#define SIGHUP  1 /* hangup */
#define SIGINT  2 /* interrupt (rubout) */
#define SIGQUIT 3 /* quit (ASCII FS) */
#define SIGILL  4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGIOT  6 /* IOT instruction */
#define SIGABRT 6 /* used by abort, replace SIGIOT in the future */
#define SIGEMT  7 /* EMT instruction */
#define SIGFPE  8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS  10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS  12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
#define SIGUSR1 16 /* user defined signal 1 */
#define SIGUSR2 17 /* user defined signal 2 */
#define SIGCLD  18 /* child status change */
#define SIGCHLD 18 /* child status change alias POSIX */
#define SIGPWR  19 /* power-fail restart */
#define SIGWINCH 20 /* window size change */
#define SIGURG  21 /* urgent socket condition */
#define SIGPOLL 22 /* pollable event occurred */
#define SIGIO   SIGPOLL /* socket I/O possible (SIGPOLL alias) */
#define SIGSTOP 23 /* stop (cannot be caught or ignored) */
#define SIGTSTP 24 /* user stop requested from tty */
#define SIGCONT 25 /* stopped process has been continued */
#define SIGTTIN 26 /* background tty read attempted */
#define SIGTTOU 27 /* background tty write attempted */
#define SIGVTALRM 28 /* virtual timer expired */
#define SIGPROF 29 /* profiling timer expired */
#define SIGXCPU 30 /* exceeded cpu limit */
#define SIGXFSZ 31 /* exceeded file size limit */
#define SIGWAITING 32 /* process's lwps are blocked */
#define SIGLWP  33 /* special signal used by thread library */