Question on PowerPC setjmp/longjmp ABI
Richard Henderson
rth@twiddle.net
Sat Feb 17 14:55:00 GMT 2001
On Sat, Feb 17, 2001 at 12:03:37PM -0800, Geoff Keating wrote:
> Altivec is a different problem, because Altivec doesn't introduce a
> new ABI---you can link non-altivec code with altivec code, and this
> should work just fine. I think what we'll have to do is increase the
> size of __jmp_buf, and version everything connected to it.
I don't think so. If you want Altivec to not change the ABI,
then all Altivec registers must be call clobbered, and thus
they need not be saved in a jmp_buf.
r~
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