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#![warn(clippy::all)]
#![allow(clippy::redundant_field_names)]
#![allow(clippy::identity_op)]
#![allow(clippy::needless_range_loop)]
#![allow(clippy::toplevel_ref_arg)]
#![allow(clippy::not_unsafe_ptr_arg_deref)]
#![allow(clippy::println_empty_string)]
#![allow(clippy::single_match)]
#![allow(clippy::cognitive_complexity)]
#![allow(clippy::forget_copy)]
#![feature(abi_x86_interrupt)]
#![feature(allocator_api)]
#![feature(const_fn)]
#![feature(lang_items)]
#![feature(linkage)]
#![feature(llvm_asm)]
#![feature(panic_info_message)]
#![feature(specialization)]
#![feature(naked_functions)]
#![feature(core_intrinsics)]
#![feature(alloc_error_handler)]
#![allow(unused_macros)]
#![no_std]
#[cfg(test)]
#[macro_use]
extern crate std;
#[macro_use]
extern crate alloc;
#[macro_use]
extern crate bitflags;
#[cfg(target_arch = "x86_64")]
extern crate multiboot;
#[cfg(target_arch = "x86_64")]
extern crate x86;
#[macro_use]
extern crate log;
#[macro_use]
extern crate lazy_static;
extern crate num;
#[macro_use]
extern crate num_derive;
extern crate num_traits;
#[macro_use]
mod macros;
#[macro_use]
mod logging;
mod arch;
mod collections;
mod config;
mod console;
mod drivers;
mod environment;
mod errno;
mod kernel_message_buffer;
mod mm;
#[cfg(not(feature = "newlib"))]
mod rlib;
#[cfg(not(test))]
mod runtime_glue;
mod scheduler;
mod synch;
mod syscalls;
mod util;
pub use arch::*;
pub use config::*;
pub use syscalls::*;
use alloc::alloc::Layout;
use arch::percore::*;
use core::alloc::GlobalAlloc;
use mm::allocator::LockedHeap;
#[cfg(not(test))]
#[global_allocator]
static ALLOCATOR: LockedHeap = LockedHeap::empty();
#[cfg(not(test))]
pub fn __sys_malloc(size: usize, align: usize) -> *mut u8 {
let layout: Layout = Layout::from_size_align(size, align).unwrap();
let ptr;
unsafe {
ptr = ALLOCATOR.alloc(layout);
}
trace!(
"__sys_malloc: allocate memory at 0x{:x} (size 0x{:x}, align 0x{:x})",
ptr as usize,
size,
align
);
ptr
}
#[cfg(not(test))]
pub fn __sys_realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8 {
let layout: Layout = Layout::from_size_align(size, align).unwrap();
let new_ptr;
unsafe {
new_ptr = ALLOCATOR.realloc(ptr, layout, new_size);
}
trace!(
"__sys_realloc: resize memory at 0x{:x}, new address 0x{:x}",
ptr as usize,
new_ptr as usize
);
new_ptr
}
#[cfg(not(test))]
pub fn __sys_free(ptr: *mut u8, size: usize, align: usize) {
let layout: Layout = Layout::from_size_align(size, align).unwrap();
trace!(
"sys_free: deallocate memory at 0x{:x} (size 0x{:x})",
ptr as usize,
size
);
unsafe {
ALLOCATOR.dealloc(ptr, layout);
}
}
#[cfg(not(test))]
extern "C" {
static mut __bss_start: usize;
}
#[cfg(feature = "newlib")]
fn has_ipdevice() -> bool {
arch::x86_64::kernel::has_ipdevice()
}
#[cfg(not(test))]
extern "C" fn initd(_arg: usize) {
extern "C" {
fn runtime_entry(argc: i32, argv: *const *const u8, env: *const *const u8) -> !;
#[cfg(feature = "newlib")]
fn init_lwip();
}
#[cfg(feature = "newlib")]
unsafe {
if has_ipdevice() {
init_lwip();
}
}
if environment::is_uhyve() {
info!("HermitCore is running on uhyve!");
} else if !environment::is_single_kernel() {
info!("HermitCore is running side-by-side to Linux!");
} else {
info!("HermitCore is running on common system!");
}
#[cfg(target_arch = "x86_64")]
x86_64::kernel::pci::init_drivers();
syscalls::init();
let (argc, argv, environ) = syscalls::get_application_parameters();
core_scheduler().reschedule();
unsafe {
runtime_entry(argc, argv, environ);
}
}
#[cfg(not(test))]
fn boot_processor_main() -> ! {
arch::message_output_init();
logging::init();
info!("Welcome to HermitCore-rs {}", env!("CARGO_PKG_VERSION"));
info!("Kernel starts at 0x{:x}", environment::get_base_address());
info!("BSS starts at 0x{:x}", unsafe {
&__bss_start as *const usize as usize
});
info!(
"TLS starts at 0x{:x} (size {} Bytes)",
environment::get_tls_start(),
environment::get_tls_memsz()
);
arch::boot_processor_init();
scheduler::init();
scheduler::add_current_core();
if environment::is_single_kernel() && !environment::is_uhyve() {
arch::boot_application_processors();
}
scheduler::PerCoreScheduler::spawn(initd, 0, scheduler::task::NORMAL_PRIO, 0, USER_STACK_SIZE);
let core_scheduler = core_scheduler();
loop {
core_scheduler.reschedule_and_wait();
}
}
#[cfg(not(test))]
fn application_processor_main() -> ! {
arch::application_processor_init();
scheduler::add_current_core();
info!("Entering idle loop for application processor");
let core_scheduler = core_scheduler();
loop {
core_scheduler.reschedule_and_wait();
}
}