1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
2 | // Use of this source code is governed by a BSD-style license that can be |
3 | // found in the LICENSE file. |
4 | |
5 | #include "flutter/testing/elf_loader.h" |
6 | |
7 | #include "flutter/fml/file.h" |
8 | #include "flutter/fml/paths.h" |
9 | #include "flutter/runtime/dart_vm.h" |
10 | #include "flutter/testing/testing.h" |
11 | |
12 | namespace flutter { |
13 | namespace testing { |
14 | |
15 | ELFAOTSymbols LoadELFSymbolFromFixturesIfNeccessary() { |
16 | if (!DartVM::IsRunningPrecompiledCode()) { |
17 | return {}; |
18 | } |
19 | |
20 | const auto elf_path = |
21 | fml::paths::JoinPaths({GetFixturesPath(), kAOTAppELFFileName}); |
22 | |
23 | if (!fml::IsFile(elf_path)) { |
24 | FML_LOG(ERROR) << "App AOT file does not exist for this fixture. Attempts " |
25 | "to launch the Dart VM with these AOT symbols will fail." ; |
26 | return {}; |
27 | } |
28 | |
29 | ELFAOTSymbols symbols; |
30 | |
31 | // Must not be freed. |
32 | const char* error = nullptr; |
33 | |
34 | #if OS_FUCHSIA |
35 | // TODO(gw280): https://github.com/flutter/flutter/issues/50285 |
36 | // Dart doesn't implement Dart_LoadELF on Fuchsia |
37 | auto loaded_elf = nullptr; |
38 | #else |
39 | auto loaded_elf = |
40 | Dart_LoadELF(elf_path.c_str(), // file path |
41 | 0, // file offset |
42 | &error, // error (out) |
43 | &symbols.vm_snapshot_data, // vm snapshot data (out) |
44 | &symbols.vm_snapshot_instrs, // vm snapshot instrs (out) |
45 | &symbols.vm_isolate_data, // vm isolate data (out) |
46 | &symbols.vm_isolate_instrs // vm isolate instr (out) |
47 | ); |
48 | #endif |
49 | |
50 | if (loaded_elf == nullptr) { |
51 | FML_LOG(ERROR) |
52 | << "Could not fetch AOT symbols from loaded ELF. Attempts " |
53 | "to launch the Dart VM with these AOT symbols will fail. Error: " |
54 | << error; |
55 | return {}; |
56 | } |
57 | |
58 | symbols.loaded_elf.reset(loaded_elf); |
59 | |
60 | return symbols; |
61 | } |
62 | |
63 | bool PrepareSettingsForAOTWithSymbols(Settings& settings, |
64 | const ELFAOTSymbols& symbols) { |
65 | if (!DartVM::IsRunningPrecompiledCode()) { |
66 | return false; |
67 | } |
68 | settings.vm_snapshot_data = [&]() { |
69 | return std::make_unique<fml::NonOwnedMapping>(symbols.vm_snapshot_data, 0u); |
70 | }; |
71 | settings.isolate_snapshot_data = [&]() { |
72 | return std::make_unique<fml::NonOwnedMapping>(symbols.vm_isolate_data, 0u); |
73 | }; |
74 | settings.vm_snapshot_instr = [&]() { |
75 | return std::make_unique<fml::NonOwnedMapping>(symbols.vm_snapshot_instrs, |
76 | 0u); |
77 | }; |
78 | settings.isolate_snapshot_instr = [&]() { |
79 | return std::make_unique<fml::NonOwnedMapping>(symbols.vm_isolate_instrs, |
80 | 0u); |
81 | }; |
82 | return true; |
83 | } |
84 | |
85 | } // namespace testing |
86 | } // namespace flutter |
87 | |