1// Copyright 2010 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 29#include "v8.h" 30 31#include "frames-inl.h" 32#include "mips/assembler-mips-inl.h" 33 34namespace v8 { 35namespace internal { 36 37 38StackFrame::Type StackFrame::ComputeType(State* state) { 39 ASSERT(state->fp != NULL); 40 if (StandardFrame::IsArgumentsAdaptorFrame(state->fp)) { 41 return ARGUMENTS_ADAPTOR; 42 } 43 // The marker and function offsets overlap. If the marker isn't a 44 // smi then the frame is a JavaScript frame -- and the marker is 45 // really the function. 46 const int offset = StandardFrameConstants::kMarkerOffset; 47 Object* marker = Memory::Object_at(state->fp + offset); 48 if (!marker->IsSmi()) return JAVA_SCRIPT; 49 return static_cast<StackFrame::Type>(Smi::cast(marker)->value()); 50} 51 52 53StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) { 54 if (fp == 0) return NONE; 55 // Compute frame type and stack pointer. 56 Address sp = fp + ExitFrameConstants::kSPDisplacement; 57 const int offset = ExitFrameConstants::kCodeOffset; 58 Object* code = Memory::Object_at(fp + offset); 59 bool is_debug_exit = code->IsSmi(); 60 if (is_debug_exit) { 61 sp -= kNumJSCallerSaved * kPointerSize; 62 } 63 // Fill in the state. 64 state->sp = sp; 65 state->fp = fp; 66 state->pc_address = reinterpret_cast<Address*>(sp - 1 * kPointerSize); 67 return EXIT; 68} 69 70 71void ExitFrame::Iterate(ObjectVisitor* v) const { 72 // Do nothing 73} 74 75 76int JavaScriptFrame::GetProvidedParametersCount() const { 77 return ComputeParametersCount(); 78} 79 80 81Address JavaScriptFrame::GetCallerStackPointer() const { 82 UNIMPLEMENTED_MIPS(); 83 return static_cast<Address>(NULL); // UNIMPLEMENTED RETURN 84} 85 86 87Address ArgumentsAdaptorFrame::GetCallerStackPointer() const { 88 UNIMPLEMENTED_MIPS(); 89 return static_cast<Address>(NULL); // UNIMPLEMENTED RETURN 90} 91 92 93Address InternalFrame::GetCallerStackPointer() const { 94 UNIMPLEMENTED_MIPS(); 95 return static_cast<Address>(NULL); // UNIMPLEMENTED RETURN 96} 97 98 99} } // namespace v8::internal 100 101