2002-01-03 Michael Snyder <msnyder@redhat.com>

	Implement a "generate-core-file" command in gdb, save target state.
	* gcore.c: New file.  Implement new command 'generate-core-file'.
	Save a corefile image of the current state of the inferior.
	* linux-proc.c: Add linux-specific code for saving corefiles.
	* target.h (struct target_ops): Add new target vectors for saving
	corefiles; to_find_memory_regions and to_make_corefile_notes.
	(target_find_memory_regions): New macro.
	(target_make_corefile_notes): New macro.
	* target.c (update_current_target): Inherit new target methods.
	(dummy_find_memory_regions): New place-holder method.
	(dummy_make_corefile_notes): New place-holder method.
	(init_dummy_target): Initialize new dummy target vectors.
	* exec.c (exec_set_find_memory_regions): New function.
	Allow the exec_ops vector for memory regions to be taken over.
	(exec_make_note_section): New function, target vector method.
	* defs.h (exec_set_find_memory_regions): Export prototype.
	* procfs.c (proc_find_memory_regions): New function, corefile method.
	(procfs_make_note_section): New function, corefile method.
	(init_procfs_ops): Set new target vector pointers.
	(find_memory_regions_callback): New function.
	(procfs_do_thread_registers): New function.
	(procfs_corefile_thread_callback): New function.
	* sol-thread.c (sol_find_memory_regions): New function.
	(sol_make_note_section): New function.
	(init_sol_thread_ops): Initialize new target vectors.
	* inftarg.c (inftarg_set_find_memory_regions): New function.
	Allow to_find_memory_regions vector to be taken over.
	(inftarg_set_make_corefile_notes): New function.
	Allow to_make_corefile_notes vector to be taken over.
	* thread-db.c (thread_db_new_objfile): Don't activate thread-db
	interface layer if not target_has_execution (may be a corefile).
	* config/i386/linux.mh: Add gcore.o to NATDEPFILES.
	* config/sparc/sun4sol2.mh: Ditto.
	* config/alpha/alpha-linux.mh: Ditto.
	* config/arm/linux.mh: Ditto.
	* config/i386/x86-64linux.mh: Ditto.
	* config/ia64/linux.mh: Ditto.
	* config/m68k/linux.mh: Ditto.
	* config/mips/linux.mh: Ditto.
	* config/powerpc/linux.mh: Ditto.
	* config/sparc/linux.mh: Ditto.

1 files changed, 22 insertions, 1 deletions

diff --git a/gdb/target.c b/gdb/target.c
index 1a8723c..1af8883 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -1,6 +1,7 @@
 /* Select target systems and architectures at runtime for GDB.
    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001 Free Software Foundation, Inc.
+   2000, 2001, 2002
+   Free Software Foundation, Inc.
    Contributed by Cygnus Support.
 
    This file is part of GDB.
@@ -607,6 +608,8 @@ update_current_target (void)
       INHERIT (to_is_async_p, t);
       INHERIT (to_async, t);
       INHERIT (to_async_mask_value, t);
+      INHERIT (to_find_memory_regions, t);
+      INHERIT (to_make_corefile_notes, t);
       INHERIT (to_magic, t);
 
 #undef INHERIT
@@ -1461,6 +1464,22 @@ normal_target_post_startup_inferior (ptid_t ptid)
   /* This space intentionally left blank. */
 }
 
+/* Error-catcher for target_find_memory_regions */
+/* ARGSUSED */
+static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
+{
+  error ("No target.");
+  return 0;
+}
+
+/* Error-catcher for target_make_corefile_notes */
+/* ARGSUSED */
+static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
+{
+  error ("No target.");
+  return NULL;
+}
+
 /* Set up the handful of non-empty slots needed by the dummy target
    vector.  */
 
@@ -1477,6 +1496,8 @@ init_dummy_target (void)
   dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
   dummy_target.to_pid_to_str = normal_pid_to_str;
   dummy_target.to_stratum = dummy_stratum;
+  dummy_target.to_find_memory_regions = dummy_find_memory_regions;
+  dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
   dummy_target.to_magic = OPS_MAGIC;
 }