--- /dev/null
+++ libmalloc/libmalloc-646.0.13/tests/create_pgm_plist.py
@@ -0,0 +1,88 @@
+import argparse
+import plistlib
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        description='Create PGM plist based on existing BATS plist')
+    parser.add_argument('orig_plist')
+    parser.add_argument('pgm_plist')
+    return parser.parse_args()
+
+
+# Exclude tests with the following characteristic from being re-run under PGM:
+# - T_META_NAMESPACE("pgm"): PGM implementation tests, name starts with "libmalloc.pgm"
+# - T_META_ENVVAR("MallocProbGuard=X"): these tests already specify PGM state
+# - T_META_TAG_XZONE_ONLY: tests specific characteristics of xzone only
+def pgm_compatible(test):
+    if test.get('TestName', '').startswith('libmalloc.pgm'):
+        return False
+    if has_env_var(test, 'MallocProbGuard'):
+        return False
+    tags = test.get('Tags', [])
+    incompatible_tags = {'xzone_only'}
+    if any((t in incompatible_tags) for t in tags):
+        return False
+    return True
+
+
+def filter_tests(plist):
+    plist['Tests'] = list(filter(pgm_compatible, plist['Tests']))
+
+
+def is_prone_to_timeout(test):
+    return test.get('TestName', '') in {
+        'libmalloc.threaded_stress_fork',
+        'libmalloc.threaded_stress_fork_small',
+    }
+
+
+def add_pgm_activation(plist):
+    for test in plist['Tests']:
+        # Add PGM env vars
+        extend_env(test, ['MallocProbGuard=1'])
+        if is_prone_to_timeout(test):
+            test['Timeout'] = 10 * test['Timeout']
+        else:
+            extend_env(test, ['MallocProbGuardSampleRate=5'])
+
+        # Adapt `TestName` and `CanonicalName`
+        suffix = '.pgm'
+        test['TestName'] = test.get('TestName', '') + suffix
+        test['CanonicalName'] = test.get('CanonicalName', '') + suffix
+
+        # Run perf tests, but skip comparison to baseline
+        tags = test.get('Tags', [])
+        if 'perf' in tags:
+            tags.remove('perf')
+
+
+# Note: The env is a list of `key=value`, not a dictionary
+def has_env_var(test, env_var_name):
+    env = test.get('ShellEnv', [])
+    key = env_var_name + '='  # exact match required
+    return any(v.startswith(key) for v in env)
+
+
+def extend_env(test, env_vars):
+    if 'ShellEnv' in test:
+        test['ShellEnv'].extend(env_vars)
+    else:
+        test['ShellEnv'] = env_vars
+
+
+def main():
+    args = parse_args()
+
+    with open(args.orig_plist, 'rb') as f:
+        plist = plistlib.load(f)
+
+    filter_tests(plist)
+    add_pgm_activation(plist)
+
+    with open(args.pgm_plist, 'wb') as f:
+        plistlib.dump(plist, f, fmt=plistlib.FMT_BINARY)
+
+
+if __name__ == '__main__':
+    main()