Re: [rfa/6.0] Better handle unspecified CFI values

Jim Blandy
2003-09-09T17:24:58Z

Daniel Jacobowitz <drow@mvista.com> writes:
> Yes - normally. On S/390, stdcall, et cetera (anywhere where the hack
> would be wrong) it gets even worse. We can only compute expressions
> describing a memory location where the register is saved, not computed
> values. For stack pointers (and maybe frame pointers on some
> architectures?) this isn't good enough.

Not to pursue unimportant tangents, but why would the hack be wrong on
the S/390? Its frames are normally FP-free, but aside from that,
what's unusual about it?