diff --git a/evm/src/cpu/kernel/asm/core/precompiles/rip160.asm b/evm/src/cpu/kernel/asm/core/precompiles/rip160.asm
index 7991ab42..909340c4 100644
--- a/evm/src/cpu/kernel/asm/core/precompiles/rip160.asm
+++ b/evm/src/cpu/kernel/asm/core/precompiles/rip160.asm
@@ -27,7 +27,7 @@ global precompile_rip160:
     //
     //    %stack (ctx, size) ->
     //        (
-    //        0, @SEGMENT_KERNEL_GENERAL, 200, // DST
+    //        ctx, @SEGMENT_KERNEL_GENERAL, 200, // DST
     //        ctx, @SEGMENT_CALLDATA, 0,       // SRC
     //        size, ripemd,                    // count, retdest
     //        200, size, rip160_contd          // ripemd input: virt, num_bytes, retdest
@@ -42,7 +42,7 @@ global precompile_rip160:
     SWAP6
     PUSH 200
     PUSH @SEGMENT_KERNEL_GENERAL
-    PUSH 0
+    DUP3
 
     %jump(memcpy)
 
diff --git a/evm/src/cpu/kernel/asm/core/precompiles/sha256.asm b/evm/src/cpu/kernel/asm/core/precompiles/sha256.asm
index 8739ec84..2f45995a 100644
--- a/evm/src/cpu/kernel/asm/core/precompiles/sha256.asm
+++ b/evm/src/cpu/kernel/asm/core/precompiles/sha256.asm
@@ -31,7 +31,7 @@ global precompile_sha256:
     //
     //    %stack (ctx, size) ->
     //        (
-    //        0, @SEGMENT_KERNEL_GENERAL, 1, // DST
+    //        ctx, @SEGMENT_KERNEL_GENERAL, 1, // DST
     //        ctx, @SEGMENT_CALLDATA, 0,     // SRC
     //        size, sha2,                    // count, retdest
     //        0, size, sha256_contd          // sha2 input: virt, num_bytes, retdest
@@ -47,7 +47,7 @@ global precompile_sha256:
     SWAP6
     PUSH 1
     PUSH @SEGMENT_KERNEL_GENERAL
-    PUSH 0
+    DUP3
 
     %jump(memcpy)
 
diff --git a/evm/src/cpu/kernel/asm/hash/ripemd/update.asm b/evm/src/cpu/kernel/asm/hash/ripemd/update.asm
index 63d3cff8..c5783cc7 100644
--- a/evm/src/cpu/kernel/asm/hash/ripemd/update.asm
+++ b/evm/src/cpu/kernel/asm/hash/ripemd/update.asm
@@ -117,7 +117,7 @@ buffer_update:
     DUP2
     DUP2
     // stack: get, set, get  , set  , times  , retdest
-    %mupdate_kernel_general
+    %mupdate_current_general
     // stack:           get  , set  , times  , retdest
     %increment
     SWAP1 
diff --git a/evm/src/cpu/kernel/asm/memory/core.asm b/evm/src/cpu/kernel/asm/memory/core.asm
index bdaac62e..41d4927b 100644
--- a/evm/src/cpu/kernel/asm/memory/core.asm
+++ b/evm/src/cpu/kernel/asm/memory/core.asm
@@ -194,6 +194,16 @@
     // stack: (empty)
 %endmacro
 
+// set offset i to offset j in kernel general
+%macro mupdate_current_general
+    // stack: j, i
+    %mload_current_general
+    // stack: x, i
+    SWAP1
+    %mstore_current_general
+    // stack: (empty)
+%endmacro
+
 // Load a single value from the given segment of kernel (context 0) memory.
 %macro mload_kernel(segment)
     // stack: offset
@@ -409,16 +419,6 @@
     %mstore_kernel_u32(@SEGMENT_KERNEL_GENERAL)
 %endmacro
 
-// set offset i to offset j in kernel general
-%macro mupdate_kernel_general
-    // stack: j, i
-    %mload_kernel_general
-    // stack: x, i
-    SWAP1
-    %mstore_kernel_general
-    // stack: (empty)
-%endmacro
-
 // Load a single value from kernel general 2 memory.
 %macro mload_kernel_general_2
     // stack: offset