143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// Copyright 2014 the V8 project authors. All rights reserved. 243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// Redistribution and use in source and binary forms, with or without 343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// modification, are permitted provided that the following conditions are 443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// met: 543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// 643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// * Redistributions of source code must retain the above copyright 743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// notice, this list of conditions and the following disclaimer. 843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// * Redistributions in binary form must reproduce the above 943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// copyright notice, this list of conditions and the following 1043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// disclaimer in the documentation and/or other materials provided 1143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// with the distribution. 1243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// * Neither the name of Google Inc. nor the names of its 1343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// contributors may be used to endorse or promote products derived 1443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// from this software without specific prior written permission. 1543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// 1643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 28196eb601290dc49c3754da728dc58700dff2de1bmachenbach@chromium.org#include "test/cctest/trace-extension.h" 2943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 30196eb601290dc49c3754da728dc58700dff2de1bmachenbach@chromium.org#include "src/sampler.h" 31196eb601290dc49c3754da728dc58700dff2de1bmachenbach@chromium.org#include "test/cctest/cctest.h" 3243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 3343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgnamespace v8 { 3443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgnamespace internal { 3543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 3643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgconst char* TraceExtension::kSource = 3743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org "native function trace();" 3843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org "native function js_trace();" 3943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org "native function js_entry_sp();" 4043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org "native function js_entry_sp_level2();"; 4143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 4243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 4343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgv8::Handle<v8::FunctionTemplate> TraceExtension::GetNativeFunctionTemplate( 4443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org v8::Isolate* isolate, v8::Handle<v8::String> name) { 4543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org if (name->Equals(v8::String::NewFromUtf8(isolate, "trace"))) { 4643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return v8::FunctionTemplate::New(isolate, TraceExtension::Trace); 4743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org } else if (name->Equals(v8::String::NewFromUtf8(isolate, "js_trace"))) { 4843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return v8::FunctionTemplate::New(isolate, TraceExtension::JSTrace); 4943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org } else if (name->Equals(v8::String::NewFromUtf8(isolate, "js_entry_sp"))) { 5043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return v8::FunctionTemplate::New(isolate, TraceExtension::JSEntrySP); 5143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org } else if (name->Equals(v8::String::NewFromUtf8(isolate, 5243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org "js_entry_sp_level2"))) { 5343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return v8::FunctionTemplate::New(isolate, TraceExtension::JSEntrySPLevel2); 5443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org } else { 5543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK(false); 5643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return v8::Handle<v8::FunctionTemplate>(); 5743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org } 5843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 5943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 6043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 6143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgAddress TraceExtension::GetFP(const v8::FunctionCallbackInfo<v8::Value>& args) { 6243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org // Convert frame pointer from encoding as smis in the arguments to a pointer. 6343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK_EQ(2, args.Length()); // Ignore second argument on 32-bit platform. 6443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org#if defined(V8_HOST_ARCH_32_BIT) 6543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org Address fp = *reinterpret_cast<Address*>(*args[0]); 6643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org#elif defined(V8_HOST_ARCH_64_BIT) 6743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org int64_t low_bits = *reinterpret_cast<uint64_t*>(*args[0]) >> 32; 6843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org int64_t high_bits = *reinterpret_cast<uint64_t*>(*args[1]); 6943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org Address fp = reinterpret_cast<Address>(high_bits | low_bits); 7043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org#else 7143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org#error Host architecture is neither 32-bit nor 64-bit. 7243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org#endif 7343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org printf("Trace: %p\n", fp); 7443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return fp; 7543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 7643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 7743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 7843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgstatic struct { 7943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org TickSample* sample; 8043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} trace_env = { NULL }; 8143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 8243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 8343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::InitTraceEnv(TickSample* sample) { 8443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org trace_env.sample = sample; 8543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 8643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 8743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 8843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::DoTrace(Address fp) { 8943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org RegisterState regs; 9043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org regs.fp = fp; 9143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org // sp is only used to define stack high bound 9243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org regs.sp = 9343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org reinterpret_cast<Address>(trace_env.sample) - 10240; 9443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org trace_env.sample->Init(CcTest::i_isolate(), regs); 9543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 9643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 9743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 9843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::Trace(const v8::FunctionCallbackInfo<v8::Value>& args) { 9943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org DoTrace(GetFP(args)); 10043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 10143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 10243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 10343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// Hide c_entry_fp to emulate situation when sampling is done while 10443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org// pure JS code is being executed 10543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgstatic void DoTraceHideCEntryFPAddress(Address fp) { 10643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org v8::internal::Address saved_c_frame_fp = 10743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org *(CcTest::i_isolate()->c_entry_fp_address()); 10843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK(saved_c_frame_fp); 10943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org *(CcTest::i_isolate()->c_entry_fp_address()) = 0; 11043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org i::TraceExtension::DoTrace(fp); 11143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org *(CcTest::i_isolate()->c_entry_fp_address()) = saved_c_frame_fp; 11243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 11343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 11443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 11543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::JSTrace(const v8::FunctionCallbackInfo<v8::Value>& args) { 11643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org DoTraceHideCEntryFPAddress(GetFP(args)); 11743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 11843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 11943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 12043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgAddress TraceExtension::GetJsEntrySp() { 12143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK_NE(NULL, CcTest::i_isolate()->thread_local_top()); 12243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org return CcTest::i_isolate()->js_entry_sp(); 12343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 12443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 12543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 12643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::JSEntrySP( 12743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org const v8::FunctionCallbackInfo<v8::Value>& args) { 12843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK_NE(0, GetJsEntrySp()); 12943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 13043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 13143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 13243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.orgvoid TraceExtension::JSEntrySPLevel2( 13343c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org const v8::FunctionCallbackInfo<v8::Value>& args) { 13443c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org v8::HandleScope scope(args.GetIsolate()); 13543c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org const Address js_entry_sp = GetJsEntrySp(); 13643c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK_NE(0, js_entry_sp); 13743c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CompileRun("js_entry_sp();"); 13843c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org CHECK_EQ(js_entry_sp, GetJsEntrySp()); 13943c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} 14043c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 14143c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org 14243c51e51fafad9405752a3d7e953367531469575machenbach@chromium.org} } // namespace v8::internal 143