Loading...
--- dyld/dyld-195.6/launch-cache/dsc_iterator.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
- *
- * Copyright (c) 2009-2010 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,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * 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@
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <Availability.h>
-
-
-#include "dsc_iterator.h"
-#include "dyld_cache_format.h"
-#define NO_ULEB
-#include "Architectures.hpp"
-#include "MachOFileAbstraction.hpp"
-#include "CacheFileAbstraction.hpp"
-
-
-
-namespace dyld {
-
-
- // convert an address in the shared region where the cache would normally be mapped, into an address where the cache is currently mapped
- template <typename E>
- const uint8_t* mappedAddress(const uint8_t* cache, uint64_t addr)
- {
- const dyldCacheHeader<E>* header = (dyldCacheHeader<E>*)cache;
- const dyldCacheFileMapping<E>* mappings = (dyldCacheFileMapping<E>*)&cache[header->mappingOffset()];
- for (uint32_t i=0; i < header->mappingCount(); ++i) {
- if ( (mappings[i].address() <= addr) && (addr < (mappings[i].address() + mappings[i].size())) ) {
- return &cache[mappings[i].file_offset() + addr - mappings[i].address()];
- }
- }
- return NULL;
- }
-
- // call the callback block on each segment in this image
- template <typename A>
- void walkSegments(const uint8_t* cache, const char* dylibPath, const uint8_t* machHeader, uint64_t slide, dyld_shared_cache_iterator_slide_t callback)
- {
- typedef typename A::P P;
- typedef typename A::P::E E;
- const macho_header<P>* mh = (const macho_header<P>*)machHeader;
- const macho_load_command<P>* const cmds = (macho_load_command<P>*)(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) {
- if ( cmd->cmd() == macho_segment_command<P>::CMD ) {
- macho_segment_command<P>* segCmd = (macho_segment_command<P>*)cmd;
- uint64_t fileOffset = segCmd->fileoff();
- // work around until <rdar://problem/7022345> is fixed
- if ( fileOffset == 0 ) {
- fileOffset = (machHeader - cache);
- }
- uint64_t sizem = segCmd->vmsize();
- if ( strcmp(segCmd->segname(), "__LINKEDIT") == 0 ) {
- // clip LINKEDIT size if bigger than cache file
- const dyldCacheHeader<E>* header = (dyldCacheHeader<E>*)cache;
- const dyldCacheFileMapping<E>* mappings = (dyldCacheFileMapping<E>*)&cache[header->mappingOffset()];
- if ( mappings[2].file_offset() <= fileOffset ) {
- if ( sizem > mappings[2].size() )
- sizem = mappings[2].file_offset() + mappings[2].size() - fileOffset;
- }
- }
- callback(dylibPath, segCmd->segname(), fileOffset, sizem, segCmd->vmaddr()+slide, slide);
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
- }
-
-
- // call walkSegments on each image in the cache
- template <typename A>
- int walkImages(const uint8_t* cache, dyld_shared_cache_iterator_slide_t callback)
- {
- typedef typename A::P::E E;
- typedef typename A::P P;
- typedef typename A::P::uint_t pint_t;
- const dyldCacheHeader<E>* header = (dyldCacheHeader<E>*)cache;
- uint64_t slide = 0;
- if ( header->mappingOffset() >= 0x48 ) {
- const dyldCacheFileMapping<E>* mappings = (dyldCacheFileMapping<E>*)&cache[header->mappingOffset()];
- uint64_t storedPointerToHeader = P::getP(*((pint_t*)&cache[mappings[1].file_offset()]));
- slide = storedPointerToHeader - mappings[0].address();
- }
- const dyldCacheImageInfo<E>* dylibs = (dyldCacheImageInfo<E>*)&cache[header->imagesOffset()];
- for (uint32_t i=0; i < header->imagesCount(); ++i) {
- const char* dylibPath = (char*)cache + dylibs[i].pathFileOffset();
- const uint8_t* machHeader = mappedAddress<E>(cache, dylibs[i].address());
- walkSegments<A>(cache, dylibPath, machHeader, slide, callback);
- }
- return 0;
- }
-
-}
-
-
-// Given a pointer to an in-memory copy of a dyld shared cache file,
-// this routine will call the callback block once for each segment
-// in each dylib in the shared cache file.
-// Returns -1 if there was an error, otherwise 0.
-int dyld_shared_cache_iterate_segments_with_slide(const void* shared_cache_file, dyld_shared_cache_iterator_slide_t callback)
-{
- const uint8_t* cache = (uint8_t*)shared_cache_file;
- if ( strcmp((char*)cache, "dyld_v1 i386") == 0 )
- return dyld::walkImages<x86>(cache, callback);
- else if ( strcmp((char*)cache, "dyld_v1 x86_64") == 0 )
- return dyld::walkImages<x86_64>(cache, callback);
- else if ( strcmp((char*)cache, "dyld_v1 ppc") == 0 )
- return dyld::walkImages<ppc>(cache, callback);
- else if ( strcmp((char*)cache, "dyld_v1 armv5") == 0 )
- return dyld::walkImages<arm>(cache, callback);
- else if ( strcmp((char*)cache, "dyld_v1 armv6") == 0 )
- return dyld::walkImages<arm>(cache, callback);
- else if ( strcmp((char*)cache, "dyld_v1 armv7") == 0 )
- return dyld::walkImages<arm>(cache, callback);
- else
- return -1;
-}
-
-// implement non-block version by calling block version
-int dyld_shared_cache_iterate_segments_with_slide_nb(const void* shared_cache_file, dyld_shared_cache_iterator_slide_nb_t func, void* userData)
-{
- return dyld_shared_cache_iterate_segments_with_slide(shared_cache_file, ^(const char* dylibName, const char* segName,
- uint64_t offset, uint64_t size, uint64_t mappedddress, uint64_t slide) {
- (*func)(dylibName, segName, offset, size, mappedddress, slide, userData);
- });
-}
-
-
-// implement non-slide version by wrapping slide version in block
-int dyld_shared_cache_iterate_segments(const void* shared_cache_file, dyld_shared_cache_iterator_t callback)
-{
- dyld_shared_cache_iterator_slide_t wrapper_cb = ^(const char* dylibName, const char* segName, uint64_t offset,
- uint64_t size, uint64_t mappedddress, uint64_t slide) {
- callback(dylibName, segName, offset, size, mappedddress);
- };
- return dyld_shared_cache_iterate_segments_with_slide(shared_cache_file, wrapper_cb);
-}
-
-// implement non-slide,non-block version by wrapping slide version in block
-int dyld_shared_cache_iterate_segments_nb(const void* shared_cache_file, dyld_shared_cache_iterator_nb_t func, void* userData)
-{
- return dyld_shared_cache_iterate_segments_with_slide(shared_cache_file, ^(const char* dylibName, const char* segName,
- uint64_t offset, uint64_t size, uint64_t mappedddress, uint64_t slide) {
- (*func)(dylibName, segName, offset, size, mappedddress, userData);
- });
-}
-