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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef RUNTIME_VM_CODE_DESCRIPTORS_H_ | 5 #ifndef RUNTIME_VM_CODE_DESCRIPTORS_H_ |
| 6 #define RUNTIME_VM_CODE_DESCRIPTORS_H_ | 6 #define RUNTIME_VM_CODE_DESCRIPTORS_H_ |
| 7 | 7 |
| 8 #include "vm/ast.h" | 8 #include "vm/ast.h" |
| 9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
| 10 #include "vm/globals.h" | 10 #include "vm/globals.h" |
| 11 #include "vm/growable_array.h" | 11 #include "vm/growable_array.h" |
| 12 #include "vm/object.h" | 12 #include "vm/object.h" |
| 13 | 13 |
| 14 namespace dart { | 14 namespace dart { |
| 15 | 15 |
| 16 class DescriptorList : public ZoneAllocated { | 16 class DescriptorList : public ZoneAllocated { |
| 17 public: | 17 public: |
| 18 explicit DescriptorList(intptr_t initial_capacity) | 18 explicit DescriptorList(intptr_t initial_capacity) |
| 19 : encoded_data_(initial_capacity), | 19 : encoded_data_(initial_capacity), |
| 20 prev_pc_offset(0), | 20 prev_pc_offset(0), |
| 21 prev_deopt_id(0), | 21 prev_deopt_id(0), |
| 22 prev_token_pos(0) {} | 22 prev_token_pos(0) {} |
| 23 | 23 |
| 24 ~DescriptorList() { } | 24 ~DescriptorList() {} |
| 25 | 25 |
| 26 void AddDescriptor(RawPcDescriptors::Kind kind, | 26 void AddDescriptor(RawPcDescriptors::Kind kind, |
| 27 intptr_t pc_offset, | 27 intptr_t pc_offset, |
| 28 intptr_t deopt_id, | 28 intptr_t deopt_id, |
| 29 TokenPosition token_pos, | 29 TokenPosition token_pos, |
| 30 intptr_t try_index); | 30 intptr_t try_index); |
| 31 | 31 |
| 32 RawPcDescriptors* FinalizePcDescriptors(uword entry_point); | 32 RawPcDescriptors* FinalizePcDescriptors(uword entry_point); |
| 33 | 33 |
| 34 private: | 34 private: |
| 35 GrowableArray<uint8_t> encoded_data_; | 35 GrowableArray<uint8_t> encoded_data_; |
| 36 | 36 |
| 37 intptr_t prev_pc_offset; | 37 intptr_t prev_pc_offset; |
| 38 intptr_t prev_deopt_id; | 38 intptr_t prev_deopt_id; |
| 39 intptr_t prev_token_pos; | 39 intptr_t prev_token_pos; |
| 40 | 40 |
| 41 DISALLOW_COPY_AND_ASSIGN(DescriptorList); | 41 DISALLOW_COPY_AND_ASSIGN(DescriptorList); |
| 42 }; | 42 }; |
| 43 | 43 |
| 44 | 44 |
| 45 class CodeSourceMapBuilder : public ZoneAllocated { | 45 class CodeSourceMapBuilder : public ZoneAllocated { |
| 46 public: | 46 public: |
| 47 explicit CodeSourceMapBuilder(intptr_t initial_capacity = 64) | 47 explicit CodeSourceMapBuilder(intptr_t initial_capacity = 64) |
| 48 : encoded_data_(initial_capacity), | 48 : encoded_data_(initial_capacity), prev_pc_offset(0), prev_token_pos(0) {} |
| 49 prev_pc_offset(0), | |
| 50 prev_token_pos(0) {} | |
| 51 | 49 |
| 52 ~CodeSourceMapBuilder() { } | 50 ~CodeSourceMapBuilder() {} |
| 53 | 51 |
| 54 void AddEntry(intptr_t pc_offset, TokenPosition token_pos); | 52 void AddEntry(intptr_t pc_offset, TokenPosition token_pos); |
| 55 | 53 |
| 56 RawCodeSourceMap* Finalize(); | 54 RawCodeSourceMap* Finalize(); |
| 57 | 55 |
| 58 private: | 56 private: |
| 59 GrowableArray<uint8_t> encoded_data_; | 57 GrowableArray<uint8_t> encoded_data_; |
| 60 | 58 |
| 61 intptr_t prev_pc_offset; | 59 intptr_t prev_pc_offset; |
| 62 intptr_t prev_token_pos; | 60 intptr_t prev_token_pos; |
| 63 | 61 |
| 64 DISALLOW_COPY_AND_ASSIGN(CodeSourceMapBuilder); | 62 DISALLOW_COPY_AND_ASSIGN(CodeSourceMapBuilder); |
| 65 }; | 63 }; |
| 66 | 64 |
| 67 | 65 |
| 68 class StackmapTableBuilder : public ZoneAllocated { | 66 class StackmapTableBuilder : public ZoneAllocated { |
| 69 public: | 67 public: |
| 70 StackmapTableBuilder() | 68 StackmapTableBuilder() |
| 71 : stack_map_(Stackmap::ZoneHandle()), | 69 : stack_map_(Stackmap::ZoneHandle()), |
| 72 list_(GrowableObjectArray::ZoneHandle( | 70 list_(GrowableObjectArray::ZoneHandle( |
| 73 GrowableObjectArray::New(Heap::kOld))) { } | 71 GrowableObjectArray::New(Heap::kOld))) {} |
| 74 ~StackmapTableBuilder() { } | 72 ~StackmapTableBuilder() {} |
| 75 | 73 |
| 76 void AddEntry(intptr_t pc_offset, | 74 void AddEntry(intptr_t pc_offset, |
| 77 BitmapBuilder* bitmap, | 75 BitmapBuilder* bitmap, |
| 78 intptr_t register_bit_count); | 76 intptr_t register_bit_count); |
| 79 | 77 |
| 80 bool Verify(); | 78 bool Verify(); |
| 81 | 79 |
| 82 RawArray* FinalizeStackmaps(const Code& code); | 80 RawArray* FinalizeStackmaps(const Code& code); |
| 83 | 81 |
| 84 private: | 82 private: |
| 85 intptr_t Length() const { return list_.Length(); } | 83 intptr_t Length() const { return list_.Length(); } |
| 86 RawStackmap* MapAt(intptr_t index) const; | 84 RawStackmap* MapAt(intptr_t index) const; |
| 87 | 85 |
| 88 Stackmap& stack_map_; | 86 Stackmap& stack_map_; |
| 89 GrowableObjectArray& list_; | 87 GrowableObjectArray& list_; |
| 90 DISALLOW_COPY_AND_ASSIGN(StackmapTableBuilder); | 88 DISALLOW_COPY_AND_ASSIGN(StackmapTableBuilder); |
| 91 }; | 89 }; |
| 92 | 90 |
| 93 | 91 |
| 94 class ExceptionHandlerList : public ZoneAllocated { | 92 class ExceptionHandlerList : public ZoneAllocated { |
| 95 public: | 93 public: |
| 96 struct HandlerDesc { | 94 struct HandlerDesc { |
| 97 intptr_t outer_try_index; // Try block in which this try block is nested. | 95 intptr_t outer_try_index; // Try block in which this try block is nested. |
| 98 intptr_t pc_offset; // Handler PC offset value. | 96 intptr_t pc_offset; // Handler PC offset value. |
| 99 const Array* handler_types; // Catch clause guards. | 97 const Array* handler_types; // Catch clause guards. |
| 100 bool needs_stacktrace; | 98 bool needs_stacktrace; |
| 101 }; | 99 }; |
| 102 | 100 |
| 103 ExceptionHandlerList() : list_() {} | 101 ExceptionHandlerList() : list_() {} |
| 104 | 102 |
| 105 intptr_t Length() const { | 103 intptr_t Length() const { return list_.length(); } |
| 106 return list_.length(); | |
| 107 } | |
| 108 | 104 |
| 109 void AddPlaceHolder() { | 105 void AddPlaceHolder() { |
| 110 struct HandlerDesc data; | 106 struct HandlerDesc data; |
| 111 data.outer_try_index = -1; | 107 data.outer_try_index = -1; |
| 112 data.pc_offset = ExceptionHandlers::kInvalidPcOffset; | 108 data.pc_offset = ExceptionHandlers::kInvalidPcOffset; |
| 113 data.handler_types = NULL; | 109 data.handler_types = NULL; |
| 114 data.needs_stacktrace = false; | 110 data.needs_stacktrace = false; |
| 115 list_.Add(data); | 111 list_.Add(data); |
| 116 } | 112 } |
| 117 | 113 |
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| 159 RawExceptionHandlers* FinalizeExceptionHandlers(uword entry_point) const; | 155 RawExceptionHandlers* FinalizeExceptionHandlers(uword entry_point) const; |
| 160 | 156 |
| 161 private: | 157 private: |
| 162 GrowableArray<struct HandlerDesc> list_; | 158 GrowableArray<struct HandlerDesc> list_; |
| 163 DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerList); | 159 DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerList); |
| 164 }; | 160 }; |
| 165 | 161 |
| 166 } // namespace dart | 162 } // namespace dart |
| 167 | 163 |
| 168 #endif // RUNTIME_VM_CODE_DESCRIPTORS_H_ | 164 #endif // RUNTIME_VM_CODE_DESCRIPTORS_H_ |
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