Implementation sources

Userspace debugging

Task-port access and authorizationbsd/kern/kern_proc.c

Task suspension, resume tokens, and thread enumerationosfmk/kern/task.c

Thread suspension, aborts, and state accessosfmk/kern/thread_act.c

Exception-port registration and restorationosfmk/kern/ipc_tt.c

arm64 register and debug-state accessosfmk/arm64/status.c

arm64 debug-register installationosfmk/arm64/pcb.c

Debugger memory operations and cache attributesosfmk/vm/vm_user.c

VM protection, code writes, and target cache traversalosfmk/vm/vm_map.c

Physical-page instruction-cache synchronizationosfmk/arm/pmap/pmap.c

IPC rights and reply-port copyin checksosfmk/ipc/ipc_right.c

other groups: Exceptions & traps · Task & thread coordination · libpthread · Debugging · MIG (Mach Interface Generator) · LLDB debugserver