patch-2.4.2 linux/arch/alpha/lib/ev6-clear_page.S

• Lines: 55
• Date: Thu Feb 8 12:56:29 2001
• Orig file: v2.4.1/linux/arch/alpha/lib/ev6-clear_page.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/arch/alpha/lib/ev6-clear_page.S linux/arch/alpha/lib/ev6-clear_page.S
@@ -0,0 +1,54 @@
+/*
+ * arch/alpha/lib/ev6-clear_page.S
+ *
+ * Zero an entire page.
+ */
+
+        .text
+        .align 4
+        .global clear_page
+        .ent clear_page
+clear_page:
+        .prologue 0
+
+	lda	$0,128
+	lda	$1,125
+	addq	$16,64,$2
+	addq	$16,128,$3
+
+	addq	$16,192,$17
+	wh64	($16)
+	wh64	($2)
+	wh64	($3)
+
+1:	wh64	($17)
+	stq	$31,0($16)
+	subq	$0,1,$0
+	subq	$1,1,$1
+
+	stq	$31,8($16)
+	stq	$31,16($16)
+	addq	$17,64,$2
+	nop
+
+	stq	$31,24($16)
+	stq	$31,32($16)
+	cmovgt	$1,$2,$17
+	nop
+
+	stq	$31,40($16)
+	stq	$31,48($16)
+	nop
+	nop
+
+	stq	$31,56($16)
+	addq	$16,64,$16
+	nop
+	bne	$0,1b
+
+	ret
+	nop
+	nop
+	nop
+
+	.end clear_page