From 582b1199147d6035339869c458135224e6070b60 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sat, 11 Nov 2006 00:17:57 +0100 Subject: [POWERPC] Fix return value from memcpy As pointed out by Herbert Xu , our memcpy implementation didn't return the destination pointer as its return value, and there is code in the kernel that expects that. This fixes it. Signed-off-by: Paul Mackerras Signed-off-by: Adrian Bunk --- arch/powerpc/lib/memcpy_64.S | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S index 9ccacdf5bcb9..5e00c482487b 100644 --- a/arch/powerpc/lib/memcpy_64.S +++ b/arch/powerpc/lib/memcpy_64.S @@ -13,6 +13,7 @@ .align 7 _GLOBAL(memcpy) + std r3,48(r1) /* save destination pointer for return value */ mtcrf 0x01,r5 cmpldi cr1,r5,16 neg r6,r3 # LS 3 bits = # bytes to 8-byte dest bdry @@ -40,7 +41,7 @@ _GLOBAL(memcpy) stdu r9,16(r3) bdnz 1b 3: std r8,8(r3) - beqlr + beq 3f addi r3,r3,16 ld r9,8(r4) .Ldo_tail: @@ -55,7 +56,8 @@ _GLOBAL(memcpy) 2: bf cr7*4+3,3f rotldi r9,r9,8 stb r9,0(r3) -3: blr +3: ld r3,48(r1) /* return dest pointer */ + blr .Lsrc_unaligned: srdi r6,r5,3 @@ -117,7 +119,7 @@ _GLOBAL(memcpy) 5: srd r12,r9,r11 or r12,r8,r12 std r12,24(r3) - beqlr + beq 4f cmpwi cr1,r5,8 addi r3,r3,32 sld r9,r9,r10 @@ -169,4 +171,5 @@ _GLOBAL(memcpy) 3: bf cr7*4+3,4f lbz r0,0(r4) stb r0,0(r3) -4: blr +4: ld r3,48(r1) /* return dest pointer */ + blr -- cgit v1.2.3