shithub: riscv

ref: b51b623725ce394a1f9f12686f043c1cc3bba7c9
dir: /sys/src/libc/386/setjmp.s/

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TEXT	longjmp(SB), $0
	MOVL	r+4(FP), AX
	CMPL	AX, $0
	JNE	ok		/* ansi: "longjmp(0) => longjmp(1)" */
	MOVL	$1, AX		/* bless their pointed heads */
ok:	MOVL	l+0(FP), BX
	MOVL	0(BX), SP	/* restore sp */
	MOVL	4(BX), BX	/* put return pc on the stack */
	MOVL	BX, 0(SP)
	RET

TEXT	setjmp(SB), $0
	MOVL	l+0(FP), AX
	MOVL	SP, 0(AX)	/* store sp */
	MOVL	0(SP), BX	/* store return pc */
	MOVL	BX, 4(AX)
	MOVL	$0, AX		/* return 0 */
	RET