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--- dyld/dyld-750.6/launch-cache/dyld_shared_cache_util.cpp
+++ dyld/dyld-360.19/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@
*/
@@ -26,7 +26,6 @@
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
-#include <dlfcn.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
@@ -34,1559 +33,604 @@
#include <sys/syslimits.h>
#include <mach-o/arch.h>
#include <mach-o/loader.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 <optional>
-
-#include "ClosureBuilder.h"
-#include "DyldSharedCache.h"
-#include "ClosureFileSystemPhysical.h"
-#include "JSONWriter.h"
-#include "Trie.hpp"
-
-#include "objc-shared-cache.h"
-
-#if TARGET_OS_OSX
-#define DSC_BUNDLE_REL_PATH "../../lib/dsc_extractor.bundle"
+
+#include "dsc_iterator.h"
+#include "dyld_cache_format.h"
+#include "Architectures.hpp"
+#include "MachOFileAbstraction.hpp"
+#include "CacheFileAbstraction.hpp"
+
+enum Mode {
+ modeNone,
+ modeList,
+ modeMap,
+ modeDependencies,
+ modeSlideInfo,
+ modeLinkEdit,
+ modeInfo,
+ modeSize
+};
+
+struct Options {
+ Mode mode;
+ const char* dependentsOfPath;
+ const void* mappedCache;
+ 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;
+};
+
+
+
+void usage() {
+ fprintf(stderr, "Usage: dyld_shared_cache_util -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit | -map [ shared-cache-file ] | -slide_info | -info\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 );
+}
+#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__
+ return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "arm64";
#else
-#define DSC_BUNDLE_REL_PATH "../lib/dsc_extractor.bundle"
+ #error unsupported architecture
#endif
-
-using dyld3::closure::ClosureBuilder;
-using dyld3::closure::FileSystemPhysical;
-
-// mmap() an shared cache file read/only but laid out like it would be at runtime
-static const DyldSharedCache* mapCacheFile(const char* path)
+}
+
+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)
{
- struct stat statbuf;
- if ( ::stat(path, &statbuf) ) {
- fprintf(stderr, "Error: stat failed for dyld shared cache at %s\n", path);
- return nullptr;
+ 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);
+ size_t size = segInfo->fileSize;
+}
+
+
+
+
+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, -linkedit, -map, 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;
+ options.printUUIDs = false;
+ options.printVMAddrs = false;
+ options.printDylibVersions = false;
+ options.printInodes = false;
+ options.dependentsOfPath = NULL;
- int cache_fd = ::open(path, O_RDONLY);
- if (cache_fd < 0) {
- fprintf(stderr, "Error: failed to open shared cache file at %s\n", path);
- return nullptr;
- }
-
- uint8_t firstPage[4096];
- if ( ::pread(cache_fd, firstPage, 4096, 0) != 4096 ) {
- fprintf(stderr, "Error: failed to read shared cache file at %s\n", path);
- return nullptr;
- }
- const dyld_cache_header* header = (dyld_cache_header*)firstPage;
- const dyld_cache_mapping_info* mappings = (dyld_cache_mapping_info*)(firstPage + header->mappingOffset);
-
- size_t vmSize = (size_t)(mappings[2].address + mappings[2].size - mappings[0].address);
- vm_address_t result;
- kern_return_t r = ::vm_allocate(mach_task_self(), &result, vmSize, VM_FLAGS_ANYWHERE);
- if ( r != KERN_SUCCESS ) {
- fprintf(stderr, "Error: failed to allocate space to load shared cache file at %s\n", path);
- return nullptr;
- }
- for (int i=0; i < 3; ++i) {
- void* mapped_cache = ::mmap((void*)(result + mappings[i].address - mappings[0].address), (size_t)mappings[i].size,
- PROT_READ, MAP_FIXED | MAP_PRIVATE, cache_fd, mappings[i].fileOffset);
- if (mapped_cache == MAP_FAILED) {
- fprintf(stderr, "Error: mmap() for shared cache at %s failed, errno=%d\n", path, errno);
- return nullptr;
- }
- }
- ::close(cache_fd);
-
- return (DyldSharedCache*)result;
-}
-
-enum Mode {
- modeNone,
- modeList,
- modeMap,
- modeDependencies,
- modeSlideInfo,
- modeVerboseSlideInfo,
- modeAcceleratorInfo,
- modeTextInfo,
- modeLinkEdit,
- modeLocalSymbols,
- modeJSONMap,
- modeJSONDependents,
- modeSectionSizes,
- modeStrings,
- modeInfo,
- modeSize,
- modeObjCProtocols,
- modeObjCClasses,
- modeObjCSelectors,
- 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");
-}
-
-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);
- }
-}
-
-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;
-}
-
-int main (int argc, const char* argv[]) {
-
- const char* sharedCachePath = nullptr;
-
- Options options;
- options.mode = modeNone;
- options.printUUIDs = false;
- options.printVMAddrs = false;
- options.printDylibVersions = false;
- options.printInodes = false;
- options.dependentsOfPath = NULL;
- options.extractionDir = NULL;
-
- bool printStrings = false;
- bool printExports = false;
-
for (uint32_t i = 1; i < argc; i++) {
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, "-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, "-local_symbols") == 0) {
- checkMode(options.mode);
- options.mode = modeLocalSymbols;
- }
- else if (strcmp(opt, "-strings") == 0) {
- if (options.mode != modeStrings)
- checkMode(options.mode);
- 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, "-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, "-objc-classes") == 0) {
- checkMode(options.mode);
- options.mode = modeObjCClasses;
- }
- else if (strcmp(opt, "-objc-selectors") == 0) {
- checkMode(options.mode);
- options.mode = modeObjCSelectors;
- }
- 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, "-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, "-map") == 0) {
+ checkMode(options.mode);
+ options.mode = modeMap;
+ }
+ else if (strcmp(opt, "-size") == 0) {
+ checkMode(options.mode);
+ options.mode = modeSize;
+ }
+ 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);
- }
- }
-
- const DyldSharedCache* dyldCache = nullptr;
- if ( sharedCachePath != nullptr ) {
- dyldCache = mapCacheFile(sharedCachePath);
- // mapCacheFile prints an error if something goes wrong, so just return in that case.
- if ( dyldCache == nullptr )
- 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
- if (dyldCache == nullptr) {
- fprintf(stderr, "Could not get in-memory shared cache\n");
- return 1;
- }
- if ( options.mode == modeObjCClasses ) {
- fprintf(stderr, "Cannot use -objc-info with a live cache. Please run with a path to an on-disk cache file\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 valueMask = ~deltaMask;
- const uintptr_t valueAdd = (uintptr_t)(slideInfo->value_add);
- const unsigned deltaShift = __builtin_ctzll(deltaMask) - 2;
-
- uint32_t pageOffset = startOffset;
- uint32_t delta = 1;
- while ( delta != 0 ) {
- uint8_t* loc = pageContent + pageOffset;
- uintptr_t rawValue = *((uintptr_t*)loc);
- delta = (uint32_t)((rawValue & deltaMask) >> deltaShift);
- uintptr_t value = (rawValue & valueMask);
- if ( value != 0 ) {
- value += valueAdd;
- value += slideAmount;
- }
- 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 = 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));
- 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]);
- if ( options.mode == modeVerboseSlideInfo ) {
- 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 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);
- 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);
- 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 rebaseChainV4 = [&](uint8_t* pageContent, uint16_t startOffset)
- {
- uintptr_t slideAmount = 0;
- const uintptr_t deltaMask = (uintptr_t)(slideInfo->delta_mask);
- const uintptr_t valueMask = ~deltaMask;
- const uintptr_t valueAdd = (uintptr_t)(slideInfo->value_add);
- const unsigned deltaShift = __builtin_ctzll(deltaMask) - 2;
-
- uint32_t pageOffset = startOffset;
- uint32_t delta = 1;
- while ( delta != 0 ) {
- uint8_t* loc = pageContent + pageOffset;
- uint32_t rawValue = *((uint32_t*)loc);
- delta = (uint32_t)((rawValue & deltaMask) >> deltaShift);
- uintptr_t value = (rawValue & valueMask);
- if ( (value & 0xFFFF8000) == 0 ) {
- // small positive non-pointer, use as-is
- }
- else if ( (value & 0x3FFF8000) == 0x3FFF8000 ) {
- // small negative non-pointer
- value |= 0xC0000000;
- }
- else {
- value += valueAdd;
- value += slideAmount;
- }
- printf(" [% 5d + 0x%04X]: 0x%08X\n", i, pageOffset, rawValue);
- pageOffset += delta;
- }
- };
- const uint8_t* dataPagesStart = dyldCache->dataRegionStart();
- if ( start == DYLD_CACHE_SLIDE4_PAGE_NO_REBASE ) {
- printf("page[% 5d]: no rebasing\n", i);
- }
- else if ( start & DYLD_CACHE_SLIDE4_PAGE_USE_EXTRA ) {
- printf("page[% 5d]: ", i);
- int j=(start & DYLD_CACHE_SLIDE4_PAGE_INDEX);
- bool done = false;
- do {
- uint16_t aStart = extras[j];
- printf("start=0x%04X ", aStart & DYLD_CACHE_SLIDE4_PAGE_INDEX);
- if ( options.mode == modeVerboseSlideInfo ) {
- uint8_t* page = (uint8_t*)(long)(dataPagesStart + (slideInfo->page_size*i));
- uint16_t pageStartOffset = (aStart & DYLD_CACHE_SLIDE4_PAGE_INDEX)*4;
- rebaseChainV4(page, pageStartOffset);
- }
- done = (extras[j] & DYLD_CACHE_SLIDE4_PAGE_EXTRA_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));
- uint16_t pageStartOffset = start*4;
- rebaseChainV4(page, pageStartOffset);
- }
- }
- }
- }
- }
- 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));
- uint32_t simulator = bitfield & 0x200;
- uint32_t locallyBuiltCache = bitfield & 0x400;
- switch (platform) {
- case 1:
- printf("platform: macOS\n");
- break;
- case 2:
- if ( simulator )
- printf("platform: iOS simulator\n");
- else
- printf("platform: iOS\n");
- break;
- case 3:
- if ( simulator )
- printf("platform: tvOS simulator\n");
- else
- printf("platform: tvOS\n");
- break;
- case 4:
- if ( simulator )
- printf("platform: watchOS simulator\n");
- else
- printf("platform: watchOS\n");
- break;
- case 5:
- printf("platform: bridgeOS\n");
- break;
- default:
- printf("platform: 0x%08X 0x%08X\n", platform, simulator);
- }
- printf("built by: %s\n", locallyBuiltCache ? "local machine" : "B&I");
- }
- 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) {
- const dyld3::MachOAnalyzer* ma = (dyld3::MachOAnalyzer*)mh;
- int64_t slide = ma->getSlide();
- ma->forEachSection(^(const dyld3::MachOAnalyzer::SectionInfo& info, bool malformedSectionRange, bool& stop) {
- if ( ( (info.sectFlags & SECTION_TYPE) == S_CSTRING_LITERALS ) ) {
- if ( malformedSectionRange ) {
- stop = true;
- return;
- }
- const uint8_t* content = (uint8_t*)(info.sectAddr + slide);
- const char* s = (char*)content;
- const char* end = s + info.sectSize;
- while ( s < end ) {
- printf("%s: %s\n", ma->installName(), s);
- while (*s != '\0' )
- ++s;
- ++s;
- }
- }
- });
- });
- }
-
- if (printExports) {
- dyldCache->forEachImage(^(const mach_header *mh, const char *installName) {
- const dyld3::MachOAnalyzer* ma = (dyld3::MachOAnalyzer*)mh;
- uint32_t exportTrieRuntimeOffset;
- uint32_t exportTrieSize;
- if ( ma->hasExportTrie(exportTrieRuntimeOffset, exportTrieSize) ) {
- const uint8_t* start = (uint8_t*)mh + exportTrieRuntimeOffset;
- const uint8_t* end = start + exportTrieSize;
- std::vector<ExportInfoTrie::Entry> exports;
- if ( !ExportInfoTrie::parseTrie(start, end, exports) ) {
- return;
- }
-
- for (const ExportInfoTrie::Entry& entry: exports) {
- printf("%s: %s\n", ma->installName(), entry.name.c_str());
- }
- }
- });
- }
- }
- 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 == modeObjCClasses ) {
- using dyld3::json::Node;
- using ObjCClassInfo = dyld3::MachOAnalyzer::ObjCClassInfo;
- const bool rebased = false;
-
- // Build a map of class vm addrs to their names so that categories know the
- // name of the class they are attaching to
- __block std::map<uint64_t, const char*> classVMAddrToName;
- __block std::map<uint64_t, const char*> metaclassVMAddrToName;
- dyldCache->forEachImage(^(const mach_header *mh, const char *installName) {
- const dyld3::MachOAnalyzer* ma = (const dyld3::MachOAnalyzer*)mh;
- const uint32_t pointerSize = ma->pointerSize();
-
- auto visitClass = ^(Diagnostics& diag, uint64_t classVMAddr,
- uint64_t classSuperclassVMAddr, uint64_t classDataVMAddr,
- const dyld3::MachOAnalyzer::ObjCClassInfo& objcClass, bool isMetaClass) {
- dyld3::MachOAnalyzer::PrintableStringResult classNameResult;
- const char* className = ma->getPrintableString(objcClass.nameVMAddr(pointerSize), classNameResult);
- if (classNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- if (isMetaClass)
- metaclassVMAddrToName[classVMAddr] = className;
- else
- classVMAddrToName[classVMAddr] = className;
- };
-
- Diagnostics diag;
- ma->forEachObjCClass(diag, rebased, visitClass);
- });
-
- // These are used only for the on-disk binaries we analyze
- __block std::vector<const char*> onDiskChainedFixupBindTargets;
- __block std::map<uint64_t, const char*> onDiskClassVMAddrToName;
- __block std::map<uint64_t, const char*> onDiskMetaclassVMAddrToName;
-
- __block Node root;
- auto makeNode = [](std::string str) -> Node {
- Node node;
- node.value = str;
- return node;
- };
-
- auto getProperties = ^(const dyld3::MachOAnalyzer* ma, uint64_t propertiesVMAddr) {
- __block Node propertiesNode;
- auto visitProperty = ^(uint64_t propertyVMAddr, const dyld3::MachOAnalyzer::ObjCProperty& property) {
- // Get the name
- dyld3::MachOAnalyzer::PrintableStringResult propertyNameResult;
- const char* propertyName = ma->getPrintableString(property.nameVMAddr, propertyNameResult);
- if (propertyNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- // Get the attributes
- dyld3::MachOAnalyzer::PrintableStringResult propertyAttributesResult;
- const char* propertyAttributes = ma->getPrintableString(property.attributesVMAddr, propertyAttributesResult);
- if (propertyAttributesResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- Node propertyNode;
- propertyNode.map["name"] = makeNode(propertyName);
- propertyNode.map["attributes"] = makeNode(propertyAttributes);
- propertiesNode.array.push_back(propertyNode);
- };
- ma->forEachObjCProperty(propertiesVMAddr, rebased, visitProperty);
- return propertiesNode.array.empty() ? std::optional<Node>() : propertiesNode;
- };
-
- auto getClasses = ^(const dyld3::MachOAnalyzer* ma) {
- Diagnostics diag;
- const uint32_t pointerSize = ma->pointerSize();
-
- __block Node classesNode;
- __block bool skippedPreviousClass = false;
- auto visitClass = ^(Diagnostics& diag, uint64_t classVMAddr,
- uint64_t classSuperclassVMAddr, uint64_t classDataVMAddr,
- const dyld3::MachOAnalyzer::ObjCClassInfo& objcClass, bool isMetaClass) {
- if (isMetaClass) {
- if (skippedPreviousClass) {
- // If the class was bad, then skip the meta class too
- skippedPreviousClass = false;
- return;
- }
- } else {
- skippedPreviousClass = true;
- }
-
- std::string classType = "-";
- if (isMetaClass)
- classType = "+";
- dyld3::MachOAnalyzer::PrintableStringResult classNameResult;
- const char* className = ma->getPrintableString(objcClass.nameVMAddr(pointerSize), classNameResult);
- if (classNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint) {
- return;
- }
-
- const char* superClassName = nullptr;
- if ( ma->inDyldCache() ) {
- if ( objcClass.superclassVMAddr != 0 ) {
- if (isMetaClass) {
- // If we are root class, then our superclass should actually point to our own class
- const uint32_t RO_ROOT = (1<<1);
- if ( objcClass.flags(pointerSize) & RO_ROOT ) {
- auto it = classVMAddrToName.find(objcClass.superclassVMAddr);
- assert(it != classVMAddrToName.end());
- superClassName = it->second;
- } else {
- auto it = metaclassVMAddrToName.find(objcClass.superclassVMAddr);
- assert(it != metaclassVMAddrToName.end());
- superClassName = it->second;
- }
- } else {
- auto it = classVMAddrToName.find(objcClass.superclassVMAddr);
- assert(it != classVMAddrToName.end());
- superClassName = it->second;
- }
- }
- } else {
- // On-disk binary. Lets crack the chain to work out what we are pointing at
- dyld3::MachOAnalyzer::ChainedFixupPointerOnDisk fixup;
- fixup.raw64 = objcClass.superclassVMAddr;
- assert(!fixup.arm64e.authBind.auth);
- if (fixup.arm64e.bind.bind) {
- // Bind to another image. Use the bind table to work out which name to bind to
- const char* symbolName = onDiskChainedFixupBindTargets[fixup.arm64e.bind.ordinal];
- if (isMetaClass) {
- if ( strstr(symbolName, "_OBJC_METACLASS_$_") == symbolName ) {
- superClassName = symbolName + strlen("_OBJC_METACLASS_$_");
- } else {
- // Swift classes don't start with these prefixes so just skip them
- if (objcClass.isSwiftLegacy || objcClass.isSwiftStable)
- return;
- }
- } else {
- if ( strstr(symbolName, "_OBJC_CLASS_$_") == symbolName ) {
- superClassName = symbolName + strlen("_OBJC_CLASS_$_");
- } else {
- // Swift classes don't start with these prefixes so just skip them
- if (objcClass.isSwiftLegacy || objcClass.isSwiftStable)
- return;
- }
- }
- } else {
- // Rebase within this image.
- if (isMetaClass) {
- auto it = onDiskMetaclassVMAddrToName.find(objcClass.superclassVMAddr);
- assert(it != onDiskMetaclassVMAddrToName.end());
- superClassName = it->second;
- } else {
- auto it = onDiskClassVMAddrToName.find(objcClass.superclassVMAddr);
- assert(it != onDiskClassVMAddrToName.end());
- superClassName = it->second;
- }
- }
- }
-
- // Print the methods on this class
- __block Node methodsNode;
- auto visitMethod = ^(uint64_t methodVMAddr, const dyld3::MachOAnalyzer::ObjCMethod& method) {
- dyld3::MachOAnalyzer::PrintableStringResult methodNameResult;
- const char* methodName = ma->getPrintableString(method.nameVMAddr, methodNameResult);
- if (methodNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
- methodsNode.array.push_back(makeNode(classType + methodName));
- };
- ma->forEachObjCMethod(objcClass.baseMethodsVMAddr(pointerSize), rebased,
- visitMethod);
-
- std::optional<Node> properties = getProperties(ma, objcClass.basePropertiesVMAddr(pointerSize));
-
- if (isMetaClass) {
- assert(!classesNode.array.empty());
- Node& currentClassNode = classesNode.array.back();
- assert(currentClassNode.map["className"].value == className);
- if (!methodsNode.array.empty()) {
- Node& currentMethodsNode = currentClassNode.map["methods"];
- currentMethodsNode.array.insert(currentMethodsNode.array.end(),
- methodsNode.array.begin(),
- methodsNode.array.end());
- }
- if (properties.has_value()) {
- Node& currentPropertiesNode = currentClassNode.map["properties"];
- currentPropertiesNode.array.insert(currentPropertiesNode.array.end(),
- properties->array.begin(),
- properties->array.end());
- }
- return;
- }
-
- Node currentClassNode;
- currentClassNode.map["className"] = makeNode(className);
- if ( superClassName != nullptr )
- currentClassNode.map["superClassName"] = makeNode(superClassName);
- if (!methodsNode.array.empty())
- currentClassNode.map["methods"] = methodsNode;
- if (properties.has_value())
- currentClassNode.map["properties"] = properties.value();
-
- // We didn't skip this class so mark it as such
- skippedPreviousClass = false;
-
- classesNode.array.push_back(currentClassNode);
- };
-
- ma->forEachObjCClass(diag, rebased, visitClass);
- return classesNode.array.empty() ? std::optional<Node>() : classesNode;
- };
-
- auto getCategories = ^(const dyld3::MachOAnalyzer* ma) {
- Diagnostics diag;
-
- __block Node categoriesNode;
- auto visitCategory = ^(Diagnostics& diag, uint64_t categoryVMAddr,
- const dyld3::MachOAnalyzer::ObjCCategory& objcCategory) {
- dyld3::MachOAnalyzer::PrintableStringResult categoryNameResult;
- const char* categoryName = ma->getPrintableString(objcCategory.nameVMAddr, categoryNameResult);
- if (categoryNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- const char* className = nullptr;
- if ( ma->inDyldCache() ) {
- auto it = classVMAddrToName.find(objcCategory.clsVMAddr);
- assert(it != classVMAddrToName.end());
- className = it->second;
- } else {
- // On-disk binary. Lets crack the chain to work out what we are pointing at
- dyld3::MachOAnalyzer::ChainedFixupPointerOnDisk fixup;
- fixup.raw64 = objcCategory.clsVMAddr;
- assert(!fixup.arm64e.authBind.auth);
- if (fixup.arm64e.bind.bind) {
- // Bind to another image. Use the bind table to work out which name to bind to
- const char* symbolName = onDiskChainedFixupBindTargets[fixup.arm64e.bind.ordinal];
- if ( strstr(symbolName, "_OBJC_CLASS_$_") == symbolName ) {
- className = symbolName + strlen("_OBJC_CLASS_$_");
- } else {
- // Swift classes don't start with these prefixes so just skip them
- // We don't know that this is a Swift class/category though, but skip it anyway
- return;
- }
- } else {
- auto it = onDiskClassVMAddrToName.find(objcCategory.clsVMAddr);
- if (it == onDiskClassVMAddrToName.end()) {
- // This is an odd binary with perhaps a Swift class. Just skip this entry
- return;
- }
- className = it->second;
- }
- }
-
- // Print the instance methods on this category
- __block Node methodsNode;
- auto visitInstanceMethod = ^(uint64_t methodVMAddr, const dyld3::MachOAnalyzer::ObjCMethod& method) {
- dyld3::MachOAnalyzer::PrintableStringResult methodNameResult;
- const char* methodName = ma->getPrintableString(method.nameVMAddr, methodNameResult);
- if (methodNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
- methodsNode.array.push_back(makeNode(std::string("-") + methodName));
- };
- ma->forEachObjCMethod(objcCategory.instanceMethodsVMAddr, rebased,
- visitInstanceMethod);
-
- // Print the instance methods on this category
- __block Node classMethodsNode;
- auto visitClassMethod = ^(uint64_t methodVMAddr, const dyld3::MachOAnalyzer::ObjCMethod& method) {
- dyld3::MachOAnalyzer::PrintableStringResult methodNameResult;
- const char* methodName = ma->getPrintableString(method.nameVMAddr, methodNameResult);
- if (methodNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
- methodsNode.array.push_back(makeNode(std::string("+") + methodName));
- };
- ma->forEachObjCMethod(objcCategory.classMethodsVMAddr, rebased,
- visitClassMethod);
-
- Node currentCategoryNode;
- currentCategoryNode.map["categoryName"] = makeNode(categoryName);
- currentCategoryNode.map["className"] = makeNode(className);
- if (!methodsNode.array.empty())
- currentCategoryNode.map["methods"] = methodsNode;
- if (std::optional<Node> properties = getProperties(ma, objcCategory.instancePropertiesVMAddr))
- currentCategoryNode.map["properties"] = properties.value();
-
- categoriesNode.array.push_back(currentCategoryNode);
- };
-
- ma->forEachObjCCategory(diag, rebased, visitCategory);
- return categoriesNode.array.empty() ? std::optional<Node>() : categoriesNode;
- };
-
- dyldCache->forEachImage(^(const mach_header *mh, const char *installName) {
- const dyld3::MachOAnalyzer* ma = (const dyld3::MachOAnalyzer*)mh;
-
- Node imageRecord;
- imageRecord.map["imagePath"] = makeNode(installName);
- imageRecord.map["imageType"] = makeNode("cache-dylib");
- std::optional<Node> classes = getClasses(ma);
- std::optional<Node> categories = getCategories(ma);
-
- // Skip emitting images with no objc data
- if (!classes.has_value() && !categories.has_value())
- return;
- if (classes.has_value())
- imageRecord.map["classes"] = classes.value();
- if (categories.has_value())
- imageRecord.map["categories"] = categories.value();
-
- root.array.push_back(imageRecord);
- });
-
- FileSystemPhysical fileSystem;
- dyld3::Platform platform = dyldCache->platform();
- const dyld3::GradedArchs& archs = dyld3::GradedArchs::forName(dyldCache->archName(), true);
-
- dyldCache->forEachLaunchClosure(^(const char *executableRuntimePath, const dyld3::closure::LaunchClosure *closure) {
- Diagnostics diag;
- char realerPath[MAXPATHLEN];
- dyld3::closure::LoadedFileInfo loadedFileInfo = dyld3::MachOAnalyzer::load(diag, fileSystem, executableRuntimePath, archs, platform, realerPath);
- const dyld3::MachOAnalyzer* ma = (const dyld3::MachOAnalyzer*)loadedFileInfo.fileContent;
- uint32_t pointerSize = ma->pointerSize();
-
- // Populate the bind targets for classes from other images
- onDiskChainedFixupBindTargets.clear();
- ma->forEachChainedFixupTarget(diag, ^(int libOrdinal, const char* symbolName, uint64_t addend, bool weakImport, bool& stop) {
- onDiskChainedFixupBindTargets.push_back(symbolName);
- });
- if ( diag.hasError() )
- return;
-
- // Populate the rebase targets for class names
- onDiskMetaclassVMAddrToName.clear();
- onDiskClassVMAddrToName.clear();
- auto visitClass = ^(Diagnostics& diag, uint64_t classVMAddr,
- uint64_t classSuperclassVMAddr, uint64_t classDataVMAddr,
- const dyld3::MachOAnalyzer::ObjCClassInfo& objcClass, bool isMetaClass) {
- dyld3::MachOAnalyzer::PrintableStringResult classNameResult;
- const char* className = ma->getPrintableString(objcClass.nameVMAddr(pointerSize), classNameResult);
- if (classNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- if (isMetaClass)
- onDiskMetaclassVMAddrToName[classVMAddr] = className;
- else
- onDiskClassVMAddrToName[classVMAddr] = className;
- };
-
- ma->forEachObjCClass(diag, rebased, visitClass);
-
- Node imageRecord;
- imageRecord.map["imagePath"] = makeNode(executableRuntimePath);
- imageRecord.map["imageType"] = makeNode("executable");
- std::optional<Node> classes = getClasses(ma);
- std::optional<Node> categories = getCategories(ma);
-
- // Skip emitting images with no objc data
- if (!classes.has_value() && !categories.has_value())
- return;
- if (classes.has_value())
- imageRecord.map["classes"] = classes.value();
- if (categories.has_value())
- imageRecord.map["categories"] = categories.value();
-
- root.array.push_back(imageRecord);
- });
-
- dyldCache->forEachDlopenImage(^(const char *runtimePath, const dyld3::closure::Image *image) {
- Diagnostics diag;
- char realerPath[MAXPATHLEN];
- dyld3::closure::LoadedFileInfo loadedFileInfo = dyld3::MachOAnalyzer::load(diag, fileSystem, runtimePath, archs, platform, realerPath);
- const dyld3::MachOAnalyzer* ma = (const dyld3::MachOAnalyzer*)loadedFileInfo.fileContent;
- uint32_t pointerSize = ma->pointerSize();
-
- // Populate the bind targets for classes from other images
- onDiskChainedFixupBindTargets.clear();
- ma->forEachChainedFixupTarget(diag, ^(int libOrdinal, const char* symbolName, uint64_t addend, bool weakImport, bool& stop) {
- onDiskChainedFixupBindTargets.push_back(symbolName);
- });
- if ( diag.hasError() )
- return;
-
- // Populate the rebase targets for class names
- onDiskMetaclassVMAddrToName.clear();
- onDiskClassVMAddrToName.clear();
- auto visitClass = ^(Diagnostics& diag, uint64_t classVMAddr,
- uint64_t classSuperclassVMAddr, uint64_t classDataVMAddr,
- const dyld3::MachOAnalyzer::ObjCClassInfo& objcClass, bool isMetaClass) {
- dyld3::MachOAnalyzer::PrintableStringResult classNameResult;
- const char* className = ma->getPrintableString(objcClass.nameVMAddr(pointerSize), classNameResult);
- if (classNameResult != dyld3::MachOAnalyzer::PrintableStringResult::CanPrint)
- return;
-
- if (isMetaClass)
- onDiskMetaclassVMAddrToName[classVMAddr] = className;
- else
- onDiskClassVMAddrToName[classVMAddr] = className;
- };
-
- ma->forEachObjCClass(diag, rebased, visitClass);
-
- Node imageRecord;
- imageRecord.map["imagePath"] = makeNode(runtimePath);
- imageRecord.map["imageType"] = makeNode("non-cache-dylib");
- std::optional<Node> classes = getClasses(ma);
- std::optional<Node> categories = getCategories(ma);
-
- // Skip emitting images with no objc data
- if (!classes.has_value() && !categories.has_value())
- return;
- if (classes.has_value())
- imageRecord.map["classes"] = classes.value();
- if (categories.has_value())
- imageRecord.map["categories"] = categories.value();
-
- root.array.push_back(imageRecord);
- });
-
- dyld3::json::printJSON(root, 0, std::cout);
- }
- else if ( options.mode == modeObjCSelectors ) {
- if ( dyldCache->objcOpt() == nullptr ) {
- fprintf(stderr, "Error: could not get optimized objc\n");
- return 1;
- }
- const objc_opt::objc_selopt_t* selectors = dyldCache->objcOpt()->selopt();
- if ( selectors == nullptr ) {
- fprintf(stderr, "Error: could not get optimized objc selectors\n");
- return 1;
- }
-
- std::vector<const char*> selNames;
- for (uint64_t index = 0; index != selectors->capacity; ++index) {
- objc_opt::objc_stringhash_offset_t offset = selectors->offsets()[index];
- if ( offset == 0 )
- continue;
- const char* selName = selectors->getEntryForIndex((uint32_t)index);
- selNames.push_back(selName);
- }
-
- std::sort(selNames.begin(), selNames.end(),
- [](const char* a, const char* b) {
- // Sort by offset, not string value
- return a < b;
- });
-
- auto makeNode = [](std::string str) {
- dyld3::json::Node node;
- node.value = str;
- return node;
- };
-
- dyld3::json::Node root;
- for (const char* selName : selNames) {
- dyld3::json::Node selNode;
- selNode.map["selectorName"] = makeNode(selName);
- selNode.map["offset"] = makeNode(dyld3::json::decimal((uint64_t)selName - (uint64_t)dyldCache));
-
- root.array.push_back(selNode);
- }
-
- dyld3::json::printJSON(root, 0, std::cout);
- }
- 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 modeObjCClasses:
- case modeObjCSelectors:
- case modeExtract:
- break;
- }
- }
- return 0;
-}
-
+
+ if ( options.mode == modeNone ) {
+ fprintf(stderr, "Error: select one of -list, -dependents, -info, -linkedit, or -map\n");
+ usage();
+ exit(1);
+ }
+
+ if ( options.mode != modeSlideInfo ) {
+ 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);
+ }
+ }
+
+ struct stat statbuf;
+ if ( ::stat(sharedCachePath, &statbuf) == -1 ) {
+ fprintf(stderr, "Error: stat() failed for dyld shared cache at %s, errno=%d\n", sharedCachePath, errno);
+ exit(1);
+ }
+
+ int cache_fd = ::open(sharedCachePath, O_RDONLY);
+ if ( cache_fd < 0 ) {
+ fprintf(stderr, "Error: open() failed for shared cache file at %s, errno=%d\n", sharedCachePath, errno);
+ exit(1);
+ }
+ options.mappedCache = ::mmap(NULL, statbuf.st_size, PROT_READ, MAP_PRIVATE, cache_fd, 0);
+ if (options.mappedCache == MAP_FAILED) {
+ fprintf(stderr, "Error: mmap() for shared cache at %s failed, errno=%d\n", sharedCachePath, errno);
+ exit(1);
+ }
+
+ if ( options.mode == modeSlideInfo ) {
+ 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>* dataMapping = &mappings[1];
+ uint64_t dataStartAddress = dataMapping->address();
+ uint64_t dataSize = dataMapping->size();
+ const dyldCacheSlideInfo<LittleEndian>* slideInfoHeader = (dyldCacheSlideInfo<LittleEndian>*)((char*)options.mappedCache+header->slideInfoOffset());
+ printf("slide info version=%d\n", slideInfoHeader->version());
+ 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 ( 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");
+ }
+ printf("image count: %u\n", header->imagesCount());
+ 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, 0x%08llX -> 0x%08llX\n", mappings[i].size()/(1024*1024), mappings[i].address(), mappings[i].address() + mappings[i].size());
+ else if ( mappings[i]. init_prot() & VM_PROT_WRITE )
+ printf(" __DATA %3lluMB, 0x%08llX -> 0x%08llX\n", mappings[i].size()/(1024*1024), mappings[i].address(), mappings[i].address() + mappings[i].size());
+ else if ( mappings[i].init_prot() & VM_PROT_READ )
+ printf(" __LINKEDIT %3lluMB, 0x%08llX -> 0x%08llX\n", mappings[i].size()/(1024*1024), mappings[i].address(), mappings[i].address() + mappings[i].size());
+ }
+ if ( header->codeSignatureOffset() != 0 ) {
+ uint64_t size = statbuf.st_size - header->codeSignatureOffset();
+ uint64_t csAddr = mappings[header->mappingCount()-1].address() + mappings[header->mappingCount()-1].size();
+ printf(" code sign %3lluMB, 0x%08llX -> 0x%08llX\n", size/(1024*1024), csAddr, csAddr + size);
+ }
+ }
+ else {
+ segment_callback_t callback;
+ 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:
+ 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:
+ break;
+ }
+ }
+ else if ( (strncmp((char*)options.mappedCache, "dyld_v1 armv", 14) == 0)
+ || (strncmp((char*)options.mappedCache, "dyld_v1 armv", 13) == 0) ) {
+ 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:
+ break;
+ }
+ }
+ else if ( strcmp((char*)options.mappedCache, "dyld_v1 arm64") == 0 ) {
+ 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:
+ break;
+ }
+ }
+ 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)statbuf.st_size,
+ ^(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;
+}