[klibc] Use rt_sig*() system calls on i386

On i386, only part of the signal space is accessible through the legacy
calls.  In order to use the rt_sig*() calls, however, we have to implement
our own signal header file instead of relying on <asm/signal.h>.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2 files changed