diff options
Diffstat (limited to 'third_party/libwebrtc/build/android/gyp/extract_unwind_tables_tests.py')
-rwxr-xr-x | third_party/libwebrtc/build/android/gyp/extract_unwind_tables_tests.py | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/android/gyp/extract_unwind_tables_tests.py b/third_party/libwebrtc/build/android/gyp/extract_unwind_tables_tests.py new file mode 100755 index 0000000000..59436ff2cd --- /dev/null +++ b/third_party/libwebrtc/build/android/gyp/extract_unwind_tables_tests.py @@ -0,0 +1,120 @@ +#!/usr/bin/env python3 +# Copyright 2018 The Chromium Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +"""Tests for extract_unwind_tables.py + +This test suite contains various tests for extracting CFI tables from breakpad +symbol files. +""" + +import optparse +import os +import struct +import sys +import tempfile +import unittest + +import extract_unwind_tables + +sys.path.append(os.path.join(os.path.dirname(__file__), "gyp")) +from util import build_utils + + +class TestExtractUnwindTables(unittest.TestCase): + def testExtractCfi(self): + with tempfile.NamedTemporaryFile() as output_file: + test_data_lines = """ +MODULE Linux arm CDE12FE1DF2B37A9C6560B4CBEE056420 lib_chrome.so +INFO CODE_ID E12FE1CD2BDFA937C6560B4CBEE05642 +FILE 0 ../../base/allocator/allocator_check.cc +FILE 1 ../../base/allocator/allocator_extension.cc +FILE 2 ../../base/allocator/allocator_shim.cc +FUNC 1adcb60 54 0 i2d_name_canon +1adcb60 1a 509 17054 +3b94c70 2 69 40 +PUBLIC e17001 0 assist_ranker::(anonymous namespace)::FakePredict::Initialize() +PUBLIC e17005 0 (anonymous namespace)::FileDeleter(base::File) +STACK CFI INIT e17000 4 .cfa: sp 0 + .ra: lr +STACK CFI INIT 0 4 .cfa: sp 0 + .ra: lr +STACK CFI 2 .cfa: sp 4 + +STACK CFI 4 .cfa: sp 12 + .ra: .cfa -8 + ^ r7: .cfa -12 + ^ +STACK CFI 6 .cfa: sp 16 + +STACK CFI INIT e1a96e 20 .cfa: sp 0 + .ra: lr +STACK CFI e1a970 .cfa: sp 4 + +STACK CFI e1a972 .cfa: sp 12 + .ra: .cfa -8 + ^ r7: .cfa -12 + ^ +STACK CFI e1a974 .cfa: sp 16 + +STACK CFI INIT e1a1e4 b0 .cfa: sp 0 + .ra: lr +STACK CFI e1a1e6 .cfa: sp 16 + .ra: .cfa -4 + ^ r4: .cfa -16 + ^ r5: .cfa -12 + +STACK CFI e1a1e8 .cfa: sp 80 + +STACK CFI INIT 0 4 .cfa: sp 0 + .ra: lr +STACK CFI INIT 3b92e24 3c .cfa: sp 0 + .ra: lr +STACK CFI 3b92e4c .cfa: sp 16 + .ra: .cfa -12 + ^ +STACK CFI INIT e17004 0 .cfa: sp 0 + .ra: lr +STACK CFI e17004 2 .cfa: sp 0 + .ra: lr +STACK CFI INIT 3b92e70 38 .cfa: sp 0 + .ra: lr +STACK CFI 3b92e74 .cfa: sp 8 + .ra: .cfa -4 + ^ r4: .cfa -8 + ^ +STACK CFI 3b92e90 .cfa: sp 0 + .ra: .ra r4: r4 +STACK CFI INIT 3b93114 6c .cfa: sp 0 + .ra: lr +STACK CFI 3b93118 .cfa: r7 16 + .ra: .cfa -4 + ^ +STACK CFI INIT 3b92114 6c .cfa: sp 0 + .ra: lr +STACK CFI 3b92118 .cfa: r7 16 + .ra: .cfa -20 + ^ +STACK CFI INIT 3b93214 fffff .cfa: sp 0 + .ra: lr +STACK CFI 3b93218 .cfa: r7 16 + .ra: .cfa -4 + ^ +""".splitlines() + extract_unwind_tables._ParseCfiData( + [l.encode('utf8') for l in test_data_lines], output_file.name) + + expected_cfi_data = { + 0xe1a1e4 : [0x2, 0x11, 0x4, 0x50], + 0xe1a296 : [], + 0xe1a96e : [0x2, 0x4, 0x4, 0xe, 0x6, 0x10], + 0xe1a990 : [], + 0x3b92e24: [0x28, 0x13], + 0x3b92e62: [], + } + expected_function_count = len(expected_cfi_data) + + actual_output = [] + with open(output_file.name, 'rb') as f: + while True: + read = f.read(2) + if not read: + break + actual_output.append(struct.unpack('H', read)[0]) + + # First value is size of unw_index table. + unw_index_size = actual_output[1] << 16 | actual_output[0] + # |unw_index_size| should match entry count. + self.assertEqual(expected_function_count, unw_index_size) + # |actual_output| is in blocks of 2 bytes. Skip first 4 bytes representing + # size. + unw_index_start = 2 + unw_index_addr_end = unw_index_start + expected_function_count * 2 + unw_index_end = unw_index_addr_end + expected_function_count + unw_index_addr_col = actual_output[unw_index_start : unw_index_addr_end] + unw_index_index_col = actual_output[unw_index_addr_end : unw_index_end] + + unw_data_start = unw_index_end + unw_data = actual_output[unw_data_start:] + + for func_iter in range(0, expected_function_count): + func_addr = (unw_index_addr_col[func_iter * 2 + 1] << 16 | + unw_index_addr_col[func_iter * 2]) + index = unw_index_index_col[func_iter] + # If index is CANT_UNWIND then invalid function. + if index == 0xFFFF: + self.assertEqual(expected_cfi_data[func_addr], []) + continue + + func_start = index + 1 + func_end = func_start + unw_data[index] * 2 + self.assertEqual(len(expected_cfi_data[func_addr]), + func_end - func_start) + func_cfi = unw_data[func_start : func_end] + self.assertEqual(expected_cfi_data[func_addr], func_cfi) + + +if __name__ == '__main__': + unittest.main() |