externals: Update zydis to 4.0.0

Merge commit '6fa8d51479e9a5542c67bec715a1f68e7ed057ba'

externals/zydis/tests/regression_encoder.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+from crash_tool import *
+from subprocess import Popen, PIPE
+
+
+def run_test(binary, payload=None):
+    proc = Popen(binary, stdin=PIPE, stdout=PIPE, stderr=PIPE)
+    proc.communicate(input=payload)
+    return proc.returncode == 0
+
+
+def run_test_collection(test_db_file, binary, converter):
+    with open(test_db_file, 'r') as f:
+        cases = json.loads(f.read())
+    tests_passed = True
+    for i, case in enumerate(cases):
+        test_result = run_test(binary, converter(case, True))
+        tests_passed &= test_result
+        description = 'Case #%d: ' % i
+        if 'description' in case:
+            description += case['description']
+        else:
+            description += case['mnemonic'][case['mnemonic'].rfind('_') + 1:].lower()
+        print('[%s] %s' % ('PASSED' if test_result else 'FAILED', description))
+    return tests_passed
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Runs regression tests for encoder')
+    parser.add_argument('zydis_fuzz_re_enc_path')
+    parser.add_argument('zydis_fuzz_enc_path')
+    parser.add_argument('zydis_test_tool_path')
+    args = parser.parse_args()
+
+    print('Running re-encoding tests:')
+    all_passed = run_test_collection('re_enc_test_cases.json', args.zydis_fuzz_re_enc_path, convert_re_enc_json_to_crash)
+    print()
+    print('Running encoding tests:')
+    all_passed &= run_test_collection('enc_test_cases.json', args.zydis_fuzz_enc_path, convert_enc_json_to_crash)
+    print()
+    print('Running encoding tests (absolute address mode):')
+    result = run_test(args.zydis_test_tool_path)
+    all_passed &= result
+    print('Success' if result else 'FAILED')
+    print()
+
+    if all_passed:
+        print('ALL TESTS PASSED')
+        sys.exit(0)
+    else:
+        print('SOME TESTS FAILED')
+        sys.exit(1)