Ryan Macnak
ec77e28f26
Instead of switching over each of the different callback types and duplicating the call-dart-spill-call-runtime-restore in the stub, have the initial runtime call return a function pointer for the runtime call to end that kind of callback. A separate case for tail calls is still needed. TEST=ci Change-Id: I691487ca12337ddef1adaeec4c163c56e2feb09e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/488261 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Alexander Aprelev <aam@google.com>
48 lines
1.6 KiB
C++
48 lines
1.6 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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DLRT_GetFfiCallbackMetadata, // 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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