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Side by Side Diff: runtime/vm/instructions_x64.h

Issue 1192103004: VM: New calling convention for generated code. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: fixed comments Created 5 years, 3 months ago
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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 // 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_X64_H_ 6 #ifndef VM_INSTRUCTIONS_X64_H_
7 #define VM_INSTRUCTIONS_X64_H_ 7 #define VM_INSTRUCTIONS_X64_H_
8 8
9 #ifndef VM_INSTRUCTIONS_H_ 9 #ifndef VM_INSTRUCTIONS_H_
10 #error Do not include instructions_ia32.h directly; use instructions.h instead. 10 #error Do not include instructions_ia32.h directly; use instructions.h instead.
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58 } 58 }
59 return true; 59 return true;
60 } 60 }
61 61
62 const uword start_; 62 const uword start_;
63 63
64 DISALLOW_COPY_AND_ASSIGN(InstructionPattern); 64 DISALLOW_COPY_AND_ASSIGN(InstructionPattern);
65 }; 65 };
66 66
67 67
68 class JumpPattern : public InstructionPattern<JumpPattern> {
69 public:
70 JumpPattern(uword pc, const Code& code)
71 : InstructionPattern(pc),
72 object_pool_(ObjectPool::Handle(code.GetObjectPool())) {}
73
74 uword TargetAddress() const;
75 void SetTargetAddress(uword new_target) const;
76
77 static const int kLengthInBytes = 7;
78 static int pattern_length_in_bytes() { return kLengthInBytes; }
79 static const int* pattern() {
80 // 07: 41 ff a7 imm32 jmpq [reg + off]
81 static const int kJumpPattern[kLengthInBytes] =
82 {0x41, 0xFF, -1, -1, -1, -1, -1};
83 return kJumpPattern;
84 }
85 private:
86 const ObjectPool& object_pool_;
87
88 DISALLOW_COPY_AND_ASSIGN(JumpPattern);
89 };
90
91
92 // 5 byte call instruction. 68 // 5 byte call instruction.
93 class ShortCallPattern : public InstructionPattern<ShortCallPattern> { 69 class ShortCallPattern : public InstructionPattern<ShortCallPattern> {
94 public: 70 public:
95 explicit ShortCallPattern(uword pc) : InstructionPattern(pc) {} 71 explicit ShortCallPattern(uword pc) : InstructionPattern(pc) {}
96 72
97 void SetTargetAddress(uword new_target) const; 73 void SetTargetAddress(uword new_target) const;
98 74
99 static int pattern_length_in_bytes() { return kLengthInBytes; } 75 static int pattern_length_in_bytes() { return kLengthInBytes; }
100 static const int* pattern() { 76 static const int* pattern() {
101 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1}; 77 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1};
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157 133
158 static int pattern_length_in_bytes() { return kLengthInBytes; } 134 static int pattern_length_in_bytes() { return kLengthInBytes; }
159 135
160 private: 136 private:
161 static const int kLengthInBytes = 3; 137 static const int kLengthInBytes = 3;
162 }; 138 };
163 139
164 } // namespace dart 140 } // namespace dart
165 141
166 #endif // VM_INSTRUCTIONS_X64_H_ 142 #endif // VM_INSTRUCTIONS_X64_H_
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