1 files changed, 56 insertions, 0 deletions
diff --git a/deps/v8/src/extensions/cputracemark-extension.cc b/deps/v8/src/extensions/cputracemark-extension.cc
new file mode 100644
index 0000000000..af85130ee8
--- /dev/null
+++ b/deps/v8/src/extensions/cputracemark-extension.cc
@@ -0,0 +1,56 @@
+// 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 !V8_LIBC_MSVCRT
+  // 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