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
471 inferior. TARGET is unused.
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 (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
479 struct target_ops
*target
)
483 Ptrace_return ptrace_out
;
485 enum ptracereq request
;
488 memset ((char *) &ptrace_in
, '\0', sizeof (ptrace_in
));
489 memset ((char *) &ptrace_out
, '\0', sizeof (ptrace_out
));
491 ptrace_in
.pid
= inferior_pid
; /* XXX pid unnecessary for READDATA */
492 ptrace_in
.addr
= (int) memaddr
; /* Where from */
493 ptrace_in
.data
= len
; /* How many bytes */
497 ptrace_in
.info
.ttype
= DATA
;
498 ptrace_in
.info
.more_data
= (caddr_t
) & data
;
500 data
.bytes
= (caddr_t
) myaddr
; /* Where from */
501 data
.len
= len
; /* How many bytes (again, for XDR) */
502 request
= PTRACE_WRITEDATA
;
506 ptrace_out
.info
.more_data
= (caddr_t
) & data
;
507 request
= PTRACE_READDATA
;
509 /* Loop until the entire request has been satisfied, transferring
510 at most VX_MEMXFER_MAX bytes per iteration. Break from the loop
511 if an error status is returned by the remote debug server. */
516 while (nleft
> 0 && status
== 0)
518 nxfer
= min (nleft
, VX_MEMXFER_MAX
);
520 ptrace_in
.addr
= (int) memaddr
;
521 ptrace_in
.data
= nxfer
;
522 data
.bytes
= (caddr_t
) myaddr
;
525 /* Request a block from the remote debug server; if RPC fails,
526 report an error and return to debugger command level. */
528 if (net_ptrace_clnt_call (request
, &ptrace_in
, &ptrace_out
))
531 status
= ptrace_out
.status
;
540 /* A target-side error has ocurred. Set errno to the error
541 code chosen by the target so that a later perror () will
542 say something meaningful. */
544 errno
= ptrace_out
.errno_num
;
548 /* Return the number of bytes transferred. */
550 return (len
- nleft
);
556 printf_unfiltered ("\tAttached to host `%s'", vx_host
);
557 printf_unfiltered (", which has %sfloating point", target_has_fp
? "" : "no ");
558 printf_unfiltered (".\n");
562 vx_run_files_info (void)
564 printf_unfiltered ("\tRunning %s VxWorks process %s",
565 vx_running
? "child" : "attached",
566 local_hex_string (inferior_pid
));
568 printf_unfiltered (", function `%s'", vx_running
);
569 printf_unfiltered (".\n");
573 vx_resume (int pid
, int step
, enum target_signal siggnal
)
577 Ptrace_return ptrace_out
;
583 if (siggnal
!= 0 && siggnal
!= stop_signal
)
584 error ("Cannot send signals to VxWorks processes");
586 /* Set CONT_ADDR to the address at which we are continuing,
587 or to 1 if we are continuing from where the program stopped.
588 This conforms to traditional ptrace () usage, but at the same
589 time has special meaning for the VxWorks remote debug server.
590 If the address is not 1, the server knows that the target
591 program is jumping to a new address, which requires special
592 handling if there is a breakpoint at the new address. */
594 cont_addr
= read_register (PC_REGNUM
);
595 if (cont_addr
== stop_pc
)
598 memset ((char *) &ptrace_in
, '\0', sizeof (ptrace_in
));
599 memset ((char *) &ptrace_out
, '\0', sizeof (ptrace_out
));
602 ptrace_in
.addr
= cont_addr
; /* Target side insists on this, or it panics. */
605 status
= net_step ();
607 status
= net_ptrace_clnt_call (PTRACE_CONT
, &ptrace_in
, &ptrace_out
);
611 if (ptrace_out
.status
== -1)
613 errno
= ptrace_out
.errno_num
;
614 perror_with_name ("Resuming remote process");
619 vx_mourn_inferior (void)
621 pop_target (); /* Pop back to no-child state */
622 generic_mourn_inferior ();
626 static void vx_add_symbols (char *, int, CORE_ADDR
, CORE_ADDR
, CORE_ADDR
);
628 struct find_sect_args
630 CORE_ADDR text_start
;
631 CORE_ADDR data_start
;
635 static void find_sect (bfd
*, asection
*, void *);
638 find_sect (bfd
*abfd
, asection
*sect
, PTR obj
)
640 struct find_sect_args
*args
= (struct find_sect_args
*) obj
;
642 if (bfd_get_section_flags (abfd
, sect
) & (SEC_CODE
& SEC_READONLY
))
643 args
->text_start
= bfd_get_section_vma (abfd
, sect
);
644 else if (bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
)
646 if (bfd_get_section_flags (abfd
, sect
) & SEC_LOAD
)
648 /* Exclude .ctor and .dtor sections which have SEC_CODE set but not
650 if (bfd_get_section_flags (abfd
, sect
) & SEC_DATA
)
651 args
->data_start
= bfd_get_section_vma (abfd
, sect
);
654 args
->bss_start
= bfd_get_section_vma (abfd
, sect
);
659 vx_add_symbols (char *name
, int from_tty
, CORE_ADDR text_addr
,
660 CORE_ADDR data_addr
, CORE_ADDR bss_addr
)
662 struct section_offsets
*offs
;
663 struct objfile
*objfile
;
664 struct find_sect_args ss
;
666 /* It might be nice to suppress the breakpoint_re_set which happens here
667 because we are going to do one again after the objfile_relocate. */
668 objfile
= symbol_file_add (name
, from_tty
, NULL
, 0, 0);
670 /* This is a (slightly cheesy) way of superceding the old symbols. A less
671 cheesy way would be to find the objfile with the same name and
673 objfile_to_front (objfile
);
675 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
676 memcpy (offs
, objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
681 bfd_map_over_sections (objfile
->obfd
, find_sect
, &ss
);
683 /* Both COFF and b.out frontends use these SECT_OFF_* values. */
684 offs
->offsets
[SECT_OFF_TEXT (objfile
)] = text_addr
- ss
.text_start
;
685 offs
->offsets
[SECT_OFF_DATA (objfile
)] = data_addr
- ss
.data_start
;
686 offs
->offsets
[SECT_OFF_BSS (objfile
)] = bss_addr
- ss
.bss_start
;
687 objfile_relocate (objfile
, offs
);
690 /* This function allows the addition of incrementally linked object files. */
693 vx_load_command (char *arg_string
, int from_tty
)
700 error ("The load command takes a file name");
702 arg_string
= tilde_expand (arg_string
);
703 make_cleanup (xfree
, arg_string
);
707 /* Refuse to load the module if a debugged task is running. Doing so
708 can have a number of unpleasant consequences to the running task. */
710 if (inferior_pid
!= 0 && target_has_execution
)
712 if (query ("You may not load a module while the target task is running.\n\
713 Kill the target task? "))
716 error ("Load canceled.");
721 if (net_load (arg_string
, &text_addr
, &data_addr
, &bss_addr
) == -1)
722 error ("Load failed on target machine");
725 vx_add_symbols (arg_string
, from_tty
, text_addr
, data_addr
, bss_addr
);
727 /* Getting new symbols may change our opinion about what is
729 reinit_frame_cache ();
732 /* Single step the target program at the source or machine level.
733 Takes an error exit if rpc fails.
734 Returns -1 if remote single-step operation fails, else 0. */
739 enum clnt_stat status
;
741 SOURCE_STEP source_step
;
743 source_step
.taskId
= inferior_pid
;
747 source_step
.startAddr
= step_range_start
;
748 source_step
.endAddr
= step_range_end
;
752 source_step
.startAddr
= 0;
753 source_step
.endAddr
= 0;
756 status
= net_clnt_call (VX_SOURCE_STEP
, xdr_SOURCE_STEP
, &source_step
,
757 xdr_int
, &step_status
);
759 if (status
== RPC_SUCCESS
)
765 /* Emulate ptrace using RPC calls to the VxWorks target system.
766 Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */
769 net_ptrace_clnt_call (enum ptracereq request
, Rptrace
*pPtraceIn
,
770 Ptrace_return
*pPtraceOut
)
772 enum clnt_stat status
;
774 status
= net_clnt_call (request
, xdr_rptrace
, pPtraceIn
, xdr_ptrace_return
,
777 if (status
!= RPC_SUCCESS
)
783 /* Query the target for the name of the file from which VxWorks was
784 booted. pBootFile is the address of a pointer to the buffer to
785 receive the file name; if the pointer pointed to by pBootFile is
786 NULL, memory for the buffer will be allocated by XDR.
787 Returns -1 if rpc failed, 0 otherwise. */
790 net_get_boot_file (char **pBootFile
)
792 enum clnt_stat status
;
794 status
= net_clnt_call (VX_BOOT_FILE_INQ
, xdr_void
, (char *) 0,
795 xdr_wrapstring
, pBootFile
);
796 return (status
== RPC_SUCCESS
) ? 0 : -1;
799 /* Fetch a list of loaded object modules from the VxWorks target
800 and store in PLOADTABLE.
801 Returns -1 if rpc failed, 0 otherwise
802 There's no way to check if the returned loadTable is correct.
803 VxWorks doesn't check it. */
806 net_get_symbols (ldtabl
*pLoadTable
)
808 enum clnt_stat status
;
810 memset ((char *) pLoadTable
, '\0', sizeof (struct ldtabl
));
812 status
= net_clnt_call (VX_STATE_INQ
, xdr_void
, 0, xdr_ldtabl
, pLoadTable
);
813 return (status
== RPC_SUCCESS
) ? 0 : -1;
816 /* Look up a symbol in the VxWorks target's symbol table.
817 Returns status of symbol read on target side (0=success, -1=fail)
818 Returns -1 and complain()s if rpc fails. */
820 struct complaint cant_contact_target
=
821 {"Lost contact with VxWorks target", 0, 0};
824 vx_lookup_symbol (char *name
, /* symbol name */
827 enum clnt_stat status
;
828 SYMBOL_ADDR symbolAddr
;
831 memset ((char *) &symbolAddr
, '\0', sizeof (symbolAddr
));
833 status
= net_clnt_call (VX_SYMBOL_INQ
, xdr_wrapstring
, &name
,
834 xdr_SYMBOL_ADDR
, &symbolAddr
);
835 if (status
!= RPC_SUCCESS
)
837 complain (&cant_contact_target
);
841 *pAddr
= symbolAddr
.addr
;
842 return symbolAddr
.status
;
845 /* Check to see if the VxWorks target has a floating point coprocessor.
846 Returns 1 if target has floating point processor, 0 otherwise.
847 Calls error() if rpc fails. */
850 net_check_for_fp (void)
852 enum clnt_stat status
;
853 bool_t fp
= 0; /* true if fp processor is present on target board */
855 status
= net_clnt_call (VX_FP_INQUIRE
, xdr_void
, 0, xdr_bool
, &fp
);
856 if (status
!= RPC_SUCCESS
)
862 /* Establish an RPC connection with the VxWorks target system.
863 Calls error () if unable to establish connection. */
866 net_connect (char *host
)
868 struct sockaddr_in destAddr
;
869 struct hostent
*destHost
;
872 /* Get the internet address for the given host. Allow a numeric
873 IP address or a hostname. */
875 addr
= inet_addr (host
);
878 destHost
= (struct hostent
*) gethostbyname (host
);
879 if (destHost
== NULL
)
880 /* FIXME: Probably should include hostname here in quotes.
881 For example if the user types "target vxworks vx960 " it should
882 say "Invalid host `vx960 '." not just "Invalid hostname". */
883 error ("Invalid hostname. Couldn't find remote host address.");
884 addr
= *(unsigned long *) destHost
->h_addr
;
887 memset (&destAddr
, '\0', sizeof (destAddr
));
889 destAddr
.sin_addr
.s_addr
= addr
;
890 destAddr
.sin_family
= AF_INET
;
891 destAddr
.sin_port
= 0; /* set to actual port that remote
892 ptrace is listening on. */
894 /* Create a tcp client transport on which to issue
895 calls to the remote ptrace server. */
897 ptraceSock
= RPC_ANYSOCK
;
898 pClient
= clnttcp_create (&destAddr
, RDBPROG
, RDBVERS
, &ptraceSock
, 0, 0);
899 /* FIXME, here is where we deal with different version numbers of the
904 clnt_pcreateerror ("\tnet_connect");
905 error ("Couldn't connect to remote target.");
909 /* Sleep for the specified number of milliseconds
910 * (assumed to be less than 1000).
911 * If select () is interrupted, returns immediately;
912 * takes an error exit if select () fails for some other reason.
918 struct timeval select_timeout
;
921 select_timeout
.tv_sec
= 0;
922 select_timeout
.tv_usec
= ms
* 1000;
924 status
= select (0, (fd_set
*) 0, (fd_set
*) 0, (fd_set
*) 0,
927 if (status
< 0 && errno
!= EINTR
)
928 perror_with_name ("select");
932 vx_wait (int pid_to_wait_for
, struct target_waitstatus
*status
)
940 /* If CTRL-C is hit during this loop,
941 suspend the inferior process. */
946 quit_failed
= (net_quit () == -1);
950 /* If a net_quit () or net_wait () call has failed,
951 allow the user to break the connection with the target.
952 We can't simply error () out of this loop, since the
953 data structures representing the state of the inferior
954 are in an inconsistent state. */
956 if (quit_failed
|| net_wait (&rdbEvent
) == -1)
959 if (query ("Can't %s. Disconnect from target system? ",
960 (quit_failed
) ? "suspend remote task"
961 : "get status of remote task"))
963 target_mourn_inferior ();
964 error ("Use the \"target\" command to reconnect.");
968 terminal_inferior ();
973 pid
= rdbEvent
.taskId
;
976 sleep_ms (200); /* FIXME Don't kill the network too badly */
978 else if (pid
!= inferior_pid
)
979 internal_error ("Bad pid for debugged task: %s\n",
980 local_hex_string ((unsigned long) pid
));
984 /* The mostly likely kind. */
985 status
->kind
= TARGET_WAITKIND_STOPPED
;
987 switch (rdbEvent
.eventType
)
990 status
->kind
= TARGET_WAITKIND_EXITED
;
991 /* FIXME is it possible to distinguish between a
992 normal vs abnormal exit in VxWorks? */
993 status
->value
.integer
= 0;
997 /* Task was just started. */
998 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1002 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1003 /* XXX was it stopped by a signal? act accordingly */
1006 case EVENT_BREAK
: /* Breakpoint was hit. */
1007 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1010 case EVENT_SUSPEND
: /* Task was suspended, probably by ^C. */
1011 status
->value
.sig
= TARGET_SIGNAL_INT
;
1014 case EVENT_BUS_ERR
: /* Task made evil nasty reference. */
1015 status
->value
.sig
= TARGET_SIGNAL_BUS
;
1018 case EVENT_ZERO_DIV
: /* Division by zero */
1019 status
->value
.sig
= TARGET_SIGNAL_FPE
;
1024 status
->value
.sig
= i960_fault_to_signal (rdbEvent
.sigType
);
1026 /* Back in the old days, before enum target_signal, this code used
1027 to add NSIG to the signal number and claim that PRINT_RANDOM_SIGNAL
1028 would take care of it. But PRINT_RANDOM_SIGNAL has never been
1029 defined except on the i960, so I don't really know what we are
1030 supposed to do on other architectures. */
1031 status
->value
.sig
= TARGET_SIGNAL_UNKNOWN
;
1039 symbol_stub (char *arg
)
1041 symbol_file_command (arg
, 0);
1046 add_symbol_stub (char *arg
)
1048 struct ldfile
*pLoadFile
= (struct ldfile
*) arg
;
1050 printf_unfiltered ("\t%s: ", pLoadFile
->name
);
1051 vx_add_symbols (pLoadFile
->name
, 0, pLoadFile
->txt_addr
,
1052 pLoadFile
->data_addr
, pLoadFile
->bss_addr
);
1053 printf_unfiltered ("ok\n");
1056 /* Target command for VxWorks target systems.
1058 Used in vxgdb. Takes the name of a remote target machine
1059 running vxWorks and connects to it to initialize remote network
1063 vx_open (char *args
, int from_tty
)
1065 extern int close ();
1067 extern char *source_path
;
1068 struct ldtabl loadTable
;
1069 struct ldfile
*pLoadFile
;
1071 extern CLIENT
*pClient
;
1072 int symbols_added
= 0;
1075 error_no_arg ("target machine name");
1077 target_preopen (from_tty
);
1079 unpush_target (&vx_ops
);
1080 printf_unfiltered ("Attaching remote machine across net...\n");
1081 gdb_flush (gdb_stdout
);
1083 /* Allow the user to kill the connect attempt by typing ^C.
1084 Wait until the call to target_has_fp () completes before
1085 disallowing an immediate quit, since even if net_connect ()
1086 is successful, the remote debug server might be hung. */
1091 target_has_fp
= net_check_for_fp ();
1092 printf_filtered ("Connected to %s.\n", args
);
1096 push_target (&vx_ops
);
1098 /* Save a copy of the target host's name. */
1099 vx_host
= savestring (args
, strlen (args
));
1101 /* Find out the name of the file from which the target was booted
1102 and load its symbol table. */
1104 printf_filtered ("Looking in Unix path for all loaded modules:\n");
1106 if (!net_get_boot_file (&bootFile
))
1110 printf_filtered ("\t%s: ", bootFile
);
1111 /* This assumes that the kernel is never relocated. Hope that is an
1112 accurate assumption. */
1116 "Error while reading symbols from boot file:\n",
1118 puts_filtered ("ok\n");
1121 printf_unfiltered ("VxWorks kernel symbols not loaded.\n");
1124 error ("Can't retrieve boot file name from target machine.");
1126 clnt_freeres (pClient
, xdr_wrapstring
, &bootFile
);
1128 if (net_get_symbols (&loadTable
) != 0)
1129 error ("Can't read loaded modules from target machine");
1132 while (++i
< loadTable
.tbl_size
)
1134 QUIT
; /* FIXME, avoids clnt_freeres below: mem leak */
1135 pLoadFile
= &loadTable
.tbl_ent
[i
];
1139 struct cleanup
*old_chain
;
1140 char *fullname
= NULL
;
1142 desc
= openp (source_path
, 0, pLoadFile
->name
, O_RDONLY
, 0, &fullname
);
1144 perror_with_name (pLoadFile
->name
);
1145 old_chain
= make_cleanup (close
, desc
);
1146 add_file_at_addr (fullname
, desc
, pLoadFile
->txt_addr
, pLoadFile
->data_addr
,
1147 pLoadFile
->bss_addr
);
1148 do_cleanups (old_chain
);
1151 /* FIXME: Is there something better to search than the PATH? (probably
1152 not the source path, since source might be in different directories
1155 if (catch_errors (add_symbol_stub
, (char *) pLoadFile
, (char *) 0,
1160 printf_filtered ("Done.\n");
1162 clnt_freeres (pClient
, xdr_ldtabl
, &loadTable
);
1164 /* Getting new symbols may change our opinion about what is
1167 reinit_frame_cache ();
1170 /* Takes a task started up outside of gdb and ``attaches'' to it.
1171 This stops it cold in its tracks and allows us to start tracing it. */
1174 vx_attach (char *args
, int from_tty
)
1179 Ptrace_return ptrace_out
;
1183 error_no_arg ("process-id to attach");
1185 pid
= strtoul (args
, &cptr
, 0);
1186 if ((cptr
== args
) || (*cptr
!= '\0'))
1187 error ("Invalid process-id -- give a single number in decimal or 0xhex");
1190 printf_unfiltered ("Attaching pid %s.\n",
1191 local_hex_string ((unsigned long) pid
));
1193 memset ((char *) &ptrace_in
, '\0', sizeof (ptrace_in
));
1194 memset ((char *) &ptrace_out
, '\0', sizeof (ptrace_out
));
1195 ptrace_in
.pid
= pid
;
1197 status
= net_ptrace_clnt_call (PTRACE_ATTACH
, &ptrace_in
, &ptrace_out
);
1200 if (ptrace_out
.status
== -1)
1202 errno
= ptrace_out
.errno_num
;
1203 perror_with_name ("Attaching remote process");
1209 push_target (&vx_run_ops
);
1216 /* detach_command --
1217 takes a program previously attached to and detaches it.
1218 The program resumes execution and will no longer stop
1219 on signals, etc. We better not have left any breakpoints
1220 in the program or it'll die when it hits one. For this
1221 to work, it may be necessary for the process to have been
1222 previously attached. It *might* work if the program was
1223 started via the normal ptrace (PTRACE_TRACEME). */
1226 vx_detach (char *args
, int from_tty
)
1229 Ptrace_return ptrace_out
;
1234 error ("Argument given to VxWorks \"detach\".");
1237 printf_unfiltered ("Detaching pid %s.\n",
1238 local_hex_string ((unsigned long) inferior_pid
));
1240 if (args
) /* FIXME, should be possible to leave suspended */
1241 signal
= atoi (args
);
1243 memset ((char *) &ptrace_in
, '\0', sizeof (ptrace_in
));
1244 memset ((char *) &ptrace_out
, '\0', sizeof (ptrace_out
));
1245 ptrace_in
.pid
= inferior_pid
;
1247 status
= net_ptrace_clnt_call (PTRACE_DETACH
, &ptrace_in
, &ptrace_out
);
1250 if (ptrace_out
.status
== -1)
1252 errno
= ptrace_out
.errno_num
;
1253 perror_with_name ("Detaching VxWorks process");
1257 pop_target (); /* go back to non-executing VxWorks connection */
1260 /* vx_kill -- takes a running task and wipes it out. */
1266 Ptrace_return ptrace_out
;
1269 printf_unfiltered ("Killing pid %s.\n", local_hex_string ((unsigned long) inferior_pid
));
1271 memset ((char *) &ptrace_in
, '\0', sizeof (ptrace_in
));
1272 memset ((char *) &ptrace_out
, '\0', sizeof (ptrace_out
));
1273 ptrace_in
.pid
= inferior_pid
;
1275 status
= net_ptrace_clnt_call (PTRACE_KILL
, &ptrace_in
, &ptrace_out
);
1278 else if (ptrace_out
.status
== -1)
1280 errno
= ptrace_out
.errno_num
;
1281 perror_with_name ("Killing VxWorks process");
1284 /* If it gives good status, the process is *gone*, no events remain.
1285 If the kill failed, assume the process is gone anyhow. */
1287 pop_target (); /* go back to non-executing VxWorks connection */
1290 /* Clean up from the VxWorks process target as it goes away. */
1293 vx_proc_close (int quitting
)
1295 inferior_pid
= 0; /* No longer have a process. */
1301 /* Make an RPC call to the VxWorks target.
1302 Returns RPC status. */
1304 static enum clnt_stat
1305 net_clnt_call (enum ptracereq procNum
, xdrproc_t inProc
, char *in
,
1306 xdrproc_t outProc
, char *out
)
1308 enum clnt_stat status
;
1310 status
= clnt_call (pClient
, procNum
, inProc
, in
, outProc
, out
, rpcTimeout
);
1312 if (status
!= RPC_SUCCESS
)
1313 clnt_perrno (status
);
1318 /* Clean up before losing control. */
1321 vx_close (int quitting
)
1324 clnt_destroy (pClient
); /* The net connection */
1328 xfree (vx_host
); /* The hostname */
1332 /* A vxprocess target should be started via "run" not "target". */
1335 vx_proc_open (char *name
, int from_tty
)
1337 error ("Use the \"run\" command to start a VxWorks process.");
1343 vx_ops
.to_shortname
= "vxworks";
1344 vx_ops
.to_longname
= "VxWorks target memory via RPC over TCP/IP";
1345 vx_ops
.to_doc
= "Use VxWorks target memory. \n\
1346 Specify the name of the machine to connect to.";
1347 vx_ops
.to_open
= vx_open
;
1348 vx_ops
.to_close
= vx_close
;
1349 vx_ops
.to_attach
= vx_attach
;
1350 vx_ops
.to_xfer_memory
= vx_xfer_memory
;
1351 vx_ops
.to_files_info
= vx_files_info
;
1352 vx_ops
.to_load
= vx_load_command
;
1353 vx_ops
.to_lookup_symbol
= vx_lookup_symbol
;
1354 vx_ops
.to_create_inferior
= vx_create_inferior
;
1355 vx_ops
.to_stratum
= core_stratum
;
1356 vx_ops
.to_has_all_memory
= 1;
1357 vx_ops
.to_has_memory
= 1;
1358 vx_ops
.to_magic
= OPS_MAGIC
; /* Always the last thing */
1362 init_vx_run_ops (void)
1364 vx_run_ops
.to_shortname
= "vxprocess";
1365 vx_run_ops
.to_longname
= "VxWorks process";
1366 vx_run_ops
.to_doc
= "VxWorks process; started by the \"run\" command.";
1367 vx_run_ops
.to_open
= vx_proc_open
;
1368 vx_run_ops
.to_close
= vx_proc_close
;
1369 vx_run_ops
.to_detach
= vx_detach
;
1370 vx_run_ops
.to_resume
= vx_resume
;
1371 vx_run_ops
.to_wait
= vx_wait
;
1372 vx_run_ops
.to_fetch_registers
= vx_read_register
;
1373 vx_run_ops
.to_store_registers
= vx_write_register
;
1374 vx_run_ops
.to_prepare_to_store
= vx_prepare_to_store
;
1375 vx_run_ops
.to_xfer_memory
= vx_xfer_memory
;
1376 vx_run_ops
.to_files_info
= vx_run_files_info
;
1377 vx_run_ops
.to_insert_breakpoint
= vx_insert_breakpoint
;
1378 vx_run_ops
.to_remove_breakpoint
= vx_remove_breakpoint
;
1379 vx_run_ops
.to_kill
= vx_kill
;
1380 vx_run_ops
.to_load
= vx_load_command
;
1381 vx_run_ops
.to_lookup_symbol
= vx_lookup_symbol
;
1382 vx_run_ops
.to_mourn_inferior
= vx_mourn_inferior
;
1383 vx_run_ops
.to_stratum
= process_stratum
;
1384 vx_run_ops
.to_has_memory
= 1;
1385 vx_run_ops
.to_has_stack
= 1;
1386 vx_run_ops
.to_has_registers
= 1;
1387 vx_run_ops
.to_has_execution
= 1;
1388 vx_run_ops
.to_magic
= OPS_MAGIC
;
1392 _initialize_vx (void)
1395 add_target (&vx_ops
);
1397 add_target (&vx_run_ops
);
1400 (add_set_cmd ("vxworks-timeout", class_support
, var_uinteger
,
1401 (char *) &rpcTimeout
.tv_sec
,
1402 "Set seconds to wait for rpc calls to return.\n\
1403 Set the number of seconds to wait for rpc calls to return.", &setlist
),