mirror/openssl
2
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2025-02-17 14:32:04 +08:00
Code Issues Packages Projects Releases Wiki Activity

ec/curve448: portability fixups.

Browse Source 
SPARC condition in __SIZEOF_INT128__==16 is rather performance thing
than portability. Even though compiler advertises int128 capability,
corresponding operations are inefficient, because they are not
directly backed by instruction set.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5449)
This commit is contained in:
Andy Polyakov 2018-02-23 13:20:33 +01:00
parent e8c42b9888
commit ae1ffe0f65
2 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
crypto/ec/curve448/curve448.c
View File

@ -500,7 +500,7 @@ struct smvt_control {
int power, addend;
};
#if defined(__GNUC__) || defined(__clang__)
#if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 3))
# define NUMTRAILINGZEROS __builtin_ctz
#else
# define NUMTRAILINGZEROS numtrailingzeros

3
crypto/ec/curve448/curve448utils.h
View File

@ -23,7 +23,8 @@
* with arch_arm32.
*/
# ifndef C448_WORD_BITS
# if defined(__SIZEOF_INT128__) && (__SIZEOF_INT128__ == 16)
# if (defined(__SIZEOF_INT128__) && (__SIZEOF_INT128__ == 16)) \
&& !defined(__sparc__)
# define C448_WORD_BITS 64 /* The number of bits in a word */
# else
# define C448_WORD_BITS 32 /* The number of bits in a word */