On Mon, Mar 10, 2003 at 10:22:56AM +0000, Jon Burgess wrote:
> > Further no known libc implementation making use of sa_restorer.
> I don't know if this is relevant, but Linus recently tried
> changing the sa_restorer behaviour in the linux-2.5 kernel and
> later had to back out the change. The following lines are from
> recent changelogs:
> Move x86 signal handler return stub to the vsyscall page, and stop
> honoring the SA_RESTORER information.
> Re-instate the SA_RESTORER functionality, since it seems that some
> programs still depend on it and in fact do install a different
> signal restorer than the standard kernel version.
Doesn't look relevant to us because installing requires custom assembler
code for each architecture or other non-portable constructs. It seems
nothing on MIPS was ever actually using sa_restorer or SA_RESTORER.