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--- dyld/dyld-551.3/src/dyldAPIsInLibSystem.cpp
+++ dyld/dyld-733.6/src/dyldAPIsInLibSystem.cpp
@@ -26,25 +26,34 @@
#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 "mach-o/dyld_images.h"
-#include "mach-o/dyld.h"
-#include "mach-o/dyld_priv.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 "start_glue.h"
-
-#include "../dyld3/APIs.h"
-#include "../dyld3/AllImages.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
@@ -62,76 +71,18 @@
//
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
-
-#ifndef LC_BUILD_VERSION
- #define LC_BUILD_VERSION 0x32 /* build for platform min OS version */
-
- /*
- * The build_version_command contains the min OS version on which this
- * binary was built to run for its platform. The list of known platforms and
- * tool values following it.
- */
- struct build_version_command {
- uint32_t cmd; /* LC_BUILD_VERSION */
- uint32_t cmdsize; /* sizeof(struct build_version_command) plus */
- /* ntools * sizeof(struct build_tool_version) */
- uint32_t platform; /* platform */
- uint32_t minos; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
- uint32_t ntools; /* number of tool entries following this */
- };
-
- struct build_tool_version {
- uint32_t tool; /* enum for the tool */
- uint32_t version; /* version number of the tool */
- };
-
- /* Known values for the platform field above. */
- #define PLATFORM_MACOS 1
- #define PLATFORM_IOS 2
- #define PLATFORM_TVOS 3
- #define PLATFORM_WATCHOS 4
- #define PLATFORM_BRIDGEOS 5
-
- /* Known values for the tool field above. */
- #define TOOL_CLANG 1
- #define TOOL_SWIFT 2
- #define TOOL_LD 3
-#endif
-
-
// deprecated APIs are still availble on Mac OS X, but not on iPhone OS
-#if __IPHONE_OS_VERSION_MIN_REQUIRED
+#if __IPHONE_OS_VERSION_MIN_REQUIRED || TARGET_OS_DRIVERKIT
#define DEPRECATED_APIS_SUPPORTED 0
#else
#define DEPRECATED_APIS_SUPPORTED 1
@@ -532,262 +483,84 @@
return (-1);
}
-
-#define PACKED_VERSION(major, minor, tiny) ((((major) & 0xffff) << 16) | (((minor) & 0xff) << 8) | ((tiny) & 0xff))
-
-
-static bool getVersionLoadCommandInfo(const mach_header* mh, uint32_t* platform, 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;
- const build_version_command* buildVersCmd;
- switch ( cmd->cmd ) {
- case LC_VERSION_MIN_IPHONEOS:
- versCmd = (version_min_command*)cmd;
- *platform = PLATFORM_IOS;
- *minOS = versCmd->version;
- *sdk = versCmd->sdk;
- return true;
- case LC_VERSION_MIN_MACOSX:
- versCmd = (version_min_command*)cmd;
- *platform = PLATFORM_MACOS;
- *minOS = versCmd->version;
- *sdk = versCmd->sdk;
- return true;
- case LC_VERSION_MIN_TVOS:
- versCmd = (version_min_command*)cmd;
- *platform = PLATFORM_TVOS;
- *minOS = versCmd->version;
- *sdk = versCmd->sdk;
- return true;
- case LC_VERSION_MIN_WATCHOS:
- versCmd = (version_min_command*)cmd;
- *platform = PLATFORM_WATCHOS;
- *minOS = versCmd->version;
- *sdk = versCmd->sdk;
- return true;
- case LC_BUILD_VERSION:
- buildVersCmd = (build_version_command*)cmd;
- *platform = buildVersCmd->platform;
- *minOS = buildVersCmd->minos;
- *sdk = buildVersCmd->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), 0x00020000 },
- { PACKED_VERSION(678,26,0), 0x00020100 },
- { PACKED_VERSION(678,29,0), 0x00020200 },
- { PACKED_VERSION(678,47,0), 0x00030000 },
- { PACKED_VERSION(678,51,0), 0x00030100 },
- { PACKED_VERSION(678,60,0), 0x00030200 },
- { PACKED_VERSION(751,32,0), 0x00040000 },
- { PACKED_VERSION(751,37,0), 0x00040100 },
- { PACKED_VERSION(751,49,0), 0x00040200 },
- { PACKED_VERSION(751,58,0), 0x00040300 },
- { PACKED_VERSION(881,0,0), 0x00050000 },
- { PACKED_VERSION(890,1,0), 0x00050100 },
- { PACKED_VERSION(992,0,0), 0x00060000 },
- { PACKED_VERSION(993,0,0), 0x00060100 },
- { PACKED_VERSION(1038,14,0),0x00070000 },
- { PACKED_VERSION(0,0,0), 0x00070000 }
- // 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), 0x000A0400 },
- { PACKED_VERSION(111,0,0), 0x000A0500 },
- { PACKED_VERSION(123,0,0), 0x000A0600 },
- { PACKED_VERSION(159,0,0), 0x000A0700 },
- { PACKED_VERSION(169,3,0), 0x000A0800 },
- { PACKED_VERSION(1197,0,0), 0x000A0900 },
- { PACKED_VERSION(0,0,0), 0x000A0900 }
- // 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;
+#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 __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();
-
- const mach_header* mh = (mach_header*)_NSGetMachExecuteHeader();
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- if ( platform == PLATFORM_WATCHOS )
- return sdk;
- }
- return 0;
-}
-
-uint32_t dyld_get_program_min_watch_os_version()
-{
- if ( gUseDyld3 )
- return dyld3::dyld_get_program_min_watch_os_version();
-
- const mach_header* mh = (mach_header*)_NSGetMachExecuteHeader();
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- if ( platform == PLATFORM_WATCHOS )
- return minOS; // return raw minOS (not mapped to iOS version)
- }
- return 0;
-}
-
-#endif
-
-
-
#if TARGET_OS_BRIDGE
-static uint32_t bridgeVersToIOSVers(uint32_t vers)
-{
- return vers + 0x00090000;
-}
-
uint32_t dyld_get_program_sdk_bridge_os_version()
{
- const mach_header* mh = (mach_header*)_NSGetMachExecuteHeader();
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- if ( platform == PLATFORM_BRIDGEOS )
- return sdk;
- }
- return 0;
+ 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()
{
- const mach_header* mh = (mach_header*)_NSGetMachExecuteHeader();
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- if ( platform == PLATFORM_BRIDGEOS )
- return minOS; // return raw minOS (not mapped to iOS version)
- }
- return 0;
-}
-
+ 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
/*
@@ -801,112 +574,23 @@
*/
uint32_t dyld_get_sdk_version(const mach_header* mh)
{
- if ( gUseDyld3 )
- return dyld3::dyld_get_sdk_version(mh);
-
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- switch (platform) {
-#if TARGET_OS_BRIDGE
- case PLATFORM_BRIDGEOS:
- // new binary. sdk version looks like "2.0" but API wants "11.0"
- return bridgeVersToIOSVers(sdk);
- case PLATFORM_IOS:
- // old binary. sdk matches API semantics so can return directly.
- return sdk;
-#elif __WATCH_OS_VERSION_MIN_REQUIRED
- case PLATFORM_WATCHOS:
- // new binary. sdk version looks like "2.0" but API wants "9.0"
- return watchVersToIOSVers(sdk);
- case PLATFORM_IOS:
- // old binary. sdk matches API semantics so can return directly.
- return sdk;
-#elif __TV_OS_VERSION_MIN_REQUIRED
- case PLATFORM_TVOS:
- case PLATFORM_IOS:
- return sdk;
-#elif __IPHONE_OS_VERSION_MIN_REQUIRED
- case PLATFORM_IOS:
- if ( sdk != 0 ) // old binaries might not have SDK set
- return sdk;
- break;
-#else
- case PLATFORM_MACOS:
- 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 || TARGET_OS_BRIDGE
- // 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
+ return dyld3::dyld_get_sdk_version(mh);
}
uint32_t dyld_get_program_sdk_version()
{
- if ( gUseDyld3 )
- return dyld3::dyld_get_program_sdk_version();
-
- return dyld_get_sdk_version((mach_header*)_NSGetMachExecuteHeader());
+ return dyld3::dyld_get_sdk_version((mach_header*)_NSGetMachExecuteHeader());
}
uint32_t dyld_get_min_os_version(const struct mach_header* mh)
{
- if ( gUseDyld3 )
- return dyld3::dyld_get_min_os_version(mh);
-
- uint32_t platform;
- uint32_t minOS;
- uint32_t sdk;
-
- if ( getVersionLoadCommandInfo(mh, &platform, &minOS, &sdk) ) {
- switch (platform) {
-#if TARGET_OS_BRIDGE
- case PLATFORM_BRIDGEOS:
- // new binary. sdk version looks like "2.0" but API wants "11.0"
- return bridgeVersToIOSVers(minOS);
- case PLATFORM_IOS:
- // old binary. sdk matches API semantics so can return directly.
- return minOS;
-#elif __WATCH_OS_VERSION_MIN_REQUIRED
- case PLATFORM_WATCHOS:
- // new binary. OS version looks like "2.0" but API wants "9.0"
- return watchVersToIOSVers(minOS);
- case PLATFORM_IOS:
- // old binary. OS matches API semantics so can return directly.
- return minOS;
-#elif __TV_OS_VERSION_MIN_REQUIRED
- case PLATFORM_TVOS:
- case PLATFORM_IOS:
- return minOS;
-#elif __IPHONE_OS_VERSION_MIN_REQUIRED
- case PLATFORM_IOS:
- return minOS;
-#else
- case PLATFORM_MACOS:
- return minOS;
-#endif
- }
- }
- return 0;
+ return dyld3::dyld_get_min_os_version(mh);
}
uint32_t dyld_get_program_min_os_version()
{
- if ( gUseDyld3 )
- return dyld3::dyld_get_program_min_os_version();
-
- return dyld_get_min_os_version((mach_header*)_NSGetMachExecuteHeader());
+ return dyld3::dyld_get_min_os_version((mach_header*)_NSGetMachExecuteHeader());
}
@@ -941,6 +625,49 @@
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
@@ -981,6 +708,15 @@
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);
@@ -1524,15 +1260,8 @@
// SPI in Mac OS X 10.6
intptr_t _dyld_get_image_slide(const struct mach_header* mh)
{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_slide(mh);
-
- DYLD_NO_LOCK_THIS_BLOCK;
- static intptr_t (*p)(const struct mach_header*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_get_image_slide", (void**)&p);
- return(p(mh));
+ // always use dyld3 version because it does better error handling
+ return dyld3::_dyld_get_image_slide(mh);
}
@@ -1593,7 +1322,6 @@
#include <pthread.h>
#include <stdlib.h>
#include <mach-o/dyld.h>
-#include <servers/bootstrap.h>
#include "dyldLibSystemInterface.h"
@@ -1648,16 +1376,29 @@
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()
{
- int64_t val = 0;
- (*swapProc)(NULL, VPROC_GSK_IS_MANAGED, NULL, &val);
- return ( val != 0 );
-}
+ 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()
{
@@ -1685,9 +1426,9 @@
&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 helper functions.
@@ -1697,8 +1438,21 @@
{
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);
@@ -1709,7 +1463,27 @@
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 )
@@ -1723,78 +1497,96 @@
return(p());
}
-int dladdr(const void* addr, Dl_info* info)
-{
- if ( gUseDyld3 )
- return dyld3::dladdr(addr, info);
-
- DYLD_LOCK_THIS_BLOCK;
- static int (*p)(const void* , Dl_info*) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_dladdr", (void**)&p);
- return(p(addr, info));
-}
-
int dlclose(void* handle)
{
- if ( gUseDyld3 )
+ 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)
-{
- if ( gUseDyld3 )
- return dyld3::dlopen(path, 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("");
-
+{
+ 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)
{
- if ( gUseDyld3 )
- return dyld3::dlopen_preflight(path);
-
- 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));
+ 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)
{
- if ( gUseDyld3 )
- return dyld3::dlsym(handle, symbol);
-
- 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));
-}
+ 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()
{
@@ -1905,6 +1697,77 @@
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()
{
@@ -1932,6 +1795,19 @@
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 )
@@ -1945,6 +1821,19 @@
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()
@@ -1968,7 +1857,7 @@
if ( ::stat(path, &statbuf) == -1 )
return NULL;
- if ( statbuf.st_size < length )
+ if ( (size_t)statbuf.st_size < length )
return NULL;
int cache_fd = ::open(path, O_RDONLY);
@@ -2124,7 +2013,45 @@
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);
+}