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// 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.
#include "platform/allocation.h"
namespace dart {
class Thread;
class BSS : public AllStatic {
// 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 {
// End of shared entries.
// End of isolate-only entries.
static constexpr intptr_t kVmEntryCount =
static_cast<intptr_t>(Relocation::InstructionsRelocatedAddress) + 1;
static constexpr intptr_t kIsolateEntryCount =
static_cast<intptr_t>(Relocation::DRT_GetThreadForNativeCallback) + 1;
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