radareorg/radare2

Inverse register usage in function

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#13,642 opened on Apr 5, 2019

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Description

The same way i did with dri for registers, we should be able to do the same for instructions in a function. like this:

eax: push, mov, lea
ebx: add, sub
ecx: inc, cmp
esp: push, pop
...

we can also want to get the inverse output of aeaf.. but this is probably something to go ini a separate isssue

Contributor guide

Tech stack
c
Domain
toolingcli
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Familiarity with radare2 CLIC programmingKnowledge of 'dri' command implementation
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the implementation of the 'dri' command for registers, likely in libr/core/cmd anal.c. Understand how it outputs register usage, then create a similar command for instructions within functions to produce an inverse mapping as shown in the issue. Check existing tests and add new ones.