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| -rw-r--r-- | share/man/man4/ddb.4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4 index 37dd7e59d3d4..bee394f01f82 100644 --- a/share/man/man4/ddb.4 +++ b/share/man/man4/ddb.4 @@ -419,6 +419,27 @@ with an error message. Attempts to watch wired kernel memory may cause unrecoverable error in some systems such as i386. Watchpoints on user addresses work best. +.It Xo +.Cm hwatch +.Ar addr Ns Li \&, Ns Ar size +.Xc +Set a hardware watchpoint for a region if supported by the +architecture. Execution stops when an attempt to modify the region +occurs. The +.Ar size +argument defaults to 4. +.Pp +.Sy Warning : +The hardware debug facilities do not have a concept of seperate +address spaces like the watch command does. Use +.Cm hwatch +for setting watchpoints on kernel address locations only, and avoid +its use on user mode address spaces. +.It Xo +.Cm dhwatch +.Ar addr Ns Li \&, Ns Ar size +.Xc +Delete specified hardware watchpoint. .It Cm gdb Toggles between remote GDB and DDB mode. In remote GDB mode, another machine is required that runs |