37 lines
915 B
Rust
37 lines
915 B
Rust
use crate::sbi::shutdown;
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use crate::task::current_kstack_top;
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use core::arch::asm;
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use core::panic::PanicInfo;
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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if let Some(location) = info.location() {
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println!(
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"[kernel] Panicked at {}:{} {}",
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location.file(),
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location.line(),
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info.message().unwrap()
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);
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} else {
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println!("[kernel] Panicked: {}", info.message().unwrap());
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}
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unsafe {
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backtrace();
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}
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shutdown(255)
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}
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unsafe fn backtrace() {
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let mut fp: usize;
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let stop = current_kstack_top();
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asm!("mv {}, s0", out(reg) fp);
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println!("---START BACKTRACE---");
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for i in 0..10 {
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if fp == stop {
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break;
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}
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println!("#{}:ra={:#x}", i, *((fp - 8) as *const usize));
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fp = *((fp - 16) as *const usize);
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}
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println!("---END BACKTRACE---");
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}
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