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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_EXECUTION_FRAMES_INL_H_
#define V8_EXECUTION_FRAMES_INL_H_
#include "src/common/v8memory.h"
#include "src/execution/frame-constants.h"
#include "src/execution/frames.h"
#include "src/execution/isolate.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
class InnerPointerToCodeCache {
public:
struct InnerPointerToCodeCacheEntry {
Address inner_pointer;
Code code;
SafepointEntry safepoint_entry;
};
explicit InnerPointerToCodeCache(Isolate* isolate) : isolate_(isolate) {
Flush();
}
void Flush() { memset(static_cast<void*>(&cache_[0]), 0, sizeof(cache_)); }
InnerPointerToCodeCacheEntry* GetCacheEntry(Address inner_pointer);
private:
InnerPointerToCodeCacheEntry* cache(int index) { return &cache_[index]; }
Isolate* isolate_;
static const int kInnerPointerToCodeCacheSize = 1024;
InnerPointerToCodeCacheEntry cache_[kInnerPointerToCodeCacheSize];
DISALLOW_COPY_AND_ASSIGN(InnerPointerToCodeCache);
};
inline Address StackHandler::address() const {
return reinterpret_cast<Address>(const_cast<StackHandler*>(this));
}
inline StackHandler* StackHandler::next() const {
const int offset = StackHandlerConstants::kNextOffset;
return FromAddress(Memory<Address>(address() + offset));
}
inline Address StackHandler::next_address() const {
return Memory<Address>(address() + StackHandlerConstants::kNextOffset);
}
inline StackHandler* StackHandler::FromAddress(Address address) {
return reinterpret_cast<StackHandler*>(address);
}
inline StackFrame::StackFrame(StackFrameIteratorBase* iterator)
: iterator_(iterator), isolate_(iterator_->isolate()) {
}
inline StackHandler* StackFrame::top_handler() const {
return iterator_->handler();
}
inline Address* StackFrame::ResolveReturnAddressLocation(Address* pc_address) {
if (return_address_location_resolver_ == nullptr) {
return pc_address;
} else {
return reinterpret_cast<Address*>(
return_address_location_resolver_(
reinterpret_cast<uintptr_t>(pc_address)));
}
}
inline NativeFrame::NativeFrame(StackFrameIteratorBase* iterator)
: StackFrame(iterator) {}
inline Address NativeFrame::GetCallerStackPointer() const {
return fp() + CommonFrameConstants::kCallerSPOffset;
}
inline EntryFrame::EntryFrame(StackFrameIteratorBase* iterator)
: StackFrame(iterator) {}
inline ConstructEntryFrame::ConstructEntryFrame(
StackFrameIteratorBase* iterator)
: EntryFrame(iterator) {}
inline ExitFrame::ExitFrame(StackFrameIteratorBase* iterator)
: StackFrame(iterator) {}
inline BuiltinExitFrame::BuiltinExitFrame(StackFrameIteratorBase* iterator)
: ExitFrame(iterator) {}
inline Object BuiltinExitFrame::receiver_slot_object() const {
// The receiver is the first argument on the frame.
// fp[1]: return address.
// fp[2]: the last argument (new target).
// fp[4]: argc.
// fp[2 + argc - 1]: receiver.
Object argc_slot = argc_slot_object();
DCHECK(argc_slot.IsSmi());
int argc = Smi::ToInt(argc_slot);
const int receiverOffset = BuiltinExitFrameConstants::kNewTargetOffset +
(argc - 1) * kSystemPointerSize;
return Object(Memory<Address>(fp() + receiverOffset));
}
inline Object BuiltinExitFrame::argc_slot_object() const {
return Object(Memory<Address>(fp() + BuiltinExitFrameConstants::kArgcOffset));
}
inline Object BuiltinExitFrame::target_slot_object() const {
return Object(
Memory<Address>(fp() + BuiltinExitFrameConstants::kTargetOffset));
}
inline Object BuiltinExitFrame::new_target_slot_object() const {
return Object(
Memory<Address>(fp() + BuiltinExitFrameConstants::kNewTargetOffset));
}
inline StandardFrame::StandardFrame(StackFrameIteratorBase* iterator)
: StackFrame(iterator) {
}
inline Object StandardFrame::GetExpression(int index) const {
return Object(Memory<Address>(GetExpressionAddress(index)));
}
inline void StandardFrame::SetExpression(int index, Object value) {
Memory<Address>(GetExpressionAddress(index)) = value.ptr();
}
inline Address StandardFrame::caller_fp() const {
return Memory<Address>(fp() + StandardFrameConstants::kCallerFPOffset);
}
inline Address StandardFrame::caller_pc() const {
return Memory<Address>(ComputePCAddress(fp()));
}
inline Address StandardFrame::ComputePCAddress(Address fp) {
return fp + StandardFrameConstants::kCallerPCOffset;
}
inline Address StandardFrame::ComputeConstantPoolAddress(Address fp) {
return fp + StandardFrameConstants::kConstantPoolOffset;
}
inline bool StandardFrame::IsArgumentsAdaptorFrame(Address fp) {
intptr_t frame_type =
Memory<intptr_t>(fp + TypedFrameConstants::kFrameTypeOffset);
return frame_type == StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR);
}
inline bool StandardFrame::IsConstructFrame(Address fp) {
intptr_t frame_type =
Memory<intptr_t>(fp + TypedFrameConstants::kFrameTypeOffset);
return frame_type == StackFrame::TypeToMarker(StackFrame::CONSTRUCT);
}
inline JavaScriptFrame::JavaScriptFrame(StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {}
Address JavaScriptFrame::GetParameterSlot(int index) const {
int param_count = ComputeParametersCount();
DCHECK(-1 <= index &&
(index < param_count ||
param_count == SharedFunctionInfo::kDontAdaptArgumentsSentinel));
int parameter_offset = (param_count - index - 1) * kSystemPointerSize;
return caller_sp() + parameter_offset;
}
inline void JavaScriptFrame::set_receiver(Object value) {
Memory<Address>(GetParameterSlot(-1)) = value.ptr();
}
inline bool JavaScriptFrame::has_adapted_arguments() const {
return IsArgumentsAdaptorFrame(caller_fp());
}
inline Object JavaScriptFrame::function_slot_object() const {
const int offset = JavaScriptFrameConstants::kFunctionOffset;
return Object(Memory<Address>(fp() + offset));
}
inline StubFrame::StubFrame(StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {
}
inline OptimizedFrame::OptimizedFrame(StackFrameIteratorBase* iterator)
: JavaScriptFrame(iterator) {
}
inline InterpretedFrame::InterpretedFrame(StackFrameIteratorBase* iterator)
: JavaScriptFrame(iterator) {}
inline ArgumentsAdaptorFrame::ArgumentsAdaptorFrame(
StackFrameIteratorBase* iterator) : JavaScriptFrame(iterator) {
}
inline BuiltinFrame::BuiltinFrame(StackFrameIteratorBase* iterator)
: JavaScriptFrame(iterator) {}
inline WasmCompiledFrame::WasmCompiledFrame(StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {}
inline WasmInterpreterEntryFrame::WasmInterpreterEntryFrame(
StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {}
inline WasmToJsFrame::WasmToJsFrame(StackFrameIteratorBase* iterator)
: StubFrame(iterator) {}
inline JsToWasmFrame::JsToWasmFrame(StackFrameIteratorBase* iterator)
: StubFrame(iterator) {}
inline CWasmEntryFrame::CWasmEntryFrame(StackFrameIteratorBase* iterator)
: StubFrame(iterator) {}
inline WasmCompileLazyFrame::WasmCompileLazyFrame(
StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {}
inline InternalFrame::InternalFrame(StackFrameIteratorBase* iterator)
: StandardFrame(iterator) {
}
inline ConstructFrame::ConstructFrame(StackFrameIteratorBase* iterator)
: InternalFrame(iterator) {
}
inline BuiltinContinuationFrame::BuiltinContinuationFrame(
StackFrameIteratorBase* iterator)
: InternalFrame(iterator) {}
inline JavaScriptBuiltinContinuationFrame::JavaScriptBuiltinContinuationFrame(
StackFrameIteratorBase* iterator)
: JavaScriptFrame(iterator) {}
inline JavaScriptBuiltinContinuationWithCatchFrame::
JavaScriptBuiltinContinuationWithCatchFrame(
StackFrameIteratorBase* iterator)
: JavaScriptBuiltinContinuationFrame(iterator) {}
inline JavaScriptFrameIterator::JavaScriptFrameIterator(
Isolate* isolate)
: iterator_(isolate) {
if (!done()) Advance();
}
inline JavaScriptFrameIterator::JavaScriptFrameIterator(
Isolate* isolate, ThreadLocalTop* top)
: iterator_(isolate, top) {
if (!done()) Advance();
}
inline JavaScriptFrame* JavaScriptFrameIterator::frame() const {
// TODO(1233797): The frame hierarchy needs to change. It's
// problematic that we can't use the safe-cast operator to cast to
// the JavaScript frame type, because we may encounter arguments
// adaptor frames.
StackFrame* frame = iterator_.frame();
DCHECK(frame->is_java_script() || frame->is_arguments_adaptor());
return static_cast<JavaScriptFrame*>(frame);
}
inline StandardFrame* StackTraceFrameIterator::frame() const {
StackFrame* frame = iterator_.frame();
DCHECK(frame->is_java_script() || frame->is_arguments_adaptor() ||
frame->is_wasm());
return static_cast<StandardFrame*>(frame);
}
bool StackTraceFrameIterator::is_javascript() const {
return frame()->is_java_script();
}
bool StackTraceFrameIterator::is_wasm() const { return frame()->is_wasm(); }
JavaScriptFrame* StackTraceFrameIterator::javascript_frame() const {
return JavaScriptFrame::cast(frame());
}
inline StackFrame* SafeStackFrameIterator::frame() const {
DCHECK(!done());
DCHECK(frame_->is_java_script() || frame_->is_exit() ||
frame_->is_builtin_exit() || frame_->is_wasm());
return frame_;
}
} // namespace internal
} // namespace v8
#endif // V8_EXECUTION_FRAMES_INL_H_