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Re: Question on PowerPC setjmp/longjmp ABI
- To: Geoff Keating <geoffk at redhat dot com>
- Subject: Re: Question on PowerPC setjmp/longjmp ABI
- From: Richard Henderson <rth at twiddle dot net>
- Date: Sat, 17 Feb 2001 14:55:11 -0800
- Cc: dmj+ at andrew dot cmu dot edu, libc-alpha at sourceware dot cygnus dot com
- References: <20010217133410.A3549@drow.them.org> <200102172003.MAA22373@geoffk.org>
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~