origin 0.26.2

Program startup and thread support written in Rust
Documentation 
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//! If we don't have "unwinding", provide stub functions for unwinding and
//! panicking.

// If requested, provide a version of "eh-personality-continue" ourselves.
#[cfg(feature = "eh-personality-continue")]
#[unsafe(no_mangle)]
unsafe extern "C" fn rust_eh_personality(
    version: core::ffi::c_int,
    _actions: core::ffi::c_int,
    _exception_class: u64,
    _exception: *mut core::ffi::c_void,
    _ctx: *mut core::ffi::c_void,
) -> core::ffi::c_int {
    if version != 1 {
        return 3; // UnwindReasonCode::FATAL_PHASE1_ERROR
    }
    8 // UnwindReasonCode::CONTINUE_UNWIND
}

// If requested, provide a version of "panic-handler-trap" ourselves.
#[cfg(feature = "panic-handler-trap")]
#[panic_handler]
fn panic(_info: &core::panic::PanicInfo<'_>) -> ! {
    crate::arch::trap()
}