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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" |
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29 for (int i = 0; i < num_bytes; i++) { | 29 for (int i = 0; i < num_bytes; i++) { |
30 // Skip comparison for data[i] < 0. | 30 // Skip comparison for data[i] < 0. |
31 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { | 31 if ((data[i] >= 0) && (byte_array[i] != (0xFF & data[i]))) { |
32 return false; | 32 return false; |
33 } | 33 } |
34 } | 34 } |
35 return true; | 35 return true; |
36 } | 36 } |
37 | 37 |
38 | 38 |
39 uword JumpPattern::TargetAddress() const { | 39 RawCode* JumpPattern::TargetCode() const { |
40 ASSERT(IsValid()); | 40 ASSERT(IsValid()); |
41 int index = InstructionPattern::IndexFromPPLoad(start() + 3); | 41 int index = InstructionPattern::IndexFromPPLoad(start() + 3); |
42 return object_pool_.RawValueAt(index); | 42 Code& code = Code::Handle(); |
| 43 code ^= object_pool_.ObjectAt(index); |
| 44 return code.raw(); |
43 } | 45 } |
44 | 46 |
45 | 47 |
46 void JumpPattern::SetTargetAddress(uword target) const { | 48 void JumpPattern::SetTargetCode(const Code& target) const { |
47 ASSERT(IsValid()); | 49 ASSERT(IsValid()); |
48 int index = InstructionPattern::IndexFromPPLoad(start() + 3); | 50 int index = InstructionPattern::IndexFromPPLoad(start() + 3); |
49 object_pool_.SetRawValueAt(index, target); | 51 object_pool_.SetObjectAt(index, target); |
50 // No need to flush the instruction cache, since the code is not modified. | 52 // No need to flush the instruction cache, since the code is not modified. |
51 } | 53 } |
52 | 54 |
53 | 55 |
54 const int* JumpPattern::pattern() const { | 56 const int* JumpPattern::pattern() const { |
55 // 07: 41 ff a7 imm32 jmpq [reg + off] | 57 // 0: 4d 8b a5 imm32 movq CR, [PP + offs] |
| 58 // 7: 4d 8b 5c 24 07 movq TMP, [CR + insns_offs] |
| 59 // 12: 49 83 c3 1f addq TMP, entry_offs |
| 60 // 16: 41 ff e3 jmp TMP |
| 61 // 19: |
56 static const int kJumpPattern[kLengthInBytes] = | 62 static const int kJumpPattern[kLengthInBytes] = |
57 {0x41, 0xFF, -1, -1, -1, -1, -1}; | 63 {0x4d, 0x8b, -1, -1, -1, -1, -1, |
| 64 0x4d, 0x8b, 0x5c, 0x24, 0x07, |
| 65 0x49, 0x83, 0xc3, 0x1f, |
| 66 0x41, 0xff, 0xe3}; |
58 return kJumpPattern; | 67 return kJumpPattern; |
59 } | 68 } |
60 | 69 |
61 | 70 |
62 void ShortCallPattern::SetTargetAddress(uword target) const { | 71 void ShortCallPattern::SetTargetAddress(uword target) const { |
63 ASSERT(IsValid()); | 72 ASSERT(IsValid()); |
64 *reinterpret_cast<uint32_t*>(start() + 1) = target - start() - kLengthInBytes; | 73 *reinterpret_cast<uint32_t*>(start() + 1) = target - start() - kLengthInBytes; |
65 CPU::FlushICache(start() + 1, kWordSize); | 74 CPU::FlushICache(start() + 1, kWordSize); |
66 } | 75 } |
67 | 76 |
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86 | 95 |
87 | 96 |
88 const int* SetFramePointerPattern::pattern() const { | 97 const int* SetFramePointerPattern::pattern() const { |
89 static const int kFramePointerPattern[kLengthInBytes] = { 0x48, 0x89, 0xe5 }; | 98 static const int kFramePointerPattern[kLengthInBytes] = { 0x48, 0x89, 0xe5 }; |
90 return kFramePointerPattern; | 99 return kFramePointerPattern; |
91 } | 100 } |
92 | 101 |
93 } // namespace dart | 102 } // namespace dart |
94 | 103 |
95 #endif // defined TARGET_ARCH_X64 | 104 #endif // defined TARGET_ARCH_X64 |
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