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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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 "src/gdb-jit.h" | 5 #include "src/gdb-jit.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/base/platform/platform.h" | 10 #include "src/base/platform/platform.h" |
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2009 | 2009 |
2010 static uint32_t HashCodeAddress(Address addr) { | 2010 static uint32_t HashCodeAddress(Address addr) { |
2011 static const uintptr_t kGoldenRatio = 2654435761u; | 2011 static const uintptr_t kGoldenRatio = 2654435761u; |
2012 uintptr_t offset = OffsetFrom(addr); | 2012 uintptr_t offset = OffsetFrom(addr); |
2013 return static_cast<uint32_t>((offset >> kCodeAlignmentBits) * kGoldenRatio); | 2013 return static_cast<uint32_t>((offset >> kCodeAlignmentBits) * kGoldenRatio); |
2014 } | 2014 } |
2015 | 2015 |
2016 static base::HashMap* GetLineMap() { | 2016 static base::HashMap* GetLineMap() { |
2017 static base::HashMap* line_map = NULL; | 2017 static base::HashMap* line_map = NULL; |
2018 if (line_map == NULL) { | 2018 if (line_map == NULL) { |
2019 line_map = new base::HashMap(&base::HashMap::PointersMatch); | 2019 line_map = new base::HashMap(); |
2020 } | 2020 } |
2021 return line_map; | 2021 return line_map; |
2022 } | 2022 } |
2023 | 2023 |
2024 | 2024 |
2025 static void PutLineInfo(Address addr, LineInfo* info) { | 2025 static void PutLineInfo(Address addr, LineInfo* info) { |
2026 base::HashMap* line_map = GetLineMap(); | 2026 base::HashMap* line_map = GetLineMap(); |
2027 base::HashMap::Entry* e = | 2027 base::HashMap::Entry* e = |
2028 line_map->LookupOrInsert(addr, HashCodeAddress(addr)); | 2028 line_map->LookupOrInsert(addr, HashCodeAddress(addr)); |
2029 if (e->value != NULL) delete static_cast<LineInfo*>(e->value); | 2029 if (e->value != NULL) delete static_cast<LineInfo*>(e->value); |
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2213 LineInfo* line_info = reinterpret_cast<LineInfo*>(event->user_data); | 2213 LineInfo* line_info = reinterpret_cast<LineInfo*>(event->user_data); |
2214 PutLineInfo(reinterpret_cast<Address>(event->code_start), line_info); | 2214 PutLineInfo(reinterpret_cast<Address>(event->code_start), line_info); |
2215 break; | 2215 break; |
2216 } | 2216 } |
2217 } | 2217 } |
2218 } | 2218 } |
2219 #endif | 2219 #endif |
2220 } // namespace GDBJITInterface | 2220 } // namespace GDBJITInterface |
2221 } // namespace internal | 2221 } // namespace internal |
2222 } // namespace v8 | 2222 } // namespace v8 |
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