Subject: Re: AltiVec and *jmp.
To: Matt Thomas <firstname.lastname@example.org>
From: Jason R Thorpe <email@example.com>
Date: 07/02/2002 08:01:10
On Tue, Jul 02, 2002 at 12:44:47AM -0700, Matt Thomas wrote:
> When AltiVec is present (__VEC__ is defined), the jmp_buf is
> extended by 48 bytes and vector registers are saved starting
> at offset 256 and the contents of VRSAVE are at offset 248.
> This requires a different setjmp/longjmp, etal so perform the
> optional altivec instructions.
Actually, I'd say that you simply should not do this at all. These
routines don't save/restore FP state either, for example.
-- Jason R. Thorpe <firstname.lastname@example.org>