From 37da2899f40661e3e9631e497da8dc59b971cbd0 Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Fri, 22 Dec 2006 17:07:39 +0000
Subject: 20060303a

---
 libmp/Plan9-amd64/mpdigdiv.s | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 libmp/Plan9-amd64/mpdigdiv.s

(limited to 'libmp/Plan9-amd64/mpdigdiv.s')

diff --git a/libmp/Plan9-amd64/mpdigdiv.s b/libmp/Plan9-amd64/mpdigdiv.s
new file mode 100644
index 00000000..6025d141
--- /dev/null
+++ b/libmp/Plan9-amd64/mpdigdiv.s
@@ -0,0 +1,21 @@
+TEXT	mpdigdiv(SB),$0
+
+/*	MOVL	dividend+0(FP),BX */
+	MOVL	0(RARG),AX
+	MOVL	4(RARG),DX
+	MOVL	divisor+8(FP),BX
+	MOVQ	quotient+16(FP),DI
+	XORL	CX,CX
+	CMPL	DX,BX		/* dividend >= 2^32 * divisor */
+	JHS	_divovfl
+	CMPL	BX,CX		/* divisor == 0 */
+	JE	_divovfl
+	DIVL	BX		/* AX = DX:AX/BX */
+	MOVL	AX,0(DI)
+	RET
+
+	/* return all 1's */
+_divovfl:
+	NOTL	CX
+	MOVL	CX,0(DI)
+	RET
-- 
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