From d03dd1665faed84bea072e63852e2f89923d3731 Mon Sep 17 00:00:00 2001
From: Sun Yimin <emmansun@users.noreply.github.com>
Date: Wed, 10 Mar 2021 17:22:08 +0800
Subject: [PATCH] =?UTF-8?q?Updated=20SM3=E6=80=A7=E8=83=BD=E4=BC=98?=
 =?UTF-8?q?=E5=8C=96=20(markdown)?=
MIME-Version: 1.0
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---
 SM3性能优化.md | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/SM3性能优化.md b/SM3性能优化.md
index 0962212..4f25079 100644
--- a/SM3性能优化.md
+++ b/SM3性能优化.md
@@ -150,7 +150,14 @@ SM3可以对Wt XOR Wt+4进行并行计算，
 
 这是循环右移，SM3使用循环左移，没看到有ROLXL这样的指令，应该能传入负数来实现，
 
-
+    Operation
+    IF (OperandSize = 32)
+      y ← imm8 AND 1FH;
+      DEST ← (SRC >> y) | (SRC << (32-y));
+    ELSEIF (OperandSize = 64 )
+      y ← imm8 AND 3FH;
+      DEST ← (SRC >> y) | (SRC << (64-y));
+    ENDIF	
 
 实在不行只能用MOVL + ROLL来处理，但性能就没啥提高了。