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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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drwatson
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context.c
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C/C++ Source or Header
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1995-03-15
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1KB
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58 lines
/*++
Copyright (c) 1993 Microsoft Corporation
Module Name:
context.c
Abstract:
This file provides access to thread context information.
Author:
Wesley Witt (wesw) 1-May-1993
Environment:
User Mode
--*/
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "drwatson.h"
#include "proto.h"
void
GetContextForThread( PDEBUGPACKET dp )
{
PTHREADCONTEXT ptctx = dp->tctx;
memset(&ptctx->context,0,sizeof(CONTEXT));
ptctx->context.ContextFlags = CONTEXT_FULL |
CONTEXT_FLOATING_POINT |
CONTEXT_DEBUG_REGISTERS;
if (!GetThreadContext( ptctx->hThread, &ptctx->context )) {
lprintfs( ">>>>> GetThreadContext failed: err(%d), hthread(0x%x)\n",
GetLastError(), ptctx->hThread );
ptctx->pc = 0;
ptctx->frame = 0;
ptctx->stack = 0;
}
else {
ptctx->pc = ptctx->context.Eip;
ptctx->frame = ptctx->context.Ebp;
ptctx->stack = ptctx->context.Esp;
}
return;
}