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\_PIC.phGPIC的实现和ACPI!Method函数分析

news 2026/3/26 20:51:54


\_PIC.phGPIC的实现和ACPI!Method函数分析

第一部分：
0: kd> dx -id 0,0,899a2278 -r1 ((ACPI!_List *)0x899af394)
((ACPI!_List *)0x899af394) : 0x899af394 [Type: _List *]
[+0x000] plistPrev : 0x899af2d0 [Type: _List *]
[+0x004] plistNext : 0x899af3d8 [Type: _List *]
0: kd> db 0x899af3d8
899af3d8 94 f3 9a 89 68 f0 9a 89-24 f0 9a 89 00 00 00 00 ....h...$.......
899af3e8 5f 50 49 43 30 f3 9a 89-94 f3 9a 89 00 00 08 00 _PIC0...........
899af3f8 00 00 00 00 00 00 00 00-17 00 00 00 1c f4 9a 89 ................
899af408 00 00 00 00 00 00 00 00-48 4d 45 54 24 00 00 00 ........HMET$...
899af418 00 f0 9a 89 00 00 00 00-00 00 00 00 00 00 00 00 ................
899af428 00 00 00 00 01 70 68 47-50 49 43 00 48 4f 52 47 .....phGPIC.HORG
899af438 34 00 00 00 00 f0 9a 89-39 0e ab f7 84 00 00 00 4.......9.......
899af448 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................


0: kd> dt _nsobj 0x899af3d8
ACPI!_NSObj
+0x000 list : _List
+0x008 pnsParent : 0x899af024 _NSObj
+0x00c pnsFirstChild : (null)
+0x010 dwNameSeg : 0x4349505f
+0x014 hOwner : 0x899af330 Void
+0x018 pnsOwnedNext : 0x899af394 _NSObj
+0x01c ObjData : _ObjData
+0x030 Context : (null)
+0x034 dwRefCount : 0
0: kd> dx -id 0,0,899a2278 -r1 (*((ACPI!_ObjData *)0x899af3f4))
(*((ACPI!_ObjData *)0x899af3f4)) [Type: _ObjData]
[+0x000] dwfData : 0x0 [Type: unsigned short]
[+0x002] dwDataType : 0x8 [Type: unsigned short] OBJTYPE_METHOD=0x8
[+0x004] dwRefCount : 0x0 [Type: unsigned long]
[+0x004] pdataBase : 0x0 [Type: _ObjData *]
[+0x008] dwDataValue : 0x0 [Type: unsigned long]
[+0x008] uipDataValue : 0x0 [Type: unsigned long]
[+0x008] pnsAlias : 0x0 [Type: _NSObj *]
[+0x008] pdataAlias : 0x0 [Type: _ObjData *]
[+0x008] powner : 0x0 [Type: void *]
[+0x00c] dwDataLen : 0x17 [Type: unsigned long]
[+0x010] pbDataBuff : 0x899af41c : 0x0 [Type: unsigned char *]
0: kd> db 0x899af3d8
899af3d8 94 f3 9a 89 68 f0 9a 89-24 f0 9a 89 00 00 00 00 ....h...$.......
899af3e8 5f 50 49 43 30 f3 9a 89-94 f3 9a 89 00 00 08 00 _PIC0...........
899af3f8 00 00 00 00 00 00 00 00-17 00 00 00 1c f4 9a 89 ................
899af408 00 00 00 00 00 00 00 00-48 4d 45 54 24 00 00 00 ........HMET$...
899af418 00 f0 9a 89 00 00 00 00-00 00 00 00 00 00 00 00 ................
899af428 00 00 00 00 01 70 68 47-50 49 43 00 48 4f 52 47 .....phGPIC.HORG
899af438 34 00 00 00 00 f0 9a 89-39 0e ab f7 84 00 00 00 4.......9.......
899af448 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................


0: kd> dt _methodobj 0x899af41c
ACPI!_MethodObj
+0x000 Mutex : _MutexObj
+0x010 bMethodFlags : 0x1 ''
+0x011 abCodeBuff : [1] "p"
0: kd> db 0x899af41c
899af41c 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
899af42c 01 70 68 47 50 49 4300-48 4f 52 47 34 00 00 00 .phGPIC.HORG4...


第二部分：
0: kd> t
eax=f742162e ebx=89dee000 ecx=00000001 edx=00000001 esi=89defed8 edi=00000001
eip=f742162e esp=f789a118 ebp=f789a130 iopl=0 nv up ei ng nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000286
ACPI!Method:
f742162e 55 push ebp
0: kd> kc
#
00 ACPI!Method
01 ACPI!ParseTerm
02 ACPI!RunContext
03 ACPI!InsertReadyQueue
04 ACPI!RestartContext
05 ACPI!SyncLoadDDB
06 ACPI!AMLILoadDDB
07 ACPI!ACPIInitializeDDB
08 ACPI!ACPIInitializeDDBs
09 ACPI!ACPIInitialize
0a ACPI!ACPIInitStartACPI
0b ACPI!ACPIRootIrpStartDevice
0c ACPI!ACPIDispatchIrp
0d nt!IofCallDriver
0e nt!IopSynchronousCall
0f nt!IopStartDevice
10 nt!PipProcessStartPhase1
11 nt!PipProcessDevNodeTree
12 nt!PipDeviceActionWorker
13 nt!PipRequestDeviceAction
14 nt!IopInitializeBootDrivers
15 nt!IoInitSystem
16 nt!Phase1Initialization
17 nt!PspSystemThreadStartup
18 nt!KiThreadStartup

if ((rc = CreateNameSpaceObject(pctxt->pheapCurrent,
(PSZ)pterm->pdataArgs[0].pbDataBuff,
pctxt->pnsScope, pctxt->powner,
&pterm->pnsObj, 0)) == STATUS_SUCCESS)
{

0: kd> t
Breakpoint 47 hit
eax=89da334c ebx=89dee000 ecx=00000001 edx=00000001 esi=89defed8 edi=89defef8
eip=f741dc18 esp=f789a0e0 ebp=f789a114 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!CreateNameSpaceObject:
f741dc18 55 push ebp
0: kd> dv
pheap = 0x89da3000
pszName = 0x89da3380 "\_PIC" 名字
pnsScope = 0x89da3024 目录路径
powner = 0x89da3330 所有者
ppns = 0x89defef8
dwfNS = 0
pns = 0x00000008
rc = 0n-146678760
pnsParent = 0x89da3380
iLen = 0n-1982189532

else
{
PMETHODOBJ pm = (PMETHODOBJ)pterm->pnsObj->ObjData.pbDataBuff;

#ifdef DEBUGGER
AddObjSymbol(pm->abCodeBuff, pterm->pnsObj);
#endif
MEMZERO(pterm->pnsObj->ObjData.pbDataBuff,
pterm->pnsObj->ObjData.dwDataLen);
pm->bMethodFlags = *(pctxt->pbOp - 1);
MEMCPY(&pm->abCodeBuff, pctxt->pbOp, pterm->pbOpEnd - pctxt->pbOp);
pctxt->pbOp = pterm->pbOpEnd;
}


第三部分：

NTSTATUS LOCAL Method(PCTXT pctxt, PTERM pterm)
{
TRACENAME("METHOD")
NTSTATUS rc = STATUS_SUCCESS;

ENTER(2, ("Method(pctxt=%x,pbOp=%x,pterm=%x)\n",
pctxt, pctxt->pbOp, pterm));

if ((rc = CreateNameSpaceObject(pctxt->pheapCurrent,
(PSZ)pterm->pdataArgs[0].pbDataBuff,
pctxt->pnsScope, pctxt->powner,
&pterm->pnsObj, 0)) == STATUS_SUCCESS)
{
pterm->pnsObj->ObjData.dwDataType = OBJTYPE_METHOD;
pterm->pnsObj->ObjData.dwDataLen = (ULONG)(FIELD_OFFSET(METHODOBJ,
abCodeBuff) +
pterm->pbOpEnd -
pctxt->pbOp);

if ((pterm->pnsObj->ObjData.pbDataBuff =
NEWMEOBJ(pctxt->pheapCurrent, pterm->pnsObj->ObjData.dwDataLen))
== NULL)
{
rc = AMLI_LOGERR(AMLIERR_OUT_OF_MEM,
("Method: failed to allocate method buffer"));
}
else
{
PMETHODOBJ pm = (PMETHODOBJ)pterm->pnsObj->ObjData.pbDataBuff;

#ifdef DEBUGGER
AddObjSymbol(pm->abCodeBuff, pterm->pnsObj);
#endif
MEMZERO(pterm->pnsObj->ObjData.pbDataBuff,
pterm->pnsObj->ObjData.dwDataLen);
pm->bMethodFlags = *(pctxt->pbOp - 1);
MEMCPY(&pm->abCodeBuff, pctxt->pbOp, pterm->pbOpEnd - pctxt->pbOp);
pctxt->pbOp = pterm->pbOpEnd;
}
}

EXIT(2, ("Method=%x (pnsObj=%x)\n", rc, pterm->pnsObj));
return rc;
} //Method

0: kd> dx -id 0,0,899a2278 -r1 ((ACPI!_List *)0x899af2d0)
((ACPI!_List *)0x899af2d0) : 0x899af2d0 [Type: _List *]
[+0x000] plistPrev : 0x899af268 [Type: _List *]
[+0x004] plistNext : 0x899af394 [Type: _List *]
0: kd> db 0x899af394
899af394 d0 f2 9a 89 d8 f3 9a 89-24 f0 9a 89 00 00 00 00 ........$.......
899af3a4 47 50 49 43 30 f3 9a 89-00 00 00 00 00 00 01 00 GPIC0...........
899af3b4 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
899af3c4 00 00 00 00 00 00 00 00-48 4e 53 4f 44 00 00 00 ........HNSOD...
899af3d4 00 f0 9a 89 94 f3 9a 89-68 f0 9a 89 24 f0 9a 89 ........h...$...
899af3e4 00 00 00 00 5f 50 49 43-30 f3 9a 89 94 f3 9a 89 ...._PIC0.......
899af3f4 00 00 08 00 00 00 00 00-00 00 00 00 17 00 00 00 ................
899af404 1c f4 9a 89 00 00 00 00-00 00 00 00 48 4d 45 54 ............HMET
0: kd> dt _nsobj 0x899af394
ACPI!_NSObj
+0x000 list : _List
+0x008 pnsParent : 0x899af024 _NSObj
+0x00c pnsFirstChild : (null)
+0x010 dwNameSeg : 0x43495047
+0x014 hOwner : 0x899af330 Void
+0x018 pnsOwnedNext : (null)
+0x01c ObjData : _ObjData
+0x030 Context : (null)
+0x034 dwRefCount : 0

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