Simulator help

["D.Venkatasubramanian, Noida" <dvenkat at noida dot hcltech dot com>]

Hi,

I was trying to understand the code of various simulators used by gdb.
When I was studying the code for the h8300 simulator, I found a writecode.c
file. This file though it exists does not seem to be compiled through the 
Makefile.in in that directory.

Looking  in the other directories, say sh or z8k, I found, there is a
gencode.c
or a writecode.c respectively, and these files are invoked explicitly with
various
options to create some target specific files.

Like in the sh case, compiling and then executing the executable with -x
gives
the switch statement, while -s outputs the jump-table.

Is the writecode.c in h8300 useful or is it redundant or obsolete stuff. 

Do I need to study the source code of gdb to be able to understand the
simulator.
My guess was that the simulator would be wholly defined inside the sim
directory.

If you could point me to any H8 specific documentation, it would be very
useful.

Thanks and Regards,

Venky