1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef V8_FRAMES_INL_H_
6 #define V8_FRAMES_INL_H_
12 #if V8_TARGET_ARCH_IA32
13 #include "ia32/frames-ia32.h"
14 #elif V8_TARGET_ARCH_X64
15 #include "x64/frames-x64.h"
16 #elif V8_TARGET_ARCH_ARM64
17 #include "arm64/frames-arm64.h"
18 #elif V8_TARGET_ARCH_ARM
19 #include "arm/frames-arm.h"
20 #elif V8_TARGET_ARCH_MIPS
21 #include "mips/frames-mips.h"
23 #error Unsupported target architecture.
30 inline Address StackHandler::address() const {
31 return reinterpret_cast<Address>(const_cast<StackHandler*>(this));
35 inline StackHandler* StackHandler::next() const {
36 const int offset = StackHandlerConstants::kNextOffset;
37 return FromAddress(Memory::Address_at(address() + offset));
41 inline bool StackHandler::includes(Address address) const {
42 Address start = this->address();
43 Address end = start + StackHandlerConstants::kSize;
44 return start <= address && address <= end;
48 inline void StackHandler::Iterate(ObjectVisitor* v, Code* holder) const {
49 v->VisitPointer(context_address());
50 v->VisitPointer(code_address());
54 inline StackHandler* StackHandler::FromAddress(Address address) {
55 return reinterpret_cast<StackHandler*>(address);
59 inline bool StackHandler::is_js_entry() const {
60 return kind() == JS_ENTRY;
64 inline bool StackHandler::is_catch() const {
65 return kind() == CATCH;
69 inline bool StackHandler::is_finally() const {
70 return kind() == FINALLY;
74 inline StackHandler::Kind StackHandler::kind() const {
75 const int offset = StackHandlerConstants::kStateOffset;
76 return KindField::decode(Memory::unsigned_at(address() + offset));
80 inline unsigned StackHandler::index() const {
81 const int offset = StackHandlerConstants::kStateOffset;
82 return IndexField::decode(Memory::unsigned_at(address() + offset));
86 inline Object** StackHandler::context_address() const {
87 const int offset = StackHandlerConstants::kContextOffset;
88 return reinterpret_cast<Object**>(address() + offset);
92 inline Object** StackHandler::code_address() const {
93 const int offset = StackHandlerConstants::kCodeOffset;
94 return reinterpret_cast<Object**>(address() + offset);
98 inline StackFrame::StackFrame(StackFrameIteratorBase* iterator)
99 : iterator_(iterator), isolate_(iterator_->isolate()) {
103 inline StackHandler* StackFrame::top_handler() const {
104 return iterator_->handler();
108 inline Code* StackFrame::LookupCode() const {
109 return GetContainingCode(isolate(), pc());
113 inline Code* StackFrame::GetContainingCode(Isolate* isolate, Address pc) {
114 return isolate->inner_pointer_to_code_cache()->GetCacheEntry(pc)->code;
118 inline Address* StackFrame::ResolveReturnAddressLocation(Address* pc_address) {
119 if (return_address_location_resolver_ == NULL) {
122 return reinterpret_cast<Address*>(
123 return_address_location_resolver_(
124 reinterpret_cast<uintptr_t>(pc_address)));
129 inline EntryFrame::EntryFrame(StackFrameIteratorBase* iterator)
130 : StackFrame(iterator) {
134 inline EntryConstructFrame::EntryConstructFrame(
135 StackFrameIteratorBase* iterator)
136 : EntryFrame(iterator) {
140 inline ExitFrame::ExitFrame(StackFrameIteratorBase* iterator)
141 : StackFrame(iterator) {
145 inline StandardFrame::StandardFrame(StackFrameIteratorBase* iterator)
146 : StackFrame(iterator) {
150 inline Object* StandardFrame::GetExpression(int index) const {
151 return Memory::Object_at(GetExpressionAddress(index));
155 inline void StandardFrame::SetExpression(int index, Object* value) {
156 Memory::Object_at(GetExpressionAddress(index)) = value;
160 inline Object* StandardFrame::context() const {
161 const int offset = StandardFrameConstants::kContextOffset;
162 return Memory::Object_at(fp() + offset);
166 inline Address StandardFrame::caller_fp() const {
167 return Memory::Address_at(fp() + StandardFrameConstants::kCallerFPOffset);
171 inline Address StandardFrame::caller_pc() const {
172 return Memory::Address_at(ComputePCAddress(fp()));
176 inline Address StandardFrame::ComputePCAddress(Address fp) {
177 return fp + StandardFrameConstants::kCallerPCOffset;
181 inline Address StandardFrame::ComputeConstantPoolAddress(Address fp) {
182 return fp + StandardFrameConstants::kConstantPoolOffset;
186 inline bool StandardFrame::IsArgumentsAdaptorFrame(Address fp) {
188 Memory::Object_at(fp + StandardFrameConstants::kContextOffset);
189 return marker == Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR);
193 inline bool StandardFrame::IsConstructFrame(Address fp) {
195 Memory::Object_at(fp + StandardFrameConstants::kMarkerOffset);
196 return marker == Smi::FromInt(StackFrame::CONSTRUCT);
200 inline JavaScriptFrame::JavaScriptFrame(StackFrameIteratorBase* iterator)
201 : StandardFrame(iterator) {
205 Address JavaScriptFrame::GetParameterSlot(int index) const {
206 int param_count = ComputeParametersCount();
207 ASSERT(-1 <= index && index < param_count);
208 int parameter_offset = (param_count - index - 1) * kPointerSize;
209 return caller_sp() + parameter_offset;
213 Object* JavaScriptFrame::GetParameter(int index) const {
214 return Memory::Object_at(GetParameterSlot(index));
218 inline Address JavaScriptFrame::GetOperandSlot(int index) const {
219 Address base = fp() + JavaScriptFrameConstants::kLocal0Offset;
220 ASSERT(IsAddressAligned(base, kPointerSize));
221 ASSERT_EQ(type(), JAVA_SCRIPT);
222 ASSERT_LT(index, ComputeOperandsCount());
224 // Operand stack grows down.
225 return base - index * kPointerSize;
229 inline Object* JavaScriptFrame::GetOperand(int index) const {
230 return Memory::Object_at(GetOperandSlot(index));
234 inline int JavaScriptFrame::ComputeOperandsCount() const {
235 Address base = fp() + JavaScriptFrameConstants::kLocal0Offset;
236 // Base points to low address of first operand and stack grows down, so add
237 // kPointerSize to get the actual stack size.
238 intptr_t stack_size_in_bytes = (base + kPointerSize) - sp();
239 ASSERT(IsAligned(stack_size_in_bytes, kPointerSize));
240 ASSERT(type() == JAVA_SCRIPT);
241 ASSERT(stack_size_in_bytes >= 0);
242 return static_cast<int>(stack_size_in_bytes >> kPointerSizeLog2);
246 inline Object* JavaScriptFrame::receiver() const {
247 return GetParameter(-1);
251 inline void JavaScriptFrame::set_receiver(Object* value) {
252 Memory::Object_at(GetParameterSlot(-1)) = value;
256 inline bool JavaScriptFrame::has_adapted_arguments() const {
257 return IsArgumentsAdaptorFrame(caller_fp());
261 inline JSFunction* JavaScriptFrame::function() const {
262 return JSFunction::cast(function_slot_object());
266 inline StubFrame::StubFrame(StackFrameIteratorBase* iterator)
267 : StandardFrame(iterator) {
271 inline OptimizedFrame::OptimizedFrame(StackFrameIteratorBase* iterator)
272 : JavaScriptFrame(iterator) {
276 inline ArgumentsAdaptorFrame::ArgumentsAdaptorFrame(
277 StackFrameIteratorBase* iterator) : JavaScriptFrame(iterator) {
281 inline InternalFrame::InternalFrame(StackFrameIteratorBase* iterator)
282 : StandardFrame(iterator) {
286 inline StubFailureTrampolineFrame::StubFailureTrampolineFrame(
287 StackFrameIteratorBase* iterator) : StandardFrame(iterator) {
291 inline ConstructFrame::ConstructFrame(StackFrameIteratorBase* iterator)
292 : InternalFrame(iterator) {
296 inline JavaScriptFrameIterator::JavaScriptFrameIterator(
298 : iterator_(isolate) {
299 if (!done()) Advance();
303 inline JavaScriptFrameIterator::JavaScriptFrameIterator(
304 Isolate* isolate, ThreadLocalTop* top)
305 : iterator_(isolate, top) {
306 if (!done()) Advance();
310 inline JavaScriptFrame* JavaScriptFrameIterator::frame() const {
311 // TODO(1233797): The frame hierarchy needs to change. It's
312 // problematic that we can't use the safe-cast operator to cast to
313 // the JavaScript frame type, because we may encounter arguments
315 StackFrame* frame = iterator_.frame();
316 ASSERT(frame->is_java_script() || frame->is_arguments_adaptor());
317 return static_cast<JavaScriptFrame*>(frame);
321 inline StackFrame* SafeStackFrameIterator::frame() const {
323 ASSERT(frame_->is_java_script() || frame_->is_exit());
328 } } // namespace v8::internal
330 #endif // V8_FRAMES_INL_H_