- Add a global variable 'fbsdcoreops_suppress_target' that can be set to

  force the FreeBSD multithreaded core target to not register any target
  for handling core dumps.  This is analogous to the
  'coreops_suppress_target' variable that GDB provides for suppressing the
  default core dump target.  KGDB will use this new variable so it can
  provide its own core dump target that uses libkvm to work with vmcore
  files.
- Adjust the long name and documentation of the FreeBSD multithreaded core
  dump target so it better matches what GDB's core dump target uses.

MFC after:	1 week
Reviewed by:	davidxu, marcel

1 files changed, 11 insertions, 2 deletions

diff --git a/gnu/usr.bin/gdb/libgdb/fbsd-threads.c b/gnu/usr.bin/gdb/libgdb/fbsd-threads.c
index 0000cb8..730d0f6 100644
--- a/gnu/usr.bin/gdb/libgdb/fbsd-threads.c
+++ b/gnu/usr.bin/gdb/libgdb/fbsd-threads.c
@@ -1375,8 +1375,9 @@ static void
 init_fbsd_core_ops (void)
 {
   fbsd_core_ops.to_shortname = "FreeBSD-core";
-  fbsd_core_ops.to_longname = "FreeBSD core thread.";
-  fbsd_core_ops.to_doc = "FreeBSD threads support for core files.";
+  fbsd_core_ops.to_longname = "FreeBSD multithreaded core dump file";
+  fbsd_core_ops.to_doc =
+    "Use a core file as a target.  Specify the filename of the core file.";
   fbsd_core_ops.to_open = fbsd_core_open;
   fbsd_core_ops.to_close = fbsd_core_close;
   fbsd_core_ops.to_attach = 0;
@@ -1506,9 +1507,17 @@ thread_db_load (void)
 
 int coreops_suppress_target = 1;
 
+/* similarly we allow this target to be completely skipped.  This is used
+   by kgdb which uses its own core target. */
+
+int fbsdcoreops_suppress_target;
+
 void
 _initialize_thread_db (void)
 {
+
+  if (fbsdcoreops_suppress_target)
+    return;
   init_fbsd_thread_ops ();
   init_fbsd_core_ops ();