Squash commits for public release

libs/libc/include/bits/signal.h

@@ -0,0 +1,44 @@
+#ifndef _LIBC_BITS_SIGNAL_H
+#define _LIBC_BITS_SIGNAL_H
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT 6
+#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 SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+
+typedef void (*sighandler_t)(int);
+
+#define SIG_DFL ((sighandler_t)0)
+#define SIG_ERR ((sighandler_t)-1)
+#define SIG_IGN ((sighandler_t)1)
+
+#endif // _LIBC_BITS_SIGNAL_H