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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <stdarg.h> | 5 #include <stdarg.h> |
6 #include <stdlib.h> | 6 #include <stdlib.h> |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #if V8_TARGET_ARCH_PPC | 9 #if V8_TARGET_ARCH_PPC |
10 | 10 |
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700 return start_page == end_page; | 700 return start_page == end_page; |
701 } | 701 } |
702 | 702 |
703 | 703 |
704 void Simulator::set_last_debugger_input(char* input) { | 704 void Simulator::set_last_debugger_input(char* input) { |
705 DeleteArray(last_debugger_input_); | 705 DeleteArray(last_debugger_input_); |
706 last_debugger_input_ = input; | 706 last_debugger_input_ = input; |
707 } | 707 } |
708 | 708 |
709 | 709 |
710 void Simulator::FlushICache(v8::internal::HashMap* i_cache, void* start_addr, | 710 void Simulator::FlushICache(base::HashMap* i_cache, void* start_addr, |
711 size_t size) { | 711 size_t size) { |
712 intptr_t start = reinterpret_cast<intptr_t>(start_addr); | 712 intptr_t start = reinterpret_cast<intptr_t>(start_addr); |
713 int intra_line = (start & CachePage::kLineMask); | 713 int intra_line = (start & CachePage::kLineMask); |
714 start -= intra_line; | 714 start -= intra_line; |
715 size += intra_line; | 715 size += intra_line; |
716 size = ((size - 1) | CachePage::kLineMask) + 1; | 716 size = ((size - 1) | CachePage::kLineMask) + 1; |
717 int offset = (start & CachePage::kPageMask); | 717 int offset = (start & CachePage::kPageMask); |
718 while (!AllOnOnePage(start, size - 1)) { | 718 while (!AllOnOnePage(start, size - 1)) { |
719 int bytes_to_flush = CachePage::kPageSize - offset; | 719 int bytes_to_flush = CachePage::kPageSize - offset; |
720 FlushOnePage(i_cache, start, bytes_to_flush); | 720 FlushOnePage(i_cache, start, bytes_to_flush); |
721 start += bytes_to_flush; | 721 start += bytes_to_flush; |
722 size -= bytes_to_flush; | 722 size -= bytes_to_flush; |
723 DCHECK_EQ(0, static_cast<int>(start & CachePage::kPageMask)); | 723 DCHECK_EQ(0, static_cast<int>(start & CachePage::kPageMask)); |
724 offset = 0; | 724 offset = 0; |
725 } | 725 } |
726 if (size != 0) { | 726 if (size != 0) { |
727 FlushOnePage(i_cache, start, size); | 727 FlushOnePage(i_cache, start, size); |
728 } | 728 } |
729 } | 729 } |
730 | 730 |
731 | 731 |
732 CachePage* Simulator::GetCachePage(v8::internal::HashMap* i_cache, void* page) { | 732 CachePage* Simulator::GetCachePage(base::HashMap* i_cache, void* page) { |
733 v8::internal::HashMap::Entry* entry = | 733 base::HashMap::Entry* entry = i_cache->LookupOrInsert(page, ICacheHash(page)); |
734 i_cache->LookupOrInsert(page, ICacheHash(page)); | |
735 if (entry->value == NULL) { | 734 if (entry->value == NULL) { |
736 CachePage* new_page = new CachePage(); | 735 CachePage* new_page = new CachePage(); |
737 entry->value = new_page; | 736 entry->value = new_page; |
738 } | 737 } |
739 return reinterpret_cast<CachePage*>(entry->value); | 738 return reinterpret_cast<CachePage*>(entry->value); |
740 } | 739 } |
741 | 740 |
742 | 741 |
743 // Flush from start up to and not including start + size. | 742 // Flush from start up to and not including start + size. |
744 void Simulator::FlushOnePage(v8::internal::HashMap* i_cache, intptr_t start, | 743 void Simulator::FlushOnePage(base::HashMap* i_cache, intptr_t start, int size) { |
745 int size) { | |
746 DCHECK(size <= CachePage::kPageSize); | 744 DCHECK(size <= CachePage::kPageSize); |
747 DCHECK(AllOnOnePage(start, size - 1)); | 745 DCHECK(AllOnOnePage(start, size - 1)); |
748 DCHECK((start & CachePage::kLineMask) == 0); | 746 DCHECK((start & CachePage::kLineMask) == 0); |
749 DCHECK((size & CachePage::kLineMask) == 0); | 747 DCHECK((size & CachePage::kLineMask) == 0); |
750 void* page = reinterpret_cast<void*>(start & (~CachePage::kPageMask)); | 748 void* page = reinterpret_cast<void*>(start & (~CachePage::kPageMask)); |
751 int offset = (start & CachePage::kPageMask); | 749 int offset = (start & CachePage::kPageMask); |
752 CachePage* cache_page = GetCachePage(i_cache, page); | 750 CachePage* cache_page = GetCachePage(i_cache, page); |
753 char* valid_bytemap = cache_page->ValidityByte(offset); | 751 char* valid_bytemap = cache_page->ValidityByte(offset); |
754 memset(valid_bytemap, CachePage::LINE_INVALID, size >> CachePage::kLineShift); | 752 memset(valid_bytemap, CachePage::LINE_INVALID, size >> CachePage::kLineShift); |
755 } | 753 } |
756 | 754 |
757 | 755 void Simulator::CheckICache(base::HashMap* i_cache, Instruction* instr) { |
758 void Simulator::CheckICache(v8::internal::HashMap* i_cache, | |
759 Instruction* instr) { | |
760 intptr_t address = reinterpret_cast<intptr_t>(instr); | 756 intptr_t address = reinterpret_cast<intptr_t>(instr); |
761 void* page = reinterpret_cast<void*>(address & (~CachePage::kPageMask)); | 757 void* page = reinterpret_cast<void*>(address & (~CachePage::kPageMask)); |
762 void* line = reinterpret_cast<void*>(address & (~CachePage::kLineMask)); | 758 void* line = reinterpret_cast<void*>(address & (~CachePage::kLineMask)); |
763 int offset = (address & CachePage::kPageMask); | 759 int offset = (address & CachePage::kPageMask); |
764 CachePage* cache_page = GetCachePage(i_cache, page); | 760 CachePage* cache_page = GetCachePage(i_cache, page); |
765 char* cache_valid_byte = cache_page->ValidityByte(offset); | 761 char* cache_valid_byte = cache_page->ValidityByte(offset); |
766 bool cache_hit = (*cache_valid_byte == CachePage::LINE_VALID); | 762 bool cache_hit = (*cache_valid_byte == CachePage::LINE_VALID); |
767 char* cached_line = cache_page->CachedData(offset & ~CachePage::kLineMask); | 763 char* cached_line = cache_page->CachedData(offset & ~CachePage::kLineMask); |
768 if (cache_hit) { | 764 if (cache_hit) { |
769 // Check that the data in memory matches the contents of the I-cache. | 765 // Check that the data in memory matches the contents of the I-cache. |
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782 if (isolate->simulator_initialized()) return; | 778 if (isolate->simulator_initialized()) return; |
783 isolate->set_simulator_initialized(true); | 779 isolate->set_simulator_initialized(true); |
784 ::v8::internal::ExternalReference::set_redirector(isolate, | 780 ::v8::internal::ExternalReference::set_redirector(isolate, |
785 &RedirectExternalReference); | 781 &RedirectExternalReference); |
786 } | 782 } |
787 | 783 |
788 | 784 |
789 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) { | 785 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) { |
790 i_cache_ = isolate_->simulator_i_cache(); | 786 i_cache_ = isolate_->simulator_i_cache(); |
791 if (i_cache_ == NULL) { | 787 if (i_cache_ == NULL) { |
792 i_cache_ = new v8::internal::HashMap(&ICacheMatch); | 788 i_cache_ = new base::HashMap(&ICacheMatch); |
793 isolate_->set_simulator_i_cache(i_cache_); | 789 isolate_->set_simulator_i_cache(i_cache_); |
794 } | 790 } |
795 Initialize(isolate); | 791 Initialize(isolate); |
796 // Set up simulator support first. Some of this information is needed to | 792 // Set up simulator support first. Some of this information is needed to |
797 // setup the architecture state. | 793 // setup the architecture state. |
798 #if V8_TARGET_ARCH_PPC64 | 794 #if V8_TARGET_ARCH_PPC64 |
799 size_t stack_size = FLAG_sim_stack_size * KB; | 795 size_t stack_size = FLAG_sim_stack_size * KB; |
800 #else | 796 #else |
801 size_t stack_size = MB; // allocate 1MB for stack | 797 size_t stack_size = MB; // allocate 1MB for stack |
802 #endif | 798 #endif |
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918 private: | 914 private: |
919 void* external_function_; | 915 void* external_function_; |
920 uint32_t swi_instruction_; | 916 uint32_t swi_instruction_; |
921 ExternalReference::Type type_; | 917 ExternalReference::Type type_; |
922 Redirection* next_; | 918 Redirection* next_; |
923 intptr_t function_descriptor_[3]; | 919 intptr_t function_descriptor_[3]; |
924 }; | 920 }; |
925 | 921 |
926 | 922 |
927 // static | 923 // static |
928 void Simulator::TearDown(HashMap* i_cache, Redirection* first) { | 924 void Simulator::TearDown(base::HashMap* i_cache, Redirection* first) { |
929 Redirection::DeleteChain(first); | 925 Redirection::DeleteChain(first); |
930 if (i_cache != nullptr) { | 926 if (i_cache != nullptr) { |
931 for (HashMap::Entry* entry = i_cache->Start(); entry != nullptr; | 927 for (base::HashMap::Entry* entry = i_cache->Start(); entry != nullptr; |
932 entry = i_cache->Next(entry)) { | 928 entry = i_cache->Next(entry)) { |
933 delete static_cast<CachePage*>(entry->value); | 929 delete static_cast<CachePage*>(entry->value); |
934 } | 930 } |
935 delete i_cache; | 931 delete i_cache; |
936 } | 932 } |
937 } | 933 } |
938 | 934 |
939 | 935 |
940 void* Simulator::RedirectExternalReference(Isolate* isolate, | 936 void* Simulator::RedirectExternalReference(Isolate* isolate, |
941 void* external_function, | 937 void* external_function, |
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4132 uintptr_t* stack_slot = reinterpret_cast<uintptr_t*>(current_sp); | 4128 uintptr_t* stack_slot = reinterpret_cast<uintptr_t*>(current_sp); |
4133 uintptr_t address = *stack_slot; | 4129 uintptr_t address = *stack_slot; |
4134 set_register(sp, current_sp + sizeof(uintptr_t)); | 4130 set_register(sp, current_sp + sizeof(uintptr_t)); |
4135 return address; | 4131 return address; |
4136 } | 4132 } |
4137 } // namespace internal | 4133 } // namespace internal |
4138 } // namespace v8 | 4134 } // namespace v8 |
4139 | 4135 |
4140 #endif // USE_SIMULATOR | 4136 #endif // USE_SIMULATOR |
4141 #endif // V8_TARGET_ARCH_PPC | 4137 #endif // V8_TARGET_ARCH_PPC |
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