1 #define	setcontext(u)	libthread_setmcontext(&(u)->mc)
2 #define	getcontext(u)	libthread_getmcontext(&(u)->mc)
3 typedef struct mcontext mcontext_t;
4 typedef struct ucontext ucontext_t;
5 
6 struct mcontext
7 {
8 	uintptr	ax;
9 	uintptr	bx;
10 	uintptr cx;
11 	uintptr dx;
12 	uintptr si;
13 	uintptr di;
14 	uintptr	bp;
15 	uintptr sp;
16 	uintptr r8;
17 	uintptr r9;
18 	uintptr r10;
19 	uintptr r11;
20 	uintptr r12;
21 	uintptr r13;
22 	uintptr r14;
23 	uintptr r15;
24 /*
25 // XXX: currently do not save vector registers or floating-point state
26 */
27 };
28 
29 struct ucontext
30 {
31 	struct {
32 		void *ss_sp;
33 		uint ss_size;
34 	} uc_stack;
35 	sigset_t uc_sigmask;
36 	mcontext_t mc;
37 };
38 
39 void makecontext(ucontext_t*, void(*)(void), int, ...);
40 int swapcontext(ucontext_t*, ucontext_t*);
41 int libthread_getmcontext(mcontext_t*);
42 void libthread_setmcontext(mcontext_t*);
43