36 lines
853 B
Rust
36 lines
853 B
Rust
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#![no_std]
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#![no_main]
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#![feature(abi_efiapi)]
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use core::fmt::Write;
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use core::panic::PanicInfo;
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use core::writeln;
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use uefi::prelude::*;
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// Required for use by the panic handler.
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// This should not be used anywhere else.
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static mut global_st: Option<*mut SystemTable<Boot>> = None;
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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let st = unsafe { &global_st.unwrap().read() };
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writeln!(st.stderr(), "stderr: {}", info);
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writeln!(st.stdout(), "stdout: {}", info);
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loop {}
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}
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#[entry]
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fn efi_main(handle: Handle, st: SystemTable<Boot>) -> Status {
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let mut g_st = unsafe { st.unsafe_clone() };
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unsafe {
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global_st = Some(&mut g_st);
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}
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st.stdout().reset(false).expect_success("Failed to reset UEFI stdout.");
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writeln!(st.stdout(), "Hello, world!");
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loop {}
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Status::SUCCESS
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}
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