shdis: Disassembler for Renesas/Hitachi SH1

shdis is a disassembler for the Renesas (formerly Hitachi) SH1 RISC processor. I wrote shdis in 1997 to disassemble the firmware from the Sony DVP-S7000 DVD player, back in the good old days before the DMCA. Disassemblers are not illegal per se in the U.S., but some uses of them are banned. Sigh.

I've written disassemblers for many processors, but writing a good disassembler for the SH proved more difficult than for many other processors, because branch targets are often loaded into registers ahead of time. shdis tries to track register contents in order to determine the branch targets.

Back in 1997 there didn't seem to be any good commercial disassembler for the SH. These days I'd recommend buying a copy of the Advanced edition of the IDA Pro disassembler instead. It's more expensive (obviously), but also a lot more sophisticated. I haven't actually used IDA Pro to disassemble any SH code, but I've been very happy with its performance for other target processors.

shdis is distributed under the terms of the Free Software Foundation's General Public License, Version 2. If you agree to the terms of the license, you may download it.

Download shdis-0.1.tar.gz ( 32K, Monday, 04-Aug-2003 03:07:56 PDT)

Other SH Disassemblers

Note that my shdis is completely unrelated to another SH disassembler by Flavio Morsoletto, also called shdis.

There is a public domain SH disassembler dissuperh.c by xvi. He has also written disassemblers for other processors, which may be found on his web page.

There is an SH1/SH2 disassembler "sh2d" by Bart Trzynadlowski.

Last updated March 30, 2004

Copyright 2003, 2004 Eric Smith

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