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kernel wip

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mii443
2025-07-01 18:18:46 +09:00
parent bfea023c76
commit 96efe350eb
4 changed files with 90 additions and 6 deletions
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31
nel_os_bootloader/Cargo.lock generated
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@ -8,6 +8,12 @@ version = "0.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dc827186963e592360843fb5ba4b973e145841266c1357f7180c43526f2e5b61"
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitflags"
version = "2.9.1"
@ -32,6 +38,7 @@ version = "0.1.0"
dependencies = [
"log",
"uefi",
"x86",
]
[[package]]
@ -72,6 +79,15 @@ dependencies = [
"proc-macro2",
]
[[package]]
name = "raw-cpuid"
version = "10.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6c297679cb867470fa8c9f67dbba74a78d78e3e98d7cf2b08d6d71540f797332"
dependencies = [
"bitflags 1.3.2",
]
[[package]]
name = "syn"
version = "2.0.104"
@ -98,7 +114,7 @@ version = "0.35.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "da7569ceafb898907ff764629bac90ac24ba4203c38c33ef79ee88c74aa35b11"
dependencies = [
"bitflags",
"bitflags 2.9.1",
"cfg-if",
"log",
"ptr_meta",
@ -125,7 +141,7 @@ version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7cad96b8baaf1615d3fdd0f03d04a0b487d857c1b51b19dcbfe05e2e3c447b78"
dependencies = [
"bitflags",
"bitflags 2.9.1",
"uguid",
]
@ -140,3 +156,14 @@ name = "unicode-ident"
version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
[[package]]
name = "x86"
version = "0.52.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2781db97787217ad2a2845c396a5efe286f87467a5810836db6d74926e94a385"
dependencies = [
"bit_field",
"bitflags 1.3.2",
"raw-cpuid",
]

1
nel_os_bootloader/Cargo.toml
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@ -6,3 +6,4 @@ edition = "2024"
[dependencies]
log = "0.4.27"
uefi = { version = "0.35.0", features = ["logger", "panic_handler", "alloc"] }
x86 = "0.52.0"

57
nel_os_kernel/src/main.rs
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@ -1,3 +1,56 @@
fn main() {
println!("Hello, world!");
#![no_std]
#![no_main]
use core::arch::asm;
use core::panic::PanicInfo;
use core::ptr::addr_of;
const STACK_SIZE: usize = 1024 * 1024;
#[repr(C, align(16))]
struct AlignedStack {
stack: [u8; STACK_SIZE],
}
#[used]
static mut KERNEL_STACK: AlignedStack = AlignedStack {
stack: [0; STACK_SIZE],
};
#[unsafe(no_mangle)]
pub extern "sysv64" fn asm_main() -> ! {
unsafe {
let stack_base = addr_of!(KERNEL_STACK.stack) as *const u8;
let stack_top = stack_base.add(STACK_SIZE);
asm!(
"mov rsp, {stack_top}",
"call {main}",
"2:",
"hlt",
"jmp 2b",
stack_top = in(reg) stack_top,
main = sym main,
options(noreturn)
)
}
}
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
hlt_loop();
}
#[inline]
fn hlt_loop() -> ! {
loop {
unsafe {
asm!("hlt");
}
}
}
#[unsafe(no_mangle)]
pub extern "sysv64" fn main() {
hlt_loop();
}

7
nel_os_kernel/x86_64-nel_os.json
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@ -1,5 +1,5 @@
{
"llvm-target": "x86_64-unknown-none",
"llvm-target": "x86_64-unknown-none-elf",
"data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
"arch": "x86_64",
"target-endian": "little",
@ -7,10 +7,13 @@
"target-c-int-width": "32",
"os": "none",
"executables": true,
"exe-suffix": ".elf",
"linker-flavor": "ld.lld",
"linker": "rust-lld",
"panic-strategy": "abort",
"disable-redzone": true,
"features": "-mmx,-sse,+soft-float",
"rustc-abi": "x86-softfloat"
"rustc-abi": "x86-softfloat",
"code-model": "kernel",
"max-atomic-width": 64
}