frames-inl.h revision 85b71799222b55eb5dd74ea26efe0c64ab655c8c 
1// Copyright 2011 the V8 project authors. All rights reserved.
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27
28#ifndef V8_FRAMES_INL_H_
29#define V8_FRAMES_INL_H_
30
31#include "frames.h"
32#include "isolate.h"
33#include "v8memory.h"
34
35#if V8_TARGET_ARCH_IA32
36#include "ia32/frames-ia32.h"
37#elif V8_TARGET_ARCH_X64
38#include "x64/frames-x64.h"
39#elif V8_TARGET_ARCH_ARM
40#include "arm/frames-arm.h"
41#elif V8_TARGET_ARCH_MIPS
42#include "mips/frames-mips.h"
43#else
44#error Unsupported target architecture.
45#endif
46
47namespace v8 {
48namespace internal {
49
50
51inline Address StackHandler::address() const {
52  return reinterpret_cast<Address>(const_cast<StackHandler*>(this));
53}
54
55
56inline StackHandler* StackHandler::next() const {
57  const int offset = StackHandlerConstants::kNextOffset;
58  return FromAddress(Memory::Address_at(address() + offset));
59}
60
61
62inline bool StackHandler::includes(Address address) const {
63  Address start = this->address();
64  Address end = start + StackHandlerConstants::kSize;
65  return start <= address && address <= end;
66}
67
68
69inline void StackHandler::Iterate(ObjectVisitor* v, Code* holder) const {
70  v->VisitPointer(context_address());
71  StackFrame::IteratePc(v, pc_address(), holder);
72}
73
74
75inline StackHandler* StackHandler::FromAddress(Address address) {
76  return reinterpret_cast<StackHandler*>(address);
77}
78
79
80inline StackHandler::State StackHandler::state() const {
81  const int offset = StackHandlerConstants::kStateOffset;
82  return static_cast<State>(Memory::int_at(address() + offset));
83}
84
85
86inline Object** StackHandler::context_address() const {
87  const int offset = StackHandlerConstants::kContextOffset;
88  return reinterpret_cast<Object**>(address() + offset);
89}
90
91
92inline Address* StackHandler::pc_address() const {
93  const int offset = StackHandlerConstants::kPCOffset;
94  return reinterpret_cast<Address*>(address() + offset);
95}
96
97
98inline StackFrame::StackFrame(StackFrameIterator* iterator)
99    : iterator_(iterator), isolate_(iterator_->isolate()) {
100}
101
102
103inline StackHandler* StackFrame::top_handler() const {
104  return iterator_->handler();
105}
106
107
108inline Code* StackFrame::GetContainingCode(Isolate* isolate, Address pc) {
109  return isolate->pc_to_code_cache()->GetCacheEntry(pc)->code;
110}
111
112
113inline Object* StandardFrame::GetExpression(int index) const {
114  return Memory::Object_at(GetExpressionAddress(index));
115}
116
117
118inline void StandardFrame::SetExpression(int index, Object* value) {
119  Memory::Object_at(GetExpressionAddress(index)) = value;
120}
121
122
123inline Object* StandardFrame::context() const {
124  const int offset = StandardFrameConstants::kContextOffset;
125  return Memory::Object_at(fp() + offset);
126}
127
128
129inline Address StandardFrame::caller_fp() const {
130  return Memory::Address_at(fp() + StandardFrameConstants::kCallerFPOffset);
131}
132
133
134inline Address StandardFrame::caller_pc() const {
135  return Memory::Address_at(ComputePCAddress(fp()));
136}
137
138
139inline Address StandardFrame::ComputePCAddress(Address fp) {
140  return fp + StandardFrameConstants::kCallerPCOffset;
141}
142
143
144inline bool StandardFrame::IsArgumentsAdaptorFrame(Address fp) {
145  Object* marker =
146      Memory::Object_at(fp + StandardFrameConstants::kContextOffset);
147  return marker == Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR);
148}
149
150
151inline bool StandardFrame::IsConstructFrame(Address fp) {
152  Object* marker =
153      Memory::Object_at(fp + StandardFrameConstants::kMarkerOffset);
154  return marker == Smi::FromInt(CONSTRUCT);
155}
156
157
158Address JavaScriptFrame::GetParameterSlot(int index) const {
159  int param_count = ComputeParametersCount();
160  ASSERT(-1 <= index && index < param_count);
161  int parameter_offset = (param_count - index - 1) * kPointerSize;
162  return caller_sp() + parameter_offset;
163}
164
165
166Object* JavaScriptFrame::GetParameter(int index) const {
167  return Memory::Object_at(GetParameterSlot(index));
168}
169
170
171inline Object* JavaScriptFrame::receiver() const {
172  return GetParameter(-1);
173}
174
175
176inline void JavaScriptFrame::set_receiver(Object* value) {
177  Memory::Object_at(GetParameterSlot(-1)) = value;
178}
179
180
181inline bool JavaScriptFrame::has_adapted_arguments() const {
182  return IsArgumentsAdaptorFrame(caller_fp());
183}
184
185
186inline Object* JavaScriptFrame::function() const {
187  Object* result = function_slot_object();
188  ASSERT(result->IsJSFunction());
189  return result;
190}
191
192
193template<typename Iterator>
194inline JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
195    Isolate* isolate)
196    : iterator_(isolate) {
197  if (!done()) Advance();
198}
199
200template<typename Iterator>
201inline JavaScriptFrame* JavaScriptFrameIteratorTemp<Iterator>::frame() const {
202  // TODO(1233797): The frame hierarchy needs to change. It's
203  // problematic that we can't use the safe-cast operator to cast to
204  // the JavaScript frame type, because we may encounter arguments
205  // adaptor frames.
206  StackFrame* frame = iterator_.frame();
207  ASSERT(frame->is_java_script() || frame->is_arguments_adaptor());
208  return static_cast<JavaScriptFrame*>(frame);
209}
210
211
212template<typename Iterator>
213JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
214    Isolate* isolate, StackFrame::Id id)
215    : iterator_(isolate) {
216  AdvanceToId(id);
217}
218
219
220template<typename Iterator>
221void JavaScriptFrameIteratorTemp<Iterator>::Advance() {
222  do {
223    iterator_.Advance();
224  } while (!iterator_.done() && !iterator_.frame()->is_java_script());
225}
226
227
228template<typename Iterator>
229void JavaScriptFrameIteratorTemp<Iterator>::AdvanceToArgumentsFrame() {
230  if (!frame()->has_adapted_arguments()) return;
231  iterator_.Advance();
232  ASSERT(iterator_.frame()->is_arguments_adaptor());
233}
234
235
236template<typename Iterator>
237void JavaScriptFrameIteratorTemp<Iterator>::AdvanceToId(StackFrame::Id id) {
238  while (!done()) {
239    Advance();
240    if (frame()->id() == id) return;
241  }
242}
243
244
245template<typename Iterator>
246void JavaScriptFrameIteratorTemp<Iterator>::Reset() {
247  iterator_.Reset();
248  if (!done()) Advance();
249}
250
251
252} }  // namespace v8::internal
253
254#endif  // V8_FRAMES_INL_H_
255