Re: [f-cpu] Manual 0.2.6

[Ben Franchuk <bfranchuk@jetnet.ab.ca>]

Christophe Avoinne wrote:
> Please, I'm not telling we must have both instructions but just to instruct
> how an implementation of a fast syscall can be.


One hack would have a fake stack register and other common registers.
This register would be loaded with the 'real' register in use and use
of this special register (SU?) provides a indirection for system/user stacks.
In system use stack S, in user mode use stack U and SU provides a standard
stack for library functions like in C.
-- 
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html

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