From 32b8b3599b82de77f0b4a5305999072a84eec437 Mon Sep 17 00:00:00 2001
From: Dmitry Vagner <typecat@Dmitrys-MacBook-Pro.local>
Date: Mon, 3 Oct 2022 13:17:29 -0700
Subject: [PATCH] move buffer_update to memory module

---
 evm/src/cpu/kernel/asm/ripemd/memory.asm | 26 ++++++++++++++++++++++++
 evm/src/cpu/kernel/asm/ripemd/update.asm | 26 ------------------------
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/evm/src/cpu/kernel/asm/ripemd/memory.asm b/evm/src/cpu/kernel/asm/ripemd/memory.asm
index 69b434df..e070c235 100644
--- a/evm/src/cpu/kernel/asm/ripemd/memory.asm
+++ b/evm/src/cpu/kernel/asm/ripemd/memory.asm
@@ -79,6 +79,32 @@ store_input:
     // stack:                              length
     %jump(ripemd_init)
 
+/// def buffer_update(get, set, times):
+///     for i in range(times):
+///         buffer[set+i] = bytestring[get+i]
+
+global buffer_update:
+    // stack:           get  , set  , times  , retdest
+    DUP2
+    DUP2
+    // stack: get, set, get  , set  , times  , retdest
+    %mupdate_kernel_general
+    // stack:           get  , set  , times  , retdest
+    %add_const(1)
+    SWAP1 
+    %add_const(1)
+    SWAP1
+    SWAP2
+    %sub_const(1)
+    SWAP2
+    // stack:           get+1, set+1, times-1, retdest
+    DUP3
+    %jumpi(buffer_update)
+    // stack:           get  , set  , 0      , retdest
+    %pop3
+    JUMP
+    
+
 %macro store_zeros(N, label)
     // stack: i
     %stack (i) -> ($N, i, 0, i)
diff --git a/evm/src/cpu/kernel/asm/ripemd/update.asm b/evm/src/cpu/kernel/asm/ripemd/update.asm
index df52d175..41fecd40 100644
--- a/evm/src/cpu/kernel/asm/ripemd/update.asm
+++ b/evm/src/cpu/kernel/asm/ripemd/update.asm
@@ -107,29 +107,3 @@ update_2:
     %stack (offset, STATE: 5) -> (STATE, offset, update_2)
     // stack: STATE, offset, update_2, shift, need, have, count, length, virt, retdest
     %jump(compress)
-
-
-/// def buffer_update(get, set, times):
-///     for i in range(times):
-///         buffer[set+i] = bytestring[get+i]
-
-buffer_update:
-    // stack:           get  , set  , times  , retdest
-    DUP2
-    DUP2
-    // stack: get, set, get  , set  , times  , retdest
-    %mupdate_kernel_general
-    // stack:           get  , set  , times  , retdest
-    %add_const(1)
-    SWAP1 
-    %add_const(1)
-    SWAP1
-    SWAP2
-    %sub_const(1)
-    SWAP2
-    // stack:           get+1, set+1, times-1, retdest
-    DUP3
-    %jumpi(buffer_update)
-    // stack:           get  , set  , 0      , retdest
-    %pop3
-    JUMP