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--- dyld/dyld-640.2/launch-cache/dyld_shared_cache_util.cpp
+++ dyld/dyld-733.8/launch-cache/dyld_shared_cache_util.cpp
@@ -1,16 +1,16 @@
-/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
* Copyright (c) 2009-2012 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -18,7 +18,7 @@
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_LICENSE_HEADER_END@
*/
@@ -34,73 +34,30 @@
#include <sys/syslimits.h>
#include <mach-o/arch.h>
#include <mach-o/loader.h>
-#include <mach-o/dyld.h>
#include <mach-o/dyld_priv.h>
+#include <bootstrap.h>
#include <mach/mach.h>
+#include <dispatch/dispatch.h>
+
+#include <TargetConditionals.h>
#include <map>
#include <vector>
+#include <iostream>
#include "DyldSharedCache.h"
-
-#include "dsc_iterator.h"
-#include "dsc_extractor.h"
-#include "dyld_cache_format.h"
-#include "Architectures.hpp"
-#include "MachOFileAbstraction.hpp"
-#include "CacheFileAbstraction.hpp"
#include "Trie.hpp"
-#include "SupportedArchs.h"
-
-enum Mode {
- modeNone,
- modeList,
- modeMap,
- modeDependencies,
- modeSlideInfo,
- modeVerboseSlideInfo,
- modeAcceleratorInfo,
- modeTextInfo,
- modeLinkEdit,
- modeLocalSymbols,
- modeStrings,
- modeInfo,
- modeSize,
- modeExtract
-};
-
-struct Options {
- Mode mode;
- const char* dependentsOfPath;
- const void* mappedCache;
- const char* extractionDir;
- bool printUUIDs;
- bool printVMAddrs;
- bool printDylibVersions;
- bool printInodes;
-};
-
-struct TextInfo {
- uint64_t textSize;
- const char* path;
-};
-
-struct TextInfoSorter {
- bool operator()(const TextInfo& left, const TextInfo& right) {
- return (left.textSize > right.textSize);
- }
-};
-
-struct Results {
- std::map<uint32_t, const char*> pageToContent;
- uint64_t linkeditBase;
- bool dependentTargetFound;
- std::vector<TextInfo> textSegments;
-};
-
+
+#include "objc-shared-cache.h"
+
+#if TARGET_OS_OSX
+#define DSC_BUNDLE_REL_PATH "../../lib/dsc_extractor.bundle"
+#else
+#define DSC_BUNDLE_REL_PATH "../lib/dsc_extractor.bundle"
+#endif
// mmap() an shared cache file read/only but laid out like it would be at runtime
-static const DyldSharedCache* mapCacheFile(const char* path, size_t& cacheLength)
+static const DyldSharedCache* mapCacheFile(const char* path)
{
struct stat statbuf;
if ( ::stat(path, &statbuf) ) {
@@ -139,278 +96,71 @@
}
::close(cache_fd);
- cacheLength = statbuf.st_size;
-
return (DyldSharedCache*)result;
}
+enum Mode {
+ modeNone,
+ modeList,
+ modeMap,
+ modeDependencies,
+ modeSlideInfo,
+ modeVerboseSlideInfo,
+ modeAcceleratorInfo,
+ modeTextInfo,
+ modeLinkEdit,
+ modeLocalSymbols,
+ modeJSONMap,
+ modeJSONDependents,
+ modeSectionSizes,
+ modeStrings,
+ modeInfo,
+ modeSize,
+ modeObjCProtocols,
+ modeExtract
+};
+
+struct Options {
+ Mode mode;
+ const char* dependentsOfPath;
+ const char* extractionDir;
+ bool printUUIDs;
+ bool printVMAddrs;
+ bool printDylibVersions;
+ bool printInodes;
+};
void usage() {
- fprintf(stderr, "Usage: dyld_shared_cache_util -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit | -map | -slide_info | -verbose_slide_info | -info | -extract <dylib-dir> [ shared-cache-file ] \n");
+ fprintf(stderr, "Usage: dyld_shared_cache_util -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit | -map | -slide_info | -verbose_slide_info | -info | -extract <dylib-dir> [ shared-cache-file ] \n");
}
-#if __x86_64__
-static bool isHaswell()
-{
- // check system is capable of running x86_64h code
- struct host_basic_info info;
- mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
- mach_port_t hostPort = mach_host_self();
- kern_return_t result = host_info(hostPort, HOST_BASIC_INFO, (host_info_t)&info, &count);
- mach_port_deallocate(mach_task_self(), hostPort);
- if ( result != KERN_SUCCESS )
- return false;
- return ( info.cpu_subtype == CPU_SUBTYPE_X86_64_H );
+static void checkMode(Mode mode) {
+ if ( mode != modeNone ) {
+ fprintf(stderr, "Error: select one of: -list, -dependents, -info, -slide_info, -verbose_slide_info, -linkedit, -map, -extract, or -size\n");
+ usage();
+ exit(1);
+ }
}
-#endif
-
-/*
- * Get the path to the native shared cache for this host
- */
-static const char* default_shared_cache_path() {
-#if __i386__
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "i386";
-#elif __x86_64__
- if ( isHaswell() )
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "x86_64h";
- else
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "x86_64";
-#elif __ARM_ARCH_5TEJ__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv5";
-#elif __ARM_ARCH_6K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv6";
-#elif __ARM_ARCH_7K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7k";
-#elif __ARM_ARCH_7A__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7";
-#elif __ARM_ARCH_7F__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7f";
-#elif __ARM_ARCH_7S__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7s";
-#elif __ARM64_ARCH_8_32__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "arm64_32";
-#elif __arm64e__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "arm64e";
-#elif __arm64__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "arm64";
-#else
- #error unsupported architecture
-#endif
+
+static bool isAlias(const char* path, const DyldSharedCache* dyldCache) {
+ const dyld_cache_header* header = &dyldCache->header;
+ const dyld_cache_mapping_info* mappings = (const dyld_cache_mapping_info*)((char*)dyldCache + header->mappingOffset);
+ const dyld_cache_mapping_info* textMapping = &mappings[0];
+ // paths for aliases are store between cache header and first segment
+ return path < (char*)textMapping;
}
-typedef void (*segment_callback_t)(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results);
-
-
-
-/*
- * List dependencies from the mach-o header at headerAddr
- * in the same format as 'otool -L'
- */
-template <typename A>
-void print_dependencies(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results) {
- typedef typename A::P P;
- typedef typename A::P::E E;
-
- if ( strcmp(options.dependentsOfPath, dylibInfo->path) != 0 )
- return;
- if ( strcmp(segInfo->name, "__TEXT") != 0 )
- return;
-
- const macho_dylib_command<P>* dylib_cmd;
- const macho_header<P>* mh = (const macho_header<P>*)dylibInfo->machHeader;
- const macho_load_command<P>* const cmds = (macho_load_command<P>*)((uintptr_t)dylibInfo->machHeader + sizeof(macho_header<P>));
- const uint32_t cmd_count = mh->ncmds();
- const macho_load_command<P>* cmd = cmds;
- for (uint32_t i = 0; i < cmd_count; ++i) {
- switch ( cmd->cmd() ) {
- case LC_LOAD_DYLIB:
- case LC_ID_DYLIB:
- case LC_REEXPORT_DYLIB:
- case LC_LOAD_WEAK_DYLIB:
- case LC_LOAD_UPWARD_DYLIB:
- dylib_cmd = (macho_dylib_command<P>*)cmd;
- if ( options.printDylibVersions ) {
- uint32_t compat_vers = dylib_cmd->compatibility_version();
- uint32_t current_vers = dylib_cmd->current_version();
- printf("\t%s", dylib_cmd->name());
- if ( compat_vers != 0xFFFFFFFF ) {
- printf("(compatibility version %u.%u.%u, current version %u.%u.%u)\n",
- (compat_vers >> 16),
- (compat_vers >> 8) & 0xff,
- (compat_vers) & 0xff,
- (current_vers >> 16),
- (current_vers >> 8) & 0xff,
- (current_vers) & 0xff);
- }
- else {
- printf("\n");
- }
- }
- else {
- printf("\t%s\n", dylib_cmd->name());
- }
- break;
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
- results.dependentTargetFound = true;
-}
-
-/*
- * Print out a dylib from the shared cache, optionally including the UUID or unslid load address
- */
-template <typename A>
-void print_list(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results)
-{
- if ( strcmp(segInfo->name, "__TEXT") != 0 )
- return;
-
- if ( options.printVMAddrs )
- printf("0x%08llX ", segInfo->address);
- if ( options.printInodes )
- printf("0x%08llX 0x%08llX ", dylibInfo->inode, dylibInfo->modTime);
- if ( options.printUUIDs ) {
- if ( dylibInfo->uuid != NULL ) {
- const uint8_t* uuid = (uint8_t*)dylibInfo->uuid;;
- printf("<%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X> ",
- uuid[0], uuid[1], uuid[2], uuid[3],
- uuid[4], uuid[5], uuid[6], uuid[7],
- uuid[8], uuid[9], uuid[10], uuid[11],
- uuid[12], uuid[13], uuid[14], uuid[15]);
- }
- else
- printf("< no uuid in dylib > ");
- }
- if ( dylibInfo->isAlias )
- printf("[alias] %s\n", dylibInfo->path);
- else
- printf("%s\n", dylibInfo->path);
-}
-
-
-template <typename A>
-void collect_size(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results)
-{
- if ( strcmp(segInfo->name, "__TEXT") != 0 )
- return;
- if ( dylibInfo->isAlias )
- return;
-
- TextInfo info;
- info.textSize = segInfo->fileSize;
- info.path = dylibInfo->path;
- results.textSegments.push_back(info);
-}
-
-
-
-
-static void add_linkedit(uint32_t pageStart, uint32_t pageEnd, const char* message, Results& results)
-{
- for (uint32_t p = pageStart; p <= pageEnd; p += 4096) {
- std::map<uint32_t, const char*>::iterator pos = results.pageToContent.find(p);
- if ( pos == results.pageToContent.end() ) {
- results.pageToContent[p] = strdup(message);
- }
- else {
- const char* oldMessage = pos->second;
- char* newMesssage;
- asprintf(&newMesssage, "%s, %s", oldMessage, message);
- results.pageToContent[p] = newMesssage;
- ::free((void*)oldMessage);
- }
- }
-}
-
-
-/*
- * get LINKEDIT info for dylib
- */
-template <typename A>
-void process_linkedit(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results) {
- typedef typename A::P P;
- typedef typename A::P::E E;
- // filter out symlinks
- if ( dylibInfo->isAlias )
- return;
- const macho_header<P>* mh = (const macho_header<P>*)dylibInfo->machHeader;
- uint32_t ncmds = mh->ncmds();
- const macho_load_command<P>* const cmds = (macho_load_command<P>*)((long)mh + sizeof(macho_header<P>));
- const macho_load_command<P>* cmd = cmds;
- for (uint32_t i = 0; i < ncmds; i++) {
- if ( cmd->cmd() == LC_DYLD_INFO_ONLY ) {
- macho_dyld_info_command<P>* dyldInfo = (macho_dyld_info_command<P>*)cmd;
- char message[1000];
- const char* shortName = strrchr(dylibInfo->path, '/') + 1;
- // add export trie info
- if ( dyldInfo->export_size() != 0 ) {
- //printf("export_off=0x%X\n", dyldInfo->export_off());
- uint32_t exportPageOffsetStart = dyldInfo->export_off() & (-4096);
- uint32_t exportPageOffsetEnd = (dyldInfo->export_off() + dyldInfo->export_size()) & (-4096);
- sprintf(message, "exports from %s", shortName);
- add_linkedit(exportPageOffsetStart, exportPageOffsetEnd, message, results);
- }
- // add binding info
- if ( dyldInfo->bind_size() != 0 ) {
- uint32_t bindPageOffsetStart = dyldInfo->bind_off() & (-4096);
- uint32_t bindPageOffsetEnd = (dyldInfo->bind_off() + dyldInfo->bind_size()) & (-4096);
- sprintf(message, "bindings from %s", shortName);
- add_linkedit(bindPageOffsetStart, bindPageOffsetEnd, message, results);
- }
- // add lazy binding info
- if ( dyldInfo->lazy_bind_size() != 0 ) {
- uint32_t lazybindPageOffsetStart = dyldInfo->lazy_bind_off() & (-4096);
- uint32_t lazybindPageOffsetEnd = (dyldInfo->lazy_bind_off() + dyldInfo->lazy_bind_size()) & (-4096);
- sprintf(message, "lazy bindings from %s", shortName);
- add_linkedit(lazybindPageOffsetStart, lazybindPageOffsetEnd, message, results);
- }
- // add weak binding info
- if ( dyldInfo->weak_bind_size() != 0 ) {
- uint32_t weakbindPageOffsetStart = dyldInfo->weak_bind_off() & (-4096);
- uint32_t weakbindPageOffsetEnd = (dyldInfo->weak_bind_off() + dyldInfo->weak_bind_size()) & (-4096);
- sprintf(message, "weak bindings from %s", shortName);
- add_linkedit(weakbindPageOffsetStart, weakbindPageOffsetEnd, message, results);
- }
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
-}
-
-
-/*
- * Print out a .map file similar to what update_dyld_shared_cache created when the cache file was built
- */
-template <typename A>
-void print_map(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo, const Options& options, Results& results) {
- if ( !dylibInfo->isAlias )
- printf("0x%08llX - 0x%08llX %s %s\n", segInfo->address, segInfo->address + segInfo->fileSize, segInfo->name, dylibInfo->path);
-}
-
-
-static void checkMode(Mode mode) {
- if ( mode != modeNone ) {
- fprintf(stderr, "Error: select one of: -list, -dependents, -info, -slide_info, -verbose_slide_info, -linkedit, -map, -extract, or -size\n");
- usage();
- exit(1);
- }
-}
-
int main (int argc, const char* argv[]) {
- const char* sharedCachePath = default_shared_cache_path();
-
- Options options;
- options.mode = modeNone;
+ const char* sharedCachePath = nullptr;
+
+ Options options;
+ options.mode = modeNone;
options.printUUIDs = false;
- options.printVMAddrs = false;
+ options.printVMAddrs = false;
options.printDylibVersions = false;
- options.printInodes = false;
+ options.printInodes = false;
options.dependentsOfPath = NULL;
options.extractionDir = NULL;
@@ -421,43 +171,43 @@
const char* opt = argv[i];
if (opt[0] == '-') {
if (strcmp(opt, "-list") == 0) {
- checkMode(options.mode);
- options.mode = modeList;
- }
- else if (strcmp(opt, "-dependents") == 0) {
- checkMode(options.mode);
- options.mode = modeDependencies;
- options.dependentsOfPath = argv[++i];
+ checkMode(options.mode);
+ options.mode = modeList;
+ }
+ else if (strcmp(opt, "-dependents") == 0) {
+ checkMode(options.mode);
+ options.mode = modeDependencies;
+ options.dependentsOfPath = argv[++i];
if ( i >= argc ) {
fprintf(stderr, "Error: option -depdendents requires an argument\n");
usage();
exit(1);
}
- }
- else if (strcmp(opt, "-linkedit") == 0) {
- checkMode(options.mode);
- options.mode = modeLinkEdit;
- }
- else if (strcmp(opt, "-info") == 0) {
- checkMode(options.mode);
- options.mode = modeInfo;
- }
- else if (strcmp(opt, "-slide_info") == 0) {
- checkMode(options.mode);
- options.mode = modeSlideInfo;
- }
+ }
+ else if (strcmp(opt, "-linkedit") == 0) {
+ checkMode(options.mode);
+ options.mode = modeLinkEdit;
+ }
+ else if (strcmp(opt, "-info") == 0) {
+ checkMode(options.mode);
+ options.mode = modeInfo;
+ }
+ else if (strcmp(opt, "-slide_info") == 0) {
+ checkMode(options.mode);
+ options.mode = modeSlideInfo;
+ }
else if (strcmp(opt, "-verbose_slide_info") == 0) {
checkMode(options.mode);
options.mode = modeVerboseSlideInfo;
}
- else if (strcmp(opt, "-accelerator_info") == 0) {
- checkMode(options.mode);
- options.mode = modeAcceleratorInfo;
- }
- else if (strcmp(opt, "-text_info") == 0) {
- checkMode(options.mode);
- options.mode = modeTextInfo;
- }
+ else if (strcmp(opt, "-accelerator_info") == 0) {
+ checkMode(options.mode);
+ options.mode = modeAcceleratorInfo;
+ }
+ else if (strcmp(opt, "-text_info") == 0) {
+ checkMode(options.mode);
+ options.mode = modeTextInfo;
+ }
else if (strcmp(opt, "-local_symbols") == 0) {
checkMode(options.mode);
options.mode = modeLocalSymbols;
@@ -468,136 +218,151 @@
options.mode = modeStrings;
printStrings = true;
}
+ else if (strcmp(opt, "-sections") == 0) {
+ checkMode(options.mode);
+ options.mode = modeSectionSizes;
+ }
else if (strcmp(opt, "-exports") == 0) {
if (options.mode != modeStrings)
checkMode(options.mode);
options.mode = modeStrings;
printExports = true;
}
- else if (strcmp(opt, "-map") == 0) {
- checkMode(options.mode);
- options.mode = modeMap;
- }
- else if (strcmp(opt, "-size") == 0) {
- checkMode(options.mode);
- options.mode = modeSize;
- }
- else if (strcmp(opt, "-extract") == 0) {
- checkMode(options.mode);
- options.mode = modeExtract;
- options.extractionDir = argv[++i];
+ else if (strcmp(opt, "-map") == 0) {
+ checkMode(options.mode);
+ options.mode = modeMap;
+ }
+ else if (strcmp(opt, "-json-map") == 0) {
+ checkMode(options.mode);
+ options.mode = modeJSONMap;
+ }
+ else if (strcmp(opt, "-json-dependents") == 0) {
+ checkMode(options.mode);
+ options.mode = modeJSONDependents;
+ }
+ else if (strcmp(opt, "-size") == 0) {
+ checkMode(options.mode);
+ options.mode = modeSize;
+ }
+ else if (strcmp(opt, "-objc-protocols") == 0) {
+ checkMode(options.mode);
+ options.mode = modeObjCProtocols;
+ }
+ else if (strcmp(opt, "-extract") == 0) {
+ checkMode(options.mode);
+ options.mode = modeExtract;
+ options.extractionDir = argv[++i];
if ( i >= argc ) {
fprintf(stderr, "Error: option -extract requires a directory argument\n");
usage();
exit(1);
}
- }
- else if (strcmp(opt, "-uuid") == 0) {
+ }
+ else if (strcmp(opt, "-uuid") == 0) {
options.printUUIDs = true;
- }
- else if (strcmp(opt, "-inode") == 0) {
+ }
+ else if (strcmp(opt, "-inode") == 0) {
options.printInodes = true;
- }
- else if (strcmp(opt, "-versions") == 0) {
+ }
+ else if (strcmp(opt, "-versions") == 0) {
options.printDylibVersions = true;
- }
- else if (strcmp(opt, "-vmaddr") == 0) {
- options.printVMAddrs = true;
- }
- else {
+ }
+ else if (strcmp(opt, "-vmaddr") == 0) {
+ options.printVMAddrs = true;
+ }
+ else {
fprintf(stderr, "Error: unrecognized option %s\n", opt);
usage();
exit(1);
}
- }
- else {
+ }
+ else {
sharedCachePath = opt;
}
}
-
- if ( options.mode == modeNone ) {
- fprintf(stderr, "Error: select one of -list, -dependents, -info, -linkedit, or -map\n");
- usage();
- exit(1);
- }
-
- if ( options.mode != modeSlideInfo && options.mode != modeVerboseSlideInfo ) {
- if ( options.printUUIDs && (options.mode != modeList) )
- fprintf(stderr, "Warning: -uuid option ignored outside of -list mode\n");
-
- if ( options.printVMAddrs && (options.mode != modeList) )
- fprintf(stderr, "Warning: -vmaddr option ignored outside of -list mode\n");
-
- if ( options.printDylibVersions && (options.mode != modeDependencies) )
- fprintf(stderr, "Warning: -versions option ignored outside of -dependents mode\n");
-
- if ( (options.mode == modeDependencies) && (options.dependentsOfPath == NULL) ) {
- fprintf(stderr, "Error: -dependents given, but no dylib path specified\n");
- usage();
- exit(1);
- }
- }
-
+
+ if ( options.mode == modeNone ) {
+ fprintf(stderr, "Error: select one of -list, -dependents, -info, -linkedit, or -map\n");
+ usage();
+ exit(1);
+ }
+
+ if ( options.mode != modeSlideInfo && options.mode != modeVerboseSlideInfo ) {
+ if ( options.printUUIDs && (options.mode != modeList) )
+ fprintf(stderr, "Warning: -uuid option ignored outside of -list mode\n");
+
+ if ( options.printVMAddrs && (options.mode != modeList) )
+ fprintf(stderr, "Warning: -vmaddr option ignored outside of -list mode\n");
+
+ if ( options.printDylibVersions && (options.mode != modeDependencies) )
+ fprintf(stderr, "Warning: -versions option ignored outside of -dependents mode\n");
+
+ if ( (options.mode == modeDependencies) && (options.dependentsOfPath == NULL) ) {
+ fprintf(stderr, "Error: -dependents given, but no dylib path specified\n");
+ usage();
+ exit(1);
+ }
+ }
+
const DyldSharedCache* dyldCache = nullptr;
- bool dyldCacheIsLive = true;
- size_t cacheLength = 0;
if ( sharedCachePath != nullptr ) {
- dyldCache = mapCacheFile(sharedCachePath, cacheLength);
- dyldCacheIsLive = false;
+ dyldCache = mapCacheFile(sharedCachePath);
+ // mapCacheFile prints an error if something goes wrong, so just return in that case.
+ if ( dyldCache == nullptr )
+ return 1;
}
else {
-#if __MAC_OS_X_VERSION_MIN_REQUIRED && (__MAC_OS_X_VERSION_MIN_REQUIRED < 101300)
- fprintf(stderr, "this tool needs to run on macOS 10.13 or later\n");
- return 1;
-#else
+#if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || (__MAC_OS_X_VERSION_MIN_REQUIRED >= 101300)
+ size_t cacheLength;
dyldCache = (DyldSharedCache*)_dyld_get_shared_cache_range(&cacheLength);
#endif
- }
-
- options.mappedCache = dyldCache;
-
- if ( options.mode == modeSlideInfo || options.mode == modeVerboseSlideInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- if ( header->slideInfoOffset() == 0 ) {
- fprintf(stderr, "Error: dyld shared cache does not contain slide info\n");
- exit(1);
- }
- const dyldCacheFileMapping<LittleEndian>* mappings = (dyldCacheFileMapping<LittleEndian>*)((char*)options.mappedCache + header->mappingOffset());
- const dyldCacheFileMapping<LittleEndian>* textMapping = &mappings[0];
- const dyldCacheFileMapping<LittleEndian>* dataMapping = &mappings[1];
- const dyldCacheFileMapping<LittleEndian>* linkEditMapping = &mappings[2];
- uint64_t dataStartAddress = dataMapping->address();
- uint64_t dataSize = dataMapping->size();
- uint64_t slideInfoMappedOffset = (header->slideInfoOffset()-linkEditMapping->file_offset()) + (linkEditMapping->address() - textMapping->address());
- const dyldCacheSlideInfo<LittleEndian>* slideInfoHeader = (dyldCacheSlideInfo<LittleEndian>*)((char*)options.mappedCache+slideInfoMappedOffset);
- printf("slide info version=%d\n", slideInfoHeader->version());
- if ( slideInfoHeader->version() == 1 ) {
- printf("toc_count=%d, data page count=%lld\n", slideInfoHeader->toc_count(), dataSize/4096);
- const dyldCacheSlideInfoEntry* entries = (dyldCacheSlideInfoEntry*)((char*)slideInfoHeader + slideInfoHeader->entries_offset());
- for(int i=0; i < slideInfoHeader->toc_count(); ++i) {
- printf("0x%08llX: [% 5d,% 5d] ", dataStartAddress + i*4096, i, slideInfoHeader->toc(i));
- const dyldCacheSlideInfoEntry* entry = &entries[slideInfoHeader->toc(i)];
- for(int j=0; j < slideInfoHeader->entries_size(); ++j)
- printf("%02X", entry->bits[j]);
- printf("\n");
- }
- }
- else if ( slideInfoHeader->version() == 2 ) {
- const dyldCacheSlideInfo2<LittleEndian>* slideInfo = (dyldCacheSlideInfo2<LittleEndian>*)(slideInfoHeader);
- printf("page_size=%d\n", slideInfo->page_size());
- printf("delta_mask=0x%016llX\n", slideInfo->delta_mask());
- printf("value_add=0x%016llX\n", slideInfo->value_add());
- printf("page_starts_count=%d, page_extras_count=%d\n", slideInfo->page_starts_count(), slideInfo->page_extras_count());
- const uint16_t* starts = (uint16_t* )((char*)slideInfo + slideInfo->page_starts_offset());
- const uint16_t* extras = (uint16_t* )((char*)slideInfo + slideInfo->page_extras_offset());
- for (int i=0; i < slideInfo->page_starts_count(); ++i) {
- const uint16_t start = starts[i];
+ if (dyldCache == nullptr) {
+ fprintf(stderr, "Could not get in-memory shared cache\n");
+ return 1;
+ }
+ }
+
+ if ( options.mode == modeSlideInfo || options.mode == modeVerboseSlideInfo ) {
+ const dyld_cache_header* header = &dyldCache->header;
+ if ( header->slideInfoOffset == 0 ) {
+ fprintf(stderr, "Error: dyld shared cache does not contain slide info\n");
+ exit(1);
+ }
+ const dyld_cache_mapping_info* mappings = (const dyld_cache_mapping_info*)((char*)dyldCache + header->mappingOffset);
+ const dyld_cache_mapping_info* dataMapping = &mappings[1];
+ uint64_t dataStartAddress = dataMapping->address;
+ uint64_t dataSize = dataMapping->size;
+
+ const dyld_cache_slide_info* slideInfoHeader = dyldCache->slideInfo();
+ printf("slide info version=%d\n", slideInfoHeader->version);
+ if ( slideInfoHeader->version == 1 ) {
+ printf("toc_count=%d, data page count=%lld\n", slideInfoHeader->toc_count, dataSize/4096);
+ const dyld_cache_slide_info_entry* entries = (dyld_cache_slide_info_entry*)((char*)slideInfoHeader + slideInfoHeader->entries_offset);
+ const uint16_t* tocs = (uint16_t*)((char*)slideInfoHeader + slideInfoHeader->toc_offset);
+ for(int i=0; i < slideInfoHeader->toc_count; ++i) {
+ printf("0x%08llX: [% 5d,% 5d] ", dataStartAddress + i*4096, i, tocs[i]);
+ const dyld_cache_slide_info_entry* entry = &entries[tocs[i]];
+ for(int j=0; j < slideInfoHeader->entries_size; ++j)
+ printf("%02X", entry->bits[j]);
+ printf("\n");
+ }
+ }
+ else if ( slideInfoHeader->version == 2 ) {
+ const dyld_cache_slide_info2* slideInfo = (dyld_cache_slide_info2*)(slideInfoHeader);
+ printf("page_size=%d\n", slideInfo->page_size);
+ printf("delta_mask=0x%016llX\n", slideInfo->delta_mask);
+ printf("value_add=0x%016llX\n", slideInfo->value_add);
+ printf("page_starts_count=%d, page_extras_count=%d\n", slideInfo->page_starts_count, slideInfo->page_extras_count);
+ const uint16_t* starts = (uint16_t* )((char*)slideInfo + slideInfo->page_starts_offset);
+ const uint16_t* extras = (uint16_t* )((char*)slideInfo + slideInfo->page_extras_offset);
+ for (int i=0; i < slideInfo->page_starts_count; ++i) {
+ const uint16_t start = starts[i];
auto rebaseChain = [&](uint8_t* pageContent, uint16_t startOffset)
{
uintptr_t slideAmount = 0;
- const uintptr_t deltaMask = (uintptr_t)(slideInfo->delta_mask());
+ const uintptr_t deltaMask = (uintptr_t)(slideInfo->delta_mask);
const uintptr_t valueMask = ~deltaMask;
- const uintptr_t valueAdd = (uintptr_t)(slideInfo->value_add());
+ const uintptr_t valueAdd = (uintptr_t)(slideInfo->value_add);
const unsigned deltaShift = __builtin_ctzll(deltaMask) - 2;
uint32_t pageOffset = startOffset;
@@ -611,78 +376,83 @@
value += valueAdd;
value += slideAmount;
}
- printf(" [% 5d + 0x%04llX]: 0x%016llX\n", i, (uint64_t)(pageOffset), (uint64_t)rawValue);
+ printf(" [% 5d + 0x%04llX]: 0x%016llX = 0x%016llX\n", i, (uint64_t)(pageOffset), (uint64_t)rawValue, (uint64_t)value);
pageOffset += delta;
}
};
- const uint8_t* dataPagesStart = (uint8_t*)((char*)options.mappedCache + dataMapping->file_offset());
- if ( start == DYLD_CACHE_SLIDE_PAGE_ATTR_NO_REBASE ) {
- printf("page[% 5d]: no rebasing\n", i);
- }
- else if ( start & DYLD_CACHE_SLIDE_PAGE_ATTR_EXTRA ) {
- printf("page[% 5d]: ", i);
- int j=(start & 0x3FFF);
- bool done = false;
- do {
- uint16_t aStart = extras[j];
- printf("start=0x%04X ", aStart & 0x3FFF);
+ const uint8_t* dataPagesStart = dyldCache->dataRegionStart();
+ if ( start == DYLD_CACHE_SLIDE_PAGE_ATTR_NO_REBASE ) {
+ printf("page[% 5d]: no rebasing\n", i);
+ }
+ else if ( start & DYLD_CACHE_SLIDE_PAGE_ATTR_EXTRA ) {
+ printf("page[% 5d]: ", i);
+ int j=(start & 0x3FFF);
+ bool done = false;
+ do {
+ uint16_t aStart = extras[j];
+ printf("start=0x%04X ", aStart & 0x3FFF);
if ( options.mode == modeVerboseSlideInfo ) {
- uint8_t* page = (uint8_t*)(long)(dataPagesStart + (slideInfo->page_size()*i));
+ uint8_t* page = (uint8_t*)(long)(dataPagesStart + (slideInfo->page_size*i));
uint16_t pageStartOffset = (aStart & 0x3FFF)*4;
rebaseChain(page, pageStartOffset);
}
- done = (extras[j] & DYLD_CACHE_SLIDE_PAGE_ATTR_END);
- ++j;
- } while ( !done );
- printf("\n");
- }
- else {
- printf("page[% 5d]: start=0x%04X\n", i, starts[i]);
+ done = (extras[j] & DYLD_CACHE_SLIDE_PAGE_ATTR_END);
+ ++j;
+ } while ( !done );
+ printf("\n");
+ }
+ else {
+ printf("page[% 5d]: start=0x%04X\n", i, starts[i]);
if ( options.mode == modeVerboseSlideInfo ) {
- uint8_t* page = (uint8_t*)(long)(dataPagesStart + (slideInfo->page_size()*i));
+ uint8_t* page = (uint8_t*)(long)(dataPagesStart + (slideInfo->page_size*i));
uint16_t pageStartOffset = start*4;
rebaseChain(page, pageStartOffset);
}
- }
- }
- }
- else if ( slideInfoHeader->version() == 3 ) {
- const dyldCacheSlideInfo3<LittleEndian>* slideInfo = (dyldCacheSlideInfo3<LittleEndian>*)(slideInfoHeader);
- printf("page_size=%d\n", slideInfo->page_size());
- printf("page_starts_count=%d\n", slideInfo->page_starts_count());
- printf("auth_value_add=0x%016llX\n", slideInfo->auth_value_add());
- const uint8_t* dataSegmentStart = (uint8_t*)((char*)options.mappedCache + dataMapping->file_offset());
- for (int i=0; i < slideInfo->page_starts_count(); ++i) {
- const uint16_t start = slideInfo->page_starts(i);
- if ( start == 0xFFFF ) {
+ }
+ }
+ }
+ else if ( slideInfoHeader->version == 3 ) {
+ const dyld_cache_slide_info3* slideInfo = (dyld_cache_slide_info3*)(slideInfoHeader);
+ printf("page_size=%d\n", slideInfo->page_size);
+ printf("page_starts_count=%d\n", slideInfo->page_starts_count);
+ printf("auth_value_add=0x%016llX\n", slideInfo->auth_value_add);
+ const uintptr_t authValueAdd = (uintptr_t)(slideInfo->auth_value_add);
+ const uint8_t* dataSegmentStart = dyldCache->dataRegionStart();
+ for (int i=0; i < slideInfo->page_starts_count; ++i) {
+ uint16_t delta = slideInfo->page_starts[i];
+ if ( delta == DYLD_CACHE_SLIDE_V3_PAGE_ATTR_NO_REBASE ) {
printf("page[% 5d]: no rebasing\n", i);
- }
- else {
- printf("page[% 5d]: start=0x%04X\n", i, start);
- if ( options.mode == modeVerboseSlideInfo ) {
- typedef Pointer64<LittleEndian> P;
- typedef typename P::uint_t pint_t;
- const uint8_t* pageStart = dataSegmentStart + (i * slideInfo->page_size());
- pint_t delta = start;
- const uint8_t* rebaseLocation = pageStart;
- do {
- rebaseLocation += delta;
- pint_t value = (pint_t)P::getP(*(uint64_t*)rebaseLocation);
- delta = ( (value & 0x3FF8000000000000) >> 51) * sizeof(pint_t);
-
- // Regular pointer which needs to fit in 51-bits of value.
- // C++ RTTI uses the top bit, so we'll allow the whole top-byte
- // and the signed-extended bottom 43-bits to be fit in to 51-bits.
- uint64_t top8Bits = value & 0x007F80000000000ULL;
- uint64_t bottom43Bits = value & 0x000007FFFFFFFFFFULL;
- uint64_t targetValue = ( top8Bits << 13 ) | (((intptr_t)(bottom43Bits << 21) >> 21) & 0x00FFFFFFFFFFFFFF);
- printf(" [% 5d + 0x%04llX]: 0x%016llX\n", i, (uint64_t)(rebaseLocation - pageStart), targetValue);
- } while (delta != 0);
- }
- }
- }
- }
- else if ( slideInfoHeader->version() == 4 ) {
+ continue;
+ }
+
+ printf("page[% 5d]: start=0x%04X\n", i, delta);
+ if ( options.mode != modeVerboseSlideInfo )
+ continue;
+
+ delta = delta/sizeof(uint64_t); // initial offset is byte based
+ const uint8_t* pageStart = dataSegmentStart + (i * slideInfo->page_size);
+ const dyld_cache_slide_pointer3* loc = (dyld_cache_slide_pointer3*)pageStart;
+ do {
+ loc += delta;
+ delta = loc->plain.offsetToNextPointer;
+ dyld3::MachOLoaded::ChainedFixupPointerOnDisk ptr;
+ ptr.raw64 = *((uint64_t*)loc);
+ if ( loc->auth.authenticated ) {
+ uint64_t target = authValueAdd + loc->auth.offsetFromSharedCacheBase;
+ uint64_t targetValue = ptr.arm64e.signPointer((void*)loc, target);
+ printf(" [% 5d + 0x%04llX]: 0x%016llX (JOP: diversity %d, address %s, %s)\n",
+ i, (uint64_t)((const uint8_t*)loc - pageStart), targetValue,
+ ptr.arm64e.authBind.diversity, ptr.arm64e.authBind.addrDiv ? "true" : "false",
+ ptr.arm64e.keyName());
+ }
+ else {
+ uint64_t targetValue = ptr.arm64e.unpackTarget();
+ printf(" [% 5d + 0x%04llX]: 0x%016llX\n", i, (uint64_t)((const uint8_t*)loc - pageStart), targetValue);
+ }
+ } while (delta != 0);
+ }
+ }
+ else if ( slideInfoHeader->version == 4 ) {
const dyld_cache_slide_info4* slideInfo = (dyld_cache_slide_info4*)(slideInfoHeader);
printf("page_size=%d\n", slideInfo->page_size);
printf("delta_mask=0x%016llX\n", slideInfo->delta_mask);
@@ -722,7 +492,7 @@
pageOffset += delta;
}
};
- const uint8_t* dataPagesStart = (uint8_t*)((char*)options.mappedCache + dataMapping->file_offset());
+ const uint8_t* dataPagesStart = dyldCache->dataRegionStart();
if ( start == DYLD_CACHE_SLIDE4_PAGE_NO_REBASE ) {
printf("page[% 5d]: no rebasing\n", i);
}
@@ -753,24 +523,22 @@
}
}
}
- return 0;
- }
-
- if ( options.mode == modeInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- printf("uuid: ");
- if ( header->mappingOffset() >= 0x68 ) {
- const uint8_t* uuid = header->uuid();
- printf("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
- uuid[0], uuid[1], uuid[2], uuid[3],
- uuid[4], uuid[5], uuid[6], uuid[7],
- uuid[8], uuid[9], uuid[10], uuid[11],
- uuid[12], uuid[13], uuid[14], uuid[15]);
- }
- else {
- printf("n/a\n");
- }
- if ( header->mappingOffset() >= 0xE0 ) {
+ }
+ else if ( options.mode == modeInfo ) {
+ const dyld_cache_header* header = &dyldCache->header;
+ printf("uuid: ");
+ if ( header->mappingOffset >= 0x68 ) {
+ const uint8_t* uuid = header->uuid;
+ printf("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
+ uuid[0], uuid[1], uuid[2], uuid[3],
+ uuid[4], uuid[5], uuid[6], uuid[7],
+ uuid[8], uuid[9], uuid[10], uuid[11],
+ uuid[12], uuid[13], uuid[14], uuid[15]);
+ }
+ else {
+ printf("n/a\n");
+ }
+ if ( header->mappingOffset >= 0xE0 ) {
// HACK until this uses new header
uint32_t platform = *((uint32_t*)(((char*)header) + 0xD8));
uint32_t bitfield = *((uint32_t*)(((char*)header) + 0xDC));
@@ -806,185 +574,199 @@
}
printf("built by: %s\n", locallyBuiltCache ? "local machine" : "B&I");
}
- printf("image count: %u\n", header->imagesCount());
- if ( (header->mappingOffset() >= 0x78) && (header->branchPoolsOffset() != 0) ) {
- printf("branch pool count: %u\n", header->branchPoolsCount());
- }
- printf("mappings:\n");
- const dyldCacheFileMapping<LittleEndian>* mappings = (dyldCacheFileMapping<LittleEndian>*)((char*)options.mappedCache + header->mappingOffset());
- for (uint32_t i=0; i < header->mappingCount(); ++i) {
- if ( mappings[i].init_prot() & VM_PROT_EXECUTE )
- printf(" __TEXT %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
- mappings[i].size()/(1024*1024), mappings[i].file_offset(), mappings[i].file_offset() + mappings[i].size(),
- mappings[i].address(), mappings[i].address() + mappings[i].size());
- else if ( mappings[i]. init_prot() & VM_PROT_WRITE )
- printf(" __DATA %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
- mappings[i].size()/(1024*1024), mappings[i].file_offset(), mappings[i].file_offset() + mappings[i].size(),
- mappings[i].address(), mappings[i].address() + mappings[i].size());
- else if ( mappings[i].init_prot() & VM_PROT_READ )
- printf(" __LINKEDIT %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
- mappings[i].size()/(1024*1024), mappings[i].file_offset(), mappings[i].file_offset() + mappings[i].size(),
- mappings[i].address(), mappings[i].address() + mappings[i].size());
- }
- if ( header->codeSignatureOffset() != 0 ) {
- uint64_t size = cacheLength - header->codeSignatureOffset();
- uint64_t csAddr = mappings[header->mappingCount()-1].address() + mappings[header->mappingCount()-1].size();
- if ( size != 0 )
- printf(" code sign %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
- size/(1024*1024), header->codeSignatureOffset(), header->codeSignatureOffset() + size, csAddr, csAddr + size);
- }
- printf("slide info: %4lluKB, file offset: 0x%08llX -> 0x%08llX\n",
- header->slideInfoSize()/1024, header->slideInfoOffset(), header->slideInfoOffset() + header->slideInfoSize());
- if ( header->localSymbolsOffset() != 0 )
- printf("local symbols: %3lluMB, file offset: 0x%08llX -> 0x%08llX\n",
- header->localSymbolsSize()/(1024*1024), header->localSymbolsOffset(), header->localSymbolsOffset() + header->localSymbolsSize());
- if ( (header->mappingOffset() >= 0x78) && (header->accelerateInfoSize() != 0) )
- printf("accelerate tab: %3lluKB, address: 0x%08llX -> 0x%08llX\n",
- header->accelerateInfoSize()/1024, header->accelerateInfoAddr(), header->accelerateInfoAddr() + header->accelerateInfoSize());
- }
- else if ( options.mode == modeAcceleratorInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- if ( (header->mappingOffset() < sizeof(dyldCacheHeader<LittleEndian>)) || (header->accelerateInfoSize() == 0) ) {
- printf("no accelerator info\n");
- }
- else {
- const dyldCacheFileMapping<LittleEndian>* mappings = (dyldCacheFileMapping<LittleEndian>*)((char*)options.mappedCache + header->mappingOffset());
- uint64_t aiAddr = header->accelerateInfoAddr();
- dyldCacheAcceleratorInfo<LittleEndian>* accelInfo = NULL;
- for (uint32_t i=0; i < header->mappingCount(); ++i) {
- if ( (mappings[i].address() <= aiAddr) && (aiAddr < mappings[i].address()+mappings[i].size()) ) {
- uint64_t offset = aiAddr - mappings[i].address() + mappings[i].file_offset();
- accelInfo = (dyldCacheAcceleratorInfo<LittleEndian>*)((uint8_t*)options.mappedCache + offset);
- }
- }
- if ( accelInfo == NULL ) {
- printf("accelerator info not in any mapped range\n");
- }
- else {
- const dyldCacheImageInfo<LittleEndian>* images = (dyldCacheImageInfo<LittleEndian>*)((char*)options.mappedCache + header->imagesOffset());
- const dyldCacheImageInfoExtra<LittleEndian>* imagesExtra = (dyldCacheImageInfoExtra<LittleEndian>*)((char*)accelInfo + accelInfo->imagesExtrasOffset());
- const uint16_t* dependencyArray = (uint16_t*)((char*)accelInfo + accelInfo->depListOffset());
- const uint16_t* reExportArray = (uint16_t*)((char*)accelInfo + accelInfo->reExportListOffset());
- printf("extra image info (count=%u):\n", accelInfo->imageExtrasCount());
- for (uint32_t i=0; i < accelInfo->imageExtrasCount(); ++i) {
- printf(" image[%3u] %s:\n", i, (char*)options.mappedCache +images[i].pathFileOffset());
- printf(" exports trie: addr=0x%llX, size=0x%08X\n", imagesExtra[i].exportsTrieAddr(), imagesExtra[i].exportsTrieSize());
- if ( imagesExtra[i].weakBindingsSize() )
- printf(" weak bind info: addr=0x%llX, size=0x%08X\n", imagesExtra[i].weakBindingsAddr(), imagesExtra[i].weakBindingsSize());
- printf(" dependents: ");
- for (uint32_t d=imagesExtra[i].dependentsStartArrayIndex(); dependencyArray[d] != 0xFFFF; ++d) {
- uint16_t depIndex = dependencyArray[d];
- if ( depIndex & 0x8000 )
- printf(" up(%d) ", depIndex & 0x7FFF);
- else
- printf(" %d ", depIndex);
- }
- printf("\n");
- printf(" re-exports: ");
- for (uint32_t r=imagesExtra[i].reExportsStartArrayIndex(); reExportArray[r] != 0xFFFF; ++r)
- printf(" %d ", reExportArray[r]);
- printf("\n");
- }
- printf("libdyld.dylib:\n");
- printf(" __dyld section address: 0x%llX\n", accelInfo->dyldSectionAddr());
- printf("initializers (count=%u):\n", accelInfo->initializersCount());
- const dyldCacheAcceleratorInitializer<LittleEndian>* initializers = (dyldCacheAcceleratorInitializer<LittleEndian>*)((char*)accelInfo + accelInfo->initializersOffset());
- for (uint32_t i=0; i < accelInfo->initializersCount(); ++i) {
- printf(" image[%3u] 0x%llX\n", initializers[i].imageIndex(), mappings[0].address() + initializers[i].functionOffset());
- }
- printf("DOF sections (count=%u):\n", accelInfo->dofSectionsCount());
- const dyldCacheAcceleratorDOFEntry<LittleEndian>* dofs = (dyldCacheAcceleratorDOFEntry<LittleEndian>*)((char*)accelInfo + accelInfo->dofSectionsOffset());
- for (uint32_t i=0; i < accelInfo->dofSectionsCount(); ++i) {
- printf(" image[%3u] 0x%llX -> 0x%llX\n", dofs[i].imageIndex(), dofs[i].sectionAddress(), dofs[i].sectionAddress()+dofs[i].sectionSize());
- }
- printf("bottom up order (count=%u):\n", accelInfo->imageExtrasCount());
- const uint16_t* bottomUpArray = (uint16_t*)((char*)accelInfo + accelInfo->bottomUpListOffset());
- for (uint32_t i=0; i < accelInfo->imageExtrasCount(); ++i) {
- unsigned imageIndex = bottomUpArray[i];
- if ( imageIndex < accelInfo->imageExtrasCount() )
- printf(" image[%3u] %s\n", imageIndex, (char*)options.mappedCache + images[imageIndex].pathFileOffset());
- else
- printf(" image[%3u] BAD INDEX\n", imageIndex);
- }
- printf("range table (count=%u):\n", accelInfo->rangeTableCount());
- const dyldCacheAcceleratorRangeEntry<LittleEndian>* rangeTable = (dyldCacheAcceleratorRangeEntry<LittleEndian>*)((char*)accelInfo + accelInfo->rangeTableOffset());
- for (uint32_t i=0; i < accelInfo->rangeTableCount(); ++i) {
- const dyldCacheAcceleratorRangeEntry<LittleEndian>& entry = rangeTable[i];
- printf(" 0x%llX -> 0x%llX %s\n", entry.startAddress(), entry.startAddress() + entry.size(), (char*)options.mappedCache + images[entry.imageIndex()].pathFileOffset());
- }
- printf("dylib trie (size=%u):\n", accelInfo->dylibTrieSize());
- const uint8_t* dylibTrieStart = (uint8_t*)accelInfo + accelInfo->dylibTrieOffset();
- const uint8_t* dylibTrieEnd = dylibTrieStart + accelInfo->dylibTrieSize();
- std::vector<DylibIndexTrie::Entry> dylibEntries;
- if ( !Trie<DylibIndex>::parseTrie(dylibTrieStart, dylibTrieEnd, dylibEntries) )
- printf(" malformed dylibs trie\n");
- for (const DylibIndexTrie::Entry& x : dylibEntries) {
- printf(" image[%3u] %s\n", x.info.index, x.name.c_str());
- }
- }
- }
- }
- else if ( options.mode == modeTextInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- if ( (header->mappingOffset() < sizeof(dyldCacheHeader<LittleEndian>)) || (header->imagesTextCount() == 0) ) {
- printf("no text info\n");
- }
- else {
- const dyldCacheImageTextInfo<LittleEndian>* imagesText = (dyldCacheImageTextInfo<LittleEndian>*)((char*)options.mappedCache + header->imagesTextOffset());
- const dyldCacheImageTextInfo<LittleEndian>* imagesTextEnd = &imagesText[header->imagesTextCount()];
- printf("dylib text infos (count=%llu):\n", header->imagesTextCount());
- for (const dyldCacheImageTextInfo<LittleEndian>* p=imagesText; p < imagesTextEnd; ++p) {
- printf(" 0x%09llX -> 0x%09llX <", p->loadAddress(), p->loadAddress() + p->textSegmentSize());
- for (int i=0; i<16; ++i) {
- switch (i) {
- case 4:
- case 6:
- case 8:
- case 10:
- printf("-");
- break;
- }
- printf("%02X", p->uuid()[i]);
- }
- printf("> %s\n", (char*)options.mappedCache + p->pathOffset());
- }
- }
- }
- else if ( options.mode == modeLocalSymbols ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- if ( header->localSymbolsOffset() == 0 ) {
- fprintf(stderr, "Error: dyld shared cache does not contain local symbols info\n");
- exit(1);
- }
- const bool is64 = (strstr((char*)options.mappedCache, "64") != NULL);
- const dyldCacheImageInfo<LittleEndian>* imageInfos = (dyldCacheImageInfo<LittleEndian>*)((char*)options.mappedCache + header->imagesOffset());
- const dyldCacheLocalSymbolsInfo<LittleEndian>* localsInfo = (dyldCacheLocalSymbolsInfo<LittleEndian>*)((char*)options.mappedCache + header->localSymbolsOffset());
- const uint32_t nlistFileOffset = (uint32_t)(header->localSymbolsOffset() + localsInfo->nlistOffset());
- const uint32_t nlistCount = localsInfo->nlistCount();
- const uint32_t nlistByteSize = is64 ? nlistCount*16 : nlistCount*12;
- const uint32_t stringsFileOffset = (uint32_t)(header->localSymbolsOffset() + localsInfo->stringsOffset());
- const uint32_t stringsSize = localsInfo->stringsSize();
- const uint32_t entriesCount = localsInfo->entriesCount();
- const dyldCacheLocalSymbolEntry<LittleEndian>* entries = (dyldCacheLocalSymbolEntry<LittleEndian>*)((char*)localsInfo + localsInfo->entriesOffset());
- printf("local symbols nlist array: %3uMB, file offset: 0x%08X -> 0x%08X\n", nlistByteSize/(1024*1024), nlistFileOffset, nlistFileOffset+nlistByteSize);
- printf("local symbols string pool: %3uMB, file offset: 0x%08X -> 0x%08X\n", stringsSize/(1024*1024), stringsFileOffset, stringsFileOffset+stringsSize);
- printf("local symbols by dylib (count=%d):\n", entriesCount);
- //const char* stringPool = (char*)options.mappedCache + stringsFileOffset;
- for (int i=0; i < entriesCount; ++i) {
- const char* imageName = (char*)options.mappedCache + imageInfos[i].pathFileOffset();
- printf(" nlistStartIndex=%5d, nlistCount=%5d, image=%s\n", entries[i].nlistStartIndex(), entries[i].nlistCount(), imageName);
- #if 0
- if ( is64 ) {
- const nlist_64* symTab = (nlist_64*)((char*)options.mappedCache + nlistFileOffset);
- for (int e=0; e < entries[i].nlistCount(); ++e) {
- const nlist_64* entry = &symTab[entries[i].nlistStartIndex()+e];
- printf(" nlist[%d].str=%d, %s\n", e, entry->n_un.n_strx, &stringPool[entry->n_un.n_strx]);
- printf(" nlist[%d].value=0x%0llX\n", e, entry->n_value);
- }
- }
- #endif
- }
- }
+ printf("cache type: %s\n", header->cacheType ? "production" : "development");
+ printf("image count: %u\n", header->imagesCount);
+ if ( (header->mappingOffset >= 0x78) && (header->branchPoolsOffset != 0) ) {
+ printf("branch pool count: %u\n", header->branchPoolsCount);
+ }
+ if ( header->slideInfoSize > 0 ) {
+ uint32_t pageSize = 0x4000; // fix me for intel
+ uint32_t possibleSlideValues = (uint32_t)(header->maxSlide/pageSize);
+ uint32_t entropyBits = 32 - __builtin_clz(possibleSlideValues - 1);
+ printf("ASLR entropy: %u-bits\n", entropyBits);
+ }
+ printf("mappings:\n");
+ const dyld_cache_mapping_info* mappings = (const dyld_cache_mapping_info*)((char*)dyldCache + header->mappingOffset);
+ for (uint32_t i=0; i < header->mappingCount; ++i) {
+ if ( mappings[i].initProt & VM_PROT_EXECUTE )
+ printf(" __TEXT %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
+ mappings[i].size/(1024*1024), mappings[i].fileOffset, mappings[i].fileOffset + mappings[i].size,
+ mappings[i].address, mappings[i].address + mappings[i].size);
+ else if ( mappings[i].initProt & VM_PROT_WRITE )
+ printf(" __DATA %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
+ mappings[i].size/(1024*1024), mappings[i].fileOffset, mappings[i].fileOffset + mappings[i].size,
+ mappings[i].address, mappings[i].address + mappings[i].size);
+ else if ( mappings[i].initProt & VM_PROT_READ )
+ printf(" __LINKEDIT %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
+ mappings[i].size/(1024*1024), mappings[i].fileOffset, mappings[i].fileOffset + mappings[i].size,
+ mappings[i].address, mappings[i].address + mappings[i].size);
+ }
+ if ( header->codeSignatureOffset != 0 ) {
+ uint64_t size = header->codeSignatureSize;
+ uint64_t csAddr = mappings[header->mappingCount-1].address + mappings[header->mappingCount-1].size;
+ if ( size != 0 )
+ printf(" code sign %3lluMB, file offset: 0x%08llX -> 0x%08llX, address: 0x%08llX -> 0x%08llX\n",
+ size/(1024*1024), header->codeSignatureOffset, header->codeSignatureOffset + size, csAddr, csAddr + size);
+ }
+ printf("slide info: %4lluKB, file offset: 0x%08llX -> 0x%08llX\n",
+ header->slideInfoSize/1024, header->slideInfoOffset, header->slideInfoOffset + header->slideInfoSize);
+ if ( header->localSymbolsOffset != 0 )
+ printf("local symbols: %3lluMB, file offset: 0x%08llX -> 0x%08llX\n",
+ header->localSymbolsSize/(1024*1024), header->localSymbolsOffset, header->localSymbolsOffset + header->localSymbolsSize);
+ if ( (header->mappingOffset >= 0x78) && (header->accelerateInfoSize != 0) )
+ printf("accelerate tab: %3lluKB, address: 0x%08llX -> 0x%08llX\n",
+ header->accelerateInfoSize/1024, header->accelerateInfoAddr, header->accelerateInfoAddr + header->accelerateInfoSize);
+ }
+ else if ( options.mode == modeAcceleratorInfo ) {
+ const dyld_cache_header* header = &dyldCache->header;
+ if ( (header->mappingOffset < sizeof(dyld_cache_header)) || (header->accelerateInfoSize == 0) ) {
+ printf("no accelerator info\n");
+ }
+ else {
+ const dyld_cache_mapping_info* mappings = (const dyld_cache_mapping_info*)((char*)dyldCache + header->mappingOffset);
+ uint64_t aiAddr = header->accelerateInfoAddr;
+ const dyld_cache_accelerator_info* accelInfo = NULL;
+ for (uint32_t i=0; i < header->mappingCount; ++i) {
+ if ( (mappings[i].address <= aiAddr) && (aiAddr < mappings[i].address+mappings[i].size) ) {
+ uint64_t offset = aiAddr - mappings[i].address + mappings[i].fileOffset;
+ accelInfo = (dyld_cache_accelerator_info*)((uint8_t*)dyldCache + offset);
+ }
+ }
+ if ( accelInfo == NULL ) {
+ printf("accelerator info not in any mapped range\n");
+ }
+ else {
+ const dyld_cache_image_info* images = (dyld_cache_image_info*)((char*)dyldCache + header->imagesOffset);
+ const dyld_cache_image_info_extra* imagesExtra = (dyld_cache_image_info_extra*)((char*)accelInfo + accelInfo->imagesExtrasOffset);
+ const uint16_t* dependencyArray = (uint16_t*)((char*)accelInfo + accelInfo->depListOffset);
+ const uint16_t* reExportArray = (uint16_t*)((char*)accelInfo + accelInfo->reExportListOffset);
+ printf("extra image info (count=%u):\n", accelInfo->imageExtrasCount);
+ for (uint32_t i=0; i < accelInfo->imageExtrasCount; ++i) {
+ printf(" image[%3u] %s:\n", i, (char*)dyldCache +images[i].pathFileOffset);
+ printf(" exports trie: addr=0x%llX, size=0x%08X\n", imagesExtra[i].exportsTrieAddr, imagesExtra[i].exportsTrieSize);
+ if ( imagesExtra[i].weakBindingsSize )
+ printf(" weak bind info: addr=0x%llX, size=0x%08X\n", imagesExtra[i].weakBindingsAddr, imagesExtra[i].weakBindingsSize);
+ printf(" dependents: ");
+ for (uint32_t d=imagesExtra[i].dependentsStartArrayIndex; dependencyArray[d] != 0xFFFF; ++d) {
+ uint16_t depIndex = dependencyArray[d];
+ if ( depIndex & 0x8000 )
+ printf(" up(%d) ", depIndex & 0x7FFF);
+ else
+ printf(" %d ", depIndex);
+ }
+ printf("\n");
+ printf(" re-exports: ");
+ for (uint32_t r=imagesExtra[i].reExportsStartArrayIndex; reExportArray[r] != 0xFFFF; ++r)
+ printf(" %d ", reExportArray[r]);
+ printf("\n");
+ }
+ printf("libdyld.dylib:\n");
+ printf(" __dyld section address: 0x%llX\n", accelInfo->dyldSectionAddr);
+ printf("initializers (count=%u):\n", accelInfo->initializersCount);
+ const dyld_cache_accelerator_initializer* initializers = (dyld_cache_accelerator_initializer*)((char*)accelInfo + accelInfo->initializersOffset);
+ for (uint32_t i=0; i < accelInfo->initializersCount; ++i) {
+ printf(" image[%3u] 0x%llX\n", initializers[i].imageIndex, mappings[0].address + initializers[i].functionOffset);
+ }
+ printf("DOF sections (count=%u):\n", accelInfo->dofSectionsCount);
+ const dyld_cache_accelerator_dof* dofs = (dyld_cache_accelerator_dof*)((char*)accelInfo + accelInfo->dofSectionsOffset);
+ for (uint32_t i=0; i < accelInfo->dofSectionsCount; ++i) {
+ printf(" image[%3u] 0x%llX -> 0x%llX\n", dofs[i].imageIndex, dofs[i].sectionAddress, dofs[i].sectionAddress+dofs[i].sectionSize);
+ }
+ printf("bottom up order (count=%u):\n", accelInfo->imageExtrasCount);
+ const uint16_t* bottomUpArray = (uint16_t*)((char*)accelInfo + accelInfo->bottomUpListOffset);
+ for (uint32_t i=0; i < accelInfo->imageExtrasCount; ++i) {
+ unsigned imageIndex = bottomUpArray[i];
+ if ( imageIndex < accelInfo->imageExtrasCount )
+ printf(" image[%3u] %s\n", imageIndex, (char*)dyldCache + images[imageIndex].pathFileOffset);
+ else
+ printf(" image[%3u] BAD INDEX\n", imageIndex);
+ }
+ printf("range table (count=%u):\n", accelInfo->rangeTableCount);
+ const dyld_cache_range_entry* rangeTable = (dyld_cache_range_entry*)((char*)accelInfo + accelInfo->rangeTableOffset);
+ for (uint32_t i=0; i < accelInfo->rangeTableCount; ++i) {
+ const dyld_cache_range_entry& entry = rangeTable[i];
+ printf(" 0x%llX -> 0x%llX %s\n", entry.startAddress, entry.startAddress + entry.size, (char*)dyldCache + images[entry.imageIndex].pathFileOffset);
+ }
+ printf("dylib trie (size=%u):\n", accelInfo->dylibTrieSize);
+ const uint8_t* dylibTrieStart = (uint8_t*)accelInfo + accelInfo->dylibTrieOffset;
+ const uint8_t* dylibTrieEnd = dylibTrieStart + accelInfo->dylibTrieSize;
+ std::vector<DylibIndexTrie::Entry> dylibEntries;
+ if ( !Trie<DylibIndex>::parseTrie(dylibTrieStart, dylibTrieEnd, dylibEntries) )
+ printf(" malformed dylibs trie\n");
+ for (const DylibIndexTrie::Entry& x : dylibEntries) {
+ printf(" image[%3u] %s\n", x.info.index, x.name.c_str());
+ }
+ }
+ }
+ }
+ else if ( options.mode == modeTextInfo ) {
+ const dyld_cache_header* header = &dyldCache->header;
+ if ( (header->mappingOffset < sizeof(dyld_cache_header)) || (header->imagesTextCount == 0) ) {
+ printf("no text info\n");
+ }
+ else {
+ const dyld_cache_image_text_info* imagesText = (dyld_cache_image_text_info*)((char*)dyldCache + header->imagesTextOffset);
+ const dyld_cache_image_text_info* imagesTextEnd = &imagesText[header->imagesTextCount];
+ printf("dylib text infos (count=%llu):\n", header->imagesTextCount);
+ for (const dyld_cache_image_text_info* p=imagesText; p < imagesTextEnd; ++p) {
+ printf(" 0x%09llX -> 0x%09llX <", p->loadAddress, p->loadAddress + p->textSegmentSize);
+ for (int i=0; i<16; ++i) {
+ switch (i) {
+ case 4:
+ case 6:
+ case 8:
+ case 10:
+ printf("-");
+ break;
+ }
+ printf("%02X", p->uuid[i]);
+ }
+ printf("> %s\n", (char*)dyldCache + p->pathOffset);
+ }
+ }
+ }
+ else if ( options.mode == modeLocalSymbols ) {
+ const dyld_cache_header* header = &dyldCache->header;
+ if ( header->localSymbolsOffset == 0 ) {
+ fprintf(stderr, "Error: dyld shared cache does not contain local symbols info\n");
+ exit(1);
+ }
+ const bool is64 = (strstr((char*)dyldCache, "64") != NULL);
+ const dyld_cache_image_info* imageInfos = (dyld_cache_image_info*)((char*)dyldCache + header->imagesOffset);
+ const dyld_cache_local_symbols_info* localsInfo = (dyld_cache_local_symbols_info*)((char*)dyldCache + header->localSymbolsOffset);
+ const uint32_t nlistFileOffset = (uint32_t)(header->localSymbolsOffset + localsInfo->nlistOffset);
+ const uint32_t nlistCount = localsInfo->nlistCount;
+ const uint32_t nlistByteSize = is64 ? nlistCount*16 : nlistCount*12;
+ const uint32_t stringsFileOffset = (uint32_t)(header->localSymbolsOffset + localsInfo->stringsOffset);
+ const uint32_t stringsSize = localsInfo->stringsSize;
+ const uint32_t entriesCount = localsInfo->entriesCount;
+ const dyld_cache_local_symbols_entry* entries = (dyld_cache_local_symbols_entry*)((char*)localsInfo + localsInfo->entriesOffset);
+ printf("local symbols nlist array: %3uMB, file offset: 0x%08X -> 0x%08X\n", nlistByteSize/(1024*1024), nlistFileOffset, nlistFileOffset+nlistByteSize);
+ printf("local symbols string pool: %3uMB, file offset: 0x%08X -> 0x%08X\n", stringsSize/(1024*1024), stringsFileOffset, stringsFileOffset+stringsSize);
+ printf("local symbols by dylib (count=%d):\n", entriesCount);
+ //const char* stringPool = (char*)dyldCache + stringsFileOffset;
+ for (int i=0; i < entriesCount; ++i) {
+ const char* imageName = (char*)dyldCache + imageInfos[i].pathFileOffset;
+ printf(" nlistStartIndex=%5d, nlistCount=%5d, image=%s\n", entries[i].nlistStartIndex, entries[i].nlistCount, imageName);
+#if 0
+ if ( is64 ) {
+ const nlist_64* symTab = (nlist_64*)((char*)dyldCache + nlistFileOffset);
+ for (int e=0; e < entries[i].nlistCount(); ++e) {
+ const nlist_64* entry = &symTab[entries[i].nlistStartIndex()+e];
+ printf(" nlist[%d].str=%d, %s\n", e, entry->n_un.n_strx, &stringPool[entry->n_un.n_strx]);
+ printf(" nlist[%d].value=0x%0llX\n", e, entry->n_value);
+ }
+ }
+#endif
+ }
+ }
+ else if ( options.mode == modeJSONMap ) {
+ std::string buffer = dyldCache->generateJSONMap("unknown");
+ printf("%s\n", buffer.c_str());
+ }
+ else if ( options.mode == modeJSONDependents ) {
+ std::cout << dyldCache->generateJSONDependents();
+ }
else if ( options.mode == modeStrings ) {
if (printStrings) {
dyldCache->forEachImage(^(const mach_header *mh, const char *installName) {
@@ -1030,225 +812,300 @@
});
}
}
- else if ( options.mode == modeExtract ) {
- char pathBuffer[PATH_MAX];
- uint32_t bufferSize = PATH_MAX;
- if ( _NSGetExecutablePath(pathBuffer, &bufferSize) != 0 ) {
- fprintf(stderr, "Error: could not get path of program\n");
- return 1;
- }
- char* last = strrchr(pathBuffer, '/');
- strcpy(last+1, "../../lib/dsc_extractor.bundle");
- void* handle = dlopen(pathBuffer, RTLD_LAZY);
- if ( handle == NULL ) {
- fprintf(stderr, "Error: dsc_extractor.bundle could not be loaded at %s\n", pathBuffer);
- return 1;
- }
-
- typedef int (*extractor_proc)(const char* shared_cache_file_path, const char* extraction_root_path,
- void (^progress)(unsigned current, unsigned total));
-
- extractor_proc proc = (extractor_proc)dlsym(handle, "dyld_shared_cache_extract_dylibs_progress");
- if ( proc == NULL ) {
- fprintf(stderr, "Error: dsc_extractor.bundle did not have dyld_shared_cache_extract_dylibs_progress symbol\n");
- return 1;
- }
-
- int result = (*proc)(sharedCachePath, options.extractionDir, ^(unsigned c, unsigned total) { } );
- return result;
- }
- else {
- segment_callback_t callback = nullptr;
- if ( strcmp((char*)options.mappedCache, "dyld_v1 i386") == 0 ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<x86>;
- break;
- case modeMap:
- callback = print_map<x86>;
- break;
- case modeDependencies:
- callback = print_dependencies<x86>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<x86>;
- break;
- case modeSize:
- callback = collect_size<x86>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- case modeVerboseSlideInfo:
- case modeAcceleratorInfo:
- case modeTextInfo:
- case modeLocalSymbols:
- case modeStrings:
- case modeExtract:
- break;
- }
- }
- else if ( (strcmp((char*)options.mappedCache, "dyld_v1 x86_64") == 0)
- || (strcmp((char*)options.mappedCache, "dyld_v1 x86_64h") == 0) ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<x86_64>;
- break;
- case modeMap:
- callback = print_map<x86_64>;
- break;
- case modeDependencies:
- callback = print_dependencies<x86_64>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<x86_64>;
- break;
- case modeSize:
- callback = collect_size<x86_64>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- case modeVerboseSlideInfo:
- case modeAcceleratorInfo:
- case modeTextInfo:
- case modeLocalSymbols:
- case modeStrings:
- case modeExtract:
- break;
- }
- }
- else if ( (strncmp((char*)options.mappedCache, "dyld_v1 armv", 14) == 0)
- || (strncmp((char*)options.mappedCache, "dyld_v1 armv", 13) == 0)
-#if SUPPORT_ARCH_arm64_32
- || (strcmp((char*)options.mappedCache, "dyld_v1arm64_32") == 0)
-#endif
- ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<arm>;
- break;
- case modeMap:
- callback = print_map<arm>;
- break;
- case modeDependencies:
- callback = print_dependencies<arm>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<arm>;
- break;
- case modeSize:
- callback = collect_size<arm>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- case modeVerboseSlideInfo:
- case modeAcceleratorInfo:
- case modeTextInfo:
- case modeLocalSymbols:
- case modeStrings:
- case modeExtract:
- break;
- }
- }
- else if ( (strcmp((char*)options.mappedCache, "dyld_v1 arm64") == 0)
-#if SUPPORT_ARCH_arm64e
- || (strcmp((char*)options.mappedCache, "dyld_v1 arm64e") == 0)
-#endif
- ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<arm64>;
- break;
- case modeMap:
- callback = print_map<arm64>;
- break;
- case modeDependencies:
- callback = print_dependencies<arm64>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<arm64>;
- break;
- case modeSize:
- callback = collect_size<arm64>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- case modeVerboseSlideInfo:
- case modeAcceleratorInfo:
- case modeTextInfo:
- case modeLocalSymbols:
- case modeStrings:
- case modeExtract:
- break;
- }
- }
-#if SUPPORT_ARCH_arm64_32
- else if ( (strcmp((char*)options.mappedCache, "dyld_v1arm64_32") == 0) ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<arm64_32>;
- break;
- case modeMap:
- callback = print_map<arm64_32>;
- break;
- case modeDependencies:
- callback = print_dependencies<arm64_32>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<arm64_32>;
- break;
- case modeSize:
- callback = collect_size<arm64_32>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- case modeVerboseSlideInfo:
- case modeAcceleratorInfo:
- case modeTextInfo:
- case modeLocalSymbols:
- case modeStrings:
- case modeExtract:
- break;
- }
- }
-#endif
- else {
- fprintf(stderr, "Error: unrecognized dyld shared cache magic.\n");
- exit(1);
- }
-
- __block Results results;
- results.dependentTargetFound = false;
- int iterateResult = dyld_shared_cache_iterate(options.mappedCache, (uint32_t)cacheLength,
- ^(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo ) {
- (callback)(dylibInfo, segInfo, options, results);
- });
- if ( iterateResult != 0 ) {
- fprintf(stderr, "Error: malformed shared cache file\n");
- exit(1);
- }
-
- if ( options.mode == modeLinkEdit ) {
- // dump -linkedit information
- for (std::map<uint32_t, const char*>::iterator it = results.pageToContent.begin(); it != results.pageToContent.end(); ++it) {
- printf("0x%08X %s\n", it->first, it->second);
- }
- }
- else if ( options.mode == modeSize ) {
- std::sort(results.textSegments.begin(), results.textSegments.end(), TextInfoSorter());
- for (std::vector<TextInfo>::iterator it = results.textSegments.begin(); it != results.textSegments.end(); ++it) {
- printf(" 0x%08llX %s\n", it->textSize, it->path);
- }
- }
-
- if ( (options.mode == modeDependencies) && options.dependentsOfPath && !results.dependentTargetFound) {
- fprintf(stderr, "Error: could not find '%s' in the shared cache at\n %s\n", options.dependentsOfPath, sharedCachePath);
- exit(1);
- }
- }
- return 0;
+ else if ( options.mode == modeSectionSizes ) {
+ __block std::map<std::string, uint64_t> sectionSizes;
+ dyldCache->forEachImage(^(const mach_header *mh, const char *installName) {
+ const dyld3::MachOAnalyzer* ma = (const dyld3::MachOAnalyzer*)mh;
+ ma->forEachSection(^(const dyld3::MachOAnalyzer::SectionInfo §Info, bool malformedSectionRange, bool &stop) {
+ std::string section = std::string(sectInfo.segInfo.segName) + " " + sectInfo.sectName;
+ sectionSizes[section] += sectInfo.sectSize;
+ });
+ });
+ for (const auto& keyAndValue : sectionSizes) {
+ printf("%lld %s\n", keyAndValue.second, keyAndValue.first.c_str());
+ }
+ }
+ else if ( options.mode == modeObjCProtocols ) {
+ if ( dyldCache->objcOpt() == nullptr ) {
+ fprintf(stderr, "Error: could not get optimized objc\n");
+ return 1;
+ }
+ objc_opt::objc_protocolopt2_t* protocols = dyldCache->objcOpt()->protocolopt2();
+ if ( protocols == nullptr ) {
+ fprintf(stderr, "Error: could not get optimized objc protocols\n");
+ return 1;
+ }
+
+ for (uint64_t index = 0; index != protocols->capacity; ++index) {
+ const objc_opt::objc_classheader_t& clshi = protocols->classOffsets()[index];
+ if ( clshi.clsOffset == 0 ) {
+ fprintf(stderr, "[% 5lld]\n", index);
+ continue;
+ }
+ const char* name = (const char*)(((const uint8_t*)protocols) + protocols->offsets()[index]);
+ if ( !clshi.isDuplicate() ) {
+ fprintf(stderr, "[% 5lld] -> (% 8d, % 8d) = %s\n", index, clshi.clsOffset, clshi.hiOffset, name);
+ continue;
+ }
+
+ // class appears in more than one header
+ uint32_t count = clshi.duplicateCount();
+ fprintf(stderr, "[% 5lld] -> duplicates [% 5d..% 5d] = %s\n",
+ index, clshi.duplicateIndex(), clshi.duplicateIndex() + clshi.duplicateCount() - 1, name);
+
+ const objc_opt::objc_classheader_t *list = &protocols->duplicateOffsets()[clshi.duplicateIndex()];
+ for (uint32_t i = 0; i < count; i++) {
+ fprintf(stderr, " - [% 5lld] -> (% 8d, % 8d)\n", (uint64_t)(clshi.duplicateIndex() + i), list[i].clsOffset, list[i].hiOffset);
+ }
+ }
+ }
+ else if ( options.mode == modeExtract ) {
+ char pathBuffer[PATH_MAX];
+ uint32_t bufferSize = PATH_MAX;
+ if ( _NSGetExecutablePath(pathBuffer, &bufferSize) != 0 ) {
+ fprintf(stderr, "Error: could not get path of program\n");
+ return 1;
+ }
+ char* last = strrchr(pathBuffer, '/');
+ // The bundle is at a different location on device. Its /usr/lib/dsc_extractor.bundle in the SDK
+ // but /usr/local/lib/dsc_extractor.bundle on device.
+ strcpy(last+1, DSC_BUNDLE_REL_PATH);
+ void* handle = dlopen(pathBuffer, RTLD_LAZY);
+ if ( handle == NULL ) {
+ fprintf(stderr, "Error: dsc_extractor.bundle could not be loaded at %s\n", pathBuffer);
+ return 1;
+ }
+
+ typedef int (*extractor_proc)(const char* shared_cache_file_path, const char* extraction_root_path,
+ void (^progress)(unsigned current, unsigned total));
+
+ extractor_proc proc = (extractor_proc)dlsym(handle, "dyld_shared_cache_extract_dylibs_progress");
+ if ( proc == NULL ) {
+ fprintf(stderr, "Error: dsc_extractor.bundle did not have dyld_shared_cache_extract_dylibs_progress symbol\n");
+ return 1;
+ }
+
+ int result = (*proc)(sharedCachePath, options.extractionDir, ^(unsigned c, unsigned total) { } );
+ return result;
+ }
+ else {
+ switch ( options.mode ) {
+ case modeList: {
+ if (options.printInodes) {
+ dyldCache->forEachImageEntry(^(const char* path, uint64_t mTime, uint64_t inode) {
+ printf("0x%08llX 0x%08llX ", inode, mTime);
+ if ( isAlias(path, dyldCache) )
+ printf("[alias] %s\n", path);
+ else
+ printf("%s\n", path);
+ });
+ } else {
+ dyldCache->forEachImageTextSegment(^(uint64_t loadAddressUnslid, uint64_t textSegmentSize, const unsigned char *dylibUUID, const char *installName, bool &stop) {
+ if ( options.printVMAddrs )
+ printf("0x%08llX ", loadAddressUnslid);
+ if ( options.printUUIDs ) {
+ const uint8_t* uuid = (uint8_t*)dylibUUID;
+ printf("<%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X> ",
+ uuid[0], uuid[1], uuid[2], uuid[3],
+ uuid[4], uuid[5], uuid[6], uuid[7],
+ uuid[8], uuid[9], uuid[10], uuid[11],
+ uuid[12], uuid[13], uuid[14], uuid[15]);
+ }
+ if ( isAlias(installName, dyldCache) )
+ printf("[alias] %s\n", installName);
+ else
+ printf("%s\n", installName);
+ });
+ }
+ break;
+ }
+ case modeMap: {
+ __block std::map<uint64_t, const char*> dataSegNames;
+ __block std::map<uint64_t, uint64_t> dataSegEnds;
+ dyldCache->forEachImage(^(const mach_header* mh, const char* installName) {
+ dyld3::MachOFile* mf = (dyld3::MachOFile*)mh;
+ mf->forEachSegment(^(const dyld3::MachOAnalyzer::SegmentInfo &info, bool &stop) {
+ if ( isAlias(installName, dyldCache) )
+ return;
+ printf("0x%08llX - 0x%08llX %s %s\n", info.vmAddr, info.vmAddr + info.vmSize, info.segName, installName);
+ if ( strncmp(info.segName, "__DATA", 6) == 0 ) {
+ dataSegNames[info.vmAddr] = installName;
+ dataSegEnds[info.vmAddr] = info.vmAddr + info.vmSize;
+ }
+ });
+ });
+ // <rdar://problem/51084507> Enhance dyld_shared_cache_util to show where section alignment added padding
+ uint64_t lastEnd = 0;
+ for (const auto& entry : dataSegEnds) {
+ uint64_t padding = entry.first - lastEnd;
+ if ( (padding > 32) && (lastEnd != 0) ) {
+ printf("0x%08llX - 0x%08llX PADDING %lluKB\n", lastEnd, entry.first, padding/1024);
+ }
+ lastEnd = entry.second;
+ }
+ break;
+ }
+ case modeDependencies: {
+ __block bool dependentTargetFound = false;
+ dyldCache->forEachImage(^(const mach_header* mh, const char* installName) {
+ if ( strcmp(options.dependentsOfPath, installName) != 0 )
+ return;
+ dependentTargetFound = true;
+
+ auto printDep = [&options](const char *loadPath, uint32_t compatVersion, uint32_t curVersion) {
+ if ( options.printDylibVersions ) {
+ uint32_t compat_vers = compatVersion;
+ uint32_t current_vers = curVersion;
+ printf("\t%s", loadPath);
+ if ( compat_vers != 0xFFFFFFFF ) {
+ printf("(compatibility version %u.%u.%u, current version %u.%u.%u)\n",
+ (compat_vers >> 16),
+ (compat_vers >> 8) & 0xff,
+ (compat_vers) & 0xff,
+ (current_vers >> 16),
+ (current_vers >> 8) & 0xff,
+ (current_vers) & 0xff);
+ }
+ else {
+ printf("\n");
+ }
+ }
+ else {
+ printf("\t%s\n", loadPath);
+ }
+ };
+
+ dyld3::MachOFile* mf = (dyld3::MachOFile*)mh;
+
+ // First print out our dylib and version.
+ const char* dylibInstallName;
+ uint32_t currentVersion;
+ uint32_t compatVersion;
+ if ( mf->getDylibInstallName(&dylibInstallName, &compatVersion, ¤tVersion) ) {
+ printDep(dylibInstallName, compatVersion, currentVersion);
+ }
+
+ // Then the dependent dylibs.
+ mf->forEachDependentDylib(^(const char *loadPath, bool isWeak, bool isReExport, bool isUpward, uint32_t compatVersion, uint32_t curVersion, bool &stop) {
+ printDep(loadPath, compatVersion, curVersion);
+ });
+ });
+ if (options.dependentsOfPath && !dependentTargetFound) {
+ fprintf(stderr, "Error: could not find '%s' in the shared cache at\n %s\n", options.dependentsOfPath, sharedCachePath);
+ exit(1);
+ }
+ break;
+ }
+ case modeLinkEdit: {
+ std::map<uint32_t, const char*> pageToContent;
+ auto add_linkedit = [&pageToContent](uint32_t pageStart, uint32_t pageEnd, const char* message) {
+ for (uint32_t p = pageStart; p <= pageEnd; p += 4096) {
+ std::map<uint32_t, const char*>::iterator pos = pageToContent.find(p);
+ if ( pos == pageToContent.end() ) {
+ pageToContent[p] = strdup(message);
+ }
+ else {
+ const char* oldMessage = pos->second;
+ char* newMesssage;
+ asprintf(&newMesssage, "%s, %s", oldMessage, message);
+ pageToContent[p] = newMesssage;
+ ::free((void*)oldMessage);
+ }
+ }
+ };
+
+ dyldCache->forEachImage(^(const mach_header* mh, const char* installName) {
+ // Filter out symlinks.
+ if (isAlias(installName, dyldCache))
+ return;
+ dyld3::MachOAnalyzer* ma = (dyld3::MachOAnalyzer*)mh;
+ Diagnostics diag;
+ dyld3::MachOAnalyzer::LinkEditInfo leInfo;
+ ma->getLinkEditPointers(diag, leInfo);
+
+ if (diag.hasError())
+ return;
+
+ char message[1000];
+ const char* shortName = strrchr(installName, '/') + 1;
+ // add export trie info
+ if ( leInfo.dyldInfo->export_size != 0 ) {
+ //printf("export_off=0x%X\n", leInfo.dyldInfo->export_off());
+ uint32_t exportPageOffsetStart = leInfo.dyldInfo->export_off & (-4096);
+ uint32_t exportPageOffsetEnd = (leInfo.dyldInfo->export_off + leInfo.dyldInfo->export_size) & (-4096);
+ sprintf(message, "exports from %s", shortName);
+ add_linkedit(exportPageOffsetStart, exportPageOffsetEnd, message);
+ }
+ // add binding info
+ if ( leInfo.dyldInfo->bind_size != 0 ) {
+ uint32_t bindPageOffsetStart = leInfo.dyldInfo->bind_off & (-4096);
+ uint32_t bindPageOffsetEnd = (leInfo.dyldInfo->bind_off + leInfo.dyldInfo->bind_size) & (-4096);
+ sprintf(message, "bindings from %s", shortName);
+ add_linkedit(bindPageOffsetStart, bindPageOffsetEnd, message);
+ }
+ // add lazy binding info
+ if ( leInfo.dyldInfo->lazy_bind_size != 0 ) {
+ uint32_t lazybindPageOffsetStart = leInfo.dyldInfo->lazy_bind_off & (-4096);
+ uint32_t lazybindPageOffsetEnd = (leInfo.dyldInfo->lazy_bind_off + leInfo.dyldInfo->lazy_bind_size) & (-4096);
+ sprintf(message, "lazy bindings from %s", shortName);
+ add_linkedit(lazybindPageOffsetStart, lazybindPageOffsetEnd, message);
+ }
+ // add weak binding info
+ if ( leInfo.dyldInfo->weak_bind_size != 0 ) {
+ uint32_t weakbindPageOffsetStart = leInfo.dyldInfo->weak_bind_off & (-4096);
+ uint32_t weakbindPageOffsetEnd = (leInfo.dyldInfo->weak_bind_off + leInfo.dyldInfo->weak_bind_size) & (-4096);
+ sprintf(message, "weak bindings from %s", shortName);
+ add_linkedit(weakbindPageOffsetStart, weakbindPageOffsetEnd, message);
+ }
+ });
+
+ for (std::map<uint32_t, const char*>::iterator it = pageToContent.begin(); it != pageToContent.end(); ++it) {
+ printf("0x%08X %s\n", it->first, it->second);
+ }
+ break;
+ }
+ case modeSize: {
+ struct TextInfo {
+ uint64_t textSize;
+ const char* path;
+ };
+ __block std::vector<TextInfo> textSegments;
+ dyldCache->forEachImage(^(const mach_header* mh, const char* installName) {
+ // Filter out symlinks.
+ if (isAlias(installName, dyldCache))
+ return;
+
+ dyld3::MachOAnalyzer* ma = (dyld3::MachOAnalyzer*)mh;
+ ma->forEachSegment(^(const dyld3::MachOAnalyzer::SegmentInfo &info, bool &stop) {
+ if ( strcmp(info.segName, "__TEXT") != 0 )
+ return;
+ textSegments.push_back({ info.fileSize, installName });
+ });
+ });
+ std::sort(textSegments.begin(), textSegments.end(), [](const TextInfo& left, const TextInfo& right) {
+ return (left.textSize > right.textSize);
+ });
+ for (std::vector<TextInfo>::iterator it = textSegments.begin(); it != textSegments.end(); ++it) {
+ printf(" 0x%08llX %s\n", it->textSize, it->path);
+ }
+ break;
+ }
+ case modeNone:
+ case modeInfo:
+ case modeSlideInfo:
+ case modeVerboseSlideInfo:
+ case modeAcceleratorInfo:
+ case modeTextInfo:
+ case modeLocalSymbols:
+ case modeJSONMap:
+ case modeJSONDependents:
+ case modeSectionSizes:
+ case modeStrings:
+ case modeObjCProtocols:
+ case modeExtract:
+ break;
+ }
+ }
+ return 0;
}
+