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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 | 4 |
| 5 #ifndef VM_CONSTANTS_X64_H_ | 5 #ifndef VM_CONSTANTS_X64_H_ |
| 6 #define VM_CONSTANTS_X64_H_ | 6 #define VM_CONSTANTS_X64_H_ |
| 7 | 7 |
| 8 namespace dart { | 8 namespace dart { |
| 9 | 9 |
| 10 enum Register { | 10 enum Register { |
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| 92 | 92 |
| 93 // Exception object is passed in this register to the catch handlers when an | 93 // Exception object is passed in this register to the catch handlers when an |
| 94 // exception is thrown. | 94 // exception is thrown. |
| 95 const Register kExceptionObjectReg = RAX; | 95 const Register kExceptionObjectReg = RAX; |
| 96 | 96 |
| 97 // Stack trace object is passed in this register to the catch handlers when | 97 // Stack trace object is passed in this register to the catch handlers when |
| 98 // an exception is thrown. | 98 // an exception is thrown. |
| 99 const Register kStackTraceObjectReg = RDX; | 99 const Register kStackTraceObjectReg = RDX; |
| 100 | 100 |
| 101 | 101 |
| 102 // TODO(regis): Move these constants to stack_frame_x64.h. |
| 102 // Dart stack frame layout. | 103 // Dart stack frame layout. |
| 103 static const int kLastParamSlotIndex = 2; | 104 static const int kLastParamSlotIndex = 2; // From fp. |
| 104 static const int kFirstLocalSlotIndex = -2; | 105 static const int kFirstLocalSlotIndex = -2; // From fp. |
| 106 static const int kPcSlotIndexFromSp = -1; |
| 107 |
| 108 /* X64 Dart Frame Layout |
| 109 |
| 110 | | <- TOS |
| 111 Callee frame | ... | |
| 112 | current ret addr | (PC of current frame) |
| 113 +-------------------+ |
| 114 Current frame | ... | <- RSP of current frame |
| 115 | first local | |
| 116 | PC Marker | (current frame's code entry) |
| 117 | caller's RBP | <- RBP of current frame |
| 118 | caller's ret addr | (PC of caller frame) |
| 119 +-------------------+ |
| 120 Caller frame | last parameter | |
| 121 | ... | |
| 122 */ |
| 105 | 123 |
| 106 | 124 |
| 107 enum ScaleFactor { | 125 enum ScaleFactor { |
| 108 TIMES_1 = 0, | 126 TIMES_1 = 0, |
| 109 TIMES_2 = 1, | 127 TIMES_2 = 1, |
| 110 TIMES_4 = 2, | 128 TIMES_4 = 2, |
| 111 TIMES_8 = 3, | 129 TIMES_8 = 3, |
| 112 TIMES_16 = 4, | 130 TIMES_16 = 4, |
| 113 TIMES_HALF_WORD_SIZE = kWordSizeLog2 - 1 | 131 TIMES_HALF_WORD_SIZE = kWordSizeLog2 - 1 |
| 114 }; | 132 }; |
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| 166 }; | 184 }; |
| 167 | 185 |
| 168 | 186 |
| 169 // The largest multibyte nop we will emit. This could go up to 15 if it | 187 // The largest multibyte nop we will emit. This could go up to 15 if it |
| 170 // becomes important to us. | 188 // becomes important to us. |
| 171 const int MAX_NOP_SIZE = 8; | 189 const int MAX_NOP_SIZE = 8; |
| 172 | 190 |
| 173 } // namespace dart | 191 } // namespace dart |
| 174 | 192 |
| 175 #endif // VM_CONSTANTS_X64_H_ | 193 #endif // VM_CONSTANTS_X64_H_ |
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Chromium Code Reviews
Issue 14812005:
Cleanup deoptimization code to make it architecture independent (in progress). (Closed)
Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/