1 /* Memory-access and commands for remote VxWorks processes, for GDB.
2 Copyright (C) 1990-95, 1997-98, 1999 Free Software Foundation, Inc.
3 Contributed by Wind River Systems and Cygnus Support.
5 This file is part of GDB.
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.
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.
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,
20 Boston, MA 02111-1307, USA. */
30 #include "complaints.h"
32 #include "bfd.h" /* Required by objfiles.h. */
33 #include "symfile.h" /* Required by objfiles.h. */
35 #include "gdb-stabs.h"
37 #include "gdb_string.h"
41 #include <sys/types.h>
42 #include <sys/socket.h>
43 #define malloc bogon_malloc /* Sun claims "char *malloc()" not void * */
44 #define free bogon_free /* Sun claims "int free()" not void */
45 #define realloc bogon_realloc /* Sun claims "char *realloc()", not void * */
50 #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
52 #include "vx-share/ptrace.h"
53 #include "vx-share/xdr_ptrace.h"
54 #include "vx-share/xdr_ld.h"
55 #include "vx-share/xdr_rdb.h"
56 #include "vx-share/dbgRpcLib.h"
60 /* Maximum number of bytes to transfer in a single
61 PTRACE_{READ,WRITE}DATA request. */
62 #define VX_MEMXFER_MAX 4096
64 extern void vx_read_register ();
65 extern void vx_write_register ();
66 extern void symbol_file_command ();
67 extern int stop_soon_quietly; /* for wait_for_inferior */
69 static int net_step ();
70 static int net_ptrace_clnt_call (); /* Forward decl */
71 static enum clnt_stat net_clnt_call (); /* Forward decl */
73 /* Target ops structure for accessing memory and such over the net */
75 static struct target_ops vx_ops;
77 /* Target ops structure for accessing VxWorks child processes over the net */
79 static struct target_ops vx_run_ops;
81 /* Saved name of target host and called function for "info files".
85 static char *vx_running; /* Called function */
87 /* Nonzero means target that is being debugged remotely has a floating
92 /* Default error message when the network is forking up. */
94 static const char rpcerr[] = "network target debugging: rpc error";
96 CLIENT *pClient; /* client used in net debugging */
97 static int ptraceSock = RPC_ANYSOCK;
99 enum clnt_stat net_clnt_call ();
100 static void parse_args ();
102 static struct timeval rpcTimeout =
105 static char *skip_white_space ();
106 static char *find_white_space ();
108 /* Tell the VxWorks target system to download a file.
109 The load addresses of the text, data, and bss segments are
110 stored in *pTextAddr, *pDataAddr, and *pBssAddr (respectively).
111 Returns 0 for success, -1 for failure. */
114 net_load (char *filename, CORE_ADDR *pTextAddr, CORE_ADDR *pDataAddr,
117 enum clnt_stat status;
118 struct ldfile ldstruct;
119 struct timeval load_timeout;
121 memset ((char *) &ldstruct, '\0', sizeof (ldstruct));
123 /* We invoke clnt_call () here directly, instead of through
124 net_clnt_call (), because we need to set a large timeout value.
125 The load on the target side can take quite a while, easily
126 more than 10 seconds. The user can kill this call by typing
127 CTRL-C if there really is a problem with the load.
129 Do not change the tv_sec value without checking -- select() imposes
130 a limit of 10**8 on it for no good reason that I can see... */
132 load_timeout.tv_sec = 99999999; /* A large number, effectively inf. */
133 load_timeout.tv_usec = 0;
135 status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile,
136 &ldstruct, load_timeout);
138 if (status == RPC_SUCCESS)
140 if (*ldstruct.name == 0) /* load failed on VxWorks side */
142 *pTextAddr = ldstruct.txt_addr;
143 *pDataAddr = ldstruct.data_addr;
144 *pBssAddr = ldstruct.bss_addr;
151 /* returns 0 if successful, errno if RPC failed or VxWorks complains. */
154 net_break (int addr, u_long procnum)
156 enum clnt_stat status;
158 Rptrace ptrace_in; /* XXX This is stupid. It doesn't need to be a ptrace
159 structure. How about something smaller? */
161 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
164 ptrace_in.addr = addr;
165 ptrace_in.pid = inferior_pid;
167 status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int,
170 if (status != RPC_SUCCESS)
173 if (break_status == -1)
175 return break_status; /* probably (FIXME) zero */
178 /* returns 0 if successful, errno otherwise */
181 vx_insert_breakpoint (int addr)
183 return net_break (addr, VX_BREAK_ADD);
186 /* returns 0 if successful, errno otherwise */
189 vx_remove_breakpoint (int addr)
191 return net_break (addr, VX_BREAK_DELETE);
194 /* Start an inferior process and sets inferior_pid to its pid.
195 EXEC_FILE is the file to run.
196 ALLARGS is a string containing the arguments to the program.
197 ENV is the environment vector to pass.
198 Returns process id. Errors reported with error().
199 On VxWorks, we ignore exec_file. */
202 vx_create_inferior (char *exec_file, char *args, char **env)
204 enum clnt_stat status;
206 TASK_START taskStart;
208 memset ((char *) &passArgs, '\0', sizeof (passArgs));
209 memset ((char *) &taskStart, '\0', sizeof (taskStart));
211 /* parse arguments, put them in passArgs */
213 parse_args (args, &passArgs);
215 if (passArgs.arg_array_len == 0)
216 error ("You must specify a function name to run, and arguments if any");
218 status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs,
219 xdr_TASK_START, &taskStart);
221 if ((status != RPC_SUCCESS) || (taskStart.status == -1))
222 error ("Can't create process on remote target machine");
224 /* Save the name of the running function */
225 vx_running = savestring (passArgs.arg_array_val[0],
226 strlen (passArgs.arg_array_val[0]));
228 push_target (&vx_run_ops);
229 inferior_pid = taskStart.pid;
231 /* We will get a trace trap after one instruction.
232 Insert breakpoints and continue. */
234 init_wait_for_inferior ();
236 /* Set up the "saved terminal modes" of the inferior
237 based on what modes we are starting it with. */
238 target_terminal_init ();
240 /* Install inferior's terminal modes. */
241 target_terminal_inferior ();
243 stop_soon_quietly = 1;
244 wait_for_inferior (); /* Get the task spawn event */
245 stop_soon_quietly = 0;
247 /* insert_step_breakpoint (); FIXME, do we need this? */
248 proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
251 /* Fill ARGSTRUCT in argc/argv form with the arguments from the
252 argument string ARGSTRING. */
255 parse_args (register char *arg_string, arg_array *arg_struct)
257 register int arg_count = 0; /* number of arguments */
258 register int arg_index = 0;
261 memset ((char *) arg_struct, '\0', sizeof (arg_array));
263 /* first count how many arguments there are */
268 if (*(p0 = skip_white_space (p0)) == '\0')
270 p0 = find_white_space (p0);
274 arg_struct->arg_array_len = arg_count;
275 arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1)
278 /* now copy argument strings into arg_struct. */
280 while (*(arg_string = skip_white_space (arg_string)))
282 p0 = find_white_space (arg_string);
283 arg_struct->arg_array_val[arg_index++] = savestring (arg_string,
288 arg_struct->arg_array_val[arg_count] = NULL;
291 /* Advance a string pointer across whitespace and return a pointer
292 to the first non-white character. */
295 skip_white_space (register char *p)
297 while (*p == ' ' || *p == '\t')
302 /* Search for the first unquoted whitespace character in a string.
303 Returns a pointer to the character, or to the null terminator
304 if no whitespace is found. */
307 find_white_space (register char *p)
311 while ((c = *p) != ' ' && c != '\t' && c)
313 if (c == '\'' || c == '"')
315 while (*++p != c && *p)
328 /* Poll the VxWorks target system for an event related
329 to the debugged task.
330 Returns -1 if remote wait failed, task status otherwise. */
333 net_wait (RDB_EVENT *pEvent)
336 enum clnt_stat status;
338 memset ((char *) pEvent, '\0', sizeof (RDB_EVENT));
341 status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT,
344 /* return (status == RPC_SUCCESS)? pEvent->status: -1; */
345 if (status == RPC_SUCCESS)
346 return ((pEvent->status) ? 1 : 0);
347 else if (status == RPC_TIMEDOUT)
353 /* Suspend the remote task.
354 Returns -1 if suspend fails on target system, 0 otherwise. */
361 enum clnt_stat status;
365 /* don't let rdbTask suspend itself by passing a pid of 0 */
367 if ((pid = inferior_pid) == 0)
370 status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int,
373 return (status == RPC_SUCCESS) ? quit_status : -1;
376 /* Read a register or registers from the remote system. */
379 net_read_registers (char *reg_buf, int len, u_long procnum)
383 Ptrace_return ptrace_out;
387 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
388 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
390 /* Initialize RPC input argument structure. */
392 ptrace_in.pid = inferior_pid;
393 ptrace_in.info.ttype = NOINFO;
395 /* Initialize RPC return value structure. */
397 out_data.bytes = reg_buf;
399 ptrace_out.info.more_data = (caddr_t) & out_data;
401 /* Call RPC; take an error exit if appropriate. */
403 status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
406 if (ptrace_out.status == -1)
408 errno = ptrace_out.errno_num;
409 sprintf (message, "reading %s registers", (procnum == PTRACE_GETREGS)
412 perror_with_name (message);
416 /* Write register values to a VxWorks target. REG_BUF points to a buffer
417 containing the raw register values, LEN is the length of REG_BUF in
418 bytes, and PROCNUM is the RPC procedure number (PTRACE_SETREGS or
419 PTRACE_SETFPREGS). An error exit is taken if the RPC call fails or
420 if an error status is returned by the remote debug server. This is
421 a utility routine used by vx_write_register (). */
424 net_write_registers (char *reg_buf, int len, u_long procnum)
428 Ptrace_return ptrace_out;
432 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
433 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
435 /* Initialize RPC input argument structure. */
437 in_data.bytes = reg_buf;
440 ptrace_in.pid = inferior_pid;
441 ptrace_in.info.ttype = DATA;
442 ptrace_in.info.more_data = (caddr_t) & in_data;
444 /* Call RPC; take an error exit if appropriate. */
446 status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
449 if (ptrace_out.status == -1)
451 errno = ptrace_out.errno_num;
452 sprintf (message, "writing %s registers", (procnum == PTRACE_SETREGS)
455 perror_with_name (message);
459 /* Prepare to store registers. Since we will store all of them,
460 read out their current values now. */
463 vx_prepare_to_store (void)
465 /* Fetch all registers, if any of them are not yet fetched. */
466 read_register_bytes (0, NULL, REGISTER_BYTES);
469 /* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR
470 to debugger memory starting at MYADDR. WRITE is true if writing to the
472 Result is the number of bytes written or read (zero if error). The
473 protocol allows us to return a negative count, indicating that we can't
474 handle the current address but can handle one N bytes further, but
475 vxworks doesn't give us that information. */
478 vx_xfer_memory (memaddr, myaddr, len, write, target)
483 struct target_ops *target; /* ignored */
487 Ptrace_return ptrace_out;
489 enum ptracereq request;
492 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
493 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
495 ptrace_in.pid = inferior_pid; /* XXX pid unnecessary for READDATA */
496 ptrace_in.addr = (int) memaddr; /* Where from */
497 ptrace_in.data = len; /* How many bytes */
501 ptrace_in.info.ttype = DATA;
502 ptrace_in.info.more_data = (caddr_t) & data;
504 data.bytes = (caddr_t) myaddr; /* Where from */
505 data.len = len; /* How many bytes (again, for XDR) */
506 request = PTRACE_WRITEDATA;
510 ptrace_out.info.more_data = (caddr_t) & data;
511 request = PTRACE_READDATA;
513 /* Loop until the entire request has been satisfied, transferring
514 at most VX_MEMXFER_MAX bytes per iteration. Break from the loop
515 if an error status is returned by the remote debug server. */
520 while (nleft > 0 && status == 0)
522 nxfer = min (nleft, VX_MEMXFER_MAX);
524 ptrace_in.addr = (int) memaddr;
525 ptrace_in.data = nxfer;
526 data.bytes = (caddr_t) myaddr;
529 /* Request a block from the remote debug server; if RPC fails,
530 report an error and return to debugger command level. */
532 if (net_ptrace_clnt_call (request, &ptrace_in, &ptrace_out))
535 status = ptrace_out.status;
544 /* A target-side error has ocurred. Set errno to the error
545 code chosen by the target so that a later perror () will
546 say something meaningful. */
548 errno = ptrace_out.errno_num;
552 /* Return the number of bytes transferred. */
554 return (len - nleft);
560 printf_unfiltered ("\tAttached to host `%s'", vx_host);
561 printf_unfiltered (", which has %sfloating point", target_has_fp ? "" : "no ");
562 printf_unfiltered (".\n");
566 vx_run_files_info (void)
568 printf_unfiltered ("\tRunning %s VxWorks process %s",
569 vx_running ? "child" : "attached",
570 local_hex_string (inferior_pid));
572 printf_unfiltered (", function `%s'", vx_running);
573 printf_unfiltered (".\n");
577 vx_resume (int pid, int step, enum target_signal siggnal)
581 Ptrace_return ptrace_out;
587 if (siggnal != 0 && siggnal != stop_signal)
588 error ("Cannot send signals to VxWorks processes");
590 /* Set CONT_ADDR to the address at which we are continuing,
591 or to 1 if we are continuing from where the program stopped.
592 This conforms to traditional ptrace () usage, but at the same
593 time has special meaning for the VxWorks remote debug server.
594 If the address is not 1, the server knows that the target
595 program is jumping to a new address, which requires special
596 handling if there is a breakpoint at the new address. */
598 cont_addr = read_register (PC_REGNUM);
599 if (cont_addr == stop_pc)
602 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
603 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
606 ptrace_in.addr = cont_addr; /* Target side insists on this, or it panics. */
609 status = net_step ();
611 status = net_ptrace_clnt_call (PTRACE_CONT, &ptrace_in, &ptrace_out);
615 if (ptrace_out.status == -1)
617 errno = ptrace_out.errno_num;
618 perror_with_name ("Resuming remote process");
623 vx_mourn_inferior (void)
625 pop_target (); /* Pop back to no-child state */
626 generic_mourn_inferior ();
630 static void vx_add_symbols (char *, int, CORE_ADDR, CORE_ADDR, CORE_ADDR);
632 struct find_sect_args
634 CORE_ADDR text_start;
635 CORE_ADDR data_start;
639 static void find_sect (bfd *, asection *, void *);
642 find_sect (bfd *abfd, asection *sect, PTR obj)
644 struct find_sect_args *args = (struct find_sect_args *) obj;
646 if (bfd_get_section_flags (abfd, sect) & (SEC_CODE & SEC_READONLY))
647 args->text_start = bfd_get_section_vma (abfd, sect);
648 else if (bfd_get_section_flags (abfd, sect) & SEC_ALLOC)
650 if (bfd_get_section_flags (abfd, sect) & SEC_LOAD)
652 /* Exclude .ctor and .dtor sections which have SEC_CODE set but not
654 if (bfd_get_section_flags (abfd, sect) & SEC_DATA)
655 args->data_start = bfd_get_section_vma (abfd, sect);
658 args->bss_start = bfd_get_section_vma (abfd, sect);
663 vx_add_symbols (char *name, int from_tty, CORE_ADDR text_addr,
664 CORE_ADDR data_addr, CORE_ADDR bss_addr)
666 struct section_offsets *offs;
667 struct objfile *objfile;
668 struct find_sect_args ss;
670 /* It might be nice to suppress the breakpoint_re_set which happens here
671 because we are going to do one again after the objfile_relocate. */
672 objfile = symbol_file_add (name, from_tty, NULL, 0, 0);
674 /* This is a (slightly cheesy) way of superceding the old symbols. A less
675 cheesy way would be to find the objfile with the same name and
677 objfile_to_front (objfile);
679 offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
680 memcpy (offs, objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
685 bfd_map_over_sections (objfile->obfd, find_sect, &ss);
687 /* Both COFF and b.out frontends use these SECT_OFF_* values. */
688 offs->offsets[SECT_OFF_TEXT (objfile)] = text_addr - ss.text_start;
689 offs->offsets[SECT_OFF_DATA (objfile)] = data_addr - ss.data_start;
690 offs->offsets[SECT_OFF_BSS (objfile)] = bss_addr - ss.bss_start;
691 objfile_relocate (objfile, offs);
694 /* This function allows the addition of incrementally linked object files. */
697 vx_load_command (char *arg_string, int from_tty)
704 error ("The load command takes a file name");
706 arg_string = tilde_expand (arg_string);
707 make_cleanup (free, arg_string);
711 /* Refuse to load the module if a debugged task is running. Doing so
712 can have a number of unpleasant consequences to the running task. */
714 if (inferior_pid != 0 && target_has_execution)
716 if (query ("You may not load a module while the target task is running.\n\
717 Kill the target task? "))
720 error ("Load cancelled.");
725 if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1)
726 error ("Load failed on target machine");
729 vx_add_symbols (arg_string, from_tty, text_addr, data_addr, bss_addr);
731 /* Getting new symbols may change our opinion about what is
733 reinit_frame_cache ();
736 /* Single step the target program at the source or machine level.
737 Takes an error exit if rpc fails.
738 Returns -1 if remote single-step operation fails, else 0. */
743 enum clnt_stat status;
745 SOURCE_STEP source_step;
747 source_step.taskId = inferior_pid;
751 source_step.startAddr = step_range_start;
752 source_step.endAddr = step_range_end;
756 source_step.startAddr = 0;
757 source_step.endAddr = 0;
760 status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step,
761 xdr_int, &step_status);
763 if (status == RPC_SUCCESS)
769 /* Emulate ptrace using RPC calls to the VxWorks target system.
770 Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */
773 net_ptrace_clnt_call (enum ptracereq request, Rptrace *pPtraceIn,
774 Ptrace_return *pPtraceOut)
776 enum clnt_stat status;
778 status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return,
781 if (status != RPC_SUCCESS)
787 /* Query the target for the name of the file from which VxWorks was
788 booted. pBootFile is the address of a pointer to the buffer to
789 receive the file name; if the pointer pointed to by pBootFile is
790 NULL, memory for the buffer will be allocated by XDR.
791 Returns -1 if rpc failed, 0 otherwise. */
794 net_get_boot_file (char **pBootFile)
796 enum clnt_stat status;
798 status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0,
799 xdr_wrapstring, pBootFile);
800 return (status == RPC_SUCCESS) ? 0 : -1;
803 /* Fetch a list of loaded object modules from the VxWorks target.
804 Returns -1 if rpc failed, 0 otherwise
805 There's no way to check if the returned loadTable is correct.
806 VxWorks doesn't check it. */
809 net_get_symbols (pLoadTable)
810 ldtabl *pLoadTable; /* return pointer to ldtabl here */
812 enum clnt_stat status;
814 memset ((char *) pLoadTable, '\0', sizeof (struct ldtabl));
816 status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable);
817 return (status == RPC_SUCCESS) ? 0 : -1;
820 /* Look up a symbol in the VxWorks target's symbol table.
821 Returns status of symbol read on target side (0=success, -1=fail)
822 Returns -1 and complain()s if rpc fails. */
824 struct complaint cant_contact_target =
825 {"Lost contact with VxWorks target", 0, 0};
828 vx_lookup_symbol (char *name, /* symbol name */
831 enum clnt_stat status;
832 SYMBOL_ADDR symbolAddr;
835 memset ((char *) &symbolAddr, '\0', sizeof (symbolAddr));
837 status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name,
838 xdr_SYMBOL_ADDR, &symbolAddr);
839 if (status != RPC_SUCCESS)
841 complain (&cant_contact_target);
845 *pAddr = symbolAddr.addr;
846 return symbolAddr.status;
849 /* Check to see if the VxWorks target has a floating point coprocessor.
850 Returns 1 if target has floating point processor, 0 otherwise.
851 Calls error() if rpc fails. */
854 net_check_for_fp (void)
856 enum clnt_stat status;
857 bool_t fp = 0; /* true if fp processor is present on target board */
859 status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp);
860 if (status != RPC_SUCCESS)
866 /* Establish an RPC connection with the VxWorks target system.
867 Calls error () if unable to establish connection. */
870 net_connect (char *host)
872 struct sockaddr_in destAddr;
873 struct hostent *destHost;
876 /* Get the internet address for the given host. Allow a numeric
877 IP address or a hostname. */
879 addr = inet_addr (host);
882 destHost = (struct hostent *) gethostbyname (host);
883 if (destHost == NULL)
884 /* FIXME: Probably should include hostname here in quotes.
885 For example if the user types "target vxworks vx960 " it should
886 say "Invalid host `vx960 '." not just "Invalid hostname". */
887 error ("Invalid hostname. Couldn't find remote host address.");
888 addr = *(unsigned long *) destHost->h_addr;
891 memset (&destAddr, '\0', sizeof (destAddr));
893 destAddr.sin_addr.s_addr = addr;
894 destAddr.sin_family = AF_INET;
895 destAddr.sin_port = 0; /* set to actual port that remote
896 ptrace is listening on. */
898 /* Create a tcp client transport on which to issue
899 calls to the remote ptrace server. */
901 ptraceSock = RPC_ANYSOCK;
902 pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0);
903 /* FIXME, here is where we deal with different version numbers of the
908 clnt_pcreateerror ("\tnet_connect");
909 error ("Couldn't connect to remote target.");
913 /* Sleep for the specified number of milliseconds
914 * (assumed to be less than 1000).
915 * If select () is interrupted, returns immediately;
916 * takes an error exit if select () fails for some other reason.
922 struct timeval select_timeout;
925 select_timeout.tv_sec = 0;
926 select_timeout.tv_usec = ms * 1000;
928 status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0,
931 if (status < 0 && errno != EINTR)
932 perror_with_name ("select");
936 vx_wait (int pid_to_wait_for, struct target_waitstatus *status)
944 /* If CTRL-C is hit during this loop,
945 suspend the inferior process. */
950 quit_failed = (net_quit () == -1);
954 /* If a net_quit () or net_wait () call has failed,
955 allow the user to break the connection with the target.
956 We can't simply error () out of this loop, since the
957 data structures representing the state of the inferior
958 are in an inconsistent state. */
960 if (quit_failed || net_wait (&rdbEvent) == -1)
963 if (query ("Can't %s. Disconnect from target system? ",
964 (quit_failed) ? "suspend remote task"
965 : "get status of remote task"))
967 target_mourn_inferior ();
968 error ("Use the \"target\" command to reconnect.");
972 terminal_inferior ();
977 pid = rdbEvent.taskId;
980 sleep_ms (200); /* FIXME Don't kill the network too badly */
982 else if (pid != inferior_pid)
983 internal_error ("Bad pid for debugged task: %s\n",
984 local_hex_string ((unsigned long) pid));
988 /* The mostly likely kind. */
989 status->kind = TARGET_WAITKIND_STOPPED;
991 switch (rdbEvent.eventType)
994 status->kind = TARGET_WAITKIND_EXITED;
995 /* FIXME is it possible to distinguish between a
996 normal vs abnormal exit in VxWorks? */
997 status->value.integer = 0;
1001 /* Task was just started. */
1002 status->value.sig = TARGET_SIGNAL_TRAP;
1006 status->value.sig = TARGET_SIGNAL_TRAP;
1007 /* XXX was it stopped by a signal? act accordingly */
1010 case EVENT_BREAK: /* Breakpoint was hit. */
1011 status->value.sig = TARGET_SIGNAL_TRAP;
1014 case EVENT_SUSPEND: /* Task was suspended, probably by ^C. */
1015 status->value.sig = TARGET_SIGNAL_INT;
1018 case EVENT_BUS_ERR: /* Task made evil nasty reference. */
1019 status->value.sig = TARGET_SIGNAL_BUS;
1022 case EVENT_ZERO_DIV: /* Division by zero */
1023 status->value.sig = TARGET_SIGNAL_FPE;
1028 status->value.sig = i960_fault_to_signal (rdbEvent.sigType);
1030 /* Back in the old days, before enum target_signal, this code used
1031 to add NSIG to the signal number and claim that PRINT_RANDOM_SIGNAL
1032 would take care of it. But PRINT_RANDOM_SIGNAL has never been
1033 defined except on the i960, so I don't really know what we are
1034 supposed to do on other architectures. */
1035 status->value.sig = TARGET_SIGNAL_UNKNOWN;
1043 symbol_stub (char *arg)
1045 symbol_file_command (arg, 0);
1050 add_symbol_stub (char *arg)
1052 struct ldfile *pLoadFile = (struct ldfile *) arg;
1054 printf_unfiltered ("\t%s: ", pLoadFile->name);
1055 vx_add_symbols (pLoadFile->name, 0, pLoadFile->txt_addr,
1056 pLoadFile->data_addr, pLoadFile->bss_addr);
1057 printf_unfiltered ("ok\n");
1060 /* Target command for VxWorks target systems.
1062 Used in vxgdb. Takes the name of a remote target machine
1063 running vxWorks and connects to it to initialize remote network
1067 vx_open (char *args, int from_tty)
1069 extern int close ();
1071 extern char *source_path;
1072 struct ldtabl loadTable;
1073 struct ldfile *pLoadFile;
1075 extern CLIENT *pClient;
1076 int symbols_added = 0;
1079 error_no_arg ("target machine name");
1081 target_preopen (from_tty);
1083 unpush_target (&vx_ops);
1084 printf_unfiltered ("Attaching remote machine across net...\n");
1085 gdb_flush (gdb_stdout);
1087 /* Allow the user to kill the connect attempt by typing ^C.
1088 Wait until the call to target_has_fp () completes before
1089 disallowing an immediate quit, since even if net_connect ()
1090 is successful, the remote debug server might be hung. */
1095 target_has_fp = net_check_for_fp ();
1096 printf_filtered ("Connected to %s.\n", args);
1100 push_target (&vx_ops);
1102 /* Save a copy of the target host's name. */
1103 vx_host = savestring (args, strlen (args));
1105 /* Find out the name of the file from which the target was booted
1106 and load its symbol table. */
1108 printf_filtered ("Looking in Unix path for all loaded modules:\n");
1110 if (!net_get_boot_file (&bootFile))
1114 printf_filtered ("\t%s: ", bootFile);
1115 /* This assumes that the kernel is never relocated. Hope that is an
1116 accurate assumption. */
1120 "Error while reading symbols from boot file:\n",
1122 puts_filtered ("ok\n");
1125 printf_unfiltered ("VxWorks kernel symbols not loaded.\n");
1128 error ("Can't retrieve boot file name from target machine.");
1130 clnt_freeres (pClient, xdr_wrapstring, &bootFile);
1132 if (net_get_symbols (&loadTable) != 0)
1133 error ("Can't read loaded modules from target machine");
1136 while (++i < loadTable.tbl_size)
1138 QUIT; /* FIXME, avoids clnt_freeres below: mem leak */
1139 pLoadFile = &loadTable.tbl_ent[i];
1143 struct cleanup *old_chain;
1144 char *fullname = NULL;
1146 desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname);
1148 perror_with_name (pLoadFile->name);
1149 old_chain = make_cleanup (close, desc);
1150 add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr,
1151 pLoadFile->bss_addr);
1152 do_cleanups (old_chain);
1155 /* FIXME: Is there something better to search than the PATH? (probably
1156 not the source path, since source might be in different directories
1159 if (catch_errors (add_symbol_stub, (char *) pLoadFile, (char *) 0,
1164 printf_filtered ("Done.\n");
1166 clnt_freeres (pClient, xdr_ldtabl, &loadTable);
1168 /* Getting new symbols may change our opinion about what is
1171 reinit_frame_cache ();
1174 /* Takes a task started up outside of gdb and ``attaches'' to it.
1175 This stops it cold in its tracks and allows us to start tracing it. */
1178 vx_attach (char *args, int from_tty)
1183 Ptrace_return ptrace_out;
1187 error_no_arg ("process-id to attach");
1189 pid = strtoul (args, &cptr, 0);
1190 if ((cptr == args) || (*cptr != '\0'))
1191 error ("Invalid process-id -- give a single number in decimal or 0xhex");
1194 printf_unfiltered ("Attaching pid %s.\n",
1195 local_hex_string ((unsigned long) pid));
1197 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
1198 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
1199 ptrace_in.pid = pid;
1201 status = net_ptrace_clnt_call (PTRACE_ATTACH, &ptrace_in, &ptrace_out);
1204 if (ptrace_out.status == -1)
1206 errno = ptrace_out.errno_num;
1207 perror_with_name ("Attaching remote process");
1213 push_target (&vx_run_ops);
1220 /* detach_command --
1221 takes a program previously attached to and detaches it.
1222 The program resumes execution and will no longer stop
1223 on signals, etc. We better not have left any breakpoints
1224 in the program or it'll die when it hits one. For this
1225 to work, it may be necessary for the process to have been
1226 previously attached. It *might* work if the program was
1227 started via the normal ptrace (PTRACE_TRACEME). */
1230 vx_detach (char *args, int from_tty)
1233 Ptrace_return ptrace_out;
1238 error ("Argument given to VxWorks \"detach\".");
1241 printf_unfiltered ("Detaching pid %s.\n",
1242 local_hex_string ((unsigned long) inferior_pid));
1244 if (args) /* FIXME, should be possible to leave suspended */
1245 signal = atoi (args);
1247 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
1248 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
1249 ptrace_in.pid = inferior_pid;
1251 status = net_ptrace_clnt_call (PTRACE_DETACH, &ptrace_in, &ptrace_out);
1254 if (ptrace_out.status == -1)
1256 errno = ptrace_out.errno_num;
1257 perror_with_name ("Detaching VxWorks process");
1261 pop_target (); /* go back to non-executing VxWorks connection */
1264 /* vx_kill -- takes a running task and wipes it out. */
1270 Ptrace_return ptrace_out;
1273 printf_unfiltered ("Killing pid %s.\n", local_hex_string ((unsigned long) inferior_pid));
1275 memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
1276 memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
1277 ptrace_in.pid = inferior_pid;
1279 status = net_ptrace_clnt_call (PTRACE_KILL, &ptrace_in, &ptrace_out);
1282 else if (ptrace_out.status == -1)
1284 errno = ptrace_out.errno_num;
1285 perror_with_name ("Killing VxWorks process");
1288 /* If it gives good status, the process is *gone*, no events remain.
1289 If the kill failed, assume the process is gone anyhow. */
1291 pop_target (); /* go back to non-executing VxWorks connection */
1294 /* Clean up from the VxWorks process target as it goes away. */
1297 vx_proc_close (int quitting)
1299 inferior_pid = 0; /* No longer have a process. */
1305 /* Make an RPC call to the VxWorks target.
1306 Returns RPC status. */
1308 static enum clnt_stat
1309 net_clnt_call (enum ptracereq procNum, xdrproc_t inProc, char *in,
1310 xdrproc_t outProc, char *out)
1312 enum clnt_stat status;
1314 status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout);
1316 if (status != RPC_SUCCESS)
1317 clnt_perrno (status);
1322 /* Clean up before losing control. */
1325 vx_close (int quitting)
1328 clnt_destroy (pClient); /* The net connection */
1332 free (vx_host); /* The hostname */
1336 /* A vxprocess target should be started via "run" not "target". */
1339 vx_proc_open (char *name, int from_tty)
1341 error ("Use the \"run\" command to start a VxWorks process.");
1347 vx_ops.to_shortname = "vxworks";
1348 vx_ops.to_longname = "VxWorks target memory via RPC over TCP/IP";
1349 vx_ops.to_doc = "Use VxWorks target memory. \n\
1350 Specify the name of the machine to connect to.";
1351 vx_ops.to_open = vx_open;
1352 vx_ops.to_close = vx_close;
1353 vx_ops.to_attach = vx_attach;
1354 vx_ops.to_xfer_memory = vx_xfer_memory;
1355 vx_ops.to_files_info = vx_files_info;
1356 vx_ops.to_load = vx_load_command;
1357 vx_ops.to_lookup_symbol = vx_lookup_symbol;
1358 vx_ops.to_create_inferior = vx_create_inferior;
1359 vx_ops.to_stratum = core_stratum;
1360 vx_ops.to_has_all_memory = 1;
1361 vx_ops.to_has_memory = 1;
1362 vx_ops.to_magic = OPS_MAGIC; /* Always the last thing */
1366 init_vx_run_ops (void)
1368 vx_run_ops.to_shortname = "vxprocess";
1369 vx_run_ops.to_longname = "VxWorks process";
1370 vx_run_ops.to_doc = "VxWorks process; started by the \"run\" command.";
1371 vx_run_ops.to_open = vx_proc_open;
1372 vx_run_ops.to_close = vx_proc_close;
1373 vx_run_ops.to_detach = vx_detach;
1374 vx_run_ops.to_resume = vx_resume;
1375 vx_run_ops.to_wait = vx_wait;
1376 vx_run_ops.to_fetch_registers = vx_read_register;
1377 vx_run_ops.to_store_registers = vx_write_register;
1378 vx_run_ops.to_prepare_to_store = vx_prepare_to_store;
1379 vx_run_ops.to_xfer_memory = vx_xfer_memory;
1380 vx_run_ops.to_files_info = vx_run_files_info;
1381 vx_run_ops.to_insert_breakpoint = vx_insert_breakpoint;
1382 vx_run_ops.to_remove_breakpoint = vx_remove_breakpoint;
1383 vx_run_ops.to_kill = vx_kill;
1384 vx_run_ops.to_load = vx_load_command;
1385 vx_run_ops.to_lookup_symbol = vx_lookup_symbol;
1386 vx_run_ops.to_mourn_inferior = vx_mourn_inferior;
1387 vx_run_ops.to_stratum = process_stratum;
1388 vx_run_ops.to_has_memory = 1;
1389 vx_run_ops.to_has_stack = 1;
1390 vx_run_ops.to_has_registers = 1;
1391 vx_run_ops.to_has_execution = 1;
1392 vx_run_ops.to_magic = OPS_MAGIC;
1396 _initialize_vx (void)
1399 add_target (&vx_ops);
1401 add_target (&vx_run_ops);
1404 (add_set_cmd ("vxworks-timeout", class_support, var_uinteger,
1405 (char *) &rpcTimeout.tv_sec,
1406 "Set seconds to wait for rpc calls to return.\n\
1407 Set the number of seconds to wait for rpc calls to return.", &setlist),