shithub: riscv

ref: 1b09060f468f530af2f4ef75441a40084e912e54
dir: /sys/src/libc/386/setjmp.s/

View raw version 
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