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| author |   Ulrich Drepper <drepper@gmail.com> | 2011-07-02 12:30:03 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-07-02 12:30:03 -0400 |
| commit | fcfc776bc6242fdefde0efd7b0c315fbeca08555 (patch) | |
| tree | c46c6b25047a2ed2f6baea7b76985f1d7bec3c4c /crypt/sha512.h | |
| parent | nscd cleanups (diff) | |
| download | glibc-fcfc776bc6242fdefde0efd7b0c315fbeca08555.tar.gz glibc-fcfc776bc6242fdefde0efd7b0c315fbeca08555.tar.bz2 glibc-fcfc776bc6242fdefde0efd7b0c315fbeca08555.zip | |
Optimize long-word additions in SHA implementation
Diffstat (limited to 'crypt/sha512.h')
| -rw-r--r-- | crypt/sha512.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/crypt/sha512.h b/crypt/sha512.h index 9952c5f862..90e55dccb2 100644 --- a/crypt/sha512.h +++ b/crypt/sha512.h @@ -1,6 +1,6 @@ /* Declaration of functions and data types used for SHA512 sum computing library functions. - Copyright (C) 2007 Free Software Foundation, Inc. + Copyright (C) 2007, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -24,6 +24,9 @@ #include <limits.h> #include <stdint.h> #include <stdio.h> +#ifdef _LIBC +# include <bits/wordsize.h> +#endif /* Structure to save state of computation between the single steps. */ @@ -31,7 +34,14 @@ struct sha512_ctx { uint64_t H[8]; - uint64_t total[2]; + union + { +#if defined __GNUC__ && __WORDSIZE == 64 +# define USE_TOTAL128 + unsigned int total128 __attribute__ ((__mode__ (TI))); +#endif + uint64_t total[2]; + }; uint64_t buflen; char buffer[256] __attribute__ ((__aligned__ (__alignof__ (uint64_t)))); }; |