (u.pt_signal > 0) printf ("Program terminated with signal %d, %s.\n", u.pt_signal, u.pt_signal < NSIG ? sys_siglist[u.pt_signal] : "(undocumented)"); /* 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); } set_current_frame ( create_new_frame (read_register (FP_REGNUM), read_pc ())); select_frame (get_current_frame (), 0); validate_files (); } else if (from_tty) printf ("No core file now.\n"); }