214 lines
4 KiB
C
214 lines
4 KiB
C
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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devext.c
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Abstract:
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This file contains the generic routines
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for debugging NBF device contexts.
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Author:
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Chaitanya Kodeboyina
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Environment:
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User Mode
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include "devext.h"
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//
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// Exported Functions
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//
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DECLARE_API( devs )
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/*++
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Routine Description:
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Print a list of devices on the NBF's
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devices list [@ nbf!NbfDeviceList ]
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Arguments:
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args - Detail of debug information
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Return Value:
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None
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--*/
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{
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DEVICE_CONTEXT DeviceContext;
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PLIST_ENTRY NbfDeviceLPtr;
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LIST_ENTRY NbfDeviceList;
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PLIST_ENTRY p, q;
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ULONG proxyPtr;
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ULONG numDevs;
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ULONG bytesRead;
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ULONG printDetail;
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// Get the detail of debug information needed
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printDetail = SUMM_INFO;
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if (*args)
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{
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sscanf(args, "%lu", &printDetail);
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}
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// Get the address corresponding to symbol
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proxyPtr = GetLocation("nbf!NbfDeviceList");
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// Read the list entry of NBF devices
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if (!ReadMemory(proxyPtr, &NbfDeviceList, sizeof(LIST_ENTRY), &bytesRead))
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{
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dprintf("%s @ %08x: Could not read structure\n",
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"NbfDeviceList", proxyPtr);
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return;
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}
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// Traverse the doubly linked list
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dprintf("Devices:\n");
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NbfDeviceLPtr = (PLIST_ENTRY)proxyPtr;
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numDevs = 0;
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p = NbfDeviceList.Flink;
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while (p != NbfDeviceLPtr)
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{
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// Another Device
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numDevs++;
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// Device Context Ptr
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proxyPtr = (ULONG) CONTAINING_RECORD (p, DEVICE_CONTEXT, Linkage);
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// Get Device Context
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if (ReadDeviceContext(&DeviceContext, proxyPtr) != 0)
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break;
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// Print the Context
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PrintDeviceContext(&DeviceContext, proxyPtr, printDetail);
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// Go to the next one
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p = DeviceContext.Linkage.Flink;
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// Free Device Context
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FreeDeviceContext(&DeviceContext);
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}
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if (p == NbfDeviceLPtr)
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{
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dprintf("Number of Devices: %lu\n", numDevs);
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}
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}
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DECLARE_API( dev )
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/*++
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Routine Description:
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Print the device context at an addr
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Arguments:
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args -
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Address of the device context
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Detail of debug information
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Return Value:
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None
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--*/
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{
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DEVICE_CONTEXT DeviceContext;
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ULONG printDetail;
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ULONG proxyPtr;
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// Get the detail of debug information needed
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printDetail = NORM_SHAL;
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if (*args)
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{
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sscanf(args, "%x %lu", &proxyPtr, &printDetail);
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}
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// Get Device Context
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if (ReadDeviceContext(&DeviceContext, proxyPtr) != 0)
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return;
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// Print the Context
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PrintDeviceContext(&DeviceContext, proxyPtr, printDetail);
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}
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//
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// Helper Functions
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//
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UINT
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ReadDeviceContext(PDEVICE_CONTEXT pDevCon, ULONG proxyPtr)
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{
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ULONG bytesRead;
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// Read the current device context
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if (!ReadMemory(proxyPtr, pDevCon, sizeof(DEVICE_CONTEXT), &bytesRead))
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{
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dprintf("%s @ %08x: Could not read structure\n",
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"DeviceContext", proxyPtr);
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return -1;
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}
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return 0;
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}
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UINT
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PrintDeviceContext(PDEVICE_CONTEXT pDevCon, ULONG proxyPtr, ULONG printDetail)
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{
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// Is this a valid NBF device context ?
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if (pDevCon->Type != NBF_DEVICE_CONTEXT_SIGNATURE)
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{
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dprintf("%s @ %08x: Could not match signature\n",
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"DeviceContext", proxyPtr);
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return -1;
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}
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// What detail do we have to print at ?
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if (printDetail > MAX_DETAIL)
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printDetail = MAX_DETAIL;
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// Print Information at reqd detail
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FieldInDeviceContext(proxyPtr, NULL, printDetail);
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return 0;
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}
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VOID
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FieldInDeviceContext(ULONG structAddr, CHAR *fieldName, ULONG printDetail)
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{
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DEVICE_CONTEXT DeviceContext;
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if (ReadDeviceContext(&DeviceContext, structAddr) == 0)
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{
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PrintFields(&DeviceContext, structAddr, fieldName, printDetail, &DeviceContextInfo);
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}
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}
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UINT
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FreeDeviceContext(PDEVICE_CONTEXT pDevCon)
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{
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return 0;
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}
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