[NTLK] ROM Disassembly online?
stevenf at panic.com
Thu May 28 18:27:34 EDT 2015
Matthias & co.,
Wanted to follow up on this earlier email thread...
I'd be happy to help with your to-do list on this page:
. . .
I already have newtonos.s as generated by Albert. I gather from your readme that I should look through that for ".word"s that don't have symbolic information.
So, let's pick a real-world example at random. Here's one at L00221F4C:
.word 0x0001B68C @ 0x00221F4C "...." 112268 (flags_type_arm_word) ?
My guess is that 0x0001B68C is a pointer of some kind, and it refers to this branch instruction in the jump table...?
b VEC_Dispose__5TUnitFv @ 0x0001B68C 0xEA6D09FF - .m..
I can see that L00221F4C is referenced in one place only: an ldr instruction in TStrokeUnit::Make(TDomain *, unsigned long, TStroke *, TArray *)
So, at this point I can make an educated guess that this word at L00221F4C is a function pointer to VEC_Dispose(...), and could probably make up a symbol name for it, or add comments to the disassembly...
But, say I did that... And I did it again for 100 more unknown words... How do I now give this discovered information to you in a way that is helpful? It seems we are still lacking a way to collaboratively annotate the disassembly.
What is the very next thing that needs happen to move this process forward? A new Github repo that contains the annotations as generated by ROMCOM?
More information about the NewtonTalk