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2 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 2 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
3 // All Rights Reserved. | 3 // All Rights Reserved. |
4 // | 4 // |
5 // Redistribution and use in source and binary forms, with or without | 5 // Redistribution and use in source and binary forms, with or without |
6 // modification, are permitted provided that the following conditions are | 6 // modification, are permitted provided that the following conditions are |
7 // met: | 7 // met: |
8 // | 8 // |
9 // - Redistributions of source code must retain the above copyright notice, | 9 // - Redistributions of source code must retain the above copyright notice, |
10 // this list of conditions and the following disclaimer. | 10 // this list of conditions and the following disclaimer. |
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229 } | 229 } |
230 | 230 |
231 | 231 |
232 Address RelocInfo::target_external_reference() { | 232 Address RelocInfo::target_external_reference() { |
233 DCHECK(rmode_ == EXTERNAL_REFERENCE); | 233 DCHECK(rmode_ == EXTERNAL_REFERENCE); |
234 return Assembler::target_address_at(pc_, host_); | 234 return Assembler::target_address_at(pc_, host_); |
235 } | 235 } |
236 | 236 |
237 | 237 |
238 Address RelocInfo::target_internal_reference() { | 238 Address RelocInfo::target_internal_reference() { |
239 DCHECK(rmode_ == INTERNAL_REFERENCE); | 239 if (rmode_ == INTERNAL_REFERENCE) { |
240 return Memory::Address_at(pc_); | 240 return Memory::Address_at(pc_); |
| 241 } else { |
| 242 DCHECK(rmode_ == INTERNAL_REFERENCE_ENCODED); |
| 243 Instr instr_lui = Assembler::instr_at(pc_ + 0 * Assembler::kInstrSize); |
| 244 Instr instr_ori = Assembler::instr_at(pc_ + 1 * Assembler::kInstrSize); |
| 245 DCHECK(Assembler::IsLui(instr_lui)); |
| 246 DCHECK(Assembler::IsOri(instr_ori)); |
| 247 int32_t imm = (instr_lui & static_cast<int32_t>(kImm16Mask)) << kLuiShift; |
| 248 imm |= (instr_ori & static_cast<int32_t>(kImm16Mask)); |
| 249 return reinterpret_cast<Address>(imm); |
| 250 } |
241 } | 251 } |
242 | 252 |
243 | 253 |
244 void RelocInfo::set_target_internal_reference(Address target) { | 254 void RelocInfo::set_target_internal_reference(Address target) { |
245 DCHECK(rmode_ == INTERNAL_REFERENCE); | 255 if (rmode_ == INTERNAL_REFERENCE) { |
246 Memory::Address_at(pc_) = target; | 256 Memory::Address_at(pc_) = target; |
| 257 } else { |
| 258 // Encoded internal references are lui/ori load of 32-bit abolute address. |
| 259 DCHECK(rmode_ == INTERNAL_REFERENCE_ENCODED); |
| 260 Instr instr_lui = Assembler::instr_at(pc_ + 0 * Assembler::kInstrSize); |
| 261 Instr instr_ori = Assembler::instr_at(pc_ + 1 * Assembler::kInstrSize); |
| 262 DCHECK(Assembler::IsLui(instr_lui)); |
| 263 DCHECK(Assembler::IsOri(instr_ori)); |
| 264 instr_lui &= ~kImm16Mask; |
| 265 instr_ori &= ~kImm16Mask; |
| 266 int32_t imm = reinterpret_cast<int32_t>(target); |
| 267 DCHECK((imm & 3) == 0); |
| 268 Assembler::instr_at_put(pc_ + 0 * Assembler::kInstrSize, |
| 269 instr_lui | ((imm >> kLuiShift) & kImm16Mask)); |
| 270 Assembler::instr_at_put(pc_ + 1 * Assembler::kInstrSize, |
| 271 instr_ori | (imm & kImm16Mask)); |
| 272 // Currently used only by deserializer, and all code will be flushed |
| 273 // after complete deserialization, no need to flush on each reference. |
| 274 } |
247 } | 275 } |
248 | 276 |
249 | 277 |
250 Address RelocInfo::target_runtime_entry(Assembler* origin) { | 278 Address RelocInfo::target_runtime_entry(Assembler* origin) { |
251 DCHECK(IsRuntimeEntry(rmode_)); | 279 DCHECK(IsRuntimeEntry(rmode_)); |
252 return target_address(); | 280 return target_address(); |
253 } | 281 } |
254 | 282 |
255 | 283 |
256 void RelocInfo::set_target_runtime_entry(Address target, | 284 void RelocInfo::set_target_runtime_entry(Address target, |
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458 } | 486 } |
459 *reinterpret_cast<Instr*>(pc_) = x; | 487 *reinterpret_cast<Instr*>(pc_) = x; |
460 pc_ += kInstrSize; | 488 pc_ += kInstrSize; |
461 CheckTrampolinePoolQuick(); | 489 CheckTrampolinePoolQuick(); |
462 } | 490 } |
463 | 491 |
464 | 492 |
465 } } // namespace v8::internal | 493 } } // namespace v8::internal |
466 | 494 |
467 #endif // V8_MIPS_ASSEMBLER_MIPS_INL_H_ | 495 #endif // V8_MIPS_ASSEMBLER_MIPS_INL_H_ |
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