+typedef struct {
+ void *ss_sp;
+ size_t ss_size;
+ int ss_flags;
+} stack_t;
+
+/*
+** ucontext.h
+*/
+
+typedef /*@abstract@*/ mcontext_t;
+
+typedef struct s_ucontext_t {
+ /*@null@*/ struct s_ucontext_t *uc_link;
+ sigset_t uc_sigmask;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+} ucontext_t;
+
+int getcontext(ucontext_t *);
+int setcontext(const ucontext_t *);
+void makecontext(ucontext_t *, void (*)(void), int, ...);
+int swapcontext(ucontext_t *restrict, const ucontext_t *restrict);
+
+/*
+** signal.h
+*/
+