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42 lines
965 B
Rust
42 lines
965 B
Rust
#![feature(panic_info_message)]
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#![no_std]
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#![no_main]
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use core::arch::global_asm;
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use sbi::{console_put_char, shutdown};
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use lang_items::console;
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mod lang_items;
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mod sbi;
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// 汇编脚本引入, 调整内核的内存布局之后, 会跳入到 rust_main中执行
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global_asm!(include_str!("entry.asm"));
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extern "C" {
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fn stext();
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fn etext();
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fn sbss();
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fn ebss();
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fn boot_stack_top_bound();
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fn boot_stack_lower_bound();
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}
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#[no_mangle]
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pub fn rust_main(){
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init_bss();
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println!("stext: {:#x}, etext: {:#x}", stext as usize, etext as usize);
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println!("sbss: {:#x}, ebss: {:#x}", sbss as usize, ebss as usize);
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println!("boot_stack_top_bound: {:#x}, boot_stack_lower_bound: {:#x}", boot_stack_top_bound as usize, boot_stack_lower_bound as usize);
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panic!("my panic");
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}
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/// ## 初始化bss段
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///
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fn init_bss() {
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unsafe {
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(sbss as usize..ebss as usize).for_each(|p| (p as *mut u8).write_unaligned(0))
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}
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}
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