How to obtain function parameters from stack frames?

[yinggang-gao]

Whatever I configure Frame Pointer Unwinder or ORC Unwinder on my x86_64 machine, I can only get the same "......" string by the fp command. Could you show me the reason? Or tell me what I didn't notice?

[k-hagio]

You are talking about the fp.c extension module, right?
https://crash-utility.github.io/extensions.html#FP

Then please ask the author about it. This crash-extensions page is just a storage space for crash extension modules, most of the authors don't watch GitHub issues here.

[yinggang-gao]

You are talking about the fp.c extension module, right?
https://crash-utility.github.io/extensions.html#FP

Then please ask the author about it. This crash-extensions page is just a storage space for crash extension modules, most of the authors don't watch GitHub issues here.

Thank you!

[sandeepmvd]

@LoserAndSeeker
Were you able to get the function parameters?
I managed to build 7.1.5 fp extension. But when i do fp, it does not show any parameters.

help fp also does not show any useful information

---- Edit ----
A quick look at the code, it is looking for registers. so when i tried on the crashing process, then it works..
So, may be it works only when there is register dump available.