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70d1d998ab
[embedded] Add IVarDestroyers into class metadata, add support for throws in initializers
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
//===--- EmbeddedShims.h - shims for embedded Swift -------------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Shims for embedded Swift.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_STDLIB_SHIMS_EMBEDDEDSHIMS_H
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#define SWIFT_STDLIB_SHIMS_EMBEDDEDSHIMS_H
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#include "SwiftStddef.h"
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#include "Visibility.h"
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#if __has_feature(nullability)
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#pragma clang assume_nonnull begin
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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// TODO: __has_feature(swiftasynccc) is just for older clang. Remove this
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// when we no longer support older clang.
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#if __has_extension(swiftcc) || __has_feature(swiftasynccc)
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#define SWIFT_CC_swift __attribute__((swiftcall))
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#define SWIFT_CONTEXT __attribute__((swift_context))
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#define SWIFT_ERROR_RESULT __attribute__((swift_error_result))
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#define SWIFT_INDIRECT_RESULT __attribute__((swift_indirect_result))
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#else
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#define SWIFT_CC_swift
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#define SWIFT_CONTEXT
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#define SWIFT_ERROR_RESULT
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#define SWIFT_INDIRECT_RESULT
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#endif
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typedef void SWIFT_CC_swift (*HeapObjectDestroyer)(SWIFT_CONTEXT void *object);
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typedef struct EmbeddedHeapObject {
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#if __has_feature(ptrauth_calls)
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void * __ptrauth(2, 1, 0x6ae1) metadata;
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#else
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void *metadata;
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#endif
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} EmbeddedHeapObject;
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static inline void
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_swift_embedded_invoke_heap_object_destroy(void *object) {
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void *metadata = ((EmbeddedHeapObject *)object)->metadata;
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void **destroy_location = &((void **)metadata)[1];
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#if __has_feature(ptrauth_calls)
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(*(HeapObjectDestroyer __ptrauth(0, 1, 0xbbbf) *)destroy_location)(object);
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#else
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(*(HeapObjectDestroyer *)destroy_location)(object);
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#endif
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}
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static inline void
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_swift_embedded_invoke_heap_object_optional_ivardestroyer(void *object, void *metadata) {
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void **ivardestroyer_location = &((void **)metadata)[2];
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if (*ivardestroyer_location) {
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#if __has_feature(ptrauth_calls)
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(*(HeapObjectDestroyer __ptrauth(0, 1, 0xbbbf) *)ivardestroyer_location)(object);
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#else
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(*(HeapObjectDestroyer *)ivardestroyer_location)(object);
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#endif
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}
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}
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static inline void *_swift_embedded_get_heap_object_metadata_pointer(void *object) {
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return ((EmbeddedHeapObject *)object)->metadata;
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}
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static inline void _swift_embedded_set_heap_object_metadata_pointer(void *object, void *metadata) {
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((EmbeddedHeapObject *)object)->metadata = metadata;
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#if __has_feature(nullability)
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#pragma clang assume_nonnull end
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#endif
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#endif // SWIFT_STDLIB_SHIMS_EMBEDDEDSHIMS_H
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