R13 register

[Guest Varun Bansal]

Hi,

 

One of my application written for x64 calls an API xyz which returns an

error invalid parameter. Debugging the disassembly shows that the API checks

the value of R13 register which is 0 and hence it returns invalid parameter.

Does anyone know what R13 register is used for?

 

Thanks,

Varun

[Guest Varun Bansal]

Re: R13 register

 

I found the solution. Thanks!

 

"Varun Bansal" <varun_bits@yahoo.com> wrote in message

news:%23gOO2p8AIHA.1356@TK2MSFTNGP03.phx.gbl...

> Hi,

>

> One of my application written for x64 calls an API xyz which returns an

> error invalid parameter. Debugging the disassembly shows that the API

> checks the value of R13 register which is 0 and hence it returns invalid

> parameter. Does anyone know what R13 register is used for?

>

> Thanks,

> Varun

>