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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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158 Memory::Address_at(pc_) = address; | 158 Memory::Address_at(pc_) = address; |
159 if (mode == UPDATE_WRITE_BARRIER && host() != NULL) { | 159 if (mode == UPDATE_WRITE_BARRIER && host() != NULL) { |
160 // TODO(1550) We are passing NULL as a slot because cell can never be on | 160 // TODO(1550) We are passing NULL as a slot because cell can never be on |
161 // evacuation candidate. | 161 // evacuation candidate. |
162 host()->GetHeap()->incremental_marking()->RecordWrite( | 162 host()->GetHeap()->incremental_marking()->RecordWrite( |
163 host(), NULL, cell); | 163 host(), NULL, cell); |
164 } | 164 } |
165 } | 165 } |
166 | 166 |
167 | 167 |
| 168 static const int kNoCodeAgeSequenceLength = 3; |
| 169 |
| 170 Code* RelocInfo::code_age_stub() { |
| 171 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 172 return Code::GetCodeFromTargetAddress( |
| 173 Memory::Address_at(pc_ + Assembler::kInstrSize * |
| 174 (kNoCodeAgeSequenceLength - 1))); |
| 175 } |
| 176 |
| 177 |
| 178 void RelocInfo::set_code_age_stub(Code* stub) { |
| 179 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 180 Memory::Address_at(pc_ + Assembler::kInstrSize * |
| 181 (kNoCodeAgeSequenceLength - 1)) = |
| 182 stub->instruction_start(); |
| 183 } |
| 184 |
| 185 |
168 Address RelocInfo::call_address() { | 186 Address RelocInfo::call_address() { |
169 // The 2 instructions offset assumes patched debug break slot or return | 187 // The 2 instructions offset assumes patched debug break slot or return |
170 // sequence. | 188 // sequence. |
171 ASSERT((IsJSReturn(rmode()) && IsPatchedReturnSequence()) || | 189 ASSERT((IsJSReturn(rmode()) && IsPatchedReturnSequence()) || |
172 (IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence())); | 190 (IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence())); |
173 return Memory::Address_at(pc_ + 2 * Assembler::kInstrSize); | 191 return Memory::Address_at(pc_ + 2 * Assembler::kInstrSize); |
174 } | 192 } |
175 | 193 |
176 | 194 |
177 void RelocInfo::set_call_address(Address target) { | 195 void RelocInfo::set_call_address(Address target) { |
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231 void RelocInfo::Visit(ObjectVisitor* visitor) { | 249 void RelocInfo::Visit(ObjectVisitor* visitor) { |
232 RelocInfo::Mode mode = rmode(); | 250 RelocInfo::Mode mode = rmode(); |
233 if (mode == RelocInfo::EMBEDDED_OBJECT) { | 251 if (mode == RelocInfo::EMBEDDED_OBJECT) { |
234 visitor->VisitEmbeddedPointer(this); | 252 visitor->VisitEmbeddedPointer(this); |
235 } else if (RelocInfo::IsCodeTarget(mode)) { | 253 } else if (RelocInfo::IsCodeTarget(mode)) { |
236 visitor->VisitCodeTarget(this); | 254 visitor->VisitCodeTarget(this); |
237 } else if (mode == RelocInfo::GLOBAL_PROPERTY_CELL) { | 255 } else if (mode == RelocInfo::GLOBAL_PROPERTY_CELL) { |
238 visitor->VisitGlobalPropertyCell(this); | 256 visitor->VisitGlobalPropertyCell(this); |
239 } else if (mode == RelocInfo::EXTERNAL_REFERENCE) { | 257 } else if (mode == RelocInfo::EXTERNAL_REFERENCE) { |
240 visitor->VisitExternalReference(this); | 258 visitor->VisitExternalReference(this); |
| 259 } else if (RelocInfo::IsCodeAgeSequence(mode)) { |
| 260 visitor->VisitCodeAgeSequence(this); |
241 #ifdef ENABLE_DEBUGGER_SUPPORT | 261 #ifdef ENABLE_DEBUGGER_SUPPORT |
242 // TODO(isolates): Get a cached isolate below. | 262 // TODO(isolates): Get a cached isolate below. |
243 } else if (((RelocInfo::IsJSReturn(mode) && | 263 } else if (((RelocInfo::IsJSReturn(mode) && |
244 IsPatchedReturnSequence()) || | 264 IsPatchedReturnSequence()) || |
245 (RelocInfo::IsDebugBreakSlot(mode) && | 265 (RelocInfo::IsDebugBreakSlot(mode) && |
246 IsPatchedDebugBreakSlotSequence())) && | 266 IsPatchedDebugBreakSlotSequence())) && |
247 Isolate::Current()->debug()->has_break_points()) { | 267 Isolate::Current()->debug()->has_break_points()) { |
248 visitor->VisitDebugTarget(this); | 268 visitor->VisitDebugTarget(this); |
249 #endif | 269 #endif |
250 } else if (mode == RelocInfo::RUNTIME_ENTRY) { | 270 } else if (mode == RelocInfo::RUNTIME_ENTRY) { |
251 visitor->VisitRuntimeEntry(this); | 271 visitor->VisitRuntimeEntry(this); |
252 } | 272 } |
253 } | 273 } |
254 | 274 |
255 | 275 |
256 template<typename StaticVisitor> | 276 template<typename StaticVisitor> |
257 void RelocInfo::Visit(Heap* heap) { | 277 void RelocInfo::Visit(Heap* heap) { |
258 RelocInfo::Mode mode = rmode(); | 278 RelocInfo::Mode mode = rmode(); |
259 if (mode == RelocInfo::EMBEDDED_OBJECT) { | 279 if (mode == RelocInfo::EMBEDDED_OBJECT) { |
260 StaticVisitor::VisitEmbeddedPointer(heap, this); | 280 StaticVisitor::VisitEmbeddedPointer(heap, this); |
261 } else if (RelocInfo::IsCodeTarget(mode)) { | 281 } else if (RelocInfo::IsCodeTarget(mode)) { |
262 StaticVisitor::VisitCodeTarget(heap, this); | 282 StaticVisitor::VisitCodeTarget(heap, this); |
263 } else if (mode == RelocInfo::GLOBAL_PROPERTY_CELL) { | 283 } else if (mode == RelocInfo::GLOBAL_PROPERTY_CELL) { |
264 StaticVisitor::VisitGlobalPropertyCell(heap, this); | 284 StaticVisitor::VisitGlobalPropertyCell(heap, this); |
265 } else if (mode == RelocInfo::EXTERNAL_REFERENCE) { | 285 } else if (mode == RelocInfo::EXTERNAL_REFERENCE) { |
266 StaticVisitor::VisitExternalReference(this); | 286 StaticVisitor::VisitExternalReference(this); |
| 287 } else if (RelocInfo::IsCodeAgeSequence(mode)) { |
| 288 StaticVisitor::VisitCodeAgeSequence(heap, this); |
267 #ifdef ENABLE_DEBUGGER_SUPPORT | 289 #ifdef ENABLE_DEBUGGER_SUPPORT |
268 } else if (heap->isolate()->debug()->has_break_points() && | 290 } else if (heap->isolate()->debug()->has_break_points() && |
269 ((RelocInfo::IsJSReturn(mode) && | 291 ((RelocInfo::IsJSReturn(mode) && |
270 IsPatchedReturnSequence()) || | 292 IsPatchedReturnSequence()) || |
271 (RelocInfo::IsDebugBreakSlot(mode) && | 293 (RelocInfo::IsDebugBreakSlot(mode) && |
272 IsPatchedDebugBreakSlotSequence()))) { | 294 IsPatchedDebugBreakSlotSequence()))) { |
273 StaticVisitor::VisitDebugTarget(heap, this); | 295 StaticVisitor::VisitDebugTarget(heap, this); |
274 #endif | 296 #endif |
275 } else if (mode == RelocInfo::RUNTIME_ENTRY) { | 297 } else if (mode == RelocInfo::RUNTIME_ENTRY) { |
276 StaticVisitor::VisitRuntimeEntry(this); | 298 StaticVisitor::VisitRuntimeEntry(this); |
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477 | 499 |
478 | 500 |
479 void Assembler::set_target_address_at(Address pc, Address target) { | 501 void Assembler::set_target_address_at(Address pc, Address target) { |
480 set_target_pointer_at(pc, target); | 502 set_target_pointer_at(pc, target); |
481 } | 503 } |
482 | 504 |
483 | 505 |
484 } } // namespace v8::internal | 506 } } // namespace v8::internal |
485 | 507 |
486 #endif // V8_ARM_ASSEMBLER_ARM_INL_H_ | 508 #endif // V8_ARM_ASSEMBLER_ARM_INL_H_ |
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