summaryrefslogtreecommitdiff
path: root/arch/x86/boot/boot.h
diff options
context:
space:
mode:
authorVivek Goyal <vgoyal@redhat.com>2014-03-18 23:26:39 +0400
committerH. Peter Anvin <hpa@linux.intel.com>2014-03-20 02:44:04 +0400
commitfb4cac573ef6dce8d7543b68306566561c2e5725 (patch)
tree9eea125e337817ac302d99878e12609bb5514bde /arch/x86/boot/boot.h
parent820e8feca06ff744f60e5036c3178dde40b91afc (diff)
downloadlinux-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.h8
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;