From fb4cac573ef6dce8d7543b68306566561c2e5725 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Tue, 18 Mar 2014 15:26:39 -0400 Subject: x86, boot: Move memcmp() into string.h and string.c Try to treat memcmp() in same way as memcpy() and memset(). Provide a declaration in boot/string.h and by default user gets a memcmp() which maps to builtin function. Move optimized definition of memcmp() in boot/string.c. Now a user can do #undef memcmp and link against string.c to use optimzied memcmp(). It also simplifies boot/compressed/string.c where we had to redefine memcmp(). That extra definition is gone now. Signed-off-by: Vivek Goyal Link: http://lkml.kernel.org/r/1395170800-11059-5-git-send-email-vgoyal@redhat.com Signed-off-by: H. Peter Anvin --- arch/x86/boot/string.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/boot/string.h') diff --git a/arch/x86/boot/string.h b/arch/x86/boot/string.h index 10939d8da2e..725e820602b 100644 --- a/arch/x86/boot/string.h +++ b/arch/x86/boot/string.h @@ -8,6 +8,7 @@ void *memcpy(void *dst, const void *src, size_t len); void *memset(void *dst, int c, size_t len); +int memcmp(const void *s1, const void *s2, size_t len); /* * Access builtin version by default. If one needs to use optimized version, @@ -15,5 +16,6 @@ void *memset(void *dst, int c, size_t len); */ #define memcpy(d,s,l) __builtin_memcpy(d,s,l) #define memset(d,c,l) __builtin_memset(d,c,l) +#define memcmp __builtin_memcmp #endif /* BOOT_STRING_H */ -- cgit v1.2.3-70-g09d2