diff --git a/src/copapy/__init__.py b/src/copapy/__init__.py
index 97d3ad7..0e20853 100644
--- a/src/copapy/__init__.py
+++ b/src/copapy/__init__.py
@@ -334,6 +334,18 @@ def get_nets(*inputs: Iterable[Iterable[Any]]) -> list[Net]:
     return list(nets)
 
 
+def get_variable_mem_layout(variable_list: list[Net], sdb: stencil_database) -> tuple[list[tuple[Net, int, int]], int]:
+    offset: int = 0
+    object_list: list[tuple[Net, int, int]] = []
+
+    for variable in variable_list:
+        lengths = sdb.var_size['dummy_' + variable.dtype]
+        object_list.append((variable, offset, lengths))
+        offset += (lengths + 3) // 4 * 4
+
+    return object_list, offset
+
+
 def compile_to_instruction_list(node_list: Iterable[Node], sdb: stencil_database) -> tuple[binw.data_writer, dict[Net, tuple[int, int, str]]]:
     variables: dict[Net, tuple[int, int, str]] = dict()
 
@@ -347,18 +359,7 @@ def compile_to_instruction_list(node_list: Iterable[Node], sdb: stencil_database
 
     dw = binw.data_writer(sdb.byteorder)
 
-    def variable_mem_layout(variable_list: list[Net]) -> tuple[list[tuple[Net, int, int]], int]:
-        offset: int = 0
-        object_list: list[tuple[Net, int, int]] = []
-
-        for variable in variable_list:
-            lengths = sdb.var_size['dummy_' + variable.dtype]
-            object_list.append((variable, offset, lengths))
-            offset += (lengths + 3) // 4 * 4
-
-        return object_list, offset
-
-    object_list, data_section_lengths = variable_mem_layout(variable_list)
+    object_list, data_section_lengths = get_variable_mem_layout(variable_list, sdb)
 
     # Deallocate old allocated memory (if existing)
     dw.write_com(binw.Command.FREE_MEMORY)
@@ -385,8 +386,7 @@ def compile_to_instruction_list(node_list: Iterable[Node], sdb: stencil_database
     patch_list: list[tuple[int, int, int]] = []
     offset = 0  # offset in generated code chunk
 
-    # print('object_addr_lookp: ', object_addr_lookp)
-
+    # assemble stencils to main program
     data = sdb.get_function_body('function_start', 'start')
     data_list.append(data)
     offset += len(data)
@@ -456,8 +456,6 @@ class Target():
         dw = binw.data_writer(self.sdb.byteorder)
         dw.write_com(binw.Command.RUN_PROG)
         dw.write_int(0)
-        #for s in self._variables:
-        #    add_read_command(dw, self._variables, s)
         dw.write_com(binw.Command.END_PROG)
         assert coparun(dw.get_data()) > 0
 
diff --git a/src/copapy/stencil_db.py b/src/copapy/stencil_db.py
index bbc1ac4..8a7d244 100644
--- a/src/copapy/stencil_db.py
+++ b/src/copapy/stencil_db.py
@@ -5,10 +5,6 @@ from enum import Enum
 
 ByteOrder = Literal['little', 'big']
 
-START_MARKER = 0xE1401F0F  # Nop on x86-64
-END_MARKER = 0xE2401F0F  # Nop on x86-64
-MARKER_LENGTH = 4
-
 # on x86_64: call or jmp instruction when tail call optimized
 LENGTH_CALL_INSTRUCTION = 5
 
@@ -69,18 +65,6 @@ def get_last_call_in_function(func: elf_symbol) -> int:
     return reloc.fields['r_offset'] - func.fields['st_value'] - reloc.fields['r_addend'] - LENGTH_CALL_INSTRUCTION
 
 
-def get_stencil_position2(func: elf_symbol) -> tuple[int, int]:
-    # Find first start marker
-    marker_index = func.data.find(START_MARKER.to_bytes(MARKER_LENGTH, func.file.byteorder))
-    start_index = 0 if marker_index < 0 else marker_index + MARKER_LENGTH
-
-    # Find last end marker
-    end_index = func.data.rfind(END_MARKER.to_bytes(MARKER_LENGTH, func.file.byteorder))
-    end_index = len(func.data) if end_index < 0 else end_index - LENGTH_CALL_INSTRUCTION
-
-    return start_index, end_index
-
-
 class stencil_database():
     """A class for loading and querying a stencil database from an ELF object file
 
@@ -140,7 +124,7 @@ class stencil_database():
                 reloc.bits,
                 reloc.fields['r_addend'])
 
-            # Exclude the call to the result_x function
+            # Exclude the call to the result_* function
             if patch.addr < end_index - start_index:
                 yield patch
 
diff --git a/tests/test_stencil_db.py b/tests/test_stencil_db.py
index ab7b4b7..80372e2 100644
--- a/tests/test_stencil_db.py
+++ b/tests/test_stencil_db.py
@@ -1,10 +1,11 @@
+from numpy import info
 from copapy import stencil_database, stencil_db
 import platform
 
+arch = platform.machine()
+sdb = stencil_database(f'src/copapy/obj/stencils_{arch}_O3.o')
 
 def test_list_symbols():
-    arch = platform.machine()
-    sdb = stencil_database(f'src/copapy/obj/stencils_{arch}_O3.o')
     print('----')
     #print(sdb.function_definitions)
     for sym_name in sdb.function_definitions.keys():
@@ -13,8 +14,6 @@ def test_list_symbols():
 
 
 def test_start_end_function():
-    arch = platform.machine()
-    sdb = stencil_database(f'src/copapy/obj/stencils_{arch}_O3.o')
     for sym_name in sdb.function_definitions.keys():
         symbol = sdb.elf.symbols[sym_name]
         print('-', sym_name, stencil_db.get_stencil_position(symbol), len(symbol.data))
@@ -24,6 +23,15 @@ def test_start_end_function():
         assert start >= 0 and end >= start and end <= len(symbol.data)
 
 
+def test_aux_functions():
+    for sym_name in sdb.function_definitions.keys():
+        symbol = sdb.elf.symbols[sym_name]
+        for reloc in symbol.relocations:
+            if reloc.symbol.info != "STT_NOTYPE":
+                print(reloc.symbol.name, reloc.symbol.info)
+
+
+
 if __name__ == "__main__":
     test_list_symbols()
     test_start_end_function()