| 1 | /* Memory-access and commands for remote VxWorks processes, for GDB. |
| 2 | Copyright 1990, 1991, 1992 Free Software Foundation, Inc. |
| 3 | Contributed by Wind River Systems and Cygnus Support. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "frame.h" |
| 23 | #include "inferior.h" |
| 24 | #include "wait.h" |
| 25 | #include "target.h" |
| 26 | #include "gdbcore.h" |
| 27 | #include "command.h" |
| 28 | #include "symtab.h" |
| 29 | #include "complaints.h" |
| 30 | #include "gdbcmd.h" |
| 31 | #include "bfd.h" /* Required by objfiles.h. */ |
| 32 | #include "symfile.h" /* Required by objfiles.h. */ |
| 33 | #include "objfiles.h" |
| 34 | #include "gdb-stabs.h" |
| 35 | |
| 36 | #include "gdb_string.h" |
| 37 | #include <errno.h> |
| 38 | #include <signal.h> |
| 39 | #include <fcntl.h> |
| 40 | #include <sys/types.h> |
| 41 | #include <sys/socket.h> |
| 42 | #define malloc bogon_malloc /* Sun claims "char *malloc()" not void * */ |
| 43 | #define free bogon_free /* Sun claims "int free()" not void */ |
| 44 | #define realloc bogon_realloc /* Sun claims "char *realloc()", not void * */ |
| 45 | #include <rpc/rpc.h> |
| 46 | #undef malloc |
| 47 | #undef free |
| 48 | #undef realloc |
| 49 | #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ |
| 50 | #include <netdb.h> |
| 51 | #include "vx-share/ptrace.h" |
| 52 | #include "vx-share/xdr_ptrace.h" |
| 53 | #include "vx-share/xdr_ld.h" |
| 54 | #include "vx-share/xdr_rdb.h" |
| 55 | #include "vx-share/dbgRpcLib.h" |
| 56 | |
| 57 | #include <symtab.h> |
| 58 | |
| 59 | /* Maximum number of bytes to transfer in a single |
| 60 | PTRACE_{READ,WRITE}DATA request. */ |
| 61 | #define VX_MEMXFER_MAX 4096 |
| 62 | |
| 63 | extern void vx_read_register (); |
| 64 | extern void vx_write_register (); |
| 65 | extern void symbol_file_command (); |
| 66 | extern int stop_soon_quietly; /* for wait_for_inferior */ |
| 67 | |
| 68 | static int net_step (); |
| 69 | static int net_ptrace_clnt_call (); /* Forward decl */ |
| 70 | static enum clnt_stat net_clnt_call (); /* Forward decl */ |
| 71 | extern struct target_ops vx_ops, vx_run_ops; /* Forward declaration */ |
| 72 | |
| 73 | /* Saved name of target host and called function for "info files". |
| 74 | Both malloc'd. */ |
| 75 | |
| 76 | static char *vx_host; |
| 77 | static char *vx_running; /* Called function */ |
| 78 | |
| 79 | /* Nonzero means target that is being debugged remotely has a floating |
| 80 | point processor. */ |
| 81 | |
| 82 | int target_has_fp; |
| 83 | |
| 84 | /* Default error message when the network is forking up. */ |
| 85 | |
| 86 | static const char rpcerr[] = "network target debugging: rpc error"; |
| 87 | |
| 88 | CLIENT *pClient; /* client used in net debugging */ |
| 89 | static int ptraceSock = RPC_ANYSOCK; |
| 90 | |
| 91 | enum clnt_stat net_clnt_call(); |
| 92 | static void parse_args (); |
| 93 | |
| 94 | static struct timeval rpcTimeout = { 10, 0 }; |
| 95 | |
| 96 | static char *skip_white_space (); |
| 97 | static char *find_white_space (); |
| 98 | |
| 99 | /* Tell the VxWorks target system to download a file. |
| 100 | The load addresses of the text, data, and bss segments are |
| 101 | stored in *pTextAddr, *pDataAddr, and *pBssAddr (respectively). |
| 102 | Returns 0 for success, -1 for failure. */ |
| 103 | |
| 104 | static int |
| 105 | net_load (filename, pTextAddr, pDataAddr, pBssAddr) |
| 106 | char *filename; |
| 107 | CORE_ADDR *pTextAddr; |
| 108 | CORE_ADDR *pDataAddr; |
| 109 | CORE_ADDR *pBssAddr; |
| 110 | { |
| 111 | enum clnt_stat status; |
| 112 | struct ldfile ldstruct; |
| 113 | struct timeval load_timeout; |
| 114 | |
| 115 | memset ((char *) &ldstruct, '\0', sizeof (ldstruct)); |
| 116 | |
| 117 | /* We invoke clnt_call () here directly, instead of through |
| 118 | net_clnt_call (), because we need to set a large timeout value. |
| 119 | The load on the target side can take quite a while, easily |
| 120 | more than 10 seconds. The user can kill this call by typing |
| 121 | CTRL-C if there really is a problem with the load. |
| 122 | |
| 123 | Do not change the tv_sec value without checking -- select() imposes |
| 124 | a limit of 10**8 on it for no good reason that I can see... */ |
| 125 | |
| 126 | load_timeout.tv_sec = 99999999; /* A large number, effectively inf. */ |
| 127 | load_timeout.tv_usec = 0; |
| 128 | |
| 129 | status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile, |
| 130 | &ldstruct, load_timeout); |
| 131 | |
| 132 | if (status == RPC_SUCCESS) |
| 133 | { |
| 134 | if (*ldstruct.name == 0) /* load failed on VxWorks side */ |
| 135 | return -1; |
| 136 | *pTextAddr = ldstruct.txt_addr; |
| 137 | *pDataAddr = ldstruct.data_addr; |
| 138 | *pBssAddr = ldstruct.bss_addr; |
| 139 | return 0; |
| 140 | } |
| 141 | else |
| 142 | return -1; |
| 143 | } |
| 144 | |
| 145 | /* returns 0 if successful, errno if RPC failed or VxWorks complains. */ |
| 146 | |
| 147 | static int |
| 148 | net_break (addr, procnum) |
| 149 | int addr; |
| 150 | u_long procnum; |
| 151 | { |
| 152 | enum clnt_stat status; |
| 153 | int break_status; |
| 154 | Rptrace ptrace_in; /* XXX This is stupid. It doesn't need to be a ptrace |
| 155 | structure. How about something smaller? */ |
| 156 | |
| 157 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
| 158 | break_status = 0; |
| 159 | |
| 160 | ptrace_in.addr = addr; |
| 161 | ptrace_in.pid = inferior_pid; |
| 162 | |
| 163 | status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int, |
| 164 | &break_status); |
| 165 | |
| 166 | if (status != RPC_SUCCESS) |
| 167 | return errno; |
| 168 | |
| 169 | if (break_status == -1) |
| 170 | return ENOMEM; |
| 171 | return break_status; /* probably (FIXME) zero */ |
| 172 | } |
| 173 | |
| 174 | /* returns 0 if successful, errno otherwise */ |
| 175 | |
| 176 | static int |
| 177 | vx_insert_breakpoint (addr) |
| 178 | int addr; |
| 179 | { |
| 180 | return net_break (addr, VX_BREAK_ADD); |
| 181 | } |
| 182 | |
| 183 | /* returns 0 if successful, errno otherwise */ |
| 184 | |
| 185 | static int |
| 186 | vx_remove_breakpoint (addr) |
| 187 | int addr; |
| 188 | { |
| 189 | return net_break (addr, VX_BREAK_DELETE); |
| 190 | } |
| 191 | |
| 192 | /* Start an inferior process and sets inferior_pid to its pid. |
| 193 | EXEC_FILE is the file to run. |
| 194 | ALLARGS is a string containing the arguments to the program. |
| 195 | ENV is the environment vector to pass. |
| 196 | Returns process id. Errors reported with error(). |
| 197 | On VxWorks, we ignore exec_file. */ |
| 198 | |
| 199 | static void |
| 200 | vx_create_inferior (exec_file, args, env) |
| 201 | char *exec_file; |
| 202 | char *args; |
| 203 | char **env; |
| 204 | { |
| 205 | enum clnt_stat status; |
| 206 | arg_array passArgs; |
| 207 | TASK_START taskStart; |
| 208 | |
| 209 | memset ((char *) &passArgs, '\0', sizeof (passArgs)); |
| 210 | memset ((char *) &taskStart, '\0', sizeof (taskStart)); |
| 211 | |
| 212 | /* parse arguments, put them in passArgs */ |
| 213 | |
| 214 | parse_args (args, &passArgs); |
| 215 | |
| 216 | if (passArgs.arg_array_len == 0) |
| 217 | error ("You must specify a function name to run, and arguments if any"); |
| 218 | |
| 219 | status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs, |
| 220 | xdr_TASK_START, &taskStart); |
| 221 | |
| 222 | if ((status != RPC_SUCCESS) || (taskStart.status == -1)) |
| 223 | error ("Can't create process on remote target machine"); |
| 224 | |
| 225 | /* Save the name of the running function */ |
| 226 | vx_running = savestring (passArgs.arg_array_val[0], |
| 227 | strlen (passArgs.arg_array_val[0])); |
| 228 | |
| 229 | push_target (&vx_run_ops); |
| 230 | inferior_pid = taskStart.pid; |
| 231 | |
| 232 | /* We will get a trace trap after one instruction. |
| 233 | Insert breakpoints and continue. */ |
| 234 | |
| 235 | init_wait_for_inferior (); |
| 236 | |
| 237 | /* Set up the "saved terminal modes" of the inferior |
| 238 | based on what modes we are starting it with. */ |
| 239 | target_terminal_init (); |
| 240 | |
| 241 | /* Install inferior's terminal modes. */ |
| 242 | target_terminal_inferior (); |
| 243 | |
| 244 | stop_soon_quietly = 1; |
| 245 | wait_for_inferior (); /* Get the task spawn event */ |
| 246 | stop_soon_quietly = 0; |
| 247 | |
| 248 | /* insert_step_breakpoint (); FIXME, do we need this? */ |
| 249 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
| 250 | } |
| 251 | |
| 252 | /* Fill ARGSTRUCT in argc/argv form with the arguments from the |
| 253 | argument string ARGSTRING. */ |
| 254 | |
| 255 | static void |
| 256 | parse_args (arg_string, arg_struct) |
| 257 | register char *arg_string; |
| 258 | arg_array *arg_struct; |
| 259 | { |
| 260 | register int arg_count = 0; /* number of arguments */ |
| 261 | register int arg_index = 0; |
| 262 | register char *p0; |
| 263 | |
| 264 | memset ((char *) arg_struct, '\0', sizeof (arg_array)); |
| 265 | |
| 266 | /* first count how many arguments there are */ |
| 267 | |
| 268 | p0 = arg_string; |
| 269 | while (*p0 != '\0') |
| 270 | { |
| 271 | if (*(p0 = skip_white_space (p0)) == '\0') |
| 272 | break; |
| 273 | p0 = find_white_space (p0); |
| 274 | arg_count++; |
| 275 | } |
| 276 | |
| 277 | arg_struct->arg_array_len = arg_count; |
| 278 | arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1) |
| 279 | * sizeof (char *)); |
| 280 | |
| 281 | /* now copy argument strings into arg_struct. */ |
| 282 | |
| 283 | while (*(arg_string = skip_white_space (arg_string))) |
| 284 | { |
| 285 | p0 = find_white_space (arg_string); |
| 286 | arg_struct->arg_array_val[arg_index++] = savestring (arg_string, |
| 287 | p0 - arg_string); |
| 288 | arg_string = p0; |
| 289 | } |
| 290 | |
| 291 | arg_struct->arg_array_val[arg_count] = NULL; |
| 292 | } |
| 293 | |
| 294 | /* Advance a string pointer across whitespace and return a pointer |
| 295 | to the first non-white character. */ |
| 296 | |
| 297 | static char * |
| 298 | skip_white_space (p) |
| 299 | register char *p; |
| 300 | { |
| 301 | while (*p == ' ' || *p == '\t') |
| 302 | p++; |
| 303 | return p; |
| 304 | } |
| 305 | |
| 306 | /* Search for the first unquoted whitespace character in a string. |
| 307 | Returns a pointer to the character, or to the null terminator |
| 308 | if no whitespace is found. */ |
| 309 | |
| 310 | static char * |
| 311 | find_white_space (p) |
| 312 | register char *p; |
| 313 | { |
| 314 | register int c; |
| 315 | |
| 316 | while ((c = *p) != ' ' && c != '\t' && c) |
| 317 | { |
| 318 | if (c == '\'' || c == '"') |
| 319 | { |
| 320 | while (*++p != c && *p) |
| 321 | { |
| 322 | if (*p == '\\') |
| 323 | p++; |
| 324 | } |
| 325 | if (!*p) |
| 326 | break; |
| 327 | } |
| 328 | p++; |
| 329 | } |
| 330 | return p; |
| 331 | } |
| 332 | |
| 333 | /* Poll the VxWorks target system for an event related |
| 334 | to the debugged task. |
| 335 | Returns -1 if remote wait failed, task status otherwise. */ |
| 336 | |
| 337 | static int |
| 338 | net_wait (pEvent) |
| 339 | RDB_EVENT *pEvent; |
| 340 | { |
| 341 | int pid; |
| 342 | enum clnt_stat status; |
| 343 | |
| 344 | memset ((char *) pEvent, '\0', sizeof (RDB_EVENT)); |
| 345 | |
| 346 | pid = inferior_pid; |
| 347 | status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT, |
| 348 | pEvent); |
| 349 | |
| 350 | /* return (status == RPC_SUCCESS)? pEvent->status: -1; */ |
| 351 | if (status == RPC_SUCCESS) |
| 352 | return ((pEvent->status) ? 1 : 0); |
| 353 | else if (status == RPC_TIMEDOUT) |
| 354 | return (1); |
| 355 | else |
| 356 | return (-1); |
| 357 | } |
| 358 | |
| 359 | /* Suspend the remote task. |
| 360 | Returns -1 if suspend fails on target system, 0 otherwise. */ |
| 361 | |
| 362 | static int |
| 363 | net_quit () |
| 364 | { |
| 365 | int pid; |
| 366 | int quit_status; |
| 367 | enum clnt_stat status; |
| 368 | |
| 369 | quit_status = 0; |
| 370 | |
| 371 | /* don't let rdbTask suspend itself by passing a pid of 0 */ |
| 372 | |
| 373 | if ((pid = inferior_pid) == 0) |
| 374 | return -1; |
| 375 | |
| 376 | status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int, |
| 377 | &quit_status); |
| 378 | |
| 379 | return (status == RPC_SUCCESS)? quit_status: -1; |
| 380 | } |
| 381 | |
| 382 | /* Read a register or registers from the remote system. */ |
| 383 | |
| 384 | void |
| 385 | net_read_registers (reg_buf, len, procnum) |
| 386 | char *reg_buf; |
| 387 | int len; |
| 388 | u_long procnum; |
| 389 | { |
| 390 | int status; |
| 391 | Rptrace ptrace_in; |
| 392 | Ptrace_return ptrace_out; |
| 393 | C_bytes out_data; |
| 394 | char message[100]; |
| 395 | |
| 396 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
| 397 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); |
| 398 | |
| 399 | /* Initialize RPC input argument structure. */ |
| 400 | |
| 401 | ptrace_in.pid = inferior_pid; |
| 402 | ptrace_in.info.ttype = NOINFO; |
| 403 | |
| 404 | /* Initialize RPC return value structure. */ |
| 405 | |
| 406 | out_data.bytes = reg_buf; |
| 407 | out_data.len = len; |
| 408 | ptrace_out.info.more_data = (caddr_t) &out_data; |
| 409 | |
| 410 | /* Call RPC; take an error exit if appropriate. */ |
| 411 | |
| 412 | status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out); |
| 413 | if (status) |
| 414 | error (rpcerr); |
| 415 | if (ptrace_out.status == -1) |
| 416 | { |
| 417 | errno = ptrace_out.errno; |
| 418 | sprintf (message, "reading %s registers", (procnum == PTRACE_GETREGS) |
| 419 | ? "general-purpose" |
| 420 | : "floating-point"); |
| 421 | perror_with_name (message); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | /* Write register values to a VxWorks target. REG_BUF points to a buffer |
| 426 | containing the raw register values, LEN is the length of REG_BUF in |
| 427 | bytes, and PROCNUM is the RPC procedure number (PTRACE_SETREGS or |
| 428 | PTRACE_SETFPREGS). An error exit is taken if the RPC call fails or |
| 429 | if an error status is returned by the remote debug server. This is |
| 430 | a utility routine used by vx_write_register (). */ |
| 431 | |
| 432 | void |
| 433 | net_write_registers (reg_buf, len, procnum) |
| 434 | char *reg_buf; |
| 435 | int len; |
| 436 | u_long procnum; |
| 437 | { |
| 438 | int status; |
| 439 | Rptrace ptrace_in; |
| 440 | Ptrace_return ptrace_out; |
| 441 | C_bytes in_data; |
| 442 | char message[100]; |
| 443 | |
| 444 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
| 445 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); |
| 446 | |
| 447 | /* Initialize RPC input argument structure. */ |
| 448 | |
| 449 | in_data.bytes = reg_buf; |
| 450 | in_data.len = len; |
| 451 | |
| 452 | ptrace_in.pid = inferior_pid; |
| 453 | ptrace_in.info.ttype = DATA; |
| 454 | ptrace_in.info.more_data = (caddr_t) &in_data; |
| 455 | |
| 456 | /* Call RPC; take an error exit if appropriate. */ |
| 457 | |
| 458 | status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out); |
| 459 | if (status) |
| 460 | error (rpcerr); |
| 461 | if (ptrace_out.status == -1) |
| 462 | { |
| 463 | errno = ptrace_out.errno; |
| 464 | sprintf (message, "writing %s registers", (procnum == PTRACE_SETREGS) |
| 465 | ? "general-purpose" |
| 466 | : "floating-point"); |
| 467 | perror_with_name (message); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | /* Prepare to store registers. Since we will store all of them, |
| 472 | read out their current values now. */ |
| 473 | |
| 474 | static void |
| 475 | vx_prepare_to_store () |
| 476 | { |
| 477 | /* Fetch all registers, if any of them are not yet fetched. */ |
| 478 | read_register_bytes (0, NULL, REGISTER_BYTES); |
| 479 | } |
| 480 | |
| 481 | /* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR |
| 482 | to debugger memory starting at MYADDR. WRITE is true if writing to the |
| 483 | inferior. |
| 484 | Result is the number of bytes written or read (zero if error). The |
| 485 | protocol allows us to return a negative count, indicating that we can't |
| 486 | handle the current address but can handle one N bytes further, but |
| 487 | vxworks doesn't give us that information. */ |
| 488 | |
| 489 | static int |
| 490 | vx_xfer_memory (memaddr, myaddr, len, write, target) |
| 491 | CORE_ADDR memaddr; |
| 492 | char *myaddr; |
| 493 | int len; |
| 494 | int write; |
| 495 | struct target_ops *target; /* ignored */ |
| 496 | { |
| 497 | int status; |
| 498 | Rptrace ptrace_in; |
| 499 | Ptrace_return ptrace_out; |
| 500 | C_bytes data; |
| 501 | enum ptracereq request; |
| 502 | int nleft, nxfer; |
| 503 | |
| 504 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
| 505 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); |
| 506 | |
| 507 | ptrace_in.pid = inferior_pid; /* XXX pid unnecessary for READDATA */ |
| 508 | ptrace_in.addr = (int) memaddr; /* Where from */ |
| 509 | ptrace_in.data = len; /* How many bytes */ |
| 510 | |
| 511 | if (write) |
| 512 | { |
| 513 | ptrace_in.info.ttype = DATA; |
| 514 | ptrace_in.info.more_data = (caddr_t) &data; |
| 515 | |
| 516 | data.bytes = (caddr_t) myaddr; /* Where from */ |
| 517 | data.len = len; /* How many bytes (again, for XDR) */ |
| 518 | request = PTRACE_WRITEDATA; |
| 519 | } |
| 520 | else |
| 521 | { |
| 522 | ptrace_out.info.more_data = (caddr_t) &data; |
| 523 | request = PTRACE_READDATA; |
| 524 | } |
| 525 | /* Loop until the entire request has been satisfied, transferring |
| 526 | at most VX_MEMXFER_MAX bytes per iteration. Break from the loop |
| 527 | if an error status is returned by the remote debug server. */ |
| 528 | |
| 529 | nleft = len; |
| 530 | status = 0; |
| 531 | |
| 532 | while (nleft > 0 && status == 0) |
| 533 | { |
| 534 | nxfer = min (nleft, VX_MEMXFER_MAX); |
| 535 | |
| 536 | ptrace_in.addr = (int) memaddr; |
| 537 | ptrace_in.data = nxfer; |
| 538 | data.bytes = (caddr_t) myaddr; |
| 539 | data.len = nxfer; |
| 540 | |
| 541 | /* Request a block from the remote debug server; if RPC fails, |
| 542 | report an error and return to debugger command level. */ |
| 543 | |
| 544 | if (net_ptrace_clnt_call (request, &ptrace_in, &ptrace_out)) |
| 545 | error (rpcerr); |
| 546 | |
| 547 | status = ptrace_out.status; |
| 548 | if (status == 0) |
| 549 | { |
| 550 | memaddr += nxfer; |
| 551 | myaddr += nxfer; |
| 552 | nleft -= nxfer; |
| 553 | } |
| 554 | else |
| 555 | { |
| 556 | /* A target-side error has ocurred. Set errno to the error |
| 557 | code chosen by the target so that a later perror () will |
| 558 | say something meaningful. */ |
| 559 | |
| 560 | errno = ptrace_out.errno; |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | /* Return the number of bytes transferred. */ |
| 565 | |
| 566 | return (len - nleft); |
| 567 | } |
| 568 | |
| 569 | static void |
| 570 | vx_files_info () |
| 571 | { |
| 572 | printf_unfiltered ("\tAttached to host `%s'", vx_host); |
| 573 | printf_unfiltered (", which has %sfloating point", target_has_fp? "": "no "); |
| 574 | printf_unfiltered (".\n"); |
| 575 | } |
| 576 | |
| 577 | static void |
| 578 | vx_run_files_info () |
| 579 | { |
| 580 | printf_unfiltered ("\tRunning %s VxWorks process %s", |
| 581 | vx_running ? "child" : "attached", |
| 582 | local_hex_string (inferior_pid)); |
| 583 | if (vx_running) |
| 584 | printf_unfiltered (", function `%s'", vx_running); |
| 585 | printf_unfiltered(".\n"); |
| 586 | } |
| 587 | |
| 588 | static void |
| 589 | vx_resume (pid, step, siggnal) |
| 590 | int pid; |
| 591 | int step; |
| 592 | enum target_signal siggnal; |
| 593 | { |
| 594 | int status; |
| 595 | Rptrace ptrace_in; |
| 596 | Ptrace_return ptrace_out; |
| 597 | CORE_ADDR cont_addr; |
| 598 | |
| 599 | if (pid == -1) |
| 600 | pid = inferior_pid; |
| 601 | |
| 602 | if (siggnal != 0 && siggnal != stop_signal) |
| 603 | error ("Cannot send signals to VxWorks processes"); |
| 604 | |
| 605 | /* Set CONT_ADDR to the address at which we are continuing, |
| 606 | or to 1 if we are continuing from where the program stopped. |
| 607 | This conforms to traditional ptrace () usage, but at the same |
| 608 | time has special meaning for the VxWorks remote debug server. |
| 609 | If the address is not 1, the server knows that the target |
| 610 | program is jumping to a new address, which requires special |
| 611 | handling if there is a breakpoint at the new address. */ |
| 612 | |
| 613 | cont_addr = read_register (PC_REGNUM); |
| 614 | if (cont_addr == stop_pc) |
| 615 | cont_addr = 1; |
| 616 | |
| 617 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
| 618 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); |
| 619 | |
| 620 | ptrace_in.pid = pid; |
| 621 | ptrace_in.addr = cont_addr; /* Target side insists on this, or it panics. */ |
| 622 | |
| 623 | if (step) |
| 624 | status = net_step(); |
| 625 | else |
| 626 | status = net_ptrace_clnt_call (PTRACE_CONT, &ptrace_in, &ptrace_out); |
| 627 | |
| 628 | if (status) |
| 629 | error (rpcerr); |
| 630 | if (ptrace_out.status == -1) |
| 631 | { |
| 632 | errno = ptrace_out.errno; |
| 633 | perror_with_name ("Resuming remote process"); |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | static void |
| 638 | vx_mourn_inferior () |
| 639 | { |
| 640 | pop_target (); /* Pop back to no-child state */ |
| 641 | generic_mourn_inferior (); |
| 642 | } |
| 643 | |
| 644 | \f |
| 645 | static void vx_add_symbols PARAMS ((char *, int, CORE_ADDR, CORE_ADDR, |
| 646 | CORE_ADDR)); |
| 647 | |
| 648 | struct find_sect_args { |
| 649 | CORE_ADDR text_start; |
| 650 | CORE_ADDR data_start; |
| 651 | CORE_ADDR bss_start; |
| 652 | }; |
| 653 | |
| 654 | static void find_sect PARAMS ((bfd *, asection *, void *)); |
| 655 | |
| 656 | static void |
| 657 | find_sect (abfd, sect, obj) |
| 658 | bfd *abfd; |
| 659 | asection *sect; |
| 660 | PTR obj; |
| 661 | { |
| 662 | struct find_sect_args *args = (struct find_sect_args *)obj; |
| 663 | |
| 664 | if (bfd_get_section_flags (abfd, sect) & (SEC_CODE & SEC_READONLY)) |
| 665 | args->text_start = bfd_get_section_vma (abfd, sect); |
| 666 | else if (bfd_get_section_flags (abfd, sect) & SEC_ALLOC) |
| 667 | { |
| 668 | if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
| 669 | { |
| 670 | /* Exclude .ctor and .dtor sections which have SEC_CODE set but not |
| 671 | SEC_DATA. */ |
| 672 | if (bfd_get_section_flags (abfd, sect) & SEC_DATA) |
| 673 | args->data_start = bfd_get_section_vma (abfd, sect); |
| 674 | } |
| 675 | else |
| 676 | args->bss_start = bfd_get_section_vma (abfd, sect); |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | static void |
| 681 | vx_add_symbols (name, from_tty, text_addr, data_addr, bss_addr) |
| 682 | char *name; |
| 683 | int from_tty; |
| 684 | CORE_ADDR text_addr; |
| 685 | CORE_ADDR data_addr; |
| 686 | CORE_ADDR bss_addr; |
| 687 | { |
| 688 | struct section_offsets *offs; |
| 689 | struct objfile *objfile; |
| 690 | struct find_sect_args ss; |
| 691 | |
| 692 | /* It might be nice to suppress the breakpoint_re_set which happens here |
| 693 | because we are going to do one again after the objfile_relocate. */ |
| 694 | objfile = symbol_file_add (name, from_tty, 0, 0, 0, 0); |
| 695 | |
| 696 | /* This is a (slightly cheesy) way of superceding the old symbols. A less |
| 697 | cheesy way would be to find the objfile with the same name and |
| 698 | free_objfile it. */ |
| 699 | objfile_to_front (objfile); |
| 700 | |
| 701 | offs = (struct section_offsets *) |
| 702 | alloca (sizeof (struct section_offsets) |
| 703 | + objfile->num_sections * sizeof (offs->offsets)); |
| 704 | memcpy (offs, objfile->section_offsets, |
| 705 | sizeof (struct section_offsets) |
| 706 | + objfile->num_sections * sizeof (offs->offsets)); |
| 707 | |
| 708 | ss.text_start = 0; |
| 709 | ss.data_start = 0; |
| 710 | ss.bss_start = 0; |
| 711 | bfd_map_over_sections (objfile->obfd, find_sect, &ss); |
| 712 | |
| 713 | /* Both COFF and b.out frontends use these SECT_OFF_* values. */ |
| 714 | ANOFFSET (offs, SECT_OFF_TEXT) = text_addr - ss.text_start; |
| 715 | ANOFFSET (offs, SECT_OFF_DATA) = data_addr - ss.data_start; |
| 716 | ANOFFSET (offs, SECT_OFF_BSS) = bss_addr - ss.bss_start; |
| 717 | objfile_relocate (objfile, offs); |
| 718 | } |
| 719 | |
| 720 | /* This function allows the addition of incrementally linked object files. */ |
| 721 | |
| 722 | static void |
| 723 | vx_load_command (arg_string, from_tty) |
| 724 | char *arg_string; |
| 725 | int from_tty; |
| 726 | { |
| 727 | CORE_ADDR text_addr; |
| 728 | CORE_ADDR data_addr; |
| 729 | CORE_ADDR bss_addr; |
| 730 | |
| 731 | if (arg_string == 0) |
| 732 | error ("The load command takes a file name"); |
| 733 | |
| 734 | arg_string = tilde_expand (arg_string); |
| 735 | make_cleanup (free, arg_string); |
| 736 | |
| 737 | dont_repeat (); |
| 738 | |
| 739 | /* Refuse to load the module if a debugged task is running. Doing so |
| 740 | can have a number of unpleasant consequences to the running task. */ |
| 741 | |
| 742 | if (inferior_pid != 0 && target_has_execution) |
| 743 | { |
| 744 | if (query ("You may not load a module while the target task is running.\n\ |
| 745 | Kill the target task? ")) |
| 746 | target_kill (); |
| 747 | else |
| 748 | error ("Load cancelled."); |
| 749 | } |
| 750 | |
| 751 | QUIT; |
| 752 | immediate_quit++; |
| 753 | if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1) |
| 754 | error ("Load failed on target machine"); |
| 755 | immediate_quit--; |
| 756 | |
| 757 | vx_add_symbols (arg_string, from_tty, text_addr, data_addr, bss_addr); |
| 758 | |
| 759 | /* Getting new symbols may change our opinion about what is |
| 760 | frameless. */ |
| 761 | reinit_frame_cache (); |
| 762 | } |
| 763 | |
| 764 | /* Single step the target program at the source or machine level. |
| 765 | Takes an error exit if rpc fails. |
| 766 | Returns -1 if remote single-step operation fails, else 0. */ |
| 767 | |
| 768 | static int |
| 769 | net_step () |
| 770 | { |
| 771 | enum clnt_stat status; |
| 772 | int step_status; |
| 773 | SOURCE_STEP source_step; |
| 774 | |
| 775 | source_step.taskId = inferior_pid; |
| 776 | |
| 777 | if (step_range_end) |
| 778 | { |
| 779 | source_step.startAddr = step_range_start; |
| 780 | source_step.endAddr = step_range_end; |
| 781 | } |
| 782 | else |
| 783 | { |
| 784 | source_step.startAddr = 0; |
| 785 | source_step.endAddr = 0; |
| 786 | } |
| 787 | |
| 788 | status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step, |
| 789 | xdr_int, &step_status); |
| 790 | |
| 791 | if (status == RPC_SUCCESS) |
| 792 | return step_status; |
| 793 | else |
| 794 | error (rpcerr); |
| 795 | } |
| 796 | |
| 797 | /* Emulate ptrace using RPC calls to the VxWorks target system. |
| 798 | Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */ |
| 799 | |
| 800 | static int |
| 801 | net_ptrace_clnt_call (request, pPtraceIn, pPtraceOut) |
| 802 | enum ptracereq request; |
| 803 | Rptrace *pPtraceIn; |
| 804 | Ptrace_return *pPtraceOut; |
| 805 | { |
| 806 | enum clnt_stat status; |
| 807 | |
| 808 | status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return, |
| 809 | pPtraceOut); |
| 810 | |
| 811 | if (status != RPC_SUCCESS) |
| 812 | return -1; |
| 813 | |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | /* Query the target for the name of the file from which VxWorks was |
| 818 | booted. pBootFile is the address of a pointer to the buffer to |
| 819 | receive the file name; if the pointer pointed to by pBootFile is |
| 820 | NULL, memory for the buffer will be allocated by XDR. |
| 821 | Returns -1 if rpc failed, 0 otherwise. */ |
| 822 | |
| 823 | static int |
| 824 | net_get_boot_file (pBootFile) |
| 825 | char **pBootFile; |
| 826 | { |
| 827 | enum clnt_stat status; |
| 828 | |
| 829 | status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0, |
| 830 | xdr_wrapstring, pBootFile); |
| 831 | return (status == RPC_SUCCESS) ? 0 : -1; |
| 832 | } |
| 833 | |
| 834 | /* Fetch a list of loaded object modules from the VxWorks target. |
| 835 | Returns -1 if rpc failed, 0 otherwise |
| 836 | There's no way to check if the returned loadTable is correct. |
| 837 | VxWorks doesn't check it. */ |
| 838 | |
| 839 | static int |
| 840 | net_get_symbols (pLoadTable) |
| 841 | ldtabl *pLoadTable; /* return pointer to ldtabl here */ |
| 842 | { |
| 843 | enum clnt_stat status; |
| 844 | |
| 845 | memset ((char *) pLoadTable, '\0', sizeof (struct ldtabl)); |
| 846 | |
| 847 | status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable); |
| 848 | return (status == RPC_SUCCESS) ? 0 : -1; |
| 849 | } |
| 850 | |
| 851 | /* Look up a symbol in the VxWorks target's symbol table. |
| 852 | Returns status of symbol read on target side (0=success, -1=fail) |
| 853 | Returns -1 and complain()s if rpc fails. */ |
| 854 | |
| 855 | struct complaint cant_contact_target = |
| 856 | {"Lost contact with VxWorks target", 0, 0}; |
| 857 | |
| 858 | static int |
| 859 | vx_lookup_symbol (name, pAddr) |
| 860 | char *name; /* symbol name */ |
| 861 | CORE_ADDR *pAddr; |
| 862 | { |
| 863 | enum clnt_stat status; |
| 864 | SYMBOL_ADDR symbolAddr; |
| 865 | |
| 866 | *pAddr = 0; |
| 867 | memset ((char *) &symbolAddr, '\0', sizeof (symbolAddr)); |
| 868 | |
| 869 | status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name, |
| 870 | xdr_SYMBOL_ADDR, &symbolAddr); |
| 871 | if (status != RPC_SUCCESS) |
| 872 | { |
| 873 | complain (&cant_contact_target); |
| 874 | return -1; |
| 875 | } |
| 876 | |
| 877 | *pAddr = symbolAddr.addr; |
| 878 | return symbolAddr.status; |
| 879 | } |
| 880 | |
| 881 | /* Check to see if the VxWorks target has a floating point coprocessor. |
| 882 | Returns 1 if target has floating point processor, 0 otherwise. |
| 883 | Calls error() if rpc fails. */ |
| 884 | |
| 885 | static int |
| 886 | net_check_for_fp () |
| 887 | { |
| 888 | enum clnt_stat status; |
| 889 | bool_t fp = 0; /* true if fp processor is present on target board */ |
| 890 | |
| 891 | status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp); |
| 892 | if (status != RPC_SUCCESS) |
| 893 | error (rpcerr); |
| 894 | |
| 895 | return (int) fp; |
| 896 | } |
| 897 | |
| 898 | /* Establish an RPC connection with the VxWorks target system. |
| 899 | Calls error () if unable to establish connection. */ |
| 900 | |
| 901 | static void |
| 902 | net_connect (host) |
| 903 | char *host; |
| 904 | { |
| 905 | struct sockaddr_in destAddr; |
| 906 | struct hostent *destHost; |
| 907 | unsigned long addr; |
| 908 | |
| 909 | /* Get the internet address for the given host. Allow a numeric |
| 910 | IP address or a hostname. */ |
| 911 | |
| 912 | addr = inet_addr (host); |
| 913 | if (addr == -1) |
| 914 | { |
| 915 | destHost = (struct hostent *) gethostbyname (host); |
| 916 | if (destHost == NULL) |
| 917 | /* FIXME: Probably should include hostname here in quotes. |
| 918 | For example if the user types "target vxworks vx960 " it should |
| 919 | say "Invalid host `vx960 '." not just "Invalid hostname". */ |
| 920 | error ("Invalid hostname. Couldn't find remote host address."); |
| 921 | addr = * (unsigned long *) destHost->h_addr; |
| 922 | } |
| 923 | |
| 924 | memset (&destAddr, '\0', sizeof (destAddr)); |
| 925 | |
| 926 | destAddr.sin_addr.s_addr = addr; |
| 927 | destAddr.sin_family = AF_INET; |
| 928 | destAddr.sin_port = 0; /* set to actual port that remote |
| 929 | ptrace is listening on. */ |
| 930 | |
| 931 | /* Create a tcp client transport on which to issue |
| 932 | calls to the remote ptrace server. */ |
| 933 | |
| 934 | ptraceSock = RPC_ANYSOCK; |
| 935 | pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0); |
| 936 | /* FIXME, here is where we deal with different version numbers of the |
| 937 | proto */ |
| 938 | |
| 939 | if (pClient == NULL) |
| 940 | { |
| 941 | clnt_pcreateerror ("\tnet_connect"); |
| 942 | error ("Couldn't connect to remote target."); |
| 943 | } |
| 944 | } |
| 945 | \f |
| 946 | /* Sleep for the specified number of milliseconds |
| 947 | * (assumed to be less than 1000). |
| 948 | * If select () is interrupted, returns immediately; |
| 949 | * takes an error exit if select () fails for some other reason. |
| 950 | */ |
| 951 | |
| 952 | static void |
| 953 | sleep_ms (ms) |
| 954 | long ms; |
| 955 | { |
| 956 | struct timeval select_timeout; |
| 957 | int status; |
| 958 | |
| 959 | select_timeout.tv_sec = 0; |
| 960 | select_timeout.tv_usec = ms * 1000; |
| 961 | |
| 962 | status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, |
| 963 | &select_timeout); |
| 964 | |
| 965 | if (status < 0 && errno != EINTR) |
| 966 | perror_with_name ("select"); |
| 967 | } |
| 968 | |
| 969 | static int |
| 970 | vx_wait (pid_to_wait_for, status) |
| 971 | int pid_to_wait_for; |
| 972 | struct target_waitstatus *status; |
| 973 | { |
| 974 | register int pid; |
| 975 | RDB_EVENT rdbEvent; |
| 976 | int quit_failed; |
| 977 | |
| 978 | do |
| 979 | { |
| 980 | /* If CTRL-C is hit during this loop, |
| 981 | suspend the inferior process. */ |
| 982 | |
| 983 | quit_failed = 0; |
| 984 | if (quit_flag) |
| 985 | { |
| 986 | quit_failed = (net_quit () == -1); |
| 987 | quit_flag = 0; |
| 988 | } |
| 989 | |
| 990 | /* If a net_quit () or net_wait () call has failed, |
| 991 | allow the user to break the connection with the target. |
| 992 | We can't simply error () out of this loop, since the |
| 993 | data structures representing the state of the inferior |
| 994 | are in an inconsistent state. */ |
| 995 | |
| 996 | if (quit_failed || net_wait (&rdbEvent) == -1) |
| 997 | { |
| 998 | terminal_ours (); |
| 999 | if (query ("Can't %s. Disconnect from target system? ", |
| 1000 | (quit_failed) ? "suspend remote task" |
| 1001 | : "get status of remote task")) |
| 1002 | { |
| 1003 | target_mourn_inferior(); |
| 1004 | error ("Use the \"target\" command to reconnect."); |
| 1005 | } |
| 1006 | else |
| 1007 | { |
| 1008 | terminal_inferior (); |
| 1009 | continue; |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | pid = rdbEvent.taskId; |
| 1014 | if (pid == 0) |
| 1015 | { |
| 1016 | sleep_ms (200); /* FIXME Don't kill the network too badly */ |
| 1017 | } |
| 1018 | else if (pid != inferior_pid) |
| 1019 | fatal ("Bad pid for debugged task: %s\n", |
| 1020 | local_hex_string((unsigned long) pid)); |
| 1021 | } while (pid == 0); |
| 1022 | |
| 1023 | /* The mostly likely kind. */ |
| 1024 | status->kind = TARGET_WAITKIND_STOPPED; |
| 1025 | |
| 1026 | switch (rdbEvent.eventType) |
| 1027 | { |
| 1028 | case EVENT_EXIT: |
| 1029 | status->kind = TARGET_WAITKIND_EXITED; |
| 1030 | /* FIXME is it possible to distinguish between a |
| 1031 | normal vs abnormal exit in VxWorks? */ |
| 1032 | status->value.integer = 0; |
| 1033 | break; |
| 1034 | |
| 1035 | case EVENT_START: |
| 1036 | /* Task was just started. */ |
| 1037 | status->value.sig = TARGET_SIGNAL_TRAP; |
| 1038 | break; |
| 1039 | |
| 1040 | case EVENT_STOP: |
| 1041 | status->value.sig = TARGET_SIGNAL_TRAP; |
| 1042 | /* XXX was it stopped by a signal? act accordingly */ |
| 1043 | break; |
| 1044 | |
| 1045 | case EVENT_BREAK: /* Breakpoint was hit. */ |
| 1046 | status->value.sig = TARGET_SIGNAL_TRAP; |
| 1047 | break; |
| 1048 | |
| 1049 | case EVENT_SUSPEND: /* Task was suspended, probably by ^C. */ |
| 1050 | status->value.sig = TARGET_SIGNAL_INT; |
| 1051 | break; |
| 1052 | |
| 1053 | case EVENT_BUS_ERR: /* Task made evil nasty reference. */ |
| 1054 | status->value.sig = TARGET_SIGNAL_BUS; |
| 1055 | break; |
| 1056 | |
| 1057 | case EVENT_ZERO_DIV: /* Division by zero */ |
| 1058 | status->value.sig = TARGET_SIGNAL_FPE; |
| 1059 | break; |
| 1060 | |
| 1061 | case EVENT_SIGNAL: |
| 1062 | #ifdef I80960 |
| 1063 | status->value.sig = i960_fault_to_signal (rdbEvent.sigType); |
| 1064 | #else |
| 1065 | /* Back in the old days, before enum target_signal, this code used |
| 1066 | to add NSIG to the signal number and claim that PRINT_RANDOM_SIGNAL |
| 1067 | would take care of it. But PRINT_RANDOM_SIGNAL has never been |
| 1068 | defined except on the i960, so I don't really know what we are |
| 1069 | supposed to do on other architectures. */ |
| 1070 | status->value.sig = TARGET_SIGNAL_UNKNOWN; |
| 1071 | #endif |
| 1072 | break; |
| 1073 | } /* switch */ |
| 1074 | return pid; |
| 1075 | } |
| 1076 | \f |
| 1077 | static int |
| 1078 | symbol_stub (arg) |
| 1079 | char *arg; |
| 1080 | { |
| 1081 | symbol_file_command (arg, 0); |
| 1082 | return 1; |
| 1083 | } |
| 1084 | |
| 1085 | static int |
| 1086 | add_symbol_stub (arg) |
| 1087 | char *arg; |
| 1088 | { |
| 1089 | struct ldfile *pLoadFile = (struct ldfile *)arg; |
| 1090 | |
| 1091 | printf_unfiltered("\t%s: ", pLoadFile->name); |
| 1092 | vx_add_symbols (pLoadFile->name, 0, pLoadFile->txt_addr, |
| 1093 | pLoadFile->data_addr, pLoadFile->bss_addr); |
| 1094 | printf_unfiltered ("ok\n"); |
| 1095 | return 1; |
| 1096 | } |
| 1097 | /* Target command for VxWorks target systems. |
| 1098 | |
| 1099 | Used in vxgdb. Takes the name of a remote target machine |
| 1100 | running vxWorks and connects to it to initialize remote network |
| 1101 | debugging. */ |
| 1102 | |
| 1103 | static void |
| 1104 | vx_open (args, from_tty) |
| 1105 | char *args; |
| 1106 | int from_tty; |
| 1107 | { |
| 1108 | extern int close (); |
| 1109 | char *bootFile; |
| 1110 | extern char *source_path; |
| 1111 | struct ldtabl loadTable; |
| 1112 | struct ldfile *pLoadFile; |
| 1113 | int i; |
| 1114 | extern CLIENT *pClient; |
| 1115 | int symbols_added = 0; |
| 1116 | |
| 1117 | if (!args) |
| 1118 | error_no_arg ("target machine name"); |
| 1119 | |
| 1120 | target_preopen (from_tty); |
| 1121 | |
| 1122 | unpush_target (&vx_ops); |
| 1123 | printf_unfiltered ("Attaching remote machine across net...\n"); |
| 1124 | gdb_flush (gdb_stdout); |
| 1125 | |
| 1126 | /* Allow the user to kill the connect attempt by typing ^C. |
| 1127 | Wait until the call to target_has_fp () completes before |
| 1128 | disallowing an immediate quit, since even if net_connect () |
| 1129 | is successful, the remote debug server might be hung. */ |
| 1130 | |
| 1131 | immediate_quit++; |
| 1132 | |
| 1133 | net_connect (args); |
| 1134 | target_has_fp = net_check_for_fp (); |
| 1135 | printf_filtered ("Connected to %s.\n", args); |
| 1136 | |
| 1137 | immediate_quit--; |
| 1138 | |
| 1139 | push_target (&vx_ops); |
| 1140 | |
| 1141 | /* Save a copy of the target host's name. */ |
| 1142 | vx_host = savestring (args, strlen (args)); |
| 1143 | |
| 1144 | /* Find out the name of the file from which the target was booted |
| 1145 | and load its symbol table. */ |
| 1146 | |
| 1147 | printf_filtered ("Looking in Unix path for all loaded modules:\n"); |
| 1148 | bootFile = NULL; |
| 1149 | if (!net_get_boot_file (&bootFile)) |
| 1150 | { |
| 1151 | if (*bootFile) |
| 1152 | { |
| 1153 | printf_filtered ("\t%s: ", bootFile); |
| 1154 | /* This assumes that the kernel is never relocated. Hope that is an |
| 1155 | accurate assumption. */ |
| 1156 | if (catch_errors |
| 1157 | (symbol_stub, |
| 1158 | bootFile, |
| 1159 | "Error while reading symbols from boot file:\n", |
| 1160 | RETURN_MASK_ALL)) |
| 1161 | puts_filtered ("ok\n"); |
| 1162 | } |
| 1163 | else if (from_tty) |
| 1164 | printf_unfiltered ("VxWorks kernel symbols not loaded.\n"); |
| 1165 | } |
| 1166 | else |
| 1167 | error ("Can't retrieve boot file name from target machine."); |
| 1168 | |
| 1169 | clnt_freeres (pClient, xdr_wrapstring, &bootFile); |
| 1170 | |
| 1171 | if (net_get_symbols (&loadTable) != 0) |
| 1172 | error ("Can't read loaded modules from target machine"); |
| 1173 | |
| 1174 | i = 0-1; |
| 1175 | while (++i < loadTable.tbl_size) |
| 1176 | { |
| 1177 | QUIT; /* FIXME, avoids clnt_freeres below: mem leak */ |
| 1178 | pLoadFile = &loadTable.tbl_ent [i]; |
| 1179 | #ifdef WRS_ORIG |
| 1180 | { |
| 1181 | register int desc; |
| 1182 | struct cleanup *old_chain; |
| 1183 | char *fullname = NULL; |
| 1184 | |
| 1185 | desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname); |
| 1186 | if (desc < 0) |
| 1187 | perror_with_name (pLoadFile->name); |
| 1188 | old_chain = make_cleanup (close, desc); |
| 1189 | add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr, |
| 1190 | pLoadFile->bss_addr); |
| 1191 | do_cleanups (old_chain); |
| 1192 | } |
| 1193 | #else |
| 1194 | /* FIXME: Is there something better to search than the PATH? (probably |
| 1195 | not the source path, since source might be in different directories |
| 1196 | than objects. */ |
| 1197 | |
| 1198 | if (catch_errors (add_symbol_stub, (char *)pLoadFile, (char *)0, |
| 1199 | RETURN_MASK_ALL)) |
| 1200 | symbols_added = 1; |
| 1201 | #endif |
| 1202 | } |
| 1203 | printf_filtered ("Done.\n"); |
| 1204 | |
| 1205 | clnt_freeres (pClient, xdr_ldtabl, &loadTable); |
| 1206 | |
| 1207 | /* Getting new symbols may change our opinion about what is |
| 1208 | frameless. */ |
| 1209 | if (symbols_added) |
| 1210 | reinit_frame_cache (); |
| 1211 | } |
| 1212 | \f |
| 1213 | /* Takes a task started up outside of gdb and ``attaches'' to it. |
| 1214 | This stops it cold in its tracks and allows us to start tracing it. */ |
| 1215 | |
| 1216 | static void |
| 1217 | vx_attach (args, from_tty) |
| 1218 | char *args; |
| 1219 | int from_tty; |
| 1220 | { |
| 1221 | unsigned long pid; |
| 1222 | char *cptr = 0; |
| 1223 | Rptrace ptrace_in; |
| 1224 | Ptrace_return ptrace_out; |
| 1225 | int status; |
| 1226 | |
| 1227 | if (!args) |
| 1228 | error_no_arg ("process-id to attach"); |
| 1229 | |
| 1230 | pid = strtoul (args, &cptr, 0); |
| 1231 | if ((cptr == args) || (*cptr != '\0')) |
| 1232 | error ("Invalid process-id -- give a single number in decimal or 0xhex"); |
| 1233 | |
| 1234 | if (from_tty) |
| 1235 | printf_unfiltered ("Attaching pid %s.\n", |
| 1236 | local_hex_string((unsigned long) pid)); |
| 1237 | |
| 1238 | memset ((char *)&ptrace_in, '\0', sizeof (ptrace_in)); |
| 1239 | memset ((char *)&ptrace_out, '\0', sizeof (ptrace_out)); |
| 1240 | ptrace_in.pid = pid; |
| 1241 | |
| 1242 | status = net_ptrace_clnt_call (PTRACE_ATTACH, &ptrace_in, &ptrace_out); |
| 1243 | if (status == -1) |
| 1244 | error (rpcerr); |
| 1245 | if (ptrace_out.status == -1) |
| 1246 | { |
| 1247 | errno = ptrace_out.errno; |
| 1248 | perror_with_name ("Attaching remote process"); |
| 1249 | } |
| 1250 | |
| 1251 | /* It worked... */ |
| 1252 | |
| 1253 | inferior_pid = pid; |
| 1254 | push_target (&vx_run_ops); |
| 1255 | |
| 1256 | if (vx_running) |
| 1257 | free (vx_running); |
| 1258 | vx_running = 0; |
| 1259 | } |
| 1260 | |
| 1261 | /* detach_command -- |
| 1262 | takes a program previously attached to and detaches it. |
| 1263 | The program resumes execution and will no longer stop |
| 1264 | on signals, etc. We better not have left any breakpoints |
| 1265 | in the program or it'll die when it hits one. For this |
| 1266 | to work, it may be necessary for the process to have been |
| 1267 | previously attached. It *might* work if the program was |
| 1268 | started via the normal ptrace (PTRACE_TRACEME). */ |
| 1269 | |
| 1270 | static void |
| 1271 | vx_detach (args, from_tty) |
| 1272 | char *args; |
| 1273 | int from_tty; |
| 1274 | { |
| 1275 | Rptrace ptrace_in; |
| 1276 | Ptrace_return ptrace_out; |
| 1277 | int signal = 0; |
| 1278 | int status; |
| 1279 | |
| 1280 | if (args) |
| 1281 | error ("Argument given to VxWorks \"detach\"."); |
| 1282 | |
| 1283 | if (from_tty) |
| 1284 | printf_unfiltered ("Detaching pid %s.\n", |
| 1285 | local_hex_string((unsigned long) inferior_pid)); |
| 1286 | |
| 1287 | if (args) /* FIXME, should be possible to leave suspended */ |
| 1288 | signal = atoi (args); |
| 1289 | |
| 1290 | memset ((char *)&ptrace_in, '\0', sizeof (ptrace_in)); |
| 1291 | memset ((char *)&ptrace_out, '\0', sizeof (ptrace_out)); |
| 1292 | ptrace_in.pid = inferior_pid; |
| 1293 | |
| 1294 | status = net_ptrace_clnt_call (PTRACE_DETACH, &ptrace_in, &ptrace_out); |
| 1295 | if (status == -1) |
| 1296 | error (rpcerr); |
| 1297 | if (ptrace_out.status == -1) |
| 1298 | { |
| 1299 | errno = ptrace_out.errno; |
| 1300 | perror_with_name ("Detaching VxWorks process"); |
| 1301 | } |
| 1302 | |
| 1303 | inferior_pid = 0; |
| 1304 | pop_target (); /* go back to non-executing VxWorks connection */ |
| 1305 | } |
| 1306 | |
| 1307 | /* vx_kill -- takes a running task and wipes it out. */ |
| 1308 | |
| 1309 | static void |
| 1310 | vx_kill () |
| 1311 | { |
| 1312 | Rptrace ptrace_in; |
| 1313 | Ptrace_return ptrace_out; |
| 1314 | int status; |
| 1315 | |
| 1316 | printf_unfiltered ("Killing pid %s.\n", local_hex_string((unsigned long) inferior_pid)); |
| 1317 | |
| 1318 | memset ((char *)&ptrace_in, '\0', sizeof (ptrace_in)); |
| 1319 | memset ((char *)&ptrace_out, '\0', sizeof (ptrace_out)); |
| 1320 | ptrace_in.pid = inferior_pid; |
| 1321 | |
| 1322 | status = net_ptrace_clnt_call (PTRACE_KILL, &ptrace_in, &ptrace_out); |
| 1323 | if (status == -1) |
| 1324 | warning (rpcerr); |
| 1325 | else if (ptrace_out.status == -1) |
| 1326 | { |
| 1327 | errno = ptrace_out.errno; |
| 1328 | perror_with_name ("Killing VxWorks process"); |
| 1329 | } |
| 1330 | |
| 1331 | /* If it gives good status, the process is *gone*, no events remain. |
| 1332 | If the kill failed, assume the process is gone anyhow. */ |
| 1333 | inferior_pid = 0; |
| 1334 | pop_target (); /* go back to non-executing VxWorks connection */ |
| 1335 | } |
| 1336 | |
| 1337 | /* Clean up from the VxWorks process target as it goes away. */ |
| 1338 | |
| 1339 | static void |
| 1340 | vx_proc_close (quitting) |
| 1341 | int quitting; |
| 1342 | { |
| 1343 | inferior_pid = 0; /* No longer have a process. */ |
| 1344 | if (vx_running) |
| 1345 | free (vx_running); |
| 1346 | vx_running = 0; |
| 1347 | } |
| 1348 | \f |
| 1349 | /* Make an RPC call to the VxWorks target. |
| 1350 | Returns RPC status. */ |
| 1351 | |
| 1352 | static enum clnt_stat |
| 1353 | net_clnt_call (procNum, inProc, in, outProc, out) |
| 1354 | enum ptracereq procNum; |
| 1355 | xdrproc_t inProc; |
| 1356 | char *in; |
| 1357 | xdrproc_t outProc; |
| 1358 | char *out; |
| 1359 | { |
| 1360 | enum clnt_stat status; |
| 1361 | |
| 1362 | status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout); |
| 1363 | |
| 1364 | if (status != RPC_SUCCESS) |
| 1365 | clnt_perrno (status); |
| 1366 | |
| 1367 | return status; |
| 1368 | } |
| 1369 | |
| 1370 | /* Clean up before losing control. */ |
| 1371 | |
| 1372 | static void |
| 1373 | vx_close (quitting) |
| 1374 | int quitting; |
| 1375 | { |
| 1376 | if (pClient) |
| 1377 | clnt_destroy (pClient); /* The net connection */ |
| 1378 | pClient = 0; |
| 1379 | |
| 1380 | if (vx_host) |
| 1381 | free (vx_host); /* The hostname */ |
| 1382 | vx_host = 0; |
| 1383 | } |
| 1384 | |
| 1385 | /* A vxprocess target should be started via "run" not "target". */ |
| 1386 | /*ARGSUSED*/ |
| 1387 | static void |
| 1388 | vx_proc_open (name, from_tty) |
| 1389 | char *name; |
| 1390 | int from_tty; |
| 1391 | { |
| 1392 | error ("Use the \"run\" command to start a VxWorks process."); |
| 1393 | } |
| 1394 | |
| 1395 | /* Target ops structure for accessing memory and such over the net */ |
| 1396 | |
| 1397 | struct target_ops vx_ops ; |
| 1398 | |
| 1399 | static void init_vx_ops(void) |
| 1400 | { |
| 1401 | vx_ops.to_shortname = "vxworks"; |
| 1402 | vx_ops.to_longname = "VxWorks target memory via RPC over TCP/IP"; |
| 1403 | vx_ops.to_doc = "Use VxWorks target memory. \n\ |
| 1404 | Specify the name of the machine to connect to.", |
| 1405 | vx_ops.to_open = vx_open; |
| 1406 | vx_ops.to_close = vx_close; |
| 1407 | vx_ops.to_attach = vx_attach; |
| 1408 | vx_ops.to_detach = 0; /* vx_detach, */ |
| 1409 | vx_ops.to_resume = 0; |
| 1410 | vx_ops.to_wait = 0; /* resume, wait */ |
| 1411 | vx_ops.to_fetch_registers = 0; |
| 1412 | vx_ops.to_store_registers = 0; /* read_reg, write_reg */ |
| 1413 | vx_ops.to_prepare_to_store = 0; /* prep_to_store, */ |
| 1414 | vx_ops.to_xfer_memory = vx_xfer_memory; |
| 1415 | vx_ops.to_files_info = vx_files_info; |
| 1416 | vx_ops.to_insert_breakpoint = 0; |
| 1417 | vx_ops.to_remove_breakpoint = 0; /* insert_breakpoint, remove_breakpoint */ |
| 1418 | vx_ops.to_terminal_init = 0; |
| 1419 | vx_ops.to_terminal_inferior = 0; |
| 1420 | vx_ops.to_terminal_ours_for_output = 0; |
| 1421 | vx_ops.to_terminal_ours = 0; |
| 1422 | vx_ops.to_terminal_info = 0; /* terminal stuff */ |
| 1423 | vx_ops.to_kill = 0; /* vx_kill, */ |
| 1424 | vx_ops.to_load = vx_load_command; |
| 1425 | vx_ops.to_lookup_symbol = vx_lookup_symbol; |
| 1426 | vx_ops.to_create_inferior = vx_create_inferior; |
| 1427 | vx_ops.to_mourn_inferior = 0; /* mourn_inferior */ |
| 1428 | vx_ops.to_can_run = 0; /* can_run */ |
| 1429 | vx_ops.to_notice_signals = 0; /* notice_signals */ |
| 1430 | vx_ops.to_thread_alive = 0; /* thread_alive */ |
| 1431 | vx_ops.to_stop = 0; /* to_stop */ |
| 1432 | vx_ops.to_stratum = core_stratum; |
| 1433 | vx_ops.DONT_USE = 0; /* next */ |
| 1434 | vx_ops.to_has_all_memory = 1; |
| 1435 | vx_ops.to_has_memory = 1; |
| 1436 | vx_ops.to_has_stack = 0; |
| 1437 | vx_ops.to_has_registers = 0; |
| 1438 | vx_ops.to_has_execution = 0; /* all mem, mem, stack, regs, exec */ |
| 1439 | vx_ops.to_sections = 0; |
| 1440 | vx_ops.to_sections_end = 0; |
| 1441 | vx_ops.to_magic = OPS_MAGIC; /* Always the last thing */ |
| 1442 | }; |
| 1443 | |
| 1444 | /* Target ops structure for accessing VxWorks child processes over the net */ |
| 1445 | |
| 1446 | struct target_ops vx_run_ops ; |
| 1447 | |
| 1448 | static void init_vx_run_ops(void) |
| 1449 | { |
| 1450 | vx_run_ops.to_shortname = "vxprocess"; |
| 1451 | vx_run_ops.to_longname = "VxWorks process"; |
| 1452 | vx_run_ops.to_doc = "VxWorks process; started by the \"run\" command.", |
| 1453 | vx_run_ops.to_open = vx_proc_open; |
| 1454 | vx_run_ops.to_close = vx_proc_close; |
| 1455 | vx_run_ops.to_attach = 0; |
| 1456 | vx_run_ops.to_detach = vx_detach; |
| 1457 | vx_run_ops.to_resume = vx_resume; |
| 1458 | vx_run_ops.to_wait = vx_wait; |
| 1459 | vx_run_ops.to_fetch_registers = vx_read_register; |
| 1460 | vx_run_ops.to_store_registers = vx_write_register; |
| 1461 | vx_run_ops.to_prepare_to_store = vx_prepare_to_store; |
| 1462 | vx_run_ops.to_xfer_memory = vx_xfer_memory; |
| 1463 | vx_run_ops.to_files_info = vx_run_files_info; |
| 1464 | vx_run_ops.to_insert_breakpoint = vx_insert_breakpoint; |
| 1465 | vx_run_ops.to_remove_breakpoint = vx_remove_breakpoint; |
| 1466 | vx_run_ops.to_terminal_init = 0; |
| 1467 | vx_run_ops.to_terminal_inferior = 0; |
| 1468 | vx_run_ops.to_terminal_ours_for_output = 0; |
| 1469 | vx_run_ops.to_terminal_ours = 0; |
| 1470 | vx_run_ops.to_terminal_info = 0; |
| 1471 | vx_run_ops.to_kill = vx_kill; |
| 1472 | vx_run_ops.to_load = vx_load_command; |
| 1473 | vx_run_ops.to_lookup_symbol = vx_lookup_symbol; |
| 1474 | vx_run_ops.to_create_inferior = 0; |
| 1475 | vx_run_ops.to_mourn_inferior = vx_mourn_inferior ; |
| 1476 | vx_run_ops.to_can_run = 0; |
| 1477 | vx_run_ops.to_notice_signals = 0; |
| 1478 | vx_run_ops.to_thread_alive = 0; |
| 1479 | vx_run_ops.to_stop = 0; |
| 1480 | vx_run_ops.to_stratum = process_stratum; |
| 1481 | vx_run_ops.DONT_USE = 0; |
| 1482 | vx_run_ops.to_has_all_memory = 0; |
| 1483 | vx_run_ops.to_has_memory = 1; |
| 1484 | vx_run_ops.to_has_stack = 1; |
| 1485 | vx_run_ops.to_has_registers = 1; |
| 1486 | vx_run_ops.to_has_execution = 1; |
| 1487 | vx_run_ops.to_sections = 0; |
| 1488 | vx_run_ops.to_sections_end = 0; |
| 1489 | vx_run_ops.to_magic = OPS_MAGIC; |
| 1490 | } |
| 1491 | /* ==> Remember when reading at end of file, there are two "ops" structs here. */ |
| 1492 | \f |
| 1493 | void |
| 1494 | _initialize_vx () |
| 1495 | { |
| 1496 | init_vx_ops() ; |
| 1497 | init_vx_run_ops() ; |
| 1498 | add_show_from_set |
| 1499 | (add_set_cmd ("vxworks-timeout", class_support, var_uinteger, |
| 1500 | (char *) &rpcTimeout.tv_sec, |
| 1501 | "Set seconds to wait for rpc calls to return.\n\ |
| 1502 | Set the number of seconds to wait for rpc calls to return.", &setlist), |
| 1503 | &showlist); |
| 1504 | |
| 1505 | add_target (&vx_ops); |
| 1506 | add_target (&vx_run_ops); |
| 1507 | } |