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91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
//===--- ImageInspectionStatic.cpp - image inspection for static stdlib ---===//
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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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///
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/// \file
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///
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/// Implementation of ImageInspection for static stdlib (no dynamic loader
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/// present) environments. Assumes that only a single image exists in memory.
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///
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//===----------------------------------------------------------------------===//
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#if defined(__MACH__) && defined(SWIFT_RUNTIME_STATIC_IMAGE_INSPECTION)
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#include "ImageInspection.h"
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#include "ImageInspectionCommon.h"
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extern "C" const char __dso_handle[];
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using namespace swift;
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#define GET_SECTION_START_AND_SIZE(start, size, _seg, _sec) \
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extern void *__s##_seg##_sec __asm("section$start$" _seg "$" _sec); \
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extern void *__e##_seg##_sec __asm("section$end$" _seg "$" _sec); \
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start = &__s##_seg##_sec; \
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size = (char *)&__e##_seg##_sec - (char *)&__s##_seg##_sec;
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void swift::initializeProtocolLookup() {
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void *start;
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uintptr_t size;
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GET_SECTION_START_AND_SIZE(start, size, MachOTextSegment,
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MachOProtocolsSection);
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if (start == nullptr || size == 0)
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return;
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addImageProtocolsBlockCallbackUnsafe(__dso_handle, start, size);
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}
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void swift::initializeProtocolConformanceLookup() {
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void *start;
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uintptr_t size;
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GET_SECTION_START_AND_SIZE(start, size, MachOTextSegment,
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MachOProtocolConformancesSection);
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if (start == nullptr || size == 0)
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return;
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addImageProtocolConformanceBlockCallbackUnsafe(__dso_handle, start, size);
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}
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void swift::initializeTypeMetadataRecordLookup() {
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void *start;
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uintptr_t size;
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GET_SECTION_START_AND_SIZE(start, size, MachOTextSegment,
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MachOTypeMetadataRecordSection);
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if (start == nullptr || size == 0)
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return;
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addImageTypeMetadataRecordBlockCallbackUnsafe(__dso_handle, start, size);
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}
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void swift::initializeDynamicReplacementLookup() {
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void *start1;
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uintptr_t size1;
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GET_SECTION_START_AND_SIZE(start1, size1, MachOTextSegment,
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MachODynamicReplacementSection);
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if (start1 == nullptr || size1 == 0)
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return;
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void *start2;
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uintptr_t size2;
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GET_SECTION_START_AND_SIZE(start2, size2, MachOTextSegment,
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MachODynamicReplacementSection);
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if (start2 == nullptr || size2 == 0)
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return;
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addImageDynamicReplacementBlockCallback(__dso_handle,
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start1, size1, start2, size2);
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}
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void swift::initializeAccessibleFunctionsLookup() {
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void *start;
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uintptr_t size;
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GET_SECTION_START_AND_SIZE(start, size, MachOTextSegment,
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MachOAccessibleFunctionsSection);
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if (start != nullptr && size > 0) {
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addImageAccessibleFunctionsBlockCallbackUnsafe(__dso_handle, start, size);
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}
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}
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#endif // defined(__MACH__) && defined(SWIFT_RUNTIME_STATIC_IMAGE_INSPECTION)
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