feat(bootloader): add bootable image
Signed-off-by: Julien CLEMENT <julien.clement@epita.fr>
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@ -1,5 +1,9 @@
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[target.'cfg(target_os = "linux")']
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rustflags = ["-C", "link-arg=-nostartfiles"]
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[build]
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target = "x86_64-julios.json"
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[unstable]
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build-std-features = ["compiler-builtins-mem"]
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build-std = ["core", "compiler_builtins"]
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[target.'cfg(target_os = "none")']
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runner = "bootimage runner"
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9
Cargo.lock
generated
9
Cargo.lock
generated
@ -2,6 +2,15 @@
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "bootloader"
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version = "0.9.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b7c452074efc3c0bfb241fb7bc87df04741c7c85e926f6a07c05f8fbd6008240"
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[[package]]
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name = "julios"
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version = "0.1.0"
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dependencies = [
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"bootloader",
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]
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@ -6,4 +6,4 @@ edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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bootloader = "0.9.8"
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13
src/main.rs
13
src/main.rs
@ -7,8 +7,21 @@ fn panic(_info: &core::panic::PanicInfo) -> !
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loop {}
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}
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static HELLO: &[u8] = b"Welcome to the JuliOS";
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#[no_mangle]
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pub extern "C" fn _start() -> !
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{
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let vga_buffer: *mut u8 = 0xb8000 as *mut u8;
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for (i, &byte) in HELLO.iter().enumerate()
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{
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unsafe
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{
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*vga_buffer.offset(i as isize * 2) = byte;
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*vga_buffer.offset(i as isize * 2 + 1) = 0xb;
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}
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}
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loop {}
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}
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