xref: /plan9/sys/src/libc/power/setjmp.s (revision 7dd7cddf99dd7472612f1413b4da293630e6b1bc)
1TEXT	setjmp(SB), 1, $-4
2	MOVW	LR, R4
3	MOVW	R1, (R3)
4	MOVW	R4, 4(R3)
5	MOVW	$0, R3
6	RETURN
7
8TEXT	longjmp(SB), 1, $-4
9	MOVW	R3, R4
10	MOVW	r+4(FP), R3
11	CMP	R3, $0
12	BNE	ok		/* ansi: "longjmp(0) => longjmp(1)" */
13	MOVW	$1, R3		/* bless their pointed heads */
14ok:	MOVW	(R4), R1
15	MOVW	4(R4), R4
16	MOVW	R4, LR
17	BR	(LR)
18
19/*
20 * trampoline functions because the kernel smashes r1
21 * in the uregs given to notejmp
22 */
23TEXT	__noterestore(SB), 1, $-4
24	MOVW	R4, R3
25	MOVW	R5, LR
26	BR	(LR)
27