diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 19:12:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 19:12:33 -0800 |
| commit | bcede2f64a3b5cb50c0bdec1553ab480fd75d659 (patch) | |
| tree | b98e55bf2eea83bb5f6805abb210c5ea8625b550 /arch/x86/boot/compressed/string.c | |
| parent | d0b9706c20ebb4ba181dc26e52ac9a6861abf425 (diff) | |
| parent | 2d2da60fb40a80cc59383121ccf763e0e0e8a42a (diff) | |
Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, efi: Break up large initrd reads
x86, efi: EFI boot stub support
efi: Add EFI file I/O data types
efi.h: Add boottime->locate_handle search types
efi.h: Add graphics protocol guids
efi.h: Add allocation types for boottime->allocate_pages()
efi.h: Add efi_image_loaded_t
efi.h: Add struct definition for boot time services
x86: Don't use magic strings for EFI loader signature
x86: Add missing bzImage fields to struct setup_header
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 19b3e693cd72..ffb9c5c9d748 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" |