diff options
| author | Andy Polyakov <appro@openssl.org> | 2010-01-17 12:08:24 +0000 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2010-01-17 12:08:24 +0000 |
| commit | 4f385652043824703d293e5599301932fd64d361 (patch) | |
| tree | 06896f949c74d86775de11036fb82e962fcd6958 /crypto/bn/bn_lcl.h | |
| parent | 4407700c40f766cedccc26479d18ff2e8bc19ff4 (diff) | |
| download | openssl-4f385652043824703d293e5599301932fd64d361.tar.gz | |
bn_lcl.h: add MIPS III-specific BN_UMULT_LOHI as alternative to porting
crypto/bn/asm/mips3.s from IRIX. Performance improvement is not as
impressive as with complete assembler, but still... it's almost 2.5x
[on R5000].
Diffstat (limited to 'crypto/bn/bn_lcl.h')
| -rw-r--r-- | crypto/bn/bn_lcl.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/crypto/bn/bn_lcl.h b/crypto/bn/bn_lcl.h index 8e5e98e3f2..d7dff0d90c 100644 --- a/crypto/bn/bn_lcl.h +++ b/crypto/bn/bn_lcl.h @@ -238,7 +238,7 @@ extern "C" { # if defined(__DECC) # include <c_asm.h> # define BN_UMULT_HIGH(a,b) (BN_ULONG)asm("umulh %a0,%a1,%v0",(a),(b)) -# elif defined(__GNUC__) +# elif defined(__GNUC__) && __GNUC__>=2 # define BN_UMULT_HIGH(a,b) ({ \ register BN_ULONG ret; \ asm ("umulh %1,%2,%0" \ @@ -247,7 +247,7 @@ extern "C" { ret; }) # endif /* compiler */ # elif defined(_ARCH_PPC) && defined(__64BIT__) && defined(SIXTY_FOUR_BIT_LONG) -# if defined(__GNUC__) +# if defined(__GNUC__) && __GNUC__>=2 # define BN_UMULT_HIGH(a,b) ({ \ register BN_ULONG ret; \ asm ("mulhdu %0,%1,%2" \ @@ -257,7 +257,7 @@ extern "C" { # endif /* compiler */ # elif (defined(__x86_64) || defined(__x86_64__)) && \ (defined(SIXTY_FOUR_BIT_LONG) || defined(SIXTY_FOUR_BIT)) -# if defined(__GNUC__) +# if defined(__GNUC__) && __GNUC__>=2 # define BN_UMULT_HIGH(a,b) ({ \ register BN_ULONG ret,discard; \ asm ("mulq %3" \ @@ -280,6 +280,19 @@ extern "C" { # define BN_UMULT_HIGH(a,b) __umulh((a),(b)) # define BN_UMULT_LOHI(low,high,a,b) ((low)=_umul128((a),(b),&(high))) # endif +# elif defined(__mips) && (defined(SIXTY_FOUR_BIT) || defined(SIXTY_FOUR_BIT_LONG)) +# if defined(__GNUC__) && __GNUC__>=2 +# define BN_UMULT_HIGH(a,b) ({ \ + register BN_ULONG ret; \ + asm ("dmultu %1,%2" \ + : "=h"(ret) \ + : "r"(a), "r"(b) : "l"); \ + ret; }) +# define BN_UMULT_LOHI(low,high,a,b) \ + asm ("dmultu %2,%3" \ + : "=l"(low),"=h"(high) \ + : "r"(a), "r"(b)); +# endif # endif /* cpu */ #endif /* OPENSSL_NO_ASM */ |