1 /* ICE interface for the NEC V850 for GDB, the GNU debugger.
2 Copyright 1996, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
26 #include "breakpoint.h"
36 #include <winuser.h> /* for WM_USER */
38 extern unsigned long int strtoul (const char *nptr
, char **endptr
,
41 /* Local data definitions */
44 int size
; /* length of input or output in bytes */
45 char *buf
; /* buffer having the input/output information */
48 /* Prototypes for functions located in other files */
49 extern void break_command (char *, int);
51 extern void stepi_command (char *, int);
53 extern void nexti_command (char *, int);
55 extern void continue_command (char *, int);
57 extern int (*ui_loop_hook
) (int);
59 /* Prototypes for local functions */
60 static int init_hidden_window (void);
62 static LRESULT CALLBACK
v850ice_wndproc (HWND
, UINT
, WPARAM
, LPARAM
);
64 static void v850ice_files_info (struct target_ops
*ignore
);
66 static int v850ice_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
67 int len
, int should_write
,
68 struct target_ops
*target
);
70 static void v850ice_prepare_to_store (void);
72 static void v850ice_fetch_registers (int regno
);
74 static void v850ice_resume (int pid
, int step
, enum target_signal siggnal
);
76 static void v850ice_open (char *name
, int from_tty
);
78 static void v850ice_close (int quitting
);
80 static void v850ice_stop (void);
82 static void v850ice_store_registers (int regno
);
84 static void v850ice_mourn (void);
86 static int v850ice_wait (int pid
, struct target_waitstatus
*status
);
88 static void v850ice_kill (void);
90 static void v850ice_detach (char *args
, int from_tty
);
92 static int v850ice_insert_breakpoint (CORE_ADDR
, char *);
94 static int v850ice_remove_breakpoint (CORE_ADDR
, char *);
96 static void v850ice_command (char *, int);
98 static int ice_disassemble (unsigned long, int, char *);
100 static int ice_lookup_addr (unsigned long *, char *, char *);
102 static int ice_lookup_symbol (unsigned long, char *);
104 static void ice_SimulateDisassemble (char *, int);
106 static void ice_SimulateAddrLookup (char *, int);
108 static void ice_Simulate_SymLookup (char *, int);
110 static void ice_fputs (const char *, struct ui_file
*);
112 static int ice_file (char *);
114 static int ice_cont (char *);
116 static int ice_stepi (char *);
118 static int ice_nexti (char *);
120 static void togdb_force_update (void);
122 static void view_source (CORE_ADDR
);
124 static void do_gdb (char *, char *, void (*func
) PARAMS ((char *, int)), int);
128 static HWND hidden_hwnd
; /* HWND for messages */
130 long (__stdcall
* ExeAppReq
) PARAMS ((char *, long, char *, struct MessageIO
*));
132 long (__stdcall
* RegisterClient
) PARAMS ((HWND
));
134 long (__stdcall
* UnregisterClient
) PARAMS ((void));
136 extern Tcl_Interp
*gdbtk_interp
;
138 /* Globals local to this file only */
139 static int ice_open
= 0; /* Is ICE open? */
141 static char *v850_CB_Result
; /* special char array for saving 'callback' results */
143 static int SimulateCallback
; /* simulate a callback event */
145 #define MAX_BLOCK_SIZE 64*1024 /* Cannot transfer memory in blocks bigger
147 /* MDI/ICE Message IDs */
148 #define GSINGLESTEP 0x200 /* single-step target */
149 #define GRESUME 0x201 /* resume target */
150 #define GREADREG 0x202 /* read a register */
151 #define GWRITEREG 0x203 /* write a register */
152 #define GWRITEBLOCK 0x204 /* write a block of memory */
153 #define GREADBLOCK 0x205 /* read a block of memory */
154 #define GSETBREAK 0x206 /* set a breakpoint */
155 #define GREMOVEBREAK 0x207 /* remove a breakpoint */
156 #define GHALT 0x208 /* ??? */
157 #define GCHECKSTATUS 0x209 /* check status of ICE */
158 #define GMDIREPLY 0x210 /* Reply for previous query - NOT USED */
159 #define GDOWNLOAD 0x211 /* something for MDI */
160 #define GCOMMAND 0x212 /* execute command in ice */
161 #define GLOADFILENAME 0x213 /* retrieve load filename */
162 #define GWRITEMEM 0x214 /* write word, half-word, or byte */
164 /* GCHECKSTATUS return codes: */
165 #define ICE_Idle 0x00
166 #define ICE_Breakpoint 0x01 /* hit a breakpoint */
167 #define ICE_Stepped 0x02 /* have stepped */
168 #define ICE_Exception 0x03 /* have exception */
169 #define ICE_Halted 0x04 /* hit a user halt */
170 #define ICE_Exited 0x05 /* called exit */
171 #define ICE_Terminated 0x06 /* user terminated */
172 #define ICE_Running 0x07
173 #define ICE_Unknown 0x99
175 /* Windows messages */
176 #define WM_STATE_CHANGE WM_USER+101
177 #define WM_SYM_TO_ADDR WM_USER+102
178 #define WM_ADDR_TO_SYM WM_USER+103
179 #define WM_DISASSEMBLY WM_USER+104
180 #define WM_SOURCE WM_USER+105
182 /* STATE_CHANGE codes */
183 #define STATE_CHANGE_REGS 1 /* Register(s) changed */
184 #define STATE_CHANGE_LOAD 2 /* HW reset */
185 #define STATE_CHANGE_RESET 3 /* Load new file */
186 #define STATE_CHANGE_CONT 4 /* Run target */
187 #define STATE_CHANGE_STOP 5 /* Stop target */
188 #define STATE_CHANGE_STEPI 6 /* Stepi target */
189 #define STATE_CHANGE_NEXTI 7 /* Nexti target */
191 static struct target_ops v850ice_ops
; /* Forward decl */
193 /* This function creates a hidden window */
195 init_hidden_window ()
199 if (hidden_hwnd
!= NULL
)
203 class.cbClsExtra
= 0;
204 class.cbWndExtra
= 0;
205 class.hInstance
= GetModuleHandle (0);
206 class.hbrBackground
= NULL
;
207 class.lpszMenuName
= NULL
;
208 class.lpszClassName
= "gdb_v850ice";
209 class.lpfnWndProc
= v850ice_wndproc
;
211 class.hCursor
= NULL
;
213 if (!RegisterClass (&class))
216 hidden_hwnd
= CreateWindow ("gdb_v850ice", "gdb_v850ice", WS_TILED
,
217 0, 0, 0, 0, NULL
, NULL
, class.hInstance
,
219 if (hidden_hwnd
== NULL
)
224 err
= GetLastError ();
225 FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
, NULL
, err
,
227 printf_unfiltered ("Could not create window: %s", buf
);
235 This function is installed as the message handler for the hidden window
236 which QBox will use to communicate with gdb. It recognize and acts
237 on the following messages:
240 WM_ADDR_TO_SYM | Not implemented at NEC's request
242 WM_STATE_CHANGE - tells us that a state change has occured in the ICE
244 static LRESULT CALLBACK
245 v850ice_wndproc (hwnd
, message
, wParam
, lParam
)
251 LRESULT result
= FALSE
;
256 MessageBox (0, "Symbol resolution\nNot implemented", "GDB", MB_OK
);
259 MessageBox (0, "Address resolution\nNot implemented", "GDB", MB_OK
);
262 view_source ((CORE_ADDR
) lParam
);
264 case WM_STATE_CHANGE
:
267 case STATE_CHANGE_LOAD
:
269 struct MessageIO iob
;
275 /* Load in a new file... Need filename */
276 ExeAppReq ("GDB", GLOADFILENAME
, NULL
, &iob
);
277 if (!catch_errors ((catch_errors_ftype
*) ice_file
, iob
.buf
, "", RETURN_MASK_ALL
))
278 printf_unfiltered ("load errored\n");
281 case STATE_CHANGE_RESET
:
282 registers_changed ();
283 flush_cached_frames ();
284 togdb_force_update ();
287 case STATE_CHANGE_REGS
:
288 registers_changed ();
289 togdb_force_update ();
292 case STATE_CHANGE_CONT
:
293 if (!catch_errors ((catch_errors_ftype
*) ice_cont
, NULL
, "", RETURN_MASK_ALL
))
294 printf_unfiltered ("continue errored\n");
297 case STATE_CHANGE_STEPI
:
298 if (!catch_errors ((catch_errors_ftype
*) ice_stepi
, (PTR
) (int) lParam
, "",
300 printf_unfiltered ("stepi errored\n");
303 case STATE_CHANGE_NEXTI
:
304 if (!catch_errors ((catch_errors_ftype
*) ice_nexti
, (PTR
) (int) lParam
, "",
306 printf_unfiltered ("nexti errored\n");
313 return DefWindowProc (hwnd
, message
, wParam
, lParam
);
318 /* Code for opening a connection to the ICE. */
321 v850ice_open (name
, from_tty
)
328 error ("Too many arguments.");
330 target_preopen (from_tty
);
332 unpush_target (&v850ice_ops
);
335 puts_filtered ("V850ice debugging\n");
337 push_target (&v850ice_ops
); /* Switch to using v850ice target now */
339 target_terminal_init ();
341 /* Initialize everything necessary to facilitate communication
342 between QBox, gdb, and the DLLs which control the ICE */
343 if (ExeAppReq
== NULL
)
345 handle
= LoadLibrary ("necmsg.dll");
347 error ("Cannot load necmsg.dll");
349 ExeAppReq
= (long (*)PARAMS ((char *, long, char *, struct MessageIO
*)))
350 GetProcAddress (handle
, "ExeAppReq");
351 RegisterClient
= (long (*)PARAMS ((HWND
)))
352 GetProcAddress (handle
, "RegisterClient");
353 UnregisterClient
= (long (*)PARAMS ((void)))
354 GetProcAddress (handle
, "UnregisterClient");
356 if (ExeAppReq
== NULL
|| RegisterClient
== NULL
|| UnregisterClient
== NULL
)
357 error ("Could not find requisite functions in necmsg.dll.");
359 if (!init_hidden_window ())
360 error ("could not initialize message handling");
363 /* Tell the DLL we are here */
364 RegisterClient (hidden_hwnd
);
368 /* Without this, some commands which require an active target (such as kill)
369 won't work. This variable serves (at least) double duty as both the pid
370 of the target process (if it has such), and as a flag indicating that a
371 target is active. These functions should be split out into seperate
372 variables, especially since GDB will someday have a notion of debugging
373 several processes. */
374 inferior_pid
= 42000;
380 /* Clean up connection to a remote debugger. */
384 v850ice_close (quitting
)
395 /* Stop the process on the ice. */
399 /* This is silly, but it works... */
400 v850ice_command ("stop", 0);
404 v850ice_detach (args
, from_tty
)
409 error ("Argument given to \"detach\" when remotely debugging.");
413 puts_filtered ("Ending v850ice debugging.\n");
416 /* Tell the remote machine to resume. */
419 v850ice_resume (pid
, step
, siggnal
)
421 enum target_signal siggnal
;
425 struct MessageIO iob
;
431 retval
= ExeAppReq ("GDB", GSINGLESTEP
, "step", &iob
);
433 retval
= ExeAppReq ("GDB", GRESUME
, "run", &iob
);
436 error ("ExeAppReq (step = %d) returned %d", step
, retval
);
439 /* Wait until the remote machine stops, then return,
440 storing status in STATUS just as `wait' would.
441 Returns "pid" (though it's not clear what, if anything, that
442 means in the case of this target). */
445 v850ice_wait (pid
, status
)
447 struct target_waitstatus
*status
;
451 struct MessageIO iob
;
460 if (count
++ % 100000)
466 v850_status
= ExeAppReq ("GDB", GCHECKSTATUS
, NULL
, &iob
);
474 status
->kind
= TARGET_WAITKIND_STOPPED
;
475 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
479 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
480 status
->value
.sig
= TARGET_SIGNAL_SEGV
;
484 status
->kind
= TARGET_WAITKIND_EXITED
;
485 status
->value
.integer
= 0;
489 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
490 status
->value
.sig
= TARGET_SIGNAL_KILL
;
503 convert_register (regno
, buf
)
508 sprintf (buf
, "r%d", regno
);
509 else if (REGISTER_NAME (regno
)[0] == 's'
510 && REGISTER_NAME (regno
)[1] == 'r')
513 sprintf (buf
, "%s", REGISTER_NAME (regno
));
518 /* Read the remote registers into the block REGS. */
519 /* Note that the ICE returns register contents as ascii hex strings. We have
520 to convert that to an unsigned long, and then call store_unsigned_integer to
521 convert it to target byte-order if necessary. */
524 v850ice_fetch_registers (regno
)
530 struct MessageIO iob
;
531 unsigned long regval
;
536 for (regno
= 0; regno
< NUM_REGS
; regno
++)
537 v850ice_fetch_registers (regno
);
541 strcpy (cmd
, "reg ");
542 if (!convert_register (regno
, &cmd
[4]))
545 iob
.size
= sizeof val
;
547 retval
= ExeAppReq ("GDB", GREADREG
, cmd
, &iob
);
549 error ("1: ExeAppReq returned %d: cmd = %s", retval
, cmd
);
551 regval
= strtoul (val
, NULL
, 16);
552 if (regval
== 0 && p
== val
)
553 error ("v850ice_fetch_registers (%d): bad value from ICE: %s.",
556 store_unsigned_integer (val
, REGISTER_RAW_SIZE (regno
), regval
);
557 supply_register (regno
, val
);
560 /* Store register REGNO, or all registers if REGNO == -1, from the contents
564 v850ice_store_registers (regno
)
569 unsigned long regval
;
571 struct MessageIO iob
;
577 for (regno
= 0; regno
< NUM_REGS
; regno
++)
578 v850ice_store_registers (regno
);
582 regval
= extract_unsigned_integer (®isters
[REGISTER_BYTE (regno
)],
583 REGISTER_RAW_SIZE (regno
));
584 strcpy (cmd
, "reg ");
585 if (!convert_register (regno
, &cmd
[4]))
587 sprintf (cmd
+ strlen (cmd
), "=0x%x", regval
);
589 retval
= ExeAppReq ("GDB", GWRITEREG
, cmd
, &iob
);
591 error ("2: ExeAppReq returned %d: cmd = %s", retval
, cmd
);
594 /* Prepare to store registers. Nothing to do here, since the ICE can write one
595 register at a time. */
598 v850ice_prepare_to_store ()
602 /* Read or write LEN bytes from inferior memory at MEMADDR, transferring
603 to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
604 nonzero. Returns length of data written or read; 0 for error.
606 We can only read/write MAX_BLOCK_SIZE bytes at a time, though, or the DLL
610 v850ice_xfer_memory (memaddr
, myaddr
, len
, should_write
, target
)
615 struct target_ops
*target
; /* ignored */
619 struct MessageIO iob
;
624 if (len
== 4 || len
== 2 || len
== 1)
638 value
|= (long) ((myaddr
[3] << 24) & 0xff000000);
639 value
|= (long) ((myaddr
[2] << 16) & 0x00ff0000);
640 value
|= (long) ((myaddr
[1] << 8) & 0x0000ff00);
641 value
|= (long) (myaddr
[0] & 0x000000ff);
645 value
|= (long) ((myaddr
[1] << 8) & 0xff00);
646 value
|= (long) (myaddr
[0] & 0x00ff);
650 value
|= (long) (myaddr
[0] & 0xff);
654 sprintf (cmd
, "memory %c c 0x%x=0x%x", c
, (int) memaddr
, value
);
655 retval
= ExeAppReq ("GDB", GWRITEMEM
, cmd
, &iob
);
664 iob
.size
= len
> MAX_BLOCK_SIZE
? MAX_BLOCK_SIZE
: len
;
666 sprintf (cmd
, "memory b c 0x%x=0x00 l=%d", (int) memaddr
, iob
.size
);
667 retval
= ExeAppReq ("GDB", GWRITEBLOCK
, cmd
, &iob
);
684 tmp
= alloca (len
+ 100);
686 memset (tmp
+ len
, 0xff, 100);
691 iob
.size
= len
> MAX_BLOCK_SIZE
? MAX_BLOCK_SIZE
: len
;
693 sprintf (cmd
, "memory b 0x%x l=%d", (int) memaddr
, iob
.size
);
694 retval
= ExeAppReq ("GDB", GREADBLOCK
, cmd
, &iob
);
706 for (i
= 0; i
< 100; i
++)
708 if (t
[sent
+ i
] != 0xff)
710 warning ("GREADBLOCK trashed bytes after transfer area.");
714 memcpy (myaddr
, t
, sent
);
719 error ("3: ExeAppReq returned %d: cmd = %s", retval
, cmd
);
725 v850ice_files_info (ignore
)
726 struct target_ops
*ignore
;
728 puts_filtered ("Debugging a target via the NEC V850 ICE.\n");
732 v850ice_insert_breakpoint (addr
, contents_cache
)
734 char *contents_cache
;
739 struct MessageIO iob
;
743 sprintf (cmd
, "%d, ", addr
);
745 retval
= ExeAppReq ("GDB", GSETBREAK
, cmd
, &iob
);
747 error ("ExeAppReq (GSETBREAK) returned %d: cmd = %s", retval
, cmd
);
753 v850ice_remove_breakpoint (addr
, contents_cache
)
755 char *contents_cache
;
760 struct MessageIO iob
;
765 sprintf (cmd
, "%d, ", addr
);
767 retval
= ExeAppReq ("GDB", GREMOVEBREAK
, cmd
, &iob
);
769 error ("ExeAppReq (GREMOVEBREAK) returned %d: cmd = %s", retval
, cmd
);
777 target_mourn_inferior ();
787 v850ice_load (filename
, from_tty
)
791 struct MessageIO iob
;
796 generic_load (filename
, from_tty
);
797 ExeAppReq ("GDB", GDOWNLOAD
, filename
, &iob
);
806 target_detach (NULL
, 0);
809 printf_unfiltered ("\n");
819 /* Safegaurd against confusing the breakpoint routines... */
820 delete_command (NULL
, 0);
822 /* Must supress from_tty, otherwise we could start asking if the
823 user really wants to load a new symbol table, etc... */
824 printf_unfiltered ("Reading symbols from %s...", arg
);
825 exec_file_command (arg
, 0);
826 symbol_file_command (arg
, 0);
827 printf_unfiltered ("done\n");
829 /* exec_file_command will kill our target, so reinstall the ICE as
831 v850ice_open (NULL
, 0);
833 togdb_force_update ();
841 printf_filtered ("continue (ice)\n");
842 ReplyMessage ((LRESULT
) 1);
844 if (gdbtk_interp
== NULL
)
846 continue_command (NULL
, 1);
849 Tcl_Eval (gdbtk_interp
, "gdb_immediate continue");
855 do_gdb (cmd
, str
, func
, count
)
858 void (*func
) (char *, int);
861 ReplyMessage ((LRESULT
) 1);
865 printf_unfiltered (str
);
867 if (gdbtk_interp
== NULL
)
872 Tcl_Eval (gdbtk_interp
, cmd
);
883 do_gdb ("gdb_immediate stepi", "stepi (ice)\n", stepi_command
, count
);
893 do_gdb ("gdb_immediate nexti", "nexti (ice)\n", nexti_command
, count
);
898 v850ice_command (arg
, from_tty
)
902 struct MessageIO iob
;
907 ExeAppReq ("GDB", GCOMMAND
, arg
, &iob
);
911 togdb_force_update (void)
913 if (gdbtk_interp
!= NULL
)
914 Tcl_Eval (gdbtk_interp
, "gdbtk_update");
923 if (gdbtk_interp
!= NULL
)
925 sprintf (c
, "catch {set src [lindex [ManagedWin::find SrcWin] 0]\n$src location BROWSE [gdb_loc *0x%x]}", addr
);
926 Tcl_Eval (gdbtk_interp
, c
);
930 /* Define the target subroutine names */
933 init_850ice_ops (void)
935 v850ice_ops
.to_shortname
= "ice";
936 v850ice_ops
.to_longname
= "NEC V850 ICE interface";
937 v850ice_ops
.to_doc
= "Debug a system controlled by a NEC 850 ICE.";
938 v850ice_ops
.to_open
= v850ice_open
;
939 v850ice_ops
.to_close
= v850ice_close
;
940 v850ice_ops
.to_attach
= NULL
;
941 v850ice_ops
.to_post_attach
= NULL
;
942 v850ice_ops
.to_require_attach
= NULL
;
943 v850ice_ops
.to_detach
= v850ice_detach
;
944 v850ice_ops
.to_require_detach
= NULL
;
945 v850ice_ops
.to_resume
= v850ice_resume
;
946 v850ice_ops
.to_wait
= v850ice_wait
;
947 v850ice_ops
.to_post_wait
= NULL
;
948 v850ice_ops
.to_fetch_registers
= v850ice_fetch_registers
;
949 v850ice_ops
.to_store_registers
= v850ice_store_registers
;
950 v850ice_ops
.to_prepare_to_store
= v850ice_prepare_to_store
;
951 v850ice_ops
.to_xfer_memory
= v850ice_xfer_memory
;
952 v850ice_ops
.to_files_info
= v850ice_files_info
;
953 v850ice_ops
.to_insert_breakpoint
= v850ice_insert_breakpoint
;
954 v850ice_ops
.to_remove_breakpoint
= v850ice_remove_breakpoint
;
955 v850ice_ops
.to_terminal_init
= NULL
;
956 v850ice_ops
.to_terminal_inferior
= NULL
;
957 v850ice_ops
.to_terminal_ours_for_output
= NULL
;
958 v850ice_ops
.to_terminal_ours
= NULL
;
959 v850ice_ops
.to_terminal_info
= NULL
;
960 v850ice_ops
.to_kill
= v850ice_kill
;
961 v850ice_ops
.to_load
= v850ice_load
;
962 v850ice_ops
.to_lookup_symbol
= NULL
;
963 v850ice_ops
.to_create_inferior
= NULL
;
964 v850ice_ops
.to_mourn_inferior
= v850ice_mourn
;
965 v850ice_ops
.to_can_run
= 0;
966 v850ice_ops
.to_notice_signals
= 0;
967 v850ice_ops
.to_thread_alive
= NULL
;
968 v850ice_ops
.to_stop
= v850ice_stop
;
969 v850ice_ops
.to_pid_to_exec_file
= NULL
;
970 v850ice_ops
.to_core_file_to_sym_file
= NULL
;
971 v850ice_ops
.to_stratum
= process_stratum
;
972 v850ice_ops
.DONT_USE
= NULL
;
973 v850ice_ops
.to_has_all_memory
= 1;
974 v850ice_ops
.to_has_memory
= 1;
975 v850ice_ops
.to_has_stack
= 1;
976 v850ice_ops
.to_has_registers
= 1;
977 v850ice_ops
.to_has_execution
= 1;
978 v850ice_ops
.to_sections
= NULL
;
979 v850ice_ops
.to_sections_end
= NULL
;
980 v850ice_ops
.to_magic
= OPS_MAGIC
;
984 _initialize_v850ice ()
987 add_target (&v850ice_ops
);
989 add_com ("ice", class_obscure
, v850ice_command
,
990 "Send command to ICE");