All symbols starting with `a' in osfmk/profiling

• ACONTEXT_FIRST osfmk/profiling/profile-internal.h:88
• ACONTEXT_NAMES osfmk/profiling/profile-internal.h:90
• acontext_type_t osfmk/profiling/profile-internal.h:86
• alloc_context osfmk/profiling/profile-internal.h:189
• __attribute__ osfmk/profiling/profile-internal.h:312