[package]
name = "rust_kernel"
version = "0.1.0"
edition = "2024"

[dependencies]
# Bootloader 0.9.x: the version used by the 2nd edition of "Writing an OS in Rust".
# `cargo bootimage` links it with our kernel into a bootable BIOS disk image.
bootloader = "0.9"
volatile = "0.2.6"      # stops the compiler optimising away VGA buffer writes
spin = "0.5.2"          # spinlock Mutex (no OS = no std::sync::Mutex)
x86_64 = "0.15"         # safe wrappers for x86 instructions/ports (hlt, outb, ...)
uart_16550 = "0.3"      # driver for the serial port (COM1)

[dependencies.lazy_static]
version = "1.0"
features = ["spin_no_std"]

[features]
# Build with `--features headless` to make the kernel shut QEMU down after
# printing its greeting (used by scripts/run-headless.sh). Without it the
# kernel just halts forever so you can look at the QEMU window.
headless = []

# No unwinding in a kernel: just abort on panic.
[profile.dev]
panic = "abort"
[profile.release]
panic = "abort"

# Extra QEMU arguments used by `cargo run` (via `bootimage runner`).
[package.metadata.bootimage]
run-args = [
    "-device", "isa-debug-exit,iobase=0xf4,iosize=0x04",  # lets the kernel exit QEMU
    "-serial", "stdio",                                    # serial port -> your terminal
]