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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/instructions.h" | 8 #include "vm/instructions.h" |
9 #include "vm/object.h" | 9 #include "vm/object.h" |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 | 12 |
13 bool Instruction::TestBytesWith(const int* data, int num_bytes) const { | 13 bool Instruction::TestBytesWith(const int* data, int num_bytes) const { |
14 ASSERT(data != NULL); | 14 ASSERT(data != NULL); |
15 const uint8_t* byte_array = reinterpret_cast<const uint8_t*>(start_); | 15 const uint8_t* byte_array = reinterpret_cast<const uint8_t*>(start_); |
16 for (int i = 0; i < num_bytes; i++) { | 16 for (int i = 0; i < num_bytes; i++) { |
17 // Skip comparison for data[i] < 0. | 17 // Skip comparison for data[i] < 0. |
18 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { | 18 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { |
19 return false; | 19 return false; |
20 } | 20 } |
21 } | 21 } |
22 return true; | 22 return true; |
23 } | 23 } |
24 | 24 |
25 | 25 |
26 const int* ICLoadReceiver::pattern() const { | |
27 static const int kLoadReceiverPattern[kLengthInBytes] = | |
28 {0x8b, 0x42, 0x0b, 0x8b, 0x04, 0x44}; | |
29 return kLoadReceiverPattern; | |
30 } | |
31 | |
32 | |
33 uword JumpIfZero::TargetAddress() const { | |
34 ASSERT(IsValid()); | |
35 return start() + kLengthInBytes + *reinterpret_cast<uword*>(start() + 2); | |
36 } | |
37 | |
38 | |
39 void JumpIfZero::SetTargetAddress(uword pc) { | |
40 ASSERT(IsValid()); | |
41 *reinterpret_cast<uword*>(start() + 2) = pc - start() - kLengthInBytes; | |
42 } | |
43 | |
44 | |
45 const int* JumpIfZero::pattern() const { | |
46 static const int kJzPattern[kLengthInBytes] = {0x0f, 0x84, -1, -1, -1, -1}; | |
47 return kJzPattern; | |
48 } | |
49 | |
50 | |
51 const int* CmpEaxWithImmediate::pattern() const { | |
52 static const int kCmpWithImmediate[kLengthInBytes] = {0x3d, -1, -1, -1, -1}; | |
53 return kCmpWithImmediate; | |
54 } | |
55 | |
56 | |
57 const int* TestEaxIsSmi::pattern() const { | |
58 static const int | |
59 kTestSmiTag[kTestLengthInBytes + JumpIfZero::kLengthInBytes] = | |
60 { 0xa8, 0x01, -1, -1, -1, -1, -1, -1}; | |
61 return kTestSmiTag; | |
62 } | |
63 | |
64 | |
65 const int* ICCheckReceiverClass::pattern() const { | |
66 static const int kTestClass[kTestLengthInBytes + JumpIfZero::kLengthInBytes] = | |
67 {0x81, 0xfb, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}; | |
68 return kTestClass; | |
69 } | |
70 | |
71 | |
72 RawClass* ICCheckReceiverClass::TestClass() const { | |
73 ASSERT(IsValid()); | |
74 Class& cls = Class::Handle(); | |
75 cls ^= *reinterpret_cast<RawObject**>(start() + 2); | |
76 return cls.raw(); | |
77 } | |
78 | |
79 | |
80 const int* LoadObjectClass::pattern() const { | |
81 static const int kTestClass[kLoadObjectClassLengthInBytes] = | |
82 {0x8b, 0x58, 0xff}; | |
83 return kTestClass; | |
84 } | |
85 | |
86 uword CallOrJump::TargetAddress() const { | 26 uword CallOrJump::TargetAddress() const { |
87 ASSERT(IsValid()); | 27 ASSERT(IsValid()); |
88 return start() + kLengthInBytes + *reinterpret_cast<uword*>(start() + 1); | 28 return start() + kLengthInBytes + *reinterpret_cast<uword*>(start() + 1); |
89 } | 29 } |
90 | 30 |
91 | 31 |
92 void CallOrJump::SetTargetAddress(uword target) const { | 32 void CallOrJump::SetTargetAddress(uword target) const { |
93 ASSERT(IsValid()); | 33 ASSERT(IsValid()); |
94 *reinterpret_cast<uword*>(start() + 1) = target - start() - kLengthInBytes; | 34 *reinterpret_cast<uword*>(start() + 1) = target - start() - kLengthInBytes; |
95 } | 35 } |
96 | 36 |
97 | 37 |
98 const int* Call::pattern() const { | 38 const int* Call::pattern() const { |
99 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1}; | 39 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1}; |
100 return kCallPattern; | 40 return kCallPattern; |
101 } | 41 } |
102 | 42 |
103 | 43 |
104 const int* Jump::pattern() const { | 44 const int* Jump::pattern() const { |
105 static const int kJumpPattern[kLengthInBytes] = {0xE9, -1, -1, -1, -1}; | 45 static const int kJumpPattern[kLengthInBytes] = {0xE9, -1, -1, -1, -1}; |
106 return kJumpPattern; | 46 return kJumpPattern; |
107 } | 47 } |
108 | 48 |
109 | 49 |
110 } // namespace dart | 50 } // namespace dart |
111 | 51 |
112 #endif // defined TARGET_ARCH_IA32 | 52 #endif // defined TARGET_ARCH_IA32 |
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