Support for ADSP-21XX / 2181 disassembler

db5fp commented 4 years ago

I need support für ADSP-2181, disasamler. I can help with some time an code / ROM-Files, but I'm not a programming expert.

Thanks Frank

trufae commented 4 years ago

Can you share some links about this DSP? Basically what's needed to proceed is the following:

distributable binary files for the testsuite (we dont want to suffer copyright problems) if you have the SDK try building ired or any small program
it is supported by binutils? ghidra? from what i see its only supported in IDA... and MAME.. :D so i think it will be neat to have the glue code to use the mame disassemblers within r2.
memory layout and other details from the architecture
which file formats can u find binaries for this arch? (PE, ELF, COFF, RAW?)
the pdf of the specs of this arch. with instruction definitions etc.

Having support for MAME would be a good thing for r2, we could use it as a debugger backend. There are some easy things to do when supporting new architectures in r2:

implement the pseudo disassembly filter (kind of regex to transform instruction to human readable text)
add instruction definitions
create the register profile and define calling Convention rules (can be extracted from gdb, or written by hand)
write tests to avoid regressions in code analysis
...

trufae commented 4 years ago

https://github.com/mamedev/mame/blob/master/src/devices/cpu/adsp2100/adsp2100.h

trufae commented 4 years ago

Note that mame is C++ so its not something we want in r2core. must be done in radare2-extras

db5fp commented 4 years ago

ASM is described here starting from A-1 (page 131) http://www.smd.hu/Data/Analog/DSP/21xx/Assembler%20Tools%20and%20Simulator%20Manual%2021xx/ASM.PDF Examples of files can be found along the internet example : https://wunderkis.de/sigi/index.html

Files would by BIN or HEX-files from old (EP)ROM-Images or even code from the olda assembler tools from Analogdevices

db5fp commented 4 years ago

http://bitsavers.informatik.uni-stuttgart.de/components/analogDevices/dsp/ADSP-2100_Users_Manual_3ed_Sep95.pdf page 241 (10-24) shows example of ADSP-2181 System and Memory MAP

db5fp commented 4 years ago

https://www.analog.com/media/en/dsp-documentation/evaluation-kit-manuals/442236245ADSP_2181_EZ_KIT_Lite_Legacy.pdf This is a very a very popular Dev-Kit , System is explained here and page 66 is showing schematic

db5fp commented 4 years ago

http://web.archive.org/web/20060219051448/http://www.dce.bg/~vladitx/adsp2181/

I'll try, so omaybe it's all done, yet!

radareorg / radare2

Support for ADSP-21XX / 2181 disassembler #17671