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71ffaf392f
TEST=ci Fixes https://github.com/flutter/flutter/issues/141786 Change-Id: I9c6620b8ee25e36631da2b1213002e8bf30b6473 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/347065 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
// Copyright (c) 2023, 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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#include "platform/unwinding_records.h"
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#include "platform/assert.h"
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#include "platform/globals.h"
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namespace dart {
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#if (defined(DART_TARGET_OS_WINDOWS) || defined(DART_HOST_OS_WINDOWS)) && \
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(defined(TARGET_ARCH_X64) || defined(TARGET_ARCH_ARM64))
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#if defined(TARGET_ARCH_X64)
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const intptr_t kReservedUnwindingRecordsSizeBytes = 64;
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#else
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const intptr_t kReservedUnwindingRecordsSizeBytes = 4 * KB;
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#endif
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intptr_t UnwindingRecordsPlatform::SizeInBytes() {
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return kReservedUnwindingRecordsSizeBytes;
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}
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#endif // defined(DART_TARGET_OS_WINDOWS) || defined(DART_HOST_OS_WINDOWS)
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#if defined(DART_HOST_OS_WINDOWS) && \
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(defined(TARGET_ARCH_X64) || defined(TARGET_ARCH_ARM64))
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static HMODULE ntdll_module;
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static decltype(&::RtlAddGrowableFunctionTable)
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add_growable_function_table_func_ = nullptr;
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static decltype(&::RtlDeleteGrowableFunctionTable)
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delete_growable_function_table_func_ = nullptr;
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void* UnwindingRecordsPlatform::GetAddGrowableFunctionTableFunc() {
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return add_growable_function_table_func_;
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}
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void* UnwindingRecordsPlatform::GetDeleteGrowableFunctionTableFunc() {
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return delete_growable_function_table_func_;
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}
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void UnwindingRecordsPlatform::Init() {
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ntdll_module =
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LoadLibraryEx(L"ntdll.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
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ASSERT(ntdll_module != nullptr);
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// This pair of functions is not available on Windows 7.
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add_growable_function_table_func_ =
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reinterpret_cast<decltype(&::RtlAddGrowableFunctionTable)>(
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::GetProcAddress(ntdll_module, "RtlAddGrowableFunctionTable"));
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delete_growable_function_table_func_ =
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reinterpret_cast<decltype(&::RtlDeleteGrowableFunctionTable)>(
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::GetProcAddress(ntdll_module, "RtlDeleteGrowableFunctionTable"));
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// Either both available, or both not available.
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ASSERT((add_growable_function_table_func_ == nullptr) ==
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(delete_growable_function_table_func_ == nullptr));
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}
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void UnwindingRecordsPlatform::Cleanup() {
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FreeLibrary(ntdll_module);
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}
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void UnwindingRecordsPlatform::RegisterExecutableMemory(
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void* start,
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intptr_t size,
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void** pp_dynamic_table) {
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auto func = add_growable_function_table_func_;
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if (func == nullptr) {
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return;
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}
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intptr_t unwinding_record_offset = size - kReservedUnwindingRecordsSizeBytes;
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uint8_t* record_ptr = static_cast<uint8_t*>(start) + unwinding_record_offset;
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CodeRangeUnwindingRecord* record =
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reinterpret_cast<CodeRangeUnwindingRecord*>(record_ptr);
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RELEASE_ASSERT(record->magic == kUnwindingRecordMagic);
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uword start_num = reinterpret_cast<intptr_t>(start);
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uword end_num = start_num + size;
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DWORD status = func(pp_dynamic_table,
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/*FunctionTable=*/record->runtime_function,
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/*EntryCount=*/record->runtime_function_count,
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/*MaximumEntryCount=*/record->runtime_function_count,
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/*RangeBase=*/start_num,
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/*RangeEnd=*/end_num);
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if (status != 0) {
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FATAL("Failed to add growable function table: 0x%x\n", status);
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}
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}
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void UnwindingRecordsPlatform::UnregisterDynamicTable(void* p_dynamic_table) {
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auto func = delete_growable_function_table_func_;
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if (func == nullptr) return;
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func(p_dynamic_table);
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}
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#endif // defined(DART_HOST_OS_WINDOWS)
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} // namespace dart
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