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71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
//===--- SwiftRT-ELF.cpp --------------------------------------------------===//
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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 - 2017 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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#include "ImageInspectionELF.h"
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#include <cstddef>
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// Create empty sections to ensure that the start/stop symbols are synthesized
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// by the linker. Otherwise, we may end up with undefined symbol references as
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// the linker table section was never constructed.
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#define DECLARE_SWIFT_SECTION(name) \
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__asm__("\t.section " #name ",\"a\"\n"); \
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__attribute__((__visibility__("hidden"))) extern const char __start_##name; \
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__attribute__((__visibility__("hidden"))) extern const char __stop_##name;
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extern "C" {
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DECLARE_SWIFT_SECTION(swift4_protocols)
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DECLARE_SWIFT_SECTION(swift4_protocol_conformances)
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DECLARE_SWIFT_SECTION(swift4_type_metadata)
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DECLARE_SWIFT_SECTION(swift4_typeref)
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DECLARE_SWIFT_SECTION(swift4_reflstr)
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DECLARE_SWIFT_SECTION(swift4_fieldmd)
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DECLARE_SWIFT_SECTION(swift4_assocty)
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}
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#undef DECLARE_SWIFT_SECTION
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namespace {
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static swift::MetadataSections sections{};
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}
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__attribute__((__constructor__))
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static void swift_image_constructor() {
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#define SWIFT_SECTION_RANGE(name) \
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{ reinterpret_cast<uintptr_t>(&__start_##name), \
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static_cast<uintptr_t>(&__stop_##name - &__start_##name) }
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sections = {
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swift::CurrentSectionMetadataVersion,
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0,
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nullptr,
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nullptr,
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SWIFT_SECTION_RANGE(swift4_protocols),
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SWIFT_SECTION_RANGE(swift4_protocol_conformances),
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SWIFT_SECTION_RANGE(swift4_type_metadata),
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SWIFT_SECTION_RANGE(swift4_typeref),
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SWIFT_SECTION_RANGE(swift4_reflstr),
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SWIFT_SECTION_RANGE(swift4_fieldmd),
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SWIFT_SECTION_RANGE(swift4_assocty),
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};
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#undef SWIFT_SECTION_RANGE
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swift_addNewDSOImage(§ions);
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}
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