← Solana theorytheory 0/100 · 0%

level 1

Curious · 0 XP

streak

perfect

badges

100 XP to Apprentice

Native Rust · medium

16. Native Rust: The entrypoint! Macro

Raw program execution without framework magic.

1 min read2 questionsup to 50 XPtopic 16/100

Read in another language

AI translates the explanation and quiz text while preserving code and answer scoring.

In native Rust programs, the `entrypoint!` macro defines the single function invoked by the SBF runtime: `process_instruction(program_id, accounts, instruction_data)`.

rust
use solana_program::{
    account_info::AccountInfo, entrypoint, entrypoint::ProgramResult, pubkey::Pubkey,
};

entrypoint!(process_instruction);

pub fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {
    // Manual dispatch logic
    Ok(())
}

How to study this topic

1. Read the explanation once end to end, skipping the code.
2. Re-read the code snippets and say out loud what each line does.
3. Answer the quiz without scrolling back — that is the real check.
4. Read every explanation, even for the answers you got right.

Scoring

· Up to 30 XP from quiz accuracy.
· +15 XP for a perfect first attempt.
· +5 XP while a 3-day streak is running.
· 75% or higher marks the topic complete.

Check your understanding

1. What arguments does the native process_instruction function accept?
&Pubkey (program_id), &[AccountInfo] (accounts), &[u8] (instruction_data)Context<T> onlyTransaction and BlockRequest and Response
2. What macro declares the on-chain entrypoint in native solana-program?
entrypoint!#[program]#[entry]solana_main!

Badges

First light

Pass your first topic

Sharp shooter

3 perfect first-try quizzes

On a roll

Study 3 days in a row

Week warrior

Study 7 days in a row

Grinder

Earn 500 XP

Deep diver

Earn 1500 XP