1 files changed, 121 insertions, 0 deletions

diff --git a/arch/powerpc/lib/copypage.S b/arch/powerpc/lib/copypage.S
new file mode 100644
index 000000000000..733d61618bbf
--- /dev/null
+++ b/arch/powerpc/lib/copypage.S
@@ -0,0 +1,121 @@
+/*
+ * arch/ppc64/lib/copypage.S
+ *
+ * Copyright (C) 2002 Paul Mackerras, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+
+_GLOBAL(copy_page)
+        std     r31,-8(1)
+        std     r30,-16(1)
+        std     r29,-24(1)
+        std     r28,-32(1)
+        std     r27,-40(1)
+        std     r26,-48(1)
+        std     r25,-56(1)
+        std     r24,-64(1)
+        std     r23,-72(1)
+        std     r22,-80(1)
+        std     r21,-88(1)
+        std     r20,-96(1)
+        li      r5,4096/32 - 1
+        addi    r3,r3,-8
+        li      r12,5
+0:      addi    r5,r5,-24
+        mtctr   r12
+        ld      r22,640(4)
+        ld      r21,512(4)
+        ld      r20,384(4)
+        ld      r11,256(4)
+        ld      r9,128(4)
+        ld      r7,0(4)
+        ld      r25,648(4)
+        ld      r24,520(4)
+        ld      r23,392(4)
+        ld      r10,264(4)
+        ld      r8,136(4)
+        ldu     r6,8(4)
+        cmpwi   r5,24
+1:      std     r22,648(3)
+        std     r21,520(3)
+        std     r20,392(3)
+        std     r11,264(3)
+        std     r9,136(3)
+        std     r7,8(3)
+        ld      r28,648(4)
+        ld      r27,520(4)
+        ld      r26,392(4)
+        ld      r31,264(4)
+        ld      r30,136(4)
+        ld      r29,8(4)
+        std     r25,656(3)
+        std     r24,528(3)
+        std     r23,400(3)
+        std     r10,272(3)
+        std     r8,144(3)
+        std     r6,16(3)
+        ld      r22,656(4)
+        ld      r21,528(4)
+        ld      r20,400(4)
+        ld      r11,272(4)
+        ld      r9,144(4)
+        ld      r7,16(4)
+        std     r28,664(3)
+        std     r27,536(3)
+        std     r26,408(3)
+        std     r31,280(3)
+        std     r30,152(3)
+        stdu    r29,24(3)
+        ld      r25,664(4)
+        ld      r24,536(4)
+        ld      r23,408(4)
+        ld      r10,280(4)
+        ld      r8,152(4)
+        ldu     r6,24(4)
+        bdnz    1b
+        std     r22,648(3)
+        std     r21,520(3)
+        std     r20,392(3)
+        std     r11,264(3)
+        std     r9,136(3)
+        std     r7,8(3)
+        addi    r4,r4,640
+        addi    r3,r3,648
+        bge     0b
+        mtctr   r5
+        ld      r7,0(4)
+        ld      r8,8(4)
+        ldu     r9,16(4)
+3:      ld      r10,8(4)
+        std     r7,8(3)
+        ld      r7,16(4)
+        std     r8,16(3)
+        ld      r8,24(4)
+        std     r9,24(3)
+        ldu     r9,32(4)
+        stdu    r10,32(3)
+        bdnz    3b
+4:      ld      r10,8(4)
+        std     r7,8(3)
+        std     r8,16(3)
+        std     r9,24(3)
+        std     r10,32(3)
+9:      ld      r20,-96(1)
+        ld      r21,-88(1)
+        ld      r22,-80(1)
+        ld      r23,-72(1)
+        ld      r24,-64(1)
+        ld      r25,-56(1)
+        ld      r26,-48(1)
+        ld      r27,-40(1)
+        ld      r28,-32(1)
+        ld      r29,-24(1)
+        ld      r30,-16(1)
+        ld      r31,-8(1)
+        blr