[wasm] Initial signal handler

src/api.cc

 // Copyright 2012 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 49 matching lines @@
 #include "src/property.h"
 #include "src/prototype.h"
 #include "src/runtime-profiler.h"
 #include "src/runtime/runtime.h"
 #include "src/simulator.h"
 #include "src/snapshot/code-serializer.h"
 #include "src/snapshot/natives.h"
 #include "src/snapshot/snapshot.h"
 #include "src/startup-data-util.h"
 #include "src/tracing/trace-event.h"
+#include "src/trap-handler/trap-handler.h"
 #include "src/unicode-inl.h"
 #include "src/v8.h"
 #include "src/v8threads.h"
 #include "src/value-serializer.h"
 #include "src/version.h"
 #include "src/vm-state-inl.h"
 #include "src/wasm/wasm-module.h"
 #include "src/wasm/wasm-objects.h"
 #include "src/wasm/wasm-result.h"
 
@@ skipping 6034 matching lines @@
 
 
 bool v8::V8::Initialize() {
   i::V8::Initialize();
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
   i::ReadNatives();
 #endif
   return true;
 }
 
+#if V8_OS_LINUX && V8_TARGET_ARCH_X64
+bool V8::TryHandleSignal(int signum, void* info, void* context) {
+  return v8::internal::trap_handler::TryHandleSignal(
+      signum, static_cast<siginfo_t*>(info), static_cast<ucontext_t*>(context));
+}
+#endif  // V8_OS_LINUX
+
+bool V8::RegisterDefaultSignalHandler() {
+  return v8::internal::trap_handler::RegisterDefaultSignalHandler();
+}
 
 void v8::V8::SetEntropySource(EntropySource entropy_source) {
   base::RandomNumberGenerator::SetEntropySource(entropy_source);
 }
 
 
 void v8::V8::SetReturnAddressLocationResolver(
     ReturnAddressLocationResolver return_address_resolver) {
   i::StackFrame::SetReturnAddressLocationResolver(return_address_resolver);
 }
@@ skipping 4035 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8