115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
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/*-----------------------------------------------------------------------------
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Copyright (c) 2000 Microsoft Corporation
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Module:
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exts.c
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Sample old windbg style interface using extension
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------------------------------------------------------------------------------*/
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#include "simple.h"
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//
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// Extension to read and dump dwords from target
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//
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DECLARE_API( read )
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{
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ULONG cb;
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ULONG64 Address;
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ULONG Buffer[4];
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Address = GetExpression(args);
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// Read and display first 4 dwords at Address
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if (ReadMemory(Address, &Buffer, sizeof(Buffer), &cb) && cb == sizeof(Buffer)) {
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dprintf("%I64lx: %08lx %08lx %08lx %08lx\n\n", Address,
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Buffer[0], Buffer[1], Buffer[2], Buffer[3]);
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}
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}
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//
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// Extension to edit a dword on target
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//
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// !edit <address> <value>
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//
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DECLARE_API( edit )
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{
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ULONG cb;
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ULONG64 Address;
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ULONG Value;
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if (GetExpressionEx(args, &Address, &args)) {
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Value = (ULONG) GetExpression( args);
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} else {
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dprintf("Usage: !edit <address> <value>\n");
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return;
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}
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// Read and display first 4 dwords at Address
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if (WriteMemory(Address, &Value, sizeof(Value), &cb) && cb == sizeof(Value)) {
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dprintf("%I64lx: %08lx\n", Address, Value);
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}
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}
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//
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// Extension to dump stacktrace
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//
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DECLARE_API ( stack )
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{
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EXTSTACKTRACE64 stk[20];
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ULONG frames, i;
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CHAR Buffer[256];
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ULONG64 displacement;
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// Get stacktrace for surrent thread
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frames = StackTrace( 0, 0, 0, stk, 20 );
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if (!frames) {
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dprintf("Stacktrace failed\n");
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}
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for (i=0; i<frames; i++) {
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if (i==0) {
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dprintf( "ChildEBP RetAddr Args to Child\n" );
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}
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Buffer[0] = '!';
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GetSymbol(stk[i].ProgramCounter, (PUCHAR)Buffer, &displacement);
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dprintf( "%08p %08p %08p %08p %08p %s",
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stk[i].FramePointer,
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stk[i].ReturnAddress,
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stk[i].Args[0],
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stk[i].Args[1],
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stk[i].Args[2],
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Buffer
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);
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if (displacement) {
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dprintf( "+0x%p", displacement );
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}
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dprintf( "\n" );
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}
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}
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/*
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A built-in help for the extension dll
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*/
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DECLARE_API ( help )
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{
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dprintf("Help for extension dll simple.dll\n"
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" read <addr> - It reads and dumps 4 dwords at <addr>\n"
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" edit <addr> <val> - It modifies a dword value to <val> at <addr>\n"
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" stack - Printd current stack trace\n"
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" help - Shows this help\n"
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);
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}
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