| type mcontext_t | |
| type ucontext_t | |
| element ucontext_t {ucontext_t*} uc_link | |
| element ucontext_t sigset_t uc_sigmask | |
| element ucontext_t stack_t uc_stack | |
| element ucontext_t mcontext_t uc_mcontext | |
| type sigset_t | |
| type stack_t | |
| function int getcontext (ucontext_t*) | |
| function int setcontext (const ucontext_t*) | |
| function void makecontext (ucontext_t*, void(*)(void), int, ...) | |
| function int swapcontext (ucontext_t*, const ucontext_t*) | |
| allow uc_* | |
| allow ss_* | |
| allow *_t |