gdbserver: rename source files to .cc

For the same reasons outlined in the previous patch, this patch renames
gdbserver source files to .cc.

I have moved the "-x c++" switch to only those rules that require it.

gdbserver/ChangeLog:

	* Makefile.in: Rename source files from .c to .cc.
	* %.c: Rename to %.cc.
	* configure.ac: Rename server.c to server.cc.
	* configure: Re-generate.

1 files changed, 532 insertions, 0 deletions

diff --git a/gdbserver/gdbreplay.cc b/gdbserver/gdbreplay.cc
new file mode 100644
index 0000000..263fb0e
--- /dev/null
+++ b/gdbserver/gdbreplay.cc
@@ -0,0 +1,532 @@
+/* Replay a remote debug session logfile for GDB.
+   Copyright (C) 1996-2020 Free Software Foundation, Inc.
+   Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "gdbsupport/common-defs.h"
+
+#undef PACKAGE
+#undef PACKAGE_NAME
+#undef PACKAGE_VERSION
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+
+#include <config.h>
+#include "gdbsupport/version.h"
+
+#if HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
+#if HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+#include <ctype.h>
+#if HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#include <unistd.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#if HAVE_NETINET_TCP_H
+#include <netinet/tcp.h>
+#endif
+
+#if USE_WIN32API
+#include <ws2tcpip.h>
+#endif
+
+#include "gdbsupport/netstuff.h"
+#include "gdbsupport/rsp-low.h"
+
+#ifndef HAVE_SOCKLEN_T
+typedef int socklen_t;
+#endif
+
+/* Sort of a hack... */
+#define EOL (EOF - 1)
+
+static int remote_desc;
+
+#ifdef __MINGW32CE__
+
+#ifndef COUNTOF
+#define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
+#endif
+
+#define errno (GetLastError ())
+
+char *
+strerror (DWORD error)
+{
+  static char buf[1024];
+  WCHAR *msgbuf;
+  DWORD lasterr = GetLastError ();
+  DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM
+				| FORMAT_MESSAGE_ALLOCATE_BUFFER,
+				NULL,
+				error,
+				0, /* Default language */
+				(LPVOID)&msgbuf,
+				0,
+				NULL);
+  if (chars != 0)
+    {
+      /* If there is an \r\n appended, zap it.  */
+      if (chars >= 2
+	  && msgbuf[chars - 2] == '\r'
+	  && msgbuf[chars - 1] == '\n')
+	{
+	  chars -= 2;
+	  msgbuf[chars] = 0;
+	}
+
+      if (chars > ((COUNTOF (buf)) - 1))
+	{
+	  chars = COUNTOF (buf) - 1;
+	  msgbuf [chars] = 0;
+	}
+
+      wcstombs (buf, msgbuf, chars + 1);
+      LocalFree (msgbuf);
+    }
+  else
+    sprintf (buf, "unknown win32 error (%ld)", error);
+
+  SetLastError (lasterr);
+  return buf;
+}
+
+#endif /* __MINGW32CE__ */
+
+static void
+sync_error (FILE *fp, const char *desc, int expect, int got)
+{
+  fprintf (stderr, "\n%s\n", desc);
+  fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n",
+	   ftell (fp), expect, got);
+  fflush (stderr);
+  exit (1);
+}
+
+static void
+remote_error (const char *desc)
+{
+  fprintf (stderr, "\n%s\n", desc);
+  fflush (stderr);
+  exit (1);
+}
+
+static void
+remote_close (void)
+{
+#ifdef USE_WIN32API
+  closesocket (remote_desc);
+#else
+  close (remote_desc);
+#endif
+}
+
+/* Open a connection to a remote debugger.
+   NAME is the filename used for communication.  */
+
+static void
+remote_open (char *name)
+{
+  char *last_colon = strrchr (name, ':');
+
+  if (last_colon == NULL)
+    {
+      fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name);
+      fflush (stderr);
+      exit (1);
+    }
+
+#ifdef USE_WIN32API
+  static int winsock_initialized;
+#endif
+  int tmp;
+  int tmp_desc;
+  struct addrinfo hint;
+  struct addrinfo *ainfo;
+
+  memset (&hint, 0, sizeof (hint));
+  /* Assume no prefix will be passed, therefore we should use
+     AF_UNSPEC.  */
+  hint.ai_family = AF_UNSPEC;
+  hint.ai_socktype = SOCK_STREAM;
+  hint.ai_protocol = IPPROTO_TCP;
+
+  parsed_connection_spec parsed = parse_connection_spec (name, &hint);
+
+  if (parsed.port_str.empty ())
+    error (_("Missing port on hostname '%s'"), name);
+
+#ifdef USE_WIN32API
+  if (!winsock_initialized)
+    {
+      WSADATA wsad;
+
+      WSAStartup (MAKEWORD (1, 0), &wsad);
+      winsock_initialized = 1;
+    }
+#endif
+
+  int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (),
+		       &hint, &ainfo);
+
+  if (r != 0)
+    {
+      fprintf (stderr, "%s:%s: cannot resolve name: %s\n",
+	       parsed.host_str.c_str (), parsed.port_str.c_str (),
+	       gai_strerror (r));
+      fflush (stderr);
+      exit (1);
+    }
+
+  scoped_free_addrinfo free_ainfo (ainfo);
+
+  struct addrinfo *p;
+
+  for (p = ainfo; p != NULL; p = p->ai_next)
+    {
+      tmp_desc = socket (p->ai_family, p->ai_socktype, p->ai_protocol);
+
+      if (tmp_desc >= 0)
+	break;
+    }
+
+  if (p == NULL)
+    perror_with_name ("Cannot open socket");
+
+  /* Allow rapid reuse of this port. */
+  tmp = 1;
+  setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
+	      sizeof (tmp));
+
+  switch (p->ai_family)
+    {
+    case AF_INET:
+      ((struct sockaddr_in *) p->ai_addr)->sin_addr.s_addr = INADDR_ANY;
+      break;
+    case AF_INET6:
+      ((struct sockaddr_in6 *) p->ai_addr)->sin6_addr = in6addr_any;
+      break;
+    default:
+      fprintf (stderr, "Invalid 'ai_family' %d\n", p->ai_family);
+      exit (1);
+    }
+
+  if (bind (tmp_desc, p->ai_addr, p->ai_addrlen) != 0)
+    perror_with_name ("Can't bind address");
+
+  if (p->ai_socktype == SOCK_DGRAM)
+    remote_desc = tmp_desc;
+  else
+    {
+      struct sockaddr_storage sockaddr;
+      socklen_t sockaddrsize = sizeof (sockaddr);
+      char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT];
+
+      if (listen (tmp_desc, 1) != 0)
+	perror_with_name ("Can't listen on socket");
+
+      remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr,
+			    &sockaddrsize);
+
+      if (remote_desc == -1)
+	perror_with_name ("Accept failed");
+
+      /* Enable TCP keep alive process. */
+      tmp = 1;
+      setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE,
+		  (char *) &tmp, sizeof (tmp));
+
+      /* Tell TCP not to delay small packets.  This greatly speeds up
+	 interactive response. */
+      tmp = 1;
+      setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
+		  (char *) &tmp, sizeof (tmp));
+
+      if (getnameinfo ((struct sockaddr *) &sockaddr, sockaddrsize,
+		       orig_host, sizeof (orig_host),
+		       orig_port, sizeof (orig_port),
+		       NI_NUMERICHOST | NI_NUMERICSERV) == 0)
+	{
+	  fprintf (stderr, "Remote debugging from host %s, port %s\n",
+		   orig_host, orig_port);
+	  fflush (stderr);
+	}
+
+#ifndef USE_WIN32API
+      close (tmp_desc);		/* No longer need this */
+
+      signal (SIGPIPE, SIG_IGN);	/* If we don't do this, then
+					   gdbreplay simply exits when
+					   the remote side dies.  */
+#else
+      closesocket (tmp_desc);	/* No longer need this */
+#endif
+    }
+
+#if defined(F_SETFL) && defined (FASYNC)
+  fcntl (remote_desc, F_SETFL, FASYNC);
+#endif
+
+  fprintf (stderr, "Replay logfile using %s\n", name);
+  fflush (stderr);
+}
+
+static int
+logchar (FILE *fp)
+{
+  int ch;
+  int ch2;
+
+  ch = fgetc (fp);
+  if (ch != '\r')
+    {
+      fputc (ch, stdout);
+      fflush (stdout);
+    }
+  switch (ch)
+    {
+      /* Treat \r\n as a newline.  */
+    case '\r':
+      ch = fgetc (fp);
+      if (ch == '\n')
+	ch = EOL;
+      else
+	{
+	  ungetc (ch, fp);
+	  ch = '\r';
+	}
+      fputc (ch == EOL ? '\n' : '\r', stdout);
+      fflush (stdout);
+      break;
+    case '\n':
+      ch = EOL;
+      break;
+    case '\\':
+      ch = fgetc (fp);
+      fputc (ch, stdout);
+      fflush (stdout);
+      switch (ch)
+	{
+	case '\\':
+	  break;
+	case 'b':
+	  ch = '\b';
+	  break;
+	case 'f':
+	  ch = '\f';
+	  break;
+	case 'n':
+	  ch = '\n';
+	  break;
+	case 'r':
+	  ch = '\r';
+	  break;
+	case 't':
+	  ch = '\t';
+	  break;
+	case 'v':
+	  ch = '\v';
+	  break;
+	case 'x':
+	  ch2 = fgetc (fp);
+	  fputc (ch2, stdout);
+	  fflush (stdout);
+	  ch = fromhex (ch2) << 4;
+	  ch2 = fgetc (fp);
+	  fputc (ch2, stdout);
+	  fflush (stdout);
+	  ch |= fromhex (ch2);
+	  break;
+	default:
+	  /* Treat any other char as just itself */
+	  break;
+	}
+    default:
+      break;
+    }
+  return (ch);
+}
+
+static int
+gdbchar (int desc)
+{
+  unsigned char fromgdb;
+
+  if (read (desc, &fromgdb, 1) != 1)
+    return -1;
+  else
+    return fromgdb;
+}
+
+/* Accept input from gdb and match with chars from fp (after skipping one
+   blank) up until a \n is read from fp (which is not matched) */
+
+static void
+expect (FILE *fp)
+{
+  int fromlog;
+  int fromgdb;
+
+  if ((fromlog = logchar (fp)) != ' ')
+    {
+      sync_error (fp, "Sync error during gdb read of leading blank", ' ',
+		  fromlog);
+    }
+  do
+    {
+      fromlog = logchar (fp);
+      if (fromlog == EOL)
+	break;
+      fromgdb = gdbchar (remote_desc);
+      if (fromgdb < 0)
+	remote_error ("Error during read from gdb");
+    }
+  while (fromlog == fromgdb);
+
+  if (fromlog != EOL)
+    {
+      sync_error (fp, "Sync error during read of gdb packet from log", fromlog,
+		  fromgdb);
+    }
+}
+
+/* Play data back to gdb from fp (after skipping leading blank) up until a
+   \n is read from fp (which is discarded and not sent to gdb). */
+
+static void
+play (FILE *fp)
+{
+  int fromlog;
+  char ch;
+
+  if ((fromlog = logchar (fp)) != ' ')
+    {
+      sync_error (fp, "Sync error skipping blank during write to gdb", ' ',
+		  fromlog);
+    }
+  while ((fromlog = logchar (fp)) != EOL)
+    {
+      ch = fromlog;
+      if (write (remote_desc, &ch, 1) != 1)
+	remote_error ("Error during write to gdb");
+    }
+}
+
+static void
+gdbreplay_version (void)
+{
+  printf ("GNU gdbreplay %s%s\n"
+	  "Copyright (C) 2020 Free Software Foundation, Inc.\n"
+	  "gdbreplay is free software, covered by "
+	  "the GNU General Public License.\n"
+	  "This gdbreplay was configured as \"%s\"\n",
+	  PKGVERSION, version, host_name);
+}
+
+static void
+gdbreplay_usage (FILE *stream)
+{
+  fprintf (stream, "Usage:\tgdbreplay LOGFILE HOST:PORT\n");
+  if (REPORT_BUGS_TO[0] && stream == stdout)
+    fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO);
+}
+
+/* Main function.  This is called by the real "main" function,
+   wrapped in a TRY_CATCH that handles any uncaught exceptions.  */
+
+static void ATTRIBUTE_NORETURN
+captured_main (int argc, char *argv[])
+{
+  FILE *fp;
+  int ch;
+
+  if (argc >= 2 && strcmp (argv[1], "--version") == 0)
+    {
+      gdbreplay_version ();
+      exit (0);
+    }
+  if (argc >= 2 && strcmp (argv[1], "--help") == 0)
+    {
+      gdbreplay_usage (stdout);
+      exit (0);
+    }
+
+  if (argc < 3)
+    {
+      gdbreplay_usage (stderr);
+      exit (1);
+    }
+  fp = fopen (argv[1], "r");
+  if (fp == NULL)
+    {
+      perror_with_name (argv[1]);
+    }
+  remote_open (argv[2]);
+  while ((ch = logchar (fp)) != EOF)
+    {
+      switch (ch)
+	{
+	case 'w':
+	  /* data sent from gdb to gdbreplay, accept and match it */
+	  expect (fp);
+	  break;
+	case 'r':
+	  /* data sent from gdbreplay to gdb, play it */
+	  play (fp);
+	  break;
+	case 'c':
+	  /* Command executed by gdb */
+	  while ((ch = logchar (fp)) != EOL);
+	  break;
+	}
+    }
+  remote_close ();
+  exit (0);
+}
+
+int
+main (int argc, char *argv[])
+{
+  try
+    {
+      captured_main (argc, argv);
+    }
+  catch (const gdb_exception &exception)
+    {
+      if (exception.reason == RETURN_ERROR)
+	{
+	  fflush (stdout);
+	  fprintf (stderr, "%s\n", exception.what ());
+	}
+
+      exit (1);
+    }
+
+  gdb_assert_not_reached ("captured_main should never return");
+}