Macro linux_entry 

macro_rules! linux_entry {
    (
    // The main() function will return LinuxResult, and get converted to LINUX_EXIT
    linux_result) => { ... };
    (
    // $main_body: the body of the entry point function that receives the result of main()
    main_body: $main_body:expr) => { ... };
    (
    //
    _start: $main:ident) => { ... };
}

Available on crate feature linux only.

🐧 ⌗ Defines the program entry point and main fn translation layer for Linux systems.

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^{📍 sys/os/linux}

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Handles architecture-specific entry point setup and Rust-to-C ABI translation.