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avoid BSWAP assembly for ARM <= v6

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This commit is contained in:
Brent Cook 2016-07-17 18:12:23 -05:00
parent 3a193a58d4
commit f6582d1d76
1 changed files with 21 additions and 0 deletions
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21
patches/modes_lcl.h Normal file
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@ -0,0 +1,21 @@
--- openbsd/src/lib/libssl/src/crypto/modes/modes_lcl.h Sat Dec 6 17:15:50 2014
+++ crypto/modes/modes_lcl.h Sun Jul 17 17:45:27 2016
@@ -43,14 +43,16 @@
asm ("bswapl %0" \
: "+r"(ret)); ret; })
# elif (defined(__arm__) || defined(__arm)) && !defined(__STRICT_ALIGNMENT)
-# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \
+# if (__ARM_ARCH >= 6)
+# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \
asm ("rev %0,%0; rev %1,%1" \
: "+r"(hi),"+r"(lo)); \
(u64)hi<<32|lo; })
-# define BSWAP4(x) ({ u32 ret; \
+# define BSWAP4(x) ({ u32 ret; \
asm ("rev %0,%1" \
: "=r"(ret) : "r"((u32)(x))); \
ret; })
+# endif
# endif
#endif
#endif