macOS — System Kernel Interfaces

• backtrace(9), backtrace_packed(9), backtrace_user(9) — gather the PC and return addresses of a thread's kernel or user call stack
• backtrace_pack(9), backtrace_unpack(9) — convert a backtrace to and from compact formats
• copy(9), copyin(9), copyinstr(9), copyout(9), copystr(9) — kernel copy functions
• fetch(9), fubyte(9), fuibyte(9), fuiword(9), fulong(9), fuulong(9), fuword(9) — fetch data from user-space
• intro(9) — introduction to system kernel interfaces
• store(9), subyte(9), suibyte(9), suiword(9), sulong(9), suulong(9), suword(9) — store data to user-space
• style(9) — kernel source file style guide