i386 registers during a syscall

[Julian Elischer]

Divacky Roman wrote:

>hi,
>
>I need to get content of %esi register as it was during a syscall. Should I get
>this info from td->td_pcb->pcb_esi or td->td_frame->tf_esi?
>
>Is it so that trapframe is "content of registers when entering a kernel" and
>pcb is "when leaving a kernel" ?
>  
>

pcb is when the process is sleeping or otherwise suspended.
frame is when enterring the kernel, and reloaded when leaving the kernel

>thnx for info
>
>roman
>
>
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