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| -rw-r--r-- | share/man/man4/ddb.4 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4 index c445d587898..d383231c034 100644 --- a/share/man/man4/ddb.4 +++ b/share/man/man4/ddb.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ddb.4,v 1.4 1997/06/11 23:33:40 deraadt Exp $ +.\" $OpenBSD: ddb.4,v 1.5 1997/06/12 02:55:48 mickey Exp $ .\" $NetBSD: ddb.4,v 1.5 1994/11/30 16:22:09 jtc Exp $ .\" .\" Mach Operating System @@ -159,6 +159,9 @@ It's best to enclose each expression in parentheses. .It set $<variable> [=] <expr> Set the named variable or register with the value of 'expr'. Valid variable names are described below. +.It boot {sync,crash,dump} +Reboot the machine with syncing disks, not syncing or dumping core, +syncing disk and dumping core, respectively. .It break[/u] <addr>[,<count>] Set a break point at 'addr'. If count is supplied, continues (count-1) times before stopping at the @@ -198,6 +201,14 @@ Some machines (e.g., pmax) also count loads and stores. Warning: when counting, the debugger is really silently single-stepping. This means that single-stepping on low-level code may cause strange behavior. +.It hangman [/s[0-9]] +This is tiny and handy tool to anylyze random kernel hangs. +It uses some sophisticated heuristics to spot the global symbol that +caused the hang. Since the discovering algorythm is a probabilistic one +you may spend substantial time to figure the exact symbol name. +Hint: the +.Xr nm 1 +may help. .It until[/p] Stop at the next call or return instruction. If 'p' option is specified, print the call nesting depth and the |