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--- dyld/dyld-239.4/launch-cache/dyld_shared_cache_util.cpp
+++ dyld/dyld-551.4/launch-cache/dyld_shared_cache_util.cpp
@@ -26,6 +26,7 @@
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
+#include <dlfcn.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
@@ -33,15 +34,19 @@
#include <sys/syslimits.h>
#include <mach-o/arch.h>
#include <mach-o/loader.h>
+#include <mach-o/dyld.h>
+#include <mach/mach.h>
#include <map>
+#include <vector>
#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"
enum Mode {
modeNone,
@@ -49,32 +54,64 @@
modeMap,
modeDependencies,
modeSlideInfo,
+ modeAcceleratorInfo,
+ modeTextInfo,
modeLinkEdit,
- modeInfo
+ modeLocalSymbols,
+ 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;
};
-
-
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");
-}
+ fprintf(stderr, "Usage: dyld_shared_cache_util -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit | -map | -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 );
+}
+#endif
/*
* Get the path to the native shared cache for this host
@@ -83,19 +120,26 @@
#if __i386__
return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "i386";
#elif __x86_64__
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "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 __ARM_ARCH_7K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7k";
+#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
@@ -173,6 +217,8 @@
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;;
@@ -189,6 +235,22 @@
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);
}
@@ -279,7 +341,7 @@
static void checkMode(Mode mode) {
if ( mode != modeNone ) {
- fprintf(stderr, "Error: select one of: -list, -dependents, -info, -slide_info, -linkedit, or -map\n");
+ fprintf(stderr, "Error: select one of: -list, -dependents, -info, -slide_info, -linkedit, -map, -extract, or -size\n");
usage();
exit(1);
}
@@ -294,8 +356,10 @@
options.printUUIDs = false;
options.printVMAddrs = false;
options.printDylibVersions = false;
+ options.printInodes = false;
options.dependentsOfPath = NULL;
-
+ options.extractionDir = NULL;
+
for (uint32_t i = 1; i < argc; i++) {
const char* opt = argv[i];
if (opt[0] == '-') {
@@ -324,13 +388,42 @@
else if (strcmp(opt, "-slide_info") == 0) {
checkMode(options.mode);
options.mode = modeSlideInfo;
- }
+ }
+ 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, "-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];
+ if ( i >= argc ) {
+ fprintf(stderr, "Error: option -extract requires a directory argument\n");
+ usage();
+ exit(1);
+ }
+ }
else if (strcmp(opt, "-uuid") == 0) {
options.printUUIDs = true;
+ }
+ else if (strcmp(opt, "-inode") == 0) {
+ options.printInodes = true;
}
else if (strcmp(opt, "-versions") == 0) {
options.printDylibVersions = true;
@@ -383,7 +476,7 @@
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);
+ options.mappedCache = ::mmap(NULL, (size_t)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);
@@ -401,14 +494,46 @@
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");
+ 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 ( 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);
+ 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]);
+ }
+ }
}
}
else if ( options.mode == modeInfo ) {
@@ -425,20 +550,247 @@
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 simulator = *((uint32_t*)(((char*)header) + 0xDC));
+ switch (platform) {
+ case 1:
+ printf("platform: macOS\n");
+ break;
+ case 2:
+ if ( simulator & 0x400 )
+ printf("platform: iOS simulator\n");
+ else
+ printf("platform: iOS\n");
+ break;
+ case 3:
+ if ( simulator & 0x400 )
+ printf("platform: tvOS simulator\n");
+ else
+ printf("platform: tvOS\n");
+ break;
+ case 4:
+ if ( simulator & 0x400 )
+ 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("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 %lluMB\n", mappings[i].size()/(1024*1024));
+ 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 %lluMB\n", mappings[i].size()/(1024*1024));
+ 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 %lluMB\n", mappings[i].size()/(1024*1024));
- }
+ 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 = statbuf.st_size - 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
+ }
+ }
+ 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;
+ segment_callback_t callback = nullptr;
if ( strcmp((char*)options.mappedCache, "dyld_v1 i386") == 0 ) {
switch ( options.mode ) {
case modeList:
@@ -453,13 +805,21 @@
case modeLinkEdit:
callback = process_linkedit<x86>;
break;
+ case modeSize:
+ callback = collect_size<x86>;
+ break;
case modeNone:
case modeInfo:
case modeSlideInfo:
+ case modeAcceleratorInfo:
+ case modeTextInfo:
+ case modeLocalSymbols:
+ case modeExtract:
break;
}
}
- else if ( strcmp((char*)options.mappedCache, "dyld_v1 x86_64") == 0 ) {
+ 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>;
@@ -473,9 +833,16 @@
case modeLinkEdit:
callback = process_linkedit<x86_64>;
break;
+ case modeSize:
+ callback = collect_size<x86_64>;
+ break;
case modeNone:
case modeInfo:
case modeSlideInfo:
+ case modeAcceleratorInfo:
+ case modeTextInfo:
+ case modeLocalSymbols:
+ case modeExtract:
break;
}
}
@@ -494,9 +861,44 @@
case modeLinkEdit:
callback = process_linkedit<arm>;
break;
+ case modeSize:
+ callback = collect_size<arm>;
+ break;
case modeNone:
case modeInfo:
case modeSlideInfo:
+ case modeAcceleratorInfo:
+ case modeTextInfo:
+ case modeLocalSymbols:
+ case modeExtract:
+ break;
+ }
+ }
+ else if ( (strcmp((char*)options.mappedCache, "dyld_v1 arm64") == 0)
+ || (strcmp((char*)options.mappedCache, "dyld_v1 arm64e") == 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:
+ case modeAcceleratorInfo:
+ case modeTextInfo:
+ case modeLocalSymbols:
+ case modeExtract:
break;
}
}
@@ -504,10 +906,10 @@
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, statbuf.st_size,
+ 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);
});
@@ -522,7 +924,13 @@
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);