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powerpc: Use generic memcpy code in little endian 

We need to fix some endian issues in our memcpy code. For now
just enable the generic memcpy routine for little endian builds.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2013-09-23 12:04:52 +10:00 committed by Benjamin Herrenschmidt
parent 7a332b0c9a
commit de577a3568
3 changed files with 12 additions and 3 deletions
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4
arch/powerpc/include/asm/string.h
View File

@ -10,7 +10,9 @@
#define __HAVE_ARCH_STRNCMP
#define __HAVE_ARCH_STRCAT
#define __HAVE_ARCH_MEMSET
#ifdef __BIG_ENDIAN__
#define __HAVE_ARCH_MEMCPY
#endif
#define __HAVE_ARCH_MEMMOVE
#define __HAVE_ARCH_MEMCMP
#define __HAVE_ARCH_MEMCHR
@ -22,7 +24,9 @@ extern int strcmp(const char *,const char *);
extern int strncmp(const char *, const char *, __kernel_size_t);
extern char * strcat(char *, const char *);
extern void * memset(void *,int,__kernel_size_t);
#ifdef __BIG_ENDIAN__
extern void * memcpy(void *,const void *,__kernel_size_t);
#endif
extern void * memmove(void *,const void *,__kernel_size_t);
extern int memcmp(const void *,const void *,__kernel_size_t);
extern void * memchr(const void *,int,__kernel_size_t);

2
arch/powerpc/kernel/ppc_ksyms.c
View File

@ -148,7 +148,9 @@ EXPORT_SYMBOL(__ucmpdi2);
#endif
long long __bswapdi2(long long);
EXPORT_SYMBOL(__bswapdi2);
#ifdef __BIG_ENDIAN__
EXPORT_SYMBOL(memcpy);
#endif
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memcmp);

9
arch/powerpc/lib/Makefile
View File

@ -15,15 +15,18 @@ obj-$(CONFIG_PPC32) += div64.o copy_32.o
obj-$(CONFIG_HAS_IOMEM) += devres.o
obj-$(CONFIG_PPC64) += copypage_64.o copyuser_64.o \
memcpy_64.o usercopy_64.o mem_64.o string.o \
usercopy_64.o mem_64.o string.o \
hweight_64.o \
copyuser_power7.o string_64.o copypage_power7.o \
memcpy_power7.o
copyuser_power7.o string_64.o copypage_power7.o
ifeq ($(CONFIG_GENERIC_CSUM),)
obj-y += checksum_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC64) += checksum_wrappers_64.o
endif
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),)
obj-$(CONFIG_PPC64) += memcpy_power7.o memcpy_64.o
endif
obj-$(CONFIG_PPC_EMULATE_SSTEP) += sstep.o ldstfp.o
ifeq ($(CONFIG_PPC64),y)