Daco Harkes
ba5e72ebe4
TEST=Manually tested in Flutter iOS build. Closes https://github.com/dart-lang/sdk/issues/44230. Change-Id: I47b3bb9eb1fe567e6f14b1c01548b0c0d9b2a683 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/173267 Auto-Submit: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Martin Kustermann <kustermann@google.com>
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
// Copyright (c) 2020, 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 "vm/compiler/ffi/abi.h"
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#include "vm/constants.h"
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namespace dart {
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namespace compiler {
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namespace ffi {
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// See pkg/vm/lib/transformations/ffi.dart, which makes these assumptions.
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struct AbiAlignmentDouble {
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int8_t use_one_byte;
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double d;
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};
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struct AbiAlignmentUint64 {
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int8_t use_one_byte;
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uint64_t i;
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};
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#if defined(HOST_ARCH_X64) || defined(HOST_ARCH_ARM64)
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static_assert(offsetof(AbiAlignmentDouble, d) == 8,
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"FFI transformation alignment");
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static_assert(offsetof(AbiAlignmentUint64, i) == 8,
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"FFI transformation alignment");
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#elif (defined(HOST_ARCH_IA32) && /* NOLINT(whitespace/parens) */ \
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(defined(HOST_OS_LINUX) || defined(HOST_OS_MACOS) || \
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defined(HOST_OS_ANDROID))) || \
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(defined(HOST_ARCH_ARM) && defined(HOST_OS_IOS))
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static_assert(offsetof(AbiAlignmentDouble, d) == 4,
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"FFI transformation alignment");
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static_assert(offsetof(AbiAlignmentUint64, i) == 4,
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"FFI transformation alignment");
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#elif defined(HOST_ARCH_IA32) && defined(HOST_OS_WINDOWS) || \
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defined(HOST_ARCH_ARM)
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static_assert(offsetof(AbiAlignmentDouble, d) == 8,
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"FFI transformation alignment");
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static_assert(offsetof(AbiAlignmentUint64, i) == 8,
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"FFI transformation alignment");
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#else
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#error "Unknown platform. Please add alignment requirements for ABI."
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#endif
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Abi TargetAbi() {
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#if defined(TARGET_ARCH_X64) || defined(TARGET_ARCH_ARM64)
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return Abi::kWordSize64;
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#elif (defined(TARGET_ARCH_IA32) && /* NOLINT(whitespace/parens) */ \
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(defined(TARGET_OS_LINUX) || defined(TARGET_OS_MACOS) || \
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defined(TARGET_OS_ANDROID))) || \
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(defined(TARGET_ARCH_ARM) && defined(TARGET_OS_MACOS_IOS))
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return Abi::kWordSize32Align32;
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#elif defined(TARGET_ARCH_IA32) && defined(TARGET_OS_WINDOWS) || \
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defined(TARGET_ARCH_ARM)
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return Abi::kWordSize32Align64;
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#else
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#error "Unknown platform. Please add alignment requirements for ABI."
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#endif
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}
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} // namespace ffi
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} // namespace compiler
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} // namespace dart
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