Update libc

libc/include/signal.h

@@ -0,0 +1,102 @@
+#ifndef _SIGNAL_H
+#define _SIGNAL_H
+
+#include <bits/types/sigset_t.h>
+
+/* https://www-uxsup.csx.cam.ac.uk/courses/moved.Building/signals.pdf */
+/* https://man7.org/linux/man-pages/man7/signal.7.html */
+
+/** @brief Hangup detected on controlling or death of controlling process */
+#define SIGHUP 1
+
+/** @brief Interrupt from keyboard */
+#define SIGINT 2
+
+/** @brief Quit from keyboard */
+#define SIGQUIT 3
+
+/** @brief Illegal Instruction */
+#define SIGILL 4
+
+/** @brief Trace/breakpoint trap */
+#define SIGTRAP 5
+
+/** @brief Abort signal from abort(3) */
+#define SIGABRT 6
+
+/** @brief Bus error (bad memory access) */
+#define SIGBUS 7
+
+/** @brief Floating point exception */
+#define SIGFPE 8
+
+/** @brief Kill signal */
+#define SIGKILL 9
+
+/** @brief User-defined signal 1 */
+#define SIGUSR1 10
+
+/** @brief Invalid memory reference */
+#define SIGSEGV 11
+
+/** @brief User-defined signal 2 */
+#define SIGUSR2 12
+
+/** @brief Broken pipe: write to pipe with no readers */
+#define SIGPIPE 13
+
+/** @brief Timer signal from alarm(2) */
+#define SIGALRM 14
+
+/** @brief Termination signal */
+#define SIGTERM 15
+
+/** @brief Stack fault on coprocessor (unused) */
+#define SIGSTKFLT 16
+
+/** @brief Child stopped or terminated */
+#define SIGCHLD 17
+
+/** @brief Continue if stopped */
+#define SIGCONT 18
+
+/** @brief Stop process */
+#define SIGSTOP 19
+
+/** @brief Stop typed at terminal */
+#define SIGTSTP 20
+
+/** @brief Terminal input for background process */
+#define SIGTTIN 21
+
+/** @brief Terminal output for background process */
+#define SIGTTOU 22
+
+/** @brief Urgent condition on socket */
+#define SIGURG 23
+
+/** @brief CPU time limit exceeded */
+#define SIGXCPU 24
+
+/** @brief File size limit exceeded */
+#define SIGXFSZ 25
+
+/** @brief Virtual timer expired */
+#define SIGVTALRM 26
+
+/** @brief Profiling timer expired */
+#define SIGPROF 27
+
+/** @brief Window resize signal */
+#define SIGWINCH 28
+
+/** @brief I/O now possible */
+#define SIGIO 29
+
+/** @brief Power failure */
+#define SIGPWR 30
+
+/** @brief Bad system call */
+#define SIGSYS 31
+
+#endif // !_SIGNAL_H