[src/trunk]: src/sys/kern Same change in the kgdb code as was done in ddb:

[jeffs <jeffs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ceb12e006e08
branches:  trunk
changeset: 494976:ceb12e006e08
user:      jeffs <jeffs%NetBSD.org@localhost>
date:      Tue Jul 18 21:49:08 2000 +0000

description:
Same change in the kgdb code as was done in ddb:
  Move platform db_trap callback from arch/mips into ddb as suggested by
  jhawk.  This callback is used by platform code to manage things like
  watchdogs that should be disabled while in ddb.  Done as a callback
  for processors such as mips that support lots of different systems.

diffstat:

 sys/kern/kgdb_stub.c |  13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diffs (48 lines):

diff -r 95c886b629ca -r ceb12e006e08 sys/kern/kgdb_stub.c
--- a/sys/kern/kgdb_stub.c      Tue Jul 18 20:51:07 2000 +0000
+++ b/sys/kern/kgdb_stub.c      Tue Jul 18 21:49:08 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kgdb_stub.c,v 1.6 1998/08/30 20:30:57 scottr Exp $     */
+/*     $NetBSD: kgdb_stub.c,v 1.7 2000/07/18 21:49:08 jeffs Exp $      */
 
 /*
  * Copyright (c) 1990, 1993
@@ -90,6 +90,13 @@
 #define PUTC(c)        ((*kgdb_putc)(kgdb_ioarg, c))
 
 /*
+ * db_trap_callback can be hooked by MD port code to handle special
+ * cases such as disabling hardware watchdogs while in kgdb.  Name
+ * is shared with DDB.
+ */
+void (*db_trap_callback)(int);
+
+/*
  * This little routine exists simply so that bcopy() can be debugged.
  */
 static void
@@ -332,6 +339,8 @@
                return (0);
        }
 
+       if (db_trap_callback) db_trap_callback(1);
+
        /* Detect and recover from unexpected traps. */
        if (kgdb_recover != 0) {
                printf("kgdb: caught trap 0x%x at %p\n",
@@ -363,6 +372,7 @@
        if (kgdb_active == 0) {
                if (!IS_BREAKPOINT_TRAP(type, 0)) {
                        /* No debugger active -- let trap handle this. */
+                       if (db_trap_callback) db_trap_callback(0);
                        return (0);
                }
                /* Make the PC point at the breakpoint... */
@@ -514,6 +524,7 @@
                }
        }
  out:
+       if (db_trap_callback) db_trap_callback(0);
        kgdb_recover = 0;
        return (1);
 }