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-rw-r--r--gdb/umax-xdep.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/gdb/umax-xdep.c b/gdb/umax-xdep.c
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+/* umax host stuff.
+ Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING. If not, write to
+the Free Software Foundation, 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");
+}