bjorn3
8c0be73224
This reduces the kernel size and avoids the need to define the eh_personality lang item.
43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
//! Intrinsics for panic handling
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use core::alloc::Layout;
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use core::panic::PanicInfo;
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use crate::{cpu_id, context, interrupt, syscall};
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/// Required to handle panics
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#[panic_handler]
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#[no_mangle]
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pub extern "C" fn rust_begin_unwind(info: &PanicInfo) -> ! {
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println!("KERNEL PANIC: {}", info);
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unsafe { interrupt::stack_trace(); }
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println!("CPU {}, PID {:?}", cpu_id(), context::context_id());
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// This could deadlock, but at this point we are going to halt anyways
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{
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let contexts = context::contexts();
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if let Some(context_lock) = contexts.current() {
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let context = context_lock.read();
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println!("NAME: {}", context.name);
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if let Some((a, b, c, d, e, f)) = context.syscall {
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println!("SYSCALL: {}", syscall::debug::format_call(a, b, c, d, e, f));
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}
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}
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}
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println!("HALT");
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loop {
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unsafe { interrupt::halt(); }
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}
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}
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#[alloc_error_handler]
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#[no_mangle]
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#[allow(improper_ctypes_definitions)] // Layout is not repr(C)
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pub extern fn rust_oom(_layout: Layout) -> ! {
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panic!("kernel memory allocation failed");
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}
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