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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [gdbserver/] [gdbreplay.c] - Blame information for rev 866

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Line No. Rev Author Line
1 24 jeremybenn
/* Replay a remote debug session logfile for GDB.
2
   Copyright (C) 1996, 1998, 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2008
3
   Free Software Foundation, Inc.
4
   Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver.
5
 
6
   This file is part of GDB.
7
 
8
   This program is free software; you can redistribute it and/or modify
9
   it under the terms of the GNU General Public License as published by
10
   the Free Software Foundation; either version 3 of the License, or
11
   (at your option) any later version.
12
 
13
   This program is distributed in the hope that it will be useful,
14
   but WITHOUT ANY WARRANTY; without even the implied warranty of
15
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
   GNU General Public License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
 
21
#include "config.h"
22
#include <stdio.h>
23
#if HAVE_SYS_FILE_H
24
#include <sys/file.h>
25
#endif
26
#if HAVE_SIGNAL_H
27
#include <signal.h>
28
#endif
29
#include <ctype.h>
30
#if HAVE_FCNTL_H
31
#include <fcntl.h>
32
#endif
33
#if HAVE_ERRNO_H
34
#include <errno.h>
35
#endif
36
#ifdef HAVE_STDLIB_H
37
#include <stdlib.h>
38
#endif
39
#ifdef HAVE_STRING_H
40
#include <string.h>
41
#endif
42
#ifdef HAVE_UNISTD_H
43
#include <unistd.h>
44
#endif
45
#ifdef HAVE_NETINET_IN_H
46
#include <netinet/in.h>
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#endif
48
#ifdef HAVE_SYS_SOCKET_H
49
#include <sys/socket.h>
50
#endif
51
#if HAVE_NETDB_H
52
#include <netdb.h>
53
#endif
54
#if HAVE_NETINET_TCP_H
55
#include <netinet/tcp.h>
56
#endif
57
#if HAVE_MALLOC_H
58
#include <malloc.h>
59
#endif
60
 
61
#if USE_WIN32API
62
#include <winsock.h>
63
#endif
64
 
65
#ifndef HAVE_SOCKLEN_T
66
typedef int socklen_t;
67
#endif
68
 
69
/* Sort of a hack... */
70
#define EOL (EOF - 1)
71
 
72
static int remote_desc;
73
 
74
#ifdef __MINGW32CE__
75
 
76
#ifndef COUNTOF
77
#define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
78
#endif
79
 
80
#define errno (GetLastError ())
81
 
82
char *
83
strerror (DWORD error)
84
{
85
  static char buf[1024];
86
  WCHAR *msgbuf;
87
  DWORD lasterr = GetLastError ();
88
  DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM
89
                                | FORMAT_MESSAGE_ALLOCATE_BUFFER,
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                                NULL,
91
                                error,
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                                0, /* Default language */
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                                (LPVOID)&msgbuf,
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                                0,
95
                                NULL);
96
  if (chars != 0)
97
    {
98
      /* If there is an \r\n appended, zap it.  */
99
      if (chars >= 2
100
          && msgbuf[chars - 2] == '\r'
101
          && msgbuf[chars - 1] == '\n')
102
        {
103
          chars -= 2;
104
          msgbuf[chars] = 0;
105
        }
106
 
107
      if (chars > ((COUNTOF (buf)) - 1))
108
        {
109
          chars = COUNTOF (buf) - 1;
110
          msgbuf [chars] = 0;
111
        }
112
 
113
      wcstombs (buf, msgbuf, chars + 1);
114
      LocalFree (msgbuf);
115
    }
116
  else
117
    sprintf (buf, "unknown win32 error (%ld)", error);
118
 
119
  SetLastError (lasterr);
120
  return buf;
121
}
122
 
123
#endif /* __MINGW32CE__ */
124
 
125
/* Print the system error message for errno, and also mention STRING
126
   as the file name for which the error was encountered.
127
   Then return to command level.  */
128
 
129
static void
130
perror_with_name (char *string)
131
{
132
#ifndef STDC_HEADERS
133
  extern int errno;
134
#endif
135
  const char *err;
136
  char *combined;
137
 
138
  err = strerror (errno);
139
  if (err == NULL)
140
    err = "unknown error";
141
 
142
  combined = (char *) alloca (strlen (err) + strlen (string) + 3);
143
  strcpy (combined, string);
144
  strcat (combined, ": ");
145
  strcat (combined, err);
146
  fprintf (stderr, "\n%s.\n", combined);
147
  fflush (stderr);
148
  exit (1);
149
}
150
 
151
static void
152
sync_error (FILE *fp, char *desc, int expect, int got)
153
{
154
  fprintf (stderr, "\n%s\n", desc);
155
  fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n",
156
           ftell (fp), expect, got);
157
  fflush (stderr);
158
  exit (1);
159
}
160
 
161
static void
162
remote_close (void)
163
{
164
#ifdef USE_WIN32API
165
  closesocket (remote_desc);
166
#else
167
  close (remote_desc);
168
#endif
169
}
170
 
171
/* Open a connection to a remote debugger.
172
   NAME is the filename used for communication.  */
173
 
174
static void
175
remote_open (char *name)
176
{
177
  if (!strchr (name, ':'))
178
    {
179
      fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name);
180
      fflush (stderr);
181
      exit (1);
182
    }
183
  else
184
    {
185
#ifdef USE_WIN32API
186
      static int winsock_initialized;
187
#endif
188
      char *port_str;
189
      int port;
190
      struct sockaddr_in sockaddr;
191
      socklen_t tmp;
192
      int tmp_desc;
193
 
194
      port_str = strchr (name, ':');
195
 
196
      port = atoi (port_str + 1);
197
 
198
#ifdef USE_WIN32API
199
      if (!winsock_initialized)
200
        {
201
          WSADATA wsad;
202
 
203
          WSAStartup (MAKEWORD (1, 0), &wsad);
204
          winsock_initialized = 1;
205
        }
206
#endif
207
 
208
      tmp_desc = socket (PF_INET, SOCK_STREAM, 0);
209
      if (tmp_desc < 0)
210
        perror_with_name ("Can't open socket");
211
 
212
      /* Allow rapid reuse of this port. */
213
      tmp = 1;
214
      setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
215
                  sizeof (tmp));
216
 
217
      sockaddr.sin_family = PF_INET;
218
      sockaddr.sin_port = htons (port);
219
      sockaddr.sin_addr.s_addr = INADDR_ANY;
220
 
221
      if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
222
          || listen (tmp_desc, 1))
223
        perror_with_name ("Can't bind address");
224
 
225
      tmp = sizeof (sockaddr);
226
      remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp);
227
      if (remote_desc == -1)
228
        perror_with_name ("Accept failed");
229
 
230
      /* Enable TCP keep alive process. */
231
      tmp = 1;
232
      setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
233
 
234
      /* Tell TCP not to delay small packets.  This greatly speeds up
235
         interactive response. */
236
      tmp = 1;
237
      setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
238
                  (char *) &tmp, sizeof (tmp));
239
 
240
#ifndef USE_WIN32API
241
      close (tmp_desc);         /* No longer need this */
242
 
243
      signal (SIGPIPE, SIG_IGN);        /* If we don't do this, then gdbreplay simply
244
                                           exits when the remote side dies.  */
245
#else
246
      closesocket (tmp_desc);   /* No longer need this */
247
#endif
248
    }
249
 
250
#if defined(F_SETFL) && defined (FASYNC)
251
  fcntl (remote_desc, F_SETFL, FASYNC);
252
#endif
253
 
254
  fprintf (stderr, "Replay logfile using %s\n", name);
255
  fflush (stderr);
256
}
257
 
258
static int
259
tohex (int ch)
260
{
261
  if (ch >= '0' && ch <= '9')
262
    {
263
      return (ch - '0');
264
    }
265
  if (ch >= 'A' && ch <= 'F')
266
    {
267
      return (ch - 'A' + 10);
268
    }
269
  if (ch >= 'a' && ch <= 'f')
270
    {
271
      return (ch - 'a' + 10);
272
    }
273
  fprintf (stderr, "\nInvalid hex digit '%c'\n", ch);
274
  fflush (stderr);
275
  exit (1);
276
}
277
 
278
static int
279
logchar (FILE *fp)
280
{
281
  int ch;
282
  int ch2;
283
 
284
  ch = fgetc (fp);
285
  fputc (ch, stdout);
286
  fflush (stdout);
287
  switch (ch)
288
    {
289
    case '\n':
290
      ch = EOL;
291
      break;
292
    case '\\':
293
      ch = fgetc (fp);
294
      fputc (ch, stdout);
295
      fflush (stdout);
296
      switch (ch)
297
        {
298
        case '\\':
299
          break;
300
        case 'b':
301
          ch = '\b';
302
          break;
303
        case 'f':
304
          ch = '\f';
305
          break;
306
        case 'n':
307
          ch = '\n';
308
          break;
309
        case 'r':
310
          ch = '\r';
311
          break;
312
        case 't':
313
          ch = '\t';
314
          break;
315
        case 'v':
316
          ch = '\v';
317
          break;
318
        case 'x':
319
          ch2 = fgetc (fp);
320
          fputc (ch2, stdout);
321
          fflush (stdout);
322
          ch = tohex (ch2) << 4;
323
          ch2 = fgetc (fp);
324
          fputc (ch2, stdout);
325
          fflush (stdout);
326
          ch |= tohex (ch2);
327
          break;
328
        default:
329
          /* Treat any other char as just itself */
330
          break;
331
        }
332
    default:
333
      break;
334
    }
335
  return (ch);
336
}
337
 
338
/* Accept input from gdb and match with chars from fp (after skipping one
339
   blank) up until a \n is read from fp (which is not matched) */
340
 
341
static void
342
expect (FILE *fp)
343
{
344
  int fromlog;
345
  unsigned char fromgdb;
346
 
347
  if ((fromlog = logchar (fp)) != ' ')
348
    {
349
      sync_error (fp, "Sync error during gdb read of leading blank", ' ',
350
                  fromlog);
351
    }
352
  do
353
    {
354
      fromlog = logchar (fp);
355
      if (fromlog == EOL)
356
        {
357
          break;
358
        }
359
      read (remote_desc, &fromgdb, 1);
360
    }
361
  while (fromlog == fromgdb);
362
  if (fromlog != EOL)
363
    {
364
      sync_error (fp, "Sync error during read of gdb packet", fromlog,
365
                  fromgdb);
366
    }
367
}
368
 
369
/* Play data back to gdb from fp (after skipping leading blank) up until a
370
   \n is read from fp (which is discarded and not sent to gdb). */
371
 
372
static void
373
play (FILE *fp)
374
{
375
  int fromlog;
376
  char ch;
377
 
378
  if ((fromlog = logchar (fp)) != ' ')
379
    {
380
      sync_error (fp, "Sync error skipping blank during write to gdb", ' ',
381
                  fromlog);
382
    }
383
  while ((fromlog = logchar (fp)) != EOL)
384
    {
385
      ch = fromlog;
386
      write (remote_desc, &ch, 1);
387
    }
388
}
389
 
390
int
391
main (int argc, char *argv[])
392
{
393
  FILE *fp;
394
  int ch;
395
 
396
  if (argc < 3)
397
    {
398
      fprintf (stderr, "Usage: gdbreplay <logfile> <host:port>\n");
399
      fflush (stderr);
400
      exit (1);
401
    }
402
  fp = fopen (argv[1], "r");
403
  if (fp == NULL)
404
    {
405
      perror_with_name (argv[1]);
406
    }
407
  remote_open (argv[2]);
408
  while ((ch = logchar (fp)) != EOF)
409
    {
410
      switch (ch)
411
        {
412
        case 'w':
413
          /* data sent from gdb to gdbreplay, accept and match it */
414
          expect (fp);
415
          break;
416
        case 'r':
417
          /* data sent from gdbreplay to gdb, play it */
418
          play (fp);
419
          break;
420
        case 'c':
421
          /* Command executed by gdb */
422
          while ((ch = logchar (fp)) != EOL);
423
          break;
424
        }
425
    }
426
  remote_close ();
427
  exit (0);
428
}

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