diff options
| author | Vivek Goyal <vgoyal@redhat.com> | 2014-03-18 23:26:39 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-20 02:44:04 +0400 |
| commit | fb4cac573ef6dce8d7543b68306566561c2e5725 (patch) | |
| tree | 9eea125e337817ac302d99878e12609bb5514bde /arch/x86/boot/boot.h | |
| parent | 820e8feca06ff744f60e5036c3178dde40b91afc (diff) | |
| download | linux-fb4cac573ef6dce8d7543b68306566561c2e5725.tar.xz | |
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 <vgoyal@redhat.com>
Link: http://lkml.kernel.org/r/1395170800-11059-5-git-send-email-vgoyal@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/boot/boot.h')
| -rw-r--r-- | arch/x86/boot/boot.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h index bed9665cc7e0..bd49ec61255c 100644 --- a/arch/x86/boot/boot.h +++ b/arch/x86/boot/boot.h @@ -177,14 +177,6 @@ static inline void wrgs32(u32 v, addr_t addr) } /* Note: these only return true/false, not a signed return value! */ -static inline int memcmp(const void *s1, const void *s2, size_t len) -{ - u8 diff; - asm("repe; cmpsb; setnz %0" - : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); - return diff; -} - static inline int memcmp_fs(const void *s1, addr_t s2, size_t len) { u8 diff; |