ddb: Add whatis command

This is convenient when tracking buffer overflows

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/mach.texi b/doc/mach.texi
index 7eb5baa1..76bf68f7 100644
--- a/doc/mach.texi
+++ b/doc/mach.texi
@@ -6918,6 +6918,10 @@ Examine backward.  It executes an examine command with the last
 specified parameters to it except that the last start address subtracted
 by the size displayed by it is used as the start address.
 
+@item whatis @var{addr}
+Try to find what this address is. This looks up in the various tasks, threads,
+maps, caches etc. to give an idea what is behind this address.
+
 @item print[/axzodurc] @var{addr1} [ @var{addr2} @dots{} ]
 Print @var{addr}'s according to the modifier character.  Valid formats
 are: @code{a} @code{x} @code{z} @code{o} @code{d} @code{u} @code{r}