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MDB Architecture

This page describes the internal architecture of MDB and how the source code is related. At the moment, we are only able to provide a brief overview of the source code layout, but we will follow up with more specific documentation as it is written.

kmdb Architecture

A description of the design and implementation of kmdb can be found here.

Source Code Layout

The vast majority of the code for MDB resides within usr/src/cmd/mdb. A support driver for kmdb can be found in usr/src/uts/common/io/kmdb. The precise layout within these directories can be somewhat confusing, so here is a brief overview. We avoid discussing the MDB makefile system, as this is a family web site.

Directory	Description
common/mdb	Core MDB infrastructure
common/kmdb	Core kmdb infrastructure
common/libstand	kmdb support code
common/libstandctf	kmdb support code
common/modules	Generic MDB modules (kernel and userland)
i86pc/modules	x86-specific MDB modules
intel/mdb	x86-specific MDB support code
intel/kmdb	x86-specific kmdb support code
sparc/mdb	SPARC-specific MDB support code
sparc/kmdb	SPARC-specific kmdb support code
sun4u/modules	sun4u-specific modules
sun4v/modules	sun4v-specific modules
demo	Sample module shipped as /usr/demo/mdb
tools	Tools used when building kmdb
uts/common/kmdb	kmdb support driver