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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 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/cpu.h" | 8 #include "vm/cpu.h" |
9 #include "vm/instructions.h" | 9 #include "vm/instructions.h" |
10 #include "vm/object.h" | 10 #include "vm/object.h" |
11 | 11 |
12 namespace dart { | 12 namespace dart { |
13 | 13 |
14 intptr_t InstructionPattern::IndexFromPPLoad(uword start) { | 14 intptr_t InstructionPattern::IndexFromPPLoad(uword start) { |
15 int32_t offset = *reinterpret_cast<int32_t*>(start); | 15 int32_t offset = *reinterpret_cast<int32_t*>(start); |
16 offset += kHeapObjectTag; | 16 offset += kHeapObjectTag; |
17 return (offset - Array::data_offset()) / kWordSize; | 17 return (offset - Array::data_offset()) / kWordSize; |
18 } | 18 } |
19 | 19 |
20 | 20 |
21 bool InstructionPattern::TestBytesWith(const int* data, int num_bytes) const { | 21 bool InstructionPattern::TestBytesWith(const int* data, int num_bytes) const { |
22 ASSERT(data != NULL); | 22 ASSERT(data != NULL); |
23 const uint8_t* byte_array = reinterpret_cast<const uint8_t*>(start_); | 23 const uint8_t* byte_array = reinterpret_cast<const uint8_t*>(start_); |
24 for (int i = 0; i < num_bytes; i++) { | 24 for (int i = 0; i < num_bytes; i++) { |
25 // Skip comparison for data[i] < 0. | 25 // Skip comparison for data[i] < 0. |
26 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { | 26 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { |
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86 | 86 |
87 | 87 |
88 const int* ShortCallPattern::pattern() const { | 88 const int* ShortCallPattern::pattern() const { |
89 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1}; | 89 static const int kCallPattern[kLengthInBytes] = {0xE8, -1, -1, -1, -1}; |
90 return kCallPattern; | 90 return kCallPattern; |
91 } | 91 } |
92 | 92 |
93 } // namespace dart | 93 } // namespace dart |
94 | 94 |
95 #endif // defined TARGET_ARCH_X64 | 95 #endif // defined TARGET_ARCH_X64 |
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