Tess Strickland
9a2234461a
Attempting to use the native definition when available causes problems when cross-compiling, and the original attempts to avoid this broke in subtle ways. Instead, just make a non-native definition that mimics the native definition and use that with reinterpret_casts when sending uses of the non-native definition to Windows API calls that expect a value of the native definition. TEST=windows ci Fixes: https://github.com/dart-lang/sdk/issues/60771 Change-Id: I347fcaf8cccd809a3d8e6f041cc7e360b0b8226e Cq-Include-Trybots: luci.dart.try:vm-aot-win-release-arm64-try,vm-aot-win-release-x64-try,vm-win-release-arm64-try,vm-win-release-x64-try,vm-aot-win-debug-arm64-try,vm-aot-win-debug-x64-try,pkg-win-release-try,pkg-win-release-arm64-try,dart-sdk-win-try,dart-sdk-win-arm64-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/430400 Reviewed-by: Slava Egorov <vegorov@google.com>
63 lines
2.1 KiB
C++
63 lines
2.1 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(NEED_WINDOWS_UNWINDING_RECORDS)
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#if defined(TARGET_ARCH_X64)
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const intptr_t kReservedUnwindingRecordsSizeBytes = 64;
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#elif defined(TARGET_ARCH_ARM64)
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const intptr_t kReservedUnwindingRecordsSizeBytes = 4 * KB;
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#else
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#error Unhandled Windows architecture.
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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(NEED_WINDOWS_UNWINDING_RECORDS)
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// Only use these definitions when the ELF loader may be used on 64-bit Windows,
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// as it is the only client of these methods (e.g., _not_ in gen_snapshot).
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#if defined(UNWINDING_RECORDS_WINDOWS_HOST)
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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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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 = RtlAddGrowableFunctionTable(
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pp_dynamic_table,
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/*FunctionTable=*/
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reinterpret_cast<PRUNTIME_FUNCTION>(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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RtlDeleteGrowableFunctionTable(p_dynamic_table);
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}
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#endif // defined(UNWINDING_RECORDS_WINDOWS_HOST)
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} // namespace dart
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