54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(custom_test_frameworks)]
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#![test_runner(blog_os::test_runner)]
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#![reexport_test_harness_main = "test_main"]
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use core::panic::PanicInfo;
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use blog_os::println;
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use bootloader::{entry_point, BootInfo};
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/// This function is called on panic.
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#[cfg(not(test))]
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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println!("{}", info);
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blog_os::hlt_loop();
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}
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#[cfg(test)]
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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blog_os::test_panic_handler(info)
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}
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entry_point!(kernel_main);
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fn kernel_main(boot_info: &'static BootInfo) -> ! {
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use blog_os::memory;
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use x86_64::{structures::paging::Page, VirtAddr};
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println!("Hello World{}", "!");
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blog_os::init();
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let phys_mem_offset = VirtAddr::new(boot_info.physical_memory_offset);
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let mut mapper = unsafe { memory::init(phys_mem_offset) };
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let mut frame_allocator =
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unsafe { memory::BootInfoFrameAllocator::init(&boot_info.memory_map) };
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let page = Page::containing_address(VirtAddr::new(0xdeadbeef000));
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memory::create_example_mapping(page, &mut mapper, &mut frame_allocator);
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let page_ptr: *mut u64 = page.start_address().as_mut_ptr();
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unsafe {
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page_ptr.offset(400).write_volatile(0x_f021_f077_f065_f04e);
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}
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#[cfg(test)]
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test_main();
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println!("It did not crash!");
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blog_os::hlt_loop();
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}
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