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authorDimitry Andric <dim@FreeBSD.org>2019-08-20 18:01:57 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-08-20 18:01:57 +0000
commit88c643b6fec27eec436c8d138fee6346e92337d6 (patch)
tree82cd13b2f3cde1c9e5f79689ba4e6ba67694843f /source/Plugins/DynamicLoader
parent94994d372d014ce4c8758b9605d63fae651bd8aa (diff)
Notes
Diffstat (limited to 'source/Plugins/DynamicLoader')
-rw-r--r--source/Plugins/DynamicLoader/CMakeLists.txt6
-rw-r--r--source/Plugins/DynamicLoader/Darwin-Kernel/CMakeLists.txt13
-rw-r--r--source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp1583
-rw-r--r--source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h307
-rw-r--r--source/Plugins/DynamicLoader/Hexagon-DYLD/CMakeLists.txt10
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/CMakeLists.txt16
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp1143
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h241
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp548
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h118
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp1207
-rw-r--r--source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h182
-rw-r--r--source/Plugins/DynamicLoader/POSIX-DYLD/CMakeLists.txt15
-rw-r--r--source/Plugins/DynamicLoader/Static/CMakeLists.txt10
-rw-r--r--source/Plugins/DynamicLoader/Windows-DYLD/CMakeLists.txt9
15 files changed, 0 insertions, 5408 deletions
diff --git a/source/Plugins/DynamicLoader/CMakeLists.txt b/source/Plugins/DynamicLoader/CMakeLists.txt
deleted file mode 100644
index 9f3b2ab0e50f..000000000000
--- a/source/Plugins/DynamicLoader/CMakeLists.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-add_subdirectory(Darwin-Kernel)
-add_subdirectory(MacOSX-DYLD)
-add_subdirectory(POSIX-DYLD)
-add_subdirectory(Static)
-add_subdirectory(Hexagon-DYLD)
-add_subdirectory(Windows-DYLD)
diff --git a/source/Plugins/DynamicLoader/Darwin-Kernel/CMakeLists.txt b/source/Plugins/DynamicLoader/Darwin-Kernel/CMakeLists.txt
deleted file mode 100644
index ffc797b7475b..000000000000
--- a/source/Plugins/DynamicLoader/Darwin-Kernel/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderDarwinKernel PLUGIN
- DynamicLoaderDarwinKernel.cpp
-
- LINK_LIBS
- lldbBreakpoint
- lldbCore
- lldbHost
- lldbInterpreter
- lldbSymbol
- lldbTarget
- lldbUtility
- lldbPluginPlatformMacOSX
- )
diff --git a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp b/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
deleted file mode 100644
index 3a80c68dd4d7..000000000000
--- a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
+++ /dev/null
@@ -1,1583 +0,0 @@
-//===-- DynamicLoaderDarwinKernel.cpp -----------------------------*- C++
-//-*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Plugins/Platform/MacOSX/PlatformDarwinKernel.h"
-#include "lldb/Breakpoint/StoppointCallbackContext.h"
-#include "lldb/Core/Debugger.h"
-#include "lldb/Core/Module.h"
-#include "lldb/Core/ModuleSpec.h"
-#include "lldb/Core/PluginManager.h"
-#include "lldb/Core/Section.h"
-#include "lldb/Core/StreamFile.h"
-#include "lldb/Host/Symbols.h"
-#include "lldb/Interpreter/OptionValueProperties.h"
-#include "lldb/Symbol/ObjectFile.h"
-#include "lldb/Target/OperatingSystem.h"
-#include "lldb/Target/RegisterContext.h"
-#include "lldb/Target/StackFrame.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Target/Thread.h"
-#include "lldb/Target/ThreadPlanRunToAddress.h"
-#include "lldb/Utility/DataBuffer.h"
-#include "lldb/Utility/DataBufferHeap.h"
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/State.h"
-
-#include "DynamicLoaderDarwinKernel.h"
-
-//#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
-#ifdef ENABLE_DEBUG_PRINTF
-#include <stdio.h>
-#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
-#else
-#define DEBUG_PRINTF(fmt, ...)
-#endif
-
-using namespace lldb;
-using namespace lldb_private;
-
-// Progressively greater amounts of scanning we will allow For some targets
-// very early in startup, we can't do any random reads of memory or we can
-// crash the device so a setting is needed that can completely disable the
-// KASLR scans.
-
-enum KASLRScanType {
- eKASLRScanNone = 0, // No reading into the inferior at all
- eKASLRScanLowgloAddresses, // Check one word of memory for a possible kernel
- // addr, then see if a kernel is there
- eKASLRScanNearPC, // Scan backwards from the current $pc looking for kernel;
- // checking at 96 locations total
- eKASLRScanExhaustiveScan // Scan through the entire possible kernel address
- // range looking for a kernel
-};
-
-static constexpr OptionEnumValueElement g_kaslr_kernel_scan_enum_values[] = {
- {eKASLRScanNone, "none",
- "Do not read memory looking for a Darwin kernel when attaching."},
- {eKASLRScanLowgloAddresses, "basic", "Check for the Darwin kernel's load "
- "addr in the lowglo page "
- "(boot-args=debug) only."},
- {eKASLRScanNearPC, "fast-scan", "Scan near the pc value on attach to find "
- "the Darwin kernel's load address."},
- {eKASLRScanExhaustiveScan, "exhaustive-scan",
- "Scan through the entire potential address range of Darwin kernel (only "
- "on 32-bit targets)."}};
-
-static constexpr PropertyDefinition g_properties[] = {
- {"load-kexts", OptionValue::eTypeBoolean, true, true, NULL, {},
- "Automatically loads kext images when attaching to a kernel."},
- {"scan-type", OptionValue::eTypeEnum, true, eKASLRScanNearPC, NULL,
- OptionEnumValues(g_kaslr_kernel_scan_enum_values),
- "Control how many reads lldb will make while searching for a Darwin "
- "kernel on attach."}};
-
-enum { ePropertyLoadKexts, ePropertyScanType };
-
-class DynamicLoaderDarwinKernelProperties : public Properties {
-public:
- static ConstString &GetSettingName() {
- static ConstString g_setting_name("darwin-kernel");
- return g_setting_name;
- }
-
- DynamicLoaderDarwinKernelProperties() : Properties() {
- m_collection_sp.reset(new OptionValueProperties(GetSettingName()));
- m_collection_sp->Initialize(g_properties);
- }
-
- virtual ~DynamicLoaderDarwinKernelProperties() {}
-
- bool GetLoadKexts() const {
- const uint32_t idx = ePropertyLoadKexts;
- return m_collection_sp->GetPropertyAtIndexAsBoolean(
- NULL, idx, g_properties[idx].default_uint_value != 0);
- }
-
- KASLRScanType GetScanType() const {
- const uint32_t idx = ePropertyScanType;
- return (KASLRScanType)m_collection_sp->GetPropertyAtIndexAsEnumeration(
- NULL, idx, g_properties[idx].default_uint_value);
- }
-};
-
-typedef std::shared_ptr<DynamicLoaderDarwinKernelProperties>
- DynamicLoaderDarwinKernelPropertiesSP;
-
-static const DynamicLoaderDarwinKernelPropertiesSP &GetGlobalProperties() {
- static DynamicLoaderDarwinKernelPropertiesSP g_settings_sp;
- if (!g_settings_sp)
- g_settings_sp.reset(new DynamicLoaderDarwinKernelProperties());
- return g_settings_sp;
-}
-
-//----------------------------------------------------------------------
-// Create an instance of this class. This function is filled into the plugin
-// info class that gets handed out by the plugin factory and allows the lldb to
-// instantiate an instance of this class.
-//----------------------------------------------------------------------
-DynamicLoader *DynamicLoaderDarwinKernel::CreateInstance(Process *process,
- bool force) {
- if (!force) {
- // If the user provided an executable binary and it is not a kernel, this
- // plugin should not create an instance.
- Module *exe_module = process->GetTarget().GetExecutableModulePointer();
- if (exe_module) {
- ObjectFile *object_file = exe_module->GetObjectFile();
- if (object_file) {
- if (object_file->GetStrata() != ObjectFile::eStrataKernel) {
- return NULL;
- }
- }
- }
-
- // If the target's architecture does not look like an Apple environment,
- // this plugin should not create an instance.
- const llvm::Triple &triple_ref =
- process->GetTarget().GetArchitecture().GetTriple();
- switch (triple_ref.getOS()) {
- case llvm::Triple::Darwin:
- case llvm::Triple::MacOSX:
- case llvm::Triple::IOS:
- case llvm::Triple::TvOS:
- case llvm::Triple::WatchOS:
- // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
- if (triple_ref.getVendor() != llvm::Triple::Apple) {
- return NULL;
- }
- break;
- // If we have triple like armv7-unknown-unknown, we should try looking for
- // a Darwin kernel.
- case llvm::Triple::UnknownOS:
- break;
- default:
- return NULL;
- break;
- }
- }
-
- // At this point if there is an ExecutableModule, it is a kernel and the
- // Target is some variant of an Apple system. If the Process hasn't provided
- // the kernel load address, we need to look around in memory to find it.
-
- const addr_t kernel_load_address = SearchForDarwinKernel(process);
- if (CheckForKernelImageAtAddress(kernel_load_address, process).IsValid()) {
- process->SetCanRunCode(false);
- return new DynamicLoaderDarwinKernel(process, kernel_load_address);
- }
- return NULL;
-}
-
-lldb::addr_t
-DynamicLoaderDarwinKernel::SearchForDarwinKernel(Process *process) {
- addr_t kernel_load_address = process->GetImageInfoAddress();
- if (kernel_load_address == LLDB_INVALID_ADDRESS) {
- kernel_load_address = SearchForKernelAtSameLoadAddr(process);
- if (kernel_load_address == LLDB_INVALID_ADDRESS) {
- kernel_load_address = SearchForKernelWithDebugHints(process);
- if (kernel_load_address == LLDB_INVALID_ADDRESS) {
- kernel_load_address = SearchForKernelNearPC(process);
- if (kernel_load_address == LLDB_INVALID_ADDRESS) {
- kernel_load_address = SearchForKernelViaExhaustiveSearch(process);
- }
- }
- }
- }
- return kernel_load_address;
-}
-
-//----------------------------------------------------------------------
-// Check if the kernel binary is loaded in memory without a slide. First verify
-// that the ExecutableModule is a kernel before we proceed. Returns the address
-// of the kernel if one was found, else LLDB_INVALID_ADDRESS.
-//----------------------------------------------------------------------
-lldb::addr_t
-DynamicLoaderDarwinKernel::SearchForKernelAtSameLoadAddr(Process *process) {
- Module *exe_module = process->GetTarget().GetExecutableModulePointer();
- if (exe_module == NULL)
- return LLDB_INVALID_ADDRESS;
-
- ObjectFile *exe_objfile = exe_module->GetObjectFile();
- if (exe_objfile == NULL)
- return LLDB_INVALID_ADDRESS;
-
- if (exe_objfile->GetType() != ObjectFile::eTypeExecutable ||
- exe_objfile->GetStrata() != ObjectFile::eStrataKernel)
- return LLDB_INVALID_ADDRESS;
-
- if (!exe_objfile->GetBaseAddress().IsValid())
- return LLDB_INVALID_ADDRESS;
-
- if (CheckForKernelImageAtAddress(
- exe_objfile->GetBaseAddress().GetFileAddress(), process) ==
- exe_module->GetUUID())
- return exe_objfile->GetBaseAddress().GetFileAddress();
-
- return LLDB_INVALID_ADDRESS;
-}
-
-//----------------------------------------------------------------------
-// If the debug flag is included in the boot-args nvram setting, the kernel's
-// load address will be noted in the lowglo page at a fixed address Returns the
-// address of the kernel if one was found, else LLDB_INVALID_ADDRESS.
-//----------------------------------------------------------------------
-lldb::addr_t
-DynamicLoaderDarwinKernel::SearchForKernelWithDebugHints(Process *process) {
- if (GetGlobalProperties()->GetScanType() == eKASLRScanNone)
- return LLDB_INVALID_ADDRESS;
-
- Status read_err;
- addr_t kernel_addresses_64[] = {
- 0xfffffff000004010ULL, // newest arm64 devices
- 0xffffff8000004010ULL, // 2014-2015-ish arm64 devices
- 0xffffff8000002010ULL, // oldest arm64 devices
- LLDB_INVALID_ADDRESS};
- addr_t kernel_addresses_32[] = {0xffff0110, // 2016 and earlier armv7 devices
- 0xffff1010,
- LLDB_INVALID_ADDRESS};
-
- uint8_t uval[8];
- if (process->GetAddressByteSize() == 8) {
- for (size_t i = 0; kernel_addresses_64[i] != LLDB_INVALID_ADDRESS; i++) {
- if (process->ReadMemoryFromInferior (kernel_addresses_64[i], uval, 8, read_err) == 8)
- {
- DataExtractor data (&uval, 8, process->GetByteOrder(), process->GetAddressByteSize());
- offset_t offset = 0;
- uint64_t addr = data.GetU64 (&offset);
- if (CheckForKernelImageAtAddress(addr, process).IsValid()) {
- return addr;
- }
- }
- }
- }
-
- if (process->GetAddressByteSize() == 4) {
- for (size_t i = 0; kernel_addresses_32[i] != LLDB_INVALID_ADDRESS; i++) {
- if (process->ReadMemoryFromInferior (kernel_addresses_32[i], uval, 4, read_err) == 4)
- {
- DataExtractor data (&uval, 4, process->GetByteOrder(), process->GetAddressByteSize());
- offset_t offset = 0;
- uint32_t addr = data.GetU32 (&offset);
- if (CheckForKernelImageAtAddress(addr, process).IsValid()) {
- return addr;
- }
- }
- }
- }
-
- return LLDB_INVALID_ADDRESS;
-}
-
-//----------------------------------------------------------------------
-// If the kernel is currently executing when lldb attaches, and we don't have a
-// better way of finding the kernel's load address, try searching backwards
-// from the current pc value looking for the kernel's Mach header in memory.
-// Returns the address of the kernel if one was found, else
-// LLDB_INVALID_ADDRESS.
-//----------------------------------------------------------------------
-lldb::addr_t
-DynamicLoaderDarwinKernel::SearchForKernelNearPC(Process *process) {
- if (GetGlobalProperties()->GetScanType() == eKASLRScanNone ||
- GetGlobalProperties()->GetScanType() == eKASLRScanLowgloAddresses) {
- return LLDB_INVALID_ADDRESS;
- }
-
- ThreadSP thread = process->GetThreadList().GetSelectedThread();
- if (thread.get() == NULL)
- return LLDB_INVALID_ADDRESS;
- addr_t pc = thread->GetRegisterContext()->GetPC(LLDB_INVALID_ADDRESS);
-
- // The kernel is always loaded in high memory, if the top bit is zero,
- // this isn't a kernel.
- if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 8) {
- if ((pc & (1ULL << 63)) == 0) {
- return LLDB_INVALID_ADDRESS;
- }
- } else {
- if ((pc & (1ULL << 31)) == 0) {
- return LLDB_INVALID_ADDRESS;
- }
- }
-
- if (pc == LLDB_INVALID_ADDRESS)
- return LLDB_INVALID_ADDRESS;
-
- // The kernel will load at at one megabyte boundary (0x100000), or at that
- // boundary plus an offset of one page (0x1000) or two, or four (0x4000),
- // depending on the device.
-
- // Round the current pc down to the nearest one megabyte boundary - the place
- // where we will start searching.
- addr_t addr = pc & ~0xfffff;
-
- // Search backwards 32 megabytes, looking for the start of the kernel at each
- // one-megabyte boundary.
- for (int i = 0; i < 32; i++, addr -= 0x100000) {
- // x86_64 kernels are at offset 0
- if (CheckForKernelImageAtAddress(addr, process).IsValid())
- return addr;
- // 32-bit arm kernels are at offset 0x1000 (one 4k page)
- if (CheckForKernelImageAtAddress(addr + 0x1000, process).IsValid())
- return addr + 0x1000;
- // 64-bit arm kernels are at offset 0x4000 (one 16k page)
- if (CheckForKernelImageAtAddress(addr + 0x4000, process).IsValid())
- return addr + 0x4000;
- }
-
- return LLDB_INVALID_ADDRESS;
-}
-
-//----------------------------------------------------------------------
-// Scan through the valid address range for a kernel binary. This is uselessly
-// slow in 64-bit environments so we don't even try it. This scan is not
-// enabled by default even for 32-bit targets. Returns the address of the
-// kernel if one was found, else LLDB_INVALID_ADDRESS.
-//----------------------------------------------------------------------
-lldb::addr_t DynamicLoaderDarwinKernel::SearchForKernelViaExhaustiveSearch(
- Process *process) {
- if (GetGlobalProperties()->GetScanType() != eKASLRScanExhaustiveScan) {
- return LLDB_INVALID_ADDRESS;
- }
-
- addr_t kernel_range_low, kernel_range_high;
- if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 8) {
- kernel_range_low = 1ULL << 63;
- kernel_range_high = UINT64_MAX;
- } else {
- kernel_range_low = 1ULL << 31;
- kernel_range_high = UINT32_MAX;
- }
-
- // Stepping through memory at one-megabyte resolution looking for a kernel
- // rarely works (fast enough) with a 64-bit address space -- for now, let's
- // not even bother. We may be attaching to something which *isn't* a kernel
- // and we don't want to spin for minutes on-end looking for a kernel.
- if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 8)
- return LLDB_INVALID_ADDRESS;
-
- addr_t addr = kernel_range_low;
-
- while (addr >= kernel_range_low && addr < kernel_range_high) {
- // x86_64 kernels are at offset 0
- if (CheckForKernelImageAtAddress(addr, process).IsValid())
- return addr;
- // 32-bit arm kernels are at offset 0x1000 (one 4k page)
- if (CheckForKernelImageAtAddress(addr + 0x1000, process).IsValid())
- return addr + 0x1000;
- // 64-bit arm kernels are at offset 0x4000 (one 16k page)
- if (CheckForKernelImageAtAddress(addr + 0x4000, process).IsValid())
- return addr + 0x4000;
- addr += 0x100000;
- }
- return LLDB_INVALID_ADDRESS;
-}
-
-//----------------------------------------------------------------------
-// Read the mach_header struct out of memory and return it.
-// Returns true if the mach_header was successfully read,
-// Returns false if there was a problem reading the header, or it was not
-// a Mach-O header.
-//----------------------------------------------------------------------
-
-bool
-DynamicLoaderDarwinKernel::ReadMachHeader(addr_t addr, Process *process, llvm::MachO::mach_header &header) {
- Status read_error;
-
- // Read the mach header and see whether it looks like a kernel
- if (process->DoReadMemory (addr, &header, sizeof(header), read_error) !=
- sizeof(header))
- return false;
-
- const uint32_t magicks[] = { llvm::MachO::MH_MAGIC_64, llvm::MachO::MH_MAGIC, llvm::MachO::MH_CIGAM, llvm::MachO::MH_CIGAM_64};
-
- bool found_matching_pattern = false;
- for (size_t i = 0; i < llvm::array_lengthof (magicks); i++)
- if (::memcmp (&header.magic, &magicks[i], sizeof (uint32_t)) == 0)
- found_matching_pattern = true;
-
- if (!found_matching_pattern)
- return false;
-
- if (header.magic == llvm::MachO::MH_CIGAM ||
- header.magic == llvm::MachO::MH_CIGAM_64) {
- header.magic = llvm::ByteSwap_32(header.magic);
- header.cputype = llvm::ByteSwap_32(header.cputype);
- header.cpusubtype = llvm::ByteSwap_32(header.cpusubtype);
- header.filetype = llvm::ByteSwap_32(header.filetype);
- header.ncmds = llvm::ByteSwap_32(header.ncmds);
- header.sizeofcmds = llvm::ByteSwap_32(header.sizeofcmds);
- header.flags = llvm::ByteSwap_32(header.flags);
- }
-
- return true;
-}
-
-//----------------------------------------------------------------------
-// Given an address in memory, look to see if there is a kernel image at that
-// address.
-// Returns a UUID; if a kernel was not found at that address, UUID.IsValid()
-// will be false.
-//----------------------------------------------------------------------
-lldb_private::UUID
-DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress(lldb::addr_t addr,
- Process *process) {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- if (addr == LLDB_INVALID_ADDRESS)
- return UUID();
-
- if (log)
- log->Printf("DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress: "
- "looking for kernel binary at 0x%" PRIx64,
- addr);
-
- llvm::MachO::mach_header header;
-
- if (!ReadMachHeader(addr, process, header))
- return UUID();
-
- // First try a quick test -- read the first 4 bytes and see if there is a
- // valid Mach-O magic field there
- // (the first field of the mach_header/mach_header_64 struct).
- // A kernel is an executable which does not have the dynamic link object flag
- // set.
- if (header.filetype == llvm::MachO::MH_EXECUTE &&
- (header.flags & llvm::MachO::MH_DYLDLINK) == 0) {
- // Create a full module to get the UUID
- ModuleSP memory_module_sp =
- process->ReadModuleFromMemory(FileSpec("temp_mach_kernel"), addr);
- if (!memory_module_sp.get())
- return UUID();
-
- ObjectFile *exe_objfile = memory_module_sp->GetObjectFile();
- if (exe_objfile == NULL) {
- if (log)
- log->Printf("DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress "
- "found a binary at 0x%" PRIx64
- " but could not create an object file from memory",
- addr);
- return UUID();
- }
-
- if (exe_objfile->GetType() == ObjectFile::eTypeExecutable &&
- exe_objfile->GetStrata() == ObjectFile::eStrataKernel) {
- ArchSpec kernel_arch(eArchTypeMachO, header.cputype, header.cpusubtype);
- if (!process->GetTarget().GetArchitecture().IsCompatibleMatch(
- kernel_arch)) {
- process->GetTarget().SetArchitecture(kernel_arch);
- }
- if (log) {
- std::string uuid_str;
- if (memory_module_sp->GetUUID().IsValid()) {
- uuid_str = "with UUID ";
- uuid_str += memory_module_sp->GetUUID().GetAsString();
- } else {
- uuid_str = "and no LC_UUID found in load commands ";
- }
- log->Printf(
- "DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress: "
- "kernel binary image found at 0x%" PRIx64 " with arch '%s' %s",
- addr, kernel_arch.GetTriple().str().c_str(), uuid_str.c_str());
- }
- return memory_module_sp->GetUUID();
- }
- }
-
- return UUID();
-}
-
-//----------------------------------------------------------------------
-// Constructor
-//----------------------------------------------------------------------
-DynamicLoaderDarwinKernel::DynamicLoaderDarwinKernel(Process *process,
- lldb::addr_t kernel_addr)
- : DynamicLoader(process), m_kernel_load_address(kernel_addr), m_kernel(),
- m_kext_summary_header_ptr_addr(), m_kext_summary_header_addr(),
- m_kext_summary_header(), m_known_kexts(), m_mutex(),
- m_break_id(LLDB_INVALID_BREAK_ID) {
- Status error;
- PlatformSP platform_sp(
- Platform::Create(PlatformDarwinKernel::GetPluginNameStatic(), error));
- // Only select the darwin-kernel Platform if we've been asked to load kexts.
- // It can take some time to scan over all of the kext info.plists and that
- // shouldn't be done if kext loading is explicitly disabled.
- if (platform_sp.get() && GetGlobalProperties()->GetLoadKexts()) {
- process->GetTarget().SetPlatform(platform_sp);
- }
-}
-
-//----------------------------------------------------------------------
-// Destructor
-//----------------------------------------------------------------------
-DynamicLoaderDarwinKernel::~DynamicLoaderDarwinKernel() { Clear(true); }
-
-void DynamicLoaderDarwinKernel::UpdateIfNeeded() {
- LoadKernelModuleIfNeeded();
- SetNotificationBreakpointIfNeeded();
-}
-//------------------------------------------------------------------
-/// Called after attaching a process.
-///
-/// Allow DynamicLoader plug-ins to execute some code after
-/// attaching to a process.
-//------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::DidAttach() {
- PrivateInitialize(m_process);
- UpdateIfNeeded();
-}
-
-//------------------------------------------------------------------
-/// Called after attaching a process.
-///
-/// Allow DynamicLoader plug-ins to execute some code after
-/// attaching to a process.
-//------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::DidLaunch() {
- PrivateInitialize(m_process);
- UpdateIfNeeded();
-}
-
-//----------------------------------------------------------------------
-// Clear out the state of this class.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::Clear(bool clear_process) {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- if (m_process->IsAlive() && LLDB_BREAK_ID_IS_VALID(m_break_id))
- m_process->ClearBreakpointSiteByID(m_break_id);
-
- if (clear_process)
- m_process = NULL;
- m_kernel.Clear();
- m_known_kexts.clear();
- m_kext_summary_header_ptr_addr.Clear();
- m_kext_summary_header_addr.Clear();
- m_break_id = LLDB_INVALID_BREAK_ID;
-}
-
-bool DynamicLoaderDarwinKernel::KextImageInfo::LoadImageAtFileAddress(
- Process *process) {
- if (IsLoaded())
- return true;
-
- if (m_module_sp) {
- bool changed = false;
- if (m_module_sp->SetLoadAddress(process->GetTarget(), 0, true, changed))
- m_load_process_stop_id = process->GetStopID();
- }
- return false;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetModule(ModuleSP module_sp) {
- m_module_sp = module_sp;
- if (module_sp.get() && module_sp->GetObjectFile()) {
- if (module_sp->GetObjectFile()->GetType() == ObjectFile::eTypeExecutable &&
- module_sp->GetObjectFile()->GetStrata() == ObjectFile::eStrataKernel) {
- m_kernel_image = true;
- } else {
- m_kernel_image = false;
- }
- }
-}
-
-ModuleSP DynamicLoaderDarwinKernel::KextImageInfo::GetModule() {
- return m_module_sp;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetLoadAddress(
- addr_t load_addr) {
- m_load_address = load_addr;
-}
-
-addr_t DynamicLoaderDarwinKernel::KextImageInfo::GetLoadAddress() const {
- return m_load_address;
-}
-
-uint64_t DynamicLoaderDarwinKernel::KextImageInfo::GetSize() const {
- return m_size;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetSize(uint64_t size) {
- m_size = size;
-}
-
-uint32_t DynamicLoaderDarwinKernel::KextImageInfo::GetProcessStopId() const {
- return m_load_process_stop_id;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetProcessStopId(
- uint32_t stop_id) {
- m_load_process_stop_id = stop_id;
-}
-
-bool DynamicLoaderDarwinKernel::KextImageInfo::
-operator==(const KextImageInfo &rhs) {
- if (m_uuid.IsValid() || rhs.GetUUID().IsValid()) {
- return m_uuid == rhs.GetUUID();
- }
-
- return m_name == rhs.GetName() && m_load_address == rhs.GetLoadAddress();
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetName(const char *name) {
- m_name = name;
-}
-
-std::string DynamicLoaderDarwinKernel::KextImageInfo::GetName() const {
- return m_name;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetUUID(const UUID &uuid) {
- m_uuid = uuid;
-}
-
-UUID DynamicLoaderDarwinKernel::KextImageInfo::GetUUID() const {
- return m_uuid;
-}
-
-// Given the m_load_address from the kext summaries, and a UUID, try to create
-// an in-memory Module at that address. Require that the MemoryModule have a
-// matching UUID and detect if this MemoryModule is a kernel or a kext.
-//
-// Returns true if m_memory_module_sp is now set to a valid Module.
-
-bool DynamicLoaderDarwinKernel::KextImageInfo::ReadMemoryModule(
- Process *process) {
- Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
- if (m_memory_module_sp.get() != NULL)
- return true;
- if (m_load_address == LLDB_INVALID_ADDRESS)
- return false;
-
- FileSpec file_spec(m_name.c_str());
-
- llvm::MachO::mach_header mh;
- size_t size_to_read = 512;
- if (ReadMachHeader(m_load_address, process, mh)) {
- if (mh.magic == llvm::MachO::MH_CIGAM || mh.magic == llvm::MachO::MH_MAGIC)
- size_to_read = sizeof(llvm::MachO::mach_header) + mh.sizeofcmds;
- if (mh.magic == llvm::MachO::MH_CIGAM_64 ||
- mh.magic == llvm::MachO::MH_MAGIC_64)
- size_to_read = sizeof(llvm::MachO::mach_header_64) + mh.sizeofcmds;
- }
-
- ModuleSP memory_module_sp =
- process->ReadModuleFromMemory(file_spec, m_load_address, size_to_read);
-
- if (memory_module_sp.get() == NULL)
- return false;
-
- bool is_kernel = false;
- if (memory_module_sp->GetObjectFile()) {
- if (memory_module_sp->GetObjectFile()->GetType() ==
- ObjectFile::eTypeExecutable &&
- memory_module_sp->GetObjectFile()->GetStrata() ==
- ObjectFile::eStrataKernel) {
- is_kernel = true;
- } else if (memory_module_sp->GetObjectFile()->GetType() ==
- ObjectFile::eTypeSharedLibrary) {
- is_kernel = false;
- }
- }
-
- // If this is a kext, and the kernel specified what UUID we should find at
- // this load address, require that the memory module have a matching UUID or
- // something has gone wrong and we should discard it.
- if (m_uuid.IsValid()) {
- if (m_uuid != memory_module_sp->GetUUID()) {
- if (log) {
- log->Printf("KextImageInfo::ReadMemoryModule the kernel said to find "
- "uuid %s at 0x%" PRIx64
- " but instead we found uuid %s, throwing it away",
- m_uuid.GetAsString().c_str(), m_load_address,
- memory_module_sp->GetUUID().GetAsString().c_str());
- }
- return false;
- }
- }
-
- // If the in-memory Module has a UUID, let's use that.
- if (!m_uuid.IsValid() && memory_module_sp->GetUUID().IsValid()) {
- m_uuid = memory_module_sp->GetUUID();
- }
-
- m_memory_module_sp = memory_module_sp;
- m_kernel_image = is_kernel;
- if (is_kernel) {
- if (log) {
- // This is unusual and probably not intended
- log->Printf("KextImageInfo::ReadMemoryModule read the kernel binary out "
- "of memory");
- }
- if (memory_module_sp->GetArchitecture().IsValid()) {
- process->GetTarget().SetArchitecture(memory_module_sp->GetArchitecture());
- }
- if (m_uuid.IsValid()) {
- ModuleSP exe_module_sp = process->GetTarget().GetExecutableModule();
- if (exe_module_sp.get() && exe_module_sp->GetUUID().IsValid()) {
- if (m_uuid != exe_module_sp->GetUUID()) {
- // The user specified a kernel binary that has a different UUID than
- // the kernel actually running in memory. This never ends well;
- // clear the user specified kernel binary from the Target.
-
- m_module_sp.reset();
-
- ModuleList user_specified_kernel_list;
- user_specified_kernel_list.Append(exe_module_sp);
- process->GetTarget().GetImages().Remove(user_specified_kernel_list);
- }
- }
- }
- }
-
- return true;
-}
-
-bool DynamicLoaderDarwinKernel::KextImageInfo::IsKernel() const {
- return m_kernel_image;
-}
-
-void DynamicLoaderDarwinKernel::KextImageInfo::SetIsKernel(bool is_kernel) {
- m_kernel_image = is_kernel;
-}
-
-bool DynamicLoaderDarwinKernel::KextImageInfo::LoadImageUsingMemoryModule(
- Process *process) {
- if (IsLoaded())
- return true;
-
- Target &target = process->GetTarget();
-
- // If we don't have / can't create a memory module for this kext, don't try
- // to load it - we won't have the correct segment load addresses.
- if (!ReadMemoryModule(process)) {
- Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- if (log)
- log->Printf("Unable to read '%s' from memory at address 0x%" PRIx64
- " to get the segment load addresses.",
- m_name.c_str(), m_load_address);
- return false;
- }
-
- bool uuid_is_valid = m_uuid.IsValid();
-
- if (IsKernel() && uuid_is_valid && m_memory_module_sp.get()) {
- Stream *s = target.GetDebugger().GetOutputFile().get();
- if (s) {
- s->Printf("Kernel UUID: %s\n",
- m_memory_module_sp->GetUUID().GetAsString().c_str());
- s->Printf("Load Address: 0x%" PRIx64 "\n", m_load_address);
- }
- }
-
- if (!m_module_sp) {
- // See if the kext has already been loaded into the target, probably by the
- // user doing target modules add.
- const ModuleList &target_images = target.GetImages();
- m_module_sp = target_images.FindModule(m_uuid);
-
- // Search for the kext on the local filesystem via the UUID
- if (!m_module_sp && uuid_is_valid) {
- ModuleSpec module_spec;
- module_spec.GetUUID() = m_uuid;
- module_spec.GetArchitecture() = target.GetArchitecture();
-
- // For the kernel, we really do need an on-disk file copy of the binary
- // to do anything useful. This will force a clal to
- if (IsKernel()) {
- if (Symbols::DownloadObjectAndSymbolFile(module_spec, true)) {
- if (FileSystem::Instance().Exists(module_spec.GetFileSpec())) {
- m_module_sp.reset(new Module(module_spec.GetFileSpec(),
- target.GetArchitecture()));
- if (m_module_sp.get() &&
- m_module_sp->MatchesModuleSpec(module_spec)) {
- ModuleList loaded_module_list;
- loaded_module_list.Append(m_module_sp);
- target.ModulesDidLoad(loaded_module_list);
- }
- }
- }
- }
-
- // If the current platform is PlatformDarwinKernel, create a ModuleSpec
- // with the filename set to be the bundle ID for this kext, e.g.
- // "com.apple.filesystems.msdosfs", and ask the platform to find it.
- PlatformSP platform_sp(target.GetPlatform());
- if (!m_module_sp && platform_sp) {
- ConstString platform_name(platform_sp->GetPluginName());
- static ConstString g_platform_name(
- PlatformDarwinKernel::GetPluginNameStatic());
- if (platform_name == g_platform_name) {
- ModuleSpec kext_bundle_module_spec(module_spec);
- FileSpec kext_filespec(m_name.c_str());
- kext_bundle_module_spec.GetFileSpec() = kext_filespec;
- platform_sp->GetSharedModule(
- kext_bundle_module_spec, process, m_module_sp,
- &target.GetExecutableSearchPaths(), NULL, NULL);
- }
- }
-
- // Ask the Target to find this file on the local system, if possible.
- // This will search in the list of currently-loaded files, look in the
- // standard search paths on the system, and on a Mac it will try calling
- // the DebugSymbols framework with the UUID to find the binary via its
- // search methods.
- if (!m_module_sp) {
- m_module_sp = target.GetSharedModule(module_spec);
- }
-
- if (IsKernel() && !m_module_sp) {
- Stream *s = target.GetDebugger().GetOutputFile().get();
- if (s) {
- s->Printf("WARNING: Unable to locate kernel binary on the debugger "
- "system.\n");
- }
- }
- }
-
- // If we managed to find a module, append it to the target's list of
- // images. If we also have a memory module, require that they have matching
- // UUIDs
- if (m_module_sp) {
- bool uuid_match_ok = true;
- if (m_memory_module_sp) {
- if (m_module_sp->GetUUID() != m_memory_module_sp->GetUUID()) {
- uuid_match_ok = false;
- }
- }
- if (uuid_match_ok) {
- target.GetImages().AppendIfNeeded(m_module_sp);
- if (IsKernel() &&
- target.GetExecutableModulePointer() != m_module_sp.get()) {
- target.SetExecutableModule(m_module_sp, eLoadDependentsNo);
- }
- }
- }
- }
-
- if (!m_module_sp && !IsKernel() && m_uuid.IsValid() && !m_name.empty()) {
- Stream *s = target.GetDebugger().GetOutputFile().get();
- if (s) {
- s->Printf("warning: Can't find binary/dSYM for %s (%s)\n", m_name.c_str(),
- m_uuid.GetAsString().c_str());
- }
- }
-
- static ConstString g_section_name_LINKEDIT("__LINKEDIT");
-
- if (m_memory_module_sp && m_module_sp) {
- if (m_module_sp->GetUUID() == m_memory_module_sp->GetUUID()) {
- ObjectFile *ondisk_object_file = m_module_sp->GetObjectFile();
- ObjectFile *memory_object_file = m_memory_module_sp->GetObjectFile();
-
- if (memory_object_file && ondisk_object_file) {
- // The memory_module for kexts may have an invalid __LINKEDIT seg; skip
- // it.
- const bool ignore_linkedit = !IsKernel();
-
- SectionList *ondisk_section_list = ondisk_object_file->GetSectionList();
- SectionList *memory_section_list = memory_object_file->GetSectionList();
- if (memory_section_list && ondisk_section_list) {
- const uint32_t num_ondisk_sections = ondisk_section_list->GetSize();
- // There may be CTF sections in the memory image so we can't always
- // just compare the number of sections (which are actually segments
- // in mach-o parlance)
- uint32_t sect_idx = 0;
-
- // Use the memory_module's addresses for each section to set the file
- // module's load address as appropriate. We don't want to use a
- // single slide value for the entire kext - different segments may be
- // slid different amounts by the kext loader.
-
- uint32_t num_sections_loaded = 0;
- for (sect_idx = 0; sect_idx < num_ondisk_sections; ++sect_idx) {
- SectionSP ondisk_section_sp(
- ondisk_section_list->GetSectionAtIndex(sect_idx));
- if (ondisk_section_sp) {
- // Don't ever load __LINKEDIT as it may or may not be actually
- // mapped into memory and there is no current way to tell.
- // I filed rdar://problem/12851706 to track being able to tell
- // if the __LINKEDIT is actually mapped, but until then, we need
- // to not load the __LINKEDIT
- if (ignore_linkedit &&
- ondisk_section_sp->GetName() == g_section_name_LINKEDIT)
- continue;
-
- const Section *memory_section =
- memory_section_list
- ->FindSectionByName(ondisk_section_sp->GetName())
- .get();
- if (memory_section) {
- target.SetSectionLoadAddress(ondisk_section_sp,
- memory_section->GetFileAddress());
- ++num_sections_loaded;
- }
- }
- }
- if (num_sections_loaded > 0)
- m_load_process_stop_id = process->GetStopID();
- else
- m_module_sp.reset(); // No sections were loaded
- } else
- m_module_sp.reset(); // One or both section lists
- } else
- m_module_sp.reset(); // One or both object files missing
- } else
- m_module_sp.reset(); // UUID mismatch
- }
-
- bool is_loaded = IsLoaded();
-
- if (is_loaded && m_module_sp && IsKernel()) {
- Stream *s = target.GetDebugger().GetOutputFile().get();
- if (s) {
- ObjectFile *kernel_object_file = m_module_sp->GetObjectFile();
- if (kernel_object_file) {
- addr_t file_address =
- kernel_object_file->GetBaseAddress().GetFileAddress();
- if (m_load_address != LLDB_INVALID_ADDRESS &&
- file_address != LLDB_INVALID_ADDRESS) {
- s->Printf("Kernel slid 0x%" PRIx64 " in memory.\n",
- m_load_address - file_address);
- }
- }
- {
- s->Printf("Loaded kernel file %s\n",
- m_module_sp->GetFileSpec().GetPath().c_str());
- }
- s->Flush();
- }
- }
- return is_loaded;
-}
-
-uint32_t DynamicLoaderDarwinKernel::KextImageInfo::GetAddressByteSize() {
- if (m_memory_module_sp)
- return m_memory_module_sp->GetArchitecture().GetAddressByteSize();
- if (m_module_sp)
- return m_module_sp->GetArchitecture().GetAddressByteSize();
- return 0;
-}
-
-lldb::ByteOrder DynamicLoaderDarwinKernel::KextImageInfo::GetByteOrder() {
- if (m_memory_module_sp)
- return m_memory_module_sp->GetArchitecture().GetByteOrder();
- if (m_module_sp)
- return m_module_sp->GetArchitecture().GetByteOrder();
- return endian::InlHostByteOrder();
-}
-
-lldb_private::ArchSpec
-DynamicLoaderDarwinKernel::KextImageInfo::GetArchitecture() const {
- if (m_memory_module_sp)
- return m_memory_module_sp->GetArchitecture();
- if (m_module_sp)
- return m_module_sp->GetArchitecture();
- return lldb_private::ArchSpec();
-}
-
-//----------------------------------------------------------------------
-// Load the kernel module and initialize the "m_kernel" member. Return true
-// _only_ if the kernel is loaded the first time through (subsequent calls to
-// this function should return false after the kernel has been already loaded).
-//----------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::LoadKernelModuleIfNeeded() {
- if (!m_kext_summary_header_ptr_addr.IsValid()) {
- m_kernel.Clear();
- m_kernel.SetModule(m_process->GetTarget().GetExecutableModule());
- m_kernel.SetIsKernel(true);
-
- ConstString kernel_name("mach_kernel");
- if (m_kernel.GetModule().get() && m_kernel.GetModule()->GetObjectFile() &&
- !m_kernel.GetModule()
- ->GetObjectFile()
- ->GetFileSpec()
- .GetFilename()
- .IsEmpty()) {
- kernel_name =
- m_kernel.GetModule()->GetObjectFile()->GetFileSpec().GetFilename();
- }
- m_kernel.SetName(kernel_name.AsCString());
-
- if (m_kernel.GetLoadAddress() == LLDB_INVALID_ADDRESS) {
- m_kernel.SetLoadAddress(m_kernel_load_address);
- if (m_kernel.GetLoadAddress() == LLDB_INVALID_ADDRESS &&
- m_kernel.GetModule()) {
- // We didn't get a hint from the process, so we will try the kernel at
- // the address that it exists at in the file if we have one
- ObjectFile *kernel_object_file = m_kernel.GetModule()->GetObjectFile();
- if (kernel_object_file) {
- addr_t load_address =
- kernel_object_file->GetBaseAddress().GetLoadAddress(
- &m_process->GetTarget());
- addr_t file_address =
- kernel_object_file->GetBaseAddress().GetFileAddress();
- if (load_address != LLDB_INVALID_ADDRESS && load_address != 0) {
- m_kernel.SetLoadAddress(load_address);
- if (load_address != file_address) {
- // Don't accidentally relocate the kernel to the File address --
- // the Load address has already been set to its actual in-memory
- // address. Mark it as IsLoaded.
- m_kernel.SetProcessStopId(m_process->GetStopID());
- }
- } else {
- m_kernel.SetLoadAddress(file_address);
- }
- }
- }
- }
-
- if (m_kernel.GetLoadAddress() != LLDB_INVALID_ADDRESS) {
- if (!m_kernel.LoadImageUsingMemoryModule(m_process)) {
- m_kernel.LoadImageAtFileAddress(m_process);
- }
- }
-
- // The operating system plugin gets loaded and initialized in
- // LoadImageUsingMemoryModule when we discover the kernel dSYM. For a core
- // file in particular, that's the wrong place to do this, since we haven't
- // fixed up the section addresses yet. So let's redo it here.
- LoadOperatingSystemPlugin(false);
-
- if (m_kernel.IsLoaded() && m_kernel.GetModule()) {
- static ConstString kext_summary_symbol("gLoadedKextSummaries");
- const Symbol *symbol =
- m_kernel.GetModule()->FindFirstSymbolWithNameAndType(
- kext_summary_symbol, eSymbolTypeData);
- if (symbol) {
- m_kext_summary_header_ptr_addr = symbol->GetAddress();
- // Update all image infos
- ReadAllKextSummaries();
- }
- } else {
- m_kernel.Clear();
- }
- }
-}
-
-//----------------------------------------------------------------------
-// Static callback function that gets called when our DYLD notification
-// breakpoint gets hit. We update all of our image infos and then let our super
-// class DynamicLoader class decide if we should stop or not (based on global
-// preference).
-//----------------------------------------------------------------------
-bool DynamicLoaderDarwinKernel::BreakpointHitCallback(
- void *baton, StoppointCallbackContext *context, user_id_t break_id,
- user_id_t break_loc_id) {
- return static_cast<DynamicLoaderDarwinKernel *>(baton)->BreakpointHit(
- context, break_id, break_loc_id);
-}
-
-bool DynamicLoaderDarwinKernel::BreakpointHit(StoppointCallbackContext *context,
- user_id_t break_id,
- user_id_t break_loc_id) {
- Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- if (log)
- log->Printf("DynamicLoaderDarwinKernel::BreakpointHit (...)\n");
-
- ReadAllKextSummaries();
-
- if (log)
- PutToLog(log);
-
- return GetStopWhenImagesChange();
-}
-
-bool DynamicLoaderDarwinKernel::ReadKextSummaryHeader() {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- // the all image infos is already valid for this process stop ID
-
- if (m_kext_summary_header_ptr_addr.IsValid()) {
- const uint32_t addr_size = m_kernel.GetAddressByteSize();
- const ByteOrder byte_order = m_kernel.GetByteOrder();
- Status error;
- // Read enough bytes for a "OSKextLoadedKextSummaryHeader" structure which
- // is currently 4 uint32_t and a pointer.
- uint8_t buf[24];
- DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
- const size_t count = 4 * sizeof(uint32_t) + addr_size;
- const bool prefer_file_cache = false;
- if (m_process->GetTarget().ReadPointerFromMemory(
- m_kext_summary_header_ptr_addr, prefer_file_cache, error,
- m_kext_summary_header_addr)) {
- // We got a valid address for our kext summary header and make sure it
- // isn't NULL
- if (m_kext_summary_header_addr.IsValid() &&
- m_kext_summary_header_addr.GetFileAddress() != 0) {
- const size_t bytes_read = m_process->GetTarget().ReadMemory(
- m_kext_summary_header_addr, prefer_file_cache, buf, count, error);
- if (bytes_read == count) {
- lldb::offset_t offset = 0;
- m_kext_summary_header.version = data.GetU32(&offset);
- if (m_kext_summary_header.version > 128) {
- Stream *s =
- m_process->GetTarget().GetDebugger().GetOutputFile().get();
- s->Printf("WARNING: Unable to read kext summary header, got "
- "improbable version number %u\n",
- m_kext_summary_header.version);
- // If we get an improbably large version number, we're probably
- // getting bad memory.
- m_kext_summary_header_addr.Clear();
- return false;
- }
- if (m_kext_summary_header.version >= 2) {
- m_kext_summary_header.entry_size = data.GetU32(&offset);
- if (m_kext_summary_header.entry_size > 4096) {
- // If we get an improbably large entry_size, we're probably
- // getting bad memory.
- Stream *s =
- m_process->GetTarget().GetDebugger().GetOutputFile().get();
- s->Printf("WARNING: Unable to read kext summary header, got "
- "improbable entry_size %u\n",
- m_kext_summary_header.entry_size);
- m_kext_summary_header_addr.Clear();
- return false;
- }
- } else {
- // Versions less than 2 didn't have an entry size, it was hard
- // coded
- m_kext_summary_header.entry_size =
- KERNEL_MODULE_ENTRY_SIZE_VERSION_1;
- }
- m_kext_summary_header.entry_count = data.GetU32(&offset);
- if (m_kext_summary_header.entry_count > 10000) {
- // If we get an improbably large number of kexts, we're probably
- // getting bad memory.
- Stream *s =
- m_process->GetTarget().GetDebugger().GetOutputFile().get();
- s->Printf("WARNING: Unable to read kext summary header, got "
- "improbable number of kexts %u\n",
- m_kext_summary_header.entry_count);
- m_kext_summary_header_addr.Clear();
- return false;
- }
- return true;
- }
- }
- }
- }
- m_kext_summary_header_addr.Clear();
- return false;
-}
-
-// We've either (a) just attached to a new kernel, or (b) the kexts-changed
-// breakpoint was hit and we need to figure out what kexts have been added or
-// removed. Read the kext summaries from the inferior kernel memory, compare
-// them against the m_known_kexts vector and update the m_known_kexts vector as
-// needed to keep in sync with the inferior.
-
-bool DynamicLoaderDarwinKernel::ParseKextSummaries(
- const Address &kext_summary_addr, uint32_t count) {
- KextImageInfo::collection kext_summaries;
- Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- if (log)
- log->Printf("Kexts-changed breakpoint hit, there are %d kexts currently.\n",
- count);
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- if (!ReadKextSummaries(kext_summary_addr, count, kext_summaries))
- return false;
-
- // read the plugin.dynamic-loader.darwin-kernel.load-kexts setting -- if the
- // user requested no kext loading, don't print any messages about kexts &
- // don't try to read them.
- const bool load_kexts = GetGlobalProperties()->GetLoadKexts();
-
- // By default, all kexts we've loaded in the past are marked as "remove" and
- // all of the kexts we just found out about from ReadKextSummaries are marked
- // as "add".
- std::vector<bool> to_be_removed(m_known_kexts.size(), true);
- std::vector<bool> to_be_added(count, true);
-
- int number_of_new_kexts_being_added = 0;
- int number_of_old_kexts_being_removed = m_known_kexts.size();
-
- const uint32_t new_kexts_size = kext_summaries.size();
- const uint32_t old_kexts_size = m_known_kexts.size();
-
- // The m_known_kexts vector may have entries that have been Cleared, or are a
- // kernel.
- for (uint32_t old_kext = 0; old_kext < old_kexts_size; old_kext++) {
- bool ignore = false;
- KextImageInfo &image_info = m_known_kexts[old_kext];
- if (image_info.IsKernel()) {
- ignore = true;
- } else if (image_info.GetLoadAddress() == LLDB_INVALID_ADDRESS &&
- !image_info.GetModule()) {
- ignore = true;
- }
-
- if (ignore) {
- number_of_old_kexts_being_removed--;
- to_be_removed[old_kext] = false;
- }
- }
-
- // Scan over the list of kexts we just read from the kernel, note those that
- // need to be added and those already loaded.
- for (uint32_t new_kext = 0; new_kext < new_kexts_size; new_kext++) {
- bool add_this_one = true;
- for (uint32_t old_kext = 0; old_kext < old_kexts_size; old_kext++) {
- if (m_known_kexts[old_kext] == kext_summaries[new_kext]) {
- // We already have this kext, don't re-load it.
- to_be_added[new_kext] = false;
- // This kext is still present, do not remove it.
- to_be_removed[old_kext] = false;
-
- number_of_old_kexts_being_removed--;
- add_this_one = false;
- break;
- }
- }
- // If this "kext" entry is actually an alias for the kernel -- the kext was
- // compiled into the kernel or something -- then we don't want to load the
- // kernel's text section at a different address. Ignore this kext entry.
- if (kext_summaries[new_kext].GetUUID().IsValid()
- && m_kernel.GetUUID().IsValid()
- && kext_summaries[new_kext].GetUUID() == m_kernel.GetUUID()) {
- to_be_added[new_kext] = false;
- break;
- }
- if (add_this_one) {
- number_of_new_kexts_being_added++;
- }
- }
-
- if (number_of_new_kexts_being_added == 0 &&
- number_of_old_kexts_being_removed == 0)
- return true;
-
- Stream *s = m_process->GetTarget().GetDebugger().GetOutputFile().get();
- if (s && load_kexts) {
- if (number_of_new_kexts_being_added > 0 &&
- number_of_old_kexts_being_removed > 0) {
- s->Printf("Loading %d kext modules and unloading %d kext modules ",
- number_of_new_kexts_being_added,
- number_of_old_kexts_being_removed);
- } else if (number_of_new_kexts_being_added > 0) {
- s->Printf("Loading %d kext modules ", number_of_new_kexts_being_added);
- } else if (number_of_old_kexts_being_removed > 0) {
- s->Printf("Unloading %d kext modules ",
- number_of_old_kexts_being_removed);
- }
- }
-
- if (log) {
- if (load_kexts) {
- log->Printf("DynamicLoaderDarwinKernel::ParseKextSummaries: %d kexts "
- "added, %d kexts removed",
- number_of_new_kexts_being_added,
- number_of_old_kexts_being_removed);
- } else {
- log->Printf(
- "DynamicLoaderDarwinKernel::ParseKextSummaries kext loading is "
- "disabled, else would have %d kexts added, %d kexts removed",
- number_of_new_kexts_being_added, number_of_old_kexts_being_removed);
- }
- }
-
- if (number_of_new_kexts_being_added > 0) {
- ModuleList loaded_module_list;
-
- const uint32_t num_of_new_kexts = kext_summaries.size();
- for (uint32_t new_kext = 0; new_kext < num_of_new_kexts; new_kext++) {
- if (to_be_added[new_kext]) {
- KextImageInfo &image_info = kext_summaries[new_kext];
- if (load_kexts) {
- if (!image_info.LoadImageUsingMemoryModule(m_process)) {
- image_info.LoadImageAtFileAddress(m_process);
- }
- }
-
- m_known_kexts.push_back(image_info);
-
- if (image_info.GetModule() &&
- m_process->GetStopID() == image_info.GetProcessStopId())
- loaded_module_list.AppendIfNeeded(image_info.GetModule());
-
- if (s && load_kexts)
- s->Printf(".");
-
- if (log)
- kext_summaries[new_kext].PutToLog(log);
- }
- }
- m_process->GetTarget().ModulesDidLoad(loaded_module_list);
- }
-
- if (number_of_old_kexts_being_removed > 0) {
- ModuleList loaded_module_list;
- const uint32_t num_of_old_kexts = m_known_kexts.size();
- for (uint32_t old_kext = 0; old_kext < num_of_old_kexts; old_kext++) {
- ModuleList unloaded_module_list;
- if (to_be_removed[old_kext]) {
- KextImageInfo &image_info = m_known_kexts[old_kext];
- // You can't unload the kernel.
- if (!image_info.IsKernel()) {
- if (image_info.GetModule()) {
- unloaded_module_list.AppendIfNeeded(image_info.GetModule());
- }
- if (s)
- s->Printf(".");
- image_info.Clear();
- // should pull it out of the KextImageInfos vector but that would
- // mutate the list and invalidate the to_be_removed bool vector;
- // leaving it in place once Cleared() is relatively harmless.
- }
- }
- m_process->GetTarget().ModulesDidUnload(unloaded_module_list, false);
- }
- }
-
- if (s && load_kexts) {
- s->Printf(" done.\n");
- s->Flush();
- }
-
- return true;
-}
-
-uint32_t DynamicLoaderDarwinKernel::ReadKextSummaries(
- const Address &kext_summary_addr, uint32_t image_infos_count,
- KextImageInfo::collection &image_infos) {
- const ByteOrder endian = m_kernel.GetByteOrder();
- const uint32_t addr_size = m_kernel.GetAddressByteSize();
-
- image_infos.resize(image_infos_count);
- const size_t count = image_infos.size() * m_kext_summary_header.entry_size;
- DataBufferHeap data(count, 0);
- Status error;
-
- const bool prefer_file_cache = false;
- const size_t bytes_read = m_process->GetTarget().ReadMemory(
- kext_summary_addr, prefer_file_cache, data.GetBytes(), data.GetByteSize(),
- error);
- if (bytes_read == count) {
-
- DataExtractor extractor(data.GetBytes(), data.GetByteSize(), endian,
- addr_size);
- uint32_t i = 0;
- for (uint32_t kext_summary_offset = 0;
- i < image_infos.size() &&
- extractor.ValidOffsetForDataOfSize(kext_summary_offset,
- m_kext_summary_header.entry_size);
- ++i, kext_summary_offset += m_kext_summary_header.entry_size) {
- lldb::offset_t offset = kext_summary_offset;
- const void *name_data =
- extractor.GetData(&offset, KERNEL_MODULE_MAX_NAME);
- if (name_data == NULL)
- break;
- image_infos[i].SetName((const char *)name_data);
- UUID uuid = UUID::fromOptionalData(extractor.GetData(&offset, 16), 16);
- image_infos[i].SetUUID(uuid);
- image_infos[i].SetLoadAddress(extractor.GetU64(&offset));
- image_infos[i].SetSize(extractor.GetU64(&offset));
- }
- if (i < image_infos.size())
- image_infos.resize(i);
- } else {
- image_infos.clear();
- }
- return image_infos.size();
-}
-
-bool DynamicLoaderDarwinKernel::ReadAllKextSummaries() {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- if (ReadKextSummaryHeader()) {
- if (m_kext_summary_header.entry_count > 0 &&
- m_kext_summary_header_addr.IsValid()) {
- Address summary_addr(m_kext_summary_header_addr);
- summary_addr.Slide(m_kext_summary_header.GetSize());
- if (!ParseKextSummaries(summary_addr,
- m_kext_summary_header.entry_count)) {
- m_known_kexts.clear();
- }
- return true;
- }
- }
- return false;
-}
-
-//----------------------------------------------------------------------
-// Dump an image info structure to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::KextImageInfo::PutToLog(Log *log) const {
- if (m_load_address == LLDB_INVALID_ADDRESS) {
- LLDB_LOG(log, "uuid={0} name=\"{1}\" (UNLOADED)", m_uuid.GetAsString(),
- m_name);
- } else {
- LLDB_LOG(log, "addr={0:x+16} size={1:x+16} uuid={2} name=\"{3}\"",
- m_load_address, m_size, m_uuid.GetAsString(), m_name);
- }
-}
-
-//----------------------------------------------------------------------
-// Dump the _dyld_all_image_infos members and all current image infos that we
-// have parsed to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::PutToLog(Log *log) const {
- if (log == NULL)
- return;
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- log->Printf("gLoadedKextSummaries = 0x%16.16" PRIx64
- " { version=%u, entry_size=%u, entry_count=%u }",
- m_kext_summary_header_addr.GetFileAddress(),
- m_kext_summary_header.version, m_kext_summary_header.entry_size,
- m_kext_summary_header.entry_count);
-
- size_t i;
- const size_t count = m_known_kexts.size();
- if (count > 0) {
- log->PutCString("Loaded:");
- for (i = 0; i < count; i++)
- m_known_kexts[i].PutToLog(log);
- }
-}
-
-void DynamicLoaderDarwinKernel::PrivateInitialize(Process *process) {
- DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n",
- __FUNCTION__, StateAsCString(m_process->GetState()));
- Clear(true);
- m_process = process;
-}
-
-void DynamicLoaderDarwinKernel::SetNotificationBreakpointIfNeeded() {
- if (m_break_id == LLDB_INVALID_BREAK_ID && m_kernel.GetModule()) {
- DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n",
- __FUNCTION__, StateAsCString(m_process->GetState()));
-
- const bool internal_bp = true;
- const bool hardware = false;
- const LazyBool skip_prologue = eLazyBoolNo;
- FileSpecList module_spec_list;
- module_spec_list.Append(m_kernel.GetModule()->GetFileSpec());
- Breakpoint *bp =
- m_process->GetTarget()
- .CreateBreakpoint(&module_spec_list, NULL,
- "OSKextLoadedKextSummariesUpdated",
- eFunctionNameTypeFull, eLanguageTypeUnknown, 0,
- skip_prologue, internal_bp, hardware)
- .get();
-
- bp->SetCallback(DynamicLoaderDarwinKernel::BreakpointHitCallback, this,
- true);
- m_break_id = bp->GetID();
- }
-}
-
-//----------------------------------------------------------------------
-// Member function that gets called when the process state changes.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwinKernel::PrivateProcessStateChanged(Process *process,
- StateType state) {
- DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s(%s)\n", __FUNCTION__,
- StateAsCString(state));
- switch (state) {
- case eStateConnected:
- case eStateAttaching:
- case eStateLaunching:
- case eStateInvalid:
- case eStateUnloaded:
- case eStateExited:
- case eStateDetached:
- Clear(false);
- break;
-
- case eStateStopped:
- UpdateIfNeeded();
- break;
-
- case eStateRunning:
- case eStateStepping:
- case eStateCrashed:
- case eStateSuspended:
- break;
- }
-}
-
-ThreadPlanSP
-DynamicLoaderDarwinKernel::GetStepThroughTrampolinePlan(Thread &thread,
- bool stop_others) {
- ThreadPlanSP thread_plan_sp;
- Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP));
- if (log)
- log->Printf("Could not find symbol for step through.");
- return thread_plan_sp;
-}
-
-Status DynamicLoaderDarwinKernel::CanLoadImage() {
- Status error;
- error.SetErrorString(
- "always unsafe to load or unload shared libraries in the darwin kernel");
- return error;
-}
-
-void DynamicLoaderDarwinKernel::Initialize() {
- PluginManager::RegisterPlugin(GetPluginNameStatic(),
- GetPluginDescriptionStatic(), CreateInstance,
- DebuggerInitialize);
-}
-
-void DynamicLoaderDarwinKernel::Terminate() {
- PluginManager::UnregisterPlugin(CreateInstance);
-}
-
-void DynamicLoaderDarwinKernel::DebuggerInitialize(
- lldb_private::Debugger &debugger) {
- if (!PluginManager::GetSettingForDynamicLoaderPlugin(
- debugger, DynamicLoaderDarwinKernelProperties::GetSettingName())) {
- const bool is_global_setting = true;
- PluginManager::CreateSettingForDynamicLoaderPlugin(
- debugger, GetGlobalProperties()->GetValueProperties(),
- ConstString("Properties for the DynamicLoaderDarwinKernel plug-in."),
- is_global_setting);
- }
-}
-
-lldb_private::ConstString DynamicLoaderDarwinKernel::GetPluginNameStatic() {
- static ConstString g_name("darwin-kernel");
- return g_name;
-}
-
-const char *DynamicLoaderDarwinKernel::GetPluginDescriptionStatic() {
- return "Dynamic loader plug-in that watches for shared library loads/unloads "
- "in the MacOSX kernel.";
-}
-
-//------------------------------------------------------------------
-// PluginInterface protocol
-//------------------------------------------------------------------
-lldb_private::ConstString DynamicLoaderDarwinKernel::GetPluginName() {
- return GetPluginNameStatic();
-}
-
-uint32_t DynamicLoaderDarwinKernel::GetPluginVersion() { return 1; }
-
-lldb::ByteOrder
-DynamicLoaderDarwinKernel::GetByteOrderFromMagic(uint32_t magic) {
- switch (magic) {
- case llvm::MachO::MH_MAGIC:
- case llvm::MachO::MH_MAGIC_64:
- return endian::InlHostByteOrder();
-
- case llvm::MachO::MH_CIGAM:
- case llvm::MachO::MH_CIGAM_64:
- if (endian::InlHostByteOrder() == lldb::eByteOrderBig)
- return lldb::eByteOrderLittle;
- else
- return lldb::eByteOrderBig;
-
- default:
- break;
- }
- return lldb::eByteOrderInvalid;
-}
diff --git a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h b/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h
deleted file mode 100644
index 7aacebd9b50f..000000000000
--- a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h
+++ /dev/null
@@ -1,307 +0,0 @@
-//===-- DynamicLoaderDarwinKernel.h -----------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef liblldb_DynamicLoaderDarwinKernel_h_
-#define liblldb_DynamicLoaderDarwinKernel_h_
-
-#include <mutex>
-#include <string>
-#include <vector>
-
-
-#include "lldb/Host/SafeMachO.h"
-
-#include "lldb/Target/DynamicLoader.h"
-#include "lldb/Target/Process.h"
-#include "lldb/Utility/FileSpec.h"
-#include "lldb/Utility/UUID.h"
-
-class DynamicLoaderDarwinKernel : public lldb_private::DynamicLoader {
-public:
- DynamicLoaderDarwinKernel(lldb_private::Process *process,
- lldb::addr_t kernel_addr);
-
- ~DynamicLoaderDarwinKernel() override;
-
- //------------------------------------------------------------------
- // Static Functions
- //------------------------------------------------------------------
- static void Initialize();
-
- static void Terminate();
-
- static lldb_private::ConstString GetPluginNameStatic();
-
- static const char *GetPluginDescriptionStatic();
-
- static lldb_private::DynamicLoader *
- CreateInstance(lldb_private::Process *process, bool force);
-
- static void DebuggerInitialize(lldb_private::Debugger &debugger);
-
- static lldb::addr_t SearchForDarwinKernel(lldb_private::Process *process);
-
- //------------------------------------------------------------------
- /// Called after attaching a process.
- ///
- /// Allow DynamicLoader plug-ins to execute some code after
- /// attaching to a process.
- //------------------------------------------------------------------
- void DidAttach() override;
-
- void DidLaunch() override;
-
- lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread,
- bool stop_others) override;
-
- lldb_private::Status CanLoadImage() override;
-
- //------------------------------------------------------------------
- // PluginInterface protocol
- //------------------------------------------------------------------
- lldb_private::ConstString GetPluginName() override;
-
- uint32_t GetPluginVersion() override;
-
-protected:
- void PrivateInitialize(lldb_private::Process *process);
-
- void PrivateProcessStateChanged(lldb_private::Process *process,
- lldb::StateType state);
-
- void UpdateIfNeeded();
-
- void LoadKernelModuleIfNeeded();
-
- void Clear(bool clear_process);
-
- void PutToLog(lldb_private::Log *log) const;
-
- static bool
- BreakpointHitCallback(void *baton,
- lldb_private::StoppointCallbackContext *context,
- lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
-
- bool BreakpointHit(lldb_private::StoppointCallbackContext *context,
- lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
- uint32_t GetAddrByteSize() { return m_kernel.GetAddressByteSize(); }
-
- static lldb::ByteOrder GetByteOrderFromMagic(uint32_t magic);
-
- enum {
- KERNEL_MODULE_MAX_NAME = 64u,
- // Versions less than 2 didn't have an entry size,
- // they had a 64 bit name, 16 byte UUID, 8 byte addr,
- // 8 byte size, 8 byte version, 4 byte load tag, and
- // 4 byte flags
- KERNEL_MODULE_ENTRY_SIZE_VERSION_1 = 64u + 16u + 8u + 8u + 8u + 4u + 4u
- };
-
- // class KextImageInfo represents a single kext or kernel binary image.
- // The class was designed to hold the information from the
- // OSKextLoadedKextSummary
- // structure (in libkern/libkern/OSKextLibPrivate.h from xnu). The kernel
- // maintains
- // a list of loded kexts in memory (the OSKextLoadedKextSummaryHeader
- // structure,
- // which points to an array of OSKextLoadedKextSummary's).
- //
- // A KextImageInfos may have -
- //
- // 1. The load address, name, UUID, and size of a kext/kernel binary in memory
- // (read straight out of the kernel's list-of-kexts loaded)
- // 2. A ModuleSP based on a MemoryModule read out of the kernel's memory
- // (very unlikely to have any symbolic information)
- // 3. A ModuleSP for an on-disk copy of the kext binary, possibly with debug
- // info
- // or a dSYM
- //
- // For performance reasons, the developer may prefer that lldb not load the
- // kexts out
- // of memory at the start of a kernel session. But we should build up /
- // maintain a
- // list of kexts that the kernel has told us about so we can relocate a kext
- // module
- // later if the user explicitly adds it to the target.
-
- class KextImageInfo {
- public:
- KextImageInfo()
- : m_name(), m_module_sp(), m_memory_module_sp(),
- m_load_process_stop_id(UINT32_MAX), m_uuid(),
- m_load_address(LLDB_INVALID_ADDRESS), m_size(0),
- m_kernel_image(false) {}
-
- void Clear() {
- m_load_address = LLDB_INVALID_ADDRESS;
- m_size = 0;
- m_name.clear();
- m_uuid.Clear();
- m_module_sp.reset();
- m_memory_module_sp.reset();
- m_load_process_stop_id = UINT32_MAX;
- }
-
- bool LoadImageAtFileAddress(lldb_private::Process *process);
-
- bool LoadImageUsingMemoryModule(lldb_private::Process *process);
-
- bool IsLoaded() { return m_load_process_stop_id != UINT32_MAX; }
-
- void SetLoadAddress(
- lldb::addr_t load_addr); // Address of the Mach-O header for this binary
-
- lldb::addr_t
- GetLoadAddress() const; // Address of the Mach-O header for this binary
-
- lldb_private::UUID GetUUID() const;
-
- void SetUUID(const lldb_private::UUID &uuid);
-
- void SetName(const char *);
-
- std::string GetName() const;
-
- void SetModule(lldb::ModuleSP module);
-
- lldb::ModuleSP GetModule();
-
- // try to fill in m_memory_module_sp from memory based on the m_load_address
- bool ReadMemoryModule(lldb_private::Process *process);
-
- bool IsKernel()
- const; // true if this is the mach_kernel; false if this is a kext
-
- void SetIsKernel(bool is_kernel);
-
- uint64_t GetSize() const;
-
- void SetSize(uint64_t size);
-
- uint32_t
- GetProcessStopId() const; // the stop-id when this binary was first noticed
-
- void SetProcessStopId(uint32_t stop_id);
-
- bool operator==(const KextImageInfo &rhs);
-
- uint32_t GetAddressByteSize(); // as determined by Mach-O header
-
- lldb::ByteOrder GetByteOrder(); // as determined by Mach-O header
-
- lldb_private::ArchSpec
- GetArchitecture() const; // as determined by Mach-O header
-
- void PutToLog(lldb_private::Log *log) const;
-
- typedef std::vector<KextImageInfo> collection;
- typedef collection::iterator iterator;
- typedef collection::const_iterator const_iterator;
-
- private:
- std::string m_name;
- lldb::ModuleSP m_module_sp;
- lldb::ModuleSP m_memory_module_sp;
- uint32_t m_load_process_stop_id; // the stop-id when this module was added
- // to the Target
- lldb_private::UUID
- m_uuid; // UUID for this dylib if it has one, else all zeros
- lldb::addr_t m_load_address;
- uint64_t m_size;
- bool m_kernel_image; // true if this is the kernel, false if this is a kext
- };
-
- struct OSKextLoadedKextSummaryHeader {
- uint32_t version;
- uint32_t entry_size;
- uint32_t entry_count;
- lldb::addr_t image_infos_addr;
-
- OSKextLoadedKextSummaryHeader()
- : version(0), entry_size(0), entry_count(0),
- image_infos_addr(LLDB_INVALID_ADDRESS) {}
-
- uint32_t GetSize() {
- switch (version) {
- case 0:
- return 0; // Can't know the size without a valid version
- case 1:
- return 8; // Version 1 only had a version + entry_count
- default:
- break;
- }
- // Version 2 and above has version, entry_size, entry_count, and reserved
- return 16;
- }
-
- void Clear() {
- version = 0;
- entry_size = 0;
- entry_count = 0;
- image_infos_addr = LLDB_INVALID_ADDRESS;
- }
-
- bool IsValid() const { return version >= 1 || version <= 2; }
- };
-
- void RegisterNotificationCallbacks();
-
- void UnregisterNotificationCallbacks();
-
- void SetNotificationBreakpointIfNeeded();
-
- bool ReadAllKextSummaries();
-
- bool ReadKextSummaryHeader();
-
- bool ParseKextSummaries(const lldb_private::Address &kext_summary_addr,
- uint32_t count);
-
- void
- UpdateImageInfosHeaderAndLoadCommands(KextImageInfo::collection &image_infos,
- uint32_t infos_count,
- bool update_executable);
-
- uint32_t ReadKextSummaries(const lldb_private::Address &kext_summary_addr,
- uint32_t image_infos_count,
- KextImageInfo::collection &image_infos);
-
- static lldb::addr_t
- SearchForKernelAtSameLoadAddr(lldb_private::Process *process);
-
- static lldb::addr_t
- SearchForKernelWithDebugHints(lldb_private::Process *process);
-
- static lldb::addr_t SearchForKernelNearPC(lldb_private::Process *process);
-
- static lldb::addr_t
- SearchForKernelViaExhaustiveSearch(lldb_private::Process *process);
-
- static bool
- ReadMachHeader(lldb::addr_t addr, lldb_private::Process *process, llvm::MachO::mach_header &mh);
-
- static lldb_private::UUID
- CheckForKernelImageAtAddress(lldb::addr_t addr,
- lldb_private::Process *process);
-
- lldb::addr_t m_kernel_load_address;
- KextImageInfo m_kernel; // Info about the current kernel image being used
-
- lldb_private::Address m_kext_summary_header_ptr_addr;
- lldb_private::Address m_kext_summary_header_addr;
- OSKextLoadedKextSummaryHeader m_kext_summary_header;
- KextImageInfo::collection m_known_kexts;
- mutable std::recursive_mutex m_mutex;
- lldb::user_id_t m_break_id;
-
-private:
- DISALLOW_COPY_AND_ASSIGN(DynamicLoaderDarwinKernel);
-};
-
-#endif // liblldb_DynamicLoaderDarwinKernel_h_
diff --git a/source/Plugins/DynamicLoader/Hexagon-DYLD/CMakeLists.txt b/source/Plugins/DynamicLoader/Hexagon-DYLD/CMakeLists.txt
deleted file mode 100644
index c590457d0a54..000000000000
--- a/source/Plugins/DynamicLoader/Hexagon-DYLD/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderHexagonDYLD PLUGIN
- HexagonDYLDRendezvous.cpp
- DynamicLoaderHexagonDYLD.cpp
-
- LINK_LIBS
- lldbBreakpoint
- lldbCore
- lldbSymbol
- lldbTarget
- )
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/CMakeLists.txt b/source/Plugins/DynamicLoader/MacOSX-DYLD/CMakeLists.txt
deleted file mode 100644
index 515c82dcaca9..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderMacOSXDYLD PLUGIN
- DynamicLoaderMacOSXDYLD.cpp
- DynamicLoaderMacOS.cpp
- DynamicLoaderDarwin.cpp
-
- LINK_LIBS
- lldbBreakpoint
- lldbCore
- lldbExpression
- lldbHost
- lldbSymbol
- lldbTarget
- lldbUtility
- LINK_COMPONENTS
- Support
- )
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
deleted file mode 100644
index 944be9633e00..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
+++ /dev/null
@@ -1,1143 +0,0 @@
-//===-- DynamicLoaderDarwin.cpp -----------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "DynamicLoaderDarwin.h"
-
-#include "lldb/Breakpoint/StoppointCallbackContext.h"
-#include "lldb/Core/Debugger.h"
-#include "lldb/Core/Module.h"
-#include "lldb/Core/ModuleSpec.h"
-#include "lldb/Core/PluginManager.h"
-#include "lldb/Core/Section.h"
-#include "lldb/Expression/DiagnosticManager.h"
-#include "lldb/Host/FileSystem.h"
-#include "lldb/Symbol/ClangASTContext.h"
-#include "lldb/Symbol/Function.h"
-#include "lldb/Symbol/ObjectFile.h"
-#include "lldb/Target/ABI.h"
-#include "lldb/Target/ObjCLanguageRuntime.h"
-#include "lldb/Target/RegisterContext.h"
-#include "lldb/Target/StackFrame.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Target/Thread.h"
-#include "lldb/Target/ThreadPlanCallFunction.h"
-#include "lldb/Target/ThreadPlanRunToAddress.h"
-#include "lldb/Utility/DataBuffer.h"
-#include "lldb/Utility/DataBufferHeap.h"
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/State.h"
-
-//#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
-#ifdef ENABLE_DEBUG_PRINTF
-#include <stdio.h>
-#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
-#else
-#define DEBUG_PRINTF(fmt, ...)
-#endif
-
-#ifndef __APPLE__
-#include "Utility/UuidCompatibility.h"
-#else
-#include <uuid/uuid.h>
-#endif
-
-using namespace lldb;
-using namespace lldb_private;
-
-//----------------------------------------------------------------------
-// Constructor
-//----------------------------------------------------------------------
-DynamicLoaderDarwin::DynamicLoaderDarwin(Process *process)
- : DynamicLoader(process), m_dyld_module_wp(), m_libpthread_module_wp(),
- m_pthread_getspecific_addr(), m_tid_to_tls_map(), m_dyld_image_infos(),
- m_dyld_image_infos_stop_id(UINT32_MAX), m_dyld(), m_mutex() {}
-
-//----------------------------------------------------------------------
-// Destructor
-//----------------------------------------------------------------------
-DynamicLoaderDarwin::~DynamicLoaderDarwin() {}
-
-//------------------------------------------------------------------
-/// Called after attaching a process.
-///
-/// Allow DynamicLoader plug-ins to execute some code after
-/// attaching to a process.
-//------------------------------------------------------------------
-void DynamicLoaderDarwin::DidAttach() {
- PrivateInitialize(m_process);
- DoInitialImageFetch();
- SetNotificationBreakpoint();
-}
-
-//------------------------------------------------------------------
-/// Called after attaching a process.
-///
-/// Allow DynamicLoader plug-ins to execute some code after
-/// attaching to a process.
-//------------------------------------------------------------------
-void DynamicLoaderDarwin::DidLaunch() {
- PrivateInitialize(m_process);
- DoInitialImageFetch();
- SetNotificationBreakpoint();
-}
-
-//----------------------------------------------------------------------
-// Clear out the state of this class.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwin::Clear(bool clear_process) {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- if (clear_process)
- m_process = NULL;
- m_dyld_image_infos.clear();
- m_dyld_image_infos_stop_id = UINT32_MAX;
- m_dyld.Clear(false);
-}
-
-ModuleSP DynamicLoaderDarwin::FindTargetModuleForImageInfo(
- ImageInfo &image_info, bool can_create, bool *did_create_ptr) {
- if (did_create_ptr)
- *did_create_ptr = false;
-
- Target &target = m_process->GetTarget();
- const ModuleList &target_images = target.GetImages();
- ModuleSpec module_spec(image_info.file_spec);
- module_spec.GetUUID() = image_info.uuid;
- ModuleSP module_sp(target_images.FindFirstModule(module_spec));
-
- if (module_sp && !module_spec.GetUUID().IsValid() &&
- !module_sp->GetUUID().IsValid()) {
- // No UUID, we must rely upon the cached module modification time and the
- // modification time of the file on disk
- if (module_sp->GetModificationTime() !=
- FileSystem::Instance().GetModificationTime(module_sp->GetFileSpec()))
- module_sp.reset();
- }
-
- if (!module_sp) {
- if (can_create) {
- module_sp = target.GetSharedModule(module_spec);
- if (!module_sp || module_sp->GetObjectFile() == NULL)
- module_sp = m_process->ReadModuleFromMemory(image_info.file_spec,
- image_info.address);
-
- if (did_create_ptr)
- *did_create_ptr = (bool)module_sp;
- }
- }
- return module_sp;
-}
-
-void DynamicLoaderDarwin::UnloadImages(
- const std::vector<lldb::addr_t> &solib_addresses) {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- if (m_process->GetStopID() == m_dyld_image_infos_stop_id)
- return;
-
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- Target &target = m_process->GetTarget();
- if (log)
- log->Printf("Removing %" PRId64 " modules.",
- (uint64_t)solib_addresses.size());
-
- ModuleList unloaded_module_list;
-
- for (addr_t solib_addr : solib_addresses) {
- Address header;
- if (header.SetLoadAddress(solib_addr, &target)) {
- if (header.GetOffset() == 0) {
- ModuleSP module_to_remove(header.GetModule());
- if (module_to_remove.get()) {
- if (log)
- log->Printf("Removing module at address 0x%" PRIx64, solib_addr);
- // remove the sections from the Target
- UnloadSections(module_to_remove);
- // add this to the list of modules to remove
- unloaded_module_list.AppendIfNeeded(module_to_remove);
- // remove the entry from the m_dyld_image_infos
- ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
- for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
- if (solib_addr == (*pos).address) {
- m_dyld_image_infos.erase(pos);
- break;
- }
- }
- }
- }
- }
- }
-
- if (unloaded_module_list.GetSize() > 0) {
- if (log) {
- log->PutCString("Unloaded:");
- unloaded_module_list.LogUUIDAndPaths(
- log, "DynamicLoaderDarwin::UnloadModules");
- }
- m_process->GetTarget().GetImages().Remove(unloaded_module_list);
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- }
-}
-
-void DynamicLoaderDarwin::UnloadAllImages() {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- ModuleList unloaded_modules_list;
-
- Target &target = m_process->GetTarget();
- const ModuleList &target_modules = target.GetImages();
- std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex());
-
- size_t num_modules = target_modules.GetSize();
- ModuleSP dyld_sp(GetDYLDModule());
-
- for (size_t i = 0; i < num_modules; i++) {
- ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked(i);
-
- // Don't remove dyld - else we'll lose our breakpoint notifying us about
- // libraries being re-loaded...
- if (module_sp.get() != nullptr && module_sp.get() != dyld_sp.get()) {
- UnloadSections(module_sp);
- unloaded_modules_list.Append(module_sp);
- }
- }
-
- if (unloaded_modules_list.GetSize() != 0) {
- if (log) {
- log->PutCString("Unloaded:");
- unloaded_modules_list.LogUUIDAndPaths(
- log, "DynamicLoaderDarwin::UnloadAllImages");
- }
- target.GetImages().Remove(unloaded_modules_list);
- m_dyld_image_infos.clear();
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- }
-}
-
-//----------------------------------------------------------------------
-// Update the load addresses for all segments in MODULE using the updated INFO
-// that is passed in.
-//----------------------------------------------------------------------
-bool DynamicLoaderDarwin::UpdateImageLoadAddress(Module *module,
- ImageInfo &info) {
- bool changed = false;
- if (module) {
- ObjectFile *image_object_file = module->GetObjectFile();
- if (image_object_file) {
- SectionList *section_list = image_object_file->GetSectionList();
- if (section_list) {
- std::vector<uint32_t> inaccessible_segment_indexes;
- // We now know the slide amount, so go through all sections and update
- // the load addresses with the correct values.
- const size_t num_segments = info.segments.size();
- for (size_t i = 0; i < num_segments; ++i) {
- // Only load a segment if it has protections. Things like __PAGEZERO
- // don't have any protections, and they shouldn't be slid
- SectionSP section_sp(
- section_list->FindSectionByName(info.segments[i].name));
-
- if (info.segments[i].maxprot == 0) {
- inaccessible_segment_indexes.push_back(i);
- } else {
- const addr_t new_section_load_addr =
- info.segments[i].vmaddr + info.slide;
- static ConstString g_section_name_LINKEDIT("__LINKEDIT");
-
- if (section_sp) {
- // __LINKEDIT sections from files in the shared cache can overlap
- // so check to see what the segment name is and pass "false" so
- // we don't warn of overlapping "Section" objects, and "true" for
- // all other sections.
- const bool warn_multiple =
- section_sp->GetName() != g_section_name_LINKEDIT;
-
- changed = m_process->GetTarget().SetSectionLoadAddress(
- section_sp, new_section_load_addr, warn_multiple);
- } else {
- Host::SystemLog(
- Host::eSystemLogWarning,
- "warning: unable to find and load segment named '%s' at "
- "0x%" PRIx64 " in '%s' in macosx dynamic loader plug-in.\n",
- info.segments[i].name.AsCString("<invalid>"),
- (uint64_t)new_section_load_addr,
- image_object_file->GetFileSpec().GetPath().c_str());
- }
- }
- }
-
- // If the loaded the file (it changed) and we have segments that are
- // not readable or writeable, add them to the invalid memory region
- // cache for the process. This will typically only be the __PAGEZERO
- // segment in the main executable. We might be able to apply this more
- // generally to more sections that have no protections in the future,
- // but for now we are going to just do __PAGEZERO.
- if (changed && !inaccessible_segment_indexes.empty()) {
- for (uint32_t i = 0; i < inaccessible_segment_indexes.size(); ++i) {
- const uint32_t seg_idx = inaccessible_segment_indexes[i];
- SectionSP section_sp(
- section_list->FindSectionByName(info.segments[seg_idx].name));
-
- if (section_sp) {
- static ConstString g_pagezero_section_name("__PAGEZERO");
- if (g_pagezero_section_name == section_sp->GetName()) {
- // __PAGEZERO never slides...
- const lldb::addr_t vmaddr = info.segments[seg_idx].vmaddr;
- const lldb::addr_t vmsize = info.segments[seg_idx].vmsize;
- Process::LoadRange pagezero_range(vmaddr, vmsize);
- m_process->AddInvalidMemoryRegion(pagezero_range);
- }
- }
- }
- }
- }
- }
- }
- // We might have an in memory image that was loaded as soon as it was created
- if (info.load_stop_id == m_process->GetStopID())
- changed = true;
- else if (changed) {
- // Update the stop ID when this library was updated
- info.load_stop_id = m_process->GetStopID();
- }
- return changed;
-}
-
-//----------------------------------------------------------------------
-// Unload the segments in MODULE using the INFO that is passed in.
-//----------------------------------------------------------------------
-bool DynamicLoaderDarwin::UnloadModuleSections(Module *module,
- ImageInfo &info) {
- bool changed = false;
- if (module) {
- ObjectFile *image_object_file = module->GetObjectFile();
- if (image_object_file) {
- SectionList *section_list = image_object_file->GetSectionList();
- if (section_list) {
- const size_t num_segments = info.segments.size();
- for (size_t i = 0; i < num_segments; ++i) {
- SectionSP section_sp(
- section_list->FindSectionByName(info.segments[i].name));
- if (section_sp) {
- const addr_t old_section_load_addr =
- info.segments[i].vmaddr + info.slide;
- if (m_process->GetTarget().SetSectionUnloaded(
- section_sp, old_section_load_addr))
- changed = true;
- } else {
- Host::SystemLog(Host::eSystemLogWarning,
- "warning: unable to find and unload segment named "
- "'%s' in '%s' in macosx dynamic loader plug-in.\n",
- info.segments[i].name.AsCString("<invalid>"),
- image_object_file->GetFileSpec().GetPath().c_str());
- }
- }
- }
- }
- }
- return changed;
-}
-
-// Given a JSON dictionary (from debugserver, most likely) of binary images
-// loaded in the inferior process, add the images to the ImageInfo collection.
-
-bool DynamicLoaderDarwin::JSONImageInformationIntoImageInfo(
- StructuredData::ObjectSP image_details,
- ImageInfo::collection &image_infos) {
- StructuredData::ObjectSP images_sp =
- image_details->GetAsDictionary()->GetValueForKey("images");
- if (images_sp.get() == nullptr)
- return false;
-
- image_infos.resize(images_sp->GetAsArray()->GetSize());
-
- for (size_t i = 0; i < image_infos.size(); i++) {
- StructuredData::ObjectSP image_sp =
- images_sp->GetAsArray()->GetItemAtIndex(i);
- if (image_sp.get() == nullptr || image_sp->GetAsDictionary() == nullptr)
- return false;
- StructuredData::Dictionary *image = image_sp->GetAsDictionary();
- // clang-format off
- if (!image->HasKey("load_address") ||
- !image->HasKey("pathname") ||
- !image->HasKey("mod_date") ||
- !image->HasKey("mach_header") ||
- image->GetValueForKey("mach_header")->GetAsDictionary() == nullptr ||
- !image->HasKey("segments") ||
- image->GetValueForKey("segments")->GetAsArray() == nullptr ||
- !image->HasKey("uuid")) {
- return false;
- }
- // clang-format on
- image_infos[i].address =
- image->GetValueForKey("load_address")->GetAsInteger()->GetValue();
- image_infos[i].mod_date =
- image->GetValueForKey("mod_date")->GetAsInteger()->GetValue();
- image_infos[i].file_spec.SetFile(
- image->GetValueForKey("pathname")->GetAsString()->GetValue(),
- FileSpec::Style::native);
-
- StructuredData::Dictionary *mh =
- image->GetValueForKey("mach_header")->GetAsDictionary();
- image_infos[i].header.magic =
- mh->GetValueForKey("magic")->GetAsInteger()->GetValue();
- image_infos[i].header.cputype =
- mh->GetValueForKey("cputype")->GetAsInteger()->GetValue();
- image_infos[i].header.cpusubtype =
- mh->GetValueForKey("cpusubtype")->GetAsInteger()->GetValue();
- image_infos[i].header.filetype =
- mh->GetValueForKey("filetype")->GetAsInteger()->GetValue();
-
- if (image->HasKey("min_version_os_name")) {
- std::string os_name = image->GetValueForKey("min_version_os_name")
- ->GetAsString()
- ->GetValue();
- if (os_name == "macosx")
- image_infos[i].os_type = llvm::Triple::MacOSX;
- else if (os_name == "ios" || os_name == "iphoneos")
- image_infos[i].os_type = llvm::Triple::IOS;
- else if (os_name == "tvos")
- image_infos[i].os_type = llvm::Triple::TvOS;
- else if (os_name == "watchos")
- image_infos[i].os_type = llvm::Triple::WatchOS;
- // NEED_BRIDGEOS_TRIPLE else if (os_name == "bridgeos")
- // NEED_BRIDGEOS_TRIPLE image_infos[i].os_type = llvm::Triple::BridgeOS;
- }
- if (image->HasKey("min_version_os_sdk")) {
- image_infos[i].min_version_os_sdk =
- image->GetValueForKey("min_version_os_sdk")
- ->GetAsString()
- ->GetValue();
- }
-
- // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't
- // currently send them in the reply.
-
- if (mh->HasKey("flags"))
- image_infos[i].header.flags =
- mh->GetValueForKey("flags")->GetAsInteger()->GetValue();
- else
- image_infos[i].header.flags = 0;
-
- if (mh->HasKey("ncmds"))
- image_infos[i].header.ncmds =
- mh->GetValueForKey("ncmds")->GetAsInteger()->GetValue();
- else
- image_infos[i].header.ncmds = 0;
-
- if (mh->HasKey("sizeofcmds"))
- image_infos[i].header.sizeofcmds =
- mh->GetValueForKey("sizeofcmds")->GetAsInteger()->GetValue();
- else
- image_infos[i].header.sizeofcmds = 0;
-
- StructuredData::Array *segments =
- image->GetValueForKey("segments")->GetAsArray();
- uint32_t segcount = segments->GetSize();
- for (size_t j = 0; j < segcount; j++) {
- Segment segment;
- StructuredData::Dictionary *seg =
- segments->GetItemAtIndex(j)->GetAsDictionary();
- segment.name =
- ConstString(seg->GetValueForKey("name")->GetAsString()->GetValue());
- segment.vmaddr =
- seg->GetValueForKey("vmaddr")->GetAsInteger()->GetValue();
- segment.vmsize =
- seg->GetValueForKey("vmsize")->GetAsInteger()->GetValue();
- segment.fileoff =
- seg->GetValueForKey("fileoff")->GetAsInteger()->GetValue();
- segment.filesize =
- seg->GetValueForKey("filesize")->GetAsInteger()->GetValue();
- segment.maxprot =
- seg->GetValueForKey("maxprot")->GetAsInteger()->GetValue();
-
- // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't
- // currently send them in the reply.
-
- if (seg->HasKey("initprot"))
- segment.initprot =
- seg->GetValueForKey("initprot")->GetAsInteger()->GetValue();
- else
- segment.initprot = 0;
-
- if (seg->HasKey("flags"))
- segment.flags =
- seg->GetValueForKey("flags")->GetAsInteger()->GetValue();
- else
- segment.flags = 0;
-
- if (seg->HasKey("nsects"))
- segment.nsects =
- seg->GetValueForKey("nsects")->GetAsInteger()->GetValue();
- else
- segment.nsects = 0;
-
- image_infos[i].segments.push_back(segment);
- }
-
- image_infos[i].uuid.SetFromStringRef(
- image->GetValueForKey("uuid")->GetAsString()->GetValue());
-
- // All sections listed in the dyld image info structure will all either be
- // fixed up already, or they will all be off by a single slide amount that
- // is determined by finding the first segment that is at file offset zero
- // which also has bytes (a file size that is greater than zero) in the
- // object file.
-
- // Determine the slide amount (if any)
- const size_t num_sections = image_infos[i].segments.size();
- for (size_t k = 0; k < num_sections; ++k) {
- // Iterate through the object file sections to find the first section
- // that starts of file offset zero and that has bytes in the file...
- if ((image_infos[i].segments[k].fileoff == 0 &&
- image_infos[i].segments[k].filesize > 0) ||
- (image_infos[i].segments[k].name == ConstString("__TEXT"))) {
- image_infos[i].slide =
- image_infos[i].address - image_infos[i].segments[k].vmaddr;
- // We have found the slide amount, so we can exit this for loop.
- break;
- }
- }
- }
-
- return true;
-}
-
-void DynamicLoaderDarwin::UpdateSpecialBinariesFromNewImageInfos(
- ImageInfo::collection &image_infos) {
- uint32_t exe_idx = UINT32_MAX;
- uint32_t dyld_idx = UINT32_MAX;
- Target &target = m_process->GetTarget();
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- ConstString g_dyld_sim_filename("dyld_sim");
-
- ArchSpec target_arch = target.GetArchitecture();
- const size_t image_infos_size = image_infos.size();
- for (size_t i = 0; i < image_infos_size; i++) {
- if (image_infos[i].header.filetype == llvm::MachO::MH_DYLINKER) {
- // In a "simulator" process (an x86 process that is
- // ios/tvos/watchos/bridgeos) we will have two dyld modules --
- // a "dyld" that we want to keep track of, and a "dyld_sim" which
- // we don't need to keep track of here. If the target is an x86
- // system and the OS of the dyld binary is ios/tvos/watchos/bridgeos,
- // then we are looking at dyld_sym.
-
- // debugserver has only recently (late 2016) started sending up the os
- // type for each binary it sees -- so if we don't have an os type, use a
- // filename check as our next best guess.
- if (image_infos[i].os_type == llvm::Triple::OSType::UnknownOS) {
- if (image_infos[i].file_spec.GetFilename() != g_dyld_sim_filename) {
- dyld_idx = i;
- }
- } else if (target_arch.GetTriple().getArch() == llvm::Triple::x86 ||
- target_arch.GetTriple().getArch() == llvm::Triple::x86_64) {
- if (image_infos[i].os_type != llvm::Triple::OSType::IOS &&
- image_infos[i].os_type != llvm::Triple::TvOS &&
- image_infos[i].os_type != llvm::Triple::WatchOS) {
- // NEED_BRIDGEOS_TRIPLE image_infos[i].os_type != llvm::Triple::BridgeOS) {
- dyld_idx = i;
- }
- }
- else {
- // catch-all for any other environment -- trust that dyld is actually
- // dyld
- dyld_idx = i;
- }
- } else if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) {
- exe_idx = i;
- }
- }
-
- if (exe_idx != UINT32_MAX) {
- const bool can_create = true;
- ModuleSP exe_module_sp(
- FindTargetModuleForImageInfo(image_infos[exe_idx], can_create, NULL));
- if (exe_module_sp) {
- if (log)
- log->Printf("Found executable module: %s",
- exe_module_sp->GetFileSpec().GetPath().c_str());
- target.GetImages().AppendIfNeeded(exe_module_sp);
- UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
- if (exe_module_sp.get() != target.GetExecutableModulePointer()) {
- target.SetExecutableModule(exe_module_sp, eLoadDependentsNo);
- }
- }
- }
-
- if (dyld_idx != UINT32_MAX) {
- const bool can_create = true;
- ModuleSP dyld_sp =
- FindTargetModuleForImageInfo(image_infos[dyld_idx], can_create, NULL);
- if (dyld_sp.get()) {
- if (log)
- log->Printf("Found dyld module: %s",
- dyld_sp->GetFileSpec().GetPath().c_str());
- target.GetImages().AppendIfNeeded(dyld_sp);
- UpdateImageLoadAddress(dyld_sp.get(), image_infos[dyld_idx]);
- SetDYLDModule(dyld_sp);
- }
- }
-}
-
-void DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo(
- ImageInfo &image_info) {
- if (image_info.header.filetype == llvm::MachO::MH_DYLINKER) {
- const bool can_create = true;
- ModuleSP dyld_sp =
- FindTargetModuleForImageInfo(image_info, can_create, NULL);
- if (dyld_sp.get()) {
- Target &target = m_process->GetTarget();
- target.GetImages().AppendIfNeeded(dyld_sp);
- UpdateImageLoadAddress(dyld_sp.get(), image_info);
- SetDYLDModule(dyld_sp);
- }
- }
-}
-
-void DynamicLoaderDarwin::SetDYLDModule(lldb::ModuleSP &dyld_module_sp) {
- m_dyld_module_wp = dyld_module_sp;
-}
-
-ModuleSP DynamicLoaderDarwin::GetDYLDModule() {
- ModuleSP dyld_sp(m_dyld_module_wp.lock());
- return dyld_sp;
-}
-
-bool DynamicLoaderDarwin::AddModulesUsingImageInfos(
- ImageInfo::collection &image_infos) {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- // Now add these images to the main list.
- ModuleList loaded_module_list;
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- Target &target = m_process->GetTarget();
- ModuleList &target_images = target.GetImages();
-
- for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
- if (log) {
- log->Printf("Adding new image at address=0x%16.16" PRIx64 ".",
- image_infos[idx].address);
- image_infos[idx].PutToLog(log);
- }
-
- m_dyld_image_infos.push_back(image_infos[idx]);
-
- ModuleSP image_module_sp(
- FindTargetModuleForImageInfo(image_infos[idx], true, NULL));
-
- if (image_module_sp) {
- ObjectFile *objfile = image_module_sp->GetObjectFile();
- if (objfile) {
- SectionList *sections = objfile->GetSectionList();
- if (sections) {
- ConstString commpage_dbstr("__commpage");
- Section *commpage_section =
- sections->FindSectionByName(commpage_dbstr).get();
- if (commpage_section) {
- ModuleSpec module_spec(objfile->GetFileSpec(),
- image_infos[idx].GetArchitecture());
- module_spec.GetObjectName() = commpage_dbstr;
- ModuleSP commpage_image_module_sp(
- target_images.FindFirstModule(module_spec));
- if (!commpage_image_module_sp) {
- module_spec.SetObjectOffset(objfile->GetFileOffset() +
- commpage_section->GetFileOffset());
- module_spec.SetObjectSize(objfile->GetByteSize());
- commpage_image_module_sp = target.GetSharedModule(module_spec);
- if (!commpage_image_module_sp ||
- commpage_image_module_sp->GetObjectFile() == NULL) {
- commpage_image_module_sp = m_process->ReadModuleFromMemory(
- image_infos[idx].file_spec, image_infos[idx].address);
- // Always load a memory image right away in the target in case
- // we end up trying to read the symbol table from memory... The
- // __LINKEDIT will need to be mapped so we can figure out where
- // the symbol table bits are...
- bool changed = false;
- UpdateImageLoadAddress(commpage_image_module_sp.get(),
- image_infos[idx]);
- target.GetImages().Append(commpage_image_module_sp);
- if (changed) {
- image_infos[idx].load_stop_id = m_process->GetStopID();
- loaded_module_list.AppendIfNeeded(commpage_image_module_sp);
- }
- }
- }
- }
- }
- }
-
- // UpdateImageLoadAddress will return true if any segments change load
- // address. We need to check this so we don't mention that all loaded
- // shared libraries are newly loaded each time we hit out dyld breakpoint
- // since dyld will list all shared libraries each time.
- if (UpdateImageLoadAddress(image_module_sp.get(), image_infos[idx])) {
- target_images.AppendIfNeeded(image_module_sp);
- loaded_module_list.AppendIfNeeded(image_module_sp);
- }
- }
- }
-
- if (loaded_module_list.GetSize() > 0) {
- if (log)
- loaded_module_list.LogUUIDAndPaths(log,
- "DynamicLoaderDarwin::ModulesDidLoad");
- m_process->GetTarget().ModulesDidLoad(loaded_module_list);
- }
- return true;
-}
-
-//----------------------------------------------------------------------
-// On Mac OS X libobjc (the Objective-C runtime) has several critical dispatch
-// functions written in hand-written assembly, and also have hand-written
-// unwind information in the eh_frame section. Normally we prefer analyzing
-// the assembly instructions of a currently executing frame to unwind from that
-// frame -- but on hand-written functions this profiling can fail. We should
-// use the eh_frame instructions for these functions all the time.
-//
-// As an aside, it would be better if the eh_frame entries had a flag (or were
-// extensible so they could have an Apple-specific flag) which indicates that
-// the instructions are asynchronous -- accurate at every instruction, instead
-// of our normal default assumption that they are not.
-//----------------------------------------------------------------------
-
-bool DynamicLoaderDarwin::AlwaysRelyOnEHUnwindInfo(SymbolContext &sym_ctx) {
- ModuleSP module_sp;
- if (sym_ctx.symbol) {
- module_sp = sym_ctx.symbol->GetAddressRef().GetModule();
- }
- if (module_sp.get() == NULL && sym_ctx.function) {
- module_sp =
- sym_ctx.function->GetAddressRange().GetBaseAddress().GetModule();
- }
- if (module_sp.get() == NULL)
- return false;
-
- ObjCLanguageRuntime *objc_runtime = m_process->GetObjCLanguageRuntime();
- return objc_runtime != NULL && objc_runtime->IsModuleObjCLibrary(module_sp);
-}
-
-//----------------------------------------------------------------------
-// Dump a Segment to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwin::Segment::PutToLog(Log *log,
- lldb::addr_t slide) const {
- if (log) {
- if (slide == 0)
- log->Printf("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")",
- name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize);
- else
- log->Printf("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64
- ") slide = 0x%" PRIx64,
- name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize,
- slide);
- }
-}
-
-const DynamicLoaderDarwin::Segment *
-DynamicLoaderDarwin::ImageInfo::FindSegment(const ConstString &name) const {
- const size_t num_segments = segments.size();
- for (size_t i = 0; i < num_segments; ++i) {
- if (segments[i].name == name)
- return &segments[i];
- }
- return NULL;
-}
-
-//----------------------------------------------------------------------
-// Dump an image info structure to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwin::ImageInfo::PutToLog(Log *log) const {
- if (!log)
- return;
- if (address == LLDB_INVALID_ADDRESS) {
- LLDB_LOG(log, "modtime={0:x+8} uuid={1} path='{2}' (UNLOADED)", mod_date,
- uuid.GetAsString(), file_spec.GetPath());
- } else {
- LLDB_LOG(log, "address={0:x+16} modtime={1:x+8} uuid={2} path='{3}'",
- address, mod_date, uuid.GetAsString(), file_spec.GetPath());
- for (uint32_t i = 0; i < segments.size(); ++i)
- segments[i].PutToLog(log, slide);
- }
-}
-
-void DynamicLoaderDarwin::PrivateInitialize(Process *process) {
- DEBUG_PRINTF("DynamicLoaderDarwin::%s() process state = %s\n", __FUNCTION__,
- StateAsCString(m_process->GetState()));
- Clear(true);
- m_process = process;
- m_process->GetTarget().ClearAllLoadedSections();
-}
-
-//----------------------------------------------------------------------
-// Member function that gets called when the process state changes.
-//----------------------------------------------------------------------
-void DynamicLoaderDarwin::PrivateProcessStateChanged(Process *process,
- StateType state) {
- DEBUG_PRINTF("DynamicLoaderDarwin::%s(%s)\n", __FUNCTION__,
- StateAsCString(state));
- switch (state) {
- case eStateConnected:
- case eStateAttaching:
- case eStateLaunching:
- case eStateInvalid:
- case eStateUnloaded:
- case eStateExited:
- case eStateDetached:
- Clear(false);
- break;
-
- case eStateStopped:
- // Keep trying find dyld and set our notification breakpoint each time we
- // stop until we succeed
- if (!DidSetNotificationBreakpoint() && m_process->IsAlive()) {
- if (NeedToDoInitialImageFetch())
- DoInitialImageFetch();
-
- SetNotificationBreakpoint();
- }
- break;
-
- case eStateRunning:
- case eStateStepping:
- case eStateCrashed:
- case eStateSuspended:
- break;
- }
-}
-
-ThreadPlanSP
-DynamicLoaderDarwin::GetStepThroughTrampolinePlan(Thread &thread,
- bool stop_others) {
- ThreadPlanSP thread_plan_sp;
- StackFrame *current_frame = thread.GetStackFrameAtIndex(0).get();
- const SymbolContext &current_context =
- current_frame->GetSymbolContext(eSymbolContextSymbol);
- Symbol *current_symbol = current_context.symbol;
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP));
- TargetSP target_sp(thread.CalculateTarget());
-
- if (current_symbol != NULL) {
- std::vector<Address> addresses;
-
- if (current_symbol->IsTrampoline()) {
- const ConstString &trampoline_name = current_symbol->GetMangled().GetName(
- current_symbol->GetLanguage(), Mangled::ePreferMangled);
-
- if (trampoline_name) {
- const ModuleList &images = target_sp->GetImages();
-
- SymbolContextList code_symbols;
- images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeCode,
- code_symbols);
- size_t num_code_symbols = code_symbols.GetSize();
-
- if (num_code_symbols > 0) {
- for (uint32_t i = 0; i < num_code_symbols; i++) {
- SymbolContext context;
- AddressRange addr_range;
- if (code_symbols.GetContextAtIndex(i, context)) {
- context.GetAddressRange(eSymbolContextEverything, 0, false,
- addr_range);
- addresses.push_back(addr_range.GetBaseAddress());
- if (log) {
- addr_t load_addr =
- addr_range.GetBaseAddress().GetLoadAddress(target_sp.get());
-
- log->Printf("Found a trampoline target symbol at 0x%" PRIx64
- ".",
- load_addr);
- }
- }
- }
- }
-
- SymbolContextList reexported_symbols;
- images.FindSymbolsWithNameAndType(
- trampoline_name, eSymbolTypeReExported, reexported_symbols);
- size_t num_reexported_symbols = reexported_symbols.GetSize();
- if (num_reexported_symbols > 0) {
- for (uint32_t i = 0; i < num_reexported_symbols; i++) {
- SymbolContext context;
- if (reexported_symbols.GetContextAtIndex(i, context)) {
- if (context.symbol) {
- Symbol *actual_symbol =
- context.symbol->ResolveReExportedSymbol(*target_sp.get());
- if (actual_symbol) {
- const Address actual_symbol_addr =
- actual_symbol->GetAddress();
- if (actual_symbol_addr.IsValid()) {
- addresses.push_back(actual_symbol_addr);
- if (log) {
- lldb::addr_t load_addr =
- actual_symbol_addr.GetLoadAddress(target_sp.get());
- log->Printf(
- "Found a re-exported symbol: %s at 0x%" PRIx64 ".",
- actual_symbol->GetName().GetCString(), load_addr);
- }
- }
- }
- }
- }
- }
- }
-
- SymbolContextList indirect_symbols;
- images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeResolver,
- indirect_symbols);
- size_t num_indirect_symbols = indirect_symbols.GetSize();
- if (num_indirect_symbols > 0) {
- for (uint32_t i = 0; i < num_indirect_symbols; i++) {
- SymbolContext context;
- AddressRange addr_range;
- if (indirect_symbols.GetContextAtIndex(i, context)) {
- context.GetAddressRange(eSymbolContextEverything, 0, false,
- addr_range);
- addresses.push_back(addr_range.GetBaseAddress());
- if (log) {
- addr_t load_addr =
- addr_range.GetBaseAddress().GetLoadAddress(target_sp.get());
-
- log->Printf("Found an indirect target symbol at 0x%" PRIx64 ".",
- load_addr);
- }
- }
- }
- }
- }
- } else if (current_symbol->GetType() == eSymbolTypeReExported) {
- // I am not sure we could ever end up stopped AT a re-exported symbol.
- // But just in case:
-
- const Symbol *actual_symbol =
- current_symbol->ResolveReExportedSymbol(*(target_sp.get()));
- if (actual_symbol) {
- Address target_addr(actual_symbol->GetAddress());
- if (target_addr.IsValid()) {
- if (log)
- log->Printf(
- "Found a re-exported symbol: %s pointing to: %s at 0x%" PRIx64
- ".",
- current_symbol->GetName().GetCString(),
- actual_symbol->GetName().GetCString(),
- target_addr.GetLoadAddress(target_sp.get()));
- addresses.push_back(target_addr.GetLoadAddress(target_sp.get()));
- }
- }
- }
-
- if (addresses.size() > 0) {
- // First check whether any of the addresses point to Indirect symbols,
- // and if they do, resolve them:
- std::vector<lldb::addr_t> load_addrs;
- for (Address address : addresses) {
- Symbol *symbol = address.CalculateSymbolContextSymbol();
- if (symbol && symbol->IsIndirect()) {
- Status error;
- Address symbol_address = symbol->GetAddress();
- addr_t resolved_addr = thread.GetProcess()->ResolveIndirectFunction(
- &symbol_address, error);
- if (error.Success()) {
- load_addrs.push_back(resolved_addr);
- if (log)
- log->Printf("ResolveIndirectFunction found resolved target for "
- "%s at 0x%" PRIx64 ".",
- symbol->GetName().GetCString(), resolved_addr);
- }
- } else {
- load_addrs.push_back(address.GetLoadAddress(target_sp.get()));
- }
- }
- thread_plan_sp.reset(
- new ThreadPlanRunToAddress(thread, load_addrs, stop_others));
- }
- } else {
- if (log)
- log->Printf("Could not find symbol for step through.");
- }
-
- return thread_plan_sp;
-}
-
-size_t DynamicLoaderDarwin::FindEquivalentSymbols(
- lldb_private::Symbol *original_symbol, lldb_private::ModuleList &images,
- lldb_private::SymbolContextList &equivalent_symbols) {
- const ConstString &trampoline_name = original_symbol->GetMangled().GetName(
- original_symbol->GetLanguage(), Mangled::ePreferMangled);
- if (!trampoline_name)
- return 0;
-
- size_t initial_size = equivalent_symbols.GetSize();
-
- static const char *resolver_name_regex = "(_gc|_non_gc|\\$[A-Za-z0-9\\$]+)$";
- std::string equivalent_regex_buf("^");
- equivalent_regex_buf.append(trampoline_name.GetCString());
- equivalent_regex_buf.append(resolver_name_regex);
-
- RegularExpression equivalent_name_regex(equivalent_regex_buf);
- const bool append = true;
- images.FindSymbolsMatchingRegExAndType(equivalent_name_regex, eSymbolTypeCode,
- equivalent_symbols, append);
-
- return equivalent_symbols.GetSize() - initial_size;
-}
-
-lldb::ModuleSP DynamicLoaderDarwin::GetPThreadLibraryModule() {
- ModuleSP module_sp = m_libpthread_module_wp.lock();
- if (!module_sp) {
- SymbolContextList sc_list;
- ModuleSpec module_spec;
- module_spec.GetFileSpec().GetFilename().SetCString(
- "libsystem_pthread.dylib");
- ModuleList module_list;
- if (m_process->GetTarget().GetImages().FindModules(module_spec,
- module_list)) {
- if (module_list.GetSize() == 1) {
- module_sp = module_list.GetModuleAtIndex(0);
- if (module_sp)
- m_libpthread_module_wp = module_sp;
- }
- }
- }
- return module_sp;
-}
-
-Address DynamicLoaderDarwin::GetPthreadSetSpecificAddress() {
- if (!m_pthread_getspecific_addr.IsValid()) {
- ModuleSP module_sp = GetPThreadLibraryModule();
- if (module_sp) {
- lldb_private::SymbolContextList sc_list;
- module_sp->FindSymbolsWithNameAndType(ConstString("pthread_getspecific"),
- eSymbolTypeCode, sc_list);
- SymbolContext sc;
- if (sc_list.GetContextAtIndex(0, sc)) {
- if (sc.symbol)
- m_pthread_getspecific_addr = sc.symbol->GetAddress();
- }
- }
- }
- return m_pthread_getspecific_addr;
-}
-
-lldb::addr_t
-DynamicLoaderDarwin::GetThreadLocalData(const lldb::ModuleSP module_sp,
- const lldb::ThreadSP thread_sp,
- lldb::addr_t tls_file_addr) {
- if (!thread_sp || !module_sp)
- return LLDB_INVALID_ADDRESS;
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- const uint32_t addr_size = m_process->GetAddressByteSize();
- uint8_t buf[sizeof(lldb::addr_t) * 3];
-
- lldb_private::Address tls_addr;
- if (module_sp->ResolveFileAddress(tls_file_addr, tls_addr)) {
- Status error;
- const size_t tsl_data_size = addr_size * 3;
- Target &target = m_process->GetTarget();
- if (target.ReadMemory(tls_addr, false, buf, tsl_data_size, error) ==
- tsl_data_size) {
- const ByteOrder byte_order = m_process->GetByteOrder();
- DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
- lldb::offset_t offset = addr_size; // Skip the first pointer
- const lldb::addr_t pthread_key = data.GetAddress(&offset);
- const lldb::addr_t tls_offset = data.GetAddress(&offset);
- if (pthread_key != 0) {
- // First check to see if we have already figured out the location of
- // TLS data for the pthread_key on a specific thread yet. If we have we
- // can re-use it since its location will not change unless the process
- // execs.
- const tid_t tid = thread_sp->GetID();
- auto tid_pos = m_tid_to_tls_map.find(tid);
- if (tid_pos != m_tid_to_tls_map.end()) {
- auto tls_pos = tid_pos->second.find(pthread_key);
- if (tls_pos != tid_pos->second.end()) {
- return tls_pos->second + tls_offset;
- }
- }
- StackFrameSP frame_sp = thread_sp->GetStackFrameAtIndex(0);
- if (frame_sp) {
- ClangASTContext *clang_ast_context =
- target.GetScratchClangASTContext();
-
- if (!clang_ast_context)
- return LLDB_INVALID_ADDRESS;
-
- CompilerType clang_void_ptr_type =
- clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
- Address pthread_getspecific_addr = GetPthreadSetSpecificAddress();
- if (pthread_getspecific_addr.IsValid()) {
- EvaluateExpressionOptions options;
-
- lldb::ThreadPlanSP thread_plan_sp(new ThreadPlanCallFunction(
- *thread_sp, pthread_getspecific_addr, clang_void_ptr_type,
- llvm::ArrayRef<lldb::addr_t>(pthread_key), options));
-
- DiagnosticManager execution_errors;
- ExecutionContext exe_ctx(thread_sp);
- lldb::ExpressionResults results = m_process->RunThreadPlan(
- exe_ctx, thread_plan_sp, options, execution_errors);
-
- if (results == lldb::eExpressionCompleted) {
- lldb::ValueObjectSP result_valobj_sp =
- thread_plan_sp->GetReturnValueObject();
- if (result_valobj_sp) {
- const lldb::addr_t pthread_key_data =
- result_valobj_sp->GetValueAsUnsigned(0);
- if (pthread_key_data) {
- m_tid_to_tls_map[tid].insert(
- std::make_pair(pthread_key, pthread_key_data));
- return pthread_key_data + tls_offset;
- }
- }
- }
- }
- }
- }
- }
- }
- return LLDB_INVALID_ADDRESS;
-}
-
-bool DynamicLoaderDarwin::UseDYLDSPI(Process *process) {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- bool use_new_spi_interface = false;
-
- llvm::VersionTuple version = process->GetHostOSVersion();
- if (!version.empty()) {
- const llvm::Triple::OSType os_type =
- process->GetTarget().GetArchitecture().GetTriple().getOS();
-
- // macOS 10.12 and newer
- if (os_type == llvm::Triple::MacOSX &&
- version >= llvm::VersionTuple(10, 12))
- use_new_spi_interface = true;
-
- // iOS 10 and newer
- if (os_type == llvm::Triple::IOS && version >= llvm::VersionTuple(10))
- use_new_spi_interface = true;
-
- // tvOS 10 and newer
- if (os_type == llvm::Triple::TvOS && version >= llvm::VersionTuple(10))
- use_new_spi_interface = true;
-
- // watchOS 3 and newer
- if (os_type == llvm::Triple::WatchOS && version >= llvm::VersionTuple(3))
- use_new_spi_interface = true;
-
- // NEED_BRIDGEOS_TRIPLE // Any BridgeOS
- // NEED_BRIDGEOS_TRIPLE if (os_type == llvm::Triple::BridgeOS)
- // NEED_BRIDGEOS_TRIPLE use_new_spi_interface = true;
- }
-
- if (log) {
- if (use_new_spi_interface)
- log->Printf(
- "DynamicLoaderDarwin::UseDYLDSPI: Use new DynamicLoader plugin");
- else
- log->Printf(
- "DynamicLoaderDarwin::UseDYLDSPI: Use old DynamicLoader plugin");
- }
- return use_new_spi_interface;
-}
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h
deleted file mode 100644
index 690253ba5ff2..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h
+++ /dev/null
@@ -1,241 +0,0 @@
-//===-- DynamicLoaderDarwin.h -------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef liblldb_DynamicLoaderDarwin_h_
-#define liblldb_DynamicLoaderDarwin_h_
-
-#include <map>
-#include <mutex>
-#include <vector>
-
-#include "lldb/Host/SafeMachO.h"
-#include "lldb/Target/DynamicLoader.h"
-#include "lldb/Target/Process.h"
-#include "lldb/Utility/FileSpec.h"
-#include "lldb/Utility/StructuredData.h"
-#include "lldb/Utility/UUID.h"
-
-#include "llvm/ADT/Triple.h"
-
-namespace lldb_private {
-
-class DynamicLoaderDarwin : public lldb_private::DynamicLoader {
-public:
- DynamicLoaderDarwin(lldb_private::Process *process);
-
- virtual ~DynamicLoaderDarwin() override;
-
- //------------------------------------------------------------------
- /// Called after attaching a process.
- ///
- /// Allow DynamicLoader plug-ins to execute some code after
- /// attaching to a process.
- //------------------------------------------------------------------
- void DidAttach() override;
-
- void DidLaunch() override;
-
- lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread,
- bool stop_others) override;
-
- size_t FindEquivalentSymbols(
- lldb_private::Symbol *original_symbol,
- lldb_private::ModuleList &module_list,
- lldb_private::SymbolContextList &equivalent_symbols) override;
-
- lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module,
- const lldb::ThreadSP thread,
- lldb::addr_t tls_file_addr) override;
-
- bool AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override;
-
- virtual void DoInitialImageFetch() = 0;
-
- virtual bool NeedToDoInitialImageFetch() = 0;
-
-protected:
- void PrivateInitialize(lldb_private::Process *process);
-
- void PrivateProcessStateChanged(lldb_private::Process *process,
- lldb::StateType state);
-
- void Clear(bool clear_process);
-
- // Clear method for classes derived from this one
- virtual void DoClear() = 0;
-
- void SetDYLDModule(lldb::ModuleSP &dyld_module_sp);
-
- lldb::ModuleSP GetDYLDModule();
-
- class Segment {
- public:
- Segment()
- : name(), vmaddr(LLDB_INVALID_ADDRESS), vmsize(0), fileoff(0),
- filesize(0), maxprot(0), initprot(0), nsects(0), flags(0) {}
-
- lldb_private::ConstString name;
- lldb::addr_t vmaddr;
- lldb::addr_t vmsize;
- lldb::addr_t fileoff;
- lldb::addr_t filesize;
- uint32_t maxprot;
- uint32_t initprot;
- uint32_t nsects;
- uint32_t flags;
-
- bool operator==(const Segment &rhs) const {
- return name == rhs.name && vmaddr == rhs.vmaddr && vmsize == rhs.vmsize;
- }
-
- void PutToLog(lldb_private::Log *log, lldb::addr_t slide) const;
- };
-
- struct ImageInfo {
- lldb::addr_t address; // Address of mach header for this dylib
- lldb::addr_t slide; // The amount to slide all segments by if there is a
- // global slide.
- lldb::addr_t mod_date; // Modification date for this dylib
- lldb_private::FileSpec file_spec; // Resolved path for this dylib
- lldb_private::UUID
- uuid; // UUID for this dylib if it has one, else all zeros
- llvm::MachO::mach_header header; // The mach header for this image
- std::vector<Segment> segments; // All segment vmaddr and vmsize pairs for
- // this executable (from memory of inferior)
- uint32_t load_stop_id; // The process stop ID that the sections for this
- // image were loaded
- llvm::Triple::OSType os_type; // LC_VERSION_MIN_... load command os type
- std::string min_version_os_sdk; // LC_VERSION_MIN_... sdk value
-
- ImageInfo()
- : address(LLDB_INVALID_ADDRESS), slide(0), mod_date(0), file_spec(),
- uuid(), header(), segments(), load_stop_id(0),
- os_type(llvm::Triple::OSType::UnknownOS), min_version_os_sdk() {}
-
- void Clear(bool load_cmd_data_only) {
- if (!load_cmd_data_only) {
- address = LLDB_INVALID_ADDRESS;
- slide = 0;
- mod_date = 0;
- file_spec.Clear();
- ::memset(&header, 0, sizeof(header));
- }
- uuid.Clear();
- segments.clear();
- load_stop_id = 0;
- os_type = llvm::Triple::OSType::UnknownOS;
- min_version_os_sdk.clear();
- }
-
- bool operator==(const ImageInfo &rhs) const {
- return address == rhs.address && slide == rhs.slide &&
- mod_date == rhs.mod_date && file_spec == rhs.file_spec &&
- uuid == rhs.uuid &&
- memcmp(&header, &rhs.header, sizeof(header)) == 0 &&
- segments == rhs.segments && os_type == rhs.os_type;
- }
-
- bool UUIDValid() const { return uuid.IsValid(); }
-
- uint32_t GetAddressByteSize() {
- if (header.cputype) {
- if (header.cputype & llvm::MachO::CPU_ARCH_ABI64)
- return 8;
- else
- return 4;
- }
- return 0;
- }
-
- lldb_private::ArchSpec GetArchitecture() const {
- return lldb_private::ArchSpec(lldb_private::eArchTypeMachO,
- header.cputype, header.cpusubtype);
- }
-
- const Segment *FindSegment(const lldb_private::ConstString &name) const;
-
- void PutToLog(lldb_private::Log *log) const;
-
- typedef std::vector<ImageInfo> collection;
- typedef collection::iterator iterator;
- typedef collection::const_iterator const_iterator;
- };
-
- bool UpdateImageLoadAddress(lldb_private::Module *module, ImageInfo &info);
-
- bool UnloadModuleSections(lldb_private::Module *module, ImageInfo &info);
-
- lldb::ModuleSP FindTargetModuleForImageInfo(ImageInfo &image_info,
- bool can_create,
- bool *did_create_ptr);
-
- void UnloadImages(const std::vector<lldb::addr_t> &solib_addresses);
-
- void UnloadAllImages();
-
- virtual bool SetNotificationBreakpoint() = 0;
-
- virtual void ClearNotificationBreakpoint() = 0;
-
- virtual bool DidSetNotificationBreakpoint() = 0;
-
- typedef std::map<uint64_t, lldb::addr_t> PthreadKeyToTLSMap;
- typedef std::map<lldb::user_id_t, PthreadKeyToTLSMap> ThreadIDToTLSMap;
-
- std::recursive_mutex &GetMutex() const { return m_mutex; }
-
- lldb::ModuleSP GetPThreadLibraryModule();
-
- lldb_private::Address GetPthreadSetSpecificAddress();
-
- bool JSONImageInformationIntoImageInfo(
- lldb_private::StructuredData::ObjectSP image_details,
- ImageInfo::collection &image_infos);
-
- // If image_infos contains / may contain dyld or executable image, call this
- // method
- // to keep our internal record keeping of the special binaries up-to-date.
- void
- UpdateSpecialBinariesFromNewImageInfos(ImageInfo::collection &image_infos);
-
- // if image_info is a dyld binary, call this method
- void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info);
-
- // If image_infos contains / may contain executable image, call this method
- // to keep our internal record keeping of the special dyld binary up-to-date.
- void AddExecutableModuleIfInImageInfos(ImageInfo::collection &image_infos);
-
- bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos);
-
- // Whether we should use the new dyld SPI to get shared library information,
- // or read
- // it directly out of the dyld_all_image_infos. Whether we use the (newer)
- // DynamicLoaderMacOS
- // plugin or the (older) DynamicLoaderMacOSX plugin.
- static bool UseDYLDSPI(lldb_private::Process *process);
-
- lldb::ModuleWP m_dyld_module_wp; // the dyld whose file type (mac, ios, etc)
- // matches the process
- lldb::ModuleWP m_libpthread_module_wp;
- lldb_private::Address m_pthread_getspecific_addr;
- ThreadIDToTLSMap m_tid_to_tls_map;
- ImageInfo::collection
- m_dyld_image_infos; // Current shared libraries information
- uint32_t m_dyld_image_infos_stop_id; // The process stop ID that
- // "m_dyld_image_infos" is valid for
- ImageInfo m_dyld;
- mutable std::recursive_mutex m_mutex;
-
-private:
- DISALLOW_COPY_AND_ASSIGN(DynamicLoaderDarwin);
-};
-
-} // namespace lldb_private
-
-#endif // liblldb_DynamicLoaderDarwin_h_
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
deleted file mode 100644
index 1ff0ec2c7937..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
+++ /dev/null
@@ -1,548 +0,0 @@
-//===-- DynamicLoaderMacOS.cpp -----------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "lldb/Breakpoint/StoppointCallbackContext.h"
-#include "lldb/Core/Debugger.h"
-#include "lldb/Core/Module.h"
-#include "lldb/Core/PluginManager.h"
-#include "lldb/Core/Section.h"
-#include "lldb/Symbol/ClangASTContext.h"
-#include "lldb/Symbol/ObjectFile.h"
-#include "lldb/Symbol/SymbolVendor.h"
-#include "lldb/Target/ABI.h"
-#include "lldb/Target/StackFrame.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Target/Thread.h"
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/State.h"
-
-#include "DynamicLoaderDarwin.h"
-#include "DynamicLoaderMacOS.h"
-
-using namespace lldb;
-using namespace lldb_private;
-
-//----------------------------------------------------------------------
-// Create an instance of this class. This function is filled into the plugin
-// info class that gets handed out by the plugin factory and allows the lldb to
-// instantiate an instance of this class.
-//----------------------------------------------------------------------
-DynamicLoader *DynamicLoaderMacOS::CreateInstance(Process *process,
- bool force) {
- bool create = force;
- if (!create) {
- create = true;
- Module *exe_module = process->GetTarget().GetExecutableModulePointer();
- if (exe_module) {
- ObjectFile *object_file = exe_module->GetObjectFile();
- if (object_file) {
- create = (object_file->GetStrata() == ObjectFile::eStrataUser);
- }
- }
-
- if (create) {
- const llvm::Triple &triple_ref =
- process->GetTarget().GetArchitecture().GetTriple();
- switch (triple_ref.getOS()) {
- case llvm::Triple::Darwin:
- case llvm::Triple::MacOSX:
- case llvm::Triple::IOS:
- case llvm::Triple::TvOS:
- case llvm::Triple::WatchOS:
- // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
- create = triple_ref.getVendor() == llvm::Triple::Apple;
- break;
- default:
- create = false;
- break;
- }
- }
- }
-
- if (!UseDYLDSPI(process)) {
- create = false;
- }
-
- if (create)
- return new DynamicLoaderMacOS(process);
- return NULL;
-}
-
-//----------------------------------------------------------------------
-// Constructor
-//----------------------------------------------------------------------
-DynamicLoaderMacOS::DynamicLoaderMacOS(Process *process)
- : DynamicLoaderDarwin(process), m_image_infos_stop_id(UINT32_MAX),
- m_break_id(LLDB_INVALID_BREAK_ID), m_mutex(),
- m_maybe_image_infos_address(LLDB_INVALID_ADDRESS) {}
-
-//----------------------------------------------------------------------
-// Destructor
-//----------------------------------------------------------------------
-DynamicLoaderMacOS::~DynamicLoaderMacOS() {
- if (LLDB_BREAK_ID_IS_VALID(m_break_id))
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
-}
-
-bool DynamicLoaderMacOS::ProcessDidExec() {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- bool did_exec = false;
- if (m_process) {
- // If we are stopped after an exec, we will have only one thread...
- if (m_process->GetThreadList().GetSize() == 1) {
- // Maybe we still have an image infos address around? If so see
- // if that has changed, and if so we have exec'ed.
- if (m_maybe_image_infos_address != LLDB_INVALID_ADDRESS) {
- lldb::addr_t image_infos_address = m_process->GetImageInfoAddress();
- if (image_infos_address != m_maybe_image_infos_address) {
- // We don't really have to reset this here, since we are going to
- // call DoInitialImageFetch right away to handle the exec. But in
- // case anybody looks at it in the meantime, it can't hurt.
- m_maybe_image_infos_address = image_infos_address;
- did_exec = true;
- }
- }
-
- if (!did_exec) {
- // See if we are stopped at '_dyld_start'
- ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0));
- if (thread_sp) {
- lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0));
- if (frame_sp) {
- const Symbol *symbol =
- frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol;
- if (symbol) {
- if (symbol->GetName() == ConstString("_dyld_start"))
- did_exec = true;
- }
- }
- }
- }
- }
- }
-
- if (did_exec) {
- m_libpthread_module_wp.reset();
- m_pthread_getspecific_addr.Clear();
- }
- return did_exec;
-}
-
-//----------------------------------------------------------------------
-// Clear out the state of this class.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOS::DoClear() {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- if (LLDB_BREAK_ID_IS_VALID(m_break_id))
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
-
- m_break_id = LLDB_INVALID_BREAK_ID;
-}
-
-//----------------------------------------------------------------------
-// Check if we have found DYLD yet
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOS::DidSetNotificationBreakpoint() {
- return LLDB_BREAK_ID_IS_VALID(m_break_id);
-}
-
-void DynamicLoaderMacOS::ClearNotificationBreakpoint() {
- if (LLDB_BREAK_ID_IS_VALID(m_break_id)) {
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
- m_break_id = LLDB_INVALID_BREAK_ID;
- }
-}
-
-//----------------------------------------------------------------------
-// Try and figure out where dyld is by first asking the Process if it knows
-// (which currently calls down in the lldb::Process to get the DYLD info
-// (available on SnowLeopard only). If that fails, then check in the default
-// addresses.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOS::DoInitialImageFetch() {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
-
- // Remove any binaries we pre-loaded in the Target before
- // launching/attaching. If the same binaries are present in the process,
- // we'll get them from the shared module cache, we won't need to re-load them
- // from disk.
- UnloadAllImages();
-
- StructuredData::ObjectSP all_image_info_json_sp(
- m_process->GetLoadedDynamicLibrariesInfos());
- ImageInfo::collection image_infos;
- if (all_image_info_json_sp.get() &&
- all_image_info_json_sp->GetAsDictionary() &&
- all_image_info_json_sp->GetAsDictionary()->HasKey("images") &&
- all_image_info_json_sp->GetAsDictionary()
- ->GetValueForKey("images")
- ->GetAsArray()) {
- if (JSONImageInformationIntoImageInfo(all_image_info_json_sp,
- image_infos)) {
- if (log)
- log->Printf("Initial module fetch: Adding %" PRId64 " modules.\n",
- (uint64_t)image_infos.size());
-
- UpdateSpecialBinariesFromNewImageInfos(image_infos);
- AddModulesUsingImageInfos(image_infos);
- }
- }
-
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- m_maybe_image_infos_address = m_process->GetImageInfoAddress();
-}
-
-bool DynamicLoaderMacOS::NeedToDoInitialImageFetch() { return true; }
-
-//----------------------------------------------------------------------
-// Static callback function that gets called when our DYLD notification
-// breakpoint gets hit. We update all of our image infos and then let our super
-// class DynamicLoader class decide if we should stop or not (based on global
-// preference).
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOS::NotifyBreakpointHit(void *baton,
- StoppointCallbackContext *context,
- lldb::user_id_t break_id,
- lldb::user_id_t break_loc_id) {
- // Let the event know that the images have changed
- // DYLD passes three arguments to the notification breakpoint.
- // Arg1: enum dyld_notify_mode mode - 0 = adding, 1 = removing, 2 = remove
- // all Arg2: unsigned long icount - Number of shared libraries
- // added/removed Arg3: uint64_t mach_headers[] - Array of load addresses
- // of binaries added/removed
-
- DynamicLoaderMacOS *dyld_instance = (DynamicLoaderMacOS *)baton;
-
- ExecutionContext exe_ctx(context->exe_ctx_ref);
- Process *process = exe_ctx.GetProcessPtr();
-
- // This is a sanity check just in case this dyld_instance is an old dyld
- // plugin's breakpoint still lying around.
- if (process != dyld_instance->m_process)
- return false;
-
- if (dyld_instance->m_image_infos_stop_id != UINT32_MAX &&
- process->GetStopID() < dyld_instance->m_image_infos_stop_id) {
- return false;
- }
-
- const lldb::ABISP &abi = process->GetABI();
- if (abi) {
- // Build up the value array to store the three arguments given above, then
- // get the values from the ABI:
-
- ClangASTContext *clang_ast_context =
- process->GetTarget().GetScratchClangASTContext();
- ValueList argument_values;
-
- Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0,
- // dyld_notify_removing=1, dyld_notify_remove_all=2 };
- Value count_value; // unsigned long count
- Value headers_value; // uint64_t machHeaders[] (aka void*)
-
- CompilerType clang_void_ptr_type =
- clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
- CompilerType clang_uint32_type =
- clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(
- lldb::eEncodingUint, 32);
- CompilerType clang_uint64_type =
- clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(
- lldb::eEncodingUint, 32);
-
- mode_value.SetValueType(Value::eValueTypeScalar);
- mode_value.SetCompilerType(clang_uint32_type);
-
- if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 4) {
- count_value.SetValueType(Value::eValueTypeScalar);
- count_value.SetCompilerType(clang_uint32_type);
- } else {
- count_value.SetValueType(Value::eValueTypeScalar);
- count_value.SetCompilerType(clang_uint64_type);
- }
-
- headers_value.SetValueType(Value::eValueTypeScalar);
- headers_value.SetCompilerType(clang_void_ptr_type);
-
- argument_values.PushValue(mode_value);
- argument_values.PushValue(count_value);
- argument_values.PushValue(headers_value);
-
- if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) {
- uint32_t dyld_mode =
- argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1);
- if (dyld_mode != static_cast<uint32_t>(-1)) {
- // Okay the mode was right, now get the number of elements, and the
- // array of new elements...
- uint32_t image_infos_count =
- argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1);
- if (image_infos_count != static_cast<uint32_t>(-1)) {
- addr_t header_array =
- argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1);
- if (header_array != static_cast<uint64_t>(-1)) {
- std::vector<addr_t> image_load_addresses;
- for (uint64_t i = 0; i < image_infos_count; i++) {
- Status error;
- addr_t addr = process->ReadUnsignedIntegerFromMemory(
- header_array + (8 * i), 8, LLDB_INVALID_ADDRESS, error);
- if (addr != LLDB_INVALID_ADDRESS) {
- image_load_addresses.push_back(addr);
- }
- }
- if (dyld_mode == 0) {
- // dyld_notify_adding
- dyld_instance->AddBinaries(image_load_addresses);
- } else if (dyld_mode == 1) {
- // dyld_notify_removing
- dyld_instance->UnloadImages(image_load_addresses);
- } else if (dyld_mode == 2) {
- // dyld_notify_remove_all
- dyld_instance->UnloadAllImages();
- }
- }
- }
- }
- }
- } else {
- process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf(
- "No ABI plugin located for triple %s -- shared libraries will not be "
- "registered!\n",
- process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str());
- }
-
- // Return true to stop the target, false to just let the target run
- return dyld_instance->GetStopWhenImagesChange();
-}
-
-void DynamicLoaderMacOS::AddBinaries(
- const std::vector<lldb::addr_t> &load_addresses) {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- ImageInfo::collection image_infos;
-
- if (log)
- log->Printf("Adding %" PRId64 " modules.", (uint64_t)load_addresses.size());
- StructuredData::ObjectSP binaries_info_sp =
- m_process->GetLoadedDynamicLibrariesInfos(load_addresses);
- if (binaries_info_sp.get() && binaries_info_sp->GetAsDictionary() &&
- binaries_info_sp->GetAsDictionary()->HasKey("images") &&
- binaries_info_sp->GetAsDictionary()
- ->GetValueForKey("images")
- ->GetAsArray() &&
- binaries_info_sp->GetAsDictionary()
- ->GetValueForKey("images")
- ->GetAsArray()
- ->GetSize() == load_addresses.size()) {
- if (JSONImageInformationIntoImageInfo(binaries_info_sp, image_infos)) {
- UpdateSpecialBinariesFromNewImageInfos(image_infos);
- AddModulesUsingImageInfos(image_infos);
- }
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- }
-}
-
-// Dump the _dyld_all_image_infos members and all current image infos that we
-// have parsed to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOS::PutToLog(Log *log) const {
- if (log == NULL)
- return;
-}
-
-bool DynamicLoaderMacOS::SetNotificationBreakpoint() {
- if (m_break_id == LLDB_INVALID_BREAK_ID) {
- ConstString g_symbol_name("_dyld_debugger_notification");
- const Symbol *symbol = nullptr;
- ModuleSP dyld_sp(GetDYLDModule());
- if (dyld_sp) {
- symbol = dyld_sp->FindFirstSymbolWithNameAndType(g_symbol_name,
- eSymbolTypeCode);
- }
- if (symbol &&
- (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) {
- addr_t symbol_address =
- symbol->GetAddressRef().GetOpcodeLoadAddress(&m_process->GetTarget());
- if (symbol_address != LLDB_INVALID_ADDRESS) {
- bool internal = true;
- bool hardware = false;
- Breakpoint *breakpoint =
- m_process->GetTarget()
- .CreateBreakpoint(symbol_address, internal, hardware)
- .get();
- breakpoint->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this,
- true);
- breakpoint->SetBreakpointKind("shared-library-event");
- m_break_id = breakpoint->GetID();
- }
- }
- }
- return m_break_id != LLDB_INVALID_BREAK_ID;
-}
-
-addr_t
-DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule(Module *module) {
- SymbolContext sc;
- SymbolVendor *sym_vendor = module->GetSymbolVendor();
- Target &target = m_process->GetTarget();
- if (sym_vendor) {
- Symtab *symtab = sym_vendor->GetSymtab();
- if (symtab) {
- std::vector<uint32_t> match_indexes;
- ConstString g_symbol_name("_dyld_global_lock_held");
- uint32_t num_matches = 0;
- num_matches =
- symtab->AppendSymbolIndexesWithName(g_symbol_name, match_indexes);
- if (num_matches == 1) {
- Symbol *symbol = symtab->SymbolAtIndex(match_indexes[0]);
- if (symbol &&
- (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) {
- return symbol->GetAddressRef().GetOpcodeLoadAddress(&target);
- }
- }
- }
- }
- return LLDB_INVALID_ADDRESS;
-}
-
-// Look for this symbol:
-//
-// int __attribute__((visibility("hidden"))) _dyld_global_lock_held =
-// 0;
-//
-// in libdyld.dylib.
-Status DynamicLoaderMacOS::CanLoadImage() {
- Status error;
- addr_t symbol_address = LLDB_INVALID_ADDRESS;
- Target &target = m_process->GetTarget();
- const ModuleList &target_modules = target.GetImages();
- std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex());
- const size_t num_modules = target_modules.GetSize();
- ConstString g_libdyld_name("libdyld.dylib");
-
- // Find any modules named "libdyld.dylib" and look for the symbol there first
- for (size_t i = 0; i < num_modules; i++) {
- Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked(i);
- if (module_pointer) {
- if (module_pointer->GetFileSpec().GetFilename() == g_libdyld_name) {
- symbol_address = GetDyldLockVariableAddressFromModule(module_pointer);
- if (symbol_address != LLDB_INVALID_ADDRESS)
- break;
- }
- }
- }
-
- // Search through all modules looking for the symbol in them
- if (symbol_address == LLDB_INVALID_ADDRESS) {
- for (size_t i = 0; i < num_modules; i++) {
- Module *module_pointer =
- target_modules.GetModulePointerAtIndexUnlocked(i);
- if (module_pointer) {
- addr_t symbol_address =
- GetDyldLockVariableAddressFromModule(module_pointer);
- if (symbol_address != LLDB_INVALID_ADDRESS)
- break;
- }
- }
- }
-
- // Default assumption is that it is OK to load images. Only say that we
- // cannot load images if we find the symbol in libdyld and it indicates that
- // we cannot.
-
- if (symbol_address != LLDB_INVALID_ADDRESS) {
- {
- int lock_held =
- m_process->ReadUnsignedIntegerFromMemory(symbol_address, 4, 0, error);
- if (lock_held != 0) {
- error.SetErrorString("dyld lock held - unsafe to load images.");
- }
- }
- } else {
- // If we were unable to find _dyld_global_lock_held in any modules, or it
- // is not loaded into memory yet, we may be at process startup (sitting at
- // _dyld_start) - so we should not allow dlopen calls. But if we found more
- // than one module then we are clearly past _dyld_start so in that case
- // we'll default to "it's safe".
- if (num_modules <= 1)
- error.SetErrorString("could not find the dyld library or "
- "the dyld lock symbol");
- }
- return error;
-}
-
-bool DynamicLoaderMacOS::GetSharedCacheInformation(
- lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache,
- LazyBool &private_shared_cache) {
- base_address = LLDB_INVALID_ADDRESS;
- uuid.Clear();
- using_shared_cache = eLazyBoolCalculate;
- private_shared_cache = eLazyBoolCalculate;
-
- if (m_process) {
- StructuredData::ObjectSP info = m_process->GetSharedCacheInfo();
- StructuredData::Dictionary *info_dict = nullptr;
- if (info.get() && info->GetAsDictionary()) {
- info_dict = info->GetAsDictionary();
- }
-
- // {"shared_cache_base_address":140735683125248,"shared_cache_uuid
- // ":"DDB8D70C-
- // C9A2-3561-B2C8-BE48A4F33F96","no_shared_cache":false,"shared_cache_private_cache":false}
-
- if (info_dict && info_dict->HasKey("shared_cache_uuid") &&
- info_dict->HasKey("no_shared_cache") &&
- info_dict->HasKey("shared_cache_base_address")) {
- base_address = info_dict->GetValueForKey("shared_cache_base_address")
- ->GetIntegerValue(LLDB_INVALID_ADDRESS);
- std::string uuid_str =
- info_dict->GetValueForKey("shared_cache_uuid")->GetStringValue();
- if (!uuid_str.empty())
- uuid.SetFromStringRef(uuid_str);
- if (!info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue())
- using_shared_cache = eLazyBoolYes;
- else
- using_shared_cache = eLazyBoolNo;
- if (info_dict->GetValueForKey("shared_cache_private_cache")
- ->GetBooleanValue())
- private_shared_cache = eLazyBoolYes;
- else
- private_shared_cache = eLazyBoolNo;
-
- return true;
- }
- }
- return false;
-}
-
-void DynamicLoaderMacOS::Initialize() {
- PluginManager::RegisterPlugin(GetPluginNameStatic(),
- GetPluginDescriptionStatic(), CreateInstance);
-}
-
-void DynamicLoaderMacOS::Terminate() {
- PluginManager::UnregisterPlugin(CreateInstance);
-}
-
-lldb_private::ConstString DynamicLoaderMacOS::GetPluginNameStatic() {
- static ConstString g_name("macos-dyld");
- return g_name;
-}
-
-const char *DynamicLoaderMacOS::GetPluginDescriptionStatic() {
- return "Dynamic loader plug-in that watches for shared library loads/unloads "
- "in MacOSX user processes.";
-}
-
-//------------------------------------------------------------------
-// PluginInterface protocol
-//------------------------------------------------------------------
-lldb_private::ConstString DynamicLoaderMacOS::GetPluginName() {
- return GetPluginNameStatic();
-}
-
-uint32_t DynamicLoaderMacOS::GetPluginVersion() { return 1; }
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h
deleted file mode 100644
index 6303c066511c..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h
+++ /dev/null
@@ -1,118 +0,0 @@
-//===-- DynamicLoaderMacOS.h -------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS /
-// watchOS / BridgeOS)
-// platforms late 2016 and newer, where lldb will call dyld SPI functions to get
-// information about shared libraries, information about the shared cache, and
-// the _dyld_debugger_notification function we put a breakpoint on give us an
-// array of load addresses for solibs loaded and unloaded. The SPI will tell us
-// about both dyld and the executable, in addition to all of the usual solibs.
-
-#ifndef liblldb_DynamicLoaderMacOS_h_
-#define liblldb_DynamicLoaderMacOS_h_
-
-#include <mutex>
-#include <vector>
-
-#include "lldb/Target/DynamicLoader.h"
-#include "lldb/Target/Process.h"
-#include "lldb/Utility/FileSpec.h"
-#include "lldb/Utility/StructuredData.h"
-#include "lldb/Utility/UUID.h"
-
-#include "DynamicLoaderDarwin.h"
-
-class DynamicLoaderMacOS : public lldb_private::DynamicLoaderDarwin {
-public:
- DynamicLoaderMacOS(lldb_private::Process *process);
-
- virtual ~DynamicLoaderMacOS() override;
-
- //------------------------------------------------------------------
- // Static Functions
- //------------------------------------------------------------------
- static void Initialize();
-
- static void Terminate();
-
- static lldb_private::ConstString GetPluginNameStatic();
-
- static const char *GetPluginDescriptionStatic();
-
- static lldb_private::DynamicLoader *
- CreateInstance(lldb_private::Process *process, bool force);
-
- //------------------------------------------------------------------
- /// Called after attaching a process.
- ///
- /// Allow DynamicLoader plug-ins to execute some code after
- /// attaching to a process.
- //------------------------------------------------------------------
- bool ProcessDidExec() override;
-
- lldb_private::Status CanLoadImage() override;
-
- bool GetSharedCacheInformation(
- lldb::addr_t &base_address, lldb_private::UUID &uuid,
- lldb_private::LazyBool &using_shared_cache,
- lldb_private::LazyBool &private_shared_cache) override;
-
- //------------------------------------------------------------------
- // PluginInterface protocol
- //------------------------------------------------------------------
- lldb_private::ConstString GetPluginName() override;
-
- uint32_t GetPluginVersion() override;
-
-protected:
- void PutToLog(lldb_private::Log *log) const;
-
- void DoInitialImageFetch() override;
-
- bool NeedToDoInitialImageFetch() override;
-
- bool DidSetNotificationBreakpoint() override;
-
- void AddBinaries(const std::vector<lldb::addr_t> &load_addresses);
-
- void DoClear() override;
-
- static bool
- NotifyBreakpointHit(void *baton,
- lldb_private::StoppointCallbackContext *context,
- lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
-
- bool SetNotificationBreakpoint() override;
-
- void ClearNotificationBreakpoint() override;
-
- void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos,
- uint32_t infos_count,
- bool update_executable);
-
- lldb::addr_t
- GetDyldLockVariableAddressFromModule(lldb_private::Module *module);
-
- uint32_t m_image_infos_stop_id; // The Stop ID the last time we
- // loaded/unloaded images
- lldb::user_id_t m_break_id;
- mutable std::recursive_mutex m_mutex;
- lldb::addr_t m_maybe_image_infos_address; // If dyld is still maintaining the
- // all_image_infos address, store it
- // here so we can use it to detect
- // exec's when talking to
- // debugservers that don't support
- // the "reason:exec" annotation.
-
-private:
- DISALLOW_COPY_AND_ASSIGN(DynamicLoaderMacOS);
-};
-
-#endif // liblldb_DynamicLoaderMacOS_h_
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
deleted file mode 100644
index ec459a783f94..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
+++ /dev/null
@@ -1,1207 +0,0 @@
-//===-- DynamicLoaderMacOSXDYLD.cpp -----------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "lldb/Breakpoint/StoppointCallbackContext.h"
-#include "lldb/Core/Debugger.h"
-#include "lldb/Core/Module.h"
-#include "lldb/Core/ModuleSpec.h"
-#include "lldb/Core/PluginManager.h"
-#include "lldb/Core/Section.h"
-#include "lldb/Symbol/ClangASTContext.h"
-#include "lldb/Symbol/Function.h"
-#include "lldb/Symbol/ObjectFile.h"
-#include "lldb/Target/ABI.h"
-#include "lldb/Target/ObjCLanguageRuntime.h"
-#include "lldb/Target/RegisterContext.h"
-#include "lldb/Target/StackFrame.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Target/Thread.h"
-#include "lldb/Target/ThreadPlanRunToAddress.h"
-#include "lldb/Utility/DataBuffer.h"
-#include "lldb/Utility/DataBufferHeap.h"
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/State.h"
-
-#include "DynamicLoaderDarwin.h"
-#include "DynamicLoaderMacOSXDYLD.h"
-
-//#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
-#ifdef ENABLE_DEBUG_PRINTF
-#include <stdio.h>
-#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
-#else
-#define DEBUG_PRINTF(fmt, ...)
-#endif
-
-#ifndef __APPLE__
-#include "Utility/UuidCompatibility.h"
-#else
-#include <uuid/uuid.h>
-#endif
-
-using namespace lldb;
-using namespace lldb_private;
-
-//----------------------------------------------------------------------
-// Create an instance of this class. This function is filled into the plugin
-// info class that gets handed out by the plugin factory and allows the lldb to
-// instantiate an instance of this class.
-//----------------------------------------------------------------------
-DynamicLoader *DynamicLoaderMacOSXDYLD::CreateInstance(Process *process,
- bool force) {
- bool create = force;
- if (!create) {
- create = true;
- Module *exe_module = process->GetTarget().GetExecutableModulePointer();
- if (exe_module) {
- ObjectFile *object_file = exe_module->GetObjectFile();
- if (object_file) {
- create = (object_file->GetStrata() == ObjectFile::eStrataUser);
- }
- }
-
- if (create) {
- const llvm::Triple &triple_ref =
- process->GetTarget().GetArchitecture().GetTriple();
- switch (triple_ref.getOS()) {
- case llvm::Triple::Darwin:
- case llvm::Triple::MacOSX:
- case llvm::Triple::IOS:
- case llvm::Triple::TvOS:
- case llvm::Triple::WatchOS:
- // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
- create = triple_ref.getVendor() == llvm::Triple::Apple;
- break;
- default:
- create = false;
- break;
- }
- }
- }
-
- if (UseDYLDSPI(process)) {
- create = false;
- }
-
- if (create)
- return new DynamicLoaderMacOSXDYLD(process);
- return NULL;
-}
-
-//----------------------------------------------------------------------
-// Constructor
-//----------------------------------------------------------------------
-DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD(Process *process)
- : DynamicLoaderDarwin(process),
- m_dyld_all_image_infos_addr(LLDB_INVALID_ADDRESS),
- m_dyld_all_image_infos(), m_dyld_all_image_infos_stop_id(UINT32_MAX),
- m_break_id(LLDB_INVALID_BREAK_ID), m_mutex(),
- m_process_image_addr_is_all_images_infos(false) {}
-
-//----------------------------------------------------------------------
-// Destructor
-//----------------------------------------------------------------------
-DynamicLoaderMacOSXDYLD::~DynamicLoaderMacOSXDYLD() {
- if (LLDB_BREAK_ID_IS_VALID(m_break_id))
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
-}
-
-bool DynamicLoaderMacOSXDYLD::ProcessDidExec() {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- bool did_exec = false;
- if (m_process) {
- // If we are stopped after an exec, we will have only one thread...
- if (m_process->GetThreadList().GetSize() == 1) {
- // We know if a process has exec'ed if our "m_dyld_all_image_infos_addr"
- // value differs from the Process' image info address. When a process
- // execs itself it might cause a change if ASLR is enabled.
- const addr_t shlib_addr = m_process->GetImageInfoAddress();
- if (m_process_image_addr_is_all_images_infos &&
- shlib_addr != m_dyld_all_image_infos_addr) {
- // The image info address from the process is the
- // 'dyld_all_image_infos' address and it has changed.
- did_exec = true;
- } else if (!m_process_image_addr_is_all_images_infos &&
- shlib_addr == m_dyld.address) {
- // The image info address from the process is the mach_header address
- // for dyld and it has changed.
- did_exec = true;
- } else {
- // ASLR might be disabled and dyld could have ended up in the same
- // location. We should try and detect if we are stopped at
- // '_dyld_start'
- ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0));
- if (thread_sp) {
- lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0));
- if (frame_sp) {
- const Symbol *symbol =
- frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol;
- if (symbol) {
- if (symbol->GetName() == ConstString("_dyld_start"))
- did_exec = true;
- }
- }
- }
- }
-
- if (did_exec) {
- m_libpthread_module_wp.reset();
- m_pthread_getspecific_addr.Clear();
- }
- }
- }
- return did_exec;
-}
-
-//----------------------------------------------------------------------
-// Clear out the state of this class.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOSXDYLD::DoClear() {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- if (LLDB_BREAK_ID_IS_VALID(m_break_id))
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
-
- m_dyld_all_image_infos_addr = LLDB_INVALID_ADDRESS;
- m_dyld_all_image_infos.Clear();
- m_break_id = LLDB_INVALID_BREAK_ID;
-}
-
-//----------------------------------------------------------------------
-// Check if we have found DYLD yet
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOSXDYLD::DidSetNotificationBreakpoint() {
- return LLDB_BREAK_ID_IS_VALID(m_break_id);
-}
-
-void DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint() {
- if (LLDB_BREAK_ID_IS_VALID(m_break_id)) {
- m_process->GetTarget().RemoveBreakpointByID(m_break_id);
- }
-}
-
-//----------------------------------------------------------------------
-// Try and figure out where dyld is by first asking the Process if it knows
-// (which currently calls down in the lldb::Process to get the DYLD info
-// (available on SnowLeopard only). If that fails, then check in the default
-// addresses.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOSXDYLD::DoInitialImageFetch() {
- if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS) {
- // Check the image info addr as it might point to the mach header for dyld,
- // or it might point to the dyld_all_image_infos struct
- const addr_t shlib_addr = m_process->GetImageInfoAddress();
- if (shlib_addr != LLDB_INVALID_ADDRESS) {
- ByteOrder byte_order =
- m_process->GetTarget().GetArchitecture().GetByteOrder();
- uint8_t buf[4];
- DataExtractor data(buf, sizeof(buf), byte_order, 4);
- Status error;
- if (m_process->ReadMemory(shlib_addr, buf, 4, error) == 4) {
- lldb::offset_t offset = 0;
- uint32_t magic = data.GetU32(&offset);
- switch (magic) {
- case llvm::MachO::MH_MAGIC:
- case llvm::MachO::MH_MAGIC_64:
- case llvm::MachO::MH_CIGAM:
- case llvm::MachO::MH_CIGAM_64:
- m_process_image_addr_is_all_images_infos = false;
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(shlib_addr);
- return;
-
- default:
- break;
- }
- }
- // Maybe it points to the all image infos?
- m_dyld_all_image_infos_addr = shlib_addr;
- m_process_image_addr_is_all_images_infos = true;
- }
- }
-
- if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) {
- if (ReadAllImageInfosStructure()) {
- if (m_dyld_all_image_infos.dyldImageLoadAddress != LLDB_INVALID_ADDRESS)
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(
- m_dyld_all_image_infos.dyldImageLoadAddress);
- else
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(
- m_dyld_all_image_infos_addr & 0xfffffffffff00000ull);
- return;
- }
- }
-
- // Check some default values
- Module *executable = m_process->GetTarget().GetExecutableModulePointer();
-
- if (executable) {
- const ArchSpec &exe_arch = executable->GetArchitecture();
- if (exe_arch.GetAddressByteSize() == 8) {
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x7fff5fc00000ull);
- } else if (exe_arch.GetMachine() == llvm::Triple::arm ||
- exe_arch.GetMachine() == llvm::Triple::thumb ||
- exe_arch.GetMachine() == llvm::Triple::aarch64) {
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x2fe00000);
- } else {
- ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x8fe00000);
- }
- }
- return;
-}
-
-//----------------------------------------------------------------------
-// Assume that dyld is in memory at ADDR and try to parse it's load commands
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback(
- lldb::addr_t addr) {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- DataExtractor data; // Load command data
- static ConstString g_dyld_all_image_infos("dyld_all_image_infos");
- if (ReadMachHeader(addr, &m_dyld.header, &data)) {
- if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) {
- m_dyld.address = addr;
- ModuleSP dyld_module_sp;
- if (ParseLoadCommands(data, m_dyld, &m_dyld.file_spec)) {
- if (m_dyld.file_spec) {
- UpdateDYLDImageInfoFromNewImageInfo(m_dyld);
- }
- }
- dyld_module_sp = GetDYLDModule();
-
- Target &target = m_process->GetTarget();
-
- if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS &&
- dyld_module_sp.get()) {
- const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
- g_dyld_all_image_infos, eSymbolTypeData);
- if (symbol)
- m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target);
- }
-
- // Update all image infos
- InitializeFromAllImageInfos();
-
- // If we didn't have an executable before, but now we do, then the dyld
- // module shared pointer might be unique and we may need to add it again
- // (since Target::SetExecutableModule() will clear the images). So append
- // the dyld module back to the list if it is
- /// unique!
- if (dyld_module_sp) {
- target.GetImages().AppendIfNeeded(dyld_module_sp);
-
- // At this point we should have read in dyld's module, and so we should
- // set breakpoints in it:
- ModuleList modules;
- modules.Append(dyld_module_sp);
- target.ModulesDidLoad(modules);
- SetDYLDModule(dyld_module_sp);
- }
-
- return true;
- }
- }
- return false;
-}
-
-bool DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch() {
- return m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS;
-}
-
-//----------------------------------------------------------------------
-// Static callback function that gets called when our DYLD notification
-// breakpoint gets hit. We update all of our image infos and then let our super
-// class DynamicLoader class decide if we should stop or not (based on global
-// preference).
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOSXDYLD::NotifyBreakpointHit(
- void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id,
- lldb::user_id_t break_loc_id) {
- // Let the event know that the images have changed
- // DYLD passes three arguments to the notification breakpoint.
- // Arg1: enum dyld_image_mode mode - 0 = adding, 1 = removing Arg2: uint32_t
- // infoCount - Number of shared libraries added Arg3: dyld_image_info
- // info[] - Array of structs of the form:
- // const struct mach_header
- // *imageLoadAddress
- // const char *imageFilePath
- // uintptr_t imageFileModDate (a time_t)
-
- DynamicLoaderMacOSXDYLD *dyld_instance = (DynamicLoaderMacOSXDYLD *)baton;
-
- // First step is to see if we've already initialized the all image infos. If
- // we haven't then this function will do so and return true. In the course
- // of initializing the all_image_infos it will read the complete current
- // state, so we don't need to figure out what has changed from the data
- // passed in to us.
-
- ExecutionContext exe_ctx(context->exe_ctx_ref);
- Process *process = exe_ctx.GetProcessPtr();
-
- // This is a sanity check just in case this dyld_instance is an old dyld
- // plugin's breakpoint still lying around.
- if (process != dyld_instance->m_process)
- return false;
-
- if (dyld_instance->InitializeFromAllImageInfos())
- return dyld_instance->GetStopWhenImagesChange();
-
- const lldb::ABISP &abi = process->GetABI();
- if (abi) {
- // Build up the value array to store the three arguments given above, then
- // get the values from the ABI:
-
- ClangASTContext *clang_ast_context =
- process->GetTarget().GetScratchClangASTContext();
- ValueList argument_values;
- Value input_value;
-
- CompilerType clang_void_ptr_type =
- clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
- CompilerType clang_uint32_type =
- clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(
- lldb::eEncodingUint, 32);
- input_value.SetValueType(Value::eValueTypeScalar);
- input_value.SetCompilerType(clang_uint32_type);
- // input_value.SetContext (Value::eContextTypeClangType,
- // clang_uint32_type);
- argument_values.PushValue(input_value);
- argument_values.PushValue(input_value);
- input_value.SetCompilerType(clang_void_ptr_type);
- // input_value.SetContext (Value::eContextTypeClangType,
- // clang_void_ptr_type);
- argument_values.PushValue(input_value);
-
- if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) {
- uint32_t dyld_mode =
- argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1);
- if (dyld_mode != static_cast<uint32_t>(-1)) {
- // Okay the mode was right, now get the number of elements, and the
- // array of new elements...
- uint32_t image_infos_count =
- argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1);
- if (image_infos_count != static_cast<uint32_t>(-1)) {
- // Got the number added, now go through the array of added elements,
- // putting out the mach header address, and adding the image. Note,
- // I'm not putting in logging here, since the AddModules &
- // RemoveModules functions do all the logging internally.
-
- lldb::addr_t image_infos_addr =
- argument_values.GetValueAtIndex(2)->GetScalar().ULongLong();
- if (dyld_mode == 0) {
- // This is add:
- dyld_instance->AddModulesUsingImageInfosAddress(image_infos_addr,
- image_infos_count);
- } else {
- // This is remove:
- dyld_instance->RemoveModulesUsingImageInfosAddress(
- image_infos_addr, image_infos_count);
- }
- }
- }
- }
- } else {
- process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf(
- "No ABI plugin located for triple %s -- shared libraries will not be "
- "registered!\n",
- process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str());
- }
-
- // Return true to stop the target, false to just let the target run
- return dyld_instance->GetStopWhenImagesChange();
-}
-
-bool DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure() {
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
-
- // the all image infos is already valid for this process stop ID
- if (m_process->GetStopID() == m_dyld_all_image_infos_stop_id)
- return true;
-
- m_dyld_all_image_infos.Clear();
- if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) {
- ByteOrder byte_order =
- m_process->GetTarget().GetArchitecture().GetByteOrder();
- uint32_t addr_size =
- m_process->GetTarget().GetArchitecture().GetAddressByteSize();
-
- uint8_t buf[256];
- DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
- lldb::offset_t offset = 0;
-
- const size_t count_v2 = sizeof(uint32_t) + // version
- sizeof(uint32_t) + // infoArrayCount
- addr_size + // infoArray
- addr_size + // notification
- addr_size + // processDetachedFromSharedRegion +
- // libSystemInitialized + pad
- addr_size; // dyldImageLoadAddress
- const size_t count_v11 = count_v2 + addr_size + // jitInfo
- addr_size + // dyldVersion
- addr_size + // errorMessage
- addr_size + // terminationFlags
- addr_size + // coreSymbolicationShmPage
- addr_size + // systemOrderFlag
- addr_size + // uuidArrayCount
- addr_size + // uuidArray
- addr_size + // dyldAllImageInfosAddress
- addr_size + // initialImageCount
- addr_size + // errorKind
- addr_size + // errorClientOfDylibPath
- addr_size + // errorTargetDylibPath
- addr_size; // errorSymbol
- const size_t count_v13 = count_v11 + addr_size + // sharedCacheSlide
- sizeof(uuid_t); // sharedCacheUUID
- UNUSED_IF_ASSERT_DISABLED(count_v13);
- assert(sizeof(buf) >= count_v13);
-
- Status error;
- if (m_process->ReadMemory(m_dyld_all_image_infos_addr, buf, 4, error) ==
- 4) {
- m_dyld_all_image_infos.version = data.GetU32(&offset);
- // If anything in the high byte is set, we probably got the byte order
- // incorrect (the process might not have it set correctly yet due to
- // attaching to a program without a specified file).
- if (m_dyld_all_image_infos.version & 0xff000000) {
- // We have guessed the wrong byte order. Swap it and try reading the
- // version again.
- if (byte_order == eByteOrderLittle)
- byte_order = eByteOrderBig;
- else
- byte_order = eByteOrderLittle;
-
- data.SetByteOrder(byte_order);
- offset = 0;
- m_dyld_all_image_infos.version = data.GetU32(&offset);
- }
- } else {
- return false;
- }
-
- const size_t count =
- (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2;
-
- const size_t bytes_read =
- m_process->ReadMemory(m_dyld_all_image_infos_addr, buf, count, error);
- if (bytes_read == count) {
- offset = 0;
- m_dyld_all_image_infos.version = data.GetU32(&offset);
- m_dyld_all_image_infos.dylib_info_count = data.GetU32(&offset);
- m_dyld_all_image_infos.dylib_info_addr = data.GetPointer(&offset);
- m_dyld_all_image_infos.notification = data.GetPointer(&offset);
- m_dyld_all_image_infos.processDetachedFromSharedRegion =
- data.GetU8(&offset);
- m_dyld_all_image_infos.libSystemInitialized = data.GetU8(&offset);
- // Adjust for padding.
- offset += addr_size - 2;
- m_dyld_all_image_infos.dyldImageLoadAddress = data.GetPointer(&offset);
- if (m_dyld_all_image_infos.version >= 11) {
- offset += addr_size * 8;
- uint64_t dyld_all_image_infos_addr = data.GetPointer(&offset);
-
- // When we started, we were given the actual address of the
- // all_image_infos struct (probably via TASK_DYLD_INFO) in memory -
- // this address is stored in m_dyld_all_image_infos_addr and is the
- // most accurate address we have.
-
- // We read the dyld_all_image_infos struct from memory; it contains its
- // own address. If the address in the struct does not match the actual
- // address, the dyld we're looking at has been loaded at a different
- // location (slid) from where it intended to load. The addresses in
- // the dyld_all_image_infos struct are the original, non-slid
- // addresses, and need to be adjusted. Most importantly the address of
- // dyld and the notification address need to be adjusted.
-
- if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) {
- uint64_t image_infos_offset =
- dyld_all_image_infos_addr -
- m_dyld_all_image_infos.dyldImageLoadAddress;
- uint64_t notification_offset =
- m_dyld_all_image_infos.notification -
- m_dyld_all_image_infos.dyldImageLoadAddress;
- m_dyld_all_image_infos.dyldImageLoadAddress =
- m_dyld_all_image_infos_addr - image_infos_offset;
- m_dyld_all_image_infos.notification =
- m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset;
- }
- }
- m_dyld_all_image_infos_stop_id = m_process->GetStopID();
- return true;
- }
- }
- return false;
-}
-
-bool DynamicLoaderMacOSXDYLD::AddModulesUsingImageInfosAddress(
- lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
- ImageInfo::collection image_infos;
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
- if (log)
- log->Printf("Adding %d modules.\n", image_infos_count);
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- if (m_process->GetStopID() == m_dyld_image_infos_stop_id)
- return true;
-
- StructuredData::ObjectSP image_infos_json_sp =
- m_process->GetLoadedDynamicLibrariesInfos(image_infos_addr,
- image_infos_count);
- if (image_infos_json_sp.get() && image_infos_json_sp->GetAsDictionary() &&
- image_infos_json_sp->GetAsDictionary()->HasKey("images") &&
- image_infos_json_sp->GetAsDictionary()
- ->GetValueForKey("images")
- ->GetAsArray() &&
- image_infos_json_sp->GetAsDictionary()
- ->GetValueForKey("images")
- ->GetAsArray()
- ->GetSize() == image_infos_count) {
- bool return_value = false;
- if (JSONImageInformationIntoImageInfo(image_infos_json_sp, image_infos)) {
- UpdateSpecialBinariesFromNewImageInfos(image_infos);
- return_value = AddModulesUsingImageInfos(image_infos);
- }
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- return return_value;
- }
-
- if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos))
- return false;
-
- UpdateImageInfosHeaderAndLoadCommands(image_infos, image_infos_count, false);
- bool return_value = AddModulesUsingImageInfos(image_infos);
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- return return_value;
-}
-
-bool DynamicLoaderMacOSXDYLD::RemoveModulesUsingImageInfosAddress(
- lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
- ImageInfo::collection image_infos;
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- if (m_process->GetStopID() == m_dyld_image_infos_stop_id)
- return true;
-
- // First read in the image_infos for the removed modules, and their headers &
- // load commands.
- if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) {
- if (log)
- log->PutCString("Failed reading image infos array.");
- return false;
- }
-
- if (log)
- log->Printf("Removing %d modules.", image_infos_count);
-
- ModuleList unloaded_module_list;
- for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
- if (log) {
- log->Printf("Removing module at address=0x%16.16" PRIx64 ".",
- image_infos[idx].address);
- image_infos[idx].PutToLog(log);
- }
-
- // Remove this image_infos from the m_all_image_infos. We do the
- // comparison by address rather than by file spec because we can have many
- // modules with the same "file spec" in the case that they are modules
- // loaded from memory.
- //
- // Also copy over the uuid from the old entry to the removed entry so we
- // can use it to lookup the module in the module list.
-
- ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
- for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
- if (image_infos[idx].address == (*pos).address) {
- image_infos[idx].uuid = (*pos).uuid;
-
- // Add the module from this image_info to the "unloaded_module_list".
- // We'll remove them all at one go later on.
-
- ModuleSP unload_image_module_sp(
- FindTargetModuleForImageInfo(image_infos[idx], false, NULL));
- if (unload_image_module_sp.get()) {
- // When we unload, be sure to use the image info from the old list,
- // since that has sections correctly filled in.
- UnloadModuleSections(unload_image_module_sp.get(), *pos);
- unloaded_module_list.AppendIfNeeded(unload_image_module_sp);
- } else {
- if (log) {
- log->Printf("Could not find module for unloading info entry:");
- image_infos[idx].PutToLog(log);
- }
- }
-
- // Then remove it from the m_dyld_image_infos:
-
- m_dyld_image_infos.erase(pos);
- break;
- }
- }
-
- if (pos == end) {
- if (log) {
- log->Printf("Could not find image_info entry for unloading image:");
- image_infos[idx].PutToLog(log);
- }
- }
- }
- if (unloaded_module_list.GetSize() > 0) {
- if (log) {
- log->PutCString("Unloaded:");
- unloaded_module_list.LogUUIDAndPaths(
- log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload");
- }
- m_process->GetTarget().GetImages().Remove(unloaded_module_list);
- }
- m_dyld_image_infos_stop_id = m_process->GetStopID();
- return true;
-}
-
-bool DynamicLoaderMacOSXDYLD::ReadImageInfos(
- lldb::addr_t image_infos_addr, uint32_t image_infos_count,
- ImageInfo::collection &image_infos) {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- const ByteOrder endian = GetByteOrderFromMagic(m_dyld.header.magic);
- const uint32_t addr_size = m_dyld.GetAddressByteSize();
-
- image_infos.resize(image_infos_count);
- const size_t count = image_infos.size() * 3 * addr_size;
- DataBufferHeap info_data(count, 0);
- Status error;
- const size_t bytes_read = m_process->ReadMemory(
- image_infos_addr, info_data.GetBytes(), info_data.GetByteSize(), error);
- if (bytes_read == count) {
- lldb::offset_t info_data_offset = 0;
- DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(),
- endian, addr_size);
- for (size_t i = 0;
- i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset);
- i++) {
- image_infos[i].address = info_data_ref.GetPointer(&info_data_offset);
- lldb::addr_t path_addr = info_data_ref.GetPointer(&info_data_offset);
- image_infos[i].mod_date = info_data_ref.GetPointer(&info_data_offset);
-
- char raw_path[PATH_MAX];
- m_process->ReadCStringFromMemory(path_addr, raw_path, sizeof(raw_path),
- error);
- // don't resolve the path
- if (error.Success()) {
- image_infos[i].file_spec.SetFile(raw_path, FileSpec::Style::native);
- }
- }
- return true;
- } else {
- return false;
- }
-}
-
-//----------------------------------------------------------------------
-// If we have found where the "_dyld_all_image_infos" lives in memory, read the
-// current info from it, and then update all image load addresses (or lack
-// thereof). Only do this if this is the first time we're reading the dyld
-// infos. Return true if we actually read anything, and false otherwise.
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos() {
- Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- if (m_process->GetStopID() == m_dyld_image_infos_stop_id ||
- m_dyld_image_infos.size() != 0)
- return false;
-
- if (ReadAllImageInfosStructure()) {
- // Nothing to load or unload?
- if (m_dyld_all_image_infos.dylib_info_count == 0)
- return true;
-
- if (m_dyld_all_image_infos.dylib_info_addr == 0) {
- // DYLD is updating the images now. So we should say we have no images,
- // and then we'll
- // figure it out when we hit the added breakpoint.
- return false;
- } else {
- if (!AddModulesUsingImageInfosAddress(
- m_dyld_all_image_infos.dylib_info_addr,
- m_dyld_all_image_infos.dylib_info_count)) {
- DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos.");
- m_dyld_image_infos.clear();
- }
- }
-
- // Now we have one more bit of business. If there is a library left in the
- // images for our target that doesn't have a load address, then it must be
- // something that we were expecting to load (for instance we read a load
- // command for it) but it didn't in fact load - probably because
- // DYLD_*_PATH pointed to an equivalent version. We don't want it to stay
- // in the target's module list or it will confuse us, so unload it here.
- Target &target = m_process->GetTarget();
- const ModuleList &target_modules = target.GetImages();
- ModuleList not_loaded_modules;
- std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex());
-
- size_t num_modules = target_modules.GetSize();
- for (size_t i = 0; i < num_modules; i++) {
- ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked(i);
- if (!module_sp->IsLoadedInTarget(&target)) {
- if (log) {
- StreamString s;
- module_sp->GetDescription(&s);
- log->Printf("Unloading pre-run module: %s.", s.GetData());
- }
- not_loaded_modules.Append(module_sp);
- }
- }
-
- if (not_loaded_modules.GetSize() != 0) {
- target.GetImages().Remove(not_loaded_modules);
- }
-
- return true;
- } else
- return false;
-}
-
-//----------------------------------------------------------------------
-// Read a mach_header at ADDR into HEADER, and also fill in the load command
-// data into LOAD_COMMAND_DATA if it is non-NULL.
-//
-// Returns true if we succeed, false if we fail for any reason.
-//----------------------------------------------------------------------
-bool DynamicLoaderMacOSXDYLD::ReadMachHeader(lldb::addr_t addr,
- llvm::MachO::mach_header *header,
- DataExtractor *load_command_data) {
- DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0);
- Status error;
- size_t bytes_read = m_process->ReadMemory(addr, header_bytes.GetBytes(),
- header_bytes.GetByteSize(), error);
- if (bytes_read == sizeof(llvm::MachO::mach_header)) {
- lldb::offset_t offset = 0;
- ::memset(header, 0, sizeof(llvm::MachO::mach_header));
-
- // Get the magic byte unswapped so we can figure out what we are dealing
- // with
- DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(),
- endian::InlHostByteOrder(), 4);
- header->magic = data.GetU32(&offset);
- lldb::addr_t load_cmd_addr = addr;
- data.SetByteOrder(
- DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(header->magic));
- switch (header->magic) {
- case llvm::MachO::MH_MAGIC:
- case llvm::MachO::MH_CIGAM:
- data.SetAddressByteSize(4);
- load_cmd_addr += sizeof(llvm::MachO::mach_header);
- break;
-
- case llvm::MachO::MH_MAGIC_64:
- case llvm::MachO::MH_CIGAM_64:
- data.SetAddressByteSize(8);
- load_cmd_addr += sizeof(llvm::MachO::mach_header_64);
- break;
-
- default:
- return false;
- }
-
- // Read the rest of dyld's mach header
- if (data.GetU32(&offset, &header->cputype,
- (sizeof(llvm::MachO::mach_header) / sizeof(uint32_t)) -
- 1)) {
- if (load_command_data == NULL)
- return true; // We were able to read the mach_header and weren't asked
- // to read the load command bytes
-
- DataBufferSP load_cmd_data_sp(new DataBufferHeap(header->sizeofcmds, 0));
-
- size_t load_cmd_bytes_read =
- m_process->ReadMemory(load_cmd_addr, load_cmd_data_sp->GetBytes(),
- load_cmd_data_sp->GetByteSize(), error);
-
- if (load_cmd_bytes_read == header->sizeofcmds) {
- // Set the load command data and also set the correct endian swap
- // settings and the correct address size
- load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds);
- load_command_data->SetByteOrder(data.GetByteOrder());
- load_command_data->SetAddressByteSize(data.GetAddressByteSize());
- return true; // We successfully read the mach_header and the load
- // command data
- }
-
- return false; // We weren't able to read the load command data
- }
- }
- return false; // We failed the read the mach_header
-}
-
-//----------------------------------------------------------------------
-// Parse the load commands for an image
-//----------------------------------------------------------------------
-uint32_t DynamicLoaderMacOSXDYLD::ParseLoadCommands(const DataExtractor &data,
- ImageInfo &dylib_info,
- FileSpec *lc_id_dylinker) {
- lldb::offset_t offset = 0;
- uint32_t cmd_idx;
- Segment segment;
- dylib_info.Clear(true);
-
- for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) {
- // Clear out any load command specific data from DYLIB_INFO since we are
- // about to read it.
-
- if (data.ValidOffsetForDataOfSize(offset,
- sizeof(llvm::MachO::load_command))) {
- llvm::MachO::load_command load_cmd;
- lldb::offset_t load_cmd_offset = offset;
- load_cmd.cmd = data.GetU32(&offset);
- load_cmd.cmdsize = data.GetU32(&offset);
- switch (load_cmd.cmd) {
- case llvm::MachO::LC_SEGMENT: {
- segment.name.SetTrimmedCStringWithLength(
- (const char *)data.GetData(&offset, 16), 16);
- // We are putting 4 uint32_t values 4 uint64_t values so we have to use
- // multiple 32 bit gets below.
- segment.vmaddr = data.GetU32(&offset);
- segment.vmsize = data.GetU32(&offset);
- segment.fileoff = data.GetU32(&offset);
- segment.filesize = data.GetU32(&offset);
- // Extract maxprot, initprot, nsects and flags all at once
- data.GetU32(&offset, &segment.maxprot, 4);
- dylib_info.segments.push_back(segment);
- } break;
-
- case llvm::MachO::LC_SEGMENT_64: {
- segment.name.SetTrimmedCStringWithLength(
- (const char *)data.GetData(&offset, 16), 16);
- // Extract vmaddr, vmsize, fileoff, and filesize all at once
- data.GetU64(&offset, &segment.vmaddr, 4);
- // Extract maxprot, initprot, nsects and flags all at once
- data.GetU32(&offset, &segment.maxprot, 4);
- dylib_info.segments.push_back(segment);
- } break;
-
- case llvm::MachO::LC_ID_DYLINKER:
- if (lc_id_dylinker) {
- const lldb::offset_t name_offset =
- load_cmd_offset + data.GetU32(&offset);
- const char *path = data.PeekCStr(name_offset);
- lc_id_dylinker->SetFile(path, FileSpec::Style::native);
- FileSystem::Instance().Resolve(*lc_id_dylinker);
- }
- break;
-
- case llvm::MachO::LC_UUID:
- dylib_info.uuid = UUID::fromOptionalData(data.GetData(&offset, 16), 16);
- break;
-
- default:
- break;
- }
- // Set offset to be the beginning of the next load command.
- offset = load_cmd_offset + load_cmd.cmdsize;
- }
- }
-
- // All sections listed in the dyld image info structure will all either be
- // fixed up already, or they will all be off by a single slide amount that is
- // determined by finding the first segment that is at file offset zero which
- // also has bytes (a file size that is greater than zero) in the object file.
-
- // Determine the slide amount (if any)
- const size_t num_sections = dylib_info.segments.size();
- for (size_t i = 0; i < num_sections; ++i) {
- // Iterate through the object file sections to find the first section that
- // starts of file offset zero and that has bytes in the file...
- if ((dylib_info.segments[i].fileoff == 0 &&
- dylib_info.segments[i].filesize > 0) ||
- (dylib_info.segments[i].name == ConstString("__TEXT"))) {
- dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr;
- // We have found the slide amount, so we can exit this for loop.
- break;
- }
- }
- return cmd_idx;
-}
-
-//----------------------------------------------------------------------
-// Read the mach_header and load commands for each image that the
-// _dyld_all_image_infos structure points to and cache the results.
-//----------------------------------------------------------------------
-
-void DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands(
- ImageInfo::collection &image_infos, uint32_t infos_count,
- bool update_executable) {
- uint32_t exe_idx = UINT32_MAX;
- // Read any UUID values that we can get
- for (uint32_t i = 0; i < infos_count; i++) {
- if (!image_infos[i].UUIDValid()) {
- DataExtractor data; // Load command data
- if (!ReadMachHeader(image_infos[i].address, &image_infos[i].header,
- &data))
- continue;
-
- ParseLoadCommands(data, image_infos[i], NULL);
-
- if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE)
- exe_idx = i;
- }
- }
-
- Target &target = m_process->GetTarget();
-
- if (exe_idx < image_infos.size()) {
- const bool can_create = true;
- ModuleSP exe_module_sp(
- FindTargetModuleForImageInfo(image_infos[exe_idx], can_create, NULL));
-
- if (exe_module_sp) {
- UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
-
- if (exe_module_sp.get() != target.GetExecutableModulePointer()) {
- // Don't load dependent images since we are in dyld where we will know
- // and find out about all images that are loaded. Also when setting the
- // executable module, it will clear the targets module list, and if we
- // have an in memory dyld module, it will get removed from the list so
- // we will need to add it back after setting the executable module, so
- // we first try and see if we already have a weak pointer to the dyld
- // module, make it into a shared pointer, then add the executable, then
- // re-add it back to make sure it is always in the list.
- ModuleSP dyld_module_sp(GetDYLDModule());
-
- m_process->GetTarget().SetExecutableModule(exe_module_sp,
- eLoadDependentsNo);
-
- if (dyld_module_sp) {
- if (target.GetImages().AppendIfNeeded(dyld_module_sp)) {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
-
- // Also add it to the section list.
- UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
- }
- }
- }
- }
- }
-}
-
-//----------------------------------------------------------------------
-// Dump the _dyld_all_image_infos members and all current image infos that we
-// have parsed to the file handle provided.
-//----------------------------------------------------------------------
-void DynamicLoaderMacOSXDYLD::PutToLog(Log *log) const {
- if (log == NULL)
- return;
-
- std::lock_guard<std::recursive_mutex> guard(m_mutex);
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
- log->Printf(
- "dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64
- ", notify=0x%8.8" PRIx64 " }",
- m_dyld_all_image_infos.version, m_dyld_all_image_infos.dylib_info_count,
- (uint64_t)m_dyld_all_image_infos.dylib_info_addr,
- (uint64_t)m_dyld_all_image_infos.notification);
- size_t i;
- const size_t count = m_dyld_image_infos.size();
- if (count > 0) {
- log->PutCString("Loaded:");
- for (i = 0; i < count; i++)
- m_dyld_image_infos[i].PutToLog(log);
- }
-}
-
-bool DynamicLoaderMacOSXDYLD::SetNotificationBreakpoint() {
- DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n",
- __FUNCTION__, StateAsCString(m_process->GetState()));
- if (m_break_id == LLDB_INVALID_BREAK_ID) {
- if (m_dyld_all_image_infos.notification != LLDB_INVALID_ADDRESS) {
- Address so_addr;
- // Set the notification breakpoint and install a breakpoint callback
- // function that will get called each time the breakpoint gets hit. We
- // will use this to track when shared libraries get loaded/unloaded.
- bool resolved = m_process->GetTarget().ResolveLoadAddress(
- m_dyld_all_image_infos.notification, so_addr);
- if (!resolved) {
- ModuleSP dyld_module_sp = GetDYLDModule();
- if (dyld_module_sp) {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
-
- UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
- resolved = m_process->GetTarget().ResolveLoadAddress(
- m_dyld_all_image_infos.notification, so_addr);
- }
- }
-
- if (resolved) {
- Breakpoint *dyld_break =
- m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get();
- dyld_break->SetCallback(DynamicLoaderMacOSXDYLD::NotifyBreakpointHit,
- this, true);
- dyld_break->SetBreakpointKind("shared-library-event");
- m_break_id = dyld_break->GetID();
- }
- }
- }
- return m_break_id != LLDB_INVALID_BREAK_ID;
-}
-
-Status DynamicLoaderMacOSXDYLD::CanLoadImage() {
- Status error;
- // In order for us to tell if we can load a shared library we verify that the
- // dylib_info_addr isn't zero (which means no shared libraries have been set
- // yet, or dyld is currently mucking with the shared library list).
- if (ReadAllImageInfosStructure()) {
- // TODO: also check the _dyld_global_lock_held variable in
- // libSystem.B.dylib?
- // TODO: check the malloc lock?
- // TODO: check the objective C lock?
- if (m_dyld_all_image_infos.dylib_info_addr != 0)
- return error; // Success
- }
-
- error.SetErrorString("unsafe to load or unload shared libraries");
- return error;
-}
-
-bool DynamicLoaderMacOSXDYLD::GetSharedCacheInformation(
- lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache,
- LazyBool &private_shared_cache) {
- base_address = LLDB_INVALID_ADDRESS;
- uuid.Clear();
- using_shared_cache = eLazyBoolCalculate;
- private_shared_cache = eLazyBoolCalculate;
-
- if (m_process) {
- addr_t all_image_infos = m_process->GetImageInfoAddress();
-
- // The address returned by GetImageInfoAddress may be the address of dyld
- // (don't want) or it may be the address of the dyld_all_image_infos
- // structure (want). The first four bytes will be either the version field
- // (all_image_infos) or a Mach-O file magic constant. Version 13 and higher
- // of dyld_all_image_infos is required to get the sharedCacheUUID field.
-
- Status err;
- uint32_t version_or_magic =
- m_process->ReadUnsignedIntegerFromMemory(all_image_infos, 4, -1, err);
- if (version_or_magic != static_cast<uint32_t>(-1) &&
- version_or_magic != llvm::MachO::MH_MAGIC &&
- version_or_magic != llvm::MachO::MH_CIGAM &&
- version_or_magic != llvm::MachO::MH_MAGIC_64 &&
- version_or_magic != llvm::MachO::MH_CIGAM_64 &&
- version_or_magic >= 13) {
- addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS;
- int wordsize = m_process->GetAddressByteSize();
- if (wordsize == 8) {
- sharedCacheUUID_address =
- all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h>
- }
- if (wordsize == 4) {
- sharedCacheUUID_address =
- all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h>
- }
- if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) {
- uuid_t shared_cache_uuid;
- if (m_process->ReadMemory(sharedCacheUUID_address, shared_cache_uuid,
- sizeof(uuid_t), err) == sizeof(uuid_t)) {
- uuid = UUID::fromOptionalData(shared_cache_uuid, 16);
- if (uuid.IsValid()) {
- using_shared_cache = eLazyBoolYes;
- }
- }
-
- if (version_or_magic >= 15) {
- // The sharedCacheBaseAddress field is the next one in the
- // dyld_all_image_infos struct.
- addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16;
- Status error;
- base_address = m_process->ReadUnsignedIntegerFromMemory(
- sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS,
- error);
- if (error.Fail())
- base_address = LLDB_INVALID_ADDRESS;
- }
-
- return true;
- }
-
- //
- // add
- // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos
- // after
- // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch
- // it.
- }
- }
- return false;
-}
-
-void DynamicLoaderMacOSXDYLD::Initialize() {
- PluginManager::RegisterPlugin(GetPluginNameStatic(),
- GetPluginDescriptionStatic(), CreateInstance);
-}
-
-void DynamicLoaderMacOSXDYLD::Terminate() {
- PluginManager::UnregisterPlugin(CreateInstance);
-}
-
-lldb_private::ConstString DynamicLoaderMacOSXDYLD::GetPluginNameStatic() {
- static ConstString g_name("macosx-dyld");
- return g_name;
-}
-
-const char *DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic() {
- return "Dynamic loader plug-in that watches for shared library loads/unloads "
- "in MacOSX user processes.";
-}
-
-//------------------------------------------------------------------
-// PluginInterface protocol
-//------------------------------------------------------------------
-lldb_private::ConstString DynamicLoaderMacOSXDYLD::GetPluginName() {
- return GetPluginNameStatic();
-}
-
-uint32_t DynamicLoaderMacOSXDYLD::GetPluginVersion() { return 1; }
-
-uint32_t DynamicLoaderMacOSXDYLD::AddrByteSize() {
- std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
-
- switch (m_dyld.header.magic) {
- case llvm::MachO::MH_MAGIC:
- case llvm::MachO::MH_CIGAM:
- return 4;
-
- case llvm::MachO::MH_MAGIC_64:
- case llvm::MachO::MH_CIGAM_64:
- return 8;
-
- default:
- break;
- }
- return 0;
-}
-
-lldb::ByteOrder DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(uint32_t magic) {
- switch (magic) {
- case llvm::MachO::MH_MAGIC:
- case llvm::MachO::MH_MAGIC_64:
- return endian::InlHostByteOrder();
-
- case llvm::MachO::MH_CIGAM:
- case llvm::MachO::MH_CIGAM_64:
- if (endian::InlHostByteOrder() == lldb::eByteOrderBig)
- return lldb::eByteOrderLittle;
- else
- return lldb::eByteOrderBig;
-
- default:
- break;
- }
- return lldb::eByteOrderInvalid;
-}
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h
deleted file mode 100644
index 3dc0f15bddf7..000000000000
--- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h
+++ /dev/null
@@ -1,182 +0,0 @@
-//===-- DynamicLoaderMacOSXDYLD.h -------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS /
-// watchOS / BridgeOS)
-// platforms earlier than 2016, where lldb would read the "dyld_all_image_infos"
-// dyld internal structure to understand where things were loaded and the
-// solib loaded/unloaded notification function we put a breakpoint on gives us
-// an array of (load address, mod time, file path) tuples.
-//
-// As of late 2016, the new DynamicLoaderMacOS plugin should be used, which uses
-// dyld SPI functions to get the same information without reading internal dyld
-// data structures.
-
-#ifndef liblldb_DynamicLoaderMacOSXDYLD_h_
-#define liblldb_DynamicLoaderMacOSXDYLD_h_
-
-#include <mutex>
-#include <vector>
-
-#include "lldb/Host/SafeMachO.h"
-#include "lldb/Target/DynamicLoader.h"
-#include "lldb/Target/Process.h"
-#include "lldb/Utility/FileSpec.h"
-#include "lldb/Utility/StructuredData.h"
-#include "lldb/Utility/UUID.h"
-
-#include "DynamicLoaderDarwin.h"
-
-class DynamicLoaderMacOSXDYLD : public lldb_private::DynamicLoaderDarwin {
-public:
- DynamicLoaderMacOSXDYLD(lldb_private::Process *process);
-
- virtual ~DynamicLoaderMacOSXDYLD() override;
-
- //------------------------------------------------------------------
- // Static Functions
- //------------------------------------------------------------------
- static void Initialize();
-
- static void Terminate();
-
- static lldb_private::ConstString GetPluginNameStatic();
-
- static const char *GetPluginDescriptionStatic();
-
- static lldb_private::DynamicLoader *
- CreateInstance(lldb_private::Process *process, bool force);
-
- //------------------------------------------------------------------
- /// Called after attaching a process.
- ///
- /// Allow DynamicLoader plug-ins to execute some code after
- /// attaching to a process.
- //------------------------------------------------------------------
- bool ProcessDidExec() override;
-
- lldb_private::Status CanLoadImage() override;
-
- bool GetSharedCacheInformation(
- lldb::addr_t &base_address, lldb_private::UUID &uuid,
- lldb_private::LazyBool &using_shared_cache,
- lldb_private::LazyBool &private_shared_cache) override;
-
- //------------------------------------------------------------------
- // PluginInterface protocol
- //------------------------------------------------------------------
- lldb_private::ConstString GetPluginName() override;
-
- uint32_t GetPluginVersion() override;
-
-protected:
- void PutToLog(lldb_private::Log *log) const;
-
- void DoInitialImageFetch() override;
-
- bool NeedToDoInitialImageFetch() override;
-
- bool DidSetNotificationBreakpoint() override;
-
- void DoClear() override;
-
- bool ReadDYLDInfoFromMemoryAndSetNotificationCallback(lldb::addr_t addr);
-
- static bool
- NotifyBreakpointHit(void *baton,
- lldb_private::StoppointCallbackContext *context,
- lldb::user_id_t break_id, lldb::user_id_t break_loc_id);
-
- uint32_t AddrByteSize();
-
- bool ReadMachHeader(lldb::addr_t addr, llvm::MachO::mach_header *header,
- lldb_private::DataExtractor *load_command_data);
-
- uint32_t ParseLoadCommands(const lldb_private::DataExtractor &data,
- ImageInfo &dylib_info,
- lldb_private::FileSpec *lc_id_dylinker);
-
- struct DYLDAllImageInfos {
- uint32_t version;
- uint32_t dylib_info_count; // Version >= 1
- lldb::addr_t dylib_info_addr; // Version >= 1
- lldb::addr_t notification; // Version >= 1
- bool processDetachedFromSharedRegion; // Version >= 1
- bool libSystemInitialized; // Version >= 2
- lldb::addr_t dyldImageLoadAddress; // Version >= 2
-
- DYLDAllImageInfos()
- : version(0), dylib_info_count(0),
- dylib_info_addr(LLDB_INVALID_ADDRESS),
- notification(LLDB_INVALID_ADDRESS),
- processDetachedFromSharedRegion(false), libSystemInitialized(false),
- dyldImageLoadAddress(LLDB_INVALID_ADDRESS) {}
-
- void Clear() {
- version = 0;
- dylib_info_count = 0;
- dylib_info_addr = LLDB_INVALID_ADDRESS;
- notification = LLDB_INVALID_ADDRESS;
- processDetachedFromSharedRegion = false;
- libSystemInitialized = false;
- dyldImageLoadAddress = LLDB_INVALID_ADDRESS;
- }
-
- bool IsValid() const { return version >= 1 || version <= 6; }
- };
-
- static lldb::ByteOrder GetByteOrderFromMagic(uint32_t magic);
-
- bool SetNotificationBreakpoint() override;
-
- void ClearNotificationBreakpoint() override;
-
- // There is a little tricky bit where you might initially attach while dyld is
- // updating
- // the all_image_infos, and you can't read the infos, so you have to continue
- // and pick it
- // up when you hit the update breakpoint. At that point, you need to run this
- // initialize
- // function, but when you do it that way you DON'T need to do the extra work
- // you would at
- // the breakpoint.
- // So this function will only do actual work if the image infos haven't been
- // read yet.
- // If it does do any work, then it will return true, and false otherwise.
- // That way you can
- // call it in the breakpoint action, and if it returns true you're done.
- bool InitializeFromAllImageInfos();
-
- bool ReadAllImageInfosStructure();
-
- bool AddModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr,
- uint32_t image_infos_count);
-
- bool RemoveModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr,
- uint32_t image_infos_count);
-
- void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos,
- uint32_t infos_count,
- bool update_executable);
-
- bool ReadImageInfos(lldb::addr_t image_infos_addr, uint32_t image_infos_count,
- ImageInfo::collection &image_infos);
-
- lldb::addr_t m_dyld_all_image_infos_addr;
- DYLDAllImageInfos m_dyld_all_image_infos;
- uint32_t m_dyld_all_image_infos_stop_id;
- lldb::user_id_t m_break_id;
- mutable std::recursive_mutex m_mutex;
- bool m_process_image_addr_is_all_images_infos;
-
-private:
- DISALLOW_COPY_AND_ASSIGN(DynamicLoaderMacOSXDYLD);
-};
-
-#endif // liblldb_DynamicLoaderMacOSXDYLD_h_
diff --git a/source/Plugins/DynamicLoader/POSIX-DYLD/CMakeLists.txt b/source/Plugins/DynamicLoader/POSIX-DYLD/CMakeLists.txt
deleted file mode 100644
index 409ba92a0e19..000000000000
--- a/source/Plugins/DynamicLoader/POSIX-DYLD/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderPosixDYLD PLUGIN
- AuxVector.cpp
- DYLDRendezvous.cpp
- DynamicLoaderPOSIXDYLD.cpp
-
- LINK_LIBS
- lldbBreakpoint
- lldbCore
- lldbHost
- lldbSymbol
- lldbTarget
- lldbPluginProcessElfCore
- LINK_COMPONENTS
- Support
- )
diff --git a/source/Plugins/DynamicLoader/Static/CMakeLists.txt b/source/Plugins/DynamicLoader/Static/CMakeLists.txt
deleted file mode 100644
index be54a3053470..000000000000
--- a/source/Plugins/DynamicLoader/Static/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderStatic PLUGIN
- DynamicLoaderStatic.cpp
-
- LINK_LIBS
- lldbCore
- lldbHost
- lldbSymbol
- lldbTarget
- lldbUtility
- )
diff --git a/source/Plugins/DynamicLoader/Windows-DYLD/CMakeLists.txt b/source/Plugins/DynamicLoader/Windows-DYLD/CMakeLists.txt
deleted file mode 100644
index 7557ada51466..000000000000
--- a/source/Plugins/DynamicLoader/Windows-DYLD/CMakeLists.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-add_lldb_library(lldbPluginDynamicLoaderWindowsDYLD PLUGIN
- DynamicLoaderWindowsDYLD.cpp
-
- LINK_LIBS
- lldbCore
- lldbTarget
- LINK_COMPONENTS
- Support
- )