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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // | 2 // |
| 3 // Redistribution and use in source and binary forms, with or without | 3 // Redistribution and use in source and binary forms, with or without |
| 4 // modification, are permitted provided that the following conditions are | 4 // modification, are permitted provided that the following conditions are |
| 5 // met: | 5 // met: |
| 6 // | 6 // |
| 7 // * Redistributions of source code must retain the above copyright | 7 // * Redistributions of source code must retain the above copyright |
| 8 // notice, this list of conditions and the following disclaimer. | 8 // notice, this list of conditions and the following disclaimer. |
| 9 // * Redistributions in binary form must reproduce the above | 9 // * Redistributions in binary form must reproduce the above |
| 10 // copyright notice, this list of conditions and the following | 10 // copyright notice, this list of conditions and the following |
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| 304 | 304 |
| 305 | 305 |
| 306 // Constant Pool. | 306 // Constant Pool. |
| 307 void ConstPool::RecordEntry(intptr_t data, | 307 void ConstPool::RecordEntry(intptr_t data, |
| 308 RelocInfo::Mode mode) { | 308 RelocInfo::Mode mode) { |
| 309 DCHECK(mode != RelocInfo::COMMENT && | 309 DCHECK(mode != RelocInfo::COMMENT && |
| 310 mode != RelocInfo::POSITION && | 310 mode != RelocInfo::POSITION && |
| 311 mode != RelocInfo::STATEMENT_POSITION && | 311 mode != RelocInfo::STATEMENT_POSITION && |
| 312 mode != RelocInfo::CONST_POOL && | 312 mode != RelocInfo::CONST_POOL && |
| 313 mode != RelocInfo::VENEER_POOL && | 313 mode != RelocInfo::VENEER_POOL && |
| 314 mode != RelocInfo::CODE_AGE_SEQUENCE); | 314 mode != RelocInfo::CODE_AGE_SEQUENCE && |
| 315 | 315 mode != RelocInfo::DEOPT_REASON); |
| 316 uint64_t raw_data = static_cast<uint64_t>(data); | 316 uint64_t raw_data = static_cast<uint64_t>(data); |
| 317 int offset = assm_->pc_offset(); | 317 int offset = assm_->pc_offset(); |
| 318 if (IsEmpty()) { | 318 if (IsEmpty()) { |
| 319 first_use_ = offset; | 319 first_use_ = offset; |
| 320 } | 320 } |
| 321 | 321 |
| 322 std::pair<uint64_t, int> entry = std::make_pair(raw_data, offset); | 322 std::pair<uint64_t, int> entry = std::make_pair(raw_data, offset); |
| 323 if (CanBeShared(mode)) { | 323 if (CanBeShared(mode)) { |
| 324 shared_entries_.insert(entry); | 324 shared_entries_.insert(entry); |
| 325 if (shared_entries_.count(entry.first) == 1) { | 325 if (shared_entries_.count(entry.first) == 1) { |
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| 2841 // Pending relocation entries are also relative, no need to relocate. | 2841 // Pending relocation entries are also relative, no need to relocate. |
| 2842 } | 2842 } |
| 2843 | 2843 |
| 2844 | 2844 |
| 2845 void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) { | 2845 void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) { |
| 2846 // We do not try to reuse pool constants. | 2846 // We do not try to reuse pool constants. |
| 2847 RelocInfo rinfo(reinterpret_cast<byte*>(pc_), rmode, data, NULL); | 2847 RelocInfo rinfo(reinterpret_cast<byte*>(pc_), rmode, data, NULL); |
| 2848 if (((rmode >= RelocInfo::JS_RETURN) && | 2848 if (((rmode >= RelocInfo::JS_RETURN) && |
| 2849 (rmode <= RelocInfo::DEBUG_BREAK_SLOT)) || | 2849 (rmode <= RelocInfo::DEBUG_BREAK_SLOT)) || |
| 2850 (rmode == RelocInfo::CONST_POOL) || | 2850 (rmode == RelocInfo::CONST_POOL) || |
| 2851 (rmode == RelocInfo::VENEER_POOL)) { | 2851 (rmode == RelocInfo::VENEER_POOL) || |
| 2852 (rmode == RelocInfo::DEOPT_REASON)) { |
| 2852 // Adjust code for new modes. | 2853 // Adjust code for new modes. |
| 2853 DCHECK(RelocInfo::IsDebugBreakSlot(rmode) | 2854 DCHECK(RelocInfo::IsDebugBreakSlot(rmode) |
| 2854 || RelocInfo::IsJSReturn(rmode) | 2855 || RelocInfo::IsJSReturn(rmode) |
| 2855 || RelocInfo::IsComment(rmode) | 2856 || RelocInfo::IsComment(rmode) |
| 2857 || RelocInfo::IsDeoptReason(rmode) |
| 2856 || RelocInfo::IsPosition(rmode) | 2858 || RelocInfo::IsPosition(rmode) |
| 2857 || RelocInfo::IsConstPool(rmode) | 2859 || RelocInfo::IsConstPool(rmode) |
| 2858 || RelocInfo::IsVeneerPool(rmode)); | 2860 || RelocInfo::IsVeneerPool(rmode)); |
| 2859 // These modes do not need an entry in the constant pool. | 2861 // These modes do not need an entry in the constant pool. |
| 2860 } else { | 2862 } else { |
| 2861 constpool_.RecordEntry(data, rmode); | 2863 constpool_.RecordEntry(data, rmode); |
| 2862 // Make sure the constant pool is not emitted in place of the next | 2864 // Make sure the constant pool is not emitted in place of the next |
| 2863 // instruction for which we just recorded relocation info. | 2865 // instruction for which we just recorded relocation info. |
| 2864 BlockConstPoolFor(1); | 2866 BlockConstPoolFor(1); |
| 2865 } | 2867 } |
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| 3155 movz(scratch, (target_offset >> 16) & 0xFFFF, 16); | 3157 movz(scratch, (target_offset >> 16) & 0xFFFF, 16); |
| 3156 movk(scratch, (target_offset >> 32) & 0xFFFF, 32); | 3158 movk(scratch, (target_offset >> 32) & 0xFFFF, 32); |
| 3157 DCHECK((target_offset >> 48) == 0); | 3159 DCHECK((target_offset >> 48) == 0); |
| 3158 add(rd, rd, scratch); | 3160 add(rd, rd, scratch); |
| 3159 } | 3161 } |
| 3160 | 3162 |
| 3161 | 3163 |
| 3162 } } // namespace v8::internal | 3164 } } // namespace v8::internal |
| 3163 | 3165 |
| 3164 #endif // V8_TARGET_ARCH_ARM64 | 3166 #endif // V8_TARGET_ARCH_ARM64 |
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