* Charles Forsyth <fors...@terzarima.net> wrote:
> >waserror() depends on callee-save.
> 
> caller-save, and a few other conventions (or rather, no need for more 
> conventions).
> specifically, it's enough to save the pc and stack. all variables will
> have the right values on non-zero return from setjmp, regardless of the
> presence or absence of "volatile", and that return can be done by
> simply setting the pc and the stack pointer to the values in the jmp_buf.

What exactly is different between these calling conventions ?
How much does the Plan9 code depend on them ?


cu
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