asiva@google.com
e360e4d1c9
- Added functionality to be able to build stack maps in the compiler and register them into the Code object during Code finalization. - Merged code_generator_ia32_test.cc and code_generator_x64_test.cc into code_generator_test.cc as the two files were identical. Review URL: https://chromiumcodereview.appspot.com//9721006 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@5764 260f80e4-7a28-3924-810f-c04153c831b5
117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_CODE_DESCRIPTORS_H_
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#define VM_CODE_DESCRIPTORS_H_
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#include "vm/globals.h"
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#include "vm/growable_array.h"
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#include "vm/object.h"
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namespace dart {
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class DescriptorList : public ZoneAllocated {
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public:
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struct PcDesc {
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intptr_t pc_offset; // PC offset value of the descriptor.
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PcDescriptors::Kind kind; // Descriptor kind (kDeopt, kOther).
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intptr_t node_id; // AST node id.
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intptr_t token_index; // Token position in source of PC.
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intptr_t try_index; // Try block index of PC.
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};
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DescriptorList() : list_() {
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}
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~DescriptorList() { }
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intptr_t Length() const {
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return list_.length();
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}
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intptr_t PcOffset(int index) const {
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return list_[index].pc_offset;
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}
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PcDescriptors::Kind Kind(int index) const {
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return list_[index].kind;
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}
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intptr_t NodeId(int index) const {
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return list_[index].node_id;
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}
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intptr_t TokenIndex(int index) const {
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return list_[index].token_index;
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}
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intptr_t TryIndex(int index) const {
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return list_[index].try_index;
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}
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void AddDescriptor(PcDescriptors::Kind kind,
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intptr_t pc_offset,
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intptr_t node_id,
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intptr_t token_index,
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intptr_t try_index);
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RawPcDescriptors* FinalizePcDescriptors(uword entry_point);
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private:
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GrowableArray<struct PcDesc> list_;
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DISALLOW_COPY_AND_ASSIGN(DescriptorList);
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};
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class StackmapBuilder : public ZoneAllocated {
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public:
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StackmapBuilder() :
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builder_(new BitmapBuilder()),
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code_(Code::ZoneHandle()),
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stack_map_(Stackmap::ZoneHandle()),
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list_(GrowableObjectArray::ZoneHandle(GrowableObjectArray::New())) { }
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~StackmapBuilder() { }
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// Gets state of stack slot (object or regular value).
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bool IsSlotObject(intptr_t stack_slot) const {
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ASSERT(builder_ != NULL);
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return builder_->Get(stack_slot);
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}
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// Sets stack slot as containing an object.
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void SetSlotAsObject(intptr_t stack_slot) {
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ASSERT(builder_ != NULL);
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builder_->Set(stack_slot, true);
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}
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// Sets stack slot as containing regular value.
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void SetSlotAsValue(intptr_t stack_slot) {
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ASSERT(builder_ != NULL);
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builder_->Set(stack_slot, false);
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}
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// Sets min..max (inclusive) as stack slots containing objects.
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void SetSlotRangeAsObject(intptr_t min_stack_slot, intptr_t max_stack_slot) {
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ASSERT(builder_ != NULL);
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builder_->SetRange(min_stack_slot, max_stack_slot, true);
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}
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// Sets min..max (inclusive) as stack slots containing regular values.
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void SetSlotRangeAsValue(intptr_t min_stack_slot, intptr_t max_stack_slot) {
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ASSERT(builder_ != NULL);
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builder_->SetRange(min_stack_slot, max_stack_slot, false);
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}
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void AddEntry(intptr_t pc_offset);
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bool Verify();
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RawArray* FinalizeStackmaps(const Code& code);
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private:
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intptr_t Length() const { return list_.Length(); }
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RawStackmap* Map(int index) const;
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BitmapBuilder* builder_;
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Code& code_;
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Stackmap& stack_map_;
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GrowableObjectArray& list_;
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DISALLOW_COPY_AND_ASSIGN(StackmapBuilder);
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};
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} // namespace dart
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#endif // VM_CODE_DESCRIPTORS_H_
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