From 5cf8bf2ba38ac03d716bcfd2310b2a0985e38ec6 Mon Sep 17 00:00:00 2001
From: Nicholas Ward <npward@berkeley.edu>
Date: Fri, 9 Sep 2022 13:47:37 -0700
Subject: [PATCH] more %stack sha2 cleanup

---
 evm/src/cpu/kernel/asm/sha2/memory.asm | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/evm/src/cpu/kernel/asm/sha2/memory.asm b/evm/src/cpu/kernel/asm/sha2/memory.asm
index 9c68f208..843461e7 100644
--- a/evm/src/cpu/kernel/asm/sha2/memory.asm
+++ b/evm/src/cpu/kernel/asm/sha2/memory.asm
@@ -119,10 +119,7 @@
     PUSH 8
     SHL
     // stack: 1 << 8, value, offset
-    SWAP1
-    // stack: value, 1 << 8, offset
-    DUP2
-    DUP2
+    %stack (shift, val, offset) -> (val, shift, val, shift, offset)
     // stack: value, 1 << 8, value, 1 << 8, offset
     MOD
     // stack: c_0 = value % (1 << 8), value, 1 << 8, offset