Current Instruction Address (register EIP)

[lhayes00]

Hi,

I am creating some specialised exception handling code for a set of apps I am creating. I need to know how to retrieve the current instruction address, i.e. the value of register EIP into a variable of type LPVOID. Does anybody know how this can be done without having to write any assembly code.

If not how can I create some nested assembly code to do this?

The value from EIP will not be modified in any way, I just want to output it to the user in some way.

Any help would be greatly appreciated!

Best Regards,
Lea Hayes

[kernel_gaddafi]

	unsigned int dwEip;

	__asm{
	
		call  geip;
geip:
		pop	dwEip;
	};
	
	printf("\nValue of EIP:%08x",dwEip);

[Siddhartha]

[ redirected ]

Regards,
Siddhartha

[lhayes00]

Hi,

That works great; thanks for that.

Do you know how I could extend this slightly so it could go inside a C++ function? For example:

void MyFunc()
{
    unsigned int dwEip;
    __asm {...}

   printf("\nValue of EIP:%08x",dwEip);
}

void AnotherFunc()
{
   // some code

   MyFunc();   // which displays the EIP of this line.
}

If it isn't possible i'll just create a macro, but it would be handy if it were possible.

Thanks for your help.
Lea

[rxbagain]

Here's the C/C++ code

void __stdcall GetEIP(void **ppeip_ret)
{   
   void **ppeip = (void**)&ppeip_ret;
   *ppeip_ret = ppeip[-1];
}


void main()
{  
   void *pv = NULL;
   GetEIP(&pv);

   ...

}

Hope it will help you

[lhayes00]

Hi,

Brilliant, that is exactly what I needed!

Lea Hayes