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--- dyld/dyld-750.5/src/dyldAPIsInLibSystem.cpp
+++ dyld/dyld-360.18/src/dyldAPIsInLibSystem.cpp
@@ -26,63 +26,54 @@
#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>
-#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 "mach-o/dyld.h"
+#include "mach-o/dyld_priv.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")));
-}
-
+#include "start_glue.h"
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;
+
+#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
+
// deprecated APIs are still availble on Mac OS X, but not on iPhone OS
-#if __IPHONE_OS_VERSION_MIN_REQUIRED || TARGET_OS_DRIVERKIT
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
#define DEPRECATED_APIS_SUPPORTED 0
#else
#define DEPRECATED_APIS_SUPPORTED 1
@@ -146,9 +137,6 @@
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);
@@ -166,9 +154,6 @@
NSNameOfModule(
NSModule module)
{
- if ( gUseDyld3 )
- return dyld3::NSNameOfModule(module);
-
DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
@@ -181,9 +166,6 @@
NSLibraryNameForModule(
NSModule module)
{
- if ( gUseDyld3 )
- return dyld3::NSLibraryNameForModule(module);
-
DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
@@ -196,9 +178,6 @@
NSIsSymbolNameDefined(
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefined(symbolName);
-
DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* symbolName) = NULL;
@@ -212,9 +191,6 @@
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;
@@ -229,9 +205,6 @@
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;
@@ -245,9 +218,6 @@
NSLookupAndBindSymbol(
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSLookupAndBindSymbol(symbolName);
-
DYLD_LOCK_THIS_BLOCK;
static NSSymbol (*p)(const char* symbolName) = NULL;
@@ -261,9 +231,6 @@
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;
@@ -278,9 +245,6 @@
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;
@@ -295,11 +259,8 @@
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,
+ static NSSymbol (*p)(const struct mach_header *image,
const char* symbolName,
uint32_t options) = NULL;
@@ -312,9 +273,6 @@
NSNameOfSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSNameOfSymbol(symbol);
-
DYLD_LOCK_THIS_BLOCK;
static char * (*p)(NSSymbol symbol) = NULL;
@@ -327,9 +285,6 @@
NSAddressOfSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSAddressOfSymbol(symbol);
-
DYLD_LOCK_THIS_BLOCK;
static void * (*p)(NSSymbol symbol) = NULL;
@@ -342,9 +297,6 @@
NSModuleForSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSModuleForSymbol(symbol);
-
DYLD_LOCK_THIS_BLOCK;
static NSModule (*p)(NSSymbol symbol) = NULL;
@@ -357,9 +309,6 @@
NSAddLibrary(
const char* pathName)
{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
@@ -372,9 +321,6 @@
NSAddLibraryWithSearching(
const char* pathName)
{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
DYLD_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
@@ -388,9 +334,6 @@
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;
@@ -414,9 +357,6 @@
*/
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;
@@ -455,9 +395,6 @@
*/
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);
@@ -483,83 +420,180 @@
return (-1);
}
-#if TARGET_OS_WATCH
+
+#define PACKED_VERSION(major, minor, tiny) ((((major) & 0xffff) << 16) | (((minor) & 0xff) << 8) | ((tiny) & 0xff))
+
+
+static bool getVersionLoadCommandInfo(const mach_header* mh, uint32_t* loadCommand, uint32_t* minOS, uint32_t* sdk)
+{
+ 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 0;
+ }
+ const version_min_command* versCmd;
+ switch ( cmd->cmd ) {
+ case LC_VERSION_MIN_IPHONEOS:
+ case LC_VERSION_MIN_MACOSX:
+ case LC_VERSION_MIN_TVOS:
+ case LC_VERSION_MIN_WATCHOS:
+ versCmd = (version_min_command*)cmd;
+ *loadCommand = versCmd->cmd;
+ *minOS = versCmd->version;
+ *sdk = versCmd->sdk;
+ return true;
+ }
+ cmd = nextCmd;
+ }
+ return false;
+}
+
+#if !__WATCH_OS_VERSION_MIN_REQUIRED && !__TV_OS_VERSION_MIN_REQUIRED
+static uint32_t deriveSDKVersFromDylibs(const mach_header* mh)
+{
+ 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 0; // not a mach-o file, or wrong endianness
+
+ const load_command* const cmdsEnd = (load_command*)((char*)startCmds + mh->sizeofcmds);
+ const dylib_command* dylibCmd;
+ const load_command* cmd = startCmds;
+ const char* dylibName;
+ #if __IPHONE_OS_VERSION_MIN_REQUIRED
+ uint32_t foundationVers = 0;
+ #else
+ uint32_t libSystemVers = 0;
+ #endif
+ for(uint32_t i = 0; i < mh->ncmds; ++i) {
+ const load_command* nextCmd = (load_command*)((char *)cmd + cmd->cmdsize);
+ // <rdar://problem/14381579&16050962> sanity check size of command
+ if ( (cmd->cmdsize < 8) || (nextCmd > cmdsEnd) || (nextCmd < startCmds)) {
+ return 0;
+ }
+ switch ( cmd->cmd ) {
+ case LC_LOAD_DYLIB:
+ case LC_LOAD_WEAK_DYLIB:
+ case LC_LOAD_UPWARD_DYLIB:
+ dylibCmd = (dylib_command*)cmd;
+ // sanity check dylib command layout
+ if ( dylibCmd->dylib.name.offset > cmd->cmdsize )
+ return 0;
+ dylibName = (char*)dylibCmd + dylibCmd->dylib.name.offset;
+ #if __IPHONE_OS_VERSION_MIN_REQUIRED
+ if ( strcmp(dylibName, "/System/Library/Frameworks/Foundation.framework/Foundation") == 0 )
+ foundationVers = dylibCmd->dylib.current_version;
+ #else
+ if ( strcmp(dylibName, "/usr/lib/libSystem.B.dylib") == 0 )
+ libSystemVers = dylibCmd->dylib.current_version;
+ #endif
+ break;
+ }
+ cmd = nextCmd;
+ }
+
+ struct DylibToOSMapping {
+ uint32_t dylibVersion;
+ uint32_t osVersion;
+ };
+
+ #if __IPHONE_OS_VERSION_MIN_REQUIRED
+ static const DylibToOSMapping foundationMapping[] = {
+ { PACKED_VERSION(678,24,0), DYLD_IOS_VERSION_2_0 },
+ { PACKED_VERSION(678,26,0), DYLD_IOS_VERSION_2_1 },
+ { PACKED_VERSION(678,29,0), DYLD_IOS_VERSION_2_2 },
+ { PACKED_VERSION(678,47,0), DYLD_IOS_VERSION_3_0 },
+ { PACKED_VERSION(678,51,0), DYLD_IOS_VERSION_3_1 },
+ { PACKED_VERSION(678,60,0), DYLD_IOS_VERSION_3_2 },
+ { PACKED_VERSION(751,32,0), DYLD_IOS_VERSION_4_0 },
+ { PACKED_VERSION(751,37,0), DYLD_IOS_VERSION_4_1 },
+ { PACKED_VERSION(751,49,0), DYLD_IOS_VERSION_4_2 },
+ { PACKED_VERSION(751,58,0), DYLD_IOS_VERSION_4_3 },
+ { PACKED_VERSION(881,0,0), DYLD_IOS_VERSION_5_0 },
+ { PACKED_VERSION(890,1,0), DYLD_IOS_VERSION_5_1 },
+ { PACKED_VERSION(992,0,0), DYLD_IOS_VERSION_6_0 },
+ { PACKED_VERSION(993,0,0), DYLD_IOS_VERSION_6_1 },
+ { PACKED_VERSION(1038,14,0),DYLD_IOS_VERSION_7_0 },
+ { PACKED_VERSION(0,0,0), DYLD_IOS_VERSION_7_0 }
+ // We don't need to expand this table because all recent
+ // binaries have LC_VERSION_MIN_ load command.
+ };
+
+ if ( foundationVers != 0 ) {
+ uint32_t lastOsVersion = 0;
+ for (const DylibToOSMapping* p=foundationMapping; ; ++p) {
+ if ( p->dylibVersion == 0 )
+ return p->osVersion;
+ if ( foundationVers < p->dylibVersion )
+ return lastOsVersion;
+ lastOsVersion = p->osVersion;
+ }
+ }
+
+ #else
+ // Note: versions are for the GM release. The last entry should
+ // always be zero. At the start of the next major version,
+ // a new last entry needs to be added and the previous zero
+ // updated to the GM dylib version.
+ static const DylibToOSMapping libSystemMapping[] = {
+ { PACKED_VERSION(88,1,3), DYLD_MACOSX_VERSION_10_4 },
+ { PACKED_VERSION(111,0,0), DYLD_MACOSX_VERSION_10_5 },
+ { PACKED_VERSION(123,0,0), DYLD_MACOSX_VERSION_10_6 },
+ { PACKED_VERSION(159,0,0), DYLD_MACOSX_VERSION_10_7 },
+ { PACKED_VERSION(169,3,0), DYLD_MACOSX_VERSION_10_8 },
+ { PACKED_VERSION(1197,0,0), DYLD_MACOSX_VERSION_10_9 },
+ { PACKED_VERSION(0,0,0), DYLD_MACOSX_VERSION_10_9 }
+ // We don't need to expand this table because all recent
+ // binaries have LC_VERSION_MIN_ load command.
+ };
+
+ if ( libSystemVers != 0 ) {
+ uint32_t lastOsVersion = 0;
+ for (const DylibToOSMapping* p=libSystemMapping; ; ++p) {
+ if ( p->dylibVersion == 0 )
+ return p->osVersion;
+ if ( libSystemVers < p->dylibVersion )
+ return lastOsVersion;
+ lastOsVersion = p->osVersion;
+ }
+ }
+ #endif
+ return 0;
+}
+#endif
+
+
+#if __WATCH_OS_VERSION_MIN_REQUIRED
+static uint32_t watchVersToIOSVers(uint32_t vers)
+{
+ return vers + 0x00070000;
+}
+
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;
+ const mach_header* mh = (mach_header*)_NSGetMachExecuteHeader();
+ uint32_t loadCommand;
+ uint32_t minOS;
+ uint32_t sdk;
+
+ if ( getVersionLoadCommandInfo(mh, &loadCommand, &minOS, &sdk) ) {
+ if ( loadCommand == LC_VERSION_MIN_WATCHOS )
+ return sdk;
+ }
+ return 0;
}
#endif
@@ -574,100 +608,87 @@
*/
uint32_t dyld_get_sdk_version(const mach_header* mh)
{
- return dyld3::dyld_get_sdk_version(mh);
+ uint32_t loadCommand;
+ uint32_t minOS;
+ uint32_t sdk;
+
+ if ( getVersionLoadCommandInfo(mh, &loadCommand, &minOS, &sdk) ) {
+ switch (loadCommand) {
+#if __WATCH_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_WATCHOS:
+ // new binary. sdk version looks like "2.0" but API wants "9.0"
+ return watchVersToIOSVers(sdk);
+ case LC_VERSION_MIN_IPHONEOS:
+ // old binary. sdk matches API semantics so can return directly.
+ return sdk;
+#elif __TV_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_TVOS:
+ case LC_VERSION_MIN_IPHONEOS:
+ return sdk;
+#elif __IPHONE_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_IPHONEOS:
+ if ( sdk != 0 ) // old binaries might not have SDK set
+ return sdk;
+ break;
+#else
+ case LC_VERSION_MIN_MACOSX:
+ if ( sdk != 0 ) // old binaries might not have SDK set
+ return sdk;
+ break;
+#endif
+ }
+ }
+
+#if __WATCH_OS_VERSION_MIN_REQUIRED ||__TV_OS_VERSION_MIN_REQUIRED
+ // All WatchOS and tv OS binaries should have version load command.
+ return 0;
+#else
+ // MacOSX and iOS have old binaries without version load commmand.
+ return deriveSDKVersFromDylibs(mh);
+#endif
}
uint32_t dyld_get_program_sdk_version()
{
- return dyld3::dyld_get_sdk_version((mach_header*)_NSGetMachExecuteHeader());
+ return 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 loadCommand;
+ uint32_t minOS;
+ uint32_t sdk;
+
+ if ( getVersionLoadCommandInfo(mh, &loadCommand, &minOS, &sdk) ) {
+ switch (loadCommand) {
+#if __WATCH_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_WATCHOS:
+ // new binary. OS version looks like "2.0" but API wants "9.0"
+ return watchVersToIOSVers(minOS);
+ case LC_VERSION_MIN_IPHONEOS:
+ // old binary. OS matches API semantics so can return directly.
+ return minOS;
+#elif __TV_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_TVOS:
+ case LC_VERSION_MIN_IPHONEOS:
+ return minOS;
+#elif __IPHONE_OS_VERSION_MIN_REQUIRED
+ case LC_VERSION_MIN_IPHONEOS:
+ return minOS;
+#else
+ case LC_VERSION_MIN_MACOSX:
+ return minOS;
+#endif
+ }
+ }
+ return 0;
}
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);
-}
-
+ return dyld_get_min_os_version((mach_header*)_NSGetMachExecuteHeader());
+}
#if DEPRECATED_APIS_SUPPORTED
@@ -683,9 +704,6 @@
const char* pathName,
NSObjectFileImage *objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSCreateObjectFileImageFromFile(pathName, objectFileImage);
-
DYLD_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
@@ -708,18 +726,6 @@
size_t size,
NSObjectFileImage *objectFileImage)
{
- // <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;
@@ -753,9 +759,6 @@
NSDestroyObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSDestroyObjectFileImage(objectFileImage);
-
DYLD_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage) = NULL;
@@ -771,9 +774,6 @@
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;
@@ -794,11 +794,8 @@
NSSymbolDefinitionCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
+ DYLD_LOCK_THIS_BLOCK;
+ static unsigned long (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_NSSymbolDefinitionCountInObjectFileImage", (void**)&p);
@@ -817,9 +814,6 @@
NSObjectFileImage objectFileImage,
uint32_t ordinal)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionNameInObjectFileImage(objectFileImage, ordinal);
-
DYLD_LOCK_THIS_BLOCK;
static const char* (*p)(NSObjectFileImage, uint32_t) = NULL;
@@ -837,11 +831,8 @@
NSSymbolReferenceCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolReferenceCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
+ DYLD_LOCK_THIS_BLOCK;
+ static unsigned long (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_NSSymbolReferenceCountInObjectFileImage", (void**)&p);
@@ -861,9 +852,6 @@
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;
@@ -882,9 +870,6 @@
NSObjectFileImage objectFileImage,
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolDefinedInObjectFileImage(objectFileImage, symbolName);
-
DYLD_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage, const char*) = NULL;
@@ -908,9 +893,6 @@
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;
@@ -928,9 +910,6 @@
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,
@@ -948,9 +927,6 @@
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;
@@ -988,10 +964,7 @@
char *buf,
uint32_t *bufsize)
{
- if ( gUseDyld3 )
- return dyld3::_NSGetExecutablePath(buf, bufsize);
-
- DYLD_NO_LOCK_THIS_BLOCK;
+ DYLD_LOCK_THIS_BLOCK;
static int (*p)(char *buf, uint32_t *bufsize) = NULL;
if(p == NULL)
@@ -1083,9 +1056,6 @@
_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;
@@ -1104,9 +1074,6 @@
_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;
@@ -1190,6 +1157,21 @@
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_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);
+}
#endif
#if DEPRECATED_APIS_SUPPORTED
@@ -1204,9 +1186,6 @@
uint32_t
_dyld_image_count(void)
{
- if ( gUseDyld3 )
- return dyld3::_dyld_image_count();
-
DYLD_NO_LOCK_THIS_BLOCK;
static uint32_t (*p)(void) = NULL;
@@ -1218,9 +1197,6 @@
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;
@@ -1232,9 +1208,6 @@
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;
@@ -1246,9 +1219,6 @@
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;
@@ -1260,18 +1230,18 @@
// 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
+ 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));
+}
+
+
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;
@@ -1284,9 +1254,6 @@
_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;
@@ -1295,6 +1262,8 @@
return p(address);
}
+
+#if DEPRECATED_APIS_SUPPORTED
bool _dyld_launched_prebound(void)
{
DYLD_LOCK_THIS_BLOCK;
@@ -1322,6 +1291,7 @@
#include <pthread.h>
#include <stdlib.h>
#include <mach-o/dyld.h>
+#include <servers/bootstrap.h>
#include "dyldLibSystemInterface.h"
@@ -1376,30 +1346,24 @@
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 bool isLaunchdOwned() {
+ static bool first = true;
+ static bool result;
+ if ( first ) {
+ int64_t val = 0;
+ (*swapProc)(NULL, VPROC_GSK_IS_MANAGED, NULL, &val);
+ result = ( val != 0 );
+ first = false;
+ }
+ return result;
+}
+
+
+#if DYLD_SHARED_CACHE_SUPPORT
static void shared_cache_missing()
{
// leave until dyld's that might call this are rare
@@ -1409,12 +1373,17 @@
{
// leave until dyld's that might call this are rare
}
+#endif // DYLD_SHARED_CACHE_SUPPORT
// the table passed to dyld containing thread helpers
static dyld::LibSystemHelpers sHelpers = { 13, &dyldGlobalLockAcquire, &dyldGlobalLockRelease,
&getPerThreadBufferFor_dlerror, &malloc, &free, &__cxa_atexit,
+ #if DYLD_SHARED_CACHE_SUPPORT
&shared_cache_missing, &shared_cache_out_of_date,
+ #else
+ NULL, NULL,
+ #endif
NULL, NULL,
&pthread_key_create, &pthread_setspecific,
&malloc_size,
@@ -1425,70 +1394,29 @@
&isLaunchdOwned,
&vm_allocate,
&mmap,
- &__cxa_finalize_ranges
- };
-
-static const objc_opt::objc_opt_t* gObjCOpt = nullptr;
+ &__cxa_finalize_ranges};
+
+
//
// during initialization of libSystem this routine will run
// and call dyld, registering the helper functions.
//
extern "C" void tlv_initializer();
+extern "C" void _dyld_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);
- }
-
+ _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()
{
- if ( gUseDyld3 )
- return dyld3::dlerror();
-
DYLD_LOCK_THIS_BLOCK;
static char* (*p)() = NULL;
@@ -1497,102 +1425,78 @@
return(p());
}
+int dladdr(const void* addr, Dl_info* info)
+{
+ DYLD_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)
{
- 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);
- result = p(handle);
- timer.setData4(result);
+ return(p(handle));
+}
+
+void* dlopen(const char* path, int mode)
+{
+ // 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) = NULL;
+
+ if(p == NULL)
+ _dyld_func_lookup("__dyld_dlopen", (void**)&p);
+ void* result = p(path, mode);
+ // 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("");
+
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));
- 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;
+ DYLD_LOCK_THIS_BLOCK;
+ static bool (*p)(const char* path) = NULL;
+
+ if(p == NULL)
+ _dyld_func_lookup("__dyld_dlopen_preflight", (void**)&p);
+ return(p(path));
}
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));
- 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
+ DYLD_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));
+}
+
+void dyld_register_image_state_change_handler(dyld_image_states state,
+ bool batch, dyld_image_state_change_handler handler)
+{
+ DYLD_LOCK_THIS_BLOCK;
+ static void* (*p)(dyld_image_states, bool, dyld_image_state_change_handler) = NULL;
+
+ if(p == NULL)
+ _dyld_func_lookup("__dyld_dyld_register_image_state_change_handler", (void**)&p);
+ p(state, batch, handler);
+}
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;
@@ -1604,9 +1508,6 @@
#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;
@@ -1633,9 +1534,6 @@
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;
@@ -1646,9 +1544,6 @@
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;
@@ -1660,9 +1555,6 @@
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;
@@ -1671,109 +1563,9 @@
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;
@@ -1782,11 +1574,9 @@
return p();
}
+#if DYLD_SHARED_CACHE_SUPPORT
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;
@@ -1794,25 +1584,10 @@
_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();
-}
+#endif
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;
@@ -1821,26 +1596,10 @@
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;
@@ -1851,207 +1610,4 @@
-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);
-}
+