diff options
| author | Andy Polyakov <appro@openssl.org> | 2016-05-15 17:01:15 +0200 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2016-05-19 22:33:00 +0200 |
| commit | e33826f01bd78af76e0135c8dfab3387927a82bb (patch) | |
| tree | a44459e3859610fe7ce35bc4923d8af6d6110e09 /crypto/alphacpuid.pl | |
| parent | 2e6d7799ffc47604d06e0465afeb84b91aff8006 (diff) | |
Add assembly CRYPTO_memcmp.
GH: #102
Reviewed-by: Richard Levitte <levitte@openssl.org>
Diffstat (limited to 'crypto/alphacpuid.pl')
| -rw-r--r-- | crypto/alphacpuid.pl | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/crypto/alphacpuid.pl b/crypto/alphacpuid.pl index 6356b00f94..6c7fd4c9dd 100644 --- a/crypto/alphacpuid.pl +++ b/crypto/alphacpuid.pl @@ -134,6 +134,34 @@ OPENSSL_cleanse: bne $17,.Little .Ldone: ret ($26) .end OPENSSL_cleanse + +.globl CRYPTO_memcmp +.ent CRYPTO_memcmp +CRYPTO_memcmp: + .frame $30,0,$26 + .prologue 0 + xor $0,$0,$0 + beq $18,.Lno_data + + xor $1,$1,$1 + nop +.Loop_cmp: + ldq_u $2,0($16) + subq $18,1,$18 + ldq_u $3,0($17) + extbl $2,$16,$2 + lda $16,1($16) + extbl $3,$17,$3 + lda $17,1($17) + xor $3,$2,$2 + or $2,$0,$0 + bne $18,.Loop_cmp + + subq $31,$0,$0 + srl $0,63,$0 +.Lno_data: + ret ($26) +.end CRYPTO_memcmp ___ { my ($out,$cnt,$max)=("\$16","\$17","\$18"); |