#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \

 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)

#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)

#define MINSIGSTKSZ 2048

#define SIGSTKSZ 8192

#endif

typedef struct {

	unsigned long __space[32];

} mcontext_t;

struct sigaltstack {

	void *	ss_sp;

	int	ss_flags;

	size_t	ss_size;

};

typedef struct __ucontext {

	unsigned int		uc_csize;

	unsigned int		uc_msize;

	unsigned int		uc_pad[2];

	unsigned long		uc_flags;

	unsigned long		uc_opaquef[3];

	unsigned int		uc_opaquec[8];

	unsigned long		uc_reserved[32];

	unsigned long		uc_align[2];

	stack_t			uc_stack;

	struct __ucontext *	uc_link;

	sigset_t		uc_sigmask;

	mcontext_t		uc_mcontext;

} ucontext_t;

#define SA_NOCLDSTOP  1

#define SA_NOCLDWAIT  2

#define SA_SIGINFO    4

#define SA_ONSTACK    0x08000000

#define SA_RESTART    0x10000000

#define SA_NODEFER    0x40000000

#define SA_RESETHAND  0x80000000

#define SA_RESTORER   0x04000000

#endif

#define SIGHUP    1

#define SIGINT    2

#define SIGQUIT   3

#define SIGILL    4

#define SIGTRAP   5

#define SIGABRT   6

#define SIGIOT    SIGABRT

#define SIGBUS    7

#define SIGFPE    8

#define SIGKILL   9

#define SIGUSR1   10

#define SIGSEGV   11

#define SIGUSR2   12

#define SIGPIPE   13

#define SIGALRM   14

#define SIGTERM   15

#define SIGSTKFLT 16

#define SIGCHLD   17

#define SIGCONT   18

#define SIGSTOP   19

#define SIGTSTP   20

#define SIGTTIN   21

#define SIGTTOU   22

#define SIGURG    23

#define SIGXCPU   24

#define SIGXFSZ   25

#define SIGVTALRM 26

#define SIGPROF   27

#define SIGWINCH  28

#define SIGIO     29

#define SIGPOLL   29

#define SIGPWR    30

#define SIGSYS    31

#define SIGUNUSED SIGSYS

#define _NSIG 65