message: Added probestack to LibCall
diff: @@ -329,10 +329,17 @@ impl Instance {
  RelocationType::LibCall(LibCall::NearestF64) => {
  math_intrinsics::nearbyintf64 as isize
  },
  - _ => unimplemented!()
  - // RelocationType::Intrinsic(name) => {
  + RelocationType::LibCall(LibCall::Probestack) => {
  + __rust_probestack as isize
  + },
  + RelocationType::LibCall(call) => {
  + panic!("Unexpected libcall {}", call);
  + },
  + RelocationType::Intrinsic(ref name) => {
  + panic!("Unexpected intrinsic {}", name);
  // get_abi_intrinsic(name)?
  - // },
  + },
  + // _ => unimplemented!()
  };
  let func_addr =
  @@ -677,3 +684,9 @@ extern "C" fn current_memory(memory_index: u32, instance: &mut Instance) -> u32
  let memory = &instance.memories[memory_index as usize];
  memory.current_pages() as u32
  }
  +
  +/// A declaration for the stack probe function in Rust's standard library, for
  +/// catching callstack overflow.
  +extern "C" {
  + pub fn __rust_probestack();
  +}
  