The "entering debugger" section moved higher.
Key sequences for "pmax" added to "entering debugger".
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fair
parent
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adceb30242
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@ -1,4 +1,4 @@
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.\" $NetBSD: ddb.4,v 1.20 1998/03/25 19:45:02 fair Exp $
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.\" $NetBSD: ddb.4,v 1.21 1998/03/25 21:26:33 fair Exp $
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.\"
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.\" Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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@ -84,6 +84,53 @@ upon kernel panic:
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is the in-kernel debugger.
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It may be entered at any time via a special key sequence, and
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optionally may be invoked when the kernel panics.
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.Sh ENTERING THE DEBUGGER
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Unless
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.Dv DDB_ONPANIC
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is set to 0,
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.Nm
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will be activated whenever the kernel would otherwise panic.
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.Pp
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.Nm
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may also be activated from the console.
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In general, sending a break on a serial console will activate
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.Nm "" .
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There are also key sequences for each port that will activate
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.Nm
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from the keyboard:
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.Bl -tag -offset indent -width "mvme68k"
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.It alpha
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<Ctrl>-<Alt>-<Esc> on PC style keyboards.
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.It amiga
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<LAlt>-<LAmiga>-<F10>
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.It hp300
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<Shift>-<Reset>
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.It i386
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<Ctrl>-<Alt>-<Esc>
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.It mac68k
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<Command>-<Power>, or the Interrupt switch.
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.It mvme68k
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Abort switch on CPU card.
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.It pmax
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<Break> on serial console, or <Do> on LK-201 rcons console.
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.It sparc
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<L1>-A, or <Stop>-A
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.El
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.Pp
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In addition,
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.Nm
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may be explicitly activated by the debugging code in the kernel
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if
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.Cm DDB
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is configured.
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.Sh COMMAND SYNTAX
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.Pp
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The general command syntax is:
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.Bd -ragged -offset indent
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.Ic command Ns Op Cm / Ns Ar modifier
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.Ar address
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.Op Cm , Ns Ar count
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.Ed
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.Pp
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The current memory location being edited is referred to as
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.Ar dot ,
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@ -104,13 +151,6 @@ and set
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to be the same as
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.Ar dot .
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.Pp
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The general command syntax is:
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.Bd -ragged -offset indent
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.Ic command Ns Op Cm / Ns Ar modifier
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.Ar address
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.Op Cm , Ns Ar count
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.Ed
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.Pp
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A blank line repeats the previous command from the address
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.Ar next
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with a
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@ -601,46 +641,46 @@ All of these commands are preceded by the command word
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to indicate that they are part of the machine-specific command
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set (e.g. "machine reboot").
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Some of these commands are:
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.Ss Alpha
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.Ss alpha
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.Bl -tag -width "intrchain"
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.It halt
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call the PROM monitor to halt the CPU.
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Call the PROM monitor to halt the CPU.
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.It reboot
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call the PROM monitor to reboot the CPU.
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Call the PROM monitor to reboot the CPU.
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.El
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.Ss Arm32
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.Ss arm32
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.Bl -tag -width "intrchain"
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.It vmstat
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Equivalent to
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.Xr vmstat 8
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output with "-s" option (statistics).
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.It vnode
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print out a description of a vnode.
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Print out a description of a vnode.
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.It intrchain
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print the list of IRQ handlers.
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Print the list of IRQ handlers.
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.It panic
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print the current "panic" string.
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Print the current "panic" string.
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.It frame
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Given a trap frame address, print out the trap frame.
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.El
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.Ss Mips
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.Ss mips
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.Bl -tag -width "intrchain"
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.It halt
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call the PROM monitor to halt the CPU.
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Call the PROM monitor to halt the CPU.
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.It tlb
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Print out the Translation Lookaside Buffer.
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Print out the Translation Lookaside Buffer (TLB).
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.It trapdump
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Print out the Trap Log.
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Only works in
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.Nx
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kernels compiled with DEBUG option.
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.El
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.Ss Sparc
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.Ss sparc
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.Bl -tag -width "intrchain"
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.It prom
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Drop into Sun PROM monitor.
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Exit to the Sun PROM monitor.
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.El
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.Ss Sun3 and Sun3x
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.Ss sun3 and sun3x
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.Bl -tag -width "intrchain"
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.It abort
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Drop into monitor via abort (allows continue).
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@ -787,43 +827,7 @@ It may be followed by a
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.Sq :
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and modifiers as described above.
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.El
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.Sh ENTERING THE DEBUGGER
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Unless
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.Va onpanic
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is set to 0,
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.Nm
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will be activated whenever the kernel would otherwise panic.
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.Pp
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.Nm
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may also be activated from the console.
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In general, sending a break on a serial console will activate
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.Nm "" .
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There are also key sequences for each port that will activate
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.Nm
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from the keyboard:
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.Bl -tag -offset indent -width "mvme68k"
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.It alpha
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<Ctrl>-<Alt>-<Esc> on PC style keyboards.
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.It amiga
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<LAlt>-<LAmiga>-<F10>
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.It hp300
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<Shift>-<Reset>
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.It i386
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<Ctrl>-<Alt>-<Esc>
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.It mac68k
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<Command>-<Power>, or the Interrupt switch.
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.It mvme68k
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Abort switch on CPU card.
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.It sparc
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<L1>-A, or <Stop>-A
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.El
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.Pp
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In addition,
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.Nm
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may be explicitly activated by the debugging code in the kernel
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if
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.Cm DDB
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is configured.
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.Sh HISTORY
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The
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.Nm
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