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

---
 libkern/memset-386.s | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 libkern/memset-386.s

(limited to 'libkern/memset-386.s')

diff --git a/libkern/memset-386.s b/libkern/memset-386.s
new file mode 100644
index 00000000..dacb2f5f
--- /dev/null
+++ b/libkern/memset-386.s
@@ -0,0 +1,35 @@
+	TEXT	memset(SB),$0
+
+	CLD
+	MOVL	p+0(FP), DI
+	MOVBLZX	c+4(FP), AX
+	MOVL	n+8(FP), BX
+/*
+ * if not enough bytes, just copy
+ */
+	CMPL	BX, $9
+	JLS	c3
+/*
+ * build word in AX
+ */
+	MOVB	AL, AH
+	MOVL	AX, CX
+	SHLL	$16, CX
+	ORL	CX, AX
+/*
+ * copy whole longs
+ */
+c1:
+	MOVL	BX, CX
+	SHRL	$2, CX
+	ANDL	$3, BX
+	REP;	STOSL
+/*
+ * copy the rest, by bytes
+ */
+c3:
+	MOVL	BX, CX
+	REP;	STOSB
+ret:
+	MOVL	p+0(FP),AX
+	RET
-- 
cgit v1.2.3