/* Replay a remote debug session logfile for GDB.
|
/* Replay a remote debug session logfile for GDB.
|
Copyright (C) 1996, 1998, 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2008
|
Copyright (C) 1996, 1998, 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2008
|
Free Software Foundation, Inc.
|
Free Software Foundation, Inc.
|
Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver.
|
Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or
|
the Free Software Foundation; either version 3 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
#include "config.h"
|
#include "config.h"
|
#include <stdio.h>
|
#include <stdio.h>
|
#if HAVE_SYS_FILE_H
|
#if HAVE_SYS_FILE_H
|
#include <sys/file.h>
|
#include <sys/file.h>
|
#endif
|
#endif
|
#if HAVE_SIGNAL_H
|
#if HAVE_SIGNAL_H
|
#include <signal.h>
|
#include <signal.h>
|
#endif
|
#endif
|
#include <ctype.h>
|
#include <ctype.h>
|
#if HAVE_FCNTL_H
|
#if HAVE_FCNTL_H
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#endif
|
#endif
|
#if HAVE_ERRNO_H
|
#if HAVE_ERRNO_H
|
#include <errno.h>
|
#include <errno.h>
|
#endif
|
#endif
|
#ifdef HAVE_STDLIB_H
|
#ifdef HAVE_STDLIB_H
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#endif
|
#endif
|
#ifdef HAVE_STRING_H
|
#ifdef HAVE_STRING_H
|
#include <string.h>
|
#include <string.h>
|
#endif
|
#endif
|
#ifdef HAVE_UNISTD_H
|
#ifdef HAVE_UNISTD_H
|
#include <unistd.h>
|
#include <unistd.h>
|
#endif
|
#endif
|
#ifdef HAVE_NETINET_IN_H
|
#ifdef HAVE_NETINET_IN_H
|
#include <netinet/in.h>
|
#include <netinet/in.h>
|
#endif
|
#endif
|
#ifdef HAVE_SYS_SOCKET_H
|
#ifdef HAVE_SYS_SOCKET_H
|
#include <sys/socket.h>
|
#include <sys/socket.h>
|
#endif
|
#endif
|
#if HAVE_NETDB_H
|
#if HAVE_NETDB_H
|
#include <netdb.h>
|
#include <netdb.h>
|
#endif
|
#endif
|
#if HAVE_NETINET_TCP_H
|
#if HAVE_NETINET_TCP_H
|
#include <netinet/tcp.h>
|
#include <netinet/tcp.h>
|
#endif
|
#endif
|
#if HAVE_MALLOC_H
|
#if HAVE_MALLOC_H
|
#include <malloc.h>
|
#include <malloc.h>
|
#endif
|
#endif
|
|
|
#if USE_WIN32API
|
#if USE_WIN32API
|
#include <winsock.h>
|
#include <winsock.h>
|
#endif
|
#endif
|
|
|
#ifndef HAVE_SOCKLEN_T
|
#ifndef HAVE_SOCKLEN_T
|
typedef int socklen_t;
|
typedef int socklen_t;
|
#endif
|
#endif
|
|
|
/* Sort of a hack... */
|
/* Sort of a hack... */
|
#define EOL (EOF - 1)
|
#define EOL (EOF - 1)
|
|
|
static int remote_desc;
|
static int remote_desc;
|
|
|
#ifdef __MINGW32CE__
|
#ifdef __MINGW32CE__
|
|
|
#ifndef COUNTOF
|
#ifndef COUNTOF
|
#define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
|
#define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
|
#endif
|
#endif
|
|
|
#define errno (GetLastError ())
|
#define errno (GetLastError ())
|
|
|
char *
|
char *
|
strerror (DWORD error)
|
strerror (DWORD error)
|
{
|
{
|
static char buf[1024];
|
static char buf[1024];
|
WCHAR *msgbuf;
|
WCHAR *msgbuf;
|
DWORD lasterr = GetLastError ();
|
DWORD lasterr = GetLastError ();
|
DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM
|
DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM
|
| FORMAT_MESSAGE_ALLOCATE_BUFFER,
|
| FORMAT_MESSAGE_ALLOCATE_BUFFER,
|
NULL,
|
NULL,
|
error,
|
error,
|
0, /* Default language */
|
0, /* Default language */
|
(LPVOID)&msgbuf,
|
(LPVOID)&msgbuf,
|
0,
|
0,
|
NULL);
|
NULL);
|
if (chars != 0)
|
if (chars != 0)
|
{
|
{
|
/* If there is an \r\n appended, zap it. */
|
/* If there is an \r\n appended, zap it. */
|
if (chars >= 2
|
if (chars >= 2
|
&& msgbuf[chars - 2] == '\r'
|
&& msgbuf[chars - 2] == '\r'
|
&& msgbuf[chars - 1] == '\n')
|
&& msgbuf[chars - 1] == '\n')
|
{
|
{
|
chars -= 2;
|
chars -= 2;
|
msgbuf[chars] = 0;
|
msgbuf[chars] = 0;
|
}
|
}
|
|
|
if (chars > ((COUNTOF (buf)) - 1))
|
if (chars > ((COUNTOF (buf)) - 1))
|
{
|
{
|
chars = COUNTOF (buf) - 1;
|
chars = COUNTOF (buf) - 1;
|
msgbuf [chars] = 0;
|
msgbuf [chars] = 0;
|
}
|
}
|
|
|
wcstombs (buf, msgbuf, chars + 1);
|
wcstombs (buf, msgbuf, chars + 1);
|
LocalFree (msgbuf);
|
LocalFree (msgbuf);
|
}
|
}
|
else
|
else
|
sprintf (buf, "unknown win32 error (%ld)", error);
|
sprintf (buf, "unknown win32 error (%ld)", error);
|
|
|
SetLastError (lasterr);
|
SetLastError (lasterr);
|
return buf;
|
return buf;
|
}
|
}
|
|
|
#endif /* __MINGW32CE__ */
|
#endif /* __MINGW32CE__ */
|
|
|
/* Print the system error message for errno, and also mention STRING
|
/* Print the system error message for errno, and also mention STRING
|
as the file name for which the error was encountered.
|
as the file name for which the error was encountered.
|
Then return to command level. */
|
Then return to command level. */
|
|
|
static void
|
static void
|
perror_with_name (char *string)
|
perror_with_name (char *string)
|
{
|
{
|
#ifndef STDC_HEADERS
|
#ifndef STDC_HEADERS
|
extern int errno;
|
extern int errno;
|
#endif
|
#endif
|
const char *err;
|
const char *err;
|
char *combined;
|
char *combined;
|
|
|
err = strerror (errno);
|
err = strerror (errno);
|
if (err == NULL)
|
if (err == NULL)
|
err = "unknown error";
|
err = "unknown error";
|
|
|
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
strcpy (combined, string);
|
strcpy (combined, string);
|
strcat (combined, ": ");
|
strcat (combined, ": ");
|
strcat (combined, err);
|
strcat (combined, err);
|
fprintf (stderr, "\n%s.\n", combined);
|
fprintf (stderr, "\n%s.\n", combined);
|
fflush (stderr);
|
fflush (stderr);
|
exit (1);
|
exit (1);
|
}
|
}
|
|
|
static void
|
static void
|
sync_error (FILE *fp, char *desc, int expect, int got)
|
sync_error (FILE *fp, char *desc, int expect, int got)
|
{
|
{
|
fprintf (stderr, "\n%s\n", desc);
|
fprintf (stderr, "\n%s\n", desc);
|
fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n",
|
fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n",
|
ftell (fp), expect, got);
|
ftell (fp), expect, got);
|
fflush (stderr);
|
fflush (stderr);
|
exit (1);
|
exit (1);
|
}
|
}
|
|
|
static void
|
static void
|
remote_close (void)
|
remote_close (void)
|
{
|
{
|
#ifdef USE_WIN32API
|
#ifdef USE_WIN32API
|
closesocket (remote_desc);
|
closesocket (remote_desc);
|
#else
|
#else
|
close (remote_desc);
|
close (remote_desc);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Open a connection to a remote debugger.
|
/* Open a connection to a remote debugger.
|
NAME is the filename used for communication. */
|
NAME is the filename used for communication. */
|
|
|
static void
|
static void
|
remote_open (char *name)
|
remote_open (char *name)
|
{
|
{
|
if (!strchr (name, ':'))
|
if (!strchr (name, ':'))
|
{
|
{
|
fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name);
|
fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name);
|
fflush (stderr);
|
fflush (stderr);
|
exit (1);
|
exit (1);
|
}
|
}
|
else
|
else
|
{
|
{
|
#ifdef USE_WIN32API
|
#ifdef USE_WIN32API
|
static int winsock_initialized;
|
static int winsock_initialized;
|
#endif
|
#endif
|
char *port_str;
|
char *port_str;
|
int port;
|
int port;
|
struct sockaddr_in sockaddr;
|
struct sockaddr_in sockaddr;
|
socklen_t tmp;
|
socklen_t tmp;
|
int tmp_desc;
|
int tmp_desc;
|
|
|
port_str = strchr (name, ':');
|
port_str = strchr (name, ':');
|
|
|
port = atoi (port_str + 1);
|
port = atoi (port_str + 1);
|
|
|
#ifdef USE_WIN32API
|
#ifdef USE_WIN32API
|
if (!winsock_initialized)
|
if (!winsock_initialized)
|
{
|
{
|
WSADATA wsad;
|
WSADATA wsad;
|
|
|
WSAStartup (MAKEWORD (1, 0), &wsad);
|
WSAStartup (MAKEWORD (1, 0), &wsad);
|
winsock_initialized = 1;
|
winsock_initialized = 1;
|
}
|
}
|
#endif
|
#endif
|
|
|
tmp_desc = socket (PF_INET, SOCK_STREAM, 0);
|
tmp_desc = socket (PF_INET, SOCK_STREAM, 0);
|
if (tmp_desc < 0)
|
if (tmp_desc < 0)
|
perror_with_name ("Can't open socket");
|
perror_with_name ("Can't open socket");
|
|
|
/* Allow rapid reuse of this port. */
|
/* Allow rapid reuse of this port. */
|
tmp = 1;
|
tmp = 1;
|
setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
|
setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
|
sizeof (tmp));
|
sizeof (tmp));
|
|
|
sockaddr.sin_family = PF_INET;
|
sockaddr.sin_family = PF_INET;
|
sockaddr.sin_port = htons (port);
|
sockaddr.sin_port = htons (port);
|
sockaddr.sin_addr.s_addr = INADDR_ANY;
|
sockaddr.sin_addr.s_addr = INADDR_ANY;
|
|
|
if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
|
if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
|
|| listen (tmp_desc, 1))
|
|| listen (tmp_desc, 1))
|
perror_with_name ("Can't bind address");
|
perror_with_name ("Can't bind address");
|
|
|
tmp = sizeof (sockaddr);
|
tmp = sizeof (sockaddr);
|
remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp);
|
remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp);
|
if (remote_desc == -1)
|
if (remote_desc == -1)
|
perror_with_name ("Accept failed");
|
perror_with_name ("Accept failed");
|
|
|
/* Enable TCP keep alive process. */
|
/* Enable TCP keep alive process. */
|
tmp = 1;
|
tmp = 1;
|
setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
|
setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
|
|
|
/* Tell TCP not to delay small packets. This greatly speeds up
|
/* Tell TCP not to delay small packets. This greatly speeds up
|
interactive response. */
|
interactive response. */
|
tmp = 1;
|
tmp = 1;
|
setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
|
setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
|
(char *) &tmp, sizeof (tmp));
|
(char *) &tmp, sizeof (tmp));
|
|
|
#ifndef USE_WIN32API
|
#ifndef USE_WIN32API
|
close (tmp_desc); /* No longer need this */
|
close (tmp_desc); /* No longer need this */
|
|
|
signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbreplay simply
|
signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbreplay simply
|
exits when the remote side dies. */
|
exits when the remote side dies. */
|
#else
|
#else
|
closesocket (tmp_desc); /* No longer need this */
|
closesocket (tmp_desc); /* No longer need this */
|
#endif
|
#endif
|
}
|
}
|
|
|
#if defined(F_SETFL) && defined (FASYNC)
|
#if defined(F_SETFL) && defined (FASYNC)
|
fcntl (remote_desc, F_SETFL, FASYNC);
|
fcntl (remote_desc, F_SETFL, FASYNC);
|
#endif
|
#endif
|
|
|
fprintf (stderr, "Replay logfile using %s\n", name);
|
fprintf (stderr, "Replay logfile using %s\n", name);
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
|
|
static int
|
static int
|
tohex (int ch)
|
tohex (int ch)
|
{
|
{
|
if (ch >= '0' && ch <= '9')
|
if (ch >= '0' && ch <= '9')
|
{
|
{
|
return (ch - '0');
|
return (ch - '0');
|
}
|
}
|
if (ch >= 'A' && ch <= 'F')
|
if (ch >= 'A' && ch <= 'F')
|
{
|
{
|
return (ch - 'A' + 10);
|
return (ch - 'A' + 10);
|
}
|
}
|
if (ch >= 'a' && ch <= 'f')
|
if (ch >= 'a' && ch <= 'f')
|
{
|
{
|
return (ch - 'a' + 10);
|
return (ch - 'a' + 10);
|
}
|
}
|
fprintf (stderr, "\nInvalid hex digit '%c'\n", ch);
|
fprintf (stderr, "\nInvalid hex digit '%c'\n", ch);
|
fflush (stderr);
|
fflush (stderr);
|
exit (1);
|
exit (1);
|
}
|
}
|
|
|
static int
|
static int
|
logchar (FILE *fp)
|
logchar (FILE *fp)
|
{
|
{
|
int ch;
|
int ch;
|
int ch2;
|
int ch2;
|
|
|
ch = fgetc (fp);
|
ch = fgetc (fp);
|
fputc (ch, stdout);
|
fputc (ch, stdout);
|
fflush (stdout);
|
fflush (stdout);
|
switch (ch)
|
switch (ch)
|
{
|
{
|
case '\n':
|
case '\n':
|
ch = EOL;
|
ch = EOL;
|
break;
|
break;
|
case '\\':
|
case '\\':
|
ch = fgetc (fp);
|
ch = fgetc (fp);
|
fputc (ch, stdout);
|
fputc (ch, stdout);
|
fflush (stdout);
|
fflush (stdout);
|
switch (ch)
|
switch (ch)
|
{
|
{
|
case '\\':
|
case '\\':
|
break;
|
break;
|
case 'b':
|
case 'b':
|
ch = '\b';
|
ch = '\b';
|
break;
|
break;
|
case 'f':
|
case 'f':
|
ch = '\f';
|
ch = '\f';
|
break;
|
break;
|
case 'n':
|
case 'n':
|
ch = '\n';
|
ch = '\n';
|
break;
|
break;
|
case 'r':
|
case 'r':
|
ch = '\r';
|
ch = '\r';
|
break;
|
break;
|
case 't':
|
case 't':
|
ch = '\t';
|
ch = '\t';
|
break;
|
break;
|
case 'v':
|
case 'v':
|
ch = '\v';
|
ch = '\v';
|
break;
|
break;
|
case 'x':
|
case 'x':
|
ch2 = fgetc (fp);
|
ch2 = fgetc (fp);
|
fputc (ch2, stdout);
|
fputc (ch2, stdout);
|
fflush (stdout);
|
fflush (stdout);
|
ch = tohex (ch2) << 4;
|
ch = tohex (ch2) << 4;
|
ch2 = fgetc (fp);
|
ch2 = fgetc (fp);
|
fputc (ch2, stdout);
|
fputc (ch2, stdout);
|
fflush (stdout);
|
fflush (stdout);
|
ch |= tohex (ch2);
|
ch |= tohex (ch2);
|
break;
|
break;
|
default:
|
default:
|
/* Treat any other char as just itself */
|
/* Treat any other char as just itself */
|
break;
|
break;
|
}
|
}
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
return (ch);
|
return (ch);
|
}
|
}
|
|
|
/* Accept input from gdb and match with chars from fp (after skipping one
|
/* 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) */
|
blank) up until a \n is read from fp (which is not matched) */
|
|
|
static void
|
static void
|
expect (FILE *fp)
|
expect (FILE *fp)
|
{
|
{
|
int fromlog;
|
int fromlog;
|
unsigned char fromgdb;
|
unsigned char fromgdb;
|
|
|
if ((fromlog = logchar (fp)) != ' ')
|
if ((fromlog = logchar (fp)) != ' ')
|
{
|
{
|
sync_error (fp, "Sync error during gdb read of leading blank", ' ',
|
sync_error (fp, "Sync error during gdb read of leading blank", ' ',
|
fromlog);
|
fromlog);
|
}
|
}
|
do
|
do
|
{
|
{
|
fromlog = logchar (fp);
|
fromlog = logchar (fp);
|
if (fromlog == EOL)
|
if (fromlog == EOL)
|
{
|
{
|
break;
|
break;
|
}
|
}
|
read (remote_desc, &fromgdb, 1);
|
read (remote_desc, &fromgdb, 1);
|
}
|
}
|
while (fromlog == fromgdb);
|
while (fromlog == fromgdb);
|
if (fromlog != EOL)
|
if (fromlog != EOL)
|
{
|
{
|
sync_error (fp, "Sync error during read of gdb packet", fromlog,
|
sync_error (fp, "Sync error during read of gdb packet", fromlog,
|
fromgdb);
|
fromgdb);
|
}
|
}
|
}
|
}
|
|
|
/* Play data back to gdb from fp (after skipping leading blank) up until a
|
/* 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). */
|
\n is read from fp (which is discarded and not sent to gdb). */
|
|
|
static void
|
static void
|
play (FILE *fp)
|
play (FILE *fp)
|
{
|
{
|
int fromlog;
|
int fromlog;
|
char ch;
|
char ch;
|
|
|
if ((fromlog = logchar (fp)) != ' ')
|
if ((fromlog = logchar (fp)) != ' ')
|
{
|
{
|
sync_error (fp, "Sync error skipping blank during write to gdb", ' ',
|
sync_error (fp, "Sync error skipping blank during write to gdb", ' ',
|
fromlog);
|
fromlog);
|
}
|
}
|
while ((fromlog = logchar (fp)) != EOL)
|
while ((fromlog = logchar (fp)) != EOL)
|
{
|
{
|
ch = fromlog;
|
ch = fromlog;
|
write (remote_desc, &ch, 1);
|
write (remote_desc, &ch, 1);
|
}
|
}
|
}
|
}
|
|
|
int
|
int
|
main (int argc, char *argv[])
|
main (int argc, char *argv[])
|
{
|
{
|
FILE *fp;
|
FILE *fp;
|
int ch;
|
int ch;
|
|
|
if (argc < 3)
|
if (argc < 3)
|
{
|
{
|
fprintf (stderr, "Usage: gdbreplay <logfile> <host:port>\n");
|
fprintf (stderr, "Usage: gdbreplay <logfile> <host:port>\n");
|
fflush (stderr);
|
fflush (stderr);
|
exit (1);
|
exit (1);
|
}
|
}
|
fp = fopen (argv[1], "r");
|
fp = fopen (argv[1], "r");
|
if (fp == NULL)
|
if (fp == NULL)
|
{
|
{
|
perror_with_name (argv[1]);
|
perror_with_name (argv[1]);
|
}
|
}
|
remote_open (argv[2]);
|
remote_open (argv[2]);
|
while ((ch = logchar (fp)) != EOF)
|
while ((ch = logchar (fp)) != EOF)
|
{
|
{
|
switch (ch)
|
switch (ch)
|
{
|
{
|
case 'w':
|
case 'w':
|
/* data sent from gdb to gdbreplay, accept and match it */
|
/* data sent from gdb to gdbreplay, accept and match it */
|
expect (fp);
|
expect (fp);
|
break;
|
break;
|
case 'r':
|
case 'r':
|
/* data sent from gdbreplay to gdb, play it */
|
/* data sent from gdbreplay to gdb, play it */
|
play (fp);
|
play (fp);
|
break;
|
break;
|
case 'c':
|
case 'c':
|
/* Command executed by gdb */
|
/* Command executed by gdb */
|
while ((ch = logchar (fp)) != EOL);
|
while ((ch = logchar (fp)) != EOL);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
remote_close ();
|
remote_close ();
|
exit (0);
|
exit (0);
|
}
|
}
|
|
|
