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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 // 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_ARM | 9 #if V8_TARGET_ARCH_ARM |
| 10 | 10 |
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| 627 return start_page == end_page; | 627 return start_page == end_page; |
| 628 } | 628 } |
| 629 | 629 |
| 630 | 630 |
| 631 void Simulator::set_last_debugger_input(char* input) { | 631 void Simulator::set_last_debugger_input(char* input) { |
| 632 DeleteArray(last_debugger_input_); | 632 DeleteArray(last_debugger_input_); |
| 633 last_debugger_input_ = input; | 633 last_debugger_input_ = input; |
| 634 } | 634 } |
| 635 | 635 |
| 636 | 636 |
| 637 void Simulator::FlushICache(v8::internal::HashMap* i_cache, | 637 void Simulator::FlushICache(base::HashMap* i_cache, |
| 638 void* start_addr, | 638 void* start_addr, |
| 639 size_t size) { | 639 size_t size) { |
| 640 intptr_t start = reinterpret_cast<intptr_t>(start_addr); | 640 intptr_t start = reinterpret_cast<intptr_t>(start_addr); |
| 641 int intra_line = (start & CachePage::kLineMask); | 641 int intra_line = (start & CachePage::kLineMask); |
| 642 start -= intra_line; | 642 start -= intra_line; |
| 643 size += intra_line; | 643 size += intra_line; |
| 644 size = ((size - 1) | CachePage::kLineMask) + 1; | 644 size = ((size - 1) | CachePage::kLineMask) + 1; |
| 645 int offset = (start & CachePage::kPageMask); | 645 int offset = (start & CachePage::kPageMask); |
| 646 while (!AllOnOnePage(start, size - 1)) { | 646 while (!AllOnOnePage(start, size - 1)) { |
| 647 int bytes_to_flush = CachePage::kPageSize - offset; | 647 int bytes_to_flush = CachePage::kPageSize - offset; |
| 648 FlushOnePage(i_cache, start, bytes_to_flush); | 648 FlushOnePage(i_cache, start, bytes_to_flush); |
| 649 start += bytes_to_flush; | 649 start += bytes_to_flush; |
| 650 size -= bytes_to_flush; | 650 size -= bytes_to_flush; |
| 651 DCHECK_EQ(0, start & CachePage::kPageMask); | 651 DCHECK_EQ(0, start & CachePage::kPageMask); |
| 652 offset = 0; | 652 offset = 0; |
| 653 } | 653 } |
| 654 if (size != 0) { | 654 if (size != 0) { |
| 655 FlushOnePage(i_cache, start, size); | 655 FlushOnePage(i_cache, start, size); |
| 656 } | 656 } |
| 657 } | 657 } |
| 658 | 658 |
| 659 | 659 |
| 660 CachePage* Simulator::GetCachePage(v8::internal::HashMap* i_cache, void* page) { | 660 CachePage* Simulator::GetCachePage(base::HashMap* i_cache, void* page) { |
| 661 v8::internal::HashMap::Entry* entry = | 661 base::HashMap::Entry* entry = i_cache->LookupOrInsert(page, ICacheHash(page)); |
| 662 i_cache->LookupOrInsert(page, ICacheHash(page)); | |
| 663 if (entry->value == NULL) { | 662 if (entry->value == NULL) { |
| 664 CachePage* new_page = new CachePage(); | 663 CachePage* new_page = new CachePage(); |
| 665 entry->value = new_page; | 664 entry->value = new_page; |
| 666 } | 665 } |
| 667 return reinterpret_cast<CachePage*>(entry->value); | 666 return reinterpret_cast<CachePage*>(entry->value); |
| 668 } | 667 } |
| 669 | 668 |
| 670 | 669 |
| 671 // Flush from start up to and not including start + size. | 670 // Flush from start up to and not including start + size. |
| 672 void Simulator::FlushOnePage(v8::internal::HashMap* i_cache, | 671 void Simulator::FlushOnePage(base::HashMap* i_cache, |
| 673 intptr_t start, | 672 intptr_t start, |
| 674 int size) { | 673 int size) { |
| 675 DCHECK(size <= CachePage::kPageSize); | 674 DCHECK(size <= CachePage::kPageSize); |
| 676 DCHECK(AllOnOnePage(start, size - 1)); | 675 DCHECK(AllOnOnePage(start, size - 1)); |
| 677 DCHECK((start & CachePage::kLineMask) == 0); | 676 DCHECK((start & CachePage::kLineMask) == 0); |
| 678 DCHECK((size & CachePage::kLineMask) == 0); | 677 DCHECK((size & CachePage::kLineMask) == 0); |
| 679 void* page = reinterpret_cast<void*>(start & (~CachePage::kPageMask)); | 678 void* page = reinterpret_cast<void*>(start & (~CachePage::kPageMask)); |
| 680 int offset = (start & CachePage::kPageMask); | 679 int offset = (start & CachePage::kPageMask); |
| 681 CachePage* cache_page = GetCachePage(i_cache, page); | 680 CachePage* cache_page = GetCachePage(i_cache, page); |
| 682 char* valid_bytemap = cache_page->ValidityByte(offset); | 681 char* valid_bytemap = cache_page->ValidityByte(offset); |
| 683 memset(valid_bytemap, CachePage::LINE_INVALID, size >> CachePage::kLineShift); | 682 memset(valid_bytemap, CachePage::LINE_INVALID, size >> CachePage::kLineShift); |
| 684 } | 683 } |
| 685 | 684 |
| 686 | 685 |
| 687 void Simulator::CheckICache(v8::internal::HashMap* i_cache, | 686 void Simulator::CheckICache(base::HashMap* i_cache, |
| 688 Instruction* instr) { | 687 Instruction* instr) { |
| 689 intptr_t address = reinterpret_cast<intptr_t>(instr); | 688 intptr_t address = reinterpret_cast<intptr_t>(instr); |
| 690 void* page = reinterpret_cast<void*>(address & (~CachePage::kPageMask)); | 689 void* page = reinterpret_cast<void*>(address & (~CachePage::kPageMask)); |
| 691 void* line = reinterpret_cast<void*>(address & (~CachePage::kLineMask)); | 690 void* line = reinterpret_cast<void*>(address & (~CachePage::kLineMask)); |
| 692 int offset = (address & CachePage::kPageMask); | 691 int offset = (address & CachePage::kPageMask); |
| 693 CachePage* cache_page = GetCachePage(i_cache, page); | 692 CachePage* cache_page = GetCachePage(i_cache, page); |
| 694 char* cache_valid_byte = cache_page->ValidityByte(offset); | 693 char* cache_valid_byte = cache_page->ValidityByte(offset); |
| 695 bool cache_hit = (*cache_valid_byte == CachePage::LINE_VALID); | 694 bool cache_hit = (*cache_valid_byte == CachePage::LINE_VALID); |
| 696 char* cached_line = cache_page->CachedData(offset & ~CachePage::kLineMask); | 695 char* cached_line = cache_page->CachedData(offset & ~CachePage::kLineMask); |
| 697 if (cache_hit) { | 696 if (cache_hit) { |
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| 711 if (isolate->simulator_initialized()) return; | 710 if (isolate->simulator_initialized()) return; |
| 712 isolate->set_simulator_initialized(true); | 711 isolate->set_simulator_initialized(true); |
| 713 ::v8::internal::ExternalReference::set_redirector(isolate, | 712 ::v8::internal::ExternalReference::set_redirector(isolate, |
| 714 &RedirectExternalReference); | 713 &RedirectExternalReference); |
| 715 } | 714 } |
| 716 | 715 |
| 717 | 716 |
| 718 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) { | 717 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) { |
| 719 i_cache_ = isolate_->simulator_i_cache(); | 718 i_cache_ = isolate_->simulator_i_cache(); |
| 720 if (i_cache_ == NULL) { | 719 if (i_cache_ == NULL) { |
| 721 i_cache_ = new v8::internal::HashMap(&ICacheMatch); | 720 i_cache_ = new base::HashMap(&ICacheMatch); |
| 722 isolate_->set_simulator_i_cache(i_cache_); | 721 isolate_->set_simulator_i_cache(i_cache_); |
| 723 } | 722 } |
| 724 Initialize(isolate); | 723 Initialize(isolate); |
| 725 // Set up simulator support first. Some of this information is needed to | 724 // Set up simulator support first. Some of this information is needed to |
| 726 // setup the architecture state. | 725 // setup the architecture state. |
| 727 size_t stack_size = 1 * 1024*1024; // allocate 1MB for stack | 726 size_t stack_size = 1 * 1024*1024; // allocate 1MB for stack |
| 728 stack_ = reinterpret_cast<char*>(malloc(stack_size)); | 727 stack_ = reinterpret_cast<char*>(malloc(stack_size)); |
| 729 pc_modified_ = false; | 728 pc_modified_ = false; |
| 730 icount_ = 0; | 729 icount_ = 0; |
| 731 break_pc_ = NULL; | 730 break_pc_ = NULL; |
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| 843 | 842 |
| 844 private: | 843 private: |
| 845 void* external_function_; | 844 void* external_function_; |
| 846 uint32_t swi_instruction_; | 845 uint32_t swi_instruction_; |
| 847 ExternalReference::Type type_; | 846 ExternalReference::Type type_; |
| 848 Redirection* next_; | 847 Redirection* next_; |
| 849 }; | 848 }; |
| 850 | 849 |
| 851 | 850 |
| 852 // static | 851 // static |
| 853 void Simulator::TearDown(HashMap* i_cache, Redirection* first) { | 852 void Simulator::TearDown(base::HashMap* i_cache, Redirection* first) { |
| 854 Redirection::DeleteChain(first); | 853 Redirection::DeleteChain(first); |
| 855 if (i_cache != nullptr) { | 854 if (i_cache != nullptr) { |
| 856 for (HashMap::Entry* entry = i_cache->Start(); entry != nullptr; | 855 for (base::HashMap::Entry* entry = i_cache->Start(); entry != nullptr; |
| 857 entry = i_cache->Next(entry)) { | 856 entry = i_cache->Next(entry)) { |
| 858 delete static_cast<CachePage*>(entry->value); | 857 delete static_cast<CachePage*>(entry->value); |
| 859 } | 858 } |
| 860 delete i_cache; | 859 delete i_cache; |
| 861 } | 860 } |
| 862 } | 861 } |
| 863 | 862 |
| 864 | 863 |
| 865 void* Simulator::RedirectExternalReference(Isolate* isolate, | 864 void* Simulator::RedirectExternalReference(Isolate* isolate, |
| 866 void* external_function, | 865 void* external_function, |
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| 4314 set_register(sp, current_sp + sizeof(uintptr_t)); | 4313 set_register(sp, current_sp + sizeof(uintptr_t)); |
| 4315 return address; | 4314 return address; |
| 4316 } | 4315 } |
| 4317 | 4316 |
| 4318 } // namespace internal | 4317 } // namespace internal |
| 4319 } // namespace v8 | 4318 } // namespace v8 |
| 4320 | 4319 |
| 4321 #endif // USE_SIMULATOR | 4320 #endif // USE_SIMULATOR |
| 4322 | 4321 |
| 4323 #endif // V8_TARGET_ARCH_ARM | 4322 #endif // V8_TARGET_ARCH_ARM |
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