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--- dyld/dyld-97.1/src/dyldAPIsInLibSystem.cpp
+++ dyld/dyld-210.2.3/src/dyldAPIsInLibSystem.cpp
@@ -1,6 +1,6 @@
/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2004-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2004-2009 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
@@ -24,15 +24,48 @@
#include <stddef.h>
#include <string.h>
+#include <malloc/malloc.h>
+
#include <crt_externs.h>
+#include <Availability.h>
#include "mach-o/dyld.h"
#include "mach-o/dyld_priv.h"
#include "dyldLock.h"
-extern "C" int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
-
+extern "C" int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
+extern "C" void __cxa_finalize(const void *dso);
+
+
+#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_LOAD_UPWARD_DYLIB
+ #define LC_LOAD_UPWARD_DYLIB (0x23|LC_REQ_DYLD) /* load of dylib whose initializers run later */
+#endif
+
+#define DYLD_SHARED_CACHE_SUPPORT (__i386__ || __x86_64__ || __arm__)
+
+// deprecated APIs are still availble on Mac OS X, but not on iPhone OS
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ #define DEPRECATED_APIS_SUPPORTED 0
+#else
+ #define DEPRECATED_APIS_SUPPORTED 1
+#endif
/*
* names_match() takes an install_name from an LC_LOAD_DYLIB command and a
@@ -87,19 +120,22 @@
return(FALSE);
}
+#if DEPRECATED_APIS_SUPPORTED
+
void NSInstallLinkEditErrorHandlers(
const NSLinkEditErrorHandlers* handlers)
{
DYLD_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;
+ typedef void (*ucallback_t)(const char* symbol_name);
+ typedef NSModule (*mcallback_t)(NSSymbol s, NSModule old, NSModule newhandler);
+ typedef void (*lcallback_t)(NSLinkEditErrors c, int errorNumber,
+ const char* fileName, const char* errorString);
+ static void (*p)(ucallback_t undefined, mcallback_t multiple, lcallback_t linkEdit) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_install_handlers", (void**)&p);
- p(handlers->undefined, handlers->multiple, handlers->linkEdit);
+ mcallback_t m = handlers->multiple;
+ p(handlers->undefined, m, handlers->linkEdit);
}
const char*
@@ -294,6 +330,7 @@
_dyld_func_lookup("__dyld_NSAddImage", (void**)&p);
return(p(image_name, options));
}
+#endif // DEPRECATED_APIS_SUPPORTED
/*
* This routine returns the current version of the named shared library the
@@ -332,6 +369,7 @@
switch ( lc->cmd ) {
case LC_LOAD_DYLIB:
case LC_LOAD_WEAK_DYLIB:
+ case LC_LOAD_UPWARD_DYLIB:
dl = (struct dylib_command *)lc;
install_name = (char *)dl + dl->dylib.name.offset;
if(names_match(install_name, libraryName) == TRUE)
@@ -385,6 +423,120 @@
return(-1);
}
+
+/*
+ * Returns the sdk version (encode as nibble XXXX.YY.ZZ) the
+ * specified binary was built against.
+ *
+ * First looks for LC_VERSION_MIN_MACOSX/LC_VERSION_MIN_IPHONEOS
+ * 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)
+{
+#if __LP64__
+ const load_command* cmds = (load_command*)((char *)mh + sizeof(mach_header_64));
+#else
+ const load_command* cmds = (load_command*)((char *)mh + sizeof(mach_header));
+#endif
+ const version_min_command* versCmd;
+ const dylib_command* dylibCmd;
+ const load_command* cmd = cmds;
+ uint32_t libSystemVers = 0;
+ for(uint32_t i = 0; i < mh->ncmds; ++i) {
+ switch ( cmd->cmd ) {
+ case LC_VERSION_MIN_MACOSX:
+ case LC_VERSION_MIN_IPHONEOS:
+ versCmd = (version_min_command*)cmd;
+ if ( versCmd->sdk != 0 )
+ return versCmd->sdk; // found explicit SDK version
+ break;
+ case LC_LOAD_DYLIB:
+ case LC_LOAD_WEAK_DYLIB:
+ case LC_LOAD_UPWARD_DYLIB:
+ dylibCmd = (dylib_command*)cmd;
+ if ( strcmp((char*)dylibCmd + dylibCmd->dylib.name.offset, "/usr/lib/libSystem.B.dylib") == 0 )
+ libSystemVers = dylibCmd->dylib.current_version;
+ else if ( strcmp((char*)dylibCmd + dylibCmd->dylib.name.offset, "/usr/lib/libSystem.dylib") == 0 )
+ return 0x00040000; // all iOS simulator have same libSystem.dylib version
+ break;
+ }
+ cmd = (load_command*)((char *)cmd + cmd->cmdsize);
+ }
+
+ if ( libSystemVers != 0 ) {
+ // found linked libSystem.B.dylib version linked against
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ // convert libSystem.B.dylib version to iOS sdk version
+ if ( libSystemVers < 0x006F0010 ) // libSystem 111.0.16 in 3.0
+ return 0x00020000; // 2.0
+ else if ( libSystemVers < 0x006F0201 ) // libSystem 111.2.1 in 3.1
+ return 0x00030000; // 3.0
+ else if ( libSystemVers < 0x007D020B ) // libSystem 125.2.11 in 4.0
+ return 0x00030100; // 3.1
+ else if ( libSystemVers < 0x007D0400 ) // libSystem 125.4 in 4.1 and in 4.2
+ return 0x00040000; // 4.0
+ else if ( libSystemVers < 0x009F0000 ) // libSystem 159 in 4.3
+ return 0x00040100; // 4.1
+ else if ( libSystemVers < 0x00A10000 ) // libSystem 161 in 5.0
+ return 0x00040300; // 4.3
+ else
+ return 0x00050000;
+#else
+ // convert libSystem.B.dylib version to MacOSX sdk version
+ if ( libSystemVers < 0x006F0000 ) // libSystem 111 in 10.5
+ return 0x000A0400; // 10.4
+ else if ( libSystemVers < 0x007B0000 ) // libSystem 123 in 10.6
+ return 0x000A0500; // 10.5
+ else if ( libSystemVers < 0x009F0000 ) // libSystem 159 in 10.7
+ return 0x000A0600; // 10.6
+ else if ( libSystemVers < 0x00A10000 ) // libSystem 161 in 10.8
+ return 0x000A0700; // 10.7
+ else
+ return 0x000A0800; // 10.8
+#endif
+ }
+
+ return 0;
+}
+
+uint32_t dyld_get_program_sdk_version()
+{
+ return dyld_get_sdk_version((mach_header*)_NSGetMachExecuteHeader());
+}
+
+
+uint32_t dyld_get_min_os_version(const struct mach_header* mh)
+{
+#if __LP64__
+ const load_command* cmds = (load_command*)((char *)mh + sizeof(mach_header_64));
+#else
+ const load_command* cmds = (load_command*)((char *)mh + sizeof(mach_header));
+#endif
+ const version_min_command* versCmd;
+ const load_command* cmd = cmds;
+ for(uint32_t i = 0; i < mh->ncmds; ++i) {
+ switch ( cmd->cmd ) {
+ case LC_VERSION_MIN_MACOSX:
+ case LC_VERSION_MIN_IPHONEOS:
+ versCmd = (version_min_command*)cmd;
+ return versCmd->version; // found explicit min OS version
+ break;
+ }
+ cmd = (load_command*)((char *)cmd + cmd->cmdsize);
+ }
+ return 0;
+}
+
+
+uint32_t dyld_get_program_min_os_version()
+{
+ return dyld_get_min_os_version((mach_header*)_NSGetMachExecuteHeader());
+}
+
+
+#if DEPRECATED_APIS_SUPPORTED
/*
* NSCreateObjectFileImageFromFile() creates an NSObjectFileImage for the
* specified file name if the file is a correct Mach-O file that can be loaded
@@ -477,31 +629,6 @@
}
-/*
- * NSFindSectionAndOffsetInObjectFileImage() takes the specified imageOffset
- * into the specified ObjectFileImage and returns the segment/section name and
- * offset into that section of that imageOffset. Returns FALSE if the
- * imageOffset is not in any section. You can used the resulting sectionOffset
- * to index into the data returned by NSGetSectionDataInObjectFileImage.
- *
- * SPI: currently only used by ZeroLink to detect +load methods
- */
-bool
-NSFindSectionAndOffsetInObjectFileImage(
-NSObjectFileImage objectFileImage,
-unsigned long imageOffset,
-const char** segmentName, /* can be NULL */
-const char** sectionName, /* can be NULL */
-unsigned long* sectionOffset) /* can be NULL */
-{
- DYLD_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);
-}
/*
@@ -620,24 +747,6 @@
return p(objectFileImage, segmentName, sectionName, size);
}
-/*
- * NSHasModInitObjectFileImage() returns TRUE if the NSObjectFileImage has any
- * module initialization sections and FALSE it it does not.
- *
- * SPI: currently only used by ZeroLink to detect C++ initializers
- */
-bool
-NSHasModInitObjectFileImage(
-NSObjectFileImage objectFileImage)
-{
- DYLD_LOCK_THIS_BLOCK;
- static bool (*p)(NSObjectFileImage) = NULL;
-
- if(p == NULL)
- _dyld_func_lookup("__dyld_NSHasModInitObjectFileImage", (void**)&p);
-
- return p(objectFileImage);
-}
void
NSLinkEditError(
@@ -682,6 +791,9 @@
return(NULL);
}
#endif
+
+
+#endif // DEPRECATED_APIS_SUPPORTED
/*
*_NSGetExecutablePath copies the path of the executable into the buffer and
@@ -705,6 +817,7 @@
return(p(buf, bufsize));
}
+#if DEPRECATED_APIS_SUPPORTED
void
_dyld_lookup_and_bind(
const char* symbol_name,
@@ -775,6 +888,7 @@
_dyld_func_lookup("__dyld_bind_fully_image_containing_address", (void**)&p);
return p(address);
}
+#endif // DEPRECATED_APIS_SUPPORTED
/*
@@ -788,7 +902,8 @@
void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
{
DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = NULL;
+ typedef void (*callback_t)(const struct mach_header *mh, intptr_t vmaddr_slide);
+ static void (*p)(callback_t func) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_register_func_for_add_image", (void**)&p);
@@ -805,7 +920,8 @@
void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide))
{
DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide)) = NULL;
+ typedef void (*callback_t)(const struct mach_header *mh, intptr_t vmaddr_slide);
+ static void (*p)(callback_t func) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_register_func_for_remove_image", (void**)&p);
@@ -903,12 +1019,14 @@
}
#endif
+#if DEPRECATED_APIS_SUPPORTED
bool
_dyld_present(void)
{
// this function exists for compatiblity only
return true;
}
+#endif
uint32_t
_dyld_image_count(void)
@@ -953,6 +1071,18 @@
_dyld_func_lookup("__dyld_get_image_name", (void**)&p);
return(p(image_index));
}
+
+// SPI in Mac OS X 10.6
+intptr_t _dyld_get_image_slide(const struct mach_header* mh)
+{
+ 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)
@@ -981,13 +1111,15 @@
void (*monaddition)(char *lowpc, char *highpc))
{
DYLD_LOCK_THIS_BLOCK;
- static void (*p)(void (*monaddition)(char *lowpc, char *highpc)) = NULL;
+ typedef void (*monproc)(char *lowpc, char *highpc);
+ static void (*p)(monproc monaddition) = NULL;
if(p == NULL)
_dyld_func_lookup("__dyld_moninit", (void**)&p);
p(monaddition);
}
+#if DEPRECATED_APIS_SUPPORTED
bool _dyld_launched_prebound(void)
{
DYLD_LOCK_THIS_BLOCK;
@@ -1007,6 +1139,7 @@
_dyld_func_lookup("__dyld_all_twolevel_modules_prebound", (void**)&p);
return(p());
}
+#endif // DEPRECATED_APIS_SUPPORTED
#include <dlfcn.h>
@@ -1016,7 +1149,6 @@
#include <mach-o/dyld.h>
#include <servers/bootstrap.h>
#include "dyldLibSystemInterface.h"
-#include "dyld_shared_cache_user.h"
// pthread key used to access per-thread dlerror message
@@ -1061,61 +1193,42 @@
}
-
-static bool get_update_dyld_shared_cache_bootstrap_port(mach_port_t& mp)
-{
- static bool found = false;
- static mach_port_t port;
- if ( found ) {
- mp = port;
- return true;
- }
- if ( bootstrap_look_up(bootstrap_port, "com.apple.dyld", &port) == KERN_SUCCESS ) {
- found = true;
- mp = port;
- return true;
- }
- return false;
-}
-
-#if __ppc__
- #define CUR_ARCH CPU_TYPE_POWERPC
-#elif __ppc64__
- #define CUR_ARCH CPU_TYPE_POWERPC64
-#elif __i386__
- #define CUR_ARCH CPU_TYPE_I386
-#elif __x86_64__
- #define CUR_ARCH CPU_TYPE_X86_64
-#endif
-
+#if DYLD_SHARED_CACHE_SUPPORT
static void shared_cache_missing()
{
- mach_port_t mp;
- if ( get_update_dyld_shared_cache_bootstrap_port(mp) )
- dyld_shared_cache_missing(mp, CUR_ARCH, 0);
+ // leave until dyld's that might call this are rare
}
static void shared_cache_out_of_date()
{
- mach_port_t mp;
- if ( get_update_dyld_shared_cache_bootstrap_port(mp) )
- dyld_shared_cache_out_of_date(mp, CUR_ARCH, 0);
-}
-
-
-
-// that table passed to dyld containing thread helpers
-static dyld::LibSystemHelpers sHelpers = { 4, &dyldGlobalLockAcquire, &dyldGlobalLockRelease,
+ // leave until dyld's that might call this are rare
+}
+#endif // DYLD_SHARED_CACHE_SUPPORT
+
+extern void* start;
+
+// the table passed to dyld containing thread helpers
+static dyld::LibSystemHelpers sHelpers = { 9, &dyldGlobalLockAcquire, &dyldGlobalLockRelease,
&getPerThreadBufferFor_dlerror, &malloc, &free, &__cxa_atexit,
+ #if DYLD_SHARED_CACHE_SUPPORT
&shared_cache_missing, &shared_cache_out_of_date,
- NULL, NULL };
+ #else
+ NULL, NULL,
+ #endif
+ NULL, NULL,
+ &pthread_key_create, &pthread_setspecific,
+ &malloc_size,
+ &pthread_getspecific,
+ &__cxa_finalize,
+ &start};
//
// during initialization of libSystem this routine will run
// and call dyld, registering the helper functions.
//
-extern "C" void _dyld_initializer() __attribute__((visibility("hidden")));
+extern "C" void tlv_initializer();
+extern "C" void _dyld_initializer();
void _dyld_initializer()
{
DYLD_LOCK_INITIALIZER;
@@ -1125,6 +1238,8 @@
_dyld_func_lookup("__dyld_register_thread_helpers", (void**)&p);
if(p != NULL)
p(&sHelpers);
+
+ tlv_initializer();
}
@@ -1208,6 +1323,77 @@
}
-
-
-
+const struct dyld_all_image_infos* _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 !__arm__
+bool _dyld_find_unwind_sections(void* addr, dyld_unwind_sections* 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__
+__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)
+{
+ 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);
+}
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+bool 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();
+}
+#endif
+
+
+// SPI called __fork
+void _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();
+}
+
+
+
+