Samir Jindel
b032f1b284
Change-Id: I08acf6ef00e899f95dbaf2de36f1aea5e6e7ea3d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/97108 Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Aart Bik <ajcbik@google.com>
61 lines
1.9 KiB
C++
61 lines
1.9 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_COMPILER_FFI_H_
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#define RUNTIME_VM_COMPILER_FFI_H_
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#include <platform/globals.h>
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#include "../class_id.h"
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#include "../object.h"
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#include "../raw_object.h"
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#include "backend/locations.h"
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namespace dart {
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namespace compiler {
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namespace ffi {
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// On all supported platforms, the minimum width an argument must be sign- or
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// zero-extended to is 4 bytes.
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constexpr intptr_t kMinimumArgumentWidth = 4;
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// Storage size for an FFI type (extends 'ffi.NativeType').
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size_t ElementSizeInBytes(intptr_t class_id);
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// Unboxed representation of an FFI type (extends 'ffi.NativeType').
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Representation TypeRepresentation(const AbstractType& result_type);
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// Whether a type which extends 'ffi.NativeType' also extends 'ffi.Pointer'.
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bool NativeTypeIsPointer(const AbstractType& result_type);
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// Whether a type is 'ffi.Void'.
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bool NativeTypeIsVoid(const AbstractType& result_type);
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// Unboxed representation of the result of a C signature function.
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Representation ResultRepresentation(const Function& signature);
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// Location for the result of a C signature function.
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Location ResultLocation(Representation result_rep);
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// Unboxed representations of the arguments to a C signature function.
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ZoneGrowableArray<Representation>* ArgumentRepresentations(
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const Function& signature);
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// Location for the arguments of a C signature function.
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ZoneGrowableArray<Location>* ArgumentLocations(
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const ZoneGrowableArray<Representation>& arg_reps);
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// Number of stack slots used in 'locations'.
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intptr_t NumStackSlots(const ZoneGrowableArray<Location>& locations);
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} // namespace ffi
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} // namespace compiler
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} // namespace dart
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#endif // RUNTIME_VM_COMPILER_FFI_H_
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