Port of Linux 2.6.28 for use with network simulation cradle.
#ifndef _ASM_X86_SIGINFO_H
#define _ASM_X86_SIGINFO_H
#ifdef __x86_64__
# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
#endif
#include <asm-generic/siginfo.h>
#endif /* _ASM_X86_SIGINFO_H */