Re: [ntdev] How to fake an interrupt

NTDEV
1

You can try this.
You need to know(determine) the interrupt vector.
Suppose it is 0x53,
Now you can fake an interrupt using
__asm int 0x53

Note: you can’t use variable names with “int” instruction. you might prefer
to use a switch statement.

regards,
Maddy

On 3/19/07, xxxxx@gmail.com wrote:
>
> Walter oney Programming the Microsoft Windows Driver Model:
>
> Chapter 5 The I/O Request Packet:
>
> The “Standard Model” for IRP Processing:
>
> The StartIo Routine $B!'(BIn fact, sometimes the easiest way to
> commence a new operation is to store some state information in your device
> extension and then fake an interrupt
>
> But how to “fake an interrupt” ???
>
>
> —
> Questions? First check the Kernel Driver FAQ at
> http://www.osronline.com/article.cfm?id=256
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>

2

Can you please elaborate on “this will send an EOI to the interrupt
controller”?

On 3/21/07, Jake Oshins wrote:
>
> Of course, the code that you’ve invoked when you do this will send an EOI
> to
> the interrupt controller where there was no hardware interrupt. This will
> inevitably dismiss some other interrupt, causing another ISR to be
> skipped, causing indeterminate system behavior. (And this is just the
> most
> obvious of problems here.)
>
> - Jake
>
>
> “Madhusudan Narayan” wrote in message
> news:xxxxx@ntdev…
> You can try this.
> You need to know(determine) the interrupt vector.
> Suppose it is 0x53,
> Now you can fake an interrupt using
> __asm int 0x53
>
> Note: you can’t use variable names with “int” instruction. you might
> prefer
> to use a switch statement.
>
> regards,
> Maddy
>
>
> On 3/19/07, xxxxx@gmail.com wrote:
> Walter oney Programming the Microsoft Windows Driver Model:
>
> Chapter 5 The I/O Request Packet:
>
> The “Standard Model” for IRP Processing:
>
> The StartIo Routine $B!'(BIn fact, sometimes the easiest way to
> commence a new operation is to store some state information in your device
> extension and then fake an interrupt
>
> But how to “fake an interrupt” ???
>
>
> —
> Questions? First check the Kernel Driver FAQ at
> http://www.osronline.com/article.cfm?id=256
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
>
>
> —
> Questions? First check the Kernel Driver FAQ at
> http://www.osronline.com/article.cfm?id=256
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>