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--- dyld/dyld-640.2/src/dyldAPIsInLibSystem.cpp
+++ /dev/null
@@ -1,1998 +0,0 @@
-/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
- *
- * Copyright (c) 2004-2012 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 <stddef.h>
-#include <string.h>
-#include <malloc/malloc.h>
-#include <sys/mman.h>
-#include <execinfo.h>
-
-#include <System/sys/csr.h>
-#include <crt_externs.h>
-#include <Availability.h>
-#include <vproc_priv.h>
-
-#include <dirent.h>
-#include <sys/stat.h>
-
-#include "mach-o/dyld_images.h"
-#include "mach-o/dyld.h"
-#include "mach-o/dyld_priv.h"
-#include "dyld_cache_format.h"
-
-#include "ImageLoader.h"
-#include "dyldLock.h"
-
-#include "../dyld3/APIs.h"
-#include "../dyld3/AllImages.h"
-#include "../dyld3/StartGlue.h"
-#include "../dyld3/Tracing.h"
-
-
-// this was in dyld_priv.h but it is no longer exported
-extern "C" {
- const struct dyld_all_image_infos* _dyld_get_all_image_infos() __attribute__((visibility("hidden")));
-}
-
-
-extern "C" int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
-extern "C" void __cxa_finalize(const void *dso);
-extern "C" void __cxa_finalize_ranges(const struct __cxa_range_t ranges[], int count);
-
-//
-// private interface between libSystem.dylib and dyld
-//
-extern "C" int _dyld_func_lookup(const char* dyld_func_name, void **address);
-
-
-extern bool gUseDyld3;
-
-#ifndef LC_VERSION_MIN_MACOSX
- #define LC_VERSION_MIN_MACOSX 0x24
- struct version_min_command {
- uint32_t cmd; /* LC_VERSION_MIN_MACOSX or
- LC_VERSION_MIN_IPHONEOS */
- uint32_t cmdsize; /* sizeof(struct min_version_command) */
- uint32_t version; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- };
-#endif
-
-#ifndef LC_VERSION_MIN_IPHONEOS
- #define LC_VERSION_MIN_IPHONEOS 0x25
-#endif
-
-#ifndef LC_VERSION_MIN_TVOS
- #define LC_VERSION_MIN_TVOS 0x2F
-#endif
-
-#ifndef LC_VERSION_MIN_WATCHOS
- #define LC_VERSION_MIN_WATCHOS 0x30
-#endif
-
-
-#ifndef LC_LOAD_UPWARD_DYLIB
- #define LC_LOAD_UPWARD_DYLIB (0x23|LC_REQ_DYLD) /* load of dylib whose initializers run later */
-#endif
-
-#ifndef LC_BUILD_VERSION
- #define LC_BUILD_VERSION 0x32 /* build for platform min OS version */
-
- /*
- * The build_version_command contains the min OS version on which this
- * binary was built to run for its platform. The list of known platforms and
- * tool values following it.
- */
- struct build_version_command {
- uint32_t cmd; /* LC_BUILD_VERSION */
- uint32_t cmdsize; /* sizeof(struct build_version_command) plus */
- /* ntools * sizeof(struct build_tool_version) */
- uint32_t platform; /* platform */
- uint32_t minos; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- uint32_t ntools; /* number of tool entries following this */
- };
-
- struct build_tool_version {
- uint32_t tool; /* enum for the tool */
- uint32_t version; /* version number of the tool */
- };
-
- /* Known values for the platform field above. */
- #define PLATFORM_MACOS 1
- #define PLATFORM_IOS 2
- #define PLATFORM_TVOS 3
- #define PLATFORM_WATCHOS 4
- #define PLATFORM_BRIDGEOS 5
-
- /* Known values for the tool field above. */
- #define TOOL_CLANG 1
- #define TOOL_SWIFT 2
- #define TOOL_LD 3
-#endif
-
-// deprecated APIs are still availble on Mac OS X, but not on iPhone OS
-#if __IPHONE_OS_VERSION_MIN_REQUIRED
- #define DEPRECATED_APIS_SUPPORTED 0
-#else
- #define DEPRECATED_APIS_SUPPORTED 1
-#endif
-
-/*
- * names_match() takes an install_name from an LC_LOAD_DYLIB command and a
- * libraryName (which is -lx or -framework Foo argument passed to the static
- * link editor for the same library) and determines if they match. This depends
- * on conventional use of names including major versioning.
- */
-static
-bool
-names_match(
-const char *install_name,
-const char* libraryName)
-{
- const char *basename;
- unsigned long n;
-
- /*
- * Conventional install names have these forms:
- * /System/Library/Frameworks/AppKit.framework/Versions/A/Appkit
- * /Local/Library/Frameworks/AppKit.framework/Appkit
- * /lib/libsys_s.A.dylib
- * /usr/lib/libsys_s.dylib
- */
- basename = strrchr(install_name, '/');
- if(basename == NULL)
- basename = install_name;
- else
- basename++;
-
- /*
- * By checking the base name matching the library name we take care
- * of the -framework cases.
- */
- if(strcmp(basename, libraryName) == 0)
- return true;
-
- /*
- * Now check the base name for "lib" if so proceed to check for the
- * -lx case dealing with a possible .X.dylib and a .dylib extension.
- */
- if(strncmp(basename, "lib", 3) ==0){
- n = strlen(libraryName);
- if(strncmp(basename+3, libraryName, n) == 0){
- if(strncmp(basename+3+n, ".dylib", 6) == 0)
- return true;
- if(basename[3+n] == '.' &&
- basename[3+n+1] != '\0' &&
- strncmp(basename+3+n+2, ".dylib", 6) == 0)
- return true;
- }
- }
- return false;
-}
-
-#if DEPRECATED_APIS_SUPPORTED
-
-void NSInstallLinkEditErrorHandlers(
-const NSLinkEditErrorHandlers* handlers)
-{
- if ( gUseDyld3 )
- return dyld3::NSInstallLinkEditErrorHandlers(handlers);
-
- DYLD_LOCK_THIS_BLOCK;
- typedef void (*ucallback_t)(const char* symbol_name);
- typedef NSModule (*mcallback_t)(NSSymbol s, NSModule old, NSModule newhandler);
- typedef void (*lcallback_t)(NSLinkEditErrors c, int errorNumber,
- const char* fileName, const char* errorString);
- static void (*p)(ucallback_t undefined, mcallback_t multiple, lcallback_t linkEdit) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_install_handlers", (void**)&p);
- mcallback_t m = handlers->multiple;
- p(handlers->undefined, m, handlers->linkEdit);
-}
-
-const char*
-NSNameOfModule(
-NSModule module)
-{
- if ( gUseDyld3 )
- return dyld3::NSNameOfModule(module);
-
- DYLD_LOCK_THIS_BLOCK;
- static const char* (*p)(NSModule module) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSNameOfModule", (void**)&p);
- return(p(module));
-}
-
-const char*
-NSLibraryNameForModule(
-NSModule module)
-{
- if ( gUseDyld3 )
- return dyld3::NSLibraryNameForModule(module);
-
- DYLD_LOCK_THIS_BLOCK;
- static const char* (*p)(NSModule module) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLibraryNameForModule", (void**)&p);
- return(p(module));
-}
-
-bool
-NSIsSymbolNameDefined(
-const char* symbolName)
-{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefined(symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const char* symbolName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSIsSymbolNameDefined", (void**)&p);
- return(p(symbolName));
-}
-
-bool
-NSIsSymbolNameDefinedWithHint(
-const char* symbolName,
-const char* libraryNameHint)
-{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefinedWithHint(symbolName, libraryNameHint);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const char* symbolName,
- const char* libraryNameHint) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSIsSymbolNameDefinedWithHint", (void**)&p);
- return(p(symbolName, libraryNameHint));
-}
-
-bool
-NSIsSymbolNameDefinedInImage(
-const struct mach_header *image,
-const char* symbolName)
-{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefinedInImage(image, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const struct mach_header *image,
- const char* symbolName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSIsSymbolNameDefinedInImage", (void**)&p);
- return(p(image, symbolName));
-}
-
-NSSymbol
-NSLookupAndBindSymbol(
-const char* symbolName)
-{
- if ( gUseDyld3 )
- return dyld3::NSLookupAndBindSymbol(symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSSymbol (*p)(const char* symbolName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLookupAndBindSymbol", (void**)&p);
- return(p(symbolName));
-}
-
-NSSymbol
-NSLookupAndBindSymbolWithHint(
-const char* symbolName,
-const char* libraryNameHint)
-{
- if ( gUseDyld3 )
- return dyld3::NSLookupAndBindSymbolWithHint(symbolName, libraryNameHint);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSSymbol (*p)(const char* symbolName,
- const char* libraryNameHint) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLookupAndBindSymbolWithHint", (void**)&p);
- return(p(symbolName, libraryNameHint));
-}
-
-NSSymbol
-NSLookupSymbolInModule(
-NSModule module,
-const char* symbolName)
-{
- if ( gUseDyld3 )
- return dyld3::NSLookupSymbolInModule(module, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSSymbol (*p)(NSModule module, const char* symbolName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLookupSymbolInModule", (void**)&p);
- return(p(module, symbolName));
-}
-
-NSSymbol
-NSLookupSymbolInImage(
-const struct mach_header *image,
-const char* symbolName,
-uint32_t options)
-{
- if ( gUseDyld3 )
- return dyld3::NSLookupSymbolInImage(image, symbolName, options);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSSymbol (*p)(const struct mach_header *image,
- const char* symbolName,
- uint32_t options) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLookupSymbolInImage", (void**)&p);
- return(p(image, symbolName, options));
-}
-
-const char*
-NSNameOfSymbol(
-NSSymbol symbol)
-{
- if ( gUseDyld3 )
- return dyld3::NSNameOfSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
- static char * (*p)(NSSymbol symbol) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSNameOfSymbol",(void**)&p);
- return(p(symbol));
-}
-
-void *
-NSAddressOfSymbol(
-NSSymbol symbol)
-{
- if ( gUseDyld3 )
- return dyld3::NSAddressOfSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
- static void * (*p)(NSSymbol symbol) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSAddressOfSymbol", (void**)&p);
- return(p(symbol));
-}
-
-NSModule
-NSModuleForSymbol(
-NSSymbol symbol)
-{
- if ( gUseDyld3 )
- return dyld3::NSModuleForSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSModule (*p)(NSSymbol symbol) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSModuleForSymbol", (void**)&p);
- return(p(symbol));
-}
-
-bool
-NSAddLibrary(
-const char* pathName)
-{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const char* pathName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSAddLibrary", (void**)&p);
- return(p(pathName));
-}
-
-bool
-NSAddLibraryWithSearching(
-const char* pathName)
-{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const char* pathName) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSAddLibraryWithSearching", (void**)&p);
- return(p(pathName));
-}
-
-const struct mach_header *
-NSAddImage(
-const char* image_name,
-uint32_t options)
-{
- if ( gUseDyld3 )
- return dyld3::NSAddImage(image_name, options);
-
- DYLD_LOCK_THIS_BLOCK;
- static const struct mach_header * (*p)(const char* image_name,
- uint32_t options) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSAddImage", (void**)&p);
- return(p(image_name, options));
-}
-#endif // DEPRECATED_APIS_SUPPORTED
-
-/*
- * This routine returns the current version of the named shared library the
- * executable it was built with. The libraryName parameter is the same as the
- * -lx or -framework Foo argument passed to the static link editor when building
- * the executable (with -lx it would be "x" and with -framework Foo it would be
- * "Foo"). If this the executable was not built against the specified library
- * it returns -1. It should be noted that if this only returns the value the
- * current version of the named shared library the executable was built with
- * and not a list of current versions that dependent libraries and bundles the
- * program is using were built with.
- */
-int32_t NSVersionOfLinkTimeLibrary(const char* libraryName)
-{
- if ( gUseDyld3 )
- return dyld3::NSVersionOfLinkTimeLibrary(libraryName);
-
- // Lazily call _NSGetMachExecuteHeader() and cache result
-#if __LP64__
- static mach_header_64* mh = NULL;
-#else
- static mach_header* mh = NULL;
-#endif
- if ( mh == NULL )
- mh = _NSGetMachExecuteHeader();
-#if __LP64__
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header_64));
-#else
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header));
-#endif
- for(uint32_t i = 0; i < mh->ncmds; i++){
- switch ( lc->cmd ) {
- case LC_LOAD_DYLIB:
- case LC_LOAD_WEAK_DYLIB:
- case LC_LOAD_UPWARD_DYLIB:
- const dylib_command* dl = (dylib_command *)lc;
- const char* install_name = (char*)dl + dl->dylib.name.offset;
- if ( names_match(install_name, libraryName) )
- return dl->dylib.current_version;
- break;
- }
- lc = (load_command*)((char*)lc + lc->cmdsize);
- }
- return (-1);
-}
-
-/*
- * This routine returns the current version of the named shared library the
- * program it is running against. The libraryName parameter is the same as
- * would be static link editor using the -lx or -framework Foo flags (with -lx
- * it would be "x" and with -framework Foo it would be "Foo"). If the program
- * is not using the specified library it returns -1.
- */
-int32_t NSVersionOfRunTimeLibrary(const char* libraryName)
-{
- if ( gUseDyld3 )
- return dyld3::NSVersionOfRunTimeLibrary(libraryName);
-
- uint32_t n = _dyld_image_count();
- for(uint32_t i = 0; i < n; i++){
- const mach_header* mh = _dyld_get_image_header(i);
- if ( mh == NULL )
- continue;
- if ( mh->filetype != MH_DYLIB )
- continue;
-#if __LP64__
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header_64));
-#else
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header));
-#endif
- for(uint32_t j = 0; j < mh->ncmds; j++){
- if ( lc->cmd == LC_ID_DYLIB ) {
- const dylib_command* dl = (dylib_command*)lc;
- const char* install_name = (char *)dl + dl->dylib.name.offset;
- if ( names_match(install_name, libraryName) )
- return dl->dylib.current_version;
- }
- lc = (load_command*)((char*)lc + lc->cmdsize);
- }
- }
- return (-1);
-}
-
-#if TARGET_OS_WATCH
-uint32_t dyld_get_program_sdk_watch_os_version()
-{
- if (gUseDyld3)
- return dyld3::dyld_get_program_sdk_watch_os_version();
-
- __block uint32_t retval = 0;
- __block bool versionFound = false;
- dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
- if (versionFound) return;
-
- if (dyld_get_base_platform(platform) == PLATFORM_WATCHOS) {
- versionFound = true;
- retval = sdk_version;
- }
- });
-
- return retval;
-}
-
-uint32_t dyld_get_program_min_watch_os_version()
-{
- if (gUseDyld3)
- return dyld3::dyld_get_program_min_watch_os_version();
-
- __block uint32_t retval = 0;
- __block bool versionFound = false;
- dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
- if (versionFound) return;
-
- if (dyld_get_base_platform(platform) == PLATFORM_WATCHOS) {
- versionFound = true;
- retval = min_version;
- }
- });
-
- return retval;
-}
-#endif
-
-#if TARGET_OS_BRIDGE
-uint32_t dyld_get_program_sdk_bridge_os_version()
-{
- if (gUseDyld3)
- return dyld3::dyld_get_program_sdk_bridge_os_version();
-
- __block uint32_t retval = 0;
- __block bool versionFound = false;
- dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
- if (versionFound) return;
-
- if (dyld_get_base_platform(platform) == PLATFORM_BRIDGEOS) {
- versionFound = true;
- retval = sdk_version;
- }
- });
-
- return retval;
-}
-
-uint32_t dyld_get_program_min_bridge_os_version()
-{
- if (gUseDyld3)
- return dyld3::dyld_get_program_min_bridge_os_version();
-
- __block uint32_t retval = 0;
- __block bool versionFound = false;
- dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
- if (versionFound) return;
-
- if (dyld_get_base_platform(platform) == PLATFORM_BRIDGEOS) {
- versionFound = true;
- retval = min_version;
- }
- });
-
- return retval;
-}
-#endif
-
-/*
- * Returns the sdk version (encode as nibble XXXX.YY.ZZ) the
- * specified binary was built against.
- *
- * First looks for LC_VERSION_MIN_* in binary and if sdk field is
- * not zero, return that value.
- * Otherwise, looks for the libSystem.B.dylib the binary linked
- * against and uses a table to convert that to an sdk version.
- */
-uint32_t dyld_get_sdk_version(const mach_header* mh)
-{
- return dyld3::dyld_get_sdk_version(mh);
-}
-
-uint32_t dyld_get_program_sdk_version()
-{
- return dyld3::dyld_get_sdk_version((mach_header*)_NSGetMachExecuteHeader());
-}
-
-uint32_t dyld_get_min_os_version(const struct mach_header* mh)
-{
- return dyld3::dyld_get_min_os_version(mh);
-}
-
-
-uint32_t dyld_get_program_min_os_version()
-{
- return dyld3::dyld_get_min_os_version((mach_header*)_NSGetMachExecuteHeader());
-}
-
-
-bool _dyld_get_image_uuid(const struct mach_header* mh, uuid_t uuid)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_uuid(mh, uuid);
-
- const load_command* startCmds = NULL;
- if ( mh->magic == MH_MAGIC_64 )
- startCmds = (load_command*)((char *)mh + sizeof(mach_header_64));
- else if ( mh->magic == MH_MAGIC )
- startCmds = (load_command*)((char *)mh + sizeof(mach_header));
- else
- return false; // not a mach-o file, or wrong endianness
-
- const load_command* const cmdsEnd = (load_command*)((char*)startCmds + mh->sizeofcmds);
- const load_command* cmd = startCmds;
- for(uint32_t i = 0; i < mh->ncmds; ++i) {
- const load_command* nextCmd = (load_command*)((char *)cmd + cmd->cmdsize);
- if ( (cmd->cmdsize < 8) || (nextCmd > cmdsEnd) || (nextCmd < startCmds)) {
- return false;
- }
- if ( cmd->cmd == LC_UUID ) {
- const uuid_command* uuidCmd = (uuid_command*)cmd;
- memcpy(uuid, uuidCmd->uuid, 16);
- return true;
- }
- cmd = nextCmd;
- }
- bzero(uuid, 16);
- return false;
-}
-
-dyld_platform_t dyld_get_active_platform(void) {
- if (gUseDyld3)
- return dyld3::dyld_get_active_platform();
-
- // HACK
- // Most of the new version SPIs have pure dyld3 implementations, but
- // They cannot get to the main executable, so we implement this here
- // and they can use this by calling ::dyld_get_active_platform() in the root namespace
- static dyld_platform_t sActivePlatform = 0;
- if (sActivePlatform) return sActivePlatform;
-
- dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
- sActivePlatform = platform;
- //FIXME assert there is only one?
- });
- return sActivePlatform;
-}
-
-dyld_platform_t dyld_get_base_platform(dyld_platform_t platform) {
- return dyld3::dyld_get_base_platform(platform);
-}
-
-bool dyld_is_simulator_platform(dyld_platform_t platform) {
- return dyld3::dyld_is_simulator_platform(platform);
-}
-
-bool dyld_sdk_at_least(const struct mach_header* mh, dyld_build_version_t version) {
- return dyld3::dyld_sdk_at_least(mh, version);
-}
-
-bool dyld_minos_at_least(const struct mach_header* mh, dyld_build_version_t version) {
- return dyld3::dyld_minos_at_least(mh, version);
-}
-
-bool dyld_program_sdk_at_least(dyld_build_version_t version) {
- return dyld3::dyld_sdk_at_least((mach_header*)_NSGetMachExecuteHeader(),version);
-}
-
-bool dyld_program_minos_at_least(dyld_build_version_t version) {
- return dyld3::dyld_minos_at_least((mach_header*)_NSGetMachExecuteHeader(), version);
-}
-
-// Function that walks through the load commands and calls the internal block for every version found
-// Intended as a fallback for very complex (and rare) version checks, or for tools that need to
-// print our everything for diagnostic reasons
-void dyld_get_image_versions(const struct mach_header* mh, void (^callback)(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version)) {
- dyld3::dyld_get_image_versions(mh, callback);
-}
-
-
-
-#if DEPRECATED_APIS_SUPPORTED
-/*
- * NSCreateObjectFileImageFromFile() creates an NSObjectFileImage for the
- * specified file name if the file is a correct Mach-O file that can be loaded
- * with NSloadModule(). For return codes of NSObjectFileImageFailure and
- * NSObjectFileImageFormat an error message is printed to stderr. All
- * other codes cause no printing.
- */
-NSObjectFileImageReturnCode
-NSCreateObjectFileImageFromFile(
-const char* pathName,
-NSObjectFileImage *objectFileImage)
-{
- if ( gUseDyld3 )
- return dyld3::NSCreateObjectFileImageFromFile(pathName, objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSCreateObjectFileImageFromFile", (void**)&p);
- return p(pathName, objectFileImage);
-}
-
-
-/*
- * NSCreateObjectFileImageFromMemory() creates an NSObjectFileImage for the
- * object file mapped into memory at address of size length if the object file
- * is a correct Mach-O file that can be loaded with NSloadModule(). For return
- * codes of NSObjectFileImageFailure and NSObjectFileImageFormat an error
- * message is printed to stderr. All other codes cause no printing.
- */
-NSObjectFileImageReturnCode
-NSCreateObjectFileImageFromMemory(
-const void* address,
-size_t size,
-NSObjectFileImage *objectFileImage)
-{
- if ( gUseDyld3 )
- return dyld3::NSCreateObjectFileImageFromMemory(address, size, objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSObjectFileImageReturnCode (*p)(const void*, size_t, NSObjectFileImage*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSCreateObjectFileImageFromMemory", (void**)&p);
- return p(address, size, objectFileImage);
-}
-
-#if OBSOLETE_DYLD_API
-/*
- * NSCreateCoreFileImageFromFile() creates an NSObjectFileImage for the
- * specified core file name if the file is a correct Mach-O core file.
- * For return codes of NSObjectFileImageFailure and NSObjectFileImageFormat
- * an error message is printed to stderr. All other codes cause no printing.
- */
-NSObjectFileImageReturnCode
-NSCreateCoreFileImageFromFile(
-const char* pathName,
-NSObjectFileImage *objectFileImage)
-{
- DYLD_LOCK_THIS_BLOCK;
- static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSCreateCoreFileImageFromFile", (void**)&p);
- return p(pathName, objectFileImage);
-}
-#endif
-
-bool
-NSDestroyObjectFileImage(
-NSObjectFileImage objectFileImage)
-{
- if ( gUseDyld3 )
- return dyld3::NSDestroyObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(NSObjectFileImage) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSDestroyObjectFileImage", (void**)&p);
- return p(objectFileImage);
-}
-
-
-NSModule
-NSLinkModule(
-NSObjectFileImage objectFileImage,
-const char* moduleName,
-uint32_t options)
-{
- if ( gUseDyld3 )
- return dyld3::NSLinkModule(objectFileImage, moduleName, options);
-
- DYLD_LOCK_THIS_BLOCK;
- static NSModule (*p)(NSObjectFileImage, const char*, unsigned long) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSLinkModule", (void**)&p);
-
- return p(objectFileImage, moduleName, options);
-}
-
-
-
-
-/*
- * NSSymbolDefinitionCountInObjectFileImage() returns the number of symbol
- * definitions in the NSObjectFileImage.
- */
-uint32_t
-NSSymbolDefinitionCountInObjectFileImage(
-NSObjectFileImage objectFileImage)
-{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSSymbolDefinitionCountInObjectFileImage", (void**)&p);
-
- return p(objectFileImage);
-}
-
-/*
- * NSSymbolDefinitionNameInObjectFileImage() returns the name of the i'th
- * symbol definitions in the NSObjectFileImage. If the ordinal specified is
- * outside the range [0..NSSymbolDefinitionCountInObjectFileImage], NULL will
- * be returned.
- */
-const char*
-NSSymbolDefinitionNameInObjectFileImage(
-NSObjectFileImage objectFileImage,
-uint32_t ordinal)
-{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionNameInObjectFileImage(objectFileImage, ordinal);
-
- DYLD_LOCK_THIS_BLOCK;
- static const char* (*p)(NSObjectFileImage, uint32_t) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSSymbolDefinitionNameInObjectFileImage", (void**)&p);
-
- return p(objectFileImage, ordinal);
-}
-
-/*
- * NSSymbolReferenceCountInObjectFileImage() returns the number of references
- * to undefined symbols the NSObjectFileImage.
- */
-uint32_t
-NSSymbolReferenceCountInObjectFileImage(
-NSObjectFileImage objectFileImage)
-{
- if ( gUseDyld3 )
- return dyld3::NSSymbolReferenceCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSSymbolReferenceCountInObjectFileImage", (void**)&p);
-
- return p(objectFileImage);
-}
-
-/*
- * NSSymbolReferenceNameInObjectFileImage() returns the name of the i'th
- * undefined symbol in the NSObjectFileImage. If the ordinal specified is
- * outside the range [0..NSSymbolReferenceCountInObjectFileImage], NULL will be
- * returned.
- */
-const char*
-NSSymbolReferenceNameInObjectFileImage(
-NSObjectFileImage objectFileImage,
-uint32_t ordinal,
-bool *tentative_definition) /* can be NULL */
-{
- if ( gUseDyld3 )
- return dyld3::NSSymbolReferenceNameInObjectFileImage(objectFileImage, ordinal, tentative_definition);
-
- DYLD_LOCK_THIS_BLOCK;
- static const char* (*p)(NSObjectFileImage, uint32_t, bool*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSSymbolReferenceNameInObjectFileImage", (void**)&p);
-
- return p(objectFileImage, ordinal, tentative_definition);
-}
-
-/*
- * NSIsSymbolDefinedInObjectFileImage() returns TRUE if the specified symbol
- * name has a definition in the NSObjectFileImage and FALSE otherwise.
- */
-bool
-NSIsSymbolDefinedInObjectFileImage(
-NSObjectFileImage objectFileImage,
-const char* symbolName)
-{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolDefinedInObjectFileImage(objectFileImage, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(NSObjectFileImage, const char*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSIsSymbolDefinedInObjectFileImage", (void**)&p);
-
- return p(objectFileImage, symbolName);
-}
-
-/*
- * NSGetSectionDataInObjectFileImage() returns a pointer to the section contents
- * in the NSObjectFileImage for the specified segmentName and sectionName if
- * it exists and it is not a zerofill section. If not it returns NULL. If
- * the parameter size is not NULL the size of the section is also returned
- * indirectly through that pointer.
- */
-void *
-NSGetSectionDataInObjectFileImage(
-NSObjectFileImage objectFileImage,
-const char* segmentName,
-const char* sectionName,
-unsigned long *size) /* can be NULL */
-{
- if ( gUseDyld3 )
- return dyld3::NSGetSectionDataInObjectFileImage(objectFileImage, segmentName, sectionName, size);
-
- DYLD_LOCK_THIS_BLOCK;
- static void* (*p)(NSObjectFileImage, const char*, const char*, unsigned long*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSGetSectionDataInObjectFileImage", (void**)&p);
-
- return p(objectFileImage, segmentName, sectionName, size);
-}
-
-
-void
-NSLinkEditError(
-NSLinkEditErrors *c,
-int *errorNumber,
-const char* *fileName,
-const char* *errorString)
-{
- if ( gUseDyld3 )
- return dyld3::NSLinkEditError(c, errorNumber, fileName, errorString);
-
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(NSLinkEditErrors *c,
- int *errorNumber,
- const char* *fileName,
- const char* *errorString) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_link_edit_error", (void**)&p);
- if(p != NULL)
- p(c, errorNumber, fileName, errorString);
-}
-
-bool
-NSUnLinkModule(
-NSModule module,
-uint32_t options)
-{
- if ( gUseDyld3 )
- return dyld3::NSUnLinkModule(module, options);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(NSModule module, uint32_t options) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_unlink_module", (void**)&p);
-
- return p(module, options);
-}
-
-#if OBSOLETE_DYLD_API
-NSModule
-NSReplaceModule(
-NSModule moduleToReplace,
-NSObjectFileImage newObjectFileImage,
-uint32_t options)
-{
- return(NULL);
-}
-#endif
-
-
-#endif // DEPRECATED_APIS_SUPPORTED
-
-/*
- *_NSGetExecutablePath copies the path of the executable into the buffer and
- * returns 0 if the path was successfully copied in the provided buffer. If the
- * buffer is not large enough, -1 is returned and the expected buffer size is
- * copied in *bufsize. Note that _NSGetExecutablePath will return "a path" to
- * the executable not a "real path" to the executable. That is the path may be
- * a symbolic link and not the real file. And with deep directories the total
- * bufsize needed could be more than MAXPATHLEN.
- */
-int
-_NSGetExecutablePath(
-char *buf,
-uint32_t *bufsize)
-{
- if ( gUseDyld3 )
- return dyld3::_NSGetExecutablePath(buf, bufsize);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static int (*p)(char *buf, uint32_t *bufsize) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld__NSGetExecutablePath", (void**)&p);
- return(p(buf, bufsize));
-}
-
-#if DEPRECATED_APIS_SUPPORTED
-void
-_dyld_lookup_and_bind(
-const char* symbol_name,
-void** address,
-NSModule* module)
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(const char*, void** , NSModule*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_lookup_and_bind", (void**)&p);
- p(symbol_name, address, module);
-}
-
-void
-_dyld_lookup_and_bind_with_hint(
-const char* symbol_name,
-const char* library_name_hint,
-void** address,
-NSModule* module)
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(const char*, const char*, void**, NSModule*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_lookup_and_bind_with_hint", (void**)&p);
- p(symbol_name, library_name_hint, address, module);
-}
-
-#if OBSOLETE_DYLD_API
-void
-_dyld_lookup_and_bind_objc(
-const char* symbol_name,
-void** address,
-NSModule* module)
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(const char* , void**, NSModule*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_lookup_and_bind_objc", (void**)&p);
- p(symbol_name, address, module);
-}
-#endif
-
-void
-_dyld_lookup_and_bind_fully(
-const char* symbol_name,
-void** address,
-NSModule* module)
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(const char*, void**, NSModule*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_lookup_and_bind_fully", (void**)&p);
- p(symbol_name, address, module);
-}
-
-bool
-_dyld_bind_fully_image_containing_address(
-const void* address)
-{
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_bind_fully_image_containing_address", (void**)&p);
- return p(address);
-}
-#endif // DEPRECATED_APIS_SUPPORTED
-
-
-/*
- * _dyld_register_func_for_add_image registers the specified function to be
- * called when a new image is added (a bundle or a dynamic shared library) to
- * the program. When this function is first registered it is called for once
- * for each image that is currently part of the program.
- */
-void
-_dyld_register_func_for_add_image(
-void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_register_func_for_add_image(func);
-
- DYLD_LOCK_THIS_BLOCK;
- typedef void (*callback_t)(const struct mach_header *mh, intptr_t vmaddr_slide);
- static void (*p)(callback_t func) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_func_for_add_image", (void**)&p);
- p(func);
-}
-
-/*
- * _dyld_register_func_for_remove_image registers the specified function to be
- * called when an image is removed (a bundle or a dynamic shared library) from
- * the program.
- */
-void
-_dyld_register_func_for_remove_image(
-void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_register_func_for_remove_image(func);
-
- DYLD_LOCK_THIS_BLOCK;
- typedef void (*callback_t)(const struct mach_header *mh, intptr_t vmaddr_slide);
- static void (*p)(callback_t func) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_func_for_remove_image", (void**)&p);
- p(func);
-}
-
-#if OBSOLETE_DYLD_API
-/*
- * _dyld_register_func_for_link_module registers the specified function to be
- * called when a module is bound into the program. When this function is first
- * registered it is called for once for each module that is currently bound into
- * the program.
- */
-void
-_dyld_register_func_for_link_module(
-void (*func)(NSModule module))
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(NSModule module)) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_func_for_link_module", (void**)&p);
- p(func);
-}
-
-/*
- * _dyld_register_func_for_unlink_module registers the specified function to be
- * called when a module is unbound from the program.
- */
-void
-_dyld_register_func_for_unlink_module(
-void (*func)(NSModule module))
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(NSModule module)) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_func_for_unlink_module", (void**)&p);
- p(func);
-}
-
-/*
- * _dyld_register_func_for_replace_module registers the specified function to be
- * called when a module is to be replace with another module in the program.
- */
-void
-_dyld_register_func_for_replace_module(
-void (*func)(NSModule oldmodule, NSModule newmodule))
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(NSModule oldmodule,
- NSModule newmodule)) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_func_for_replace_module", (void**)&p);
- p(func);
-}
-
-
-/*
- * _dyld_get_objc_module_sect_for_module is passed a module and sets a
- * pointer to the (__OBJC,__module) section and its size for the specified
- * module.
- */
-void
-_dyld_get_objc_module_sect_for_module(
-NSModule module,
-void **objc_module,
-unsigned long *size)
-{
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(NSModule module,
- void **objc_module,
- unsigned long *size) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_objc_module_sect_for_module", (void**)&p);
- p(module, objc_module, size);
-}
-
-#endif
-
-#if DEPRECATED_APIS_SUPPORTED
-bool
-_dyld_present(void)
-{
- // this function exists for compatiblity only
- return true;
-}
-#endif
-
-uint32_t
-_dyld_image_count(void)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_image_count();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static uint32_t (*p)(void) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_image_count", (void**)&p);
- return(p());
-}
-
-const struct mach_header *
-_dyld_get_image_header(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_header(image_index);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static struct mach_header * (*p)(uint32_t image_index) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_header", (void**)&p);
- return(p(image_index));
-}
-
-intptr_t
-_dyld_get_image_vmaddr_slide(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_vmaddr_slide(image_index);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static unsigned long (*p)(uint32_t image_index) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_vmaddr_slide", (void**)&p);
- return(p(image_index));
-}
-
-const char*
-_dyld_get_image_name(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_name(image_index);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const char* (*p)(uint32_t image_index) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_name", (void**)&p);
- return(p(image_index));
-}
-
-// SPI in Mac OS X 10.6
-intptr_t _dyld_get_image_slide(const struct mach_header* mh)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_slide(mh);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static intptr_t (*p)(const struct mach_header*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_slide", (void**)&p);
- return(p(mh));
-}
-
-
-#if DEPRECATED_APIS_SUPPORTED
-bool
-_dyld_image_containing_address(const void* address)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_image_containing_address(address);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_image_containing_address", (void**)&p);
- return(p(address));
-}
-
-const struct mach_header *
-_dyld_get_image_header_containing_address(
-const void* address)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_header_containing_address(address);
-
- DYLD_LOCK_THIS_BLOCK;
- static const struct mach_header * (*p)(const void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_header_containing_address", (void**)&p);
- return p(address);
-}
-
-bool _dyld_launched_prebound(void)
-{
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(void) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_launched_prebound", (void**)&p);
- return(p());
-}
-
-bool _dyld_all_twolevel_modules_prebound(void)
-{
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(void) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_all_twolevel_modules_prebound", (void**)&p);
- return(p());
-}
-#endif // DEPRECATED_APIS_SUPPORTED
-
-
-#include <dlfcn.h>
-#include <stddef.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include <mach-o/dyld.h>
-#include <servers/bootstrap.h>
-#include "dyldLibSystemInterface.h"
-
-
-// pthread key used to access per-thread dlerror message
-static pthread_key_t dlerrorPerThreadKey;
-static bool dlerrorPerThreadKeyInitialized = false;
-
-// data kept per-thread
-struct dlerrorPerThreadData
-{
- size_t sizeAllocated;
- char message[1];
-};
-
-// function called by dyld to get buffer to store dlerror message
-static char* getPerThreadBufferFor_dlerror(size_t sizeRequired)
-{
- // ok to create key lazily because this function is called within dyld lock, so there is no race condition
- if (!dlerrorPerThreadKeyInitialized ) {
- // create key and tell pthread package to call free() on any data associated with key if thread dies
- pthread_key_create(&dlerrorPerThreadKey, &free);
- dlerrorPerThreadKeyInitialized = true;
- }
-
- const size_t size = (sizeRequired < 256) ? 256 : sizeRequired;
- dlerrorPerThreadData* data = (dlerrorPerThreadData*)pthread_getspecific(dlerrorPerThreadKey);
- if ( data == NULL ) {
- //int mallocSize = offsetof(dlerrorPerThreadData, message[size]);
- const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
- data = (dlerrorPerThreadData*)malloc(mallocSize);
- data->sizeAllocated = size;
- pthread_setspecific(dlerrorPerThreadKey, data);
- }
- else if ( data->sizeAllocated < sizeRequired ) {
- free(data);
- //int mallocSize = offsetof(dlerrorPerThreadData, message[size]);
- const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
- data = (dlerrorPerThreadData*)malloc(mallocSize);
- data->sizeAllocated = size;
- pthread_setspecific(dlerrorPerThreadKey, data);
- }
- return data->message;
-}
-
-// <rdar://problem/10595338> dlerror buffer leak
-// Only allocate buffer if an actual error message needs to be set
-static bool hasPerThreadBufferFor_dlerror()
-{
- if (!dlerrorPerThreadKeyInitialized )
- return false;
-
- return (pthread_getspecific(dlerrorPerThreadKey) != NULL);
-}
-
-// use non-lazy pointer to vproc_swap_integer so that lazy binding does not recurse
-typedef vproc_err_t (*vswapproc)(vproc_t vp, vproc_gsk_t key,int64_t *inval, int64_t *outval);
-static vswapproc swapProc = &vproc_swap_integer;
-
-static bool isLaunchdOwned()
-{
- static bool checked = false;
- static bool result = false;
- if ( !checked ) {
- checked = true;
- int64_t val = 0;
- (*swapProc)(NULL, VPROC_GSK_IS_MANAGED, NULL, &val);
- result = ( val != 0 );
- }
- return result;
-}
-
-static void shared_cache_missing()
-{
- // leave until dyld's that might call this are rare
-}
-
-static void shared_cache_out_of_date()
-{
- // leave until dyld's that might call this are rare
-}
-
-
-// the table passed to dyld containing thread helpers
-static dyld::LibSystemHelpers sHelpers = { 13, &dyldGlobalLockAcquire, &dyldGlobalLockRelease,
- &getPerThreadBufferFor_dlerror, &malloc, &free, &__cxa_atexit,
- &shared_cache_missing, &shared_cache_out_of_date,
- NULL, NULL,
- &pthread_key_create, &pthread_setspecific,
- &malloc_size,
- &pthread_getspecific,
- &__cxa_finalize,
- address_of_start,
- &hasPerThreadBufferFor_dlerror,
- &isLaunchdOwned,
- &vm_allocate,
- &mmap,
- &__cxa_finalize_ranges
- };
-
-
-//
-// during initialization of libSystem this routine will run
-// and call dyld, registering the helper functions.
-//
-extern "C" void tlv_initializer();
-void _dyld_initializer()
-{
- void (*p)(dyld::LibSystemHelpers*);
-
- if ( gUseDyld3 ) {
- dyld3::gAllImages.applyInitialImages();
- }
- else {
- _dyld_func_lookup("__dyld_register_thread_helpers", (void**)&p);
- if(p != NULL)
- p(&sHelpers);
- }
-
- tlv_initializer();
-}
-
-
-char* dlerror()
-{
- if ( gUseDyld3 )
- return dyld3::dlerror();
-
- DYLD_LOCK_THIS_BLOCK;
- static char* (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlerror", (void**)&p);
- return(p());
-}
-
-int dladdr(const void* addr, Dl_info* info)
-{
- dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLADDR, (uint64_t)addr, 0, 0);
- int result = 0;
- if ( gUseDyld3 )
- return dyld3::dladdr(addr, info);
-
- DYLD_LOCK_THIS_BLOCK;
- static int (*p)(const void* , Dl_info*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dladdr", (void**)&p);
- result = p(addr, info);
- timer.setData4(result);
- timer.setData5(info != NULL ? info->dli_fbase : 0);
- timer.setData6(info != NULL ? info->dli_saddr : 0);
- return result;
-}
-
-int dlclose(void* handle)
-{
- dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLCLOSE, (uint64_t)handle, 0, 0);
- int result = 0;
- if ( gUseDyld3 )
- return dyld3::dlclose(handle);
-
- DYLD_LOCK_THIS_BLOCK;
- static int (*p)(void* handle) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlclose", (void**)&p);
- result = p(handle);
- return result;
-}
-
-void* dlopen(const char* path, int mode)
-{
- dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLOPEN, path, mode, 0);
- void* result = nullptr;
-
- if ( gUseDyld3 ) {
- result = dyld3::dlopen_internal(path, mode, __builtin_return_address(0));
- return result;
- }
-
- // dlopen is special. locking is done inside dyld to allow initializer to run without lock
- DYLD_NO_LOCK_THIS_BLOCK;
-
- static void* (*p)(const char* path, int, void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlopen_internal", (void**)&p);
- result = p(path, mode, __builtin_return_address(0));
- // use asm block to prevent tail call optimization
- // this is needed because dlopen uses __builtin_return_address() and depends on this glue being in the frame chain
- // <rdar://problem/5313172 dlopen() looks too far up stack, can cause crash>
- __asm__ volatile("");
- timer.setData4(result);
-
-#if TARGET_OS_OSX
- // HACK for iOSMac bringup rdar://40945421
- if ( result == nullptr && dyld_get_active_platform() == PLATFORM_IOSMAC && csr_check(CSR_ALLOW_APPLE_INTERNAL) == 0) {
- if (hasPerThreadBufferFor_dlerror()) {
- // first char of buffer is flag whether string (starting at second char) is valid
- char* buffer = getPerThreadBufferFor_dlerror(2);
-
- if ( buffer[0] != '\0' && (strstr(&buffer[1], "macOS dylib cannot be loaded into iOSMac process")
- || strstr(&buffer[1], "mach-o, but not built for iOSMac")) ) {
- // if valid buffer and contains an iOSMac issue
- fprintf(stderr, "dyld: iOSMac ERROR: process attempted to dlopen() dylib with macOS dependency: \n");
- fprintf(stderr, "\tdlerror: %s\n", &buffer[1]);
- fprintf(stderr, "\tBacktrace:\n");
-
- void* stackPointers[128];
- int stackPointersCnt = backtrace(stackPointers, 128);
- char** symbolicatedStack = backtrace_symbols(stackPointers, stackPointersCnt);
- for (int32_t i = 0; i < stackPointersCnt; ++i) {
- fprintf(stderr, "\t\t%s\n", symbolicatedStack[i]);
- }
- free(symbolicatedStack);
- }
- }
- }
-#endif
-
- return result;
-}
-
-bool dlopen_preflight(const char* path)
-{
- dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLOPEN_PREFLIGHT, path, 0, 0);
- bool result = false;
-
- if ( gUseDyld3 ) {
- result = dyld3::dlopen_preflight_internal(path);
- return result;
- }
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(const char* path, void* callerAddress) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlopen_preflight_internal", (void**)&p);
- result = p(path, __builtin_return_address(0));
- timer.setData4(result);
- return result;
-}
-
-void* dlsym(void* handle, const char* symbol)
-{
- dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLSYM, handle, symbol, 0);
- void* result = nullptr;
-
- if ( gUseDyld3 ) {
- result = dyld3::dlsym_internal(handle, symbol, __builtin_return_address(0));
- return result;
- }
-
- DYLD_LOCK_THIS_BLOCK;
- static void* (*p)(void* handle, const char* symbol, void *callerAddress) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlsym_internal", (void**)&p);
- result = p(handle, symbol, __builtin_return_address(0));
- timer.setData4(result);
- return result;
-}
-
-const struct dyld_all_image_infos* _dyld_get_all_image_infos()
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_all_image_infos();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static struct dyld_all_image_infos* (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_all_image_infos", (void**)&p);
- return p();
-}
-
-#if SUPPORT_ZERO_COST_EXCEPTIONS
-bool _dyld_find_unwind_sections(void* addr, dyld_unwind_sections* info)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_find_unwind_sections(addr, info);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static void* (*p)(void*, dyld_unwind_sections*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_find_unwind_sections", (void**)&p);
- return p(addr, info);
-}
-#endif
-
-
-#if __i386__ || __x86_64__ || __arm__ || __arm64__
-__attribute__((visibility("hidden")))
-void* _dyld_fast_stub_entry(void* loadercache, long lazyinfo)
-{
- DYLD_NO_LOCK_THIS_BLOCK;
- static void* (*p)(void*, long) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_fast_stub_entry", (void**)&p);
- return p(loadercache, lazyinfo);
-}
-#endif
-
-
-const char* dyld_image_path_containing_address(const void* addr)
-{
- if ( gUseDyld3 )
- return dyld3::dyld_image_path_containing_address(addr);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const char* (*p)(const void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_image_path_containing_address", (void**)&p);
- return p(addr);
-}
-
-const struct mach_header* dyld_image_header_containing_address(const void* addr)
-{
- if ( gUseDyld3 )
- return dyld3::dyld_image_header_containing_address(addr);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const mach_header* (*p)(const void*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_header_containing_address", (void**)&p);
- return p(addr);
-}
-
-
-bool dyld_shared_cache_some_image_overridden()
-{
- if ( gUseDyld3 )
- return dyld3::dyld_shared_cache_some_image_overridden();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static bool (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_shared_cache_some_image_overridden", (void**)&p);
- return p();
-}
-
-bool _dyld_get_shared_cache_uuid(uuid_t uuid)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_shared_cache_uuid(uuid);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static bool (*p)(uuid_t) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_shared_cache_uuid", (void**)&p);
- return p(uuid);
-}
-
-const void* _dyld_get_shared_cache_range(size_t* length)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_shared_cache_range(length);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const void* (*p)(size_t*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_shared_cache_range", (void**)&p);
- return p(length);
-}
-
-void _dyld_images_for_addresses(unsigned count, const void* addresses[], struct dyld_image_uuid_offset infos[])
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_images_for_addresses(count, addresses, infos);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const void (*p)(unsigned, const void*[], struct dyld_image_uuid_offset[]) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_images_for_addresses", (void**)&p);
- return p(count, addresses, infos);
-}
-
-void _dyld_register_for_image_loads(void (*func)(const mach_header* mh, const char* path, bool unloadable))
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_register_for_image_loads(func);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const void (*p)(void (*)(const mach_header* mh, const char* path, bool unloadable)) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_for_image_loads", (void**)&p);
- return p(func);
-}
-
-bool dyld_process_is_restricted()
-{
- if ( gUseDyld3 )
- return dyld3::dyld_process_is_restricted();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static bool (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_process_is_restricted", (void**)&p);
- return p();
-}
-
-const char* dyld_shared_cache_file_path()
-{
- if ( gUseDyld3 )
- return dyld3::dyld_shared_cache_file_path();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static const char* (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_shared_cache_file_path", (void**)&p);
- return p();
-}
-
-void dyld_dynamic_interpose(const struct mach_header* mh, const struct dyld_interpose_tuple array[], size_t count)
-{
- if ( gUseDyld3 )
- return dyld3::dyld_dynamic_interpose(mh, array, count);
-
- DYLD_LOCK_THIS_BLOCK;
- static void (*p)(const struct mach_header* mh, const struct dyld_interpose_tuple array[], size_t count) = NULL;
-
- if (p == NULL)
- _dyld_func_lookup("__dyld_dynamic_interpose", (void**)&p);
- p(mh, array, count);
-}
-
-
-// SPI called __fork
-void _dyld_fork_child()
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_fork_child();
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static void (*p)() = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_fork_child", (void**)&p);
- return p();
-}
-
-
-
-static void* mapStartOfCache(const char* path, size_t length)
-{
- struct stat statbuf;
- if ( ::stat(path, &statbuf) == -1 )
- return NULL;
-
- if ( (size_t)statbuf.st_size < length )
- return NULL;
-
- int cache_fd = ::open(path, O_RDONLY);
- if ( cache_fd < 0 )
- return NULL;
-
- void* result = ::mmap(NULL, length, PROT_READ, MAP_PRIVATE, cache_fd, 0);
- close(cache_fd);
-
- if ( result == MAP_FAILED )
- return NULL;
-
- return result;
-}
-
-
-static const dyld_cache_header* findCacheInDirAndMap(const uuid_t cacheUuid, const char* dirPath)
-{
- DIR* dirp = ::opendir(dirPath);
- if ( dirp != NULL) {
- dirent entry;
- dirent* entp = NULL;
- char cachePath[PATH_MAX];
- while ( ::readdir_r(dirp, &entry, &entp) == 0 ) {
- if ( entp == NULL )
- break;
- if ( entp->d_type != DT_REG )
- continue;
- if ( strlcpy(cachePath, dirPath, PATH_MAX) >= PATH_MAX )
- continue;
- if ( strlcat(cachePath, "/", PATH_MAX) >= PATH_MAX )
- continue;
- if ( strlcat(cachePath, entp->d_name, PATH_MAX) >= PATH_MAX )
- continue;
- if ( const dyld_cache_header* cacheHeader = (dyld_cache_header*)mapStartOfCache(cachePath, 0x00100000) ) {
- if ( ::memcmp(cacheHeader->uuid, cacheUuid, 16) != 0 ) {
- // wrong uuid, unmap and keep looking
- ::munmap((void*)cacheHeader, 0x00100000);
- }
- else {
- // found cache
- closedir(dirp);
- return cacheHeader;
- }
- }
- }
- closedir(dirp);
- }
- return NULL;
-}
-
-int dyld_shared_cache_find_iterate_text(const uuid_t cacheUuid, const char* extraSearchDirs[], void (^callback)(const dyld_shared_cache_dylib_text_info* info))
-{
- if ( gUseDyld3 )
- return dyld3::dyld_shared_cache_find_iterate_text(cacheUuid, extraSearchDirs, callback);
-
- const dyld_cache_header* cacheHeader = NULL;
- bool needToUnmap = true;
-
- // get info from dyld about this process, to see if requested cache is already mapped into this process
- const dyld_all_image_infos* allInfo = _dyld_get_all_image_infos();
- if ( (allInfo != NULL) && (allInfo->sharedCacheBaseAddress != 0) && (memcmp(allInfo->sharedCacheUUID, cacheUuid, 16) == 0) ) {
- // requested cache is already mapped, just re-use it
- cacheHeader = (dyld_cache_header*)(allInfo->sharedCacheBaseAddress);
- needToUnmap = false;
- }
- else {
- // look first is default location for cache files
- #if __IPHONE_OS_VERSION_MIN_REQUIRED
- const char* defaultSearchDir = IPHONE_DYLD_SHARED_CACHE_DIR;
- #else
- const char* defaultSearchDir = MACOSX_DYLD_SHARED_CACHE_DIR;
- #endif
- cacheHeader = findCacheInDirAndMap(cacheUuid, defaultSearchDir);
- // if not there, look in extra search locations
- if ( cacheHeader == NULL ) {
- for (const char** p = extraSearchDirs; *p != NULL; ++p) {
- cacheHeader = findCacheInDirAndMap(cacheUuid, *p);
- if ( cacheHeader != NULL )
- break;
- }
- }
- }
-
- if ( cacheHeader == NULL )
- return -1;
-
- if ( cacheHeader->mappingOffset < sizeof(dyld_cache_header) ) {
- // old cache without imagesText array
- if ( needToUnmap )
- ::munmap((void*)cacheHeader, 0x00100000);
- return -1;
- }
-
- // walk imageText table and call callback for each entry
- const dyld_cache_mapping_info* mappings = (dyld_cache_mapping_info*)((char*)cacheHeader + cacheHeader->mappingOffset);
- const uint64_t cacheUnslidBaseAddress = mappings[0].address;
- const dyld_cache_image_text_info* imagesText = (dyld_cache_image_text_info*)((char*)cacheHeader + cacheHeader->imagesTextOffset);
- const dyld_cache_image_text_info* imagesTextEnd = &imagesText[cacheHeader->imagesTextCount];
- for (const dyld_cache_image_text_info* p=imagesText; p < imagesTextEnd; ++p) {
- dyld_shared_cache_dylib_text_info dylibTextInfo;
- dylibTextInfo.version = 2;
- dylibTextInfo.loadAddressUnslid = p->loadAddress;
- dylibTextInfo.textSegmentSize = p->textSegmentSize;
- dylibTextInfo.path = (char*)cacheHeader + p->pathOffset;
- ::memcpy(dylibTextInfo.dylibUuid, p->uuid, 16);
- dylibTextInfo.textSegmentOffset = p->loadAddress - cacheUnslidBaseAddress;
- callback(&dylibTextInfo);
- }
-
- if ( needToUnmap )
- ::munmap((void*)cacheHeader, 0x00100000);
-
- return 0;
-}
-
-int dyld_shared_cache_iterate_text(const uuid_t cacheUuid, void (^callback)(const dyld_shared_cache_dylib_text_info* info))
-{
- if ( gUseDyld3 )
- return dyld3::dyld_shared_cache_iterate_text(cacheUuid, callback);
-
- const char* extraSearchDirs[] = { NULL };
- return dyld_shared_cache_find_iterate_text(cacheUuid, extraSearchDirs, callback);
-}
-
-
-bool _dyld_is_memory_immutable(const void* addr, size_t length)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_is_memory_immutable(addr, length);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static bool (*p)(const void*, size_t) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_is_memory_immutable", (void**)&p);
- return p(addr, length);
-}
-
-
-void _dyld_objc_notify_register(_dyld_objc_notify_mapped mapped,
- _dyld_objc_notify_init init,
- _dyld_objc_notify_unmapped unmapped)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_objc_notify_register(mapped, init, unmapped);
-
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(_dyld_objc_notify_mapped, _dyld_objc_notify_init, _dyld_objc_notify_unmapped) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_objc_notify_register", (void**)&p);
- p(mapped, init, unmapped);
-}
-
-
-