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--- dyld/dyld-640.2/src/dyld_gdb.cpp
+++ dyld/dyld-45.1/src/dyld_gdb.cpp
@@ -1,6 +1,6 @@
/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2004-2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
@@ -31,115 +31,158 @@
#include <vector>
#include "mach-o/dyld_gdb.h"
-#include "mach-o/dyld_images.h"
-#include "mach-o/dyld_process_info.h"
-#include "Tracing.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
+
+
+// old gdb interface to dyld only supported on 32-bit ppc and i386 (not ppc64_
+#if OLD_GDB_DYLD_INTERFACE
+
+unsigned int gdb_dyld_version = 2;
+
+
+/*
+ * gdb_dyld_state_changed() is a dummy routine called by dyld after images get
+ * added or removed/ Gdb is expected to set a break point at
+ * gdb_dyld_state_changed() then re-read dyld internal data as specified in
+ * the header file dyld_gdb.h
+ */
+void gdb_dyld_state_changed()
+{
+ // do nothing
+}
+
+#define NLIBRARY_IMAGES 200
+#define NOBJECT_IMAGES 1
+
+
+struct image {
+ const char* physical_name; // physical image name (file name)
+ uint32_t vmaddr_slide; // the slide from the staticly linked address
+ const mach_header* mh; // address of the mach header of the image
+ uint32_t valid; // TRUE if this is struct is valid
+ const char* name; // image name for reporting errors
+};
+
+
+struct library_images {
+ struct image images[NLIBRARY_IMAGES];
+ uint32_t nimages;
+ struct library_images* next_images;
+};
+struct object_images {
+ struct image images[NOBJECT_IMAGES];
+ uint32_t nimages;
+ struct library_images* next_images;
+};
+
+unsigned int gdb_nobject_images = NOBJECT_IMAGES;
+unsigned int gdb_object_image_size = sizeof(image);
+unsigned int gdb_nlibrary_images = NLIBRARY_IMAGES;
+unsigned int gdb_library_image_size = sizeof(image);
+
+extern "C" {
+object_images object_images = { {}, 0 , NULL };
+library_images library_images = { {}, 0 , NULL };
+void send_event(const struct dyld_event* event);
+}
+
+
+enum dyld_event_type {
+ DYLD_IMAGE_ADDED = 0,
+ DYLD_IMAGE_REMOVED = 5
+};
+
+struct dyld_event {
+ enum dyld_event_type type;
+ const struct mach_header* header;
+ uintptr_t slide;
+};
+
+
+// gdb only notices changes bundles/dylibs loaded at runtime
+// if the "send_event()" function in dyld is called...
+void send_event(const struct dyld_event* event);
+void (*send_event_ptr)(const struct dyld_event* event) = &send_event;
+
+void addImageForgdb(const mach_header* mh, uintptr_t slide, const char* physicalPath, const char* logicalPath)
+{
+ struct library_images* li = &library_images;
+ while ( li->nimages >= NLIBRARY_IMAGES ) {
+ if ( li->next_images == NULL ) {
+ struct library_images* li2 = new struct library_images();
+ li2->nimages = 0;
+ li2->next_images = NULL;
+ li->next_images = li2;
+ li = li2;
+ }
+ else {
+ li = li->next_images;
+ }
+ }
+ image* info = &li->images[li->nimages++];
+ info->physical_name = physicalPath;
+ info->vmaddr_slide = slide;
+ info->mh = mh;
+ info->valid = 1;
+ info->name = logicalPath;
+
+ // ping gdb about change
+ dyld_event event;
+ event.type = DYLD_IMAGE_ADDED;
+ event.header = mh;
+ event.slide = slide;
+
+ // we have to indirect through a function pointer to keep gcc-3.5 from inlining away the function call
+ // rdar://problem/3830560
+ (*send_event_ptr)(&event);
+}
+
+// move this to after use, otherwise gcc will see it has an empty implementation and
+// optimize away the call site
+void send_event(const struct dyld_event* event)
+{
+ // This function exists to let gdb set a break point
+ // and catch libraries being added...
+}
+
+
+void removeImageForgdb(const mach_header* mh)
+{
+ for (struct library_images* li = &library_images; li != NULL; li = li->next_images) {
+ for( uint32_t n=0; n < li->nimages; ++n) {
+ struct image* image = &li->images[n];
+ if ( image->mh == mh ) {
+ image->physical_name = NULL;
+ image->vmaddr_slide = 0;
+ image->mh = 0;
+ image->valid = 0;
+ image->name = NULL;
+ return;
+ }
+ }
+ }
+}
+
#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;
+ dyld_all_image_infos.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[])
-{
+ dyld_all_image_infos.infoArrayCount = sImageInfos.size();
+
+ // set infoArray back to base address of vector
+ dyld_all_image_infos.infoArray = &sImageInfos[0];
+
// 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];
+ dyld_all_image_infos.notification(dyld_image_adding, infoCount, info);
}
void removeImageFromAllImages(const struct mach_header* loadAddress)
@@ -147,7 +190,7 @@
dyld_image_info goingAway;
// set infoArray to NULL to denote it is in-use
- dyld::gProcessInfo->infoArray = NULL;
+ dyld_all_image_infos.infoArray = NULL;
// remove image from infoArray
for (std::vector<dyld_image_info>::iterator it=sImageInfos.begin(); it != sImageInfos.end(); it++) {
@@ -157,89 +200,28 @@
break;
}
}
- dyld::gProcessInfo->infoArrayCount = (uint32_t)sImageInfos.size();
+ dyld_all_image_infos.infoArrayCount = 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];
+ dyld_all_image_infos.infoArray = &sImageInfos[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[])
- {
- dyld3::ScopedTimer(DBG_DYLD_GDB_IMAGE_NOTIFIER, 0, 0, 0);
- 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
+ dyld_all_image_infos.notification(dyld_image_removing, 1, &goingAway);
+}
+
+
+static void gdb_image_notifier(enum dyld_image_mode mode, uint32_t infoCount, const dyld_image_info info[])
+{
+ // do nothing
+ // gdb sets a break point here to catch notifications
+ //fprintf(stderr, "dyld: gdb_image_notifier(%s, %d, ...)\n", mode ? "dyld_image_removing" : "dyld_image_adding", infoCount);
+ //for (uint32_t i=0; i < dyld_all_image_infos.infoArrayCount; ++i)
+ // fprintf(stderr, "dyld: %d loading at %p %s\n", i, dyld_all_image_infos.infoArray[i].imageLoadAddress, dyld_all_image_infos.infoArray[i].imageFilePath);
+}
+
+
+
+struct dyld_all_image_infos dyld_all_image_infos = { 1, 0, NULL, &gdb_image_notifier, false };
+
+