Mach messages: arcade_upcall

Message catalog and dispatch · All subsystem ranges · Kernel entry map

osfmk/mach/arcade_upcall.defs. Service/callback interface outside the ordinary kernel kobject table. Follow local sender/receiver evidence; external service bodies are not supplied by the declaration. Registration evidence: mig_e.

Reading these entries

IDs are computed from the explicit preprocessing profiles in the catalog guide, counting both routines and skip slots. They are not discovered from a running kernel. Each entry retains all observed names/declaration locations; the displayed fields come from the first non-skipped profile. Alternative declarations can have different fields. simpleroutine is one-way at the MIG interface level.

An interface contract block quotes the adjacent local .defs comment with whitespace normalized. Mechanism paragraphs explain selected implementation decisions. Local body links and call names identify implementation evidence; syntactic call lists are reading aids, not a proof that every listed call executes on every path. Short complete implementation bodies are included where especially useful.

Complete routine and reserved-slot catalog

61471: arcade_upcall

Issue the registered protected-feature request to its external service.

Mechanism: The local bridge sends a vm_map_copy path buffer, its length and file offset to the registered validation service and receives should_kill. The AST path obtains/refreshes that service and interprets the RPC outcome. Validation internals run in the external service; this declaration does not expose its policy implementation. Local path.

Declarations: arcade_upcall (server64, server32, client64, client32, libsyscall64, sender64, local64).

Fields after preprocessing (server64):

routine arcade_upcall(
           arcade_upcall : mach_port_t;
           path : pointer_t;
           offset : uint64_t;
 out should_kill : boolean_t);

Implementation boundary: no same-symbol receiver body was resolved in the indexed local C/C++ implementation files. Local source occurrences to follow: osfmk/kern/arcade.c:267. These may be senders, wrappers or declarations; they do not establish a local receiver.