User modifications to SLEIGH in plugin?

[sad-dev]

I would like to distribute a plugin that is coupled with various changes to SLEIGH specification. This includes (using ia.sinc as an example)

1. Changing the SLEIGH for various instructions e.g. fastfail (Mark failfast/int 29 as noreturn #2542)
2. Creating user-defined pcode e.g. define pcodeop fastfail

Is there a way I can do this in my plugin without needing to distribute my version of ia.sinc for users to replace manually in their ghidra installations?

[emteere]

Currently there is no mechanism to surgically include your own ia.sinc.

I see the failfast issue and that might be able to be handled in the base ia.sinc file, if it is ALWAYS a non-returning int call.

I believe you can override the call that is after the SWI pseudo-op to be a CALL/RETURN flow.
The decompiler should then ignore it for stack analysis and control flow.
It is possible this might not work, but in theory it should.

[emteere]

What other changes are you making in the ia.sinc file?

[sad-dev]

Among others, I was toying with making changes to the REP MOV instructions:

1. A new callother inferred_memcpy
2. Update the DI,SI, and CX registers

I havn't been quite able to make it work on both 32 and 64 bit, but the net effect should be to decompile REP MOV instructions better

[Wall-AF]

Don't forget 16-bit too!!!