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--- /dev/null
+++ dyld/dyld-655.1/dyld3/APIs_macOS.cpp
@@ -0,0 +1,607 @@
+/*
+ * Copyright (c) 2017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <_simple.h>
+#include <sys/errno.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <TargetConditionals.h>
+#include <malloc/malloc.h>
+
+#include <algorithm>
+
+#include "dlfcn.h"
+#include "dyld_priv.h"
+
+#include "AllImages.h"
+#include "Loading.h"
+#include "Logging.h"
+#include "Diagnostics.h"
+#include "DyldSharedCache.h"
+#include "APIs.h"
+
+
+namespace dyld3 {
+
+// from APIs.cpp
+void parseDlHandle(void* h, const MachOLoaded** mh, bool* dontContinue);
+
+
+// only in macOS and deprecated
+#if __MAC_OS_X_VERSION_MIN_REQUIRED
+
+// macOS needs to support an old API that only works with fileype==MH_BUNDLE.
+// In this deprecated API (unlike dlopen), loading and linking are separate steps.
+// NSCreateObjectFileImageFrom*() just maps in the bundle mach-o file.
+// NSLinkModule() does the load of dependent modules and rebasing/binding.
+// To unload one of these, you must call NSUnLinkModule() and NSDestroyObjectFileImage() in any order!
+//
+
+NSObjectFileImageReturnCode NSCreateObjectFileImageFromFile(const char* path, NSObjectFileImage* ofi)
+{
+ log_apis("NSCreateObjectFileImageFromFile(\"%s\", %p)\n", path, ofi);
+
+ // verify path exists
+ struct stat statbuf;
+ if ( ::stat(path, &statbuf) == -1 )
+ return NSObjectFileImageFailure;
+
+ // create ofi that just contains path. NSLinkModule does all the work
+ OFIInfo result;
+ result.path = strdup(path);
+ result.memSource = nullptr;
+ result.memLength = 0;
+ result.loadAddress = nullptr;
+ result.imageNum = 0;
+ *ofi = gAllImages.addNSObjectFileImage(result);
+
+ log_apis("NSCreateObjectFileImageFromFile() => %p\n", *ofi);
+
+ return NSObjectFileImageSuccess;
+}
+
+NSObjectFileImageReturnCode NSCreateObjectFileImageFromMemory(const void* memImage, size_t memImageSize, NSObjectFileImage *ofi)
+{
+ log_apis("NSCreateObjectFileImageFromMemory(%p, 0x%0lX, %p)\n", memImage, memImageSize, ofi);
+
+ // sanity check the buffer is a mach-o file
+ __block Diagnostics diag;
+
+ // check if it is current arch mach-o or fat with slice for current arch
+ bool usable = false;
+ const MachOFile* mf = (MachOFile*)memImage;
+ if ( mf->hasMachOMagic() && mf->isMachO(diag, memImageSize) ) {
+ if ( strcmp(mf->archName(), MachOFile::currentArchName()) == 0 )
+ usable = true;
+#if __x86_64__
+ // <rdar://problem/42727628> support thin x86_64 on haswell machines
+ else if ( (strcmp(MachOFile::currentArchName(), "x86_64h") == 0) && (strcmp(mf->archName(), "x86_64") == 0) )
+ usable = true;
+#endif
+ }
+ else if ( const FatFile* ff = FatFile::isFatFile(memImage) ) {
+ uint64_t sliceOffset;
+ uint64_t sliceLen;
+ bool missingSlice;
+ if ( ff->isFatFileWithSlice(diag, memImageSize, MachOFile::currentArchName(), sliceOffset, sliceLen, missingSlice) ) {
+ mf = (MachOFile*)((long)memImage+sliceOffset);
+ if ( mf->isMachO(diag, sliceLen) ) {
+ usable = true;
+ }
+ }
+ }
+ if ( usable ) {
+ if ( !mf->supportsPlatform(Platform::macOS) )
+ usable = false;
+ }
+ if ( !usable ) {
+ log_apis("NSCreateObjectFileImageFromMemory() not mach-o\n");
+ return NSObjectFileImageFailure;
+ }
+
+ // this API can only be used with bundles
+ if ( !mf->isBundle() ) {
+ log_apis("NSCreateObjectFileImageFromMemory() not a bundle\n");
+ return NSObjectFileImageInappropriateFile;
+ }
+
+ // allocate ofi that just lists the memory range
+ OFIInfo result;
+ result.path = nullptr;
+ result.memSource = memImage;
+ result.memLength = memImageSize;
+ result.loadAddress = nullptr;
+ result.imageNum = 0;
+ *ofi = gAllImages.addNSObjectFileImage(result);
+
+ log_apis("NSCreateObjectFileImageFromMemory() => %p\n", *ofi);
+
+ return NSObjectFileImageSuccess;
+}
+
+NSModule NSLinkModule(NSObjectFileImage ofi, const char* moduleName, uint32_t options)
+{
+ DYLD_LOAD_LOCK_THIS_BLOCK
+ log_apis("NSLinkModule(%p, \"%s\", 0x%08X)\n", ofi, moduleName, options);
+
+ __block const char* path = nullptr;
+ bool foundImage = gAllImages.forNSObjectFileImage(ofi, ^(OFIInfo &image) {
+ // if this is memory based image, write to temp file, then use file based loading
+ if ( image.memSource != nullptr ) {
+ // make temp file with content of memory buffer
+ bool successfullyWritten = false;
+ image.path = ::tempnam(nullptr, "NSCreateObjectFileImageFromMemory-");
+ if ( image.path != nullptr ) {
+ int fd = ::open(image.path, O_WRONLY | O_CREAT | O_EXCL, 0644);
+ if ( fd != -1 ) {
+ ssize_t writtenSize = ::pwrite(fd, image.memSource, image.memLength, 0);
+ if ( writtenSize == image.memLength )
+ successfullyWritten = true;
+ ::close(fd);
+ }
+ }
+ if ( !successfullyWritten ) {
+ if ( image.path != nullptr ) {
+ free((void*)image.path);
+ image.path = nullptr;
+ }
+ log_apis("NSLinkModule() => NULL (could not save memory image to temp file)\n");
+ return;
+ }
+ }
+ path = image.path;
+ });
+
+ if (!foundImage) {
+ // ofi is invalid if not in list
+ log_apis("NSLinkModule() => NULL (invalid NSObjectFileImage)\n");
+ return nullptr;
+ }
+
+ if (!path)
+ return nullptr;
+
+ // dlopen the binary outside of the read lock as we don't want to risk deadlock
+ Diagnostics diag;
+ void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
+ const MachOLoaded* loadAddress = gAllImages.dlopen(diag, path, false, false, false, true, callerAddress);
+ if ( diag.hasError() ) {
+ log_apis(" NSLinkModule: failed: %s\n", diag.errorMessage());
+ return nullptr;
+ }
+
+ // Now update the load address of this object
+ gAllImages.forNSObjectFileImage(ofi, ^(OFIInfo &image) {
+ image.loadAddress = loadAddress;
+
+ // if memory based load, delete temp file
+ if ( image.memSource != nullptr ) {
+ log_apis(" NSLinkModule: delete temp file: %s\n", image.path);
+ ::unlink(image.path);
+ }
+ });
+
+ log_apis("NSLinkModule() => %p\n", loadAddress);
+ return (NSModule)loadAddress;
+}
+
+// NSUnLinkModule unmaps the image, but does not release the NSObjectFileImage
+bool NSUnLinkModule(NSModule module, uint32_t options)
+{
+ DYLD_LOAD_LOCK_THIS_BLOCK
+ log_apis("NSUnLinkModule(%p, 0x%08X)\n", module, options);
+
+ __block const mach_header* mh = nullptr;
+ gAllImages.infoForImageMappedAt(module, ^(const LoadedImage& foundImage, uint8_t permissions) {
+ mh = foundImage.loadedAddress();
+ });
+
+ if ( mh != nullptr )
+ gAllImages.decRefCount(mh); // removes image if reference count went to zero
+
+ log_apis("NSUnLinkModule() => %d\n", mh != nullptr);
+
+ return mh != nullptr;
+}
+
+// NSDestroyObjectFileImage releases the NSObjectFileImage, but the mapped image may remain in use
+bool NSDestroyObjectFileImage(NSObjectFileImage imageHandle)
+{
+ log_apis("NSDestroyObjectFileImage(%p)\n", imageHandle);
+
+ __block const void* memSource = nullptr;
+ __block size_t memLength = 0;
+ __block const char* path = nullptr;
+ bool foundImage = gAllImages.forNSObjectFileImage(imageHandle, ^(OFIInfo &image) {
+ // keep copy of info
+ memSource = image.memSource;
+ memLength = image.memLength;
+ path = image.path;
+ });
+
+ if (!foundImage)
+ return false;
+
+ // remove from list
+ gAllImages.removeNSObjectFileImage(imageHandle);
+
+ // if object was created from a memory, release that memory
+ // NOTE: this is the way dyld has always done this. NSCreateObjectFileImageFromMemory() hands ownership of the memory to dyld
+ if ( memSource != nullptr ) {
+ // we don't know if memory came from malloc or vm_allocate, so ask malloc
+ if ( malloc_size(memSource) != 0 )
+ free((void*)(memSource));
+ else
+ vm_deallocate(mach_task_self(), (vm_address_t)memSource, memLength);
+ }
+ free((void*)path);
+
+ return true;
+}
+
+uint32_t NSSymbolDefinitionCountInObjectFileImage(NSObjectFileImage objectFileImage)
+{
+ halt("NSSymbolDefinitionCountInObjectFileImage() is obsolete");
+}
+
+const char* NSSymbolDefinitionNameInObjectFileImage(NSObjectFileImage objectFileImage, uint32_t ordinal)
+{
+ halt("NSSymbolDefinitionNameInObjectFileImage() is obsolete");
+}
+
+uint32_t NSSymbolReferenceCountInObjectFileImage(NSObjectFileImage objectFileImage)
+{
+ halt("NSSymbolReferenceCountInObjectFileImage() is obsolete");
+}
+
+const char* NSSymbolReferenceNameInObjectFileImage(NSObjectFileImage objectFileImage, uint32_t ordinal, bool *tentative_definition)
+{
+ halt("NSSymbolReferenceNameInObjectFileImage() is obsolete");
+}
+
+bool NSIsSymbolDefinedInObjectFileImage(NSObjectFileImage imageHandle, const char* symbolName)
+{
+ log_apis("NSIsSymbolDefinedInObjectFileImage(%p, %s)\n", imageHandle, symbolName);
+
+ __block bool hasSymbol = false;
+ bool foundImage = gAllImages.forNSObjectFileImage(imageHandle, ^(OFIInfo &image) {
+ void* addr;
+ bool resultPointsToInstructions = false;
+ hasSymbol = image.loadAddress->hasExportedSymbol(symbolName, nullptr, &addr, &resultPointsToInstructions);
+ });
+
+ // ofi is invalid if not in list
+ if (!foundImage)
+ return false;
+
+ return hasSymbol;
+}
+
+void* NSGetSectionDataInObjectFileImage(NSObjectFileImage imageHandle, const char* segmentName, const char* sectionName, size_t* size)
+{
+ __block const void* result = nullptr;
+ bool foundImage = gAllImages.forNSObjectFileImage(imageHandle, ^(OFIInfo &image) {
+ uint64_t sz;
+ result = image.loadAddress->findSectionContent(segmentName, sectionName, sz);
+ *size = (size_t)sz;
+ });
+
+ // ofi is invalid if not in list
+ if (!foundImage)
+ return nullptr;
+
+ return (void*)result;
+}
+
+const char* NSNameOfModule(NSModule m)
+{
+ log_apis("NSNameOfModule(%p)\n", m);
+
+ __block const char* result = nullptr;
+ gAllImages.infoForImageMappedAt(m, ^(const LoadedImage& foundImage, uint8_t permissions) {
+ result = gAllImages.imagePath(foundImage.image());
+ });
+
+ return result;
+}
+
+const char* NSLibraryNameForModule(NSModule m)
+{
+ log_apis("NSLibraryNameForModule(%p)\n", m);
+
+ __block const char* result = nullptr;
+ gAllImages.infoForImageMappedAt(m, ^(const LoadedImage& foundImage, uint8_t permissions) {
+ result = gAllImages.imagePath(foundImage.image());
+ });
+ return result;
+ }
+
+
+static bool flatFindSymbol(const char* symbolName, void** symbolAddress, const mach_header** foundInImageAtLoadAddress)
+{
+ __block bool result = false;
+ gAllImages.forEachImage(^(const LoadedImage& loadedImage, bool& stop) {
+ bool resultPointsToInstructions = false;
+ if ( loadedImage.loadedAddress()->hasExportedSymbol(symbolName, nullptr, symbolAddress, &resultPointsToInstructions) ) {
+ *foundInImageAtLoadAddress = loadedImage.loadedAddress();
+ stop = true;
+ result = true;
+ }
+ });
+ return result;
+}
+
+bool NSIsSymbolNameDefined(const char* symbolName)
+{
+ log_apis("NSIsSymbolNameDefined(%s)\n", symbolName);
+
+ const mach_header* foundInImageAtLoadAddress;
+ void* address;
+ return flatFindSymbol(symbolName, &address, &foundInImageAtLoadAddress);
+}
+
+bool NSIsSymbolNameDefinedWithHint(const char* symbolName, const char* libraryNameHint)
+{
+ log_apis("NSIsSymbolNameDefinedWithHint(%s, %s)\n", symbolName, libraryNameHint);
+
+ const mach_header* foundInImageAtLoadAddress;
+ void* address;
+ return flatFindSymbol(symbolName, &address, &foundInImageAtLoadAddress);
+}
+
+bool NSIsSymbolNameDefinedInImage(const struct mach_header* mh, const char* symbolName)
+{
+ log_apis("NSIsSymbolNameDefinedInImage(%p, %s)\n", mh, symbolName);
+
+ void* addr;
+ bool resultPointsToInstructions = false;
+ return ((MachOLoaded*)mh)->hasExportedSymbol(symbolName, nullptr, &addr, &resultPointsToInstructions);
+}
+
+NSSymbol NSLookupAndBindSymbol(const char* symbolName)
+{
+ log_apis("NSLookupAndBindSymbol(%s)\n", symbolName);
+
+ const mach_header* foundInImageAtLoadAddress;
+ void* symbolAddress;
+ if ( flatFindSymbol(symbolName, &symbolAddress, &foundInImageAtLoadAddress) ) {
+ return (NSSymbol)symbolAddress;
+ }
+ return nullptr;
+}
+
+NSSymbol NSLookupAndBindSymbolWithHint(const char* symbolName, const char* libraryNameHint)
+{
+ log_apis("NSLookupAndBindSymbolWithHint(%s, %s)\n", symbolName, libraryNameHint);
+
+ const mach_header* foundInImageAtLoadAddress;
+ void* symbolAddress;
+ if ( flatFindSymbol(symbolName, &symbolAddress, &foundInImageAtLoadAddress) ) {
+ return (NSSymbol)symbolAddress;
+ }
+ return nullptr;
+}
+
+NSSymbol NSLookupSymbolInModule(NSModule module, const char* symbolName)
+{
+ log_apis("NSLookupSymbolInModule(%p. %s)\n", module, symbolName);
+
+ const MachOLoaded* mh = (const MachOLoaded*)module;
+ void* addr;
+ bool resultPointsToInstructions = false;
+ if ( mh->hasExportedSymbol(symbolName, nullptr, &addr, &resultPointsToInstructions) ) {
+ return (NSSymbol)addr;
+ }
+ return nullptr;
+}
+
+NSSymbol NSLookupSymbolInImage(const mach_header* mh, const char* symbolName, uint32_t options)
+{
+ log_apis("NSLookupSymbolInImage(%p, \"%s\", 0x%08X)\n", mh, symbolName, options);
+
+ void* addr;
+ bool resultPointsToInstructions = false;
+ if ( ((MachOLoaded*)mh)->hasExportedSymbol(symbolName, nullptr, &addr, &resultPointsToInstructions) ) {
+ log_apis(" NSLookupSymbolInImage() => %p\n", addr);
+ return (NSSymbol)addr;
+ }
+ if ( options & NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR ) {
+ log_apis(" NSLookupSymbolInImage() => NULL\n");
+ return nullptr;
+ }
+ // FIXME: abort();
+ return nullptr;
+}
+
+const char* NSNameOfSymbol(NSSymbol symbol)
+{
+ halt("NSNameOfSymbol() is obsolete");
+}
+
+void* NSAddressOfSymbol(NSSymbol symbol)
+{
+ log_apis("NSAddressOfSymbol(%p)\n", symbol);
+
+ // in dyld 1.0, NSSymbol was a pointer to the nlist entry in the symbol table
+ return (void*)symbol;
+}
+
+NSModule NSModuleForSymbol(NSSymbol symbol)
+{
+ log_apis("NSModuleForSymbol(%p)\n", symbol);
+
+ __block NSModule result = nullptr;
+ gAllImages.infoForImageMappedAt(symbol, ^(const LoadedImage& foundImage, uint8_t permissions) {
+ result = (NSModule)foundImage.loadedAddress();
+ });
+
+ return result;
+}
+
+void NSLinkEditError(NSLinkEditErrors *c, int *errorNumber, const char** fileName, const char** errorString)
+{
+ log_apis("NSLinkEditError(%p, %p, %p, %p)\n", c, errorNumber, fileName, errorString);
+ *c = NSLinkEditOtherError;
+ *errorNumber = 0;
+ *fileName = NULL;
+ *errorString = NULL;
+}
+
+bool NSAddLibrary(const char* pathName)
+{
+ log_apis("NSAddLibrary(%s)\n", pathName);
+
+ void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
+ return ( dlopen_internal(pathName, 0, callerAddress) != nullptr);
+}
+
+bool NSAddLibraryWithSearching(const char* pathName)
+{
+ log_apis("NSAddLibraryWithSearching(%s)\n", pathName);
+
+ void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
+ return ( dlopen_internal(pathName, 0, callerAddress) != nullptr);
+}
+
+const mach_header* NSAddImage(const char* imageName, uint32_t options)
+{
+ log_apis("NSAddImage(\"%s\", 0x%08X)\n", imageName, options);
+
+ // Note: this is a quick and dirty implementation that just uses dlopen() and ignores some option flags
+ uint32_t dloptions = 0;
+ if ( (options & NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED) != 0 )
+ dloptions |= RTLD_NOLOAD;
+
+ void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
+ void* h = dlopen_internal(imageName, dloptions, callerAddress);
+ if ( h != nullptr ) {
+ const MachOLoaded* mh;
+ bool dontContinue;
+ parseDlHandle(h, &mh, &dontContinue);
+ return mh;
+ }
+
+ if ( (options & (NSADDIMAGE_OPTION_RETURN_ON_ERROR|NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED)) == 0 ) {
+ halt("NSAddImage() image not found");
+ }
+ return nullptr;
+}
+
+void NSInstallLinkEditErrorHandlers(const NSLinkEditErrorHandlers *handlers)
+{
+ halt("NSInstallLinkEditErrorHandlers() is obsolete");
+}
+
+bool _dyld_present(void)
+{
+ log_apis("_dyld_present()\n");
+
+ return true;
+}
+
+bool _dyld_launched_prebound(void)
+{
+ halt("_dyld_launched_prebound() is obsolete");
+}
+
+bool _dyld_all_twolevel_modules_prebound(void)
+{
+ halt("_dyld_all_twolevel_modules_prebound() is obsolete");
+}
+
+bool _dyld_bind_fully_image_containing_address(const void* address)
+{
+ log_apis("_dyld_bind_fully_image_containing_address(%p)\n", address);
+
+ // in dyld3, everything is always fully bound
+ return true;
+}
+
+bool _dyld_image_containing_address(const void* address)
+{
+ log_apis("_dyld_image_containing_address(%p)\n", address);
+
+ return (dyld_image_header_containing_address(address) != nullptr);
+}
+
+void _dyld_lookup_and_bind(const char* symbolName, void **address, NSModule* module)
+{
+ log_apis("_dyld_lookup_and_bind(%s, %p, %p)\n", symbolName, address, module);
+
+ const mach_header* foundInImageAtLoadAddress;
+ if ( flatFindSymbol(symbolName, address, &foundInImageAtLoadAddress) ) {
+ *module = (NSModule)foundInImageAtLoadAddress;
+ return;
+ }
+
+ *address = 0;
+ *module = 0;
+}
+
+void _dyld_lookup_and_bind_with_hint(const char* symbolName, const char* libraryNameHint, void** address, NSModule* module)
+{
+ log_apis("_dyld_lookup_and_bind_with_hint(%s, %s, %p, %p)\n", symbolName, libraryNameHint, address, module);
+
+ const mach_header* foundInImageAtLoadAddress;
+ if ( flatFindSymbol(symbolName, address, &foundInImageAtLoadAddress) ) {
+ *module = (NSModule)foundInImageAtLoadAddress;
+ return;
+ }
+
+ *address = 0;
+ *module = 0;
+}
+
+
+void _dyld_lookup_and_bind_fully(const char* symbolName, void** address, NSModule* module)
+{
+ log_apis("_dyld_lookup_and_bind_fully(%s, %p, %p)\n", symbolName, address, module);
+
+ const mach_header* foundInImageAtLoadAddress;
+ if ( flatFindSymbol(symbolName, address, &foundInImageAtLoadAddress) ) {
+ *module = (NSModule)foundInImageAtLoadAddress;
+ return;
+ }
+
+ *address = 0;
+ *module = 0;
+}
+
+const struct mach_header* _dyld_get_image_header_containing_address(const void* address)
+{
+ log_apis("_dyld_get_image_header_containing_address(%p)\n", address);
+
+ return dyld_image_header_containing_address(address);
+}
+
+#endif
+
+
+} // namespace dyld3
+