454 lines
11 KiB
C++
454 lines
11 KiB
C++
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/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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kdexts.c
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Abstract:
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This file contains the generic routines and initialization code
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for the kernel debugger extensions dll.
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include <ntverp.h>
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#include <string.h>
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//
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// globals
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//
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WINDBG_EXTENSION_APIS ExtensionApis;
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ULONG64 STeip;
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ULONG64 STebp;
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ULONG64 STesp;
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DBGKD_GET_VERSION64 KernelVersionPacket;
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KDDEBUGGER_DATA64 KdDebuggerData;
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ULONG64 EXPRLastDump = 0;
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//
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// Valid for the lifetime of the debug session.
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//
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ULONG PageSize;
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ULONG64 PaeEnabled;
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ULONG TargetMachine;
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BOOL Connected;
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ULONG BuildNo;
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ULONG PoolBlockShift;
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ULONG TargetIsDump;
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//
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// this string is for supporting both the old and the new way of getting
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// data from the kernel. Maybe it will go away soon.
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//
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char ___SillyString[200];
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PDEBUG_ADVANCED g_ExtAdvanced;
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PDEBUG_CLIENT g_ExtClient;
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PDEBUG_CONTROL2 g_ExtControl;
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PDEBUG_DATA_SPACES g_ExtData;
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PDEBUG_REGISTERS g_ExtRegisters;
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PDEBUG_SYMBOLS2 g_ExtSymbols;
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PDEBUG_SYSTEM_OBJECTS g_ExtSystem;
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// Queries for all debugger interfaces.
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extern "C" HRESULT
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ExtQuery(PDEBUG_CLIENT Client)
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{
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HRESULT Status;
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if ((Status = Client->QueryInterface(__uuidof(IDebugAdvanced),
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(void **)&g_ExtAdvanced)) != S_OK)
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{
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goto Fail;
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}
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if ((Status = Client->QueryInterface(__uuidof(IDebugControl2),
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(void **)&g_ExtControl)) != S_OK)
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{
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goto Fail;
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}
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if ((Status = Client->QueryInterface(__uuidof(IDebugDataSpaces),
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(void **)&g_ExtData)) != S_OK)
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{
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goto Fail;
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}
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if ((Status = Client->QueryInterface(__uuidof(IDebugRegisters),
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(void **)&g_ExtRegisters)) != S_OK)
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{
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goto Fail;
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}
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if ((Status = Client->QueryInterface(__uuidof(IDebugSymbols2),
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(void **)&g_ExtSymbols)) != S_OK)
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{
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goto Fail;
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}
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if ((Status = Client->QueryInterface(__uuidof(IDebugSystemObjects),
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(void **)&g_ExtSystem)) != S_OK)
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{
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goto Fail;
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}
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g_ExtClient = Client;
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return S_OK;
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Fail:
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ExtRelease();
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return Status;
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}
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// Cleans up all debugger interfaces.
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void
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ExtRelease(void)
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{
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g_ExtClient = NULL;
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EXT_RELEASE(g_ExtAdvanced);
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EXT_RELEASE(g_ExtControl);
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EXT_RELEASE(g_ExtData);
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EXT_RELEASE(g_ExtRegisters);
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EXT_RELEASE(g_ExtSymbols);
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EXT_RELEASE(g_ExtSystem);
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}
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// Normal output.
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void __cdecl
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ExtOut(PCSTR Format, ...)
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{
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va_list Args;
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va_start(Args, Format);
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g_ExtControl->OutputVaList(DEBUG_OUTPUT_NORMAL, Format, Args);
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va_end(Args);
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}
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// Error output.
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void __cdecl
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ExtErr(PCSTR Format, ...)
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{
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va_list Args;
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va_start(Args, Format);
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g_ExtControl->OutputVaList(DEBUG_OUTPUT_ERROR, Format, Args);
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va_end(Args);
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}
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// Warning output.
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void __cdecl
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ExtWarn(PCSTR Format, ...)
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{
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va_list Args;
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va_start(Args, Format);
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g_ExtControl->OutputVaList(DEBUG_OUTPUT_WARNING, Format, Args);
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va_end(Args);
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}
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// Verbose output.
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void __cdecl
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ExtVerb(PCSTR Format, ...)
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{
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va_list Args;
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va_start(Args, Format);
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g_ExtControl->OutputVaList(DEBUG_OUTPUT_VERBOSE, Format, Args);
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va_end(Args);
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}
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void
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GetLabIdFromBuildString(
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PSTR BuildString,
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PULONG pLabId
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)
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{
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PCHAR pstr;
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*pLabId = 0;
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_strlwr(BuildString);
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pstr = strstr(BuildString, "lab");
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if (pstr) {
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sscanf(pstr+3, "%ld", pLabId);
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}
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}
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extern "C"
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HRESULT
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CALLBACK
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DebugExtensionInitialize(PULONG Version, PULONG Flags)
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{
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IDebugClient *DebugClient;
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PDEBUG_CONTROL2 DebugControl;
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HRESULT Hr;
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*Version = DEBUG_EXTENSION_VERSION(1, 0);
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*Flags = 0;
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if ((Hr = DebugCreate(__uuidof(IDebugClient),
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(void **)&DebugClient)) != S_OK)
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{
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return Hr;
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}
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if ((Hr = DebugClient->QueryInterface(__uuidof(IDebugControl),
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(void **)&DebugControl)) != S_OK)
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{
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return Hr;
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}
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ExtensionApis.nSize = sizeof (ExtensionApis);
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if ((Hr = DebugControl->GetWindbgExtensionApis64(&ExtensionApis)) != S_OK) {
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return Hr;
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}
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DebugControl->Release();
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DebugClient->Release();
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return S_OK;
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}
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extern "C"
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void
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CALLBACK
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DebugExtensionNotify(ULONG Notify, ULONG64 Argument)
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{
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//
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// The first time we actually connect to a target, get the page size
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//
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if ((Notify == DEBUG_NOTIFY_SESSION_ACCESSIBLE) && (!Connected))
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{
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IDebugClient *DebugClient;
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PDEBUG_DATA_SPACES DebugDataSpaces;
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PDEBUG_CONTROL2 DebugControl;
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HRESULT Hr;
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ULONG64 Page;
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if ((Hr = DebugCreate(__uuidof(IDebugClient),
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(void **)&DebugClient)) == S_OK)
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{
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//
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// Get the page size and PAE enable flag
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//
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if ((Hr = DebugClient->QueryInterface(__uuidof(IDebugDataSpaces),
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(void **)&DebugDataSpaces)) == S_OK)
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{
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if ((Hr = DebugDataSpaces->ReadDebuggerData(
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DEBUG_DATA_PaeEnabled, &PaeEnabled,
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sizeof(PaeEnabled), NULL)) == S_OK)
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{
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if ((Hr = DebugDataSpaces->ReadDebuggerData(
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DEBUG_DATA_MmPageSize, &Page,
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sizeof(Page), NULL)) == S_OK)
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{
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PageSize = (ULONG)(ULONG_PTR)Page;
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}
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}
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DebugDataSpaces->Release();
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}
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//
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// Get the architecture type.
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//
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if ((Hr = DebugClient->QueryInterface(__uuidof(IDebugControl),
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(void **)&DebugControl)) == S_OK)
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{
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if (PageSize)
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{
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ULONG Platform, MajorVer, MinorVer, SrvPack, StringUsed;
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CHAR BuildString[100];
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if ((Hr = DebugControl->GetActualProcessorType(
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&TargetMachine)) == S_OK)
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{
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Connected = TRUE;
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}
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if ((Hr = DebugControl->GetSystemVersion(&Platform, &MajorVer,
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&MinorVer, NULL,
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0, NULL,
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&SrvPack, &BuildString[0],
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sizeof(BuildString), &StringUsed)) == S_OK)
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{
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ULONG LabId;
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BuildNo = MinorVer;
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GetLabIdFromBuildString(BuildString, &LabId);
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NewPool = ((BuildNo > 2407) || (LabId == 1 && BuildNo >= 2402));
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PoolBlockShift = NewPool ?
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POOL_BLOCK_SHIFT_LAB1_2402 : POOL_BLOCK_SHIFT_OLD;
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}
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}
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ULONG Class, Qual;
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if ((Hr = DebugControl->GetDebuggeeType(&Class, &Qual)) != S_OK) {
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Class = Qual = 0;
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}
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if (Qual == DEBUG_DUMP_SMALL || Qual == DEBUG_DUMP_DEFAULT || Qual == DEBUG_DUMP_FULL) {
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TargetIsDump = TRUE;
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}
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if (Class == DEBUG_CLASS_USER_WINDOWS) {
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dprintf("\n**** WARNING loaded *kernel* extension dll for usermode\n\n");
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}
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DebugControl->Release();
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}
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DebugClient->Release();
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}
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}
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if (Notify == DEBUG_NOTIFY_SESSION_INACTIVE)
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{
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Connected = FALSE;
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PageSize = 0;
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PaeEnabled = 0;
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TargetMachine = 0;
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}
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return;
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}
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extern "C"
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void
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CALLBACK
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DebugExtensionUninitialize(void)
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{
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return;
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}
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BOOL
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HaveDebuggerData(
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VOID
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)
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{
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static int havedata = 0;
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if (havedata == 0) {
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if (!Ioctl( IG_GET_KERNEL_VERSION, &KernelVersionPacket, sizeof(KernelVersionPacket))) {
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havedata = 2;
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} else if (KernelVersionPacket.MajorVersion == 0) {
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havedata = 2;
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} else {
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havedata = 1;
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}
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}
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return (havedata == 1) &&
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((KernelVersionPacket.Flags & DBGKD_VERS_FLAG_DATA) != 0);
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}
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BOOL
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GetCurrentProcessor(
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IN PDEBUG_CLIENT Client,
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OPTIONAL OUT PULONG pProcessor,
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OPTIONAL OUT PHANDLE phCurrentThread
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)
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{
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PDEBUG_SYSTEM_OBJECTS DebugSystem;
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ULONG64 hCurrentThread;
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if (Client) {
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if (Client->QueryInterface(__uuidof(IDebugSystemObjects),
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(void **)&DebugSystem) != S_OK) {
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return 0;
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}
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DebugSystem->GetCurrentThreadHandle(&hCurrentThread);
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if (phCurrentThread) {
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*phCurrentThread = (HANDLE) hCurrentThread;
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}
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if (pProcessor) {
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*pProcessor = (ULONG) hCurrentThread - 1;
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}
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DebugSystem->Release();
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return TRUE;
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}
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if (phCurrentThread) {
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*phCurrentThread = NULL;
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}
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if (pProcessor) {
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*pProcessor = 0;
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}
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return FALSE;
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}
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HRESULT
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ExecuteCommand(
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IN PDEBUG_CLIENT Client,
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IN PSTR Cmd
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)
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{
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if (Client &&
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(ExtQuery(Client) == S_OK)) {
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g_ExtControl->Execute(DEBUG_OUTCTL_AMBIENT,
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Cmd, DEBUG_EXECUTE_DEFAULT );
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ExtRelease();
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return S_OK;
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}
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return E_INVALIDARG;
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}
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HRESULT
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GetExtensionFunction(
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IN PCSTR FunctionName,
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IN FARPROC *Function
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)
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{
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if (g_ExtControl) {
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g_ExtControl->GetExtensionFunction(0, FunctionName, Function );
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return S_OK;
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}
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return E_INVALIDARG;
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}
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BOOLEAN
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ReadMemoryUncached (
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ULONG64 Offset,
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PVOID Buffer,
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ULONG BufferSize,
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PULONG BytesRead
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)
|
||
|
|
{
|
||
|
|
HRESULT result;
|
||
|
|
|
||
|
|
result = g_ExtData->ReadVirtualUncached(Offset,
|
||
|
|
Buffer,
|
||
|
|
BufferSize,
|
||
|
|
BytesRead);
|
||
|
|
|
||
|
|
return (result == S_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
WriteMemoryUncached (
|
||
|
|
ULONG64 Offset,
|
||
|
|
PVOID Buffer,
|
||
|
|
ULONG BufferSize,
|
||
|
|
PULONG BytesWritten
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT result;
|
||
|
|
|
||
|
|
result = g_ExtData->WriteVirtualUncached(Offset,
|
||
|
|
Buffer,
|
||
|
|
BufferSize,
|
||
|
|
BytesWritten);
|
||
|
|
return (result == S_OK);
|
||
|
|
}
|
||
|
|
|