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+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
+ *
+ * Copyright (c) 2004-2009 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 <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <mach-o/loader.h>
+
+#include <vector>
+
+#include "mach-o/dyld_gdb.h"
+#include "mach-o/dyld_images.h"
+#include "mach-o/dyld_process_info.h"
+#include "ImageLoader.h"
+#include "dyld.h"
+
+extern "C" void _dyld_debugger_notification(enum dyld_notify_mode mode, unsigned long count, uint64_t machHeaders[]);
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ #define INITIAL_UUID_IMAGE_COUNT 4
+#else
+ #define INITIAL_UUID_IMAGE_COUNT 32
+#endif
+
+VECTOR_NEVER_DESTRUCTED(dyld_image_info);
+VECTOR_NEVER_DESTRUCTED(dyld_uuid_info);
+
+static std::vector<dyld_image_info> sImageInfos;
+static std::vector<dyld_uuid_info> sImageUUIDs;
+
+size_t allImagesCount()
+{
+ return sImageInfos.size();
+}
+
+const mach_header* allImagesIndexedMachHeader(uint32_t index)
+{
+ if ( index < sImageInfos.size() )
+ return sImageInfos[index].imageLoadAddress;
+ else
+ return NULL;
+}
+
+const char* allImagesIndexedPath(uint32_t index)
+{
+ if ( index < sImageInfos.size() )
+ return sImageInfos[index].imageFilePath;
+ else
+ return NULL;
+}
+
+
+void addImagesToAllImages(uint32_t infoCount, const dyld_image_info info[])
+{
+ // make initial size large enough that we probably won't need to re-alloc it
+ if ( sImageInfos.size() == 0 )
+ sImageInfos.reserve(INITIAL_IMAGE_COUNT);
+ if ( sImageUUIDs.capacity() == 0 )
+ sImageUUIDs.reserve(4);
+ // set infoArray to NULL to denote it is in-use
+ dyld::gProcessInfo->infoArray = NULL;
+
+ // append all new images
+ for (uint32_t i=0; i < infoCount; ++i)
+ sImageInfos.push_back(info[i]);
+ dyld::gProcessInfo->infoArrayCount = (uint32_t)sImageInfos.size();
+ dyld::gProcessInfo->infoArrayChangeTimestamp = mach_absolute_time();
+
+ // set infoArray back to base address of vector (other process can now read)
+ dyld::gProcessInfo->infoArray = &sImageInfos[0];
+}
+
+#if TARGET_IPHONE_SIMULATOR
+// called once in dyld_sim start up to copy image list from host dyld to sImageInfos
+void syncProcessInfo()
+{
+ // may want to set version field of gProcessInfo if it might be different than host
+ if ( sImageInfos.size() == 0 ) {
+ sImageInfos.reserve(INITIAL_IMAGE_COUNT);
+ if ( dyld::gProcessInfo->infoArray != NULL ) {
+ for (uint32_t i=0; i < dyld::gProcessInfo->infoArrayCount; ++i) {
+ sImageInfos.push_back(dyld::gProcessInfo->infoArray[i]);
+ }
+ dyld::gProcessInfo->infoArray = &sImageInfos[0];
+ dyld::gProcessInfo->infoArrayCount = (uint32_t)sImageInfos.size();
+ }
+ }
+ dyld::gProcessInfo->notification(dyld_image_info_change, 0, NULL);
+}
+#endif
+
+const char* notifyGDB(enum dyld_image_states state, uint32_t infoCount, const dyld_image_info info[])
+{
+ // tell gdb that about the new images
+ uint64_t t0 = mach_absolute_time();
+ dyld::gProcessInfo->notification(dyld_image_adding, infoCount, info);
+ uint64_t t1 = mach_absolute_time();
+ ImageLoader::fgTotalDebuggerPausedTime += (t1-t0);
+
+ // <rdar://problem/7739489> record initial count of images
+ // so CrashReporter can note which images were dynamically loaded
+ if ( dyld::gProcessInfo->initialImageCount == 0 )
+ dyld::gProcessInfo->initialImageCount = dyld::gProcessInfo->infoArrayCount;
+ return NULL;
+}
+
+
+
+void addNonSharedCacheImageUUID(const dyld_uuid_info& info)
+{
+ // set uuidArray to NULL to denote it is in-use
+ dyld::gProcessInfo->uuidArray = NULL;
+
+ // append all new images
+ sImageUUIDs.push_back(info);
+ dyld::gProcessInfo->uuidArrayCount = sImageUUIDs.size();
+
+ // set uuidArray back to base address of vector (other process can now read)
+ dyld::gProcessInfo->uuidArray = &sImageUUIDs[0];
+}
+
+void removeImageFromAllImages(const struct mach_header* loadAddress)
+{
+ dyld_image_info goingAway;
+
+ // set infoArray to NULL to denote it is in-use
+ dyld::gProcessInfo->infoArray = NULL;
+
+ // remove image from infoArray
+ for (std::vector<dyld_image_info>::iterator it=sImageInfos.begin(); it != sImageInfos.end(); it++) {
+ if ( it->imageLoadAddress == loadAddress ) {
+ goingAway = *it;
+ sImageInfos.erase(it);
+ break;
+ }
+ }
+ dyld::gProcessInfo->infoArrayCount = (uint32_t)sImageInfos.size();
+
+ // set infoArray back to base address of vector
+ dyld::gProcessInfo->infoArray = &sImageInfos[0];
+
+
+ // set uuidArrayCount to NULL to denote it is in-use
+ dyld::gProcessInfo->uuidArray = NULL;
+
+ // remove image from infoArray
+ for (std::vector<dyld_uuid_info>::iterator it=sImageUUIDs.begin(); it != sImageUUIDs.end(); it++) {
+ if ( it->imageLoadAddress == loadAddress ) {
+ sImageUUIDs.erase(it);
+ break;
+ }
+ }
+ dyld::gProcessInfo->uuidArrayCount = sImageUUIDs.size();
+ dyld::gProcessInfo->infoArrayChangeTimestamp = mach_absolute_time();
+
+ // set infoArray back to base address of vector
+ dyld::gProcessInfo->uuidArray = &sImageUUIDs[0];
+
+ // tell gdb that about the new images
+ dyld::gProcessInfo->notification(dyld_image_removing, 1, &goingAway);
+}
+
+
+#if TARGET_IPHONE_SIMULATOR
+ namespace dyld {
+ struct dyld_all_image_infos* gProcessInfo = NULL;
+ }
+#else
+
+ static void gdb_image_notifier(enum dyld_image_mode mode, uint32_t infoCount, const dyld_image_info info[])
+ {
+ uint64_t machHeaders[infoCount];
+ for (uint32_t i=0; i < infoCount; ++i) {
+ machHeaders[i] = (uintptr_t)(info[i].imageLoadAddress);
+ }
+ switch ( mode ) {
+ case dyld_image_adding:
+ _dyld_debugger_notification(dyld_notify_adding, infoCount, machHeaders);
+ break;
+ case dyld_image_removing:
+ _dyld_debugger_notification(dyld_notify_removing, infoCount, machHeaders);
+ break;
+ default:
+ break;
+ }
+ // do nothing
+ // gdb sets a break point here to catch notifications
+ //dyld::log("dyld: gdb_image_notifier(%s, %d, ...)\n", mode ? "dyld_image_removing" : "dyld_image_adding", infoCount);
+ //for (uint32_t i=0; i < infoCount; ++i)
+ // dyld::log("dyld: %d loading at %p %s\n", i, info[i].imageLoadAddress, info[i].imageFilePath);
+ //for (uint32_t i=0; i < dyld::gProcessInfo->infoArrayCount; ++i)
+ // dyld::log("dyld: %d loading at %p %s\n", i, dyld::gProcessInfo->infoArray[i].imageLoadAddress, dyld::gProcessInfo->infoArray[i].imageFilePath);
+ }
+
+ // only used with accelerator tables and ASan which images need to be re-loaded
+ void resetAllImages()
+ {
+ sImageInfos.clear();
+ sImageUUIDs.clear();
+ _dyld_debugger_notification(dyld_notify_remove_all, 0, NULL);
+ }
+
+ extern void* __dso_handle;
+ #define STR(s) # s
+ #define XSTR(s) STR(s)
+
+ struct dyld_all_image_infos dyld_all_image_infos __attribute__ ((section ("__DATA,__all_image_info")))
+ = {
+ 15, 0, NULL, &gdb_image_notifier, false, false, (const mach_header*)&__dso_handle, NULL,
+ XSTR(DYLD_VERSION), NULL, 0, NULL, 0, 0, NULL, &dyld_all_image_infos,
+ 0, 0, NULL, NULL, NULL, 0, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,},
+ 0, 0, "/usr/lib/dyld", {0}, {0}
+ };
+
+ struct dyld_shared_cache_ranges dyld_shared_cache_ranges;
+
+ namespace dyld {
+ struct dyld_all_image_infos* gProcessInfo = &dyld_all_image_infos;
+ }
+#endif
+