1 93eb0e23 2005-11-09 devnull #define	setcontext(u)	_setmcontext(&(u)->mc)
 2 93eb0e23 2005-11-09 devnull #define	getcontext(u)	_getmcontext(&(u)->mc)
 3 cea10000 2005-05-01 devnull typedef struct mcontext mcontext_t;
 4 cea10000 2005-05-01 devnull typedef struct ucontext ucontext_t;
 5 cea10000 2005-05-01 devnull struct mcontext
 6 cea10000 2005-05-01 devnull {
 7 cea10000 2005-05-01 devnull 	ulong	pc;		/* lr */
 8 cea10000 2005-05-01 devnull 	ulong	cr;		/* mfcr */
 9 cea10000 2005-05-01 devnull 	ulong	ctr;		/* mfcr */
10 cea10000 2005-05-01 devnull 	ulong	xer;		/* mfcr */
11 cea10000 2005-05-01 devnull 	ulong	sp;		/* callee saved: r1 */
12 cea10000 2005-05-01 devnull 	ulong	toc;		/* callee saved: r2 */
13 cea10000 2005-05-01 devnull 	ulong	r3;		/* first arg to function, return register: r3 */
14 cea10000 2005-05-01 devnull 	ulong	gpr[19];	/* callee saved: r13-r31 */
15 cea10000 2005-05-01 devnull // XXX: currently do not save vector registers or floating-point state
16 cea10000 2005-05-01 devnull //	ulong	pad;
17 cea10000 2005-05-01 devnull //	uvlong	fpr[18];	/* callee saved: f14-f31 */
18 cea10000 2005-05-01 devnull //	ulong	vr[4*12];	/* callee saved: v20-v31, 256-bits each */
19 cea10000 2005-05-01 devnull };
20 cea10000 2005-05-01 devnull 
21 cea10000 2005-05-01 devnull struct ucontext
22 cea10000 2005-05-01 devnull {
23 cea10000 2005-05-01 devnull 	struct {
24 cea10000 2005-05-01 devnull 		void *ss_sp;
25 cea10000 2005-05-01 devnull 		uint ss_size;
26 cea10000 2005-05-01 devnull 	} uc_stack;
27 cea10000 2005-05-01 devnull 	sigset_t uc_sigmask;
28 cea10000 2005-05-01 devnull 	mcontext_t mc;
29 cea10000 2005-05-01 devnull };
30 cea10000 2005-05-01 devnull 
31 cea10000 2005-05-01 devnull void makecontext(ucontext_t*, void(*)(void), int, ...);
32 cea10000 2005-05-01 devnull int swapcontext(ucontext_t*, ucontext_t*);
33 cea10000 2005-05-01 devnull int _getmcontext(mcontext_t*);
34 cea10000 2005-05-01 devnull void _setmcontext(mcontext_t*);
35 cea10000 2005-05-01 devnull