Software Diagnostics Library

It happens sometimes that during crash dump analysis or debugging session I forget exact structure name when I want to use it in dt WinDbg command. In this case wildcards help me: dt module!*, for example,

0:000> dt ntdll!*
          ntdll!LIST_ENTRY64
          ntdll!LIST_ENTRY32
          ntdll!_ULARGE_INTEGER
          ntdll!_LIST_ENTRY
          ntdll!_IMAGE_NT_HEADERS
          ntdll!_IMAGE_FILE_HEADER
          ntdll!_IMAGE_OPTIONAL_HEADER
          ntdll!_IMAGE_NT_HEADERS
          ntdll!_LARGE_INTEGER
          ntdll!_LUID
          ntdll!_KPRCB
          ntdll!_KTHREAD
          ntdll!_KPROCESSOR_STATE
          ntdll!_KSPIN_LOCK_QUEUE
          ntdll!_KNODE
          ntdll!_PP_LOOKASIDE_LIST
          ntdll!_KPRCB
          ntdll!_KDPC_DATA
          ntdll!_KEVENT
          ntdll!_KDPC
          ntdll!_SINGLE_LIST_ENTRY
          ntdll!_FX_SAVE_AREA
          ntdll!_PROCESSOR_POWER_STATE
          ntdll!_KPRCB
          ntdll!_KPCR
          ntdll!_NT_TIB
          ntdll!_EXCEPTION_REGISTRATION_RECORD
          ntdll!_KIDTENTRY
          ntdll!_KGDTENTRY
          ntdll!_KTSS
          ntdll!_KPCR
          ntdll!_KAPC
          ntdll!_SINGLE_LIST_ENTRY
          ntdll!_KDPC_IMPORTANCE
          ntdll!_KDPC
          ntdll!_DISPATCHER_HEADER
          ntdll!_KAPC_STATE
          ntdll!_KWAIT_BLOCK
          ntdll!_KGATE
          ntdll!_KQUEUE
          ntdll!_KTIMER
          ntdll!_KTRAP_FRAME
          ntdll!_KPROCESS
          ntdll!_KSEMAPHORE
          ntdll!_KTHREAD
          ntdll!_KSPIN_LOCK_QUEUE_NUMBER
          ntdll!_FAST_MUTEX
          ntdll!_SLIST_HEADER
          ntdll!_NPAGED_LOOKASIDE_LIST
          ntdll!_GENERAL_LOOKASIDE
          ntdll!_NPAGED_LOOKASIDE_LIST
          ntdll!_PAGED_LOOKASIDE_LIST
          ntdll!_PP_NPAGED_LOOKASIDE_NUMBER
          ntdll!_POOL_TYPE
          ntdll!_GENERAL_LOOKASIDE
          ntdll!_EX_RUNDOWN_REF
          ntdll!_EX_FAST_REF
          ntdll!_EX_PUSH_LOCK
          ntdll!_EX_PUSH_LOCK_WAIT_BLOCK
          ntdll!_EX_PUSH_LOCK_CACHE_AWARE
          ntdll!_ETHREAD
          ntdll!_TERMINATION_PORT
          ntdll!_CLIENT_ID
          ntdll!_PS_IMPERSONATION_INFORMATION
          ntdll!_DEVICE_OBJECT
          ntdll!_EPROCESS
          ntdll!_ETHREAD
          ntdll!_HANDLE_TABLE
          ntdll!_KGUARDED_MUTEX
          ntdll!_MM_AVL_TABLE
          ntdll!_EJOB
          ntdll!_EPROCESS_QUOTA_BLOCK
          ntdll!_PAGEFAULT_HISTORY
          ntdll!_HARDWARE_PTE_X86
          ntdll!_PEB
          ntdll!_SE_AUDIT_PROCESS_CREATION_INFO
          ntdll!_MMSUPPORT
          ntdll!_EPROCESS
          ntdll!_OBJECT_HEADER
          ntdll!_OBJECT_TYPE
          ntdll!_OBJECT_CREATE_INFORMATION
          ntdll!_QUAD
          ntdll!_OBJECT_HEADER
          ntdll!_OBJECT_HEADER_QUOTA_INFO
          ntdll!_OBJECT_HEADER_HANDLE_INFO
          ntdll!_OBJECT_HANDLE_COUNT_DATABASE
          ntdll!_OBJECT_HANDLE_COUNT_ENTRY
          ntdll!_OBJECT_HEADER_HANDLE_INFO
          ntdll!_OBJECT_HEADER_NAME_INFO
          ntdll!_OBJECT_DIRECTORY
          ntdll!_UNICODE_STRING
          ntdll!_OBJECT_HEADER_NAME_INFO
          ntdll!_OBJECT_HEADER_CREATOR_INFO
          ntdll!_OBJECT_ATTRIBUTES
          ntdll!_ERESOURCE
          ntdll!_OBJECT_TYPE_INITIALIZER
          ntdll!_OBJECT_TYPE
          ntdll!_OBJECT_HANDLE_INFORMATION
          ntdll!_PERFINFO_GROUPMASK
          ntdll!_KGUARDED_MUTEX
          ntdll!_DISPATCHER_HEADER
          ntdll!_PF_SCENARIO_TYPE
          ntdll!_HANDLE_TRACE_DEBUG_INFO
          ntdll!_HANDLE_TABLE
          ntdll!_KWAIT_BLOCK
          ntdll!_MMSUPPORT_FLAGS
          ntdll!_MMWSL
          ntdll!_MMSUPPORT
          ntdll!_EPROCESS_QUOTA_ENTRY
          ntdll!_EPROCESS_QUOTA_BLOCK
          ntdll!_UNICODE_STRING
          ntdll!_NT_TIB
          ntdll!_PS_JOB_TOKEN_FILTER
          ntdll!_IO_COUNTERS
          ntdll!_EJOB
          ntdll!_PEB_LDR_DATA
          ntdll!_RTL_USER_PROCESS_PARAMETERS
          ntdll!_RTL_CRITICAL_SECTION
          ntdll!_PEB_FREE_BLOCK
          ntdll!_ACTIVATION_CONTEXT_DATA
          ntdll!_ASSEMBLY_STORAGE_MAP
          ntdll!_PEB
          ntdll!_KGATE
          ntdll!_IMAGE_FILE_HEADER
          ntdll!_RTL_STACK_TRACE_ENTRY
          ntdll!_PEB_FREE_BLOCK
          ntdll!_KSPIN_LOCK_QUEUE
          ntdll!_PP_LOOKASIDE_LIST
          ntdll!_KEXECUTE_OPTIONS
          ntdll!_KPROCESS
          ntdll!_PEB_LDR_DATA
          ntdll!_DPH_BLOCK_INFORMATION
          ntdll!_SECURITY_IMPERSONATION_LEVEL
          ntdll!_PS_IMPERSONATION_INFORMATION
          ntdll!_EPROCESS_QUOTA_ENTRY
          ntdll!_FNSAVE_FORMAT
          ntdll!_FX_SAVE_AREA
          ntdll!PROCESSOR_IDLE_TIMES
          ntdll!PROCESSOR_PERF_STATE
          ntdll!_PROCESSOR_POWER_STATE
          ntdll!_IO_COUNTERS
          ntdll!_KiIoAccessMap
          ntdll!_KTSS
          ntdll!_KIDTENTRY
          ntdll!_MMSUPPORT_FLAGS
          ntdll!_HEAP
          ntdll!_HEAP_ENTRY
          ntdll!_HEAP_TAG_ENTRY
          ntdll!_HEAP_UCR_SEGMENT
          ntdll!_HEAP_UNCOMMMTTED_RANGE
          ntdll!_HEAP_SEGMENT
          ntdll!_HEAP_PSEUDO_TAG_ENTRY
          ntdll!_HEAP_LOCK
          ntdll!_HEAP
          ntdll!_TERMINATION_PORT
          ntdll!LSA_FOREST_TRUST_RECORD_TYPE
          ntdll!_HEAP_UNCOMMMTTED_RANGE
          ntdll!_OBJECT_HANDLE_COUNT_DATABASE
          ntdll!_FNSAVE_FORMAT
          ntdll!PROCESSOR_PERF_STATE
          ntdll!PROCESSOR_IDLE_TIMES
          ntdll!_HANDLE_TRACE_DB_ENTRY
          ntdll!_HANDLE_TRACE_DEBUG_INFO
          ntdll!_PROCESS_WS_WATCH_INFORMATION
          ntdll!_PAGEFAULT_HISTORY
          ntdll!_SECURITY_QUALITY_OF_SERVICE
          ntdll!_OBJECT_CREATE_INFORMATION
          ntdll!_MMADDRESS_NODE
          ntdll!_MM_AVL_TABLE
          ntdll!_HARDWARE_PTE_X86
          ntdll!_HEAP_ENTRY
          ntdll!_GENERIC_MAPPING
          ntdll!_OBJECT_DUMP_CONTROL
          ntdll!_OB_OPEN_REASON
          ntdll!_ACCESS_STATE
          ntdll!_SECURITY_OPERATION_CODE
          ntdll!_OBJECT_NAME_INFORMATION
          ntdll!_OBJECT_TYPE_INITIALIZER
          ntdll!_LARGE_INTEGER
          ntdll!_RTL_TRACE_BLOCK
          ntdll!_HEAP_UCR_SEGMENT
          ntdll!_KEXECUTE_OPTIONS
          ntdll!_OWNER_ENTRY
          ntdll!_ERESOURCE
          ntdll!_GENERIC_MAPPING
          ntdll!_SID_AND_ATTRIBUTES
          ntdll!_LUID_AND_ATTRIBUTES
          ntdll!_PS_JOB_TOKEN_FILTER
          ntdll!_MEMORY_CACHING_TYPE_ORIG
          ntdll!_KiIoAccessMap
          ntdll!_EXCEPTION_DISPOSITION
          ntdll!_EXCEPTION_RECORD
          ntdll!_CONTEXT
          ntdll!_EXCEPTION_REGISTRATION_RECORD
          ntdll!_DRIVER_OBJECT
          ntdll!_IRP
          ntdll!_IO_TIMER
          ntdll!_VPB
          ntdll!_WAIT_CONTEXT_BLOCK
          ntdll!_KDEVICE_QUEUE
          ntdll!_DEVOBJ_EXTENSION
          ntdll!_DEVICE_OBJECT
          ntdll!_PROCESS_WS_WATCH_INFORMATION
          ntdll!_SECURITY_QUALITY_OF_SERVICE
          ntdll!_FLOATING_SAVE_AREA
          ntdll!_CONTEXT
          ntdll!_IMAGE_DATA_DIRECTORY
          ntdll!_IMAGE_OPTIONAL_HEADER
          ntdll!_KUSER_SHARED_DATA
          ntdll!_KSYSTEM_TIME
          ntdll!_NT_PRODUCT_TYPE
          ntdll!_ALTERNATIVE_ARCHITECTURE_TYPE
          ntdll!_KUSER_SHARED_DATA
          ntdll!_QUAD
          ntdll!_KAPC_STATE
          ntdll!_MODE
          ntdll!_HEAP_PSEUDO_TAG_ENTRY
          ntdll!_RTL_CRITICAL_SECTION_DEBUG
          ntdll!_RTL_CRITICAL_SECTION
          ntdll!_HEAP_SEGMENT
          ntdll!_KTRAP_FRAME
          ntdll!_KGDTENTRY
          ntdll!_KDEVICE_QUEUE_ENTRY
          ntdll!_IO_ALLOCATION_ACTION
          ntdll!_WAIT_CONTEXT_BLOCK
          ntdll!_KTIMER
          ntdll!_MDL
          ntdll!_IO_STATUS_BLOCK
          ntdll!_IO_STACK_LOCATION
          ntdll!_FILE_OBJECT
          ntdll!_IRP
          ntdll!_VPB
          ntdll!_KOBJECTS
          ntdll!_KSEMAPHORE
          ntdll!_MMADDRESS_NODE
          ntdll!_CURDIR
          ntdll!_RTL_DRIVE_LETTER_CURDIR
          ntdll!_RTL_USER_PROCESS_PARAMETERS
          ntdll!_OWNER_ENTRY
          ntdll!_SE_AUDIT_PROCESS_CREATION_INFO
          ntdll!_OBJECT_HANDLE_COUNT_ENTRY
          ntdll!_CLIENT_ID
          ntdll!_RTL_TRACE_DATABASE
          ntdll!_RTL_TRACE_SEGMENT
          ntdll!_RTL_TRACE_DATABASE
          ntdll!_HEAP_LOCK
          ntdll!_HANDLE_TRACE_DB_ENTRY
          ntdll!ReplacesCorHdrNumericDefines
          ntdll!_MEMORY_TYPE
          ntdll!_IO_TIMER
          ntdll!_FXSAVE_FORMAT
          ntdll!_OBJECT_DIRECTORY_ENTRY
          ntdll!_DEVICE_MAP
          ntdll!_OBJECT_DIRECTORY
          ntdll!_STACK_TRACE_DATABASE
          ntdll!_KDPC_DATA
          ntdll!_STRING
          ntdll!_RTL_DRIVE_LETTER_CURDIR
          ntdll!_SID_AND_ATTRIBUTES
          ntdll!_DPH_HEAP_ROOT
          ntdll!_DPH_HEAP_BLOCK
          ntdll!_RTL_AVL_TABLE
          ntdll!_DPH_HEAP_ROOT
          ntdll!_DEVICE_OBJECT_POWER_EXTENSION
          ntdll!_DEVOBJ_EXTENSION
          ntdll!_FLOATING_SAVE_AREA
          ntdll!_KSYSTEM_TIME
          ntdll!_KQUEUE
          ntdll!_RTL_BALANCED_LINKS
          ntdll!_RTL_GENERIC_COMPARE_RESULTS
          ntdll!_RTL_AVL_TABLE
          ntdll!_HEAP_TAG_ENTRY
          ntdll!_RTL_CRITICAL_SECTION_DEBUG
          ntdll!_MDL
          ntdll!_DPH_HEAP_BLOCK
          ntdll!_PS_QUOTA_TYPE
          ntdll!_flags
          ntdll!_KNODE
          ntdll!_LDR_DATA_TABLE_ENTRY
          ntdll!_ACTIVATION_CONTEXT
          ntdll!_LDR_DATA_TABLE_ENTRY
          ntdll!_TEB
          ntdll!_ACTIVATION_CONTEXT_STACK
          ntdll!_GDI_TEB_BATCH
          ntdll!_TEB_ACTIVE_FRAME
          ntdll!_TEB
          ntdll!_KEVENT
          ntdll!_IO_STATUS_BLOCK
          ntdll!_RTL_TRACE_SEGMENT
          ntdll!_SECURITY_SUBJECT_CONTEXT
          ntdll!_INITIAL_PRIVILEGE_SET
          ntdll!_PRIVILEGE_SET
          ntdll!_ACCESS_STATE
          ntdll!_KSPECIAL_REGISTERS
          ntdll!_KPROCESSOR_STATE
          ntdll!_STRING
          ntdll!_flags
          ntdll!_REG_NOTIFY_CLASS
          ntdll!_OBJECT_DUMP_CONTROL
          ntdll!_SECURITY_SUBJECT_CONTEXT
          ntdll!_RTL_ACTIVATION_CONTEXT_STACK_FRAME
          ntdll!_ACTIVATION_CONTEXT_STACK
          ntdll!_MMSYSTEM_PTE_POOL_TYPE
          ntdll!_KDEVICE_QUEUE
          ntdll!_LUID_AND_ATTRIBUTES
          ntdll!_EXCEPTION_RECORD
          ntdll!_INITIAL_PRIVILEGE_SET
          ntdll!_TEB_ACTIVE_FRAME_CONTEXT
          ntdll!_TEB_ACTIVE_FRAME
          ntdll!_OBJECT_NAME_INFORMATION
          ntdll!_SECTION_OBJECT_POINTERS
          ntdll!_IO_COMPLETION_CONTEXT
          ntdll!_FILE_OBJECT
          ntdll!_IO_COMPLETION_CONTEXT
          ntdll!_DRIVER_EXTENSION
          ntdll!_FAST_IO_DISPATCH
          ntdll!_DRIVER_OBJECT
          ntdll!_IO_CLIENT_EXTENSION
          ntdll!_FS_FILTER_CALLBACKS
          ntdll!_DRIVER_EXTENSION
          ntdll!_TEB_ACTIVE_FRAME_CONTEXT
          ntdll!_IMAGE_DATA_DIRECTORY
          ntdll!_CURDIR
          ntdll!_GDI_TEB_BATCH
          ntdll!_RTL_BALANCED_LINKS
          ntdll!_KDEVICE_QUEUE_ENTRY
          ntdll!_SECTION_OBJECT_POINTERS
          ntdll!_IO_CLIENT_EXTENSION
          ntdll!_IO_SECURITY_CONTEXT
          ntdll!_NAMED_PIPE_CREATE_PARAMETERS
          ntdll!_MAILSLOT_CREATE_PARAMETERS
          ntdll!_FILE_INFORMATION_CLASS
          ntdll!_FSINFOCLASS
          ntdll!_SCSI_REQUEST_BLOCK
          ntdll!_FILE_GET_QUOTA_INFORMATION
          ntdll!_DEVICE_RELATION_TYPE
          ntdll!_GUID
          ntdll!_INTERFACE
          ntdll!_DEVICE_CAPABILITIES
          ntdll!_IO_RESOURCE_REQUIREMENTS_LIST
          ntdll!BUS_QUERY_ID_TYPE
          ntdll!DEVICE_TEXT_TYPE
          ntdll!_DEVICE_USAGE_NOTIFICATION_TYPE
          ntdll!_SYSTEM_POWER_STATE
          ntdll!_POWER_SEQUENCE
          ntdll!_POWER_STATE_TYPE
          ntdll!_POWER_STATE
          ntdll!POWER_ACTION
          ntdll!_CM_RESOURCE_LIST
          ntdll!_IO_STACK_LOCATION
          ntdll!_INTERFACE
          ntdll!_DEVICE_POWER_STATE
          ntdll!_POWER_STATE
          ntdll!_FS_FILTER_CALLBACK_DATA
          ntdll!_FS_FILTER_CALLBACKS
          ntdll!_DEVICE_MAP
          ntdll!_INTERFACE_TYPE
          ntdll!_IO_RESOURCE_LIST
          ntdll!_IO_RESOURCE_REQUIREMENTS_LIST
          ntdll!_SID
          ntdll!_FILE_GET_QUOTA_INFORMATION
          ntdll!_FS_FILTER_PARAMETERS
          ntdll!_FS_FILTER_CALLBACK_DATA
          ntdll!_FILE_BASIC_INFORMATION
          ntdll!_FILE_STANDARD_INFORMATION
          ntdll!_FILE_NETWORK_OPEN_INFORMATION
          ntdll!_COMPRESSED_DATA_INFO
          ntdll!_FAST_IO_DISPATCH
          ntdll!_OBJECT_DIRECTORY_ENTRY
          ntdll!_FILE_BASIC_INFORMATION
          ntdll!_PRIVILEGE_SET
          ntdll!_IO_SECURITY_CONTEXT
          ntdll!_DESCRIPTOR
          ntdll!_KSPECIAL_REGISTERS
          ntdll!_RTL_ACTIVATION_CONTEXT_STACK_FRAME
          ntdll!_MAILSLOT_CREATE_PARAMETERS
          ntdll!_NAMED_PIPE_CREATE_PARAMETERS
          ntdll!_IO_RESOURCE_DESCRIPTOR
          ntdll!_IO_RESOURCE_LIST
          ntdll!_FILE_NETWORK_OPEN_INFORMATION
          ntdll!_CM_FULL_RESOURCE_DESCRIPTOR
          ntdll!_CM_RESOURCE_LIST
          ntdll!_POWER_SEQUENCE
          ntdll!_IO_RESOURCE_DESCRIPTOR
          ntdll!_FS_FILTER_SECTION_SYNC_TYPE
          ntdll!_FS_FILTER_PARAMETERS
          ntdll!_COMPRESSED_DATA_INFO
          ntdll!_FILE_STANDARD_INFORMATION
          ntdll!_DESCRIPTOR
          ntdll!_GUID
          ntdll!_SID_IDENTIFIER_AUTHORITY
          ntdll!_SID
          ntdll!_SID_IDENTIFIER_AUTHORITY
          ntdll!_CM_PARTIAL_RESOURCE_LIST
          ntdll!_CM_FULL_RESOURCE_DESCRIPTOR
          ntdll!_DEVICE_CAPABILITIES
          ntdll!_CM_PARTIAL_RESOURCE_DESCRIPTOR
          ntdll!_CM_PARTIAL_RESOURCE_LIST
          ntdll!_CM_PARTIAL_RESOURCE_DESCRIPTOR
          ntdll!__unnamed

You might have noticed that many structures are listed twice in the output. Actually all of them appear twice and there are many __unnamed (I edited the output before posting to save space). I was wondering why they are listed twice and after some research I found that Visual Studio contains DIA SDK (Debug Interface Access SDK) and you can build DIA2Dump sample to dump PDB files. Unfortunately this tool displays them twice too without any hints:

UDT            : LIST_ENTRY32
Data           :   this+0×0, Member, Type: unsigned long, Flink
Data           :   this+0×4, Member, Type: unsigned long, Blink
UDT            : LIST_ENTRY32
Data           :   this+0×0, Member, Type: unsigned long, Flink
Data           :   this+0×4, Member, Type: unsigned long, Blink

__unnamed datatype is for unions, for example:

0:000> dt -r _ULARGE_INTEGER
   +0x000 LowPart          : Uint4B
   +0x004 HighPart         : Uint4B
   +0x000 u                : __unnamed
      +0×000 LowPart          : Uint4B
      +0×004 HighPart         : Uint4B
   +0×000 QuadPart         : Uint8B

Here’s the definition taken from winnt.h:

- Dmitry Vostokov -

This entry was posted on Saturday, February 10th, 2007 at 6:48 pm and is filed under Crash Dump Analysis, Debugging. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.