patch-2.4.20 linux-2.4.20/arch/mips64/lib/memcpy.S

• Lines: 30
• Date: Thu Nov 28 15:53:10 2002
• Orig file: linux-2.4.19/arch/mips64/lib/memcpy.S
• Orig date: Sun Sep 9 10:43:02 2001

diff -urN linux-2.4.19/arch/mips64/lib/memcpy.S linux-2.4.20/arch/mips64/lib/memcpy.S
@@ -501,7 +501,7 @@
 r_word_align:
 	beqz	t8, r_dword_align
 	 sltiu	t8, a2, 56
-	
+
 	lh	ta0, -2(a1)
 	dsubu	a2, a2, 0x2
 	sh	ta0, -2(a0)
@@ -762,8 +762,18 @@
 	dsubu	a2, AT, ta0			# a2 bytes to go
 	daddu	a0, ta0				# compute start address in a1
 	dsubu	a0, a1
-	j	__bzero
-	 move	a1, zero
+	/*
+	 * Clear len bytes starting at dst.  Can't call __bzero because it
+	 * might modify len.  An inefficient loop for these rare times...
+	 */
+	beqz	a2, 2f
+	 dsubu	a1, a2, 1
+1:	sb	zero, 0(a0)
+	daddu	a0, a0, 1
+	bnez	a1, 1b
+	 dsubu	a1, a1, 1
+2:	jr	ra
+	 nop
 
 s_fixup:
 	jr	ra