| // Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef RUNTIME_VM_BSS_RELOCS_H_ |
| #define RUNTIME_VM_BSS_RELOCS_H_ |
| |
| #include "platform/allocation.h" |
| |
| namespace dart { |
| class Thread; |
| |
| class BSS : public AllStatic { |
| public: |
| // Entries found in both the VM and isolate BSS come first. Each has its own |
| // portion of the BSS segment, so just the indices are shared, not the values |
| // stored at the index. |
| enum class Relocation : intptr_t { |
| DRT_GetFfiCallbackMetadata, // TODO(https://dartbug.com/52579): Remove. |
| DRT_ExitTemporaryIsolate, // TODO(https://dartbug.com/52579): Remove. |
| EndOfVmEntries, |
| |
| // We don't have any isolate group specific entries at the moment. |
| EndOfIsolateGroupEntries = EndOfVmEntries, |
| }; |
| |
| static constexpr intptr_t kVmEntryCount = |
| static_cast<intptr_t>(Relocation::EndOfVmEntries); |
| |
| static constexpr intptr_t kIsolateGroupEntryCount = |
| static_cast<intptr_t>(Relocation::EndOfIsolateGroupEntries); |
| |
| static constexpr intptr_t RelocationIndex(Relocation reloc) { |
| return static_cast<intptr_t>(reloc); |
| } |
| |
| static void Initialize(Thread* current, uword* bss, bool vm); |
| |
| // Currently only used externally by LoadedElf::ResolveSymbols() to set the |
| // relocated address without changing the embedder interface. |
| static void InitializeBSSEntry(BSS::Relocation relocation, |
| uword new_value, |
| uword* bss_start); |
| }; |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_BSS_RELOCS_H_ |