xref: /plan9-contrib/sys/src/ape/lib/ap/amd64/setjmp.s (revision 272efad760864ee41cfe633b56aea9b4f5cf3ae7)
1TEXT	longjmp(SB), $0
2	MOVL	r+8(FP), AX
3	CMPL	AX, $0
4	JNE	ok		/* ansi: "longjmp(0) => longjmp(1)" */
5	MOVL	$1, AX		/* bless their pointed heads */
6ok:
7	MOVQ	0(RARG), SP	/* restore sp */
8	MOVQ	8(RARG), BX	/* put return pc on the stack */
9	MOVQ	BX, 0(SP)
10	RET
11
12TEXT	setjmp(SB), $0
13	MOVQ	SP, 0(RARG)	/* store sp */
14	MOVQ	0(SP), BX	/* store return pc */
15	MOVQ	BX, 8(RARG)
16	MOVL	$0, AX		/* return 0 */
17	RET
18
19TEXT	sigsetjmp(SB), $0
20	MOVL	savemask+8(FP), BX
21	MOVL	BX, 0(RARG)
22	MOVL	$_psigblocked(SB), 4(RARG)
23	MOVQ	SP, 8(RARG)	/* store sp */
24	MOVQ	0(SP), BX	/* store return pc */
25	MOVQ	BX, 16(RARG)
26	MOVL	$0, AX	/* return 0 */
27	RET
28