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--- dyld/dyld-750.5/src/dyldAPIsInLibSystem.cpp
+++ dyld/dyld-44.2/src/dyldAPIsInLibSystem.cpp
@@ -1,6 +1,6 @@
/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2004-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
@@ -24,69 +24,12 @@
#include <stddef.h>
#include <string.h>
-#include <malloc/malloc.h>
-#include <sys/mman.h>
-#include <execinfo.h>
-
-#include <System/sys/csr.h>
#include <crt_externs.h>
-#include <Availability.h>
-#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 "mach-o/dyld.h"
+#include "mach-o/dyld_priv.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
@@ -97,10 +40,10 @@
static
bool
names_match(
-const char *install_name,
+char *install_name,
const char* libraryName)
{
- const char *basename;
+ char *basename;
unsigned long n;
/*
@@ -121,7 +64,7 @@
* 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
@@ -131,45 +74,36 @@
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;
-}
-
-#if DEPRECATED_APIS_SUPPORTED
+ return(FALSE);
+}
void NSInstallLinkEditErrorHandlers(
const NSLinkEditErrorHandlers* handlers)
{
- if ( gUseDyld3 )
- return dyld3::NSInstallLinkEditErrorHandlers(handlers);
-
- DYLD_LOCK_THIS_BLOCK;
- typedef void (*ucallback_t)(const char* symbol_name);
- typedef NSModule (*mcallback_t)(NSSymbol s, NSModule old, NSModule newhandler);
- typedef void (*lcallback_t)(NSLinkEditErrors c, int errorNumber,
- const char* fileName, const char* errorString);
- static void (*p)(ucallback_t undefined, mcallback_t multiple, lcallback_t linkEdit) = NULL;
+ 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(p == NULL)
_dyld_func_lookup("__dyld_install_handlers", (void**)&p);
- mcallback_t m = handlers->multiple;
- p(handlers->undefined, m, handlers->linkEdit);
+ p(handlers->undefined, handlers->multiple, handlers->linkEdit);
}
const char*
NSNameOfModule(
NSModule module)
{
- if ( gUseDyld3 )
- return dyld3::NSNameOfModule(module);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
if(p == NULL)
@@ -181,10 +115,7 @@
NSLibraryNameForModule(
NSModule module)
{
- if ( gUseDyld3 )
- return dyld3::NSLibraryNameForModule(module);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static const char* (*p)(NSModule module) = NULL;
if(p == NULL)
@@ -196,10 +127,7 @@
NSIsSymbolNameDefined(
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefined(symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static bool (*p)(const char* symbolName) = NULL;
if(p == NULL)
@@ -212,10 +140,7 @@
const char* symbolName,
const char* libraryNameHint)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefinedWithHint(symbolName, libraryNameHint);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static bool (*p)(const char* symbolName,
const char* libraryNameHint) = NULL;
@@ -229,10 +154,7 @@
const struct mach_header *image,
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolNameDefinedInImage(image, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static bool (*p)(const struct mach_header *image,
const char* symbolName) = NULL;
@@ -245,10 +167,7 @@
NSLookupAndBindSymbol(
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSLookupAndBindSymbol(symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSSymbol (*p)(const char* symbolName) = NULL;
if(p == NULL)
@@ -261,10 +180,7 @@
const char* symbolName,
const char* libraryNameHint)
{
- if ( gUseDyld3 )
- return dyld3::NSLookupAndBindSymbolWithHint(symbolName, libraryNameHint);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSSymbol (*p)(const char* symbolName,
const char* libraryNameHint) = NULL;
@@ -278,10 +194,7 @@
NSModule module,
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSLookupSymbolInModule(module, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static NSSymbol (*p)(NSModule module, const char* symbolName) = NULL;
if(p == NULL)
@@ -295,11 +208,8 @@
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,
+ DYLD_READER_LOCK_THIS_BLOCK;
+ static NSSymbol (*p)(const struct mach_header *image,
const char* symbolName,
uint32_t options) = NULL;
@@ -312,10 +222,7 @@
NSNameOfSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSNameOfSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static char * (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -327,10 +234,7 @@
NSAddressOfSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSAddressOfSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static void * (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -342,10 +246,7 @@
NSModuleForSymbol(
NSSymbol symbol)
{
- if ( gUseDyld3 )
- return dyld3::NSModuleForSymbol(symbol);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static NSModule (*p)(NSSymbol symbol) = NULL;
if(p == NULL)
@@ -357,10 +258,7 @@
NSAddLibrary(
const char* pathName)
{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
if(p == NULL)
@@ -372,10 +270,7 @@
NSAddLibraryWithSearching(
const char* pathName)
{
- if ( gUseDyld3 )
- return dyld3::NSAddLibrary(pathName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static bool (*p)(const char* pathName) = NULL;
if(p == NULL)
@@ -388,10 +283,7 @@
const char* image_name,
uint32_t options)
{
- if ( gUseDyld3 )
- return dyld3::NSAddImage(image_name, options);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static const struct mach_header * (*p)(const char* image_name,
uint32_t options) = NULL;
@@ -399,7 +291,6 @@
_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
@@ -412,38 +303,41 @@
* and not a list of current versions that dependent libraries and bundles the
* program is using were built with.
*/
-int32_t NSVersionOfLinkTimeLibrary(const char* libraryName)
-{
- if ( gUseDyld3 )
- return dyld3::NSVersionOfLinkTimeLibrary(libraryName);
-
- // Lazily call _NSGetMachExecuteHeader() and cache result
-#if __LP64__
- static mach_header_64* mh = NULL;
+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)
+ 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);
#else
- static mach_header* mh = NULL;
+ struct mach_header *mh;
+ mh = (struct mach_header *)&_mh_execute_header;
#endif
- if ( mh == NULL )
- mh = _NSGetMachExecuteHeader();
-#if __LP64__
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header_64));
-#else
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header));
-#endif
- for(uint32_t i = 0; i < mh->ncmds; i++){
- switch ( lc->cmd ) {
- case LC_LOAD_DYLIB:
- case LC_LOAD_WEAK_DYLIB:
- case LC_LOAD_UPWARD_DYLIB:
- const dylib_command* dl = (dylib_command *)lc;
- const char* install_name = (char*)dl + dl->dylib.name.offset;
- if ( names_match(install_name, libraryName) )
- return dl->dylib.current_version;
- break;
- }
- lc = (load_command*)((char*)lc + lc->cmdsize);
+#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);
}
- return (-1);
+ return(-1);
}
/*
@@ -453,224 +347,37 @@
* it would be "x" and with -framework Foo it would be "Foo"). If the program
* is not using the specified library it returns -1.
*/
-int32_t NSVersionOfRunTimeLibrary(const char* libraryName)
-{
- if ( gUseDyld3 )
- return dyld3::NSVersionOfRunTimeLibrary(libraryName);
-
- uint32_t n = _dyld_image_count();
- for(uint32_t i = 0; i < n; i++){
- const mach_header* mh = _dyld_get_image_header(i);
- if ( mh == NULL )
- continue;
- if ( mh->filetype != MH_DYLIB )
- continue;
-#if __LP64__
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header_64));
-#else
- const load_command* lc = (load_command*)((char*)mh + sizeof(mach_header));
-#endif
- for(uint32_t j = 0; j < mh->ncmds; j++){
- if ( lc->cmd == LC_ID_DYLIB ) {
- const dylib_command* dl = (dylib_command*)lc;
- const char* install_name = (char *)dl + dl->dylib.name.offset;
- if ( names_match(install_name, libraryName) )
- return dl->dylib.current_version;
- }
- lc = (load_command*)((char*)lc + lc->cmdsize);
+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);
}
}
- 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
+ return(-1);
+}
+
/*
* NSCreateObjectFileImageFromFile() creates an NSObjectFileImage for the
* specified file name if the file is a correct Mach-O file that can be loaded
@@ -683,10 +390,7 @@
const char* pathName,
NSObjectFileImage *objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSCreateObjectFileImageFromFile(pathName, objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
if(p == NULL)
@@ -708,19 +412,7 @@
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;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const void*, size_t, NSObjectFileImage*) = NULL;
if(p == NULL)
@@ -728,7 +420,6 @@
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.
@@ -740,23 +431,19 @@
const char* pathName,
NSObjectFileImage *objectFileImage)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSObjectFileImageReturnCode (*p)(const char*, NSObjectFileImage*) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_NSCreateCoreFileImageFromFile", (void**)&p);
return p(pathName, objectFileImage);
}
-#endif
bool
NSDestroyObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSDestroyObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
@@ -771,10 +458,7 @@
const char* moduleName,
uint32_t options)
{
- if ( gUseDyld3 )
- return dyld3::NSLinkModule(objectFileImage, moduleName, options);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static NSModule (*p)(NSObjectFileImage, const char*, unsigned long) = NULL;
if(p == NULL)
@@ -784,6 +468,31 @@
}
+/*
+ * 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);
+}
/*
@@ -794,11 +503,8 @@
NSSymbolDefinitionCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
+ DYLD_READER_LOCK_THIS_BLOCK;
+ static unsigned long (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_NSSymbolDefinitionCountInObjectFileImage", (void**)&p);
@@ -817,10 +523,7 @@
NSObjectFileImage objectFileImage,
uint32_t ordinal)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolDefinitionNameInObjectFileImage(objectFileImage, ordinal);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static const char* (*p)(NSObjectFileImage, uint32_t) = NULL;
if(p == NULL)
@@ -837,11 +540,8 @@
NSSymbolReferenceCountInObjectFileImage(
NSObjectFileImage objectFileImage)
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolReferenceCountInObjectFileImage(objectFileImage);
-
- DYLD_LOCK_THIS_BLOCK;
- static uint32_t (*p)(NSObjectFileImage) = NULL;
+ DYLD_READER_LOCK_THIS_BLOCK;
+ static unsigned long (*p)(NSObjectFileImage) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_NSSymbolReferenceCountInObjectFileImage", (void**)&p);
@@ -861,10 +561,7 @@
uint32_t ordinal,
bool *tentative_definition) /* can be NULL */
{
- if ( gUseDyld3 )
- return dyld3::NSSymbolReferenceNameInObjectFileImage(objectFileImage, ordinal, tentative_definition);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static const char* (*p)(NSObjectFileImage, uint32_t, bool*) = NULL;
if(p == NULL)
@@ -882,10 +579,7 @@
NSObjectFileImage objectFileImage,
const char* symbolName)
{
- if ( gUseDyld3 )
- return dyld3::NSIsSymbolDefinedInObjectFileImage(objectFileImage, symbolName);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static bool (*p)(NSObjectFileImage, const char*) = NULL;
if(p == NULL)
@@ -908,10 +602,7 @@
const char* sectionName,
unsigned long *size) /* can be NULL */
{
- if ( gUseDyld3 )
- return dyld3::NSGetSectionDataInObjectFileImage(objectFileImage, segmentName, sectionName, size);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static void* (*p)(NSObjectFileImage, const char*, const char*, unsigned long*) = NULL;
if(p == NULL)
@@ -920,6 +611,24 @@
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(
@@ -928,10 +637,7 @@
const char* *fileName,
const char* *errorString)
{
- if ( gUseDyld3 )
- return dyld3::NSLinkEditError(c, errorNumber, fileName, errorString);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(NSLinkEditErrors *c,
int *errorNumber,
const char* *fileName,
@@ -948,10 +654,7 @@
NSModule module,
uint32_t options)
{
- if ( gUseDyld3 )
- return dyld3::NSUnLinkModule(module, options);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static bool (*p)(NSModule module, uint32_t options) = NULL;
if(p == NULL)
@@ -960,7 +663,6 @@
return p(module, options);
}
-#if OBSOLETE_DYLD_API
NSModule
NSReplaceModule(
NSModule moduleToReplace,
@@ -969,10 +671,6 @@
{
return(NULL);
}
-#endif
-
-
-#endif // DEPRECATED_APIS_SUPPORTED
/*
*_NSGetExecutablePath copies the path of the executable into the buffer and
@@ -988,10 +686,7 @@
char *buf,
uint32_t *bufsize)
{
- if ( gUseDyld3 )
- return dyld3::_NSGetExecutablePath(buf, bufsize);
-
- DYLD_NO_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static int (*p)(char *buf, uint32_t *bufsize) = NULL;
if(p == NULL)
@@ -999,14 +694,13 @@
return(p(buf, bufsize));
}
-#if DEPRECATED_APIS_SUPPORTED
void
_dyld_lookup_and_bind(
const char* symbol_name,
void** address,
NSModule* module)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(const char*, void** , NSModule*) = NULL;
if(p == NULL)
@@ -1021,7 +715,7 @@
void** address,
NSModule* module)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(const char*, const char*, void**, NSModule*) = NULL;
if(p == NULL)
@@ -1029,21 +723,19 @@
p(symbol_name, library_name_hint, address, module);
}
-#if OBSOLETE_DYLD_API
void
_dyld_lookup_and_bind_objc(
const char* symbol_name,
void** address,
NSModule* module)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_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(
@@ -1051,7 +743,7 @@
void** address,
NSModule* module)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(const char*, void**, NSModule*) = NULL;
if(p == NULL)
@@ -1063,14 +755,13 @@
_dyld_bind_fully_image_containing_address(
const void* address)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_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
/*
@@ -1083,12 +774,8 @@
_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;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
+ static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_register_func_for_add_image", (void**)&p);
@@ -1104,19 +791,14 @@
_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;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
+ static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = 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
@@ -1127,7 +809,7 @@
_dyld_register_func_for_link_module(
void (*func)(NSModule module))
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule module)) = NULL;
if(p == NULL)
@@ -1143,7 +825,7 @@
_dyld_register_func_for_unlink_module(
void (*func)(NSModule module))
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule module)) = NULL;
if(p == NULL)
@@ -1159,7 +841,7 @@
_dyld_register_func_for_replace_module(
void (*func)(NSModule oldmodule, NSModule newmodule))
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_WRITER_LOCK_THIS_BLOCK;
static void (*p)(void (*func)(NSModule oldmodule,
NSModule newmodule)) = NULL;
@@ -1180,7 +862,7 @@
void **objc_module,
unsigned long *size)
{
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static void (*p)(NSModule module,
void **objc_module,
unsigned long *size) = NULL;
@@ -1190,37 +872,52 @@
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__
+bool
+_dyld_present(
+void)
+{
+ // hmmm, this code is in libSystem.dylib, which is loaded by dyld...
+ return true;
+}
#endif
-#if DEPRECATED_APIS_SUPPORTED
-bool
-_dyld_present(void)
-{
- // this function exists for compatiblity only
- return true;
-}
-#endif
-
uint32_t
-_dyld_image_count(void)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_image_count();
-
+_dyld_image_count(
+void)
+{
DYLD_NO_LOCK_THIS_BLOCK;
- static uint32_t (*p)(void) = NULL;
-
+ static unsigned long (*p)(void) = NULL;
+
+ if(_dyld_present() == 0)
+ return(0);
if(p == NULL)
_dyld_func_lookup("__dyld_image_count", (void**)&p);
return(p());
}
const struct mach_header *
-_dyld_get_image_header(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_header(image_index);
-
+_dyld_get_image_header(
+uint32_t image_index)
+{
DYLD_NO_LOCK_THIS_BLOCK;
static struct mach_header * (*p)(uint32_t image_index) = NULL;
@@ -1230,11 +927,9 @@
}
intptr_t
-_dyld_get_image_vmaddr_slide(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_vmaddr_slide(image_index);
-
+_dyld_get_image_vmaddr_slide(
+uint32_t image_index)
+{
DYLD_NO_LOCK_THIS_BLOCK;
static unsigned long (*p)(uint32_t image_index) = NULL;
@@ -1244,11 +939,9 @@
}
const char*
-_dyld_get_image_name(uint32_t image_index)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_name(image_index);
-
+_dyld_get_image_name(
+uint32_t image_index)
+{
DYLD_NO_LOCK_THIS_BLOCK;
static const char* (*p)(uint32_t image_index) = NULL;
@@ -1257,22 +950,11 @@
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)
-{
- if ( gUseDyld3 )
- return dyld3::_dyld_image_containing_address(address);
-
- DYLD_LOCK_THIS_BLOCK;
+bool
+_dyld_image_containing_address(
+const void* address)
+{
+ DYLD_READER_LOCK_THIS_BLOCK;
static bool (*p)(const void*) = NULL;
if(p == NULL)
@@ -1284,10 +966,7 @@
_dyld_get_image_header_containing_address(
const void* address)
{
- if ( gUseDyld3 )
- return dyld3::_dyld_get_image_header_containing_address(address);
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static const struct mach_header * (*p)(const void*) = NULL;
if(p == NULL)
@@ -1295,9 +974,21 @@
return p(address);
}
-bool _dyld_launched_prebound(void)
-{
- DYLD_LOCK_THIS_BLOCK;
+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;
static bool (*p)(void) = NULL;
if(p == NULL)
@@ -1305,16 +996,16 @@
return(p());
}
-bool _dyld_all_twolevel_modules_prebound(void)
-{
- DYLD_LOCK_THIS_BLOCK;
+bool _dyld_all_twolevel_modules_prebound(
+void)
+{
+ DYLD_READER_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>
@@ -1322,35 +1013,27 @@
#include <pthread.h>
#include <stdlib.h>
#include <mach-o/dyld.h>
-#include "dyldLibSystemInterface.h"
-
+#include "dyldLock.h"
+#include "dyldLibSystemThreadHelpers.h"
// pthread key used to access per-thread dlerror message
static pthread_key_t dlerrorPerThreadKey;
-static bool dlerrorPerThreadKeyInitialized = false;
// data kept per-thread
struct dlerrorPerThreadData
{
- size_t sizeAllocated;
+ uint32_t sizeAllocated;
char message[1];
};
// function called by dyld to get buffer to store dlerror message
-static char* getPerThreadBufferFor_dlerror(size_t sizeRequired)
-{
- // ok to create key lazily because this function is called within dyld lock, so there is no race condition
- if (!dlerrorPerThreadKeyInitialized ) {
- // create key and tell pthread package to call free() on any data associated with key if thread dies
- pthread_key_create(&dlerrorPerThreadKey, &free);
- dlerrorPerThreadKeyInitialized = true;
- }
-
- const size_t size = (sizeRequired < 256) ? 256 : sizeRequired;
+static char* getPerThreadBufferFor_dlerror(uint32_t sizeRequired)
+{
+ const int size = (sizeRequired < 256) ? 256 : sizeRequired;
dlerrorPerThreadData* data = (dlerrorPerThreadData*)pthread_getspecific(dlerrorPerThreadKey);
if ( data == NULL ) {
//int mallocSize = offsetof(dlerrorPerThreadData, message[size]);
- const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
+ const int mallocSize = sizeof(dlerrorPerThreadData)+size;
data = (dlerrorPerThreadData*)malloc(mallocSize);
data->sizeAllocated = size;
pthread_setspecific(dlerrorPerThreadKey, data);
@@ -1358,7 +1041,7 @@
else if ( data->sizeAllocated < sizeRequired ) {
free(data);
//int mallocSize = offsetof(dlerrorPerThreadData, message[size]);
- const size_t mallocSize = sizeof(dlerrorPerThreadData)+size;
+ const int mallocSize = sizeof(dlerrorPerThreadData)+size;
data = (dlerrorPerThreadData*)malloc(mallocSize);
data->sizeAllocated = size;
pthread_setspecific(dlerrorPerThreadKey, data);
@@ -1366,130 +1049,37 @@
return data->message;
}
-// <rdar://problem/10595338> dlerror buffer leak
-// Only allocate buffer if an actual error message needs to be set
-static bool hasPerThreadBufferFor_dlerror()
-{
- if (!dlerrorPerThreadKeyInitialized )
- return false;
-
- return (pthread_getspecific(dlerrorPerThreadKey) != NULL);
-}
-
-#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;
+// that table passed to dyld containing thread helpers
+static dyld::ThreadingHelpers sThreadHelpers = { 1, &lockForLazyBinding, &unlockForLazyBinding, &getPerThreadBufferFor_dlerror };
+
//
// during initialization of libSystem this routine will run
-// and call dyld, registering the helper functions.
+// and call dyld, registering the threading helpers.
//
-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
+//
+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();
+
+
char* dlerror()
{
- if ( gUseDyld3 )
- return dyld3::dlerror();
-
- DYLD_LOCK_THIS_BLOCK;
+ DYLD_READER_LOCK_THIS_BLOCK;
static char* (*p)() = NULL;
if(p == NULL)
@@ -1497,561 +1087,47 @@
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)
{
- 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;
+ DYLD_WRITER_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 result;
+ return(p(handle));
}
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_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));
}
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
-
-
-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);
-}
+ 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));
+}
+
+
+
+
+