--- /dev/null
+++ dyld/dyld-551.4/dyld3/libdyldEntryVector.cpp
@@ -0,0 +1,149 @@
+/*
+ * 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 <stdarg.h>
+
+#include "dyld_priv.h"
+#include "libdyldEntryVector.h"
+#include "AllImages.h"
+#include "Logging.h"
+#include "PathOverrides.h"
+#include "LaunchCacheFormat.h"
+#include "start_glue.h"
+
+extern "C" void start();
+
+
+VIS_HIDDEN const char** appleParams;
+
+extern bool gUseDyld3;
+
+namespace dyld3 {
+
+
+AllImages::ProgramVars sVars;
+static void (*sChildForkFunction)();
+
+static const char* leafName(const char* argv0)
+{
+    if ( argv0 == nullptr )
+       return "";
+
+    if ( const char* lastSlash = strrchr(argv0, '/') )
+        return lastSlash+1;
+    else
+        return argv0;
+}
+
+static void entry_setVars(const mach_header* mainMH, int argc, const char* argv[], const char* envp[], const char* apple[])
+{
+    NXArgc       = argc;
+    NXArgv       = argv;
+    environ      = (char**)envp;
+    appleParams  = apple;
+    __progname   = leafName(argv[0]);
+
+    sVars.mh            = mainMH;
+    sVars.NXArgcPtr     = &NXArgc;
+    sVars.NXArgvPtr     = &NXArgv;
+    sVars.environPtr    = (const char***)&environ;
+    sVars.__prognamePtr = &__progname;
+    gAllImages.setProgramVars(&sVars);
+
+    gUseDyld3 = true;
+
+    setLoggingFromEnvs(envp);
+}
+
+static void entry_setHaltFunction(void (*func)(const char* message) __attribute__((noreturn)) )
+{
+    setHaltFunction(func);
+}
+
+static void entry_setLogFunction(void (*logFunction)(const char* format, va_list list))
+{
+    setLoggingFunction(logFunction);
+}
+
+static void entry_setOldAllImageInfo(dyld_all_image_infos* old)
+{
+    gAllImages.setOldAllImageInfo(old);
+}
+
+static void entry_setInitialImageList(const launch_cache::binary_format::Closure* closure,
+                                const void* dyldCacheLoadAddress, const char* dyldCachePath,
+                                const dyld3::launch_cache::DynArray<loader::ImageInfo>& initialImages,
+                                const mach_header* libSystemMH, const launch_cache::binary_format::Image* libSystemImage)
+{
+    gAllImages.init(closure, dyldCacheLoadAddress, dyldCachePath, initialImages);
+    gAllImages.applyInterposingToDyldCache(closure, initialImages);
+
+    const char* mainPath = _simple_getenv(appleParams, "executable_path");
+    if ( (mainPath != nullptr) && (mainPath[0] == '/') )
+        gAllImages.setMainPath(mainPath);
+
+    // ok to call before malloc is ready because 4 slots are reserved.
+    gAllImages.setInitialGroups();
+
+    // run initializer for libSytem.B.dylib
+    // this calls back into _dyld_initializer which calls gAllIimages.addImages()
+    gAllImages.runLibSystemInitializer(libSystemMH, libSystemImage);
+
+    // now that malloc is available, parse DYLD_ env vars
+    gPathOverrides.setEnvVars((const char**)environ);
+}
+
+static void entry_runInitialzersBottomUp(const mach_header* mainExecutableImageLoadAddress)
+{
+    gAllImages.runInitialzersBottomUp(mainExecutableImageLoadAddress);
+    gAllImages.notifyMonitorMain();
+}
+
+static void entry_setChildForkFunction(void (*func)() )
+{
+    sChildForkFunction = func;
+}
+
+typedef void (*StartFunc)();
+
+const LibDyldEntryVector entryVectorForDyld = {
+    LibDyldEntryVector::kCurrentVectorVersion,
+    launch_cache::binary_format::kFormatVersion,
+    &entry_setVars,
+    &entry_setHaltFunction,
+    &entry_setOldAllImageInfo,
+    &entry_setInitialImageList,
+    &entry_runInitialzersBottomUp,
+    (StartFunc)address_of_start,
+    &entry_setChildForkFunction,
+    &entry_setLogFunction,
+};
+
+VIS_HIDDEN void _dyld_fork_child()
+{
+    (*sChildForkFunction)();
+}
+
+
+} // namespace dyld3
+