diff options
Diffstat (limited to 'source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp')
| -rw-r--r-- | source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp | 2612 |
1 files changed, 1250 insertions, 1362 deletions
diff --git a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp b/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp index 4021b44c96a97..b7010303bcaa3 100644 --- a/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp +++ b/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp @@ -1,4 +1,5 @@ -//===-- DynamicLoaderDarwinKernel.cpp -----------------------------*- C++ -*-===// +//===-- DynamicLoaderDarwinKernel.cpp -----------------------------*- C++ +//-*-===// // // The LLVM Compiler Infrastructure // @@ -9,6 +10,7 @@ #include "lldb/Utility/SafeMachO.h" +#include "Plugins/Platform/MacOSX/PlatformDarwinKernel.h" #include "lldb/Breakpoint/StoppointCallbackContext.h" #include "lldb/Core/DataBuffer.h" #include "lldb/Core/DataBufferHeap.h" @@ -28,14 +30,13 @@ #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" #include "lldb/Target/ThreadPlanRunToAddress.h" -#include "Plugins/Platform/MacOSX/PlatformDarwinKernel.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__) +#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__) #else #define DEBUG_PRINTF(fmt, ...) #endif @@ -44,89 +45,79 @@ 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 +// 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 -}; - -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)."}, - { 0, NULL, NULL } -}; - -static PropertyDefinition -g_properties[] = -{ - { "load-kexts" , OptionValue::eTypeBoolean, true, true, NULL, NULL, "Automatically loads kext images when attaching to a kernel." }, - { "scan-type", OptionValue::eTypeEnum, true, eKASLRScanNearPC, NULL, g_kaslr_kernel_scan_enum_values, "Control how many reads lldb will make while searching for a Darwin kernel on attach." }, - { NULL , OptionValue::eTypeInvalid, false, 0 , NULL, NULL, NULL } -}; - -enum { - ePropertyLoadKexts, - ePropertyScanType +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 }; -class DynamicLoaderDarwinKernelProperties : public Properties -{ +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)."}, + {0, NULL, NULL}}; + +static PropertyDefinition g_properties[] = { + {"load-kexts", OptionValue::eTypeBoolean, true, true, NULL, NULL, + "Automatically loads kext images when attaching to a kernel."}, + {"scan-type", OptionValue::eTypeEnum, true, eKASLRScanNearPC, NULL, + g_kaslr_kernel_scan_enum_values, "Control how many reads lldb will make " + "while searching for a Darwin kernel on " + "attach."}, + {NULL, OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL}}; + +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); - } - - + 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; +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; +static const DynamicLoaderDarwinKernelPropertiesSP &GetGlobalProperties() { + static DynamicLoaderDarwinKernelPropertiesSP g_settings_sp; + if (!g_settings_sp) + g_settings_sp.reset(new DynamicLoaderDarwinKernelProperties()); + return g_settings_sp; } //---------------------------------------------------------------------- @@ -134,359 +125,382 @@ GetGlobalProperties() // 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: - 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; +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; } + } } - // 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); + // 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: + 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; } - return NULL; + } + + // 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); - } - } +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; + } + 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. +// 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; +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; + 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->GetType() != ObjectFile::eTypeExecutable || + exe_objfile->GetStrata() != ObjectFile::eStrataKernel) + return LLDB_INVALID_ADDRESS; - if (!exe_objfile->GetHeaderAddress().IsValid()) - return LLDB_INVALID_ADDRESS; + if (!exe_objfile->GetHeaderAddress().IsValid()) + return LLDB_INVALID_ADDRESS; - if (CheckForKernelImageAtAddress (exe_objfile->GetHeaderAddress().GetFileAddress(), process) == exe_module->GetUUID()) - return exe_objfile->GetHeaderAddress().GetFileAddress(); + if (CheckForKernelImageAtAddress( + exe_objfile->GetHeaderAddress().GetFileAddress(), process) == + exe_module->GetUUID()) + return exe_objfile->GetHeaderAddress().GetFileAddress(); - return LLDB_INVALID_ADDRESS; + return LLDB_INVALID_ADDRESS; } //---------------------------------------------------------------------- -// If the debug flag is included in the boot-args nvram setting, the kernel's load 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. +// 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; - - Error read_err; - addr_t addr = LLDB_INVALID_ADDRESS; - addr_t kernel_addresses_64[] = { 0xffffff8000002010ULL, 0xffffff8000004010ULL, - 0xfffffff000002010ULL, 0xfffffff000004010ULL, - LLDB_INVALID_ADDRESS }; - addr_t kernel_addresses_32[] = { 0xffff0110, - LLDB_INVALID_ADDRESS }; - for (size_t i = 0; kernel_addresses_64[i] != LLDB_INVALID_ADDRESS; i++) - { - addr = process->ReadUnsignedIntegerFromMemory (kernel_addresses_64[i], 8, LLDB_INVALID_ADDRESS, read_err); - if (CheckForKernelImageAtAddress (addr, process).IsValid()) - { - return addr; - } - } - - for (size_t i = 0; kernel_addresses_32[i] != LLDB_INVALID_ADDRESS; i++) - { - addr = process->ReadUnsignedIntegerFromMemory (kernel_addresses_32[i], 4, LLDB_INVALID_ADDRESS, read_err); - if (CheckForKernelImageAtAddress (addr, process).IsValid()) - { - return addr; - } - } - +DynamicLoaderDarwinKernel::SearchForKernelWithDebugHints(Process *process) { + if (GetGlobalProperties()->GetScanType() == eKASLRScanNone) return LLDB_INVALID_ADDRESS; + + Error 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. +// 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; - } +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); - - 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) - { - if (CheckForKernelImageAtAddress (addr, process).IsValid()) - return addr; - if (CheckForKernelImageAtAddress (addr + 0x1000, process).IsValid()) - return addr + 0x1000; - if (CheckForKernelImageAtAddress (addr + 0x2000, process).IsValid()) - return addr + 0x2000; - if (CheckForKernelImageAtAddress (addr + 0x4000, process).IsValid()) - return addr + 0x4000; - } + ThreadSP thread = process->GetThreadList().GetSelectedThread(); + if (thread.get() == NULL) + return LLDB_INVALID_ADDRESS; + addr_t pc = thread->GetRegisterContext()->GetPC(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) { + if (CheckForKernelImageAtAddress(addr, process).IsValid()) + return addr; + if (CheckForKernelImageAtAddress(addr + 0x1000, process).IsValid()) + return addr + 0x1000; + if (CheckForKernelImageAtAddress(addr + 0x2000, process).IsValid()) + return addr + 0x2000; + 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. +// 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) - { - if (CheckForKernelImageAtAddress (addr, process).IsValid()) - return addr; - if (CheckForKernelImageAtAddress (addr + 0x1000, process).IsValid()) - return addr + 0x1000; - if (CheckForKernelImageAtAddress (addr + 0x2000, process).IsValid()) - return addr + 0x2000; - if (CheckForKernelImageAtAddress (addr + 0x4000, process).IsValid()) - return addr + 0x4000; - addr += 0x100000; - } +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) { + if (CheckForKernelImageAtAddress(addr, process).IsValid()) + return addr; + if (CheckForKernelImageAtAddress(addr + 0x1000, process).IsValid()) + return addr + 0x1000; + if (CheckForKernelImageAtAddress(addr + 0x2000, process).IsValid()) + return addr + 0x2000; + if (CheckForKernelImageAtAddress(addr + 0x4000, process).IsValid()) + return addr + 0x4000; + addr += 0x100000; + } + return LLDB_INVALID_ADDRESS; } //---------------------------------------------------------------------- // 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. +// 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(); +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); - - // 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). - - Error read_error; - uint64_t result = process->ReadUnsignedIntegerFromMemory (addr, 4, LLDB_INVALID_ADDRESS, read_error); - if (result != llvm::MachO::MH_MAGIC_64 - && result != llvm::MachO::MH_MAGIC - && result != llvm::MachO::MH_CIGAM - && result != llvm::MachO::MH_CIGAM_64) - { - return UUID(); - } + if (log) + log->Printf("DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress: " + "looking for kernel binary at 0x%" PRIx64, + addr); + + // 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). - // Read the mach header and see whether it looks like a kernel - llvm::MachO::mach_header header; - if (process->DoReadMemory (addr, &header, sizeof (header), read_error) != sizeof (header)) - return UUID(); - - 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); + Error read_error; + uint8_t magicbuf[4]; + if (process->ReadMemoryFromInferior (addr, magicbuf, sizeof (magicbuf), read_error) != sizeof (magicbuf)) + return UUID(); + + 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 (magicbuf, &magicks[i], sizeof (magicbuf)) == 0) + found_matching_pattern = true; + + if (found_matching_pattern == false) + return UUID(); + + // Read the mach header and see whether it looks like a kernel + llvm::MachO::mach_header header; + if (process->DoReadMemory(addr, &header, sizeof(header), read_error) != + sizeof(header)) + return UUID(); + + 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); + } + + // 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", false), 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(); } - // 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", false), addr); - if (!memory_module_sp.get()) - return UUID(); - - ObjectFile *exe_objfile = memory_module_sp->GetObjectFile(); - if (exe_objfile == NULL) - 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) - log->Printf ("DynamicLoaderDarwinKernel::CheckForKernelImageAtAddress: kernel binary image found at 0x%" PRIx64, addr); - return memory_module_sp->GetUUID(); + 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(); + 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) -{ - Error 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); - } +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) { + Error 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); -} +DynamicLoaderDarwinKernel::~DynamicLoaderDarwinKernel() { Clear(true); } -void -DynamicLoaderDarwinKernel::UpdateIfNeeded() -{ - LoadKernelModuleIfNeeded(); - SetNotificationBreakpointIfNeeded (); +void DynamicLoaderDarwinKernel::UpdateIfNeeded() { + LoadKernelModuleIfNeeded(); + SetNotificationBreakpointIfNeeded(); } //------------------------------------------------------------------ /// Called after attaching a process. @@ -494,11 +508,9 @@ DynamicLoaderDarwinKernel::UpdateIfNeeded() /// Allow DynamicLoader plug-ins to execute some code after /// attaching to a process. //------------------------------------------------------------------ -void -DynamicLoaderDarwinKernel::DidAttach () -{ - PrivateInitialize(m_process); - UpdateIfNeeded(); +void DynamicLoaderDarwinKernel::DidAttach() { + PrivateInitialize(m_process); + UpdateIfNeeded(); } //------------------------------------------------------------------ @@ -507,592 +519,528 @@ DynamicLoaderDarwinKernel::DidAttach () /// Allow DynamicLoader plug-ins to execute some code after /// attaching to a process. //------------------------------------------------------------------ -void -DynamicLoaderDarwinKernel::DidLaunch () -{ - PrivateInitialize(m_process); - UpdateIfNeeded(); +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; +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; -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; + 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; - } +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; +ModuleSP DynamicLoaderDarwinKernel::KextImageInfo::GetModule() { + return m_module_sp; } -void -DynamicLoaderDarwinKernel::KextImageInfo::SetLoadAddress (addr_t load_addr) -{ - m_load_address = load_addr; +void DynamicLoaderDarwinKernel::KextImageInfo::SetLoadAddress( + addr_t load_addr) { + m_load_address = load_addr; } -addr_t -DynamicLoaderDarwinKernel::KextImageInfo::GetLoadAddress () const -{ - return m_load_address; +addr_t DynamicLoaderDarwinKernel::KextImageInfo::GetLoadAddress() const { + return m_load_address; } -uint64_t -DynamicLoaderDarwinKernel::KextImageInfo::GetSize () const -{ - return m_size; +uint64_t DynamicLoaderDarwinKernel::KextImageInfo::GetSize() const { + return m_size; } -void -DynamicLoaderDarwinKernel::KextImageInfo::SetSize (uint64_t size) -{ - m_size = size; +void DynamicLoaderDarwinKernel::KextImageInfo::SetSize(uint64_t size) { + m_size = size; } -uint32_t -DynamicLoaderDarwinKernel::KextImageInfo::GetProcessStopId () const -{ - return m_load_process_stop_id; +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; +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()) - { - if (m_uuid == rhs.GetUUID()) - { - return true; - } - return false; +bool DynamicLoaderDarwinKernel::KextImageInfo:: +operator==(const KextImageInfo &rhs) { + if (m_uuid.IsValid() || rhs.GetUUID().IsValid()) { + if (m_uuid == rhs.GetUUID()) { + return true; } + return false; + } - if (m_name == rhs.GetName() && m_load_address == rhs.GetLoadAddress()) - return true; + if (m_name == rhs.GetName() && m_load_address == rhs.GetLoadAddress()) + return true; - return false; + return false; } -void -DynamicLoaderDarwinKernel::KextImageInfo::SetName (const char *name) -{ - m_name = name; +void DynamicLoaderDarwinKernel::KextImageInfo::SetName(const char *name) { + m_name = name; } -std::string -DynamicLoaderDarwinKernel::KextImageInfo::GetName () const -{ - return m_name; +std::string DynamicLoaderDarwinKernel::KextImageInfo::GetName() const { + return m_name; } -void -DynamicLoaderDarwinKernel::KextImageInfo::SetUUID (const UUID &uuid) -{ - m_uuid = uuid; +void DynamicLoaderDarwinKernel::KextImageInfo::SetUUID(const UUID &uuid) { + m_uuid = uuid; } -UUID -DynamicLoaderDarwinKernel::KextImageInfo::GetUUID () const -{ - return m_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 +// 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; - file_spec.SetFile (m_name.c_str(), false); - - ModuleSP memory_module_sp = process->ReadModuleFromMemory (file_spec, m_load_address); - - 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; - } - } +// Returns true if m_memory_module_sp is now set to a valid Module. - // 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; - } - } +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; - // 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(); - } + FileSpec file_spec; + file_spec.SetFile(m_name.c_str(), false); - 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); - } - } + ModuleSP memory_module_sp = + process->ReadModuleFromMemory(file_spec, m_load_address); + + 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; + return true; } -bool -DynamicLoaderDarwinKernel::KextImageInfo::IsKernel () const -{ - return m_kernel_image == true; +bool DynamicLoaderDarwinKernel::KextImageInfo::IsKernel() const { + return m_kernel_image == true; } -void -DynamicLoaderDarwinKernel::KextImageInfo::SetIsKernel (bool is_kernel) -{ - m_kernel_image = is_kernel; +void DynamicLoaderDarwinKernel::KextImageInfo::SetIsKernel(bool is_kernel) { + m_kernel_image = is_kernel; } -bool -DynamicLoaderDarwinKernel::KextImageInfo::LoadImageUsingMemoryModule (Process *process) -{ - if (IsLoaded()) - return true; - +bool DynamicLoaderDarwinKernel::KextImageInfo::LoadImageUsingMemoryModule( + Process *process) { + if (IsLoaded()) + return true; - Target &target = process->GetTarget(); + 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)) - { - return false; - } + // 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(); + 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 (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 (module_spec.GetFileSpec().Exists()) - { - 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(), false); - 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 (!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 (module_spec.GetFileSpec().Exists()) { + 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 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, false); - } - } + } + + // 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(), false); + kext_bundle_module_spec.GetFileSpec() = kext_filespec; + platform_sp->GetSharedModule( + kext_bundle_module_spec, process, m_module_sp, + &target.GetExecutableSearchPaths(), NULL, NULL); } - } - - if (!m_module_sp && !IsKernel() && m_uuid.IsValid() && !m_name.empty()) - { + } + + // 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: Can't find binary/dSYM for %s (%s)\n", - m_name.c_str(), m_uuid.GetAsString().c_str()); + if (s) { + s->Printf("WARNING: Unable to locate kernel binary on the debugger " + "system.\n"); } + } } - 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 + // 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; } - else - m_module_sp.reset(); // UUID mismatch + } + if (uuid_match_ok) { + target.GetImages().AppendIfNeeded(m_module_sp); + if (IsKernel() && + target.GetExecutableModulePointer() != m_module_sp.get()) { + target.SetExecutableModule(m_module_sp, false); + } + } } + } - 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->GetHeaderAddress().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()); + 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; + } } - s->Flush (); + } + 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->GetHeaderAddress().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; + } + 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; +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::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 (); +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->GetHeaderAddress().GetLoadAddress(&m_process->GetTarget()); - addr_t file_address = kernel_object_file->GetHeaderAddress().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); +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->GetHeaderAddress().GetLoadAddress( + &m_process->GetTarget()); + addr_t file_address = + kernel_object_file->GetHeaderAddress().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.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(); - } + if (m_kernel.GetLoadAddress() != LLDB_INVALID_ADDRESS) { + if (!m_kernel.LoadImageUsingMemoryModule(m_process)) { + m_kernel.LoadImageAtFileAddress(m_process); + } } + + 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(); + } + } } //---------------------------------------------------------------------- @@ -1101,591 +1049,531 @@ DynamicLoaderDarwinKernel::LoadKernelModuleIfNeeded() // 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::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"); +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); + ReadAllKextSummaries(); - return GetStopWhenImagesChange(); + 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 -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(); - Error 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; - } + if (m_kext_summary_header_ptr_addr.IsValid()) { + const uint32_t addr_size = m_kernel.GetAddressByteSize(); + const ByteOrder byte_order = m_kernel.GetByteOrder(); + Error 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; + } + 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 +// 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 +// 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); +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); - if (!ReadKextSummaries (kext_summary_addr, count, kext_summaries)) - return false; + std::lock_guard<std::recursive_mutex> guard(m_mutex); - // 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 (!ReadKextSummaries(kext_summary_addr, count, kext_summaries)) + return false; - if (ignore) - { - number_of_old_kexts_being_removed--; - to_be_removed[old_kext] = 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; } - // 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 (add_this_one) - { - number_of_new_kexts_being_added++; - } + if (ignore) { + number_of_old_kexts_being_removed--; + to_be_removed[old_kext] = false; } - - 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); - } + } + + // 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 (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 (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; - 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] == true) - { - KextImageInfo &image_info = kext_summaries[new_kext]; - if (load_kexts) - { - if (!image_info.LoadImageUsingMemoryModule (m_process)) - { - image_info.LoadImageAtFileAddress (m_process); - } - } + 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] == true) { + 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); + 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 (image_info.GetModule() && + m_process->GetStopID() == image_info.GetProcessStopId()) + loaded_module_list.AppendIfNeeded(image_info.GetModule()); - if (s && load_kexts) - s->Printf ("."); + if (s && load_kexts) + s->Printf("."); - if (log) - kext_summaries[new_kext].PutToLog (log); - } - } - m_process->GetTarget().ModulesDidLoad (loaded_module_list); + if (log) + kext_summaries[new_kext].PutToLog(log); + } } - - 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); + 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 (); - } + if (s && load_kexts) { + s->Printf(" done.\n"); + s->Flush(); + } - return true; + 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); - Error 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 (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(); +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); + Error 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(extractor.GetData(&offset, 16), 16); + image_infos[i].SetUUID(uuid); + image_infos[i].SetLoadAddress(extractor.GetU64(&offset)); + image_infos[i].SetSize(extractor.GetU64(&offset)); } - return image_infos.size(); + 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; - } +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; + } + return false; } //---------------------------------------------------------------------- // Dump an image info structure to the file handle provided. //---------------------------------------------------------------------- -void -DynamicLoaderDarwinKernel::KextImageInfo::PutToLog (Log *log) const -{ - if (log == NULL) - return; - const uint8_t *u = (uint8_t *) m_uuid.GetBytes(); - - if (m_load_address == LLDB_INVALID_ADDRESS) - { - if (u) - { - log->Printf("\tuuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\" (UNLOADED)", - u[ 0], u[ 1], u[ 2], u[ 3], - u[ 4], u[ 5], u[ 6], u[ 7], - u[ 8], u[ 9], u[10], u[11], - u[12], u[13], u[14], u[15], - m_name.c_str()); - } - else - log->Printf("\tname=\"%s\" (UNLOADED)", m_name.c_str()); - } - else - { - if (u) - { - log->Printf("\taddr=0x%16.16" PRIx64 " size=0x%16.16" PRIx64 " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\"", - m_load_address, m_size, - u[ 0], u[ 1], u[ 2], u[ 3], u[ 4], u[ 5], u[ 6], u[ 7], - u[ 8], u[ 9], u[10], u[11], u[12], u[13], u[14], u[15], - m_name.c_str()); - } - else - { - log->Printf("\t[0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") name=\"%s\"", - m_load_address, m_load_address+m_size, m_name.c_str()); - } +void DynamicLoaderDarwinKernel::KextImageInfo::PutToLog(Log *log) const { + if (log == NULL) + return; + const uint8_t *u = (uint8_t *)m_uuid.GetBytes(); + + if (m_load_address == LLDB_INVALID_ADDRESS) { + if (u) { + log->Printf("\tuuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2." + "2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\" (UNLOADED)", + u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], u[8], u[9], + u[10], u[11], u[12], u[13], u[14], u[15], m_name.c_str()); + } else + log->Printf("\tname=\"%s\" (UNLOADED)", m_name.c_str()); + } else { + if (u) { + log->Printf("\taddr=0x%16.16" PRIx64 " size=0x%16.16" PRIx64 + " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-" + "%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\"", + m_load_address, m_size, u[0], u[1], u[2], u[3], u[4], u[5], + u[6], u[7], u[8], u[9], u[10], u[11], u[12], u[13], u[14], + u[15], m_name.c_str()); + } else { + log->Printf("\t[0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") name=\"%s\"", + m_load_address, m_load_address + m_size, m_name.c_str()); } + } } //---------------------------------------------------------------------- // 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::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::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(); - } +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; - } +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; +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; } -Error -DynamicLoaderDarwinKernel::CanLoadImage () -{ - Error error; - error.SetErrorString("always unsafe to load or unload shared libraries in the darwin kernel"); - return error; +Error DynamicLoaderDarwinKernel::CanLoadImage() { + Error 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::Initialize() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), CreateInstance, + DebuggerInitialize); } -void -DynamicLoaderDarwinKernel::Terminate() -{ - PluginManager::UnregisterPlugin (CreateInstance); +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); - } +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; +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."; +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(); +lldb_private::ConstString DynamicLoaderDarwinKernel::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -DynamicLoaderDarwinKernel::GetPluginVersion() -{ - return 1; -} +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; -} +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; +} |