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Re: Question on PowerPC setjmp/longjmp ABI
On Sat, Feb 17, 2001 at 07:09:41PM -0600, Troy Benjegerdes wrote:
> Please correct me if I'm wrong, but then what happens if a process is
> using Altivec and gets a signal? Isn't there a potential for altivec
> registers to get clobbered?
No, that's a kernel issue.
> Aside from that, the Altivec Programmers Interface Manual says that
> altivec registers 20-31 are to be saved by setjmp/longjmp on the SVR4 ABI.
Then there _are_ ABI changes -- the ABI before Altivec is not
completely compatible with the one after.
r~