Add names for signals

Author: perry-ca

llvm/lib/Support/zOSLibFunctions.cpp

@@ -19,11 +19,56 @@
 #include <sys/wait.h>
 
 
+char *signalName[] = {
+  /*  0 */ nullptr,
+  /*  1 */ "Hangup", // SIGHUP - Posix
+  /*  2 */ "Interrupt", // SIGINT
+  /*  3 */ "Aborted", // SIGABRT
+  /*  4 */ "Illegal instruction", // SIGILL
+  /*  5 */ "Polling event", // SIGPOLL
+  /*  6 */ "Socket data available", // SIGURG
+  /*  7 */ "Stopped (signal)", // SIGSTOP - Posix
+  /*  8 */ "Floating point exception", // SIGFPE
+  /*  9 */ "Killed", // SIGKILL - Posix
+  /* 10 */ "Bus error", // SIGBUS
+  /* 11 */ "Segmentation fault", // SIGSEGV
+  /* 12 */ "Bad system call", // SIGSYS
+  /* 13 */ "Broken pipe", // SIGPIPE - Posix
+  /* 14 */ "Alarm clock", // SIGALRM - Posix
+  /* 15 */ "Terminated", // SIGTERM
+  /* 16 */ "User defined signal 1", // SIGUSR1
+  /* 17 */ "User defined signal 2", // SIGUSR2
+  /* 18 */ "Abend", // SIGABND
+  /* 19 */ "Continued", // SIGCONT - Posix
+  /* 20 */ "Child exited", // SIGCHLD - Posix
+  /* 21 */ "Stopped (tty input)", // SIGTTIN - Posix
+  /* 22 */ "Stopped (tty output)", // SIGTTOU - Posix
+  /* 23 */ "I/O complete", // SIGIO
+  /* 24 */ "Quit", // SIGQUIT - Posix
+  /* 25 */ "Stopped", // SIGTSTP - Posix
+  /* 26 */ "Trace/breakpoint trap", // SIGTRAP
+  /* 27 */ "I/O error", // SIGIOERR
+  /* 28 */ "Window changed", // SIGWINCH
+  /* 29 */ "CPU time limit exceeded", // SIGXCPU
+  /* 30 */ "File size limit exceeded", // SIGXFSZ
+  /* 31 */ "Virtual timer expired", // SIGVTALRM
+  /* 32 */ "Profiling timer expired",
+  /* 33 */ "OMVS subsystem shutdown",  // SIGDANGER
+  /* 34 */ "Thread stop", // SIGTHSTOP
+  /* 35 */ "Thread resume", // SIGTHCONT
+  /* 36 */ nullptr,
+  /* 37 */ "Toggle syscall trace", // SIGTRACE
+  /* 38 */ nullptr, // SIGDCE
+  /* 39 */ "System dump", // SIGDUMP - Posix
+};
+
 // z/OS Unix System Services does not have strsignal() support, so the
 // strsignal() function is implemented here.
 char *strsignal(int sig) {
+  if (sig < sizeof(signalName)/sizeof(signalName[0]) && signalName[sig])
+    return signalName[sig];
   static char msg[256];
-  sprintf(msg, "%d", sig);
+  sprintf(msg, "Unknown signal %d", sig);
   return msg;
 }