ppc64: use memcpy_64.S from powerpc/lib

since it is identical to mempcy.S from ppc64/lib.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

arch/powerpc/lib/Makefile

@@ -5,11 +5,11 @@
 ifeq ($(CONFIG_PPC_MERGE),y)
 obj-y			:= strcase.o string.o
 obj-$(CONFIG_PPC32)	+= div64.o copy_32.o checksum_32.o
-obj-$(CONFIG_PPC64)	+= memcpy_64.o \
-			   usercopy_64.o sstep.o mem_64.o
+obj-$(CONFIG_PPC64)	+= usercopy_64.o sstep.o mem_64.o
 endif
 
-obj-$(CONFIG_PPC64)	+= checksum_64.o copypage_64.o copyuser_64.o
+obj-$(CONFIG_PPC64)	+= checksum_64.o copypage_64.o copyuser_64.o \
+			   memcpy_64.o
 obj-$(CONFIG_PPC_ISERIES) += e2a.o
 ifeq ($(CONFIG_PPC64),y)
 obj-$(CONFIG_SMP)	+= locks.o

arch/ppc64/lib/Makefile

@@ -3,6 +3,6 @@
 #
 
 lib-y := string.o strcase.o
-lib-y += memcpy.o usercopy.o
+lib-y += usercopy.o
 
 lib-$(CONFIG_DEBUG_KERNEL) += sstep.o

arch/ppc64/lib/memcpy.S

-/*
- * arch/ppc64/lib/memcpy.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>
-
-	.align	7
-_GLOBAL(memcpy)
-	mtcrf	0x01,r5
-	cmpldi	cr1,r5,16
-	neg	r6,r3		# LS 3 bits = # bytes to 8-byte dest bdry
-	andi.	r6,r6,7
-	dcbt	0,r4
-	blt	cr1,.Lshort_copy
-	bne	.Ldst_unaligned
-.Ldst_aligned:
-	andi.	r0,r4,7
-	addi	r3,r3,-16
-	bne	.Lsrc_unaligned
-	srdi	r7,r5,4
-	ld	r9,0(r4)
-	addi	r4,r4,-8
-	mtctr	r7
-	andi.	r5,r5,7
-	bf	cr7*4+0,2f
-	addi	r3,r3,8
-	addi	r4,r4,8
-	mr	r8,r9
-	blt	cr1,3f
-1:	ld	r9,8(r4)
-	std	r8,8(r3)
-2:	ldu	r8,16(r4)
-	stdu	r9,16(r3)
-	bdnz	1b
-3:	std	r8,8(r3)
-	beqlr
-	addi	r3,r3,16
-	ld	r9,8(r4)
-.Ldo_tail:
-	bf	cr7*4+1,1f
-	rotldi	r9,r9,32
-	stw	r9,0(r3)
-	addi	r3,r3,4
-1:	bf	cr7*4+2,2f
-	rotldi	r9,r9,16
-	sth	r9,0(r3)
-	addi	r3,r3,2
-2:	bf	cr7*4+3,3f
-	rotldi	r9,r9,8
-	stb	r9,0(r3)
-3:	blr
-
-.Lsrc_unaligned:
-	srdi	r6,r5,3
-	addi	r5,r5,-16
-	subf	r4,r0,r4
-	srdi	r7,r5,4
-	sldi	r10,r0,3
-	cmpdi	cr6,r6,3
-	andi.	r5,r5,7
-	mtctr	r7
-	subfic	r11,r10,64
-	add	r5,r5,r0
-
-	bt	cr7*4+0,0f
-
-	ld	r9,0(r4)	# 3+2n loads, 2+2n stores
-	ld	r0,8(r4)
-	sld	r6,r9,r10
-	ldu	r9,16(r4)
-	srd	r7,r0,r11
-	sld	r8,r0,r10
-	or	r7,r7,r6
-	blt	cr6,4f
-	ld	r0,8(r4)
-	# s1<< in r8, d0=(s0<<|s1>>) in r7, s3 in r0, s2 in r9, nix in r6 & r12
-	b	2f
-
-0:	ld	r0,0(r4)	# 4+2n loads, 3+2n stores
-	ldu	r9,8(r4)
-	sld	r8,r0,r10
-	addi	r3,r3,-8
-	blt	cr6,5f
-	ld	r0,8(r4)
-	srd	r12,r9,r11
-	sld	r6,r9,r10
-	ldu	r9,16(r4)
-	or	r12,r8,r12
-	srd	r7,r0,r11
-	sld	r8,r0,r10
-	addi	r3,r3,16
-	beq	cr6,3f
-
-	# d0=(s0<<|s1>>) in r12, s1<< in r6, s2>> in r7, s2<< in r8, s3 in r9
-1:	or	r7,r7,r6
-	ld	r0,8(r4)
-	std	r12,8(r3)
-2:	srd	r12,r9,r11
-	sld	r6,r9,r10
-	ldu	r9,16(r4)
-	or	r12,r8,r12
-	stdu	r7,16(r3)
-	srd	r7,r0,r11
-	sld	r8,r0,r10
-	bdnz	1b
-
-3:	std	r12,8(r3)
-	or	r7,r7,r6
-4:	std	r7,16(r3)
-5:	srd	r12,r9,r11
-	or	r12,r8,r12
-	std	r12,24(r3)
-	beqlr
-	cmpwi	cr1,r5,8
-	addi	r3,r3,32
-	sld	r9,r9,r10
-	ble	cr1,.Ldo_tail
-	ld	r0,8(r4)
-	srd	r7,r0,r11
-	or	r9,r7,r9
-	b	.Ldo_tail
-
-.Ldst_unaligned:
-	mtcrf	0x01,r6		# put #bytes to 8B bdry into cr7
-	subf	r5,r6,r5
-	li	r7,0
-	cmpldi	r1,r5,16
-	bf	cr7*4+3,1f
-	lbz	r0,0(r4)
-	stb	r0,0(r3)
-	addi	r7,r7,1
-1:	bf	cr7*4+2,2f
-	lhzx	r0,r7,r4
-	sthx	r0,r7,r3
-	addi	r7,r7,2
-2:	bf	cr7*4+1,3f
-	lwzx	r0,r7,r4
-	stwx	r0,r7,r3
-3:	mtcrf	0x01,r5
-	add	r4,r6,r4
-	add	r3,r6,r3
-	b	.Ldst_aligned
-
-.Lshort_copy:
-	bf	cr7*4+0,1f
-	lwz	r0,0(r4)
-	lwz	r9,4(r4)
-	addi	r4,r4,8
-	stw	r0,0(r3)
-	stw	r9,4(r3)
-	addi	r3,r3,8
-1:	bf	cr7*4+1,2f
-	lwz	r0,0(r4)
-	addi	r4,r4,4
-	stw	r0,0(r3)
-	addi	r3,r3,4
-2:	bf	cr7*4+2,3f
-	lhz	r0,0(r4)
-	addi	r4,r4,2
-	sth	r0,0(r3)
-	addi	r3,r3,2
-3:	bf	cr7*4+3,4f
-	lbz	r0,0(r4)
-	stb	r0,0(r3)
-4:	blr