Upload Kmake

deps/v8/tools/snapshot/asm_to_inline_asm.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+# Copyright 2018 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+'''
+Converts a given file in clang assembly syntax to a corresponding
+representation in inline assembly. Specifically, this is used to convert
+embedded.S to embedded.cc for Windows clang builds.
+'''
+
+import argparse
+import sys
+
+def asm_to_inl_asm(in_filename, out_filename):
+  with open(in_filename, 'r') as infile, open(out_filename, 'wb') as outfile:
+    outfile.write(b'__asm__(\n')
+    for line in infile:
+      # Escape " in .S file before outputing it to inline asm file.
+      line = line.replace('"', '\\"')
+      outfile.write(b'  "%s\\n"\n' % line.rstrip().encode('utf8'))
+    outfile.write(b');\n')
+  return 0
+
+if __name__ == '__main__':
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument('input', help='Name of the input assembly file')
+  parser.add_argument('output', help='Name of the target CC file')
+  args = parser.parse_args()
+  sys.exit(asm_to_inl_asm(args.input, args.output))

deps/v8/tools/snapshot/compare_mksnapshot_output.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+# Copyright 2023 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""
+Checks for non-determinism in mksnapshot output by comparing output from
+multiple runs. Expected to be called with arguments like:
+
+<script> <report path> <gn gen dir> <gn out dir> <number of runs>
+
+The script will look for <number of runs> versions of snapshot and embedded
+builtins within the gn gen and out directories.
+"""
+
+import hashlib
+import sys
+
+from pathlib import Path
+
+ERROR_TEXT = """
+Non-deterministic %s.
+To reproduce, run mksnapshot multiple times and compare or:
+1) Set gn variable v8_verify_deterministic_mksnapshot = true
+2) Build target verify_deterministic_mksnapshot.
+"""
+
+assert len(sys.argv) == 5
+report = Path(sys.argv[1])
+gendir = Path(sys.argv[2])
+outdir = Path(sys.argv[3])
+n_runs = int(sys.argv[4])
+
+
+def md5(path):
+  with open(path, 'rb') as f:
+    return hashlib.md5(f.read()).digest()
+
+
+def snapshot_file(i):
+  return outdir / f'snapshot_blob_run_{i}.bin'
+
+
+def builtins_file(i):
+  return gendir / f'embedded_run_{i}.S'
+
+
+def verify(file_fun, type):
+  different_hashes = set(md5(file_fun(i)) for i in range(n_runs))
+  if len(different_hashes) != 1:
+    print(ERROR_TEXT % type)
+    sys.exit(1)
+
+
+verify(snapshot_file, 'shapshot')
+verify(builtins_file, 'embedded builtins')
+
+# Dummy output file needed when running an action target.
+with open(report, 'w') as f:
+  f.write('Deterministic mksnapshot.')