[uClinux-dev] userspace and kernel space

[David McCullough]

Jivin Muthu, Pushparaj IN GGN SISL lays it down ...
> Question related to  uClinux  has user space and kernel spaceser space .
> 
> My question is
> In uClinux when user space calls system call , it invokes software interrupt and enter into kernel space serve the routine and come back to user space like destop linux. or user call like wrapper function over the  kernel call.

Usually it's done using a trap/software interrupt just as in the MMU
version.  No difference.  That's not to say that you couldn't do
something else,  just that no one has to my knowledge.

Cheers,
Davidm

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David McCullough,  david_mccullough at securecomputing.com,   Ph:+61 734352815
Secure Computing - SnapGear  http://www.uCdot.org http://www.cyberguard.com