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1.1 root 1: #include "givit.h"
2:
3: #define NEWSTATE StateChange.NewState
4: #define EXCEPTION_CODE StateChange.u.Exception.ExceptionRecord.ExceptionCode
5: #define FIRST_CHANCE StateChange.u.Exception.FirstChance
6: #define EXCEPTIONPC (ULONG)StateChange.ProgramCounter
7:
8: #define EXCEPTIONREPORT StateChange.ControlReport
9: #ifdef i386
10: #define EXCEPTIONDR7 StateChange.ControlReport.Dr7
11: #endif
12: #define INSTRCOUNT StateChange.ControlReport.InstructionCount
13: #define INSTRSTREAM StateChange.ControlReport.InstructionStream
14:
15: USHORT NtsdCurrentProcessor;
16: USHORT DefaultProcessor;
17: DBGKD_WAIT_STATE_CHANGE StateChange;
18: char Buffer[256];
19: USHORT ProcessorType;
20: ULONG NumberProcessors = 1;
21:
22: void _CRTAPI1 main (int Argc, PUCHAR *Argv)
23: {
24: DWORD st;
25: PUCHAR pszExceptCode;
26: PUCHAR Switch;
27:
28: int Index;
29: DBGKD_CONTROL_SET ControlSet;
30: BOOLEAN Connected;
31:
32: ConsoleInputHandle = GetStdHandle( STD_INPUT_HANDLE );
33: ConsoleOutputHandle = GetStdHandle( STD_ERROR_HANDLE );
34:
35: NtsdCurrentProcessor = DefaultProcessor = 0;
36:
37: st = DbgKdConnectAndInitialize();
38:
39: if (st != ERROR_SUCCESS ) {
40: printf("kd: DbgKdConnectAndInitialize failed: %08lx\n", st);
41: exit(1);
42: }
43:
44: Connected = FALSE;
45:
46: while (TRUE) {
47:
48: st = DbgKdWaitStateChange(&StateChange, Buffer, 254);
49: if (!Connected) {
50: Connected = TRUE;
51: printf("KD: Kernel Debugger connection established.\n");
52: }
53:
54: if (st != ERROR_SUCCESS) {
55: printf("kd: DbgKdWaitStateChange failed: %08lx\n", st);
56: exit(1);
57: }
58: ProcessorType = StateChange.ProcessorType;
59: NtsdCurrentProcessor = StateChange.Processor;
60: NumberProcessors = StateChange.NumberProcessors;
61: if (StateChange.NewState == DbgKdExceptionStateChange) {
62:
63: if (EXCEPTION_CODE == EXCEPTION_BREAKPOINT
64: || EXCEPTION_CODE == EXCEPTION_SINGLE_STEP)
65: pszExceptCode = "BreakPoint";
66: else if (EXCEPTION_CODE == EXCEPTION_DATATYPE_MISALIGNMENT)
67: pszExceptCode = "Data Misaligned";
68: else if (EXCEPTION_CODE == EXCEPTION_INT_OVERFLOW)
69: pszExceptCode = "Integer Overflow";
70: else if (EXCEPTION_CODE == EXCEPTION_ACCESS_VIOLATION)
71: pszExceptCode = "Access Violation";
72: else
73: pszExceptCode = "Unknown Exception";
74:
75: if (!pszExceptCode) {
76: st = DBG_EXCEPTION_HANDLED;
77: } else {
78: printf("%s - code: %08lx (", pszExceptCode, EXCEPTION_CODE);
79: st = DBG_EXCEPTION_HANDLED;
80: if (FIRST_CHANCE)
81: printf("first");
82: else
83: printf("second");
84: printf(" chance)\n");
85: }
86:
87: #ifdef i386
88: if (EXCEPTION_CODE == EXCEPTION_BREAKPOINT) {
89: CONTEXT Registers;
90: KSPECIAL_REGISTERS SpecialRegisters;
91: if ( DbgKdGetContext(NtsdCurrentProcessor,&Registers) == ERROR_SUCCESS ) {
92: printf("Breakpoint Occured at:\n");
93: printf("eip = 0x%08x\n",Registers.Eip);
94: printf("ebp = 0x%08x\n",Registers.Ebp);
95: printf("esp = 0x%08x\n",Registers.Esp);
96: Registers.Eip++;
97: DbgKdSetContext(NtsdCurrentProcessor,&Registers);
98: }
99: if ( DbgKdReadControlSpace(
100: NtsdCurrentProcessor,
101: (PVOID)sizeof(CONTEXT),
102: (PVOID)&SpecialRegisters,
103: sizeof(KSPECIAL_REGISTERS),
104: NULL) == ERROR_SUCCESS ) {
105: printf("cr3 = 0x%08x\n",SpecialRegisters.Cr3);
106: printf("cr0 = 0x%08x\n",SpecialRegisters.Cr0);
107: }
108: }
109: ControlSet.TraceFlag = FALSE;
110: ControlSet.Dr7 = EXCEPTIONDR7;
111: #endif
112: }
113: else
114: if (StateChange.NewState == DbgKdLoadSymbolsStateChange) {
115: if (StateChange.u.LoadSymbols.UnloadSymbols) {
116: if (StateChange.u.LoadSymbols.PathNameLength == 0 &&
117: StateChange.u.LoadSymbols.BaseOfDll == (PVOID)-1 &&
118: StateChange.u.LoadSymbols.ProcessId == 0
119: ) {
120: ;
121: }
122: else {
123: printf("Unloading %s\n",Buffer);
124: }
125: }
126: else {
127: printf("Loading Image %s at 0x%lx\n",
128: Buffer,
129: StateChange.u.LoadSymbols.BaseOfDll
130: );
131: }
132: #ifdef i386
133: ControlSet.TraceFlag = FALSE;
134: ControlSet.Dr7 = EXCEPTIONDR7;
135: #endif
136: st = DBG_CONTINUE;
137: }
138: else {
139: //
140: // BUG, BUG - invalid NewState in state change record.
141: //
142: #ifdef i386
143: ControlSet.TraceFlag = FALSE;
144: ControlSet.Dr7 = EXCEPTIONDR7;
145: #endif
146: st = DBG_CONTINUE;
147: }
148:
149:
150: st = DbgKdContinue2(st, ControlSet);
151: if (st != ERROR_SUCCESS) {
152: printf("kd: DbgKdContinue failed: %08lx\n", st);
153: exit(1);
154: }
155: }
156: }
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