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// Copyright 2019 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/extensions/cputracemark-extension.h" namespace v8 { namespace internal { v8::Local<v8::FunctionTemplate> CpuTraceMarkExtension::GetNativeFunctionTemplate(v8::Isolate* isolate, v8::Local<v8::String> str) { return v8::FunctionTemplate::New(isolate, CpuTraceMarkExtension::Mark); } void CpuTraceMarkExtension::Mark( const v8::FunctionCallbackInfo<v8::Value>& args) { if (args.Length() < 1 || !args[0]->IsUint32()) { args.GetIsolate()->ThrowException( v8::String::NewFromUtf8( args.GetIsolate(), "First parameter to cputracemark() must be a unsigned int32.", NewStringType::kNormal) .ToLocalChecked()); } #if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 #if defined(__clang__) // for non msvc build uint32_t param = args[0]->Uint32Value(args.GetIsolate()->GetCurrentContext()).ToChecked(); int magic_dummy; #if defined(__i386__) && defined(__pic__) __asm__ __volatile__("push %%ebx; cpuid; pop %%ebx" : "=a"(magic_dummy) : "a"(0x4711 | ((unsigned)(param) << 16)) : "ecx", "edx"); #else __asm__ __volatile__("cpuid" : "=a"(magic_dummy) : "a"(0x4711 | ((unsigned)(param) << 16)) : "ecx", "edx", "ebx"); #endif // defined(__i386__) && defined(__pic__) #else // no msvc build support yet. #endif //! V8_LIBC_MSVCRT #endif // V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 } } // namespace internal } // namespace v8