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//! Platform-specific constants and parameters for [ArceOS].
//!
//! Currently supported platforms (specify by cargo features):
//!
//! - `platform-pc-x86`: Standard PC with x86_64 ISA.
//! - `platform-qemu-virt-riscv`: QEMU virt machine with RISC-V ISA.
//! - `platform-qemu-virt-aarch64`: QEMU virt machine with AArch64 ISA.
//! - `dummy`: If none of the above platform is selected, the dummy platform
//!    will be used. In this platform, most of the constants are dummy values.
//!    This platform is mainly used for [cargo test].
//!
//! [ArceOS]: https://github.com/rcore-os/arceos
//! [cargo test]: https://doc.rust-lang.org/cargo/guide/tests.html

#![no_std]

cfg_if::cfg_if! {
    // add `not(target_os = "none")` check to use in `build.rs`
    if #[cfg(all(
        any(target_arch = "x86_64", not(target_os = "none")),
        feature = "platform-pc-x86"
    ))] {
        #[rustfmt::skip]
        #[path = "config_pc_x86.rs"]
        mod config;
    } else if #[cfg(all(
        any(target_arch = "riscv32", target_arch = "riscv64", not(target_os = "none")),
        feature = "platform-qemu-virt-riscv"
    ))] {
        #[rustfmt::skip]
        #[path = "config_qemu_virt_riscv.rs"]
        mod config;
    } else if #[cfg(all(
        any(target_arch = "aarch64", not(target_os = "none")),
        feature = "platform-qemu-virt-aarch64"
    ))] {
        #[rustfmt::skip]
        #[path = "config_qemu_virt_aarch64.rs"]
        mod config;
    } else {
        #[rustfmt::skip]
        #[path = "config_dummy.rs"]
        mod config;
    }
}

pub use config::*;

/// End address of the whole physical memory.
pub const PHYS_MEMORY_END: usize = PHYS_MEMORY_BASE + PHYS_MEMORY_SIZE;