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#![no_std]
#![feature(alloc)]
#![feature(core_intrinsics)]
#![feature(lang_items)]
#![feature(prelude_import)]
#![feature(raw)]
#![feature(slice_concat_ext)]

/* This section was addapted from the Rust Standard Library, and is licensed accordingly
 * https://github.com/rust-lang/rust/blob/master/src/libstd/lib.rs
 * {
 */

// Explicitly import the prelude. The compiler uses this same unstable attribute
// to import the prelude implicitly when building crates that depend on std.
#[prelude_import]
#[allow(unused)]
use prelude::*;

// Re-export a few macros from core
pub use core::{assert_eq, assert_ne, debug_assert, debug_assert_eq, debug_assert_ne};
pub use core::{unreachable, unimplemented, write, writeln, r#try};

#[allow(unused_imports)]
#[macro_use]
extern crate alloc as alloc_crate;

// The standard macros that are not built-in to the compiler.
#[macro_use]
mod macros;

// The Rust prelude
pub mod prelude;

// Public module declarations and re-exports
pub use core::any;
pub use core::arch;
pub use core::cell;
pub use core::clone;
pub use core::cmp;
pub use core::convert;
pub use core::default;
pub use core::hash;
pub use core::intrinsics;
pub use core::iter;
pub use core::marker;
pub use core::mem;
pub use core::ops;
pub use core::ptr;
pub use core::raw;
pub use core::result;
pub use core::option;
pub use core::isize;
pub use core::i8;
pub use core::i16;
pub use core::i32;
pub use core::i64;
pub use core::i128;
pub use core::usize;
pub use core::u8;
pub use core::u16;
pub use core::u32;
pub use core::u64;
pub use alloc_crate::boxed;
pub use alloc_crate::rc;
pub use alloc_crate::borrow;
pub use alloc_crate::fmt;
pub use alloc_crate::format;
pub use core::pin;
pub use alloc_crate::collections;
pub use alloc_crate::slice;
pub use alloc_crate::str;
pub use alloc_crate::string;
pub use alloc_crate::vec;
pub use core::char;
pub use core::u128;
pub use core::hint;

/* } */

// Re-export uefi and uefi_alloc
pub use uefi;
pub use uefi_alloc;

// Runtime support
pub mod rt;

// Public modules
pub mod exec;
pub mod ffi;
pub mod fs;
pub mod io;
pub mod loaded_image;
pub mod pointer;
pub mod proto;
pub mod shell;
pub mod vars;

#[global_allocator]
static ALLOCATOR: uefi_alloc::Allocator = uefi_alloc::Allocator;

static mut HANDLE: uefi::Handle = uefi::Handle(0);
static mut SYSTEM_TABLE: *mut uefi::system::SystemTable = 0 as *mut uefi::system::SystemTable;

pub fn handle() -> uefi::Handle {
    unsafe { HANDLE }
}

pub fn system_table() -> &'static uefi::system::SystemTable {
    unsafe { & *SYSTEM_TABLE }
}

pub unsafe fn system_table_mut() -> &'static mut uefi::system::SystemTable {
    &mut *SYSTEM_TABLE
}