1 /*
2  * setjmp and longjmp, but our own because some (stupid) c libraries
3  * assume longjmp is only used to move up the stack, and error out
4  * if you do otherwise.
5  */
6 
7 typedef struct Label Label;
8 #define LABELDPC 0
9 
10 #if defined (__i386__) && (defined(__FreeBSD__) || defined(__linux__))
11 struct Label
12 {
13 	ulong pc;
14 	ulong bx;
15 	ulong sp;
16 	ulong bp;
17 	ulong si;
18 	ulong di;
19 };
20 #elif defined(__APPLE__)
21 struct Label
22 {
23 	ulong	pc;		/* lr */
24 	ulong	cr;		/* mfcr */
25 	ulong	ctr;		/* mfcr */
26 	ulong	xer;		/* mfcr */
27 	ulong	sp;		/* callee saved: r1 */
28 	ulong	toc;		/* callee saved: r2 */
29 	ulong	gpr[19];	/* callee saved: r13-r31 */
30 // XXX: currently do not save vector registers or floating-point state
31 //	ulong	pad;
32 //	uvlong	fpr[18];	/* callee saved: f14-f31 */
33 //	ulong	vr[4*12];	/* callee saved: v20-v31, 256-bits each */
34 };
35 #elif defined(__sun__)
36 struct Label
37 {
38 	ulong	input[8];	/* %i registers */
39 	ulong	local[8];	/* %l registers */
40 	ulong	sp;		/* %o6 */
41 	ulong	link;		/* %o7 */
42 };
43 #else
44 #error "Unknown or unsupported architecture"
45 #endif
46 
47