#[unsafe(no_mangle)]pub extern "C" fn rivet_task_exit_core(
val_lo: usize,
val_hi: usize,
) -> !Expand description
Arch trampoline target: the task’s entry returned; val_lo/val_hi
carry the return value (or, for >8-byte results, val_lo is a pointer
into this task’s own stack). Stores the result, marks the task exited,
wakes its joiner, and parks forever.