diff --git a/tools/bind-ca-metal-components.py b/tools/bind-ca-metal-components.py
index 6d458bf..e716729 100755
--- a/tools/bind-ca-metal-components.py
+++ b/tools/bind-ca-metal-components.py
@@ -12,6 +12,8 @@ import hashlib
 import json
 import subprocess
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 ORIGINAL = ROOT.parent / 'Snapintosh'
 sha = lambda p: hashlib.sha256(Path(p).read_bytes()).hexdigest()
@@ -102,7 +104,7 @@ kext = ROOT / 'build/ca-integrated-kext-20260928-v1/AdrenoX2.kext'
 bind(kext / 'Contents/MacOS/AdrenoX2', '54d32bb79af174703a17a21286231b6af6d555ca67d57d7662815a9c4717a9d1')
 display = ROOT / 'gpu/adreno-kext/kext/src/AdrenoDisplay.cpp'
 accepted = ROOT.parent / 'Snapintosh-adreno-fill/gpu/adreno-kext/kext/src/AdrenoDisplay.cpp'
-assert bind(display) == bind(accepted)
+assert [bind(p) for p in source_files(display)] == [bind(p) for p in source_files(accepted)]   # with its parts
 assert b'AdrenoIBCopyABI' in (kext / 'Contents/MacOS/AdrenoX2').read_bytes()
 for tree in (bundle, ROOT / 'gpu/adreno-kext/kext', ROOT / 'gpu/adreno-kext/plugin'):
     for path in tree.rglob('*'):
diff --git a/tools/bind-composite-metal-components.py b/tools/bind-composite-metal-components.py
index ead5593..c9f37d3 100755
--- a/tools/bind-composite-metal-components.py
+++ b/tools/bind-composite-metal-components.py
@@ -13,6 +13,8 @@ import hashlib
 import json
 import subprocess
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 NETWORK = ROOT.parent / 'Snapintosh-adreno-buffer-textures'
 PIPELINE = ROOT.parent / 'Snapintosh-adreno-pipeline'
@@ -67,8 +69,9 @@ def main():
     kext = Path(network['kext_bundle'])
     bind(kext / 'Contents/MacOS/AdrenoX2', network['kext_sha256'])
     assert b'AdrenoIBCopyABI' in (kext / 'Contents/MacOS/AdrenoX2').read_bytes()
-    assert bind(ROOT / 'gpu/adreno-kext/kext/src/AdrenoDisplay.cpp') == bind(
-        ROOT.parent / 'Snapintosh-adreno-fill/gpu/adreno-kext/kext/src/AdrenoDisplay.cpp')
+    display_unit = source_files(ROOT / 'gpu/adreno-kext/kext/src/AdrenoDisplay.cpp')   # with its ordered parts
+    accepted_unit = source_files(ROOT.parent / 'Snapintosh-adreno-fill/gpu/adreno-kext/kext/src/AdrenoDisplay.cpp')
+    assert [bind(p) for p in display_unit] == [bind(p) for p in accepted_unit]
 
     native_path = ROOT / 'build/qc-pipelines-composite-20260928-v1.json'
     native = read(native_path,
diff --git a/tools/build-panel-mode-candidate.py b/tools/build-panel-mode-candidate.py
index 584f72e..65d78b4 100755
--- a/tools/build-panel-mode-candidate.py
+++ b/tools/build-panel-mode-candidate.py
@@ -8,6 +8,8 @@ from pathlib import Path
 import shutil
 import subprocess
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 BASELINE = ROOT / 'build/virtual-ethernet-clock-20260927/native-link-v3'
 SOURCE = ROOT.parent / 'Snapintosh-adreno-clear'
@@ -32,7 +34,8 @@ def main():
     for name, expected in objects.items():
         assert sha(BASELINE / name) == expected, name
     source = SOURCE / 'gpu/adreno-kext/kext/src/AdrenoDisplay.cpp'
-    inputs = {str(source): sha(source), str(BASELINE / 'qualification.json'): sha(BASELINE / 'qualification.json')}
+    inputs = {str(f): sha(f) for f in source_files(source)}      # the unit: AdrenoDisplay.cpp and its parts
+    inputs[str(BASELINE / 'qualification.json')] = sha(BASELINE / 'qualification.json')
     for folder in ['gpu/adreno-kext/kext/src', 'gpu/adreno-kext/kext/include', 'gpu/adreno-kext/include']:
         for f in (SOURCE / folder).glob('*.h'):
             inputs[str(f)] = sha(f)
diff --git a/tools/qualify-adreno-gui-components.py b/tools/qualify-adreno-gui-components.py
index a26f316..e9cccfc 100755
--- a/tools/qualify-adreno-gui-components.py
+++ b/tools/qualify-adreno-gui-components.py
@@ -12,6 +12,8 @@ import sys
 import time
 from source_text import read_source
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 sha = lambda p: hashlib.sha256(p.read_bytes()).hexdigest()
 
@@ -146,7 +148,8 @@ def main():
     bind(Path(abi['kernelcache']))
     for name in ['tools/check-iomfb-vtable.py', 'tools/test-display-profile.py',
             'gpu/adreno-kext/kext/src/AdrenoDisplay.cpp', 'gpu/adreno-kext/kext/src/AdrenoDisplay.h']:
-        bind(ROOT/name)
+        for path in source_files(ROOT/name):              # a split unit binds its ordered parts too
+            bind(path)
     out = args.output.resolve()
     out.mkdir(parents=True, exist_ok=False)
     command = [sys.executable, 'tools/test-display-profile.py', '--firmware', str(original/'downloads/extracted/j700ap')]
diff --git a/tools/qualify-adreno-ib-command.py b/tools/qualify-adreno-ib-command.py
index 1f35c81..67345a0 100755
--- a/tools/qualify-adreno-ib-command.py
+++ b/tools/qualify-adreno-ib-command.py
@@ -40,6 +40,8 @@ import subprocess
 import sys
 from source_text import source_files
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 Q1N1 = ROOT.parent / 'q1n1' / 'tools'
 PLANS = ROOT / 'build' / 'adreno-pipeline-compiler-20260927'
@@ -665,7 +667,8 @@ def main():
     if monitor:
         inputs.append('compat/adreno-ib.h')
     for kext_source in ('AdrenoX2.cpp', 'AdrenoX2.h', 'AdrenoSegmentList.cpp', 'AdrenoMemoryMap.cpp'):
-        inputs.append(f'gpu/adreno-kext/kext/src/{kext_source}')
+        for path in source_files(ROOT / f'gpu/adreno-kext/kext/src/{kext_source}'):   # with its ordered parts
+            inputs.append(str(path.relative_to(ROOT)))
     inputs.append('gpu/adreno-kext/kext/build.sh')
     inputs += [str(q.relative_to(ROOT)) for p in inputs if p.endswith('.c') for q in source_files(ROOT / p)[1:]]
     external = {str(p): sha(p) for p in [PLANS / 'draw-plan-v2/draw.ib.bin', PLANS / 'draw-plan-v2/references.json',
diff --git a/tools/qualify-adreno-resource-kext.py b/tools/qualify-adreno-resource-kext.py
index 75d8c02..a0f84d5 100755
--- a/tools/qualify-adreno-resource-kext.py
+++ b/tools/qualify-adreno-resource-kext.py
@@ -13,6 +13,8 @@ import re
 import struct
 import subprocess
 
+from source_text import source_files
+
 ROOT = Path(__file__).resolve().parents[1]
 KDK = Path('/Library/Developer/KDKs/KDK_27.0_26A428.kdk/System/Library')
 sha = lambda data: hashlib.sha256(data).hexdigest()
@@ -152,8 +154,10 @@ def main():
     funcs = {f['symbol']: f for im in native['images'] for f in im['functions']}
     update = funcs['__ZN14IOGPUMemoryMap10update_pteEjP18IOMemoryDescriptorS1_']['instructions']
     assert any(i['mnemonic'] == 'tbnz' and i['operands'].startswith('w0, #0,') for i in update)
+    # AdrenoX2.cpp and its ordered parts
+    x2_unit = [str(p.relative_to(ROOT)) for p in source_files(ROOT/'gpu/adreno-kext/kext/src/AdrenoX2.cpp')]
     sources = ['compat/adreno-resource.c','compat/adreno-resource.h','compat/adreno-guest.h',
-        'gpu/adreno-kext/kext/src/AdrenoMemoryMap.cpp','gpu/adreno-kext/kext/src/AdrenoX2.cpp',
+        'gpu/adreno-kext/kext/src/AdrenoMemoryMap.cpp',*x2_unit,
         'gpu/adreno-kext/kext/src/AdrenoX2.h','gpu/adreno-kext/kext/include/IOGPUFamily26A428.h',
         'gpu/adreno-kext/kext/Info.plist','gpu/adreno-kext/kext/build.sh',
         'tools/trace-adreno-resource-kext.py','tools/trace-adreno-memory-map.py',
diff --git a/tools/test-adreno-residency.py b/tools/test-adreno-residency.py
index 1c5e55d..13c7f85 100755
--- a/tools/test-adreno-residency.py
+++ b/tools/test-adreno-residency.py
@@ -31,6 +31,8 @@ import sys
 import tempfile
 import unittest
 
+from source_text import read_source
+
 ROOT = Path(__file__).resolve().parents[1]
 CORE = ROOT / 'compat/adreno-resource.c'
 HARNESS = ROOT / 'tools/test-adreno-residency.c'
@@ -527,7 +529,7 @@ class VAKext(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls.source = MAP.read_text()
-        cls.display = (KEXT / 'src/AdrenoDisplay.cpp').read_text()
+        cls.display = read_source(KEXT / 'src/AdrenoDisplay.cpp')     # with its ordered parts
 
     def test_filler_is_read_only_and_never_released(self):
         insert = between(self.source, 'static int fillerInsert(')