* main.c (main): Check for NULL from getenv on CYGWIN32.

        * gdbtk.c (_initialize_gdbtk): Get rid of the console. Patch from
        Chris Faylor (cgf@cygnus.com).

        * configure.in: Link cygwin32 with subsystem console.

        * configure: Regenerated

1 files changed, 92 insertions, 67 deletions

diff --git a/gdb/main.c b/gdb/main.c
index 11b5f87..00d4695 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -42,8 +42,8 @@ static int top_level_val;
    ugly if it had to use catch_errors each time.  */
 
 #define SET_TOP_LEVEL() \
-  (((top_level_val = setjmp (error_return)) \
-    ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
+  (((top_level_val = SIGSETJMP (error_return)) \
+    ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (SIGJMP_BUF))) \
    , top_level_val)
 
 /* If nonzero, display time usage both at startup and for each command.  */
@@ -54,7 +54,12 @@ int display_time;
 
 int display_space;
 
-extern void gdb_init PARAMS ((void));
+static void print_gdb_help PARAMS ((GDB_FILE *));
+extern void gdb_init PARAMS ((char *));
+#ifdef __CYGWIN32__
+#include <windows.h> /* for MAX_PATH */
+extern void cygwin32_conv_to_posix_path (const char *, char *);
+#endif
 
 int
 main (argc, argv)
@@ -333,7 +338,7 @@ main (argc, argv)
       quiet = 1;
   }
 
-  gdb_init ();
+  gdb_init (argv[0]);
 
   /* Do these (and anything which might call wrap_here or *_filtered)
      after initialize_all_files.  */
@@ -347,52 +352,8 @@ main (argc, argv)
 
   if (print_help)
     {
-      /* --version is intentionally not documented here, because we
-	 are printing the version here, and the help is long enough
-	 already.  */
-
-      print_gdb_version (gdb_stdout);
-      /* Make sure the output gets printed.  */
-      wrap_here ("");
-      printf_filtered ("\n");
-
-      /* But don't use *_filtered here.  We don't want to prompt for continue
-	 no matter how small the screen or how much we're going to print.  */
-      fputs_unfiltered ("\
-This is the GNU debugger.  Usage:\n\
-    gdb [options] [executable-file [core-file or process-id]]\n\
-Options:\n\
-  --help             Print this message.\n\
-  --quiet            Do not print version number on startup.\n\
-  --fullname         Output information used by emacs-GDB interface.\n\
-  --epoch            Output information used by epoch emacs-GDB interface.\n\
-", gdb_stdout);
-      fputs_unfiltered ("\
-  --batch            Exit after processing options.\n\
-  --nx               Do not read .gdbinit file.\n\
-  --tty=TTY          Use TTY for input/output by the program being debugged.\n\
-  --cd=DIR           Change current directory to DIR.\n\
-  --directory=DIR    Search for source files in DIR.\n\
-", gdb_stdout);
-      fputs_unfiltered ("\
-  --command=FILE     Execute GDB commands from FILE.\n\
-  --symbols=SYMFILE  Read symbols from SYMFILE.\n\
-  --exec=EXECFILE    Use EXECFILE as the executable.\n\
-  --se=FILE          Use FILE as symbol file and executable file.\n\
-", gdb_stdout);
-      fputs_unfiltered ("\
-  --core=COREFILE    Analyze the core dump COREFILE.\n\
-  -b BAUDRATE        Set serial port baud rate used for remote debugging.\n\
-  --mapped           Use mapped symbol files if supported on this system.\n\
-  --readnow          Fully read symbol files on first access.\n\
-  --nw		     Do not use a window interface.\n\
-", gdb_stdout);
-#ifdef ADDITIONAL_OPTION_HELP
-      fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout);
-#endif
-      fputs_unfiltered ("\n\
-For more information, type \"help\" from within GDB, or consult the\n\
-GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
+      print_gdb_help (gdb_stdout);
+      fputs_unfiltered ("\n", gdb_stdout);
       exit (0);
     }
 
@@ -400,7 +361,6 @@ GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
     {
       /* Print all the junk at the top, with trailing "..." if we are about
 	 to read a symbol file (possibly slowly).  */
-      print_gnu_advertisement ();
       print_gdb_version (gdb_stdout);
       if (symarg)
 	printf_filtered ("..");
@@ -418,12 +378,26 @@ GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
      *before* all the command line arguments are processed; it sets
      global parameters, which are independent of what file you are
      debugging or what directory you are in.  */
-  homedir = getenv ("HOME");
+#ifdef __CYGWIN32__
+  {
+    char * tmp = getenv ("HOME");
+    
+    if (tmp != NULL)
+      {
+        homedir = (char *) alloca (MAX_PATH+1);
+        cygwin32_conv_to_posix_path (tmp, homedir);
+      } else {
+        homedir = NULL;
+      }
+  }
+#else
+  homedir = getenv ("HOME");  
+#endif
   if (homedir)
     {
-      homeinit = (char *) alloca (strlen (getenv ("HOME")) +
+      homeinit = (char *) alloca (strlen (homedir) +
 				  strlen (gdbinit) + 10);
-      strcpy (homeinit, getenv ("HOME"));
+      strcpy (homeinit, homedir);
       strcat (homeinit, "/");
       strcat (homeinit, gdbinit);
 
@@ -583,7 +557,7 @@ GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
   /* The default command loop. 
      The WIN32 Gui calls this main to set up gdb's state, and 
      has its own command loop. */
-#ifndef _WIN32
+#if !defined _WIN32 || defined __GNUC__
   while (1)
     {
       if (!SET_TOP_LEVEL ())
@@ -604,6 +578,57 @@ GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
 #endif
 
 }
+
+/* Don't use *_filtered for printing help.  We don't want to prompt
+   for continue no matter how small the screen or how much we're going
+   to print.  */
+
+static void
+print_gdb_help (stream)
+  GDB_FILE *stream;
+{
+      fputs_unfiltered ("\
+This is the GNU debugger.  Usage:\n\n\
+    gdb [options] [executable-file [core-file or process-id]]\n\n\
+Options:\n\n\
+", stream);
+      fputs_unfiltered ("\
+  -b BAUDRATE        Set serial port baud rate used for remote debugging.\n\
+  --batch            Exit after processing options.\n\
+  --cd=DIR           Change current directory to DIR.\n\
+  --command=FILE     Execute GDB commands from FILE.\n\
+  --core=COREFILE    Analyze the core dump COREFILE.\n\
+", stream);
+      fputs_unfiltered ("\
+  --directory=DIR    Search for source files in DIR.\n\
+  --epoch            Output information used by epoch emacs-GDB interface.\n\
+  --exec=EXECFILE    Use EXECFILE as the executable.\n\
+  --fullname         Output information used by emacs-GDB interface.\n\
+  --help             Print this message.\n\
+", stream);
+      fputs_unfiltered ("\
+  --mapped           Use mapped symbol files if supported on this system.\n\
+  --nw		     Do not use a window interface.\n\
+  --nx               Do not read .gdbinit file.\n\
+  --quiet            Do not print version number on startup.\n\
+  --readnow          Fully read symbol files on first access.\n\
+", stream);
+      fputs_unfiltered ("\
+  --se=FILE          Use FILE as symbol file and executable file.\n\
+  --symbols=SYMFILE  Read symbols from SYMFILE.\n\
+  --tty=TTY          Use TTY for input/output by the program being debugged.\n\
+  --version          Print version information and then exit.\n\
+", stream);
+#ifdef ADDITIONAL_OPTION_HELP
+      fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream);
+#endif
+      fputs_unfiltered ("\n\
+For more information, type \"help\" from within GDB, or consult the\n\
+GDB manual (available as on-line info or a printed manual).\n\
+Report bugs to \"bug-gdb@prep.ai.mit.edu\".\
+", stream);
+}
+
 
 void
 init_proc ()
@@ -616,21 +641,21 @@ proc_remove_foreign (pid)
 {
 }
 
+/* All I/O sent to the *_filtered and *_unfiltered functions eventually ends up
+   here.  The fputs_unfiltered_hook is primarily used by GUIs to collect all
+   output and send it to the GUI, instead of the controlling terminal.  Only
+   output to gdb_stdout and gdb_stderr are sent to the hook.  Everything else
+   is sent on to fputs to allow file I/O to be handled appropriately.  */
+
 void
 fputs_unfiltered (linebuffer, stream)
      const char *linebuffer;
      FILE *stream;
 {
-  if (fputs_unfiltered_hook)
-    {
-      /* FIXME: I think we should only be doing this for stdout or stderr.
-	 Either that or we should be passing stream to the hook so it can
-	 deal with it.  If that is cleaned up, this function can go back
-	 into utils.c and the fputs_unfiltered_hook can replace the current
-	 ability to avoid this function by not linking with main.c.  */
-      fputs_unfiltered_hook (linebuffer, stream);
-      return;
-    }
-
-  fputs (linebuffer, stream);
+  if (fputs_unfiltered_hook
+      && (stream == gdb_stdout
+	  || stream == gdb_stderr))
+    fputs_unfiltered_hook (linebuffer, stream);
+  else
+    fputs (linebuffer, stream);
 }