更新构建脚本以修复补丁文件路径和源文件路径

新增 v8dasm.cpp 文件以支持字节码加载和反汇编功能

Author: MrSibe

Disassembler/v8.patch

@@ -0,0 +1,137 @@
+diff --git a/src/diagnostics/objects-printer.cc b/src/diagnostics/objects-printer.cc
+index 5b546e29926..45d7b50b7f5 100644
+--- a/src/diagnostics/objects-printer.cc
++++ b/src/diagnostics/objects-printer.cc
+@@ -1687,7 +1687,6 @@ void SharedFunctionInfo::SharedFunctionInfoPrint(std::ostream& os) {
+   os << "\n - data: " << Brief(function_data(kAcquireLoad));
+   os << "\n - code (from data): ";
+   os << Brief(GetCode());
+-  PrintSourceCode(os);
+   // Script files are often large, thus only print their {Brief} representation.
+   os << "\n - script: " << Brief(script());
+   os << "\n - function token position: " << function_token_position();
+@@ -1710,6 +1709,10 @@ void SharedFunctionInfo::SharedFunctionInfoPrint(std::ostream& os) {
+     os << "<none>";
+   }
+   os << "\n";
++  os << "\nStart BytecodeArray\n";
++  this->GetActiveBytecodeArray().Disassemble(os);
++  os << "\nEnd BytecodeArray\n";
++  os << std::flush;
+ }
+ 
+ void JSGlobalProxy::JSGlobalProxyPrint(std::ostream& os) {
+diff --git a/src/objects/objects.cc b/src/objects/objects.cc
+index 559160358c1..420b3da2b66 100644
+--- a/src/objects/objects.cc
++++ b/src/objects/objects.cc
+@@ -1850,6 +1850,16 @@ void HeapObject::HeapObjectShortPrint(std::ostream& os) {
+     os << accumulator.ToCString().get();
+     return;
+   }
++
++  // Print array literal members instead of only "<AsmWasmData>"
++  if (map(cage_base).instance_type() == ASM_WASM_DATA_TYPE) {
++    os << "<ArrayBoilerplateDescription> ";
++    ArrayBoilerplateDescription::cast(*this)
++        .constant_elements()
++        .HeapObjectShortPrint(os);
++    return;
++  }
++
+   switch (map(cage_base).instance_type()) {
+     case MAP_TYPE: {
+       os << "<Map";
+@@ -1936,14 +1946,24 @@ void HeapObject::HeapObjectShortPrint(std::ostream& os) {
+       break;
+     case FIXED_ARRAY_TYPE:
+       os << "<FixedArray[" << FixedArray::cast(*this).length() << "]>";
++      os << "\nStart FixedArray\n";
++      FixedArray::cast(*this).FixedArrayPrint(os);
++      os << "\nEnd FixedArray\n";
+       break;
+     case OBJECT_BOILERPLATE_DESCRIPTION_TYPE:
+       os << "<ObjectBoilerplateDescription[" << FixedArray::cast(*this).length()
+          << "]>";
++      os << "\nStart ObjectBoilerplateDescription\n";
++      ObjectBoilerplateDescription::cast(*this)
++          .ObjectBoilerplateDescriptionPrint(os);
++      os << "\nEnd ObjectBoilerplateDescription\n";
+       break;
+     case FIXED_DOUBLE_ARRAY_TYPE:
+       os << "<FixedDoubleArray[" << FixedDoubleArray::cast(*this).length()
+          << "]>";
++      os << "\nStart FixedDoubleArray\n";
++      FixedDoubleArray::cast(*this).FixedDoubleArrayPrint(os);
++      os << "\nEnd FixedDoubleArray\n";
+       break;
+     case BYTE_ARRAY_TYPE:
+       os << "<ByteArray[" << ByteArray::cast(*this).length() << "]>";
+@@ -2022,6 +2042,9 @@ void HeapObject::HeapObjectShortPrint(std::ostream& os) {
+       } else {
+         os << "<SharedFunctionInfo>";
+       }
++      os << "\nStart SharedFunctionInfo\n";
++      shared.SharedFunctionInfoPrint(os);
++      os << "\nEnd SharedFunctionInfo\n";
+       break;
+     }
+     case JS_MESSAGE_OBJECT_TYPE:
+diff --git a/src/objects/string.cc b/src/objects/string.cc
+index cd134f84055..285d55fda5e 100644
+--- a/src/objects/string.cc
++++ b/src/objects/string.cc
+@@ -477,13 +477,6 @@ void String::StringShortPrint(StringStream* accumulator) {
+   accumulator->Add("<String[%u]: ", len);
+   accumulator->Add(PrefixForDebugPrint());
+ 
+-  if (len > kMaxShortPrintLength) {
+-    accumulator->Add("...<truncated>>");
+-    accumulator->Add(SuffixForDebugPrint());
+-    accumulator->Put('>');
+-    return;
+-  }
+-
+   PrintUC16(accumulator, 0, len);
+   accumulator->Add(SuffixForDebugPrint());
+   accumulator->Put('>');
+diff --git a/src/snapshot/code-serializer.cc b/src/snapshot/code-serializer.cc
+index 3f380e6a2ff..1f55cb9009a 100644
+--- a/src/snapshot/code-serializer.cc
++++ b/src/snapshot/code-serializer.cc
+@@ -466,6 +466,12 @@ MaybeHandle<SharedFunctionInfo> CodeSerializer::Deserialize(
+     if (FLAG_profile_deserialization) PrintF("[Deserializing failed]\n");
+     return MaybeHandle<SharedFunctionInfo>();
+   }
++
++  std::cout << "\nStart SharedFunctionInfo\n";
++  result->SharedFunctionInfoPrint(std::cout);
++  std::cout << "\nEnd SharedFunctionInfo\n";
++  std::cout << std::flush;
++
+   BaselineBatchCompileIfSparkplugCompiled(isolate,
+                                           Script::cast(result->script()));
+   if (FLAG_profile_deserialization) {
+@@ -651,9 +657,7 @@ SerializedCodeData::SerializedCodeData(const std::vector<byte>* payload,
+ 
+ SerializedCodeSanityCheckResult SerializedCodeData::SanityCheck(
+     uint32_t expected_source_hash) const {
+-  SerializedCodeSanityCheckResult result = SanityCheckWithoutSource();
+-  if (result != SerializedCodeSanityCheckResult::kSuccess) return result;
+-  return SanityCheckJustSource(expected_source_hash);
++  return SerializedCodeSanityCheckResult::kSuccess;
+ }
+ 
+ SerializedCodeSanityCheckResult SerializedCodeData::SanityCheckJustSource(
+diff --git a/src/snapshot/deserializer.cc b/src/snapshot/deserializer.cc
+index 09fffbbed37..8ce3b2680ef 100644
+--- a/src/snapshot/deserializer.cc
++++ b/src/snapshot/deserializer.cc
+@@ -210,7 +210,6 @@ Deserializer<IsolateT>::Deserializer(IsolateT* isolate,
+ #ifdef DEBUG
+   num_api_references_ = GetNumApiReferences(isolate);
+ #endif  // DEBUG
+-  CHECK_EQ(magic_number_, SerializedData::kMagicNumber);
+ }
+ 
+ template <typename IsolateT>

Disassembler/v8dasm.cpp

@@ -0,0 +1,72 @@
+#include <fstream>
+#include <iostream>
+#include <string>
+
+#include "include/v8.h"
+#include "include/libplatform/libplatform.h"
+
+using namespace v8;
+
+static Isolate* isolate = nullptr;
+
+// Compatibility with v8 versions that have different ScriptOrigin constructors
+template <typename... Args>
+ScriptOrigin CreateScriptOrigin(Args&&... args) {
+  if constexpr (std::is_constructible_v<ScriptOrigin, Isolate*, Local<String>>) {
+      return ScriptOrigin(isolate, std::forward<Args>(args)...);
+  } else {
+      return ScriptOrigin(std::forward<Args>(args)...);
+  }
+}
+
+static void loadBytecode(uint8_t* bytecodeBuffer, int length) {
+  // Load code into code cache.
+  ScriptCompiler::CachedData* cached_data =
+      new ScriptCompiler::CachedData(bytecodeBuffer, length);
+
+  // Create dummy source.
+  ScriptOrigin origin = CreateScriptOrigin(String::NewFromUtf8Literal(isolate, "code.jsc"));
+
+  ScriptCompiler::Source source(String::NewFromUtf8Literal(isolate, "\"ಠ_ಠ\""),
+                                origin, cached_data);
+
+  // Compile code from code cache to print disassembly.
+  MaybeLocal<UnboundScript> script = ScriptCompiler::CompileUnboundScript(
+      isolate, &source, ScriptCompiler::kConsumeCodeCache);
+}
+
+static void readAllBytes(const std::string& file, std::vector<char>& buffer) {
+  std::ifstream infile(file, std::ios::binary);
+
+  infile.seekg(0, infile.end);
+  size_t length = infile.tellg();
+  infile.seekg(0, infile.beg);
+
+  if (length > 0) {
+    buffer.resize(length);
+    infile.read(&buffer[0], length);
+  }
+}
+
+int main(int argc, char* argv[]) {
+  V8::SetFlagsFromString("--no-lazy --no-flush-bytecode");
+
+  V8::InitializeICU();
+  std::unique_ptr<Platform> platform = platform::NewDefaultPlatform();
+  V8::InitializePlatform(platform.get());
+  V8::Initialize();
+
+  Isolate::CreateParams create_params;
+  create_params.array_buffer_allocator =
+      ArrayBuffer::Allocator::NewDefaultAllocator();
+
+  isolate = Isolate::New(create_params);
+  Isolate::Scope isolate_scope(isolate);
+  HandleScope handle_scope(isolate);
+  Local<v8::Context> context = Context::New(isolate);
+  Context::Scope context_scope(context);
+
+  std::vector<char> data;
+  readAllBytes(argv[1], data);
+  loadBytecode((uint8_t*)data.data(), data.size());
+}

scripts/v8dasm-builders/build-linux.sh

@@ -81,7 +81,7 @@ gclient sync
 
 # 应用补丁
 echo "=====[ Applying v8.patch ]====="
-PATCH_FILE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8.patch"
+PATCH_FILE="$WORKSPACE_DIR/Disassembler/v8.patch"
 
 # 检查补丁是否已应用
 if git apply --check $PATCH_FILE 2>/dev/null; then
@@ -125,7 +125,7 @@ ninja -C out.gn/x64.release v8_monolith
 
 # 编译 v8dasm
 echo "=====[ Compiling v8dasm ]====="
-DASM_SOURCE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8dasm.cpp"
+DASM_SOURCE="$WORKSPACE_DIR/Disassembler/v8dasm.cpp"
 OUTPUT_NAME="v8dasm-$V8_VERSION"
 
 clang++ $DASM_SOURCE \

scripts/v8dasm-builders/build-macos-arm.sh

@@ -64,7 +64,7 @@ gclient sync
 
 # 应用补丁
 echo "=====[ Applying v8.patch ]====="
-PATCH_FILE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8.patch"
+PATCH_FILE="$WORKSPACE_DIR/Disassembler/v8.patch"
 
 if git apply --check $PATCH_FILE 2>/dev/null; then
     git apply --verbose $PATCH_FILE
@@ -100,7 +100,7 @@ ninja -C out.gn/arm64.release v8_monolith
 
 # 编译 v8dasm
 echo "=====[ Compiling v8dasm ]====="
-DASM_SOURCE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8dasm.cpp"
+DASM_SOURCE="$WORKSPACE_DIR/Disassembler/v8dasm.cpp"
 OUTPUT_NAME="v8dasm-$V8_VERSION"
 
 clang++ $DASM_SOURCE \

scripts/v8dasm-builders/build-macos-intel.sh

@@ -64,7 +64,7 @@ gclient sync
 
 # 应用补丁
 echo "=====[ Applying v8.patch ]====="
-PATCH_FILE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8.patch"
+PATCH_FILE="$WORKSPACE_DIR/Disassembler/v8.patch"
 
 if git apply --check $PATCH_FILE 2>/dev/null; then
     git apply --verbose $PATCH_FILE
@@ -100,7 +100,7 @@ ninja -C out.gn/x64.release v8_monolith
 
 # 编译 v8dasm
 echo "=====[ Compiling v8dasm ]====="
-DASM_SOURCE="$WORKSPACE_DIR/view8-jsc-decode/Disassembler/v8dasm.cpp"
+DASM_SOURCE="$WORKSPACE_DIR/Disassembler/v8dasm.cpp"
 OUTPUT_NAME="v8dasm-$V8_VERSION"
 
 clang++ $DASM_SOURCE \

scripts/v8dasm-builders/build-windows.cmd

@@ -65,7 +65,7 @@ call gclient sync
 
 REM 应用补丁
 echo =====[ Applying v8.patch ]=====
-set PATCH_FILE=%WORKSPACE_DIR%\view8-jsc-decode\Disassembler\v8.patch
+set PATCH_FILE=%WORKSPACE_DIR%\Disassembler\v8.patch
 
 git apply --check %PATCH_FILE% >nul 2>&1
 if %errorlevel% equ 0 (
@@ -94,7 +94,7 @@ call ninja -C out.gn\x64.release v8_monolith
 
 REM 编译 v8dasm
 echo =====[ Compiling v8dasm ]=====
-set DASM_SOURCE=%WORKSPACE_DIR%\view8-jsc-decode\Disassembler\v8dasm.cpp
+set DASM_SOURCE=%WORKSPACE_DIR%\Disassembler\v8dasm.cpp
 set OUTPUT_NAME=v8dasm-%V8_VERSION%.exe
 
 clang++ %DASM_SOURCE% ^