1 // Copyright 2006-2008 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 #ifndef V8_FRAMES_INL_H_
29 #define V8_FRAMES_INL_H_
30
31 #include "frames.h"
32
33 #if V8_TARGET_ARCH_IA32
34 #include "ia32/frames-ia32.h"
35 #elif V8_TARGET_ARCH_X64
36 #include "x64/frames-x64.h"
37 #elif V8_TARGET_ARCH_ARM
38 #include "arm/frames-arm.h"
39 #else
40 #error Unsupported target architecture.
41 #endif
42
43 namespace v8 {
44 namespace internal {
45
46
address()47 inline Address StackHandler::address() const {
48 return reinterpret_cast<Address>(const_cast<StackHandler*>(this));
49 }
50
51
next()52 inline StackHandler* StackHandler::next() const {
53 const int offset = StackHandlerConstants::kNextOffset;
54 return FromAddress(Memory::Address_at(address() + offset));
55 }
56
57
includes(Address address)58 inline bool StackHandler::includes(Address address) const {
59 Address start = this->address();
60 Address end = start + StackHandlerConstants::kSize;
61 return start <= address && address <= end;
62 }
63
64
Iterate(ObjectVisitor * v)65 inline void StackHandler::Iterate(ObjectVisitor* v) const {
66 // Stack handlers do not contain any pointers that need to be
67 // traversed.
68 }
69
70
FromAddress(Address address)71 inline StackHandler* StackHandler::FromAddress(Address address) {
72 return reinterpret_cast<StackHandler*>(address);
73 }
74
75
state()76 inline StackHandler::State StackHandler::state() const {
77 const int offset = StackHandlerConstants::kStateOffset;
78 return static_cast<State>(Memory::int_at(address() + offset));
79 }
80
81
pc()82 inline Address StackHandler::pc() const {
83 const int offset = StackHandlerConstants::kPCOffset;
84 return Memory::Address_at(address() + offset);
85 }
86
87
set_pc(Address value)88 inline void StackHandler::set_pc(Address value) {
89 const int offset = StackHandlerConstants::kPCOffset;
90 Memory::Address_at(address() + offset) = value;
91 }
92
93
top_handler()94 inline StackHandler* StackFrame::top_handler() const {
95 return iterator_->handler();
96 }
97
98
GetExpression(int index)99 inline Object* StandardFrame::GetExpression(int index) const {
100 return Memory::Object_at(GetExpressionAddress(index));
101 }
102
103
SetExpression(int index,Object * value)104 inline void StandardFrame::SetExpression(int index, Object* value) {
105 Memory::Object_at(GetExpressionAddress(index)) = value;
106 }
107
108
context()109 inline Object* StandardFrame::context() const {
110 const int offset = StandardFrameConstants::kContextOffset;
111 return Memory::Object_at(fp() + offset);
112 }
113
114
caller_fp()115 inline Address StandardFrame::caller_fp() const {
116 return Memory::Address_at(fp() + StandardFrameConstants::kCallerFPOffset);
117 }
118
119
caller_pc()120 inline Address StandardFrame::caller_pc() const {
121 return Memory::Address_at(ComputePCAddress(fp()));
122 }
123
124
ComputePCAddress(Address fp)125 inline Address StandardFrame::ComputePCAddress(Address fp) {
126 return fp + StandardFrameConstants::kCallerPCOffset;
127 }
128
129
IsArgumentsAdaptorFrame(Address fp)130 inline bool StandardFrame::IsArgumentsAdaptorFrame(Address fp) {
131 Object* marker =
132 Memory::Object_at(fp + StandardFrameConstants::kContextOffset);
133 return marker == Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR);
134 }
135
136
IsConstructFrame(Address fp)137 inline bool StandardFrame::IsConstructFrame(Address fp) {
138 Object* marker =
139 Memory::Object_at(fp + StandardFrameConstants::kMarkerOffset);
140 return marker == Smi::FromInt(CONSTRUCT);
141 }
142
143
receiver()144 inline Object* JavaScriptFrame::receiver() const {
145 const int offset = JavaScriptFrameConstants::kReceiverOffset;
146 return Memory::Object_at(caller_sp() + offset);
147 }
148
149
set_receiver(Object * value)150 inline void JavaScriptFrame::set_receiver(Object* value) {
151 const int offset = JavaScriptFrameConstants::kReceiverOffset;
152 Memory::Object_at(caller_sp() + offset) = value;
153 }
154
155
has_adapted_arguments()156 inline bool JavaScriptFrame::has_adapted_arguments() const {
157 return IsArgumentsAdaptorFrame(caller_fp());
158 }
159
160
function()161 inline Object* JavaScriptFrame::function() const {
162 Object* result = function_slot_object();
163 ASSERT(result->IsJSFunction());
164 return result;
165 }
166
167
168 template<typename Iterator>
frame()169 inline JavaScriptFrame* JavaScriptFrameIteratorTemp<Iterator>::frame() const {
170 // TODO(1233797): The frame hierarchy needs to change. It's
171 // problematic that we can't use the safe-cast operator to cast to
172 // the JavaScript frame type, because we may encounter arguments
173 // adaptor frames.
174 StackFrame* frame = iterator_.frame();
175 ASSERT(frame->is_java_script() || frame->is_arguments_adaptor());
176 return static_cast<JavaScriptFrame*>(frame);
177 }
178
179
180 template<typename Iterator>
JavaScriptFrameIteratorTemp(StackFrame::Id id)181 JavaScriptFrameIteratorTemp<Iterator>::JavaScriptFrameIteratorTemp(
182 StackFrame::Id id) {
183 while (!done()) {
184 Advance();
185 if (frame()->id() == id) return;
186 }
187 }
188
189
190 template<typename Iterator>
Advance()191 void JavaScriptFrameIteratorTemp<Iterator>::Advance() {
192 do {
193 iterator_.Advance();
194 } while (!iterator_.done() && !iterator_.frame()->is_java_script());
195 }
196
197
198 template<typename Iterator>
AdvanceToArgumentsFrame()199 void JavaScriptFrameIteratorTemp<Iterator>::AdvanceToArgumentsFrame() {
200 if (!frame()->has_adapted_arguments()) return;
201 iterator_.Advance();
202 ASSERT(iterator_.frame()->is_arguments_adaptor());
203 }
204
205
206 template<typename Iterator>
Reset()207 void JavaScriptFrameIteratorTemp<Iterator>::Reset() {
208 iterator_.Reset();
209 if (!done()) Advance();
210 }
211
212
213 } } // namespace v8::internal
214
215 #endif // V8_FRAMES_INL_H_
216