| 1 | /* Test-driver for the remote-virtual-component simulator framework |
| 2 | for GDB, the GNU Debugger. |
| 3 | |
| 4 | Copyright 2006-2020 Free Software Foundation, Inc. |
| 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 | /* Avoid any problems whatsoever building this program if we're not |
| 22 | also building hardware support. */ |
| 23 | |
| 24 | #if !WITH_HW |
| 25 | int |
| 26 | main (int argc, char *argv[]) |
| 27 | { |
| 28 | return 2; |
| 29 | } |
| 30 | #else |
| 31 | |
| 32 | #ifdef HAVE_CONFIG_H |
| 33 | #include "config.h" |
| 34 | #endif |
| 35 | |
| 36 | #include "getopt.h" |
| 37 | #include "libiberty.h" |
| 38 | |
| 39 | #include <stdio.h> |
| 40 | |
| 41 | #ifdef HAVE_UNISTD_H |
| 42 | #include <unistd.h> |
| 43 | #endif |
| 44 | #ifdef HAVE_STDLIB_H |
| 45 | #include <stdlib.h> |
| 46 | #endif |
| 47 | #ifdef HAVE_STRING_H |
| 48 | #include <string.h> |
| 49 | #endif |
| 50 | |
| 51 | #ifdef HAVE_SYS_TYPES_H |
| 52 | #include <sys/types.h> |
| 53 | #endif |
| 54 | |
| 55 | #ifdef HAVE_SYS_TIME_H |
| 56 | #include <sys/time.h> |
| 57 | #endif |
| 58 | |
| 59 | #ifdef HAVE_SYS_SELECT_H |
| 60 | #include <sys/select.h> |
| 61 | #endif |
| 62 | |
| 63 | #ifdef HAVE_ERRNO_H |
| 64 | #include <errno.h> |
| 65 | #endif |
| 66 | |
| 67 | /* Not guarded in dv-sockser.c, so why here. */ |
| 68 | #include <netinet/in.h> |
| 69 | #include <arpa/inet.h> |
| 70 | #include <netdb.h> |
| 71 | #include <sys/socket.h> |
| 72 | |
| 73 | enum rv_command { |
| 74 | RV_READ_CMD = 0, |
| 75 | RV_WRITE_CMD = 1, |
| 76 | RV_IRQ_CMD = 2, |
| 77 | RV_MEM_RD_CMD = 3, |
| 78 | RV_MEM_WR_CMD = 4, |
| 79 | RV_MBOX_HANDLE_CMD = 5, |
| 80 | RV_MBOX_PUT_CMD = 6, |
| 81 | RV_WATCHDOG_CMD = 7 |
| 82 | }; |
| 83 | |
| 84 | enum opts { OPT_PORT = 1, OPT_TIMEOUT, OPT_VERBOSE }; |
| 85 | |
| 86 | struct option longopts[] = |
| 87 | { |
| 88 | {"port", required_argument, NULL, OPT_PORT}, |
| 89 | {"timeout", required_argument, NULL, OPT_TIMEOUT}, |
| 90 | {"verbose", no_argument, NULL, OPT_VERBOSE}, |
| 91 | {NULL, 0, NULL, 0} |
| 92 | }; |
| 93 | |
| 94 | int port = 10000; |
| 95 | time_t timeout = 30000; |
| 96 | char *progname = "(unknown)"; |
| 97 | int verbose = 0; |
| 98 | |
| 99 | /* Required forward-declarations. */ |
| 100 | static void handle_input_file (int, char *); |
| 101 | |
| 102 | /* Set up a "server" listening to the port in PORT for a raw TCP |
| 103 | connection. Return a file descriptor for the connection or -1 on |
| 104 | error. */ |
| 105 | |
| 106 | static int setupsocket (void) |
| 107 | { |
| 108 | int s; |
| 109 | socklen_t len; |
| 110 | int reuse = 1; |
| 111 | struct sockaddr_in sa_in; |
| 112 | struct sockaddr_in from; |
| 113 | |
| 114 | len = sizeof (from); |
| 115 | memset (&from, 0, len); |
| 116 | memset (&sa_in, 0, sizeof (sa_in)); |
| 117 | |
| 118 | s = socket (AF_INET, SOCK_STREAM, 0); |
| 119 | if (s == -1) |
| 120 | return -1; |
| 121 | |
| 122 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof reuse) != 0) |
| 123 | return -1; |
| 124 | |
| 125 | sa_in.sin_port = htons (port); |
| 126 | sa_in.sin_family = AF_INET; |
| 127 | |
| 128 | if (bind (s, (struct sockaddr *) & sa_in, sizeof sa_in) < 0) |
| 129 | return -1; |
| 130 | |
| 131 | if (listen (s, 1) < 0) |
| 132 | return -1; |
| 133 | |
| 134 | return accept (s, (struct sockaddr *) &from, &len); |
| 135 | } |
| 136 | |
| 137 | /* Basic host-to-little-endian 32-bit value. Could use the BFD |
| 138 | machinery, but let's avoid it for this only dependency. */ |
| 139 | |
| 140 | static void |
| 141 | h2le32 (unsigned char *dest, unsigned int val) |
| 142 | { |
| 143 | dest[0] = val & 255; |
| 144 | dest[1] = (val >> 8) & 255; |
| 145 | dest[2] = (val >> 16) & 255; |
| 146 | dest[3] = (val >> 24) & 255; |
| 147 | } |
| 148 | |
| 149 | /* Send a blob of data. */ |
| 150 | |
| 151 | static void |
| 152 | send_output (int fd, unsigned char *buf, int nbytes) |
| 153 | { |
| 154 | while (nbytes > 0) |
| 155 | { |
| 156 | ssize_t written = write (fd, buf, nbytes); |
| 157 | if (written < 0) |
| 158 | { |
| 159 | fprintf (stderr, "%s: write to socket failed: %s\n", |
| 160 | progname, strerror (errno)); |
| 161 | exit (2); |
| 162 | } |
| 163 | nbytes -= written; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | /* Receive a blob of data, NBYTES large. Compare to the first NCOMP |
| 168 | bytes of BUF; if not a match, write error message to stderr and |
| 169 | exit (2). Else put it in buf. */ |
| 170 | |
| 171 | static void |
| 172 | expect_input (int fd, unsigned char *buf, int nbytes, int ncomp) |
| 173 | { |
| 174 | unsigned char byt; |
| 175 | int i; |
| 176 | |
| 177 | for (i = 0; i < nbytes; i++) |
| 178 | { |
| 179 | int r; |
| 180 | |
| 181 | do |
| 182 | { |
| 183 | errno = 0; |
| 184 | r = read (fd, &byt, 1); |
| 185 | } |
| 186 | while (r <= 0 && (r == 0 || errno == EAGAIN)); |
| 187 | |
| 188 | if (r != 1) |
| 189 | { |
| 190 | fprintf (stderr, "%s: read from socket failed: %s", |
| 191 | progname, strerror (errno)); |
| 192 | exit (2); |
| 193 | } |
| 194 | |
| 195 | if (i < ncomp && byt != buf[i]) |
| 196 | { |
| 197 | int j; |
| 198 | fprintf (stderr, "%s: unexpected input,\n ", progname); |
| 199 | if (i == 0) |
| 200 | fprintf (stderr, "nothing,"); |
| 201 | else |
| 202 | for (j = 0; j < i; j++) |
| 203 | fprintf (stderr, "%02x", buf[j]); |
| 204 | fprintf (stderr, "\nthen %02x instead of %02x\n", byt, buf[i]); |
| 205 | exit (2); |
| 206 | } |
| 207 | else |
| 208 | buf[i] = byt; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /* Handle everything about a nil-terminated line of input. |
| 213 | Call exit (2) on error with error text on stderr. */ |
| 214 | |
| 215 | static void |
| 216 | handle_input (int fd, char *buf, char *fname, int lineno) |
| 217 | { |
| 218 | int nbytes = 0; |
| 219 | int n = -1; |
| 220 | char *s = buf + 2; |
| 221 | unsigned int data; |
| 222 | static unsigned char bytes[1024]; |
| 223 | int i; |
| 224 | |
| 225 | memset (bytes, 0, sizeof bytes); |
| 226 | lineno++; |
| 227 | |
| 228 | if (buf[1] != ',') |
| 229 | goto syntax_error; |
| 230 | |
| 231 | switch (buf[0]) |
| 232 | { |
| 233 | /* Comment characters and empty lines. */ |
| 234 | case 0: case '!': case '#': |
| 235 | break; |
| 236 | |
| 237 | /* Include another file. */ |
| 238 | case '@': |
| 239 | handle_input_file (fd, s); |
| 240 | break; |
| 241 | |
| 242 | /* Raw input (to be expected). */ |
| 243 | case 'i': |
| 244 | do |
| 245 | { |
| 246 | n = -1; |
| 247 | sscanf (s, "%02x%n", &data, &n); |
| 248 | s += n; |
| 249 | if (n > 0) |
| 250 | bytes[nbytes++] = data; |
| 251 | } |
| 252 | while (n > 0); |
| 253 | expect_input (fd, bytes, nbytes, nbytes); |
| 254 | if (verbose) |
| 255 | { |
| 256 | printf ("i,"); |
| 257 | for (i = 0; i < nbytes; i++) |
| 258 | printf ("%02x", bytes[i]); |
| 259 | printf ("\n"); |
| 260 | } |
| 261 | break; |
| 262 | |
| 263 | /* Raw output (to be written). */ |
| 264 | case 'o': |
| 265 | do |
| 266 | { |
| 267 | n = -1; |
| 268 | sscanf (s, "%02x%n", &data, &n); |
| 269 | if (n > 0) |
| 270 | { |
| 271 | s += n; |
| 272 | bytes[nbytes++] = data; |
| 273 | } |
| 274 | } |
| 275 | while (n > 0); |
| 276 | if (*s != 0) |
| 277 | goto syntax_error; |
| 278 | send_output (fd, bytes, nbytes); |
| 279 | if (verbose) |
| 280 | { |
| 281 | printf ("o,"); |
| 282 | for (i = 0; i < nbytes; i++) |
| 283 | printf ("%02x", bytes[i]); |
| 284 | printf ("\n"); |
| 285 | } |
| 286 | break; |
| 287 | |
| 288 | /* Read a register. */ |
| 289 | case 'r': |
| 290 | { |
| 291 | unsigned int addr; |
| 292 | sscanf (s, "%x,%x%n", &addr, &data, &n); |
| 293 | if (n < 0 || s[n] != 0) |
| 294 | goto syntax_error; |
| 295 | bytes[0] = 11; |
| 296 | bytes[1] = 0; |
| 297 | bytes[2] = RV_READ_CMD; |
| 298 | h2le32 (bytes + 3, addr); |
| 299 | expect_input (fd, bytes, 11, 7); |
| 300 | h2le32 (bytes + 7, data); |
| 301 | send_output (fd, bytes, 11); |
| 302 | if (verbose) |
| 303 | printf ("r,%x,%x\n", addr, data); |
| 304 | } |
| 305 | break; |
| 306 | |
| 307 | /* Write a register. */ |
| 308 | case 'w': |
| 309 | { |
| 310 | unsigned int addr; |
| 311 | sscanf (s, "%x,%x%n", &addr, &data, &n); |
| 312 | if (n < 0 || s[n] != 0) |
| 313 | goto syntax_error; |
| 314 | bytes[0] = 11; |
| 315 | bytes[1] = 0; |
| 316 | bytes[2] = RV_WRITE_CMD; |
| 317 | h2le32 (bytes + 3, addr); |
| 318 | h2le32 (bytes + 7, data); |
| 319 | expect_input (fd, bytes, 11, 11); |
| 320 | send_output (fd, bytes, 11); |
| 321 | if (verbose) |
| 322 | printf ("w,%x,%x\n", addr, data); |
| 323 | } |
| 324 | break; |
| 325 | |
| 326 | /* Wait for some milliseconds. */ |
| 327 | case 't': |
| 328 | { |
| 329 | int del = 0; |
| 330 | struct timeval to; |
| 331 | sscanf (s, "%d%n", &del, &n); |
| 332 | if (n < 0 || s[n] != 0 || del == 0) |
| 333 | goto syntax_error; |
| 334 | |
| 335 | to.tv_sec = del / 1000; |
| 336 | to.tv_usec = (del % 1000) * 1000; |
| 337 | |
| 338 | if (select (0, NULL, NULL, NULL, &to) != 0) |
| 339 | { |
| 340 | fprintf (stderr, "%s: problem waiting for %d ms:\n %s\n", |
| 341 | progname, del, strerror (errno)); |
| 342 | exit (2); |
| 343 | } |
| 344 | if (verbose) |
| 345 | printf ("t,%d\n", del); |
| 346 | } |
| 347 | break; |
| 348 | |
| 349 | /* Expect a watchdog command. */ |
| 350 | case 'W': |
| 351 | if (*s != 0) |
| 352 | goto syntax_error; |
| 353 | bytes[0] = 3; |
| 354 | bytes[1] = 0; |
| 355 | bytes[2] = RV_WATCHDOG_CMD; |
| 356 | expect_input (fd, bytes, 3, 3); |
| 357 | if (verbose) |
| 358 | printf ("W\n"); |
| 359 | break; |
| 360 | |
| 361 | /* Send an IRQ notification. */ |
| 362 | case 'I': |
| 363 | sscanf (s, "%x%n", &data, &n); |
| 364 | if (n < 0 || s[n] != 0) |
| 365 | goto syntax_error; |
| 366 | bytes[0] = 7; |
| 367 | bytes[1] = 0; |
| 368 | bytes[2] = RV_IRQ_CMD; |
| 369 | h2le32 (bytes + 3, data); |
| 370 | send_output (fd, bytes, 7); |
| 371 | if (verbose) |
| 372 | printf ("I,%x\n", data); |
| 373 | break; |
| 374 | |
| 375 | /* DMA store (to CPU). */ |
| 376 | case 's': |
| 377 | { |
| 378 | unsigned int addr; |
| 379 | sscanf (s, "%x,%n", &addr, &n); |
| 380 | |
| 381 | if (n < 0 || s[n] == 0) |
| 382 | goto syntax_error; |
| 383 | s += n; |
| 384 | do |
| 385 | { |
| 386 | n = -1; |
| 387 | sscanf (s, "%02x%n", &data, &n); |
| 388 | if (n > 0) |
| 389 | { |
| 390 | s += n; |
| 391 | bytes[11 + nbytes++] = data; |
| 392 | } |
| 393 | } |
| 394 | while (n > 0); |
| 395 | |
| 396 | if (*s != 0) |
| 397 | goto syntax_error; |
| 398 | h2le32 (bytes, nbytes + 11); |
| 399 | bytes[2] = RV_MEM_WR_CMD; |
| 400 | h2le32 (bytes + 3, addr); |
| 401 | h2le32 (bytes + 7, nbytes); |
| 402 | send_output (fd, bytes, nbytes + 11); |
| 403 | if (verbose) |
| 404 | { |
| 405 | printf ("s,%x,", addr); |
| 406 | for (i = 0; i < nbytes; i++) |
| 407 | printf ("%02x", bytes[i]); |
| 408 | printf ("\n"); |
| 409 | } |
| 410 | } |
| 411 | break; |
| 412 | |
| 413 | /* DMA load (from CPU). */ |
| 414 | case 'l': |
| 415 | { |
| 416 | unsigned int addr; |
| 417 | sscanf (s, "%x,%n", &addr, &n); |
| 418 | |
| 419 | if (n < 0 || s[n] == 0) |
| 420 | goto syntax_error; |
| 421 | s += n; |
| 422 | do |
| 423 | { |
| 424 | n = -1; |
| 425 | sscanf (s, "%02x%n", &data, &n); |
| 426 | if (n > 0) |
| 427 | { |
| 428 | s += n; |
| 429 | bytes[11 + nbytes++] = data; |
| 430 | } |
| 431 | } |
| 432 | while (n > 0); |
| 433 | |
| 434 | if (*s != 0) |
| 435 | goto syntax_error; |
| 436 | h2le32 (bytes, nbytes + 11); |
| 437 | bytes[0] = 11; |
| 438 | bytes[1] = 0; |
| 439 | bytes[2] = RV_MEM_RD_CMD; |
| 440 | h2le32 (bytes + 3, addr); |
| 441 | h2le32 (bytes + 7, nbytes); |
| 442 | send_output (fd, bytes, 11); |
| 443 | bytes[0] = (nbytes + 11) & 255; |
| 444 | bytes[1] = ((nbytes + 11) >> 8) & 255; |
| 445 | expect_input (fd, bytes, nbytes + 11, nbytes + 11); |
| 446 | if (verbose) |
| 447 | { |
| 448 | printf ("l,%x,", addr); |
| 449 | for (i = 0; i < nbytes; i++) |
| 450 | printf ("%02x", bytes[i]); |
| 451 | printf ("\n"); |
| 452 | } |
| 453 | } |
| 454 | break; |
| 455 | |
| 456 | syntax_error: |
| 457 | default: |
| 458 | fprintf (stderr, "%s: invalid command line in %s:%d:\n %s", |
| 459 | progname, fname, lineno, strerror (errno)); |
| 460 | exit (2); |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | /* Loop over the contents of FNAME, using handle_input to parse each line. |
| 465 | Errors to stderr, exit (2). */ |
| 466 | |
| 467 | static void |
| 468 | handle_input_file (int fd, char *fname) |
| 469 | { |
| 470 | static char buf[2048] = {0}; |
| 471 | int lineno = 0; |
| 472 | FILE *f = fopen (fname, "r"); |
| 473 | |
| 474 | if (f == NULL) |
| 475 | { |
| 476 | fprintf (stderr, "%s: problem opening %s: %s\n", |
| 477 | progname, fname, strerror (errno)); |
| 478 | exit (2); |
| 479 | } |
| 480 | |
| 481 | /* Let's cut the buffer short, so we always get a newline. */ |
| 482 | while (fgets (buf, sizeof (buf) - 1, f) != NULL) |
| 483 | { |
| 484 | buf[strlen (buf) - 1] = 0; |
| 485 | lineno++; |
| 486 | handle_input (fd, buf, fname, lineno); |
| 487 | } |
| 488 | |
| 489 | fclose (f); |
| 490 | } |
| 491 | |
| 492 | int |
| 493 | main (int argc, char *argv[]) |
| 494 | { |
| 495 | int optc; |
| 496 | int fd; |
| 497 | FILE *f; |
| 498 | int i; |
| 499 | |
| 500 | progname = argv[0]; |
| 501 | while ((optc = getopt_long (argc, argv, "", longopts, NULL)) != -1) |
| 502 | switch (optc) |
| 503 | { |
| 504 | case OPT_PORT: |
| 505 | port = atoi (optarg); |
| 506 | break; |
| 507 | |
| 508 | case OPT_TIMEOUT: |
| 509 | timeout = (time_t) atoi (optarg); |
| 510 | break; |
| 511 | |
| 512 | case OPT_VERBOSE: |
| 513 | verbose = 1; |
| 514 | break; |
| 515 | } |
| 516 | |
| 517 | fd = setupsocket (); |
| 518 | if (fd == -1) |
| 519 | { |
| 520 | fprintf (stderr, "%s: problem setting up the connection: %s\n", |
| 521 | progname, strerror (errno)); |
| 522 | exit (2); |
| 523 | } |
| 524 | |
| 525 | for (i = optind; i < argc; i++) |
| 526 | handle_input_file (fd, argv[i]); |
| 527 | |
| 528 | /* FIXME: option-controlled test for remaining input? */ |
| 529 | close (fd); |
| 530 | return 1; |
| 531 | } |
| 532 | #endif |