Commentary updates.

[openssl.git] / crypto / sha / asm / sha256-armv4.pl

diff --git a/crypto/sha/asm/sha256-armv4.pl b/crypto/sha/asm/sha256-armv4.pl
index d2465e3aa88f24344d4b1ba7a33bfac2960b92ec..4dd09619a6a72c8b2a2e598f0a4407242071024c 100644 (file)
--- a/crypto/sha/asm/sha256-armv4.pl
+++ b/crypto/sha/asm/sha256-armv4.pl
@@ -7,9 +7,11 @@
 # details see http://www.openssl.org/~appro/cryptogams/.
 # ====================================================================
 
 # details see http://www.openssl.org/~appro/cryptogams/.
 # ====================================================================
 

-# SHA256 block procedure for ARMv4.
+# SHA256 block procedure for ARMv4. May 2007.

 
 

-# Performance is ~2x better than gcc 3.4 generated code.
+# Performance is ~2x better than gcc 3.4 generated code and in "abso-
+# lute" terms is ~2250 cycles per 64-byte block or ~35 cycles per
+# byte.

 
 $ctx="r0";     $t0="r0";
 $inp="r1";
 
 $ctx="r0";     $t0="r0";
 $inp="r1";


@@ -165,7 +167,7 @@ $code.=<<___;
        tst     lr,#1
        moveq   pc,lr                   @ be binary compatible with V4, yet
        bx      lr                      @ interoperable with Thumb ISA:-)
        tst     lr,#1
        moveq   pc,lr                   @ be binary compatible with V4, yet
        bx      lr                      @ interoperable with Thumb ISA:-)

-.size   sha256_block_data_order,.-sha1_block_data_order
+.size   sha256_block_data_order,.-sha256_block_data_order

 .asciz  "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
 ___
 
 .asciz  "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
 ___