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Document the MIPs "mips machine {cpu,nmi,watch,unwatch}" commands.

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Add commented out stubs for the mfcr and mtcr commands.
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simonb 2020-08-23 03:23:53 +00:00
parent 36d16c5b18
commit b60880f7ca
1 changed files with 38 additions and 8 deletions
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share/man/man4/ddb.4
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@ -1,4 +1,4 @@
.\" $NetBSD: ddb.4,v 1.193 2020/08/23 03:17:00 simonb Exp $
.\" $NetBSD: ddb.4,v 1.194 2020/08/23 03:23:53 simonb Exp $
.\"
.\" Copyright (c) 1997 - 2019 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -56,7 +56,7 @@
.\" any improvements or extensions that they make and grant Carnegie Mellon
.\" the rights to redistribute these changes.
.\"
.Dd July 13, 2020
.Dd August 23, 2020
.Dt DDB 4
.Os
.Sh NAME
@ -208,7 +208,7 @@ is entered by using
or by setting
.Ar ddb.commandonenter
with
.Xr sysctl 8 .
2Xr sysctl 8 .
Multiple commands can be separated by a semi-colon.
.Sh COMMAND SYNTAX
The general command syntax is:
@ -1091,18 +1091,48 @@ Otherwise, the given vector is shown.
.Bl -tag -width "traptrace" -compact
.It Ic cp0
Dump CP0 (coprocessor 0) register values.
.It Ic cpu
Switch to another CPU.
.It Ic kvtop
Print the physical address for a given kernel virtual address.
.\" .It Ic mfcr -- document this!
.\" .It Ic mtcr -- document this!
.It Ic nmi
Send an NMI to a different CPU.
This DDB command is currently only implemented for Cavium
Octeon CPUs.
.It Ic reset
Reset the system.
Not implemented for many CPUs and/or systems.
.It Ic tlb
Print out the Translation Lookaside Buffer (TLB).
Only works in
.Nx
kernels compiled with
.Dv DEBUG
option.
Use the
.Cm /v
modifier to show only valid TLB entries.
.It Ic watch
Set a hardware watchpoint on an address or a TLB ASID.
Pass the address to be watched.
If no address is specified, show a list of active watchpoints.
The modifiers are
.Cm /m
i for trap on an instruction fetch,
.Cm /r
for trap on a read,
.Cm /w
for trap on a write,
.Cm /m
for a mask on the address to match,
.Cm /a
for trap on a TLB ASID match.
The
.Cm /m
and
.Cm /a
modifiers require an extra argument for the mask and ASID respectively.
.It Ic unwatch
Clear a hardware watchpoint.
If an address is specified, clear watchpoints that match that address.
If no address is specified, clear all watchpoints.
.El
.Ss POWERPC 4xx
.Bl -tag -width "traptrace" -compact