ACPI!ACPIDetectPdoDevices函数中通过ACPI!ACPIBuildPdo函数创建设备和nt!PipEnumerateCompleted中创建设备节点
NTSTATUS
ACPIBuildPdo(
IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_EXTENSION DeviceExtension,
IN PDEVICE_OBJECT ParentPdoObject,
IN BOOLEAN CreateAsFilter
)
{
//
// First step is to create a device object
//
status =IoCreateDevice(
DriverObject,
0,
NULL,
FILE_DEVICE_ACPI,
FILE_AUTOGENERATED_DEVICE_NAME,
FALSE,
&newDeviceObject
);
0: kd> t
Breakpoint 82 hit
eax=89981b98 ebx=f743b620 ecx=89981a18 edx=00000000 esi=899c0d58 edi=899c0e78
eip=f73faa3a esp=f789a20c ebp=f789a250 iopl=0 nv up ei pl nz na po nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000202
ACPI!ACPIBuildPdo:
f73faa3a 55 push ebp
0: kd> kc
#
00 ACPI!ACPIBuildPdo
01 ACPI!ACPIDetectPdoDevices
02 ACPI!ACPIRootIrpQueryBusRelations
03 ACPI!ACPIRootIrpQueryDeviceRelations
04 ACPI!ACPIDispatchIrp
05 nt!IofCallDriver
06 nt!IopSynchronousCall
07 nt!IopQueryDeviceRelations
08 nt!PipEnumerateDevice
09 nt!PipProcessDevNodeTree
0a nt!PipDeviceActionWorker
0b nt!PipRequestDeviceAction
0c nt!IopInitializeBootDrivers
0d nt!IoInitSystem
0e nt!Phase1Initialization
0f nt!PspSystemThreadStartup
10 nt!KiThreadStartup
0: kd> dv
DriverObject = 0x89981f38 Driver "\Driver\ACPI"
DeviceExtension = 0x899c0d58
ParentPdoObject = 0x899c1de0 Device for "\Driver\ACPI_HAL"
CreateAsFilter = 0x00 ''
filterDeviceObject = 0xf73faa3a Device for {...}
newDeviceObject = 0x00000008
oldIrql = 0x89 ''
i = 0
0: kd> dx -r1 ((ACPI!_DEVICE_EXTENSION *)0x899c0d58)
((ACPI!_DEVICE_EXTENSION *)0x899c0d58) : 0x899c0d58 [Type: _DEVICE_EXTENSION *]
[+0x000] Flags : 0x40200002010108 [Type: unsigned __int64]
[+0x000] UFlags [Type: __unnamed]
[+0x008] Signature : 0x5f534750 [Type: unsigned long]
[+0x00c] DebugFlags : 0x0 [Type: unsigned long]
[+0x010] DispatchTable : 0x0 [Type: IRP_DISPATCH_TABLE *]
[+0x014] WorkContext [Type: WORK_QUEUE_CONTEXT]
[+0x014] Fdo [Type: _FDO_DEVICE_EXTENSION]
[+0x014] Filter [Type: _FILTER_DEVICE_EXTENSION]
[+0x014] Pdo [Type: _PDO_DEVICE_EXTENSION]
[+0x058] WorkQueue [Type: EXTENSION_WORKER]
[+0x058] Button [Type: BUTTON_EXTENSION]
[+0x058] Thermal [Type: THERMAL_EXTENSION]
[+0x058] LinkNode [Type: LINK_NODE_EXTENSION]
[+0x058] Dock [Type: DOCK_EXTENSION]
[+0x058] Processor [Type: _PROCESSOR_DEVICE_EXTENSION]
[+0x088] DeviceState : Stopped (0) [Type: _ACPI_DEVICE_STATE]
[+0x08c] PreviousState : Stopped (0) [Type: _ACPI_DEVICE_STATE]
[+0x090] PowerInfo [Type: _ACPI_POWER_INFO]
[+0x10c] DeviceID : 0x899c1148 : 0x41 [Type: unsigned char *]
[+0x10c] Address : 0x899c1148 [Type: unsigned long]
[+0x110] InstanceID : 0x0 [Type: unsigned char *]
[+0x114] ResourceList : 0x0 [Type: _CM_RESOURCE_LIST *]
[+0x118] PnpResourceList : 0x0 [Type: _ObjData *]
[+0x11c] OutstandingIrpCount : 1 [Type: long]
[+0x120] ReferenceCount : 83 [Type: long]
[+0x124] HibernatePathCount : 0 [Type: long]
[+0x128] RemoveEvent : 0x0 [Type: _KEVENT *]
[+0x12c] AcpiObject : 0x899affac [Type: _NSObj *]
[+0x130] DeviceObject : 0x0 [Type: _DEVICE_OBJECT *]
[+0x134] TargetDeviceObject : 0x0 [Type: _DEVICE_OBJECT *]
[+0x138] PhysicalDeviceObject : 0x0 [Type: _DEVICE_OBJECT *]
[+0x13c] ParentExtension : 0x89981a18 [Type: _DEVICE_EXTENSION *]
[+0x140] ChildDeviceList [Type: _LIST_ENTRY]
[+0x148] SiblingDeviceList [Type: _LIST_ENTRY]
[+0x150] EjectDeviceHead [Type: _LIST_ENTRY]
[+0x158] EjectDeviceList [Type: _LIST_ENTRY]
0: kd> db 0x899affac
899affac 4c ff 9a 89 ac 40 9b 89-f0 f0 9a 89 24 00 9b 89 L....@......$...
899affbc 50 43 49 30 30 f3 9a 89-4c ff 9a 89 00 00 06 00 PCI00...L.......
899affcc 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
899affdc 58 0d 9c 89 00 00 00 00-48 4f 52 47 34 00 00 00 X.......HORG4...
899affec 00 f0 9a 89 50 00 00 00-30 00 00 00 02 00 00 00 ....P...0.......
899afffc 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
899b000c 00 00 00 00 00 00 00 00-00 00 00 00 48 4e 53 4f ............HNSO
899b001c 44 00 00 00 00 f0 9a 89-64 a0 91 89 68 00 9b 89 D.......d...h...
0: kd> gu
eax=00000000 ebx=f743b620 ecx=00000000 edx=00000000 esi=899c0d58 edi=899c0e78
eip=f7400355 esp=f789a220 ebp=f789a250 iopl=0 nv up ei pl zr na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000246
ACPI!ACPIDetectPdoDevices+0x177:
f7400355 85c0 test eax,eax
0: kd> dx -r1 ((ACPI!_DEVICE_EXTENSION *)0x899c0d58)
((ACPI!_DEVICE_EXTENSION *)0x899c0d58) : 0x899c0d58 [Type: _DEVICE_EXTENSION *]
[+0x000] Flags : 0x40200002010020 [Type: unsigned __int64]
[+0x000] UFlags [Type: __unnamed]
[+0x008] Signature : 0x5f534750 [Type: unsigned long]
[+0x00c] DebugFlags : 0x0 [Type: unsigned long]
[+0x010] DispatchTable : 0xf743830c [Type: IRP_DISPATCH_TABLE *]
[+0x014] WorkContext [Type: WORK_QUEUE_CONTEXT]
[+0x014] Fdo [Type: _FDO_DEVICE_EXTENSION]
[+0x014] Filter [Type: _FILTER_DEVICE_EXTENSION]
[+0x014] Pdo [Type: _PDO_DEVICE_EXTENSION]
[+0x058] WorkQueue [Type: EXTENSION_WORKER]
[+0x058] Button [Type: BUTTON_EXTENSION]
[+0x058] Thermal [Type: THERMAL_EXTENSION]
[+0x058] LinkNode [Type: LINK_NODE_EXTENSION]
[+0x058] Dock [Type: DOCK_EXTENSION]
[+0x058] Processor [Type: _PROCESSOR_DEVICE_EXTENSION]
[+0x088] DeviceState : Stopped (0) [Type: _ACPI_DEVICE_STATE]
[+0x08c] PreviousState : Stopped (0) [Type: _ACPI_DEVICE_STATE]
[+0x090] PowerInfo [Type: _ACPI_POWER_INFO]
[+0x10c] DeviceID : 0x899c1148 : 0x41 [Type: unsigned char *]
[+0x10c] Address : 0x899c1148 [Type: unsigned long]
[+0x110] InstanceID : 0x0 [Type: unsigned char *]
[+0x114] ResourceList : 0x0 [Type: _CM_RESOURCE_LIST *]
[+0x118] PnpResourceList : 0x0 [Type: _ObjData *]
[+0x11c] OutstandingIrpCount : 1 [Type: long]
[+0x120] ReferenceCount : 84 [Type: long]
[+0x124] HibernatePathCount : 0 [Type: long]
[+0x128] RemoveEvent : 0x0 [Type: _KEVENT *]
[+0x12c] AcpiObject : 0x899affac [Type: _NSObj *]
[+0x130] DeviceObject : 0x899050e8 : Device for "\Driver\ACPI" [Type: _DEVICE_OBJECT *]
[+0x134] TargetDeviceObject : 0x0 [Type: _DEVICE_OBJECT *]
[+0x138] PhysicalDeviceObject : 0x899050e8 : Device for "\Driver\ACPI" [Type: _DEVICE_OBJECT *]
[+0x13c] ParentExtension : 0x89981a18 [Type: _DEVICE_EXTENSION *]
[+0x140] ChildDeviceList [Type: _LIST_ENTRY]
[+0x148] SiblingDeviceList [Type: _LIST_ENTRY]
[+0x150] EjectDeviceHead [Type: _LIST_ENTRY]
[+0x158] EjectDeviceList [Type: _LIST_ENTRY]
参考：什么时候建立设备对象的设备节点
0: kd> kc
#
00 nt!PipEnumerateCompleted
01 nt!PipProcessDevNodeTree
02 nt!PiProcessReenumeration
03 nt!PipDeviceActionWorker
04 nt!PipRequestDeviceAction
05 nt!PipAddDevicesToBootDriverWorker
06 nt!PipApplyFunctionToServiceInstances
07 nt!PipAddDevicesToBootDriver
08 nt!IopInitializeBootDrivers
09 nt!IoInitSystem
0a nt!Phase1Initialization
0b nt!PspSystemThreadStartup
0c nt!KiThreadStartup
allocationStatus =PipAllocateDeviceNode(
childDeviceObject,
&childDeviceNode);
if (childDeviceNode) {
//
// We've found or created a devnode for the PDO that the
// bus driver just enumerated.
//
childDeviceNode->Flags |= DNF_ENUMERATED;
//
// Mark the device object a bus enumerated device
//
childDeviceObject->Flags |= DO_BUS_ENUMERATED_DEVICE;
//
// Put this new device node at the head of the parent's list
// of children.
//
PpDevNodeInsertIntoTree(DeviceNode, childDeviceNode);
参考结束：
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