radareorg/radare2

Display anal hint in the disasm

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#14,200 opened on May 31, 2019

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HacktoberfestRAsm-Disassemblerconsoleuienhancementgood first issue

Description

For example 'noreturn' statements when calling no return functions, set .bits or .size like if it was compatible with rasm2 syntax

Contributor guide

Tech stack
cshell
Domain
clitooling
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.
half day
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.
needs investigation
Prerequisites
C programmingradare2 disassemblyrasm2 syntaxreverse engineering basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Explore how anal hints are stored in radare2 (r anal hint t in libr/anal/hint.c). Check the disassembly output code (likely in libr/core/disasm.c) to see where instructions are printed. Understand the format of rasm2 statements for .bits and .size to replicate. Look at the r asm and r anal APIs to retrieve hints per address. Then propose modifications to append hint information after disassembly lines or as comments. Start by adding a simple test case for a noreturn function call and verify that the hint appears. Consider adding a configuration option to enable/disable hints display.