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-rw-r--r--arch/alpha/lib/copy_page.S49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/alpha/lib/copy_page.S b/arch/alpha/lib/copy_page.S
new file mode 100644
index 000000000000..9f3b97459cc6
--- /dev/null
+++ b/arch/alpha/lib/copy_page.S
@@ -0,0 +1,49 @@
+/*
+ * arch/alpha/lib/copy_page.S
+ *
+ * Copy an entire page.
+ */
+
+ .text
+ .align 4
+ .global copy_page
+ .ent copy_page
+copy_page:
+ .prologue 0
+
+ lda $18,128
+ nop
+ unop
+ nop
+
+1: ldq $0,0($17)
+ ldq $1,8($17)
+ ldq $2,16($17)
+ ldq $3,24($17)
+
+ ldq $4,32($17)
+ ldq $5,40($17)
+ ldq $6,48($17)
+ ldq $7,56($17)
+
+ stq $0,0($16)
+ subq $18,1,$18
+ stq $1,8($16)
+ addq $17,64,$17
+
+ stq $2,16($16)
+ stq $3,24($16)
+ stq $4,32($16)
+ stq $5,40($16)
+
+ stq $6,48($16)
+ stq $7,56($16)
+ addq $16,64,$16
+ bne $18, 1b
+
+ ret
+ nop
+ unop
+ nop
+
+ .end copy_page