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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 // Classes that describe assembly patterns as used by inline caches. | 4 // Classes that describe assembly patterns as used by inline caches. |
5 | 5 |
6 #ifndef VM_INSTRUCTIONS_ARM_H_ | 6 #ifndef VM_INSTRUCTIONS_ARM_H_ |
7 #define VM_INSTRUCTIONS_ARM_H_ | 7 #define VM_INSTRUCTIONS_ARM_H_ |
8 | 8 |
9 #ifndef VM_INSTRUCTIONS_H_ | 9 #ifndef VM_INSTRUCTIONS_H_ |
10 #error Do not include instructions_arm.h directly; use instructions.h instead. | 10 #error Do not include instructions_arm.h directly; use instructions.h instead. |
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47 intptr_t* index); | 47 intptr_t* index); |
48 }; | 48 }; |
49 | 49 |
50 | 50 |
51 class CallPattern : public ValueObject { | 51 class CallPattern : public ValueObject { |
52 public: | 52 public: |
53 CallPattern(uword pc, const Code& code); | 53 CallPattern(uword pc, const Code& code); |
54 | 54 |
55 RawICData* IcData(); | 55 RawICData* IcData(); |
56 | 56 |
57 uword TargetAddress() const; | 57 RawCode* TargetCode() const; |
58 void SetTargetAddress(uword target_address) const; | 58 void SetTargetCode(const Code& code) const; |
59 | 59 |
60 // This constant length is only valid for inserted call patterns used for | 60 // This constant length is only valid for inserted call patterns used for |
61 // lazy deoptimization. Regular call pattern may vary in length. | 61 // lazy deoptimization. Regular call pattern may vary in length. |
62 static int LengthInBytes(); | 62 static int DeoptCallPatternLengthInBytes(); |
63 | 63 |
64 static void InsertAt(uword pc, uword target_address); | 64 static void InsertDeoptCallAt(uword pc, uword target_address); |
65 | 65 |
66 private: | 66 private: |
67 const ObjectPool& object_pool_; | 67 const ObjectPool& object_pool_; |
68 | 68 |
69 uword end_; | 69 uword end_; |
70 uword ic_data_load_end_; | 70 uword ic_data_load_end_; |
71 | 71 |
72 intptr_t target_address_pool_index_; | 72 intptr_t target_code_pool_index_; |
73 ICData& ic_data_; | 73 ICData& ic_data_; |
74 | 74 |
75 DISALLOW_COPY_AND_ASSIGN(CallPattern); | 75 DISALLOW_COPY_AND_ASSIGN(CallPattern); |
76 }; | 76 }; |
77 | 77 |
78 | 78 |
79 class NativeCallPattern : public ValueObject { | 79 class NativeCallPattern : public ValueObject { |
80 public: | 80 public: |
81 NativeCallPattern(uword pc, const Code& code); | 81 NativeCallPattern(uword pc, const Code& code); |
82 | 82 |
83 uword target() const; | 83 RawCode* target() const; |
84 void set_target(uword target_address) const; | 84 void set_target(const Code& target) const; |
85 | 85 |
86 NativeFunction native_function() const; | 86 NativeFunction native_function() const; |
87 void set_native_function(NativeFunction target) const; | 87 void set_native_function(NativeFunction target) const; |
88 | 88 |
89 private: | 89 private: |
90 const ObjectPool& object_pool_; | 90 const ObjectPool& object_pool_; |
91 | 91 |
92 uword end_; | 92 uword end_; |
93 intptr_t native_function_pool_index_; | 93 intptr_t native_function_pool_index_; |
94 intptr_t target_address_pool_index_; | 94 intptr_t target_code_pool_index_; |
95 | 95 |
96 DISALLOW_COPY_AND_ASSIGN(NativeCallPattern); | 96 DISALLOW_COPY_AND_ASSIGN(NativeCallPattern); |
97 }; | 97 }; |
98 | 98 |
99 | 99 |
100 class JumpPattern : public ValueObject { | |
101 public: | |
102 JumpPattern(uword pc, const Code& code); | |
103 | |
104 static const int kLengthInBytes = 3 * Instr::kInstrSize; | |
105 | |
106 static int pattern_length_in_bytes(); | |
107 | |
108 bool IsValid() const; | |
109 uword TargetAddress() const; | |
110 void SetTargetAddress(uword target_address) const; | |
111 | |
112 private: | |
113 const uword pc_; | |
114 | |
115 DISALLOW_COPY_AND_ASSIGN(JumpPattern); | |
116 }; | |
117 | |
118 | |
119 class ReturnPattern : public ValueObject { | 100 class ReturnPattern : public ValueObject { |
120 public: | 101 public: |
121 explicit ReturnPattern(uword pc); | 102 explicit ReturnPattern(uword pc); |
122 | 103 |
123 // bx_lr = 1. | 104 // bx_lr = 1. |
124 static const int kLengthInBytes = 1 * Instr::kInstrSize; | 105 static const int kLengthInBytes = 1 * Instr::kInstrSize; |
125 | 106 |
126 int pattern_length_in_bytes() const { | 107 int pattern_length_in_bytes() const { |
127 return kLengthInBytes; | 108 return kLengthInBytes; |
128 } | 109 } |
129 | 110 |
130 bool IsValid() const; | 111 bool IsValid() const; |
131 | 112 |
132 private: | 113 private: |
133 const uword pc_; | 114 const uword pc_; |
134 }; | 115 }; |
135 | 116 |
136 } // namespace dart | 117 } // namespace dart |
137 | 118 |
138 #endif // VM_INSTRUCTIONS_ARM_H_ | 119 #endif // VM_INSTRUCTIONS_ARM_H_ |
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