Update copyright year range in all GDB files.

[thirdparty/binutils-gdb.git] / gdb / gdbserver / debug.c

diff --git a/gdb/gdbserver/debug.c b/gdb/gdbserver/debug.c
index 44197d2d3251eb6ca46c439c6e24f178fc69b56d..7bb2504570dc5d4e1dec8e6ae444024314d64645 100644 (file)
--- a/gdb/gdbserver/debug.c
+++ b/gdb/gdbserver/debug.c
@@ -1,5 +1,5 @@
 /* Debugging routines for the remote server for GDB.
-   Copyright (C) 2014-2017 Free Software Foundation, Inc.
+   Copyright (C) 2014-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -19,13 +19,51 @@
 #include "server.h"
 #include <chrono>
 
-/* Enable miscellaneous debugging output.  The name is historical - it
-   was originally used to debug LinuxThreads support.  */
+#if !defined (IN_PROCESS_AGENT)
+int remote_debug = 0;
+#endif
+
+/* Output file for debugging.  Default to standard error.  */
+FILE *debug_file = stderr;
+
+/* See debug.h.  */
 int debug_threads;
 
 /* Include timestamps in debugging output.  */
 int debug_timestamp;
 
+#if !defined (IN_PROCESS_AGENT)
+
+/* See debug.h.  */
+
+void
+debug_set_output (const char *new_debug_file)
+{
+  /* Close any existing file and reset to standard error.  */
+  if (debug_file != stderr)
+    {
+      fclose (debug_file);
+    }
+  debug_file = stderr;
+
+  /* Catch empty filenames.  */
+  if (new_debug_file == nullptr || strlen (new_debug_file) == 0)
+    return;
+
+  FILE *fptr = fopen (new_debug_file, "w");
+
+  if (fptr == nullptr)
+    {
+      debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n",
+                   new_debug_file, safe_strerror (errno));
+      return;
+    }
+
+  debug_file = fptr;
+}
+
+#endif
+
 /* Print a debugging message.
    If the text begins a new line it is preceded by a timestamp.
    We don't get fancy with newline checking, we just check whether the
@@ -46,11 +84,11 @@ debug_vprintf (const char *format, va_list ap)
       seconds s = duration_cast<seconds> (now.time_since_epoch ());
       microseconds us = duration_cast<microseconds> (now.time_since_epoch ()) - s;
 
-      fprintf (stderr, "%ld.%06ld ", (long) s.count (), (long) us.count ());
+      fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ());
     }
 #endif
 
-  vfprintf (stderr, format, ap);
+  vfprintf (debug_file, format, ap);
 
 #if !defined (IN_PROCESS_AGENT)
   if (*format)
@@ -65,7 +103,7 @@ debug_vprintf (const char *format, va_list ap)
 void
 debug_flush (void)
 {
-  fflush (stderr);
+  fflush (debug_file);
 }
 
 /* Notify the user that the code is entering FUNCTION_NAME.
@@ -91,3 +129,12 @@ do_debug_exit (const char *function_name)
   if (function_name != NULL)
     debug_printf ("<<<< exiting %s\n", function_name);
 }
+
+/* See debug.h.  */
+
+ssize_t
+debug_write (const void *buf, size_t nbyte)
+{
+  int fd = fileno (debug_file);
+  return write (fd, buf, nbyte);
+}