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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 131 __ Assert(zero, kUnableToEncodeValueAsSmi); | 131 __ Assert(zero, kUnableToEncodeValueAsSmi); |
| 132 } | 132 } |
| 133 __ SmiTag(reg); | 133 __ SmiTag(reg); |
| 134 __ push(reg); | 134 __ push(reg); |
| 135 } | 135 } |
| 136 } | 136 } |
| 137 | 137 |
| 138 #ifdef DEBUG | 138 #ifdef DEBUG |
| 139 __ RecordComment("// Calling from debug break to runtime - come in - over"); | 139 __ RecordComment("// Calling from debug break to runtime - come in - over"); |
| 140 #endif | 140 #endif |
| 141 __ Set(eax, Immediate(0)); // No arguments. | 141 __ Move(eax, Immediate(0)); // No arguments. |
| 142 __ mov(ebx, Immediate(ExternalReference::debug_break(masm->isolate()))); | 142 __ mov(ebx, Immediate(ExternalReference::debug_break(masm->isolate()))); |
| 143 | 143 |
| 144 CEntryStub ceb(1); | 144 CEntryStub ceb(1); |
| 145 __ CallStub(&ceb); | 145 __ CallStub(&ceb); |
| 146 | 146 |
| 147 // Automatically find register that could be used after register restore. | 147 // Automatically find register that could be used after register restore. |
| 148 // We need one register for padding skip instructions. | 148 // We need one register for padding skip instructions. |
| 149 Register unused_reg = { -1 }; | 149 Register unused_reg = { -1 }; |
| 150 | 150 |
| 151 // Restore the register values containing object pointers from the | 151 // Restore the register values containing object pointers from the |
| 152 // expression stack. | 152 // expression stack. |
| 153 for (int i = kNumJSCallerSaved; --i >= 0;) { | 153 for (int i = kNumJSCallerSaved; --i >= 0;) { |
| 154 int r = JSCallerSavedCode(i); | 154 int r = JSCallerSavedCode(i); |
| 155 Register reg = { r }; | 155 Register reg = { r }; |
| 156 if (FLAG_debug_code) { | 156 if (FLAG_debug_code) { |
| 157 __ Set(reg, Immediate(kDebugZapValue)); | 157 __ Move(reg, Immediate(kDebugZapValue)); |
| 158 } | 158 } |
| 159 bool taken = reg.code() == esi.code(); | 159 bool taken = reg.code() == esi.code(); |
| 160 if ((object_regs & (1 << r)) != 0) { | 160 if ((object_regs & (1 << r)) != 0) { |
| 161 __ pop(reg); | 161 __ pop(reg); |
| 162 taken = true; | 162 taken = true; |
| 163 } | 163 } |
| 164 if ((non_object_regs & (1 << r)) != 0) { | 164 if ((non_object_regs & (1 << r)) != 0) { |
| 165 __ pop(reg); | 165 __ pop(reg); |
| 166 __ SmiUntag(reg); | 166 __ SmiUntag(reg); |
| 167 taken = true; | 167 taken = true; |
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| 367 | 367 |
| 368 const bool Debug::kFrameDropperSupported = true; | 368 const bool Debug::kFrameDropperSupported = true; |
| 369 | 369 |
| 370 #undef __ | 370 #undef __ |
| 371 | 371 |
| 372 #endif // ENABLE_DEBUGGER_SUPPORT | 372 #endif // ENABLE_DEBUGGER_SUPPORT |
| 373 | 373 |
| 374 } } // namespace v8::internal | 374 } } // namespace v8::internal |
| 375 | 375 |
| 376 #endif // V8_TARGET_ARCH_IA32 | 376 #endif // V8_TARGET_ARCH_IA32 |
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