libbb/sha1: tweak comments

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 5 insertions, 5 deletions

diff --git a/libbb/hash_md5_sha_x86-32_shaNI.S b/libbb/hash_md5_sha_x86-32_shaNI.S
index 7202c7673..6b12d1462 100644
--- a/libbb/hash_md5_sha_x86-32_shaNI.S
+++ b/libbb/hash_md5_sha_x86-32_shaNI.S
@@ -34,7 +34,7 @@
 #define MSG3            %xmm6
 #define SHUF_MASK       %xmm7
 
-        .balign 8       # allow decoders to fetch at least 2 first insns
+        .balign 8       # allow decoders to fetch at least 3 first insns
 sha1_process_block64_shaNI:
         pushl           %ebp
         movl            %esp, %ebp
@@ -44,8 +44,8 @@ sha1_process_block64_shaNI:
         /* load initial hash values */
         xor128          E0, E0
         movu128         76(%eax), ABCD
-        pinsrd          $3, 76+4*4(%eax), E0    # load to upper 32-bit word
-        shuf128_32      $0x1B, ABCD, ABCD       # 00011011: bswap
+        pinsrd          $3, 76+4*4(%eax), E0    # load to uppermost 32-bit word
+        shuf128_32      $0x1B, ABCD, ABCD       # DCBA -> ABCD
 
         mova128         PSHUFFLE_BYTE_FLIP_MASK, SHUF_MASK
 
diff --git a/libbb/hash_md5_sha_x86-64_shaNI.S b/libbb/hash_md5_sha_x86-64_shaNI.S
index 473b472f1..e2e5357e0 100644
--- a/libbb/hash_md5_sha_x86-64_shaNI.S
+++ b/libbb/hash_md5_sha_x86-64_shaNI.S
@@ -40,8 +40,8 @@ sha1_process_block64_shaNI:
 
         xor128          E0, E0
         movu128         80(%rdi), ABCD
-        pinsrd          $3, 80+4*4(%rdi), E0    # load to upper 32-bit word
-        shuf128_32      $0x1B, ABCD, ABCD       # 00011011: bswap
+        pinsrd          $3, 80+4*4(%rdi), E0    # load to uppermost 32-bit word
+        shuf128_32      $0x1B, ABCD, ABCD       # DCBA -> ABCD
 
         mova128         PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK