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13ec07415b
More details about the design: https://docs.google.com/document/d/1QDjyY_6wOTOgURwpeYMKU9qEz0gKxx2MUrdruC6Kp6c/edit?usp=sharing Change-Id: Ie3985d86dca7f5010044ca46c33ca177588c0f69 Bug: #37022 CoreLibraryReviewExempt: Reviewed by vm and api groups. web and wasm groups not affected because FFI isn't on those platforms. TEST=async_void_function_callbacks_test.dart, ffi_callback_metadata_test.cc, other front end tests Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/305900 Commit-Queue: Liam Appelbe <liama@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_BSS_RELOCS_H_
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#define RUNTIME_VM_BSS_RELOCS_H_
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#include "platform/allocation.h"
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namespace dart {
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class Thread;
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class BSS : public AllStatic {
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public:
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// Entries found in both the VM and isolate BSS come first. Each has its own
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// portion of the BSS segment, so just the indices are shared, not the values
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// stored at the index.
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enum class Relocation : intptr_t {
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InstructionsRelocatedAddress,
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DRT_GetFfiCallbackMetadata, // TODO(https://dartbug.com/52579): Remove.
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DRT_ExitTemporaryIsolate, // TODO(https://dartbug.com/52579): Remove.
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EndOfVmEntries,
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// We don't have any isolate group specific entries at the moment.
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EndOfIsolateGroupEntries = EndOfVmEntries,
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};
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static constexpr intptr_t kVmEntryCount =
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static_cast<intptr_t>(Relocation::EndOfVmEntries);
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static constexpr intptr_t kIsolateGroupEntryCount =
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static_cast<intptr_t>(Relocation::EndOfIsolateGroupEntries);
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static constexpr intptr_t RelocationIndex(Relocation reloc) {
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return static_cast<intptr_t>(reloc);
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}
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static void Initialize(Thread* current, uword* bss, bool vm);
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// Currently only used externally by LoadedElf::ResolveSymbols() to set the
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// relocated address without changing the embedder interface.
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static void InitializeBSSEntry(BSS::Relocation relocation,
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uword new_value,
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uword* bss_start);
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};
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} // namespace dart
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#endif // RUNTIME_VM_BSS_RELOCS_H_
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