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--- dyld/dyld-43/src/dyldAPIsInLibSystem.cpp
+++ dyld/dyld-733.6/src/dyldAPIsInLibSystem.cpp
@@ -1,6 +1,6 @@
/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2012 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
@@ -24,12 +24,69 @@
#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 "mach-o/dyld.h"
-#include "mach-o/dyld_priv.h"
-
+#include <Availability.h>
+#if !TARGET_OS_DRIVERKIT
+#include <vproc_priv.h>
+#endif
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <System/sys/codesign.h>
+
+#include <mach-o/dyld_images.h>
+#include <mach-o/dyld.h>
+#include <mach-o/dyld_priv.h>
+
+#include "dyld_cache_format.h"
+#include "objc-shared-cache.h"
+
+#include "ImageLoader.h"
#include "dyldLock.h"
+
+#include "APIs.h"
+#include "AllImages.h"
+#include "StartGlue.h"
+#include "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);
+
+#if TARGET_OS_IOS && !TARGET_OS_SIMULATOR
+namespace dyld3 {
+ extern int compatFuncLookup(const char* name, void** address) __API_AVAILABLE(ios(13.0));
+}
+extern "C" void setLookupFunc(void*);
+#endif
+
+
+extern bool gUseDyld3;
+
+// deprecated APIs are still availble on Mac OS X, but not on iPhone OS
+#if __IPHONE_OS_VERSION_MIN_REQUIRED || TARGET_OS_DRIVERKIT
+ #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
@@ -40,10 +97,10 @@
static
bool
names_match(
-char *install_name,
+const char *install_name,
const char* libraryName)
{
- char *basename;
+ const char *basename;
unsigned long n;
/*
@@ -64,7 +121,7 @@
* of the -framework cases.
*/
if(strcmp(basename, libraryName) == 0)
- return(TRUE);
+ return true;
/*
* Now check the base name for "lib" if so proceed to check for the
@@ -74,36 +131,45 @@
n = strlen(libraryName);
if(strncmp(basename+3, libraryName, n) == 0){
if(strncmp(basename+3+n, ".dylib", 6) == 0)
- return(TRUE);
+ return true;
if(basename[3+n] == '.' &&
basename[3+n+1] != '\0' &&
strncmp(basename+3+n+2, ".dylib", 6) == 0)
- return(TRUE);
+ return true;
}
}
- return(FALSE);
-}
+ return false;
+}
+
+#if DEPRECATED_APIS_SUPPORTED
void NSInstallLinkEditErrorHandlers(
const NSLinkEditErrorHandlers* handlers)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
- static void (*p)(
- void (*undefined)(const char* symbol_name),
- NSModule (*multiple)(NSSymbol s, NSModule old, NSModule newhandler),
- void (*linkEdit)(NSLinkEditErrors c, int errorNumber,
- const char* fileName, const char* errorString)) = NULL;
+ 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);
- p(handlers->undefined, handlers->multiple, handlers->linkEdit);
+ mcallback_t m = handlers->multiple;
+ p(handlers->undefined, m, handlers->linkEdit);
}
const char*
NSNameOfModule(
NSModule module)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSNameOfModule(module);
+
+ DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
if(p == NULL)
@@ -115,7 +181,10 @@
NSLibraryNameForModule(
NSModule module)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLibraryNameForModule(module);
+
+ DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
if(p == NULL)
@@ -127,7 +196,10 @@
NSIsSymbolNameDefined(
const char* symbolName)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSIsSymbolNameDefined(symbolName);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* symbolName) = NULL;
if(p == NULL)
@@ -140,7 +212,10 @@
const char* symbolName,
const char* libraryNameHint)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSIsSymbolNameDefinedWithHint(symbolName, libraryNameHint);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* symbolName,
const char* libraryNameHint) = NULL;
@@ -154,7 +229,10 @@
const struct mach_header *image,
const char* symbolName)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSIsSymbolNameDefinedInImage(image, symbolName);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const struct mach_header *image,
const char* symbolName) = NULL;
@@ -167,7 +245,10 @@
NSLookupAndBindSymbol(
const char* symbolName)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLookupAndBindSymbol(symbolName);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSSymbol (*p)(const char* symbolName) = NULL;
if(p == NULL)
@@ -180,7 +261,10 @@
const char* symbolName,
const char* libraryNameHint)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLookupAndBindSymbolWithHint(symbolName, libraryNameHint);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSSymbol (*p)(const char* symbolName,
const char* libraryNameHint) = NULL;
@@ -194,7 +278,10 @@
NSModule module,
const char* symbolName)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLookupSymbolInModule(module, symbolName);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSSymbol (*p)(NSModule module, const char* symbolName) = NULL;
if(p == NULL)
@@ -208,8 +295,11 @@
const char* symbolName,
uint32_t options)
{
- DYLD_READER_LOCK_THIS_BLOCK;
- static NSSymbol (*p)(const struct mach_header *image,
+ 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;
@@ -222,7 +312,10 @@
NSNameOfSymbol(
NSSymbol symbol)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSNameOfSymbol(symbol);
+
+ DYLD_LOCK_THIS_BLOCK;
static char * (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -234,7 +327,10 @@
NSAddressOfSymbol(
NSSymbol symbol)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSAddressOfSymbol(symbol);
+
+ DYLD_LOCK_THIS_BLOCK;
static void * (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -246,7 +342,10 @@
NSModuleForSymbol(
NSSymbol symbol)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSModuleForSymbol(symbol);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSModule (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -258,7 +357,10 @@
NSAddLibrary(
const char* pathName)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSAddLibrary(pathName);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
if(p == NULL)
@@ -270,7 +372,10 @@
NSAddLibraryWithSearching(
const char* pathName)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSAddLibrary(pathName);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
if(p == NULL)
@@ -283,7 +388,10 @@
const char* image_name,
uint32_t options)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ 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;
@@ -291,6 +399,7 @@
_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
@@ -303,41 +412,38 @@
* 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)
-{
- unsigned long i;
- struct load_command *load_commands, *lc;
- struct dylib_command *dl;
- char *install_name;
-#ifndef __OPENSTEP__
- static struct mach_header *mh = NULL;
- if(mh == NULL)
+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();
-#else /* defined(__OPENSTEP__) */
-#ifdef __DYNAMIC__
- static struct mach_header *mh = NULL;
- if(mh == NULL)
- _dyld_lookup_and_bind("__mh_execute_header", &mh, NULL);
+#if __LP64__
+ const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header_64));
#else
- struct mach_header *mh;
- mh = (struct mach_header *)&_mh_execute_header;
+ const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header));
#endif
-#endif /* __OPENSTEP__ */
- load_commands = (struct load_command *)
- ((char *)mh + sizeof(struct mach_header));
- lc = load_commands;
- for(i = 0; i < mh->ncmds; i++){
- if(lc->cmd == LC_LOAD_DYLIB){
- dl = (struct dylib_command *)lc;
- install_name = (char *)dl + dl->dylib.name.offset;
- if(names_match(install_name, libraryName) == TRUE)
- return(dl->dylib.current_version);
- }
- lc = (struct load_command *)((char *)lc + lc->cmdsize);
+ 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);
+ return (-1);
}
/*
@@ -347,37 +453,224 @@
* 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)
-{
- unsigned long i, j, n;
- char *install_name;
- struct load_command *load_commands, *lc;
- struct dylib_command *dl;
- const struct mach_header *mh;
-
- n = _dyld_image_count();
- for(i = 0; i < n; i++){
- mh = _dyld_get_image_header(i);
- if(mh->filetype != MH_DYLIB)
- continue;
- load_commands = (struct load_command *)
- ((char *)mh + sizeof(struct mach_header));
- lc = load_commands;
- for(j = 0; j < mh->ncmds; j++){
- if(lc->cmd == LC_ID_DYLIB){
- dl = (struct dylib_command *)lc;
- install_name = (char *)dl + dl->dylib.name.offset;
- if(names_match(install_name, libraryName) == TRUE)
- return(dl->dylib.current_version);
- }
- lc = (struct load_command *)((char *)lc + lc->cmdsize);
+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);
-}
-
+ 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(); }
+ if (_dyld_get_all_image_infos()->version >= 16) { return (dyld_platform_t)_dyld_get_all_image_infos()->platform; }
+
+ __block dyld_platform_t result;
+ // FIXME: Remove this once we only care about version 16 or greater all image infos
+ dyld3::dyld_get_image_versions((mach_header*)_NSGetMachExecuteHeader(), ^(dyld_platform_t platform, uint32_t sdk_version, uint32_t min_version) {
+ result = platform;
+ });
+ return result;
+}
+
+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
@@ -390,7 +683,10 @@
const char* pathName,
NSObjectFileImage *objectFileImage)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSCreateObjectFileImageFromFile(pathName, objectFileImage);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
if(p == NULL)
@@ -412,7 +708,19 @@
size_t size,
NSObjectFileImage *objectFileImage)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ // <rdar://problem/51812762> NSCreatObjectFileImageFromMemory fail opaquely if Hardened runtime is enabled
+ uint32_t flags;
+ if ( csops(0, CS_OPS_STATUS, &flags, sizeof(flags)) != -1 ) {
+ if ( (flags & (CS_ENFORCEMENT|CS_KILL)) == (CS_ENFORCEMENT|CS_KILL) ) {
+ //fprintf(stderr, "dyld: warning: NSCreatObjectFileImageFromMemory() cannot be used in harden process 0x%08X\n", flags);
+ return NSObjectFileImageAccess;
+ }
+ }
+
+ if ( gUseDyld3 )
+ return dyld3::NSCreateObjectFileImageFromMemory(address, size, objectFileImage);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const void*, size_t, NSObjectFileImage*) = NULL;
if(p == NULL)
@@ -420,6 +728,7 @@
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.
@@ -431,19 +740,23 @@
const char* pathName,
NSObjectFileImage *objectFileImage)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ 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)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSDestroyObjectFileImage(objectFileImage);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
@@ -458,7 +771,10 @@
const char* moduleName,
uint32_t options)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLinkModule(objectFileImage, moduleName, options);
+
+ DYLD_LOCK_THIS_BLOCK;
static NSModule (*p)(NSObjectFileImage, const char*, unsigned long) = NULL;
if(p == NULL)
@@ -468,31 +784,6 @@
}
-/*
- * NSFindSectionAndOffsetInObjectFileImage() takes the specified imageOffset
- * into the specified ObjectFileImage and returns the segment/section name and
- * offset into that section of that imageOffset. Returns FALSE if the
- * imageOffset is not in any section. You can used the resulting sectionOffset
- * to index into the data returned by NSGetSectionDataInObjectFileImage.
- *
- * SPI: currently only used by ZeroLink to detect +load methods
- */
-bool
-NSFindSectionAndOffsetInObjectFileImage(
-NSObjectFileImage objectFileImage,
-unsigned long imageOffset,
-const char** segmentName, /* can be NULL */
-const char** sectionName, /* can be NULL */
-unsigned long* sectionOffset) /* can be NULL */
-{
- DYLD_READER_LOCK_THIS_BLOCK;
- static bool (*p)(NSObjectFileImage, unsigned long, const char**, const char**, unsigned long*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSFindSectionAndOffsetInObjectFileImage", (void**)&p);
-
- return p(objectFileImage, imageOffset, segmentName, sectionName, sectionOffset);
-}
/*
@@ -503,8 +794,11 @@
NSSymbolDefinitionCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- DYLD_READER_LOCK_THIS_BLOCK;
- static unsigned long (*p)(NSObjectFileImage) = NULL;
+ 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);
@@ -523,7 +817,10 @@
NSObjectFileImage objectFileImage,
uint32_t ordinal)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSSymbolDefinitionNameInObjectFileImage(objectFileImage, ordinal);
+
+ DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSObjectFileImage, uint32_t) = NULL;
if(p == NULL)
@@ -540,8 +837,11 @@
NSSymbolReferenceCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- DYLD_READER_LOCK_THIS_BLOCK;
- static unsigned long (*p)(NSObjectFileImage) = NULL;
+ 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);
@@ -561,7 +861,10 @@
uint32_t ordinal,
bool *tentative_definition) /* can be NULL */
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ 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)
@@ -579,7 +882,10 @@
NSObjectFileImage objectFileImage,
const char* symbolName)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSIsSymbolDefinedInObjectFileImage(objectFileImage, symbolName);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage, const char*) = NULL;
if(p == NULL)
@@ -602,7 +908,10 @@
const char* sectionName,
unsigned long *size) /* can be NULL */
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ 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)
@@ -611,24 +920,6 @@
return p(objectFileImage, segmentName, sectionName, size);
}
-/*
- * NSHasModInitObjectFileImage() returns TRUE if the NSObjectFileImage has any
- * module initialization sections and FALSE it it does not.
- *
- * SPI: currently only used by ZeroLink to detect C++ initializers
- */
-bool
-NSHasModInitObjectFileImage(
-NSObjectFileImage objectFileImage)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
- static bool (*p)(NSObjectFileImage) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSHasModInitObjectFileImage", (void**)&p);
-
- return p(objectFileImage);
-}
void
NSLinkEditError(
@@ -637,7 +928,10 @@
const char* *fileName,
const char* *errorString)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSLinkEditError(c, errorNumber, fileName, errorString);
+
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(NSLinkEditErrors *c,
int *errorNumber,
const char* *fileName,
@@ -654,7 +948,10 @@
NSModule module,
uint32_t options)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::NSUnLinkModule(module, options);
+
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(NSModule module, uint32_t options) = NULL;
if(p == NULL)
@@ -663,6 +960,7 @@
return p(module, options);
}
+#if OBSOLETE_DYLD_API
NSModule
NSReplaceModule(
NSModule moduleToReplace,
@@ -671,6 +969,10 @@
{
return(NULL);
}
+#endif
+
+
+#endif // DEPRECATED_APIS_SUPPORTED
/*
*_NSGetExecutablePath copies the path of the executable into the buffer and
@@ -686,7 +988,10 @@
char *buf,
uint32_t *bufsize)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::_NSGetExecutablePath(buf, bufsize);
+
+ DYLD_NO_LOCK_THIS_BLOCK;
static int (*p)(char *buf, uint32_t *bufsize) = NULL;
if(p == NULL)
@@ -694,13 +999,14 @@
return(p(buf, bufsize));
}
+#if DEPRECATED_APIS_SUPPORTED
void
_dyld_lookup_and_bind(
const char* symbol_name,
void** address,
NSModule* module)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(const char*, void** , NSModule*) = NULL;
if(p == NULL)
@@ -715,7 +1021,7 @@
void** address,
NSModule* module)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(const char*, const char*, void**, NSModule*) = NULL;
if(p == NULL)
@@ -723,19 +1029,21 @@
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_WRITER_LOCK_THIS_BLOCK;
+ 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(
@@ -743,7 +1051,7 @@
void** address,
NSModule* module)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(const char*, void**, NSModule*) = NULL;
if(p == NULL)
@@ -755,13 +1063,14 @@
_dyld_bind_fully_image_containing_address(
const void* address)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ 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
/*
@@ -774,8 +1083,12 @@
_dyld_register_func_for_add_image(
void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = NULL;
+ 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);
@@ -791,14 +1104,19 @@
_dyld_register_func_for_remove_image(
void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = NULL;
+ 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
@@ -809,7 +1127,7 @@
_dyld_register_func_for_link_module(
void (*func)(NSModule module))
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule module)) = NULL;
if(p == NULL)
@@ -825,7 +1143,7 @@
_dyld_register_func_for_unlink_module(
void (*func)(NSModule module))
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule module)) = NULL;
if(p == NULL)
@@ -841,7 +1159,7 @@
_dyld_register_func_for_replace_module(
void (*func)(NSModule oldmodule, NSModule newmodule))
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule oldmodule,
NSModule newmodule)) = NULL;
@@ -862,7 +1180,7 @@
void **objc_module,
unsigned long *size)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static void (*p)(NSModule module,
void **objc_module,
unsigned long *size) = NULL;
@@ -872,52 +1190,37 @@
p(module, objc_module, size);
}
-/*
- * _dyld_bind_objc_module() is passed a pointer to something in an (__OBJC,
- * __module) section and causes the module that is associated with that address
- * to be bound.
- */
-void
-_dyld_bind_objc_module(
-const void* objc_module)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
- static void (*p)(const void *objc_module) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_bind_objc_module", (void**)&p);
- p(objc_module);
-}
-
-
-#if __DYNAMIC__
+#endif
+
+#if DEPRECATED_APIS_SUPPORTED
bool
-_dyld_present(
-void)
-{
- // hmmm, this code is in libSystem.dylib, which is loaded by dyld...
+_dyld_present(void)
+{
+ // this function exists for compatiblity only
return true;
}
#endif
uint32_t
-_dyld_image_count(
-void)
-{
+_dyld_image_count(void)
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_image_count();
+
DYLD_NO_LOCK_THIS_BLOCK;
- static unsigned long (*p)(void) = NULL;
-
- if(_dyld_present() == 0)
- return(0);
+ 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)
-{
+_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;
@@ -927,9 +1230,11 @@
}
intptr_t
-_dyld_get_image_vmaddr_slide(
-uint32_t image_index)
-{
+_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;
@@ -939,9 +1244,11 @@
}
const char*
-_dyld_get_image_name(
-uint32_t image_index)
-{
+_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;
@@ -950,11 +1257,22 @@
return(p(image_index));
}
+// SPI in Mac OS X 10.6
+intptr_t _dyld_get_image_slide(const struct mach_header* mh)
+{
+ // always use dyld3 version because it does better error handling
+ return dyld3::_dyld_get_image_slide(mh);
+}
+
+
+#if DEPRECATED_APIS_SUPPORTED
bool
-_dyld_image_containing_address(
-const void* address)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
+_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)
@@ -966,7 +1284,10 @@
_dyld_get_image_header_containing_address(
const void* address)
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ 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)
@@ -974,21 +1295,9 @@
return p(address);
}
-void _dyld_moninit(
-void (*monaddition)(char *lowpc, char *highpc))
-{
- DYLD_READER_LOCK_THIS_BLOCK;
- static void (*p)(void (*monaddition)(char *lowpc, char *highpc)) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_moninit", (void**)&p);
- p(monaddition);
-}
-
-bool _dyld_launched_prebound(
-void)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
+bool _dyld_launched_prebound(void)
+{
+ DYLD_LOCK_THIS_BLOCK;
static bool (*p)(void) = NULL;
if(p == NULL)
@@ -996,16 +1305,16 @@
return(p());
}
-bool _dyld_all_twolevel_modules_prebound(
-void)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
+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>
@@ -1013,27 +1322,35 @@
#include <pthread.h>
#include <stdlib.h>
#include <mach-o/dyld.h>
-#include "dyldLock.h"
-#include "dyldLibSystemThreadHelpers.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
{
- uint32_t sizeAllocated;
+ size_t sizeAllocated;
char message[1];
};
// function called by dyld to get buffer to store dlerror message
-static char* getPerThreadBufferFor_dlerror(uint32_t sizeRequired)
-{
- const int size = (sizeRequired < 256) ? 256 : sizeRequired;
+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 int mallocSize = sizeof(dlerrorPerThreadData)+size;
+ const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
data = (dlerrorPerThreadData*)malloc(mallocSize);
data->sizeAllocated = size;
pthread_setspecific(dlerrorPerThreadKey, data);
@@ -1041,7 +1358,7 @@
else if ( data->sizeAllocated < sizeRequired ) {
free(data);
//int mallocSize = offsetof(dlerrorPerThreadData, message[size]);
- const int mallocSize = sizeof(dlerrorPerThreadData)+size;
+ const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
data = (dlerrorPerThreadData*)malloc(mallocSize);
data->sizeAllocated = size;
pthread_setspecific(dlerrorPerThreadKey, data);
@@ -1049,37 +1366,130 @@
return data->message;
}
-// that table passed to dyld containing thread helpers
-static dyld::ThreadingHelpers sThreadHelpers = { 1, &lockForLazyBinding, &unlockForLazyBinding, &getPerThreadBufferFor_dlerror };
-
+// <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);
+}
+
+#if TARGET_OS_DRIVERKIT
+static bool isLaunchdOwned()
+{
+ return false;
+}
+#else
+// 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;
+}
+#endif
+
+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
+ };
+
+static const objc_opt::objc_opt_t* gObjCOpt = nullptr;
//
// during initialization of libSystem this routine will run
-// and call dyld, registering the threading helpers.
+// and call dyld, registering the helper functions.
//
-//
-static int registerWithDyld()
-{
- static void (*p)(dyld::ThreadingHelpers*) = NULL;
-
- // create key and tell pthread package to call free() on any data associated with key if thread dies
- pthread_key_create(&dlerrorPerThreadKey, &free);
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_register_thread_helpers", (void**)&p);
- if(p != NULL)
- p(&sThreadHelpers);
-
- return 0;
-}
-
-// should be able to use __attribute__((constructor)) on registerWithDyld, but compiler has bug (3679135)
-// instead use initialization of global to force it to run.
-static int hack = registerWithDyld();
-
-
+extern "C" void tlv_initializer();
+void _dyld_initializer()
+{
+ void (*p)(dyld::LibSystemHelpers*);
+
+ // Get the optimized objc pointer now that the cache is loaded
+ const dyld_all_image_infos* allInfo = _dyld_get_all_image_infos();
+ if ( allInfo != nullptr ) {
+ const DyldSharedCache* cache = (const DyldSharedCache*)(allInfo->sharedCacheBaseAddress);
+ if ( cache != nullptr )
+ gObjCOpt = cache->objcOpt();
+ }
+
+ if ( gUseDyld3 ) {
+ dyld3::gAllImages.applyInitialImages();
+#if TARGET_OS_IOS && !TARGET_OS_SIMULATOR
+ // For binaries built before 13.0, set the lookup function if they need it
+ if (dyld_get_program_sdk_version() < DYLD_PACKED_VERSION(13,0,0))
+ setLookupFunc((void*)&dyld3::compatFuncLookup);
+#endif
+ }
+ else {
+ _dyld_func_lookup("__dyld_register_thread_helpers", (void**)&p);
+ if(p != NULL)
+ p(&sHelpers);
+ }
+
+ tlv_initializer();
+}
+
+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 ) {
+ result = dyld3::dladdr(addr, info);
+ } else {
+ 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;
+}
+
+#if !TARGET_OS_DRIVERKIT
char* dlerror()
{
- DYLD_READER_LOCK_THIS_BLOCK;
+ if ( gUseDyld3 )
+ return dyld3::dlerror();
+
+ DYLD_LOCK_THIS_BLOCK;
static char* (*p)() = NULL;
if(p == NULL)
@@ -1087,47 +1497,561 @@
return(p());
}
-int dladdr(const void* addr, Dl_info* info)
-{
- DYLD_READER_LOCK_THIS_BLOCK;
- static int (*p)(const void* , Dl_info*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dladdr", (void**)&p);
- return(p(addr, info));
-}
-
int dlclose(void* handle)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
+ dyld3::ScopedTimer timer(DBG_DYLD_TIMING_DLCLOSE, (uint64_t)handle, 0, 0);
+ int result = 0;
+ if ( gUseDyld3 ) {
+ timer.setData4(result);
+ return dyld3::dlclose(handle);
+ }
+
+ DYLD_LOCK_THIS_BLOCK;
static int (*p)(void* handle) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_dlclose", (void**)&p);
- return(p(handle));
+ result = p(handle);
+ timer.setData4(result);
+ return result;
}
void* dlopen(const char* path, int mode)
{
- DYLD_WRITER_LOCK_THIS_BLOCK;
- static void* (*p)(const char* path, int) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlopen", (void**)&p);
- return(p(path, 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));
+ timer.setData4(result);
+ 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);
+
+ 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);
+ timer.setData4(result);
+ 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)
{
- DYLD_READER_LOCK_THIS_BLOCK;
- static void* (*p)(void* handle, const char* symbol) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dlsym", (void**)&p);
- return(p(handle, 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));
+ timer.setData4(result);
+ 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;
+}
+#endif // !TARGET_OS_DRIVERKIT
+
+
+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);
+}
+
+bool _dyld_shared_cache_optimized()
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_shared_cache_optimized();
+
+ const dyld_all_image_infos* allInfo = _dyld_get_all_image_infos();
+ if ( allInfo != nullptr ) {
+ const dyld_cache_header* cacheHeader = (dyld_cache_header*)(allInfo->sharedCacheBaseAddress);
+ if ( cacheHeader != nullptr )
+ return (cacheHeader->cacheType == kDyldSharedCacheTypeProduction);
+ }
+ return false;
+}
+
+bool _dyld_shared_cache_is_locally_built()
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_shared_cache_is_locally_built();
+
+ const dyld_all_image_infos* allInfo = _dyld_get_all_image_infos();
+ if ( allInfo != nullptr ) {
+ const dyld_cache_header* cacheHeader = (dyld_cache_header*)(allInfo->sharedCacheBaseAddress);
+ if ( cacheHeader != nullptr )
+ return (cacheHeader->locallyBuiltCache == 1);
+ }
+ return false;
+}
+
+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);
+}
+
+void _dyld_register_for_bulk_image_loads(void (*func)(unsigned imageCount, const struct mach_header* mhs[], const char* paths[]))
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_register_for_bulk_image_loads(func);
+
+ DYLD_NO_LOCK_THIS_BLOCK;
+ static const void (*p)(void (*)(unsigned imageCount, const mach_header* mhs[], const char* paths[])) = NULL;
+
+ if(p == NULL)
+ _dyld_func_lookup("__dyld_register_for_bulk_image_loads", (void**)&p);
+ return p(func);
+}
+
+bool dyld_need_closure(const char* execPath, const char* tempDir)
+{
+ return dyld3::dyld_need_closure(execPath, tempDir);
+}
+
+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();
+}
+
+bool dyld_has_inserted_or_interposing_libraries()
+{
+ if ( gUseDyld3 )
+ return dyld3::dyld_has_inserted_or_interposing_libraries();
+
+ DYLD_NO_LOCK_THIS_BLOCK;
+ static bool (*p)() = NULL;
+
+ if (p == NULL)
+ _dyld_func_lookup("__dyld_has_inserted_or_interposing_libraries", (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_atfork_prepare()
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_atfork_prepare();
+}
+
+// SPI called __fork
+void _dyld_atfork_parent()
+{
+ if ( gUseDyld3 )
+ return dyld3::_dyld_atfork_parent();
+}
+
+// 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);
+}
+
+void _dyld_missing_symbol_abort()
+{
+ return dyld3::_dyld_missing_symbol_abort();
+}
+
+const char* _dyld_get_objc_selector(const char* selName)
+{
+ // Check the shared cache table if it exists.
+ if ( gObjCOpt != nullptr ) {
+ if ( const objc_opt::objc_selopt_t* selopt = gObjCOpt->selopt() ) {
+ const char* name = selopt->get(selName);
+ if (name != nullptr)
+ return name;
+ }
+ }
+
+ if ( gUseDyld3 )
+ return dyld3::_dyld_get_objc_selector(selName);
+
+ return nullptr;
+}
+
+void _dyld_for_each_objc_class(const char* className,
+ void (^callback)(void* classPtr, bool isLoaded, bool* stop)) {
+ if ( gUseDyld3 )
+ return dyld3::_dyld_for_each_objc_class(className, callback);
+}
+
+void _dyld_for_each_objc_protocol(const char* protocolName,
+ void (^callback)(void* protocolPtr, bool isLoaded, bool* stop)) {
+ if ( gUseDyld3 )
+ return dyld3::_dyld_for_each_objc_protocol(protocolName, callback);
+}
+
+void _dyld_register_driverkit_main(void (*mainFunc)(void))
+{
+ static bool (*p)(void (*mainFunc)(void)) = NULL;
+
+ if(p == NULL)
+ _dyld_func_lookup("__dyld_register_driverkit_main", (void**)&p);
+ p(mainFunc);
+}