frames-inl.h revision 592a9fc1d8ea420377a2e7efd0600e20b058be2b 
1// Copyright 2011 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
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15//
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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  v->VisitPointer(code_address());
72}
73
74
75inline StackHandler* StackHandler::FromAddress(Address address) {
76  return reinterpret_cast<StackHandler*>(address);
77}
78
79
80inline bool StackHandler::is_entry() const {
81  return kind() == ENTRY;
82}
83
84
85inline bool StackHandler::is_try_catch() const {
86  return kind() == TRY_CATCH;
87}
88
89
90inline bool StackHandler::is_try_finally() const {
91  return kind() == TRY_FINALLY;
92}
93
94
95inline StackHandler::Kind StackHandler::kind() const {
96  const int offset = StackHandlerConstants::kStateOffset;
97  return KindField::decode(Memory::unsigned_at(address() + offset));
98}
99
100
101inline Object** StackHandler::context_address() const {
102  const int offset = StackHandlerConstants::kContextOffset;
103  return reinterpret_cast<Object**>(address() + offset);
104}
105
106
107inline Object** StackHandler::code_address() const {
108  const int offset = StackHandlerConstants::kCodeOffset;
109  return reinterpret_cast<Object**>(address() + offset);
110}
111
112
113inline StackFrame::StackFrame(StackFrameIterator* iterator)
114    : iterator_(iterator), isolate_(iterator_->isolate()) {
115}
116
117
118inline StackHandler* StackFrame::top_handler() const {
119  return iterator_->handler();
120}
121
122
123inline Code* StackFrame::LookupCode() const {
124  return GetContainingCode(isolate(), pc());
125}
126
127
128inline Code* StackFrame::GetContainingCode(Isolate* isolate, Address pc) {
129  return isolate->inner_pointer_to_code_cache()->GetCacheEntry(pc)->code;
130}
131
132
133inline EntryFrame::EntryFrame(StackFrameIterator* iterator)
134    : StackFrame(iterator) {
135}
136
137
138inline EntryConstructFrame::EntryConstructFrame(StackFrameIterator* iterator)
139    : EntryFrame(iterator) {
140}
141
142
143inline ExitFrame::ExitFrame(StackFrameIterator* iterator)
144    : StackFrame(iterator) {
145}
146
147
148inline StandardFrame::StandardFrame(StackFrameIterator* iterator)
149    : StackFrame(iterator) {
150}
151
152
153inline Object* StandardFrame::GetExpression(int index) const {
154  return Memory::Object_at(GetExpressionAddress(index));
155}
156
157
158inline void StandardFrame::SetExpression(int index, Object* value) {
159  Memory::Object_at(GetExpressionAddress(index)) = value;
160}
161
162
163inline Object* StandardFrame::context() const {
164  const int offset = StandardFrameConstants::kContextOffset;
165  return Memory::Object_at(fp() + offset);
166}
167
168
169inline Address StandardFrame::caller_fp() const {
170  return Memory::Address_at(fp() + StandardFrameConstants::kCallerFPOffset);
171}
172
173
174inline Address StandardFrame::caller_pc() const {
175  return Memory::Address_at(ComputePCAddress(fp()));
176}
177
178
179inline Address StandardFrame::ComputePCAddress(Address fp) {
180  return fp + StandardFrameConstants::kCallerPCOffset;
181}
182
183
184inline bool StandardFrame::IsArgumentsAdaptorFrame(Address fp) {
185  Object* marker =
186      Memory::Object_at(fp + StandardFrameConstants::kContextOffset);
187  return marker == Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR);
188}
189
190
191inline bool StandardFrame::IsConstructFrame(Address fp) {
192  Object* marker =
193      Memory::Object_at(fp + StandardFrameConstants::kMarkerOffset);
194  return marker == Smi::FromInt(CONSTRUCT);
195}
196
197
198inline JavaScriptFrame::JavaScriptFrame(StackFrameIterator* iterator)
199    : StandardFrame(iterator) {
200}
201
202
203Address JavaScriptFrame::GetParameterSlot(int index) const {
204  int param_count = ComputeParametersCount();
205  ASSERT(-1 <= index && index < param_count);
206  int parameter_offset = (param_count - index - 1) * kPointerSize;
207  return caller_sp() + parameter_offset;
208}
209
210
211Object* JavaScriptFrame::GetParameter(int index) const {
212  return Memory::Object_at(GetParameterSlot(index));
213}
214
215
216inline Object* JavaScriptFrame::receiver() const {
217  return GetParameter(-1);
218}
219
220
221inline void JavaScriptFrame::set_receiver(Object* value) {
222  Memory::Object_at(GetParameterSlot(-1)) = value;
223}
224
225
226inline bool JavaScriptFrame::has_adapted_arguments() const {
227  return IsArgumentsAdaptorFrame(caller_fp());
228}
229
230
231inline Object* JavaScriptFrame::function() const {
232  Object* result = function_slot_object();
233  ASSERT(result->IsJSFunction());
234  return result;
235}
236
237
238inline OptimizedFrame::OptimizedFrame(StackFrameIterator* iterator)
239    : JavaScriptFrame(iterator) {
240}
241
242
243inline ArgumentsAdaptorFrame::ArgumentsAdaptorFrame(
244    StackFrameIterator* iterator) : JavaScriptFrame(iterator) {
245}
246
247
248inline InternalFrame::InternalFrame(StackFrameIterator* iterator)
249    : StandardFrame(iterator) {
250}
251
252
253inline ConstructFrame::ConstructFrame(StackFrameIterator* iterator)
254    : InternalFrame(iterator) {
255}
256
257
258template<typename Iterator>
259inline JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
260    Isolate* isolate)
261    : iterator_(isolate) {
262  if (!done()) Advance();
263}
264
265
266template<typename Iterator>
267inline JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
268    Isolate* isolate, ThreadLocalTop* top)
269    : iterator_(isolate, top) {
270  if (!done()) Advance();
271}
272
273
274template<typename Iterator>
275inline JavaScriptFrame* JavaScriptFrameIteratorTemp<Iterator>::frame() const {
276  // TODO(1233797): The frame hierarchy needs to change. It's
277  // problematic that we can't use the safe-cast operator to cast to
278  // the JavaScript frame type, because we may encounter arguments
279  // adaptor frames.
280  StackFrame* frame = iterator_.frame();
281  ASSERT(frame->is_java_script() || frame->is_arguments_adaptor());
282  return static_cast<JavaScriptFrame*>(frame);
283}
284
285
286template<typename Iterator>
287JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
288    Isolate* isolate, StackFrame::Id id)
289    : iterator_(isolate) {
290  AdvanceToId(id);
291}
292
293
294template<typename Iterator>
295void JavaScriptFrameIteratorTemp<Iterator>::Advance() {
296  do {
297    iterator_.Advance();
298  } while (!iterator_.done() && !iterator_.frame()->is_java_script());
299}
300
301
302template<typename Iterator>
303void JavaScriptFrameIteratorTemp<Iterator>::AdvanceToArgumentsFrame() {
304  if (!frame()->has_adapted_arguments()) return;
305  iterator_.Advance();
306  ASSERT(iterator_.frame()->is_arguments_adaptor());
307}
308
309
310template<typename Iterator>
311void JavaScriptFrameIteratorTemp<Iterator>::AdvanceToId(StackFrame::Id id) {
312  while (!done()) {
313    Advance();
314    if (frame()->id() == id) return;
315  }
316}
317
318
319template<typename Iterator>
320void JavaScriptFrameIteratorTemp<Iterator>::Reset() {
321  iterator_.Reset();
322  if (!done()) Advance();
323}
324
325
326} }  // namespace v8::internal
327
328#endif  // V8_FRAMES_INL_H_
329