* target.h: Add enum target_waitkind, enum target_signal, and

	struct target_waitstatus.  Change status argument to target_wait to
	be struct target_waitstatus * instead of int *.
	* target.h, infrun.c, all targets: Change type of signal arguments
	to resume(), proceed(), and target_resume() from int to enum
	target_signal.
	* All targets (*_wait, *_resume): Change accordingly.
	* infcmd.c (program_info, signal_command), throughout infrun.c,
	* fork-child.c, solib.c, hppa-tdep.c, osfsolib.c: Use this stuff.
	* convex-xdep.c, convex-tdep.c: Add FIXME's (getting the Convex
	signal code stuff right with the new signals would be non-trivial).
	* inferior.h (stop_signal): Make it enum target_signal not int.
	* target.c, target.h (target_signal_to_string, target_signal_to_name,
	target_signal_from_name): New functions.
	* inftarg.c, target.h (target_signal_to_host, target_signal_from_host,
	store_waitstatus): New functions.
	* procfs.c (procfs_notice_signals): Use them.
	* i960-tdep.c (i960_fault_to_signal): New function, to replace
	print_fault.
	* config/i960/tm-i960.h: Don't define PRINT_RANDOM_SIGNAL.

1 files changed, 346 insertions, 14 deletions

diff --git a/gdb/inftarg.c b/gdb/inftarg.c
index 2c110ab5b32..f7f95019e15 100644
--- a/gdb/inftarg.c
+++ b/gdb/inftarg.c
@@ -32,7 +32,7 @@ child_prepare_to_store PARAMS ((void));
 
 #ifndef CHILD_WAIT
 static int
-child_wait PARAMS ((int, int *));
+child_wait PARAMS ((int, struct target_waitstatus *));
 #endif /* CHILD_WAIT */
 
 static void
@@ -67,23 +67,345 @@ extern char **environ;
 /* Forward declaration */
 extern struct target_ops child_ops;
 
+/* Convert host signal to our signals.  */
+enum target_signal
+target_signal_from_host (hostsig)
+     int hostsig;
+{
+  /* A switch statement would make sense but would require special kludges
+     to deal with the cases where more than one signal has the same number.  */
+
+  if (hostsig == 0) return TARGET_SIGNAL_0;
+
+#if defined (SIGHUP)
+  if (hostsig == SIGHUP) return TARGET_SIGNAL_HUP;
+#endif
+#if defined (SIGINT)
+  if (hostsig == SIGINT) return TARGET_SIGNAL_INT;
+#endif
+#if defined (SIGQUIT)
+  if (hostsig == SIGQUIT) return TARGET_SIGNAL_QUIT;
+#endif
+#if defined (SIGILL)
+  if (hostsig == SIGILL) return TARGET_SIGNAL_ILL;
+#endif
+#if defined (SIGTRAP)
+  if (hostsig == SIGTRAP) return TARGET_SIGNAL_TRAP;
+#endif
+#if defined (SIGABRT)
+  if (hostsig == SIGABRT) return TARGET_SIGNAL_ABRT;
+#endif
+#if defined (SIGEMT)
+  if (hostsig == SIGEMT) return TARGET_SIGNAL_EMT;
+#endif
+#if defined (SIGFPE)
+  if (hostsig == SIGFPE) return TARGET_SIGNAL_FPE;
+#endif
+#if defined (SIGKILL)
+  if (hostsig == SIGKILL) return TARGET_SIGNAL_KILL;
+#endif
+#if defined (SIGBUS)
+  if (hostsig == SIGBUS) return TARGET_SIGNAL_BUS;
+#endif
+#if defined (SIGSEGV)
+  if (hostsig == SIGSEGV) return TARGET_SIGNAL_SEGV;
+#endif
+#if defined (SIGSYS)
+  if (hostsig == SIGSYS) return TARGET_SIGNAL_SYS;
+#endif
+#if defined (SIGPIPE)
+  if (hostsig == SIGPIPE) return TARGET_SIGNAL_PIPE;
+#endif
+#if defined (SIGALRM)
+  if (hostsig == SIGALRM) return TARGET_SIGNAL_ALRM;
+#endif
+#if defined (SIGTERM)
+  if (hostsig == SIGTERM) return TARGET_SIGNAL_TERM;
+#endif
+#if defined (SIGUSR1)
+  if (hostsig == SIGUSR1) return TARGET_SIGNAL_USR1;
+#endif
+#if defined (SIGUSR2)
+  if (hostsig == SIGUSR2) return TARGET_SIGNAL_USR2;
+#endif
+#if defined (SIGCLD)
+  if (hostsig == SIGCLD) return TARGET_SIGNAL_CHLD;
+#endif
+#if defined (SIGCHLD)
+  if (hostsig == SIGCHLD) return TARGET_SIGNAL_CHLD;
+#endif
+#if defined (SIGPWR)
+  if (hostsig == SIGPWR) return TARGET_SIGNAL_PWR;
+#endif
+#if defined (SIGWINCH)
+  if (hostsig == SIGWINCH) return TARGET_SIGNAL_WINCH;
+#endif
+#if defined (SIGURG)
+  if (hostsig == SIGURG) return TARGET_SIGNAL_URG;
+#endif
+#if defined (SIGIO)
+  if (hostsig == SIGIO) return TARGET_SIGNAL_IO;
+#endif
+#if defined (SIGPOLL)
+  if (hostsig == SIGPOLL) return TARGET_SIGNAL_POLL;
+#endif
+#if defined (SIGSTOP)
+  if (hostsig == SIGSTOP) return TARGET_SIGNAL_STOP;
+#endif
+#if defined (SIGTSTP)
+  if (hostsig == SIGTSTP) return TARGET_SIGNAL_TSTP;
+#endif
+#if defined (SIGCONT)
+  if (hostsig == SIGCONT) return TARGET_SIGNAL_CONT;
+#endif
+#if defined (SIGTTIN)
+  if (hostsig == SIGTTIN) return TARGET_SIGNAL_TTIN;
+#endif
+#if defined (SIGTTOU)
+  if (hostsig == SIGTTOU) return TARGET_SIGNAL_TTOU;
+#endif
+#if defined (SIGVTALRM)
+  if (hostsig == SIGVTALRM) return TARGET_SIGNAL_VTALRM;
+#endif
+#if defined (SIGPROF)
+  if (hostsig == SIGPROF) return TARGET_SIGNAL_PROF;
+#endif
+#if defined (SIGXCPU)
+  if (hostsig == SIGXCPU) return TARGET_SIGNAL_XCPU;
+#endif
+#if defined (SIGXFSZ)
+  if (hostsig == SIGXFSZ) return TARGET_SIGNAL_XFSZ;
+#endif
+#if defined (SIGWIND)
+  if (hostsig == SIGWIND) return TARGET_SIGNAL_WIND;
+#endif
+#if defined (SIGPHONE)
+  if (hostsig == SIGPHONE) return TARGET_SIGNAL_PHONE;
+#endif
+#if defined (SIGLOST)
+  if (hostsig == SIGLOST) return TARGET_SIGNAL_LOST;
+#endif
+#if defined (SIGWAITING)
+  if (hostsig == SIGWAITING) return TARGET_SIGNAL_WAITING;
+#endif
+#if defined (SIGLWP)
+  if (hostsig == SIGLWP) return TARGET_SIGNAL_LWP;
+#endif
+#if defined (SIGDANGER)
+  if (hostsig == SIGDANGER) return TARGET_SIGNAL_DANGER;
+#endif
+#if defined (SIGGRANT)
+  if (hostsig == SIGGRANT) return TARGET_SIGNAL_GRANT;
+#endif
+#if defined (SIGRETRACT)
+  if (hostsig == SIGRETRACT) return TARGET_SIGNAL_RETRACT;
+#endif
+#if defined (SIGMSG)
+  if (hostsig == SIGMSG) return TARGET_SIGNAL_MSG;
+#endif
+#if defined (SIGSOUND)
+  if (hostsig == SIGSOUND) return TARGET_SIGNAL_SOUND;
+#endif
+#if defined (SIGSAK)
+  if (hostsig == SIGSAK) return TARGET_SIGNAL_SAK;
+#endif
+  return TARGET_SIGNAL_UNKNOWN;
+}
+
+int
+target_signal_to_host (oursig)
+     enum target_signal oursig;
+{
+  switch (oursig)
+    {
+    case TARGET_SIGNAL_0: return 0;
+
+#if defined (SIGHUP)
+    case TARGET_SIGNAL_HUP: return SIGHUP;
+#endif
+#if defined (SIGINT)
+    case TARGET_SIGNAL_INT: return SIGINT;
+#endif
+#if defined (SIGQUIT)
+    case TARGET_SIGNAL_QUIT: return SIGQUIT;
+#endif
+#if defined (SIGILL)
+    case TARGET_SIGNAL_ILL: return SIGILL;
+#endif
+#if defined (SIGTRAP)
+    case TARGET_SIGNAL_TRAP: return SIGTRAP;
+#endif
+#if defined (SIGABRT)
+    case TARGET_SIGNAL_ABRT: return SIGABRT;
+#endif
+#if defined (SIGEMT)
+    case TARGET_SIGNAL_EMT: return SIGEMT;
+#endif
+#if defined (SIGFPE)
+    case TARGET_SIGNAL_FPE: return SIGFPE;
+#endif
+#if defined (SIGKILL)
+    case TARGET_SIGNAL_KILL: return SIGKILL;
+#endif
+#if defined (SIGBUS)
+    case TARGET_SIGNAL_BUS: return SIGBUS;
+#endif
+#if defined (SIGSEGV)
+    case TARGET_SIGNAL_SEGV: return SIGSEGV;
+#endif
+#if defined (SIGSYS)
+    case TARGET_SIGNAL_SYS: return SIGSYS;
+#endif
+#if defined (SIGPIPE)
+    case TARGET_SIGNAL_PIPE: return SIGPIPE;
+#endif
+#if defined (SIGALRM)
+    case TARGET_SIGNAL_ALRM: return SIGALRM;
+#endif
+#if defined (SIGTERM)
+    case TARGET_SIGNAL_TERM: return SIGTERM;
+#endif
+#if defined (SIGUSR1)
+    case TARGET_SIGNAL_USR1: return SIGUSR1;
+#endif
+#if defined (SIGUSR2)
+    case TARGET_SIGNAL_USR2: return SIGUSR2;
+#endif
+#if defined (SIGCHLD) || defined (SIGCLD)
+    case TARGET_SIGNAL_CHLD: 
+#if defined (SIGCHLD)
+      return SIGCHLD;
+#else
+      return SIGCLD;
+#endif
+#endif /* SIGCLD or SIGCHLD */
+#if defined (SIGPWR)
+    case TARGET_SIGNAL_PWR: return SIGPWR;
+#endif
+#if defined (SIGWINCH)
+    case TARGET_SIGNAL_WINCH: return SIGWINCH;
+#endif
+#if defined (SIGURG)
+    case TARGET_SIGNAL_URG: return SIGURG;
+#endif
+#if defined (SIGIO)
+    case TARGET_SIGNAL_IO: return SIGIO;
+#endif
+#if defined (SIGPOLL)
+    case TARGET_SIGNAL_POLL: return SIGPOLL;
+#endif
+#if defined (SIGSTOP)
+    case TARGET_SIGNAL_STOP: return SIGSTOP;
+#endif
+#if defined (SIGTSTP)
+    case TARGET_SIGNAL_TSTP: return SIGTSTP;
+#endif
+#if defined (SIGCONT)
+    case TARGET_SIGNAL_CONT: return SIGCONT;
+#endif
+#if defined (SIGTTIN)
+    case TARGET_SIGNAL_TTIN: return SIGTTIN;
+#endif
+#if defined (SIGTTOU)
+    case TARGET_SIGNAL_TTOU: return SIGTTOU;
+#endif
+#if defined (SIGVTALRM)
+    case TARGET_SIGNAL_VTALRM: return SIGVTALRM;
+#endif
+#if defined (SIGPROF)
+    case TARGET_SIGNAL_PROF: return SIGPROF;
+#endif
+#if defined (SIGXCPU)
+    case TARGET_SIGNAL_XCPU: return SIGXCPU;
+#endif
+#if defined (SIGXFSZ)
+    case TARGET_SIGNAL_XFSZ: return SIGXFSZ;
+#endif
+#if defined (SIGWIND)
+    case TARGET_SIGNAL_WIND: return SIGWIND;
+#endif
+#if defined (SIGPHONE)
+    case TARGET_SIGNAL_PHONE: return SIGPHONE;
+#endif
+#if defined (SIGLOST)
+    case TARGET_SIGNAL_LOST: return SIGLOST;
+#endif
+#if defined (SIGWAITING)
+    case TARGET_SIGNAL_WAITING: return SIGWAITING;
+#endif
+#if defined (SIGLWP)
+    case TARGET_SIGNAL_LWP: return SIGLWP;
+#endif
+#if defined (SIGDANGER)
+    case TARGET_SIGNAL_DANGER: return SIGDANGER;
+#endif
+#if defined (SIGGRANT)
+    case TARGET_SIGNAL_GRANT: return SIGGRANT;
+#endif
+#if defined (SIGRETRACT)
+    case TARGET_SIGNAL_RETRACT: return SIGRETRACT;
+#endif
+#if defined (SIGMSG)
+    case TARGET_SIGNAL_MSG: return SIGMSG;
+#endif
+#if defined (SIGSOUND)
+    case TARGET_SIGNAL_SOUND: return SIGSOUND;
+#endif
+#if defined (SIGSAK)
+    case TARGET_SIGNAL_SAK: return SIGSAK;
+#endif
+    default:
+      /* The user might be trying to do "signal SIGSAK" where this system
+	 doesn't have SIGSAK.  */
+      warning ("Signal %s does not exist on this system.\n",
+	       target_signal_to_name (oursig));
+      return 0;
+    }
+}
+
+/* Helper function for child_wait and the Lynx derivatives of child_wait.
+   HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
+   translation of that in OURSTATUS.  */
+void
+store_waitstatus (ourstatus, hoststatus)
+     struct target_waitstatus *ourstatus;
+     int hoststatus;
+{
+  if (WIFEXITED (hoststatus))
+    {
+      ourstatus->kind = TARGET_WAITKIND_EXITED;
+      ourstatus->value.integer = WEXITSTATUS (hoststatus);
+    }
+  else if (!WIFSTOPPED (hoststatus))
+    {
+      ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+      ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
+    }
+  else
+    {
+      ourstatus->kind = TARGET_WAITKIND_STOPPED;
+      ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
+    }
+}
+
 #ifndef CHILD_WAIT
 
 /* Wait for child to do something.  Return pid of child, or -1 in case
-   of error; store status through argument pointer STATUS.  */
+   of error; store status through argument pointer OURSTATUS.  */
 
 static int
-child_wait (pid, status)
+child_wait (pid, ourstatus)
      int pid;
-     int *status;
+     struct target_waitstatus *ourstatus;
 {
   int save_errno;
+  int status;
 
   do {
     if (attach_flag)
       set_sigint_trap();	/* Causes SIGINT to be passed on to the
 				   attached process. */
-    pid = wait (status);
+    pid = wait (&status);
     save_errno = errno;
 
     if (attach_flag)
@@ -93,12 +415,15 @@ child_wait (pid, status)
       {
 	if (save_errno == EINTR)
 	  continue;
-	fprintf (stderr, "Child process unexpectedly missing: %s.\n",
+	fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
 		 safe_strerror (save_errno));
-	*status = 42;	/* Claim it exited with signal 42 */
+	/* Claim it exited with unknown signal.  */
+	ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+	ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
         return -1;
       }
   } while (pid != inferior_pid); /* Some other child died or stopped */
+  store_waitstatus (ourstatus, status);
   return pid;
 }
 #endif /* CHILD_WAIT */
@@ -130,12 +455,12 @@ child_attach (args, from_tty)
 	exec_file = (char *) get_exec_file (0);
 
 	if (exec_file)
-	  printf ("Attaching to program `%s', %s\n", exec_file,
+	  printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
 		  target_pid_to_str (pid));
 	else
-	  printf ("Attaching to %s\n", target_pid_to_str (pid));
+	  printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
 
-	fflush (stdout);
+	gdb_flush (gdb_stdout);
       }
 
     attach (pid);
@@ -168,9 +493,9 @@ child_detach (args, from_tty)
 	char *exec_file = get_exec_file (0);
 	if (exec_file == 0)
 	  exec_file = "";
-	printf ("Detaching from program: %s %s\n", exec_file,
+	printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
 		target_pid_to_str (inferior_pid));
-	fflush (stdout);
+	gdb_flush (gdb_stdout);
       }
     if (args)
       siggnal = atoi (args);
@@ -204,7 +529,7 @@ static void
 child_files_info (ignore)
      struct target_ops *ignore;
 {
-  printf ("\tUsing the running image of %s %s.\n",
+  printf_unfiltered ("\tUsing the running image of %s %s.\n",
 	  attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
 }
 
@@ -235,6 +560,13 @@ ptrace_him (pid)
      int pid;
 {
   push_target (&child_ops);
+
+#ifdef START_INFERIOR_TRAPS_EXPECTED
+  startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
+#else
+  /* One trap to exec the shell, one to exec the program being debugged.  */
+  startup_inferior (2);
+#endif
 }
 
 /* Start an inferior Unix child process and sets inferior_pid to its pid.
@@ -251,7 +583,7 @@ child_create_inferior (exec_file, allargs, env)
   fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him);
   /* We are at the first instruction we care about.  */
   /* Pedal to the metal... */
-  proceed ((CORE_ADDR) -1, 0, 0);
+  proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
 }
 
 static void