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xous: thread: mark thread_main() as divergent

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The thread wrapper function never returns, so we can mark it as
divergent.

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2023-12-29 19:16:43 +08:00
parent 99b06594a8
commit 50e4fede24
1 changed files with 7 additions and 3 deletions
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10
library/std/src/sys/pal/xous/thread.rs
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@ -68,14 +68,18 @@ impl Thread {
)
.map_err(|code| io::Error::from_raw_os_error(code as i32))?;
extern "C" fn thread_start(main: *mut usize, guard_page_pre: usize, stack_size: usize) {
extern "C" fn thread_start(
main: *mut usize,
guard_page_pre: usize,
stack_size: usize,
) -> ! {
unsafe {
// Finally, let's run some code.
// Run the contents of the new thread.
Box::from_raw(main as *mut Box<dyn FnOnce()>)();
}
// Destroy TLS, which will free the TLS page and call the destructor for
// any thread local storage.
// any thread local storage (if any).
unsafe {
crate::sys::thread_local_key::destroy_tls();
}