diff options
Diffstat (limited to 'arch/x86/boot/compressed/string.c')
| -rw-r--r-- | arch/x86/boot/compressed/string.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/string.c b/arch/x86/boot/compressed/string.c index 19b3e693cd7..ffb9c5c9d74 100644 --- a/arch/x86/boot/compressed/string.c +++ b/arch/x86/boot/compressed/string.c @@ -1,2 +1,11 @@ #include "misc.h" + +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; +} + #include "../string.c" |