Commit | Line | Data |
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b4b4b794 KI |
1 | /* Remote debugging interface for M32R/SDI. |
2 | ||
6aba47ca | 3 | Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
b4b4b794 KI |
4 | |
5 | Contributed by Renesas Technology Co. | |
6 | Written by Kei Sakamoto <sakamoto.kei@renesas.com>. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
b4b4b794 KI |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b4b4b794 KI |
22 | |
23 | #include "defs.h" | |
24 | #include "gdbcmd.h" | |
25 | #include "gdbcore.h" | |
26 | #include "inferior.h" | |
27 | #include "target.h" | |
28 | #include "regcache.h" | |
29 | #include "gdb_string.h" | |
30 | #include <ctype.h> | |
31 | #include <signal.h> | |
cbba9205 KI |
32 | #ifdef __MINGW32__ |
33 | #include <winsock.h> | |
34 | #else | |
b4b4b794 | 35 | #include <netinet/in.h> |
cbba9205 | 36 | #endif |
b4b4b794 KI |
37 | #include <sys/types.h> |
38 | #include <sys/time.h> | |
39 | #include <signal.h> | |
40 | #include <time.h> | |
41 | ||
42 | ||
43 | #include "serial.h" | |
44 | ||
45 | /* Descriptor for I/O to remote machine. */ | |
46 | ||
47 | static struct serial *sdi_desc = NULL; | |
48 | ||
49 | #define SDI_TIMEOUT 30 | |
50 | ||
51 | ||
52 | #define SDIPORT 3232 | |
53 | ||
54 | static char chip_name[64]; | |
55 | ||
56 | static int step_mode; | |
57 | static unsigned long last_pc_addr = 0xffffffff; | |
58 | static unsigned char last_pc_addr_data[2]; | |
59 | ||
60 | static int mmu_on = 0; | |
61 | ||
62 | static int use_ib_breakpoints = 1; | |
63 | ||
64 | #define MAX_BREAKPOINTS 1024 | |
65 | static int max_ib_breakpoints; | |
66 | static unsigned long bp_address[MAX_BREAKPOINTS]; | |
67 | static unsigned char bp_data[MAX_BREAKPOINTS][4]; | |
b4b4b794 KI |
68 | |
69 | /* dbt -> nop */ | |
70 | static const unsigned char dbt_bp_entry[] = { | |
71 | 0x10, 0xe0, 0x70, 0x00 | |
72 | }; | |
73 | ||
74 | #define MAX_ACCESS_BREAKS 4 | |
75 | static int max_access_breaks; | |
76 | static unsigned long ab_address[MAX_ACCESS_BREAKS]; | |
77 | static unsigned int ab_type[MAX_ACCESS_BREAKS]; | |
78 | static unsigned int ab_size[MAX_ACCESS_BREAKS]; | |
79 | static CORE_ADDR hit_watchpoint_addr = 0; | |
80 | ||
81 | static int interrupted = 0; | |
82 | ||
83 | /* Forward data declarations */ | |
84 | extern struct target_ops m32r_ops; | |
85 | ||
86 | ||
87 | /* Commands */ | |
88 | #define SDI_OPEN 1 | |
89 | #define SDI_CLOSE 2 | |
90 | #define SDI_RELEASE 3 | |
91 | #define SDI_READ_CPU_REG 4 | |
92 | #define SDI_WRITE_CPU_REG 5 | |
93 | #define SDI_READ_MEMORY 6 | |
94 | #define SDI_WRITE_MEMORY 7 | |
95 | #define SDI_EXEC_CPU 8 | |
96 | #define SDI_STOP_CPU 9 | |
97 | #define SDI_WAIT_FOR_READY 10 | |
98 | #define SDI_GET_ATTR 11 | |
99 | #define SDI_SET_ATTR 12 | |
100 | #define SDI_STATUS 13 | |
101 | ||
102 | /* Attributes */ | |
103 | #define SDI_ATTR_NAME 1 | |
104 | #define SDI_ATTR_BRK 2 | |
105 | #define SDI_ATTR_ABRK 3 | |
106 | #define SDI_ATTR_CACHE 4 | |
107 | #define SDI_CACHE_TYPE_M32102 0 | |
108 | #define SDI_CACHE_TYPE_CHAOS 1 | |
109 | #define SDI_ATTR_MEM_ACCESS 5 | |
110 | #define SDI_MEM_ACCESS_DEBUG_DMA 0 | |
111 | #define SDI_MEM_ACCESS_MON_CODE 1 | |
112 | ||
113 | /* Registers */ | |
114 | #define SDI_REG_R0 0 | |
115 | #define SDI_REG_R1 1 | |
116 | #define SDI_REG_R2 2 | |
117 | #define SDI_REG_R3 3 | |
118 | #define SDI_REG_R4 4 | |
119 | #define SDI_REG_R5 5 | |
120 | #define SDI_REG_R6 6 | |
121 | #define SDI_REG_R7 7 | |
122 | #define SDI_REG_R8 8 | |
123 | #define SDI_REG_R9 9 | |
124 | #define SDI_REG_R10 10 | |
125 | #define SDI_REG_R11 11 | |
126 | #define SDI_REG_R12 12 | |
127 | #define SDI_REG_FP 13 | |
128 | #define SDI_REG_LR 14 | |
129 | #define SDI_REG_SP 15 | |
130 | #define SDI_REG_PSW 16 | |
131 | #define SDI_REG_CBR 17 | |
132 | #define SDI_REG_SPI 18 | |
133 | #define SDI_REG_SPU 19 | |
134 | #define SDI_REG_CR4 20 | |
135 | #define SDI_REG_EVB 21 | |
136 | #define SDI_REG_BPC 22 | |
137 | #define SDI_REG_CR7 23 | |
138 | #define SDI_REG_BBPSW 24 | |
139 | #define SDI_REG_CR9 25 | |
140 | #define SDI_REG_CR10 26 | |
141 | #define SDI_REG_CR11 27 | |
142 | #define SDI_REG_CR12 28 | |
143 | #define SDI_REG_WR 29 | |
144 | #define SDI_REG_BBPC 30 | |
145 | #define SDI_REG_PBP 31 | |
146 | #define SDI_REG_ACCH 32 | |
147 | #define SDI_REG_ACCL 33 | |
148 | #define SDI_REG_ACC1H 34 | |
149 | #define SDI_REG_ACC1L 35 | |
150 | ||
151 | ||
152 | /* Low level communication functions */ | |
153 | ||
154 | /* Check an ack packet from the target */ | |
155 | static int | |
156 | get_ack (void) | |
157 | { | |
158 | int c; | |
159 | ||
717eb1cf | 160 | if (!sdi_desc) |
b4b4b794 KI |
161 | return -1; |
162 | ||
163 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
164 | ||
165 | if (c < 0) | |
166 | return -1; | |
167 | ||
717eb1cf | 168 | if (c != '+') /* error */ |
b4b4b794 KI |
169 | return -1; |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | /* Send data to the target and check an ack packet */ | |
175 | static int | |
176 | send_data (void *buf, int len) | |
177 | { | |
178 | int ret; | |
179 | ||
717eb1cf | 180 | if (!sdi_desc) |
b4b4b794 KI |
181 | return -1; |
182 | ||
183 | if (serial_write (sdi_desc, buf, len) != 0) | |
184 | return -1; | |
185 | ||
186 | if (get_ack () == -1) | |
187 | return -1; | |
188 | ||
189 | return len; | |
190 | } | |
191 | ||
192 | /* Receive data from the target */ | |
193 | static int | |
194 | recv_data (void *buf, int len) | |
195 | { | |
196 | int total = 0; | |
197 | int c; | |
198 | ||
717eb1cf | 199 | if (!sdi_desc) |
b4b4b794 KI |
200 | return -1; |
201 | ||
202 | while (total < len) | |
203 | { | |
204 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
205 | ||
206 | if (c < 0) | |
207 | return -1; | |
208 | ||
209 | ((unsigned char *) buf)[total++] = c; | |
210 | } | |
211 | ||
212 | return len; | |
213 | } | |
214 | ||
215 | /* Store unsigned long parameter on packet */ | |
216 | static void | |
217 | store_long_parameter (void *buf, long val) | |
218 | { | |
219 | val = htonl (val); | |
220 | memcpy (buf, &val, 4); | |
221 | } | |
222 | ||
e22f895c KI |
223 | static int |
224 | send_cmd (unsigned char cmd) | |
225 | { | |
226 | unsigned char buf[1]; | |
227 | buf[0] = cmd; | |
228 | return send_data (buf, 1); | |
229 | } | |
230 | ||
231 | static int | |
232 | send_one_arg_cmd (unsigned char cmd, unsigned char arg1) | |
233 | { | |
234 | unsigned char buf[2]; | |
235 | buf[0] = cmd; | |
236 | buf[1] = arg1; | |
237 | return send_data (buf, 2); | |
238 | } | |
239 | ||
240 | static int | |
241 | send_two_arg_cmd (unsigned char cmd, unsigned char arg1, unsigned long arg2) | |
242 | { | |
243 | unsigned char buf[6]; | |
244 | buf[0] = cmd; | |
245 | buf[1] = arg1; | |
246 | store_long_parameter (buf + 2, arg2); | |
247 | return send_data (buf, 6); | |
248 | } | |
249 | ||
250 | static int | |
251 | send_three_arg_cmd (unsigned char cmd, unsigned long arg1, unsigned long arg2, | |
252 | unsigned long arg3) | |
253 | { | |
254 | unsigned char buf[13]; | |
255 | buf[0] = cmd; | |
256 | store_long_parameter (buf + 1, arg1); | |
257 | store_long_parameter (buf + 5, arg2); | |
258 | store_long_parameter (buf + 9, arg3); | |
259 | return send_data (buf, 13); | |
260 | } | |
261 | ||
262 | static unsigned char | |
263 | recv_char_data (void) | |
264 | { | |
265 | unsigned char val; | |
266 | recv_data (&val, 1); | |
267 | return val; | |
268 | } | |
269 | ||
270 | static unsigned long | |
271 | recv_long_data (void) | |
272 | { | |
273 | unsigned long val; | |
274 | recv_data (&val, 4); | |
275 | return ntohl (val); | |
276 | } | |
277 | ||
278 | ||
b4b4b794 KI |
279 | /* Check if MMU is on */ |
280 | static void | |
281 | check_mmu_status (void) | |
282 | { | |
283 | unsigned long val; | |
b4b4b794 KI |
284 | |
285 | /* Read PC address */ | |
e22f895c | 286 | if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC) == -1) |
b4b4b794 | 287 | return; |
e22f895c | 288 | val = recv_long_data (); |
b4b4b794 KI |
289 | if ((val & 0xc0000000) == 0x80000000) |
290 | { | |
291 | mmu_on = 1; | |
292 | return; | |
293 | } | |
294 | ||
295 | /* Read EVB address */ | |
e22f895c | 296 | if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_EVB) == -1) |
b4b4b794 | 297 | return; |
e22f895c | 298 | val = recv_long_data (); |
b4b4b794 KI |
299 | if ((val & 0xc0000000) == 0x80000000) |
300 | { | |
301 | mmu_on = 1; | |
302 | return; | |
303 | } | |
304 | ||
305 | mmu_on = 0; | |
306 | } | |
307 | ||
308 | ||
309 | /* This is called not only when we first attach, but also when the | |
310 | user types "run" after having attached. */ | |
311 | static void | |
717eb1cf | 312 | m32r_create_inferior (char *execfile, char *args, char **env, int from_tty) |
b4b4b794 KI |
313 | { |
314 | CORE_ADDR entry_pt; | |
315 | ||
316 | if (args && *args) | |
8a3fe4f8 | 317 | error (_("Cannot pass arguments to remote STDEBUG process")); |
b4b4b794 KI |
318 | |
319 | if (execfile == 0 || exec_bfd == 0) | |
8a3fe4f8 | 320 | error (_("No executable file specified")); |
b4b4b794 KI |
321 | |
322 | if (remote_debug) | |
323 | fprintf_unfiltered (gdb_stdlog, "m32r_create_inferior(%s,%s)\n", execfile, | |
324 | args); | |
325 | ||
326 | entry_pt = bfd_get_start_address (exec_bfd); | |
327 | ||
328 | /* The "process" (board) is already stopped awaiting our commands, and | |
329 | the program is already downloaded. We just set its PC and go. */ | |
330 | ||
331 | clear_proceed_status (); | |
332 | ||
333 | /* Tell wait_for_inferior that we've started a new process. */ | |
334 | init_wait_for_inferior (); | |
335 | ||
336 | /* Set up the "saved terminal modes" of the inferior | |
337 | based on what modes we are starting it with. */ | |
338 | target_terminal_init (); | |
339 | ||
340 | /* Install inferior's terminal modes. */ | |
341 | target_terminal_inferior (); | |
342 | ||
281b533b | 343 | write_pc (entry_pt); |
b4b4b794 KI |
344 | } |
345 | ||
346 | /* Open a connection to a remote debugger. | |
347 | NAME is the filename used for communication. */ | |
348 | ||
349 | static void | |
350 | m32r_open (char *args, int from_tty) | |
351 | { | |
352 | struct hostent *host_ent; | |
353 | struct sockaddr_in server_addr; | |
354 | char *port_str, hostname[256]; | |
355 | int port; | |
b4b4b794 KI |
356 | int i, n; |
357 | int yes = 1; | |
358 | ||
359 | if (remote_debug) | |
360 | fprintf_unfiltered (gdb_stdlog, "m32r_open(%d)\n", from_tty); | |
361 | ||
362 | target_preopen (from_tty); | |
363 | ||
364 | push_target (&m32r_ops); | |
365 | ||
366 | if (args == NULL) | |
367 | sprintf (hostname, "localhost:%d", SDIPORT); | |
368 | else | |
369 | { | |
370 | port_str = strchr (args, ':'); | |
371 | if (port_str == NULL) | |
717eb1cf | 372 | sprintf (hostname, "%s:%d", args, SDIPORT); |
b4b4b794 KI |
373 | else |
374 | strcpy (hostname, args); | |
375 | } | |
376 | ||
377 | sdi_desc = serial_open (hostname); | |
378 | if (!sdi_desc) | |
8a3fe4f8 | 379 | error (_("Connection refused.")); |
b4b4b794 KI |
380 | |
381 | if (get_ack () == -1) | |
8a3fe4f8 | 382 | error (_("Cannot connect to SDI target.")); |
b4b4b794 | 383 | |
e22f895c | 384 | if (send_cmd (SDI_OPEN) == -1) |
8a3fe4f8 | 385 | error (_("Cannot connect to SDI target.")); |
b4b4b794 KI |
386 | |
387 | /* Get maximum number of ib breakpoints */ | |
e22f895c KI |
388 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_BRK); |
389 | max_ib_breakpoints = recv_char_data (); | |
b4b4b794 KI |
390 | if (remote_debug) |
391 | printf_filtered ("Max IB Breakpoints = %d\n", max_ib_breakpoints); | |
392 | ||
393 | /* Initialize breakpoints. */ | |
394 | for (i = 0; i < MAX_BREAKPOINTS; i++) | |
395 | bp_address[i] = 0xffffffff; | |
396 | ||
397 | /* Get maximum number of access breaks. */ | |
e22f895c KI |
398 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_ABRK); |
399 | max_access_breaks = recv_char_data (); | |
b4b4b794 KI |
400 | if (remote_debug) |
401 | printf_filtered ("Max Access Breaks = %d\n", max_access_breaks); | |
402 | ||
403 | /* Initialize access breask. */ | |
404 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) | |
405 | ab_address[i] = 0x00000000; | |
406 | ||
407 | check_mmu_status (); | |
408 | ||
409 | /* Get the name of chip on target board. */ | |
e22f895c | 410 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_NAME); |
b4b4b794 KI |
411 | recv_data (chip_name, 64); |
412 | ||
413 | if (from_tty) | |
414 | printf_filtered ("Remote %s connected to %s\n", target_shortname, | |
415 | chip_name); | |
416 | } | |
417 | ||
418 | /* Close out all files and local state before this target loses control. */ | |
419 | ||
420 | static void | |
421 | m32r_close (int quitting) | |
422 | { | |
b4b4b794 KI |
423 | if (remote_debug) |
424 | fprintf_unfiltered (gdb_stdlog, "m32r_close(%d)\n", quitting); | |
425 | ||
426 | if (sdi_desc) | |
427 | { | |
e22f895c | 428 | send_cmd (SDI_CLOSE); |
b4b4b794 KI |
429 | serial_close (sdi_desc); |
430 | sdi_desc = NULL; | |
431 | } | |
432 | ||
433 | inferior_ptid = null_ptid; | |
434 | return; | |
435 | } | |
436 | ||
437 | /* Tell the remote machine to resume. */ | |
438 | ||
439 | static void | |
440 | m32r_resume (ptid_t ptid, int step, enum target_signal sig) | |
441 | { | |
442 | unsigned long pc_addr, bp_addr, ab_addr; | |
e22f895c | 443 | int ib_breakpoints; |
b4b4b794 KI |
444 | unsigned char buf[13]; |
445 | int i; | |
446 | ||
447 | if (remote_debug) | |
448 | { | |
449 | if (step) | |
450 | fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(step)\n"); | |
451 | else | |
452 | fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(cont)\n"); | |
453 | } | |
454 | ||
455 | check_mmu_status (); | |
456 | ||
457 | pc_addr = read_pc (); | |
458 | if (remote_debug) | |
459 | fprintf_unfiltered (gdb_stdlog, "pc <= 0x%lx\n", pc_addr); | |
460 | ||
461 | /* At pc address there is a parallel instruction with +2 offset, | |
462 | so we have to make it a serial instruction or avoid it. */ | |
463 | if (pc_addr == last_pc_addr) | |
464 | { | |
465 | /* Avoid a parallel nop. */ | |
466 | if (last_pc_addr_data[0] == 0xf0 && last_pc_addr_data[1] == 0x00) | |
467 | { | |
468 | pc_addr += 2; | |
469 | /* Now we can forget this instruction. */ | |
470 | last_pc_addr = 0xffffffff; | |
471 | } | |
472 | /* Clear a parallel bit. */ | |
473 | else | |
474 | { | |
475 | buf[0] = SDI_WRITE_MEMORY; | |
4c6b5505 | 476 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 KI |
477 | store_long_parameter (buf + 1, pc_addr); |
478 | else | |
479 | store_long_parameter (buf + 1, pc_addr - 1); | |
480 | store_long_parameter (buf + 5, 1); | |
481 | buf[9] = last_pc_addr_data[0] & 0x7f; | |
482 | send_data (buf, 10); | |
483 | } | |
484 | } | |
485 | ||
486 | /* Set PC. */ | |
e22f895c | 487 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr); |
b4b4b794 KI |
488 | |
489 | /* step mode. */ | |
490 | step_mode = step; | |
491 | if (step) | |
492 | { | |
493 | /* Set PBP. */ | |
e22f895c | 494 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, pc_addr | 1); |
b4b4b794 KI |
495 | } |
496 | else | |
497 | { | |
e22f895c KI |
498 | /* Unset PBP. */ |
499 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, 0x00000000); | |
500 | } | |
501 | ||
502 | if (use_ib_breakpoints) | |
503 | ib_breakpoints = max_ib_breakpoints; | |
504 | else | |
505 | ib_breakpoints = 0; | |
506 | ||
507 | /* Set ib breakpoints. */ | |
508 | for (i = 0; i < ib_breakpoints; i++) | |
509 | { | |
510 | bp_addr = bp_address[i]; | |
b4b4b794 | 511 | |
e22f895c KI |
512 | if (bp_addr == 0xffffffff) |
513 | continue; | |
514 | ||
515 | /* Set PBP. */ | |
4c6b5505 | 516 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
e22f895c KI |
517 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, |
518 | 0x00000006); | |
b4b4b794 | 519 | else |
e22f895c KI |
520 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, |
521 | 0x06000000); | |
522 | ||
523 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8080 + 4 * i, 4, bp_addr); | |
524 | } | |
525 | ||
526 | /* Set dbt breakpoints. */ | |
527 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) | |
528 | { | |
529 | bp_addr = bp_address[i]; | |
530 | ||
531 | if (bp_addr == 0xffffffff) | |
532 | continue; | |
533 | ||
534 | if (!mmu_on) | |
535 | bp_addr &= 0x7fffffff; | |
b4b4b794 | 536 | |
e22f895c KI |
537 | /* Write DBT instruction. */ |
538 | buf[0] = SDI_WRITE_MEMORY; | |
492e5c6b | 539 | store_long_parameter (buf + 1, (bp_addr & 0xfffffffc)); |
e22f895c KI |
540 | store_long_parameter (buf + 5, 4); |
541 | if ((bp_addr & 2) == 0 && bp_addr != (pc_addr & 0xfffffffc)) | |
b4b4b794 | 542 | { |
4c6b5505 | 543 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 | 544 | { |
e22f895c KI |
545 | buf[9] = dbt_bp_entry[0]; |
546 | buf[10] = dbt_bp_entry[1]; | |
547 | buf[11] = dbt_bp_entry[2]; | |
548 | buf[12] = dbt_bp_entry[3]; | |
549 | } | |
550 | else | |
551 | { | |
552 | buf[9] = dbt_bp_entry[3]; | |
553 | buf[10] = dbt_bp_entry[2]; | |
554 | buf[11] = dbt_bp_entry[1]; | |
555 | buf[12] = dbt_bp_entry[0]; | |
b4b4b794 KI |
556 | } |
557 | } | |
e22f895c | 558 | else |
b4b4b794 | 559 | { |
4c6b5505 | 560 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 | 561 | { |
e22f895c | 562 | if ((bp_addr & 2) == 0) |
b4b4b794 | 563 | { |
e22f895c KI |
564 | buf[9] = dbt_bp_entry[0]; |
565 | buf[10] = dbt_bp_entry[1]; | |
566 | buf[11] = bp_data[i][2] & 0x7f; | |
567 | buf[12] = bp_data[i][3]; | |
b4b4b794 KI |
568 | } |
569 | else | |
570 | { | |
e22f895c KI |
571 | buf[9] = bp_data[i][0]; |
572 | buf[10] = bp_data[i][1]; | |
573 | buf[11] = dbt_bp_entry[0]; | |
574 | buf[12] = dbt_bp_entry[1]; | |
b4b4b794 KI |
575 | } |
576 | } | |
e22f895c | 577 | else |
b4b4b794 | 578 | { |
e22f895c | 579 | if ((bp_addr & 2) == 0) |
b4b4b794 | 580 | { |
e22f895c KI |
581 | buf[9] = bp_data[i][0]; |
582 | buf[10] = bp_data[i][1] & 0x7f; | |
583 | buf[11] = dbt_bp_entry[1]; | |
584 | buf[12] = dbt_bp_entry[0]; | |
b4b4b794 KI |
585 | } |
586 | else | |
587 | { | |
e22f895c KI |
588 | buf[9] = dbt_bp_entry[1]; |
589 | buf[10] = dbt_bp_entry[0]; | |
590 | buf[11] = bp_data[i][2]; | |
591 | buf[12] = bp_data[i][3]; | |
b4b4b794 | 592 | } |
e22f895c KI |
593 | } |
594 | } | |
595 | send_data (buf, 13); | |
596 | } | |
b4b4b794 | 597 | |
e22f895c KI |
598 | /* Set access breaks. */ |
599 | for (i = 0; i < max_access_breaks; i++) | |
600 | { | |
601 | ab_addr = ab_address[i]; | |
b4b4b794 | 602 | |
e22f895c KI |
603 | if (ab_addr == 0x00000000) |
604 | continue; | |
b4b4b794 | 605 | |
e22f895c | 606 | /* DBC register */ |
4c6b5505 | 607 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
e22f895c KI |
608 | { |
609 | switch (ab_type[i]) | |
610 | { | |
611 | case 0: /* write watch */ | |
612 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
613 | 0x00000086); | |
614 | break; | |
615 | case 1: /* read watch */ | |
616 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
617 | 0x00000046); | |
618 | break; | |
619 | case 2: /* access watch */ | |
620 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
621 | 0x00000006); | |
622 | break; | |
623 | } | |
624 | } | |
625 | else | |
626 | { | |
627 | switch (ab_type[i]) | |
628 | { | |
629 | case 0: /* write watch */ | |
630 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
631 | 0x86000000); | |
632 | break; | |
633 | case 1: /* read watch */ | |
634 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
635 | 0x46000000); | |
636 | break; | |
637 | case 2: /* access watch */ | |
638 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, | |
639 | 0x06000000); | |
640 | break; | |
b4b4b794 KI |
641 | } |
642 | } | |
643 | ||
e22f895c KI |
644 | /* DBAH register */ |
645 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8180 + 4 * i, 4, ab_addr); | |
646 | ||
647 | /* DBAL register */ | |
648 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8200 + 4 * i, 4, | |
649 | 0xffffffff); | |
650 | ||
651 | /* DBD register */ | |
652 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8280 + 4 * i, 4, | |
653 | 0x00000000); | |
654 | ||
655 | /* DBDM register */ | |
656 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8300 + 4 * i, 4, | |
657 | 0x00000000); | |
b4b4b794 KI |
658 | } |
659 | ||
e22f895c KI |
660 | /* Resume program. */ |
661 | send_cmd (SDI_EXEC_CPU); | |
b4b4b794 KI |
662 | |
663 | /* Without this, some commands which require an active target (such as kill) | |
664 | won't work. This variable serves (at least) double duty as both the pid | |
665 | of the target process (if it has such), and as a flag indicating that a | |
666 | target is active. These functions should be split out into seperate | |
667 | variables, especially since GDB will someday have a notion of debugging | |
668 | several processes. */ | |
669 | inferior_ptid = pid_to_ptid (32); | |
670 | ||
671 | return; | |
672 | } | |
673 | ||
674 | /* Wait until the remote machine stops, then return, | |
675 | storing status in STATUS just as `wait' would. */ | |
676 | ||
677 | static void | |
678 | gdb_cntrl_c (int signo) | |
679 | { | |
680 | if (remote_debug) | |
681 | fprintf_unfiltered (gdb_stdlog, "interrupt\n"); | |
682 | interrupted = 1; | |
683 | } | |
684 | ||
685 | static ptid_t | |
686 | m32r_wait (ptid_t ptid, struct target_waitstatus *status) | |
687 | { | |
688 | static RETSIGTYPE (*prev_sigint) (); | |
689 | unsigned long bp_addr, pc_addr; | |
e22f895c | 690 | int ib_breakpoints; |
b4b4b794 KI |
691 | long i; |
692 | unsigned char buf[13]; | |
693 | unsigned long val; | |
694 | int ret, c; | |
695 | ||
696 | if (remote_debug) | |
697 | fprintf_unfiltered (gdb_stdlog, "m32r_wait()\n"); | |
698 | ||
699 | status->kind = TARGET_WAITKIND_EXITED; | |
700 | status->value.sig = 0; | |
701 | ||
702 | interrupted = 0; | |
703 | prev_sigint = signal (SIGINT, gdb_cntrl_c); | |
704 | ||
705 | /* Wait for ready */ | |
706 | buf[0] = SDI_WAIT_FOR_READY; | |
707 | if (serial_write (sdi_desc, buf, 1) != 0) | |
8a3fe4f8 | 708 | error (_("Remote connection closed")); |
b4b4b794 KI |
709 | |
710 | while (1) | |
711 | { | |
712 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
713 | if (c < 0) | |
8a3fe4f8 | 714 | error (_("Remote connection closed")); |
b4b4b794 | 715 | |
717eb1cf | 716 | if (c == '-') /* error */ |
b4b4b794 KI |
717 | { |
718 | status->kind = TARGET_WAITKIND_STOPPED; | |
719 | status->value.sig = TARGET_SIGNAL_HUP; | |
720 | return inferior_ptid; | |
721 | } | |
722 | else if (c == '+') /* stopped */ | |
723 | break; | |
724 | ||
725 | if (interrupted) | |
726 | ret = serial_write (sdi_desc, "!", 1); /* packet to interrupt */ | |
727 | else | |
728 | ret = serial_write (sdi_desc, ".", 1); /* packet to wait */ | |
729 | if (ret != 0) | |
8a3fe4f8 | 730 | error (_("Remote connection closed")); |
b4b4b794 KI |
731 | } |
732 | ||
733 | status->kind = TARGET_WAITKIND_STOPPED; | |
734 | if (interrupted) | |
735 | status->value.sig = TARGET_SIGNAL_INT; | |
736 | else | |
737 | status->value.sig = TARGET_SIGNAL_TRAP; | |
738 | ||
739 | interrupted = 0; | |
740 | signal (SIGINT, prev_sigint); | |
741 | ||
742 | check_mmu_status (); | |
743 | ||
744 | /* Recover parallel bit. */ | |
745 | if (last_pc_addr != 0xffffffff) | |
746 | { | |
747 | buf[0] = SDI_WRITE_MEMORY; | |
4c6b5505 | 748 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 KI |
749 | store_long_parameter (buf + 1, last_pc_addr); |
750 | else | |
751 | store_long_parameter (buf + 1, last_pc_addr - 1); | |
752 | store_long_parameter (buf + 5, 1); | |
753 | buf[9] = last_pc_addr_data[0]; | |
754 | send_data (buf, 10); | |
755 | last_pc_addr = 0xffffffff; | |
756 | } | |
757 | ||
e22f895c KI |
758 | if (use_ib_breakpoints) |
759 | ib_breakpoints = max_ib_breakpoints; | |
760 | else | |
761 | ib_breakpoints = 0; | |
b4b4b794 | 762 | |
e22f895c KI |
763 | /* Set back pc by 2 if m32r is stopped with dbt. */ |
764 | last_pc_addr = 0xffffffff; | |
765 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC); | |
766 | pc_addr = recv_long_data () - 2; | |
767 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) | |
768 | { | |
769 | if (pc_addr == bp_address[i]) | |
b4b4b794 | 770 | { |
e22f895c KI |
771 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr); |
772 | ||
773 | /* If there is a parallel instruction with +2 offset at pc | |
774 | address, we have to take care of it later. */ | |
775 | if ((pc_addr & 0x2) != 0) | |
b4b4b794 | 776 | { |
4c6b5505 | 777 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 | 778 | { |
e22f895c | 779 | if ((bp_data[i][2] & 0x80) != 0) |
b4b4b794 | 780 | { |
e22f895c KI |
781 | last_pc_addr = pc_addr; |
782 | last_pc_addr_data[0] = bp_data[i][2]; | |
783 | last_pc_addr_data[1] = bp_data[i][3]; | |
b4b4b794 | 784 | } |
e22f895c KI |
785 | } |
786 | else | |
787 | { | |
788 | if ((bp_data[i][1] & 0x80) != 0) | |
b4b4b794 | 789 | { |
e22f895c KI |
790 | last_pc_addr = pc_addr; |
791 | last_pc_addr_data[0] = bp_data[i][1]; | |
792 | last_pc_addr_data[1] = bp_data[i][0]; | |
b4b4b794 KI |
793 | } |
794 | } | |
b4b4b794 | 795 | } |
e22f895c | 796 | break; |
b4b4b794 | 797 | } |
e22f895c | 798 | } |
b4b4b794 | 799 | |
e22f895c KI |
800 | /* Remove ib breakpoints. */ |
801 | for (i = 0; i < ib_breakpoints; i++) | |
802 | { | |
803 | if (bp_address[i] != 0xffffffff) | |
804 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, | |
805 | 0x00000000); | |
806 | } | |
807 | /* Remove dbt breakpoints. */ | |
808 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) | |
809 | { | |
810 | bp_addr = bp_address[i]; | |
811 | if (bp_addr != 0xffffffff) | |
b4b4b794 | 812 | { |
e22f895c KI |
813 | if (!mmu_on) |
814 | bp_addr &= 0x7fffffff; | |
492e5c6b | 815 | buf[0] = SDI_WRITE_MEMORY; |
e22f895c KI |
816 | store_long_parameter (buf + 1, bp_addr & 0xfffffffc); |
817 | store_long_parameter (buf + 5, 4); | |
818 | buf[9] = bp_data[i][0]; | |
819 | buf[10] = bp_data[i][1]; | |
820 | buf[11] = bp_data[i][2]; | |
821 | buf[12] = bp_data[i][3]; | |
822 | send_data (buf, 13); | |
b4b4b794 | 823 | } |
e22f895c | 824 | } |
b4b4b794 | 825 | |
e22f895c KI |
826 | /* Remove access breaks. */ |
827 | hit_watchpoint_addr = 0; | |
828 | for (i = 0; i < max_access_breaks; i++) | |
829 | { | |
830 | if (ab_address[i] != 0x00000000) | |
b4b4b794 | 831 | { |
e22f895c KI |
832 | buf[0] = SDI_READ_MEMORY; |
833 | store_long_parameter (buf + 1, 0xffff8100 + 4 * i); | |
834 | store_long_parameter (buf + 5, 4); | |
835 | serial_write (sdi_desc, buf, 9); | |
836 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
837 | if (c != '-' && recv_data (buf, 4) != -1) | |
b4b4b794 | 838 | { |
4c6b5505 | 839 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
b4b4b794 | 840 | { |
e22f895c KI |
841 | if ((buf[3] & 0x1) == 0x1) |
842 | hit_watchpoint_addr = ab_address[i]; | |
843 | } | |
844 | else | |
845 | { | |
846 | if ((buf[0] & 0x1) == 0x1) | |
847 | hit_watchpoint_addr = ab_address[i]; | |
b4b4b794 | 848 | } |
b4b4b794 | 849 | } |
b4b4b794 | 850 | |
e22f895c KI |
851 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
852 | 0x00000000); | |
853 | } | |
b4b4b794 | 854 | } |
e22f895c KI |
855 | |
856 | if (remote_debug) | |
857 | fprintf_unfiltered (gdb_stdlog, "pc => 0x%lx\n", pc_addr); | |
b4b4b794 KI |
858 | |
859 | return inferior_ptid; | |
860 | } | |
861 | ||
862 | /* Terminate the open connection to the remote debugger. | |
863 | Use this when you want to detach and do something else | |
864 | with your gdb. */ | |
865 | static void | |
866 | m32r_detach (char *args, int from_tty) | |
867 | { | |
868 | if (remote_debug) | |
869 | fprintf_unfiltered (gdb_stdlog, "m32r_detach(%d)\n", from_tty); | |
870 | ||
871 | m32r_resume (inferior_ptid, 0, 0); | |
872 | ||
873 | /* calls m32r_close to do the real work */ | |
874 | pop_target (); | |
875 | if (from_tty) | |
876 | fprintf_unfiltered (gdb_stdlog, "Ending remote %s debugging\n", | |
877 | target_shortname); | |
878 | } | |
879 | ||
880 | /* Return the id of register number REGNO. */ | |
881 | ||
882 | static int | |
883 | get_reg_id (int regno) | |
884 | { | |
885 | switch (regno) | |
886 | { | |
887 | case 20: | |
888 | return SDI_REG_BBPC; | |
889 | case 21: | |
890 | return SDI_REG_BPC; | |
891 | case 22: | |
892 | return SDI_REG_ACCL; | |
893 | case 23: | |
894 | return SDI_REG_ACCH; | |
895 | case 24: | |
896 | return SDI_REG_EVB; | |
897 | } | |
898 | ||
899 | return regno; | |
900 | } | |
901 | ||
902 | /* Read the remote registers into the block REGS. */ | |
903 | ||
56be3814 | 904 | static void m32r_fetch_register (struct regcache *, int); |
b4b4b794 KI |
905 | |
906 | static void | |
56be3814 | 907 | m32r_fetch_registers (struct regcache *regcache) |
b4b4b794 KI |
908 | { |
909 | int regno; | |
910 | ||
f57d151a | 911 | for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++) |
56be3814 | 912 | m32r_fetch_register (regcache, regno); |
b4b4b794 KI |
913 | } |
914 | ||
915 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
916 | Returns errno value. */ | |
917 | static void | |
56be3814 | 918 | m32r_fetch_register (struct regcache *regcache, int regno) |
b4b4b794 KI |
919 | { |
920 | unsigned long val, val2, regid; | |
b4b4b794 KI |
921 | |
922 | if (regno == -1) | |
56be3814 | 923 | m32r_fetch_registers (regcache); |
b4b4b794 KI |
924 | else |
925 | { | |
926 | char buffer[MAX_REGISTER_SIZE]; | |
927 | ||
928 | regid = get_reg_id (regno); | |
e22f895c KI |
929 | send_one_arg_cmd (SDI_READ_CPU_REG, regid); |
930 | val = recv_long_data (); | |
b4b4b794 KI |
931 | |
932 | if (regid == SDI_REG_PSW) | |
933 | { | |
e22f895c KI |
934 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW); |
935 | val2 = recv_long_data (); | |
3e41d55f | 936 | val = ((0x00cf & val2) << 8) | ((0xcf00 & val) >> 8); |
b4b4b794 KI |
937 | } |
938 | ||
939 | if (remote_debug) | |
940 | fprintf_unfiltered (gdb_stdlog, "m32r_fetch_register(%d,0x%08lx)\n", | |
941 | regno, val); | |
942 | ||
943 | /* We got the number the register holds, but gdb expects to see a | |
944 | value in the target byte ordering. */ | |
945 | store_unsigned_integer (buffer, 4, val); | |
56be3814 | 946 | regcache_raw_supply (regcache, regno, buffer); |
b4b4b794 KI |
947 | } |
948 | return; | |
949 | } | |
950 | ||
951 | /* Store the remote registers from the contents of the block REGS. */ | |
952 | ||
56be3814 | 953 | static void m32r_store_register (struct regcache *, int); |
b4b4b794 KI |
954 | |
955 | static void | |
56be3814 | 956 | m32r_store_registers (struct regcache *regcache) |
b4b4b794 KI |
957 | { |
958 | int regno; | |
959 | ||
f57d151a | 960 | for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++) |
56be3814 | 961 | m32r_store_register (regcache, regno); |
b4b4b794 KI |
962 | |
963 | registers_changed (); | |
964 | } | |
965 | ||
966 | /* Store register REGNO, or all if REGNO == 0. | |
967 | Return errno value. */ | |
968 | static void | |
56be3814 | 969 | m32r_store_register (struct regcache *regcache, int regno) |
b4b4b794 KI |
970 | { |
971 | int regid; | |
972 | ULONGEST regval, tmp; | |
b4b4b794 KI |
973 | |
974 | if (regno == -1) | |
56be3814 | 975 | m32r_store_registers (regcache); |
b4b4b794 KI |
976 | else |
977 | { | |
56be3814 | 978 | regcache_cooked_read_unsigned (regcache, regno, ®val); |
b4b4b794 KI |
979 | regid = get_reg_id (regno); |
980 | ||
981 | if (regid == SDI_REG_PSW) | |
982 | { | |
983 | unsigned long psw, bbpsw; | |
984 | ||
e22f895c KI |
985 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_PSW); |
986 | psw = recv_long_data (); | |
b4b4b794 | 987 | |
e22f895c KI |
988 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW); |
989 | bbpsw = recv_long_data (); | |
b4b4b794 | 990 | |
3e41d55f | 991 | tmp = (0x00cf & psw) | ((0x00cf & regval) << 8); |
e22f895c | 992 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PSW, tmp); |
b4b4b794 | 993 | |
3e41d55f | 994 | tmp = (0x0030 & bbpsw) | ((0xcf00 & regval) >> 8); |
e22f895c | 995 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BBPSW, tmp); |
b4b4b794 KI |
996 | } |
997 | else | |
998 | { | |
e22f895c | 999 | send_two_arg_cmd (SDI_WRITE_CPU_REG, regid, regval); |
b4b4b794 KI |
1000 | } |
1001 | ||
1002 | if (remote_debug) | |
1003 | fprintf_unfiltered (gdb_stdlog, "m32r_store_register(%d,0x%08lu)\n", | |
1004 | regno, (unsigned long) regval); | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /* Get ready to modify the registers array. On machines which store | |
1009 | individual registers, this doesn't need to do anything. On machines | |
1010 | which store all the registers in one fell swoop, this makes sure | |
1011 | that registers contains all the registers from the program being | |
1012 | debugged. */ | |
1013 | ||
1014 | static void | |
316f2060 | 1015 | m32r_prepare_to_store (struct regcache *regcache) |
b4b4b794 KI |
1016 | { |
1017 | /* Do nothing, since we can store individual regs */ | |
1018 | if (remote_debug) | |
1019 | fprintf_unfiltered (gdb_stdlog, "m32r_prepare_to_store()\n"); | |
1020 | } | |
1021 | ||
1022 | static void | |
1023 | m32r_files_info (struct target_ops *target) | |
1024 | { | |
1025 | char *file = "nothing"; | |
1026 | ||
1027 | if (exec_bfd) | |
1028 | { | |
1029 | file = bfd_get_filename (exec_bfd); | |
1030 | printf_filtered ("\tAttached to %s running program %s\n", | |
1031 | chip_name, file); | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* Read/Write memory. */ | |
1036 | static int | |
16ac4ab5 | 1037 | m32r_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
b4b4b794 KI |
1038 | int write, |
1039 | struct mem_attrib *attrib, struct target_ops *target) | |
1040 | { | |
1041 | unsigned long taddr; | |
1042 | unsigned char buf[0x2000]; | |
1043 | int ret, c; | |
1044 | ||
1045 | taddr = memaddr; | |
1046 | ||
1047 | if (!mmu_on) | |
1048 | { | |
1049 | if ((taddr & 0xa0000000) == 0x80000000) | |
1050 | taddr &= 0x7fffffff; | |
1051 | } | |
1052 | ||
1053 | if (remote_debug) | |
1054 | { | |
1055 | if (write) | |
1056 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%08lx,%d,write)\n", | |
1057 | memaddr, len); | |
1058 | else | |
1059 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%08lx,%d,read)\n", | |
1060 | memaddr, len); | |
1061 | } | |
1062 | ||
1063 | if (write) | |
1064 | { | |
1065 | buf[0] = SDI_WRITE_MEMORY; | |
1066 | store_long_parameter (buf + 1, taddr); | |
1067 | store_long_parameter (buf + 5, len); | |
1068 | if (len < 0x1000) | |
1069 | { | |
1070 | memcpy (buf + 9, myaddr, len); | |
1071 | ret = send_data (buf, len + 9) - 9; | |
1072 | } | |
1073 | else | |
1074 | { | |
1075 | if (serial_write (sdi_desc, buf, 9) != 0) | |
1076 | { | |
1077 | if (remote_debug) | |
1078 | fprintf_unfiltered (gdb_stdlog, | |
1079 | "m32r_xfer_memory() failed\n"); | |
1080 | return 0; | |
1081 | } | |
1082 | ret = send_data (myaddr, len); | |
1083 | } | |
1084 | } | |
1085 | else | |
1086 | { | |
1087 | buf[0] = SDI_READ_MEMORY; | |
1088 | store_long_parameter (buf + 1, taddr); | |
1089 | store_long_parameter (buf + 5, len); | |
1090 | if (serial_write (sdi_desc, buf, 9) != 0) | |
1091 | { | |
1092 | if (remote_debug) | |
1093 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n"); | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
1098 | if (c < 0 || c == '-') | |
1099 | { | |
1100 | if (remote_debug) | |
1101 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n"); | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | ret = recv_data (myaddr, len); | |
1106 | } | |
1107 | ||
1108 | if (ret <= 0) | |
1109 | { | |
1110 | if (remote_debug) | |
1111 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() fails\n"); | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | return ret; | |
1116 | } | |
1117 | ||
1118 | static void | |
1119 | m32r_kill (void) | |
1120 | { | |
1121 | if (remote_debug) | |
1122 | fprintf_unfiltered (gdb_stdlog, "m32r_kill()\n"); | |
1123 | ||
1124 | inferior_ptid = null_ptid; | |
1125 | ||
1126 | return; | |
1127 | } | |
1128 | ||
1129 | /* Clean up when a program exits. | |
1130 | ||
1131 | The program actually lives on in the remote processor's RAM, and may be | |
1132 | run again without a download. Don't leave it full of breakpoint | |
1133 | instructions. */ | |
1134 | ||
1135 | static void | |
1136 | m32r_mourn_inferior (void) | |
1137 | { | |
1138 | if (remote_debug) | |
1139 | fprintf_unfiltered (gdb_stdlog, "m32r_mourn_inferior()\n"); | |
1140 | ||
1141 | remove_breakpoints (); | |
1142 | generic_mourn_inferior (); | |
1143 | } | |
1144 | ||
1145 | static int | |
8181d85f | 1146 | m32r_insert_breakpoint (struct bp_target_info *bp_tgt) |
b4b4b794 | 1147 | { |
8181d85f | 1148 | CORE_ADDR addr = bp_tgt->placed_address; |
b4b4b794 KI |
1149 | int ib_breakpoints; |
1150 | unsigned char buf[13]; | |
1151 | int i, c; | |
1152 | ||
1153 | if (remote_debug) | |
8181d85f DJ |
1154 | fprintf_unfiltered (gdb_stdlog, "m32r_insert_breakpoint(%08lx,...)\n", |
1155 | addr); | |
b4b4b794 KI |
1156 | |
1157 | if (use_ib_breakpoints) | |
1158 | ib_breakpoints = max_ib_breakpoints; | |
1159 | else | |
1160 | ib_breakpoints = 0; | |
1161 | ||
1162 | for (i = 0; i < MAX_BREAKPOINTS; i++) | |
1163 | { | |
1164 | if (bp_address[i] == 0xffffffff) | |
1165 | { | |
1166 | bp_address[i] = addr; | |
1167 | if (i >= ib_breakpoints) | |
1168 | { | |
1169 | buf[0] = SDI_READ_MEMORY; | |
1170 | if (mmu_on) | |
1171 | store_long_parameter (buf + 1, addr & 0xfffffffc); | |
1172 | else | |
1173 | store_long_parameter (buf + 1, addr & 0x7ffffffc); | |
1174 | store_long_parameter (buf + 5, 4); | |
1175 | serial_write (sdi_desc, buf, 9); | |
1176 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
1177 | if (c != '-') | |
1178 | recv_data (bp_data[i], 4); | |
1179 | } | |
1180 | return 0; | |
1181 | } | |
1182 | } | |
1183 | ||
8a3fe4f8 | 1184 | error (_("Too many breakpoints")); |
b4b4b794 KI |
1185 | return 1; |
1186 | } | |
1187 | ||
1188 | static int | |
8181d85f | 1189 | m32r_remove_breakpoint (struct bp_target_info *bp_tgt) |
b4b4b794 | 1190 | { |
8181d85f | 1191 | CORE_ADDR addr = bp_tgt->placed_address; |
b4b4b794 KI |
1192 | int i; |
1193 | ||
1194 | if (remote_debug) | |
8181d85f DJ |
1195 | fprintf_unfiltered (gdb_stdlog, "m32r_remove_breakpoint(%08lx)\n", |
1196 | addr); | |
b4b4b794 KI |
1197 | |
1198 | for (i = 0; i < MAX_BREAKPOINTS; i++) | |
1199 | { | |
1200 | if (bp_address[i] == addr) | |
1201 | { | |
1202 | bp_address[i] = 0xffffffff; | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | static void | |
1211 | m32r_load (char *args, int from_tty) | |
1212 | { | |
1213 | struct cleanup *old_chain; | |
1214 | asection *section; | |
1215 | bfd *pbfd; | |
1216 | bfd_vma entry; | |
1217 | char *filename; | |
1218 | int quiet; | |
1219 | int nostart; | |
2b71414d | 1220 | struct timeval start_time, end_time; |
b4b4b794 KI |
1221 | unsigned long data_count; /* Number of bytes transferred to memory */ |
1222 | int ret; | |
1223 | static RETSIGTYPE (*prev_sigint) (); | |
1224 | ||
1225 | /* for direct tcp connections, we can do a fast binary download */ | |
1226 | quiet = 0; | |
1227 | nostart = 0; | |
1228 | filename = NULL; | |
1229 | ||
1230 | while (*args != '\000') | |
1231 | { | |
1232 | char *arg; | |
1233 | ||
1234 | while (isspace (*args)) | |
1235 | args++; | |
1236 | ||
1237 | arg = args; | |
1238 | ||
1239 | while ((*args != '\000') && !isspace (*args)) | |
1240 | args++; | |
1241 | ||
1242 | if (*args != '\000') | |
1243 | *args++ = '\000'; | |
1244 | ||
1245 | if (*arg != '-') | |
1246 | filename = arg; | |
1247 | else if (strncmp (arg, "-quiet", strlen (arg)) == 0) | |
1248 | quiet = 1; | |
1249 | else if (strncmp (arg, "-nostart", strlen (arg)) == 0) | |
1250 | nostart = 1; | |
1251 | else | |
8a3fe4f8 | 1252 | error (_("Unknown option `%s'"), arg); |
b4b4b794 KI |
1253 | } |
1254 | ||
1255 | if (!filename) | |
1256 | filename = get_exec_file (1); | |
1257 | ||
1258 | pbfd = bfd_openr (filename, gnutarget); | |
1259 | if (pbfd == NULL) | |
1260 | { | |
1261 | perror_with_name (filename); | |
1262 | return; | |
1263 | } | |
1264 | old_chain = make_cleanup_bfd_close (pbfd); | |
1265 | ||
1266 | if (!bfd_check_format (pbfd, bfd_object)) | |
8a3fe4f8 | 1267 | error (_("\"%s\" is not an object file: %s"), filename, |
b4b4b794 KI |
1268 | bfd_errmsg (bfd_get_error ())); |
1269 | ||
2b71414d | 1270 | gettimeofday (&start_time, NULL); |
b4b4b794 KI |
1271 | data_count = 0; |
1272 | ||
1273 | interrupted = 0; | |
1274 | prev_sigint = signal (SIGINT, gdb_cntrl_c); | |
1275 | ||
1276 | for (section = pbfd->sections; section; section = section->next) | |
1277 | { | |
1278 | if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) | |
1279 | { | |
1280 | bfd_vma section_address; | |
1281 | bfd_size_type section_size; | |
1282 | file_ptr fptr; | |
1283 | int n; | |
1284 | ||
1285 | section_address = bfd_section_lma (pbfd, section); | |
2c500098 | 1286 | section_size = bfd_get_section_size (section); |
b4b4b794 KI |
1287 | |
1288 | if (!mmu_on) | |
1289 | { | |
1290 | if ((section_address & 0xa0000000) == 0x80000000) | |
1291 | section_address &= 0x7fffffff; | |
1292 | } | |
1293 | ||
1294 | if (!quiet) | |
1295 | printf_filtered ("[Loading section %s at 0x%lx (%d bytes)]\n", | |
1296 | bfd_get_section_name (pbfd, section), | |
1297 | section_address, (int) section_size); | |
1298 | ||
1299 | fptr = 0; | |
1300 | ||
1301 | data_count += section_size; | |
1302 | ||
1303 | n = 0; | |
1304 | while (section_size > 0) | |
1305 | { | |
1306 | char unsigned buf[0x1000 + 9]; | |
1307 | int count; | |
1308 | ||
1309 | count = min (section_size, 0x1000); | |
1310 | ||
1311 | buf[0] = SDI_WRITE_MEMORY; | |
1312 | store_long_parameter (buf + 1, section_address); | |
1313 | store_long_parameter (buf + 5, count); | |
1314 | ||
1315 | bfd_get_section_contents (pbfd, section, buf + 9, fptr, count); | |
1316 | if (send_data (buf, count + 9) <= 0) | |
8a3fe4f8 | 1317 | error (_("Error while downloading %s section."), |
b4b4b794 KI |
1318 | bfd_get_section_name (pbfd, section)); |
1319 | ||
1320 | if (!quiet) | |
1321 | { | |
1322 | printf_unfiltered ("."); | |
1323 | if (n++ > 60) | |
1324 | { | |
1325 | printf_unfiltered ("\n"); | |
1326 | n = 0; | |
1327 | } | |
1328 | gdb_flush (gdb_stdout); | |
1329 | } | |
1330 | ||
1331 | section_address += count; | |
1332 | fptr += count; | |
1333 | section_size -= count; | |
1334 | ||
1335 | if (interrupted) | |
1336 | break; | |
1337 | } | |
1338 | ||
1339 | if (!quiet && !interrupted) | |
1340 | { | |
1341 | printf_unfiltered ("done.\n"); | |
1342 | gdb_flush (gdb_stdout); | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | if (interrupted) | |
1347 | { | |
1348 | printf_unfiltered ("Interrupted.\n"); | |
1349 | break; | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | interrupted = 0; | |
1354 | signal (SIGINT, prev_sigint); | |
1355 | ||
2b71414d | 1356 | gettimeofday (&end_time, NULL); |
b4b4b794 KI |
1357 | |
1358 | /* Make the PC point at the start address */ | |
1359 | if (exec_bfd) | |
1360 | write_pc (bfd_get_start_address (exec_bfd)); | |
1361 | ||
1362 | inferior_ptid = null_ptid; /* No process now */ | |
1363 | ||
1364 | /* This is necessary because many things were based on the PC at the time | |
1365 | that we attached to the monitor, which is no longer valid now that we | |
1366 | have loaded new code (and just changed the PC). Another way to do this | |
1367 | might be to call normal_stop, except that the stack may not be valid, | |
1368 | and things would get horribly confused... */ | |
1369 | ||
1370 | clear_symtab_users (); | |
1371 | ||
1372 | if (!nostart) | |
1373 | { | |
1374 | entry = bfd_get_start_address (pbfd); | |
1375 | ||
1376 | if (!quiet) | |
1377 | printf_unfiltered ("[Starting %s at 0x%lx]\n", filename, entry); | |
1378 | } | |
1379 | ||
2b71414d DJ |
1380 | print_transfer_performance (gdb_stdout, data_count, 0, &start_time, |
1381 | &end_time); | |
b4b4b794 KI |
1382 | |
1383 | do_cleanups (old_chain); | |
1384 | } | |
1385 | ||
1386 | static void | |
1387 | m32r_stop (void) | |
1388 | { | |
b4b4b794 KI |
1389 | if (remote_debug) |
1390 | fprintf_unfiltered (gdb_stdlog, "m32r_stop()\n"); | |
1391 | ||
e22f895c | 1392 | send_cmd (SDI_STOP_CPU); |
b4b4b794 KI |
1393 | |
1394 | return; | |
1395 | } | |
1396 | ||
1397 | ||
37814c18 KI |
1398 | /* Tell whether this target can support a hardware breakpoint. CNT |
1399 | is the number of hardware breakpoints already installed. This | |
1400 | implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro. */ | |
b4b4b794 KI |
1401 | |
1402 | int | |
37814c18 | 1403 | m32r_can_use_hw_watchpoint (int type, int cnt, int othertype) |
b4b4b794 | 1404 | { |
37814c18 | 1405 | return sdi_desc != NULL && cnt < max_access_breaks; |
b4b4b794 KI |
1406 | } |
1407 | ||
1408 | /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0 | |
1409 | for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write | |
1410 | watchpoint. */ | |
1411 | ||
1412 | int | |
37814c18 | 1413 | m32r_insert_watchpoint (CORE_ADDR addr, int len, int type) |
b4b4b794 KI |
1414 | { |
1415 | int i; | |
1416 | ||
1417 | if (remote_debug) | |
37814c18 | 1418 | fprintf_unfiltered (gdb_stdlog, "m32r_insert_watchpoint(%08lx,%d,%d)\n", |
b4b4b794 KI |
1419 | addr, len, type); |
1420 | ||
1421 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) | |
1422 | { | |
1423 | if (ab_address[i] == 0x00000000) | |
1424 | { | |
1425 | ab_address[i] = addr; | |
1426 | ab_size[i] = len; | |
1427 | ab_type[i] = type; | |
1428 | return 0; | |
1429 | } | |
1430 | } | |
1431 | ||
8a3fe4f8 | 1432 | error (_("Too many watchpoints")); |
b4b4b794 KI |
1433 | return 1; |
1434 | } | |
1435 | ||
1436 | int | |
1437 | m32r_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
1438 | { | |
1439 | int i; | |
1440 | ||
1441 | if (remote_debug) | |
1442 | fprintf_unfiltered (gdb_stdlog, "m32r_remove_watchpoint(%08lx,%d,%d)\n", | |
1443 | addr, len, type); | |
1444 | ||
1445 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) | |
1446 | { | |
1447 | if (ab_address[i] == addr) | |
1448 | { | |
1449 | ab_address[i] = 0x00000000; | |
1450 | break; | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
4aa7a7f5 JJ |
1457 | int |
1458 | m32r_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
b4b4b794 | 1459 | { |
4aa7a7f5 JJ |
1460 | int rc = 0; |
1461 | if (hit_watchpoint_addr != 0x00000000) | |
1462 | { | |
1463 | *addr_p = hit_watchpoint_addr; | |
1464 | rc = 1; | |
1465 | } | |
1466 | return rc; | |
b4b4b794 KI |
1467 | } |
1468 | ||
1469 | int | |
1470 | m32r_stopped_by_watchpoint (void) | |
1471 | { | |
4aa7a7f5 JJ |
1472 | CORE_ADDR addr; |
1473 | return m32r_stopped_data_address (¤t_target, &addr); | |
b4b4b794 KI |
1474 | } |
1475 | ||
1476 | ||
1477 | static void | |
1478 | sdireset_command (char *args, int from_tty) | |
1479 | { | |
b4b4b794 KI |
1480 | if (remote_debug) |
1481 | fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n"); | |
1482 | ||
e22f895c | 1483 | send_cmd (SDI_OPEN); |
b4b4b794 KI |
1484 | |
1485 | inferior_ptid = null_ptid; | |
1486 | } | |
1487 | ||
1488 | ||
1489 | static void | |
1490 | sdistatus_command (char *args, int from_tty) | |
1491 | { | |
1492 | unsigned char buf[4096]; | |
1493 | int i, c; | |
1494 | ||
1495 | if (remote_debug) | |
1496 | fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n"); | |
1497 | ||
1498 | if (!sdi_desc) | |
1499 | return; | |
1500 | ||
e22f895c | 1501 | send_cmd (SDI_STATUS); |
b4b4b794 KI |
1502 | for (i = 0; i < 4096; i++) |
1503 | { | |
1504 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); | |
1505 | if (c < 0) | |
717eb1cf | 1506 | return; |
b4b4b794 KI |
1507 | buf[i] = c; |
1508 | if (c == 0) | |
717eb1cf AC |
1509 | break; |
1510 | } | |
b4b4b794 KI |
1511 | |
1512 | printf_filtered ("%s", buf); | |
1513 | } | |
1514 | ||
1515 | ||
1516 | static void | |
1517 | debug_chaos_command (char *args, int from_tty) | |
1518 | { | |
1519 | unsigned char buf[3]; | |
1520 | ||
1521 | buf[0] = SDI_SET_ATTR; | |
1522 | buf[1] = SDI_ATTR_CACHE; | |
1523 | buf[2] = SDI_CACHE_TYPE_CHAOS; | |
1524 | send_data (buf, 3); | |
1525 | } | |
1526 | ||
1527 | ||
1528 | static void | |
1529 | use_debug_dma_command (char *args, int from_tty) | |
1530 | { | |
1531 | unsigned char buf[3]; | |
1532 | ||
1533 | buf[0] = SDI_SET_ATTR; | |
1534 | buf[1] = SDI_ATTR_MEM_ACCESS; | |
1535 | buf[2] = SDI_MEM_ACCESS_DEBUG_DMA; | |
1536 | send_data (buf, 3); | |
1537 | } | |
1538 | ||
1539 | static void | |
1540 | use_mon_code_command (char *args, int from_tty) | |
1541 | { | |
1542 | unsigned char buf[3]; | |
1543 | ||
1544 | buf[0] = SDI_SET_ATTR; | |
1545 | buf[1] = SDI_ATTR_MEM_ACCESS; | |
1546 | buf[2] = SDI_MEM_ACCESS_MON_CODE; | |
1547 | send_data (buf, 3); | |
1548 | } | |
1549 | ||
1550 | ||
1551 | static void | |
1552 | use_ib_breakpoints_command (char *args, int from_tty) | |
1553 | { | |
1554 | use_ib_breakpoints = 1; | |
1555 | } | |
1556 | ||
1557 | static void | |
1558 | use_dbt_breakpoints_command (char *args, int from_tty) | |
1559 | { | |
1560 | use_ib_breakpoints = 0; | |
1561 | } | |
1562 | ||
1563 | ||
1564 | /* Define the target subroutine names */ | |
1565 | ||
1566 | struct target_ops m32r_ops; | |
1567 | ||
1568 | static void | |
1569 | init_m32r_ops (void) | |
1570 | { | |
1571 | m32r_ops.to_shortname = "m32rsdi"; | |
1572 | m32r_ops.to_longname = "Remote M32R debugging over SDI interface"; | |
1573 | m32r_ops.to_doc = "Use an M32R board using SDI debugging protocol."; | |
1574 | m32r_ops.to_open = m32r_open; | |
1575 | m32r_ops.to_close = m32r_close; | |
1576 | m32r_ops.to_detach = m32r_detach; | |
1577 | m32r_ops.to_resume = m32r_resume; | |
1578 | m32r_ops.to_wait = m32r_wait; | |
1579 | m32r_ops.to_fetch_registers = m32r_fetch_register; | |
1580 | m32r_ops.to_store_registers = m32r_store_register; | |
1581 | m32r_ops.to_prepare_to_store = m32r_prepare_to_store; | |
c8e73a31 | 1582 | m32r_ops.deprecated_xfer_memory = m32r_xfer_memory; |
b4b4b794 KI |
1583 | m32r_ops.to_files_info = m32r_files_info; |
1584 | m32r_ops.to_insert_breakpoint = m32r_insert_breakpoint; | |
1585 | m32r_ops.to_remove_breakpoint = m32r_remove_breakpoint; | |
37814c18 KI |
1586 | m32r_ops.to_can_use_hw_breakpoint = m32r_can_use_hw_watchpoint; |
1587 | m32r_ops.to_insert_watchpoint = m32r_insert_watchpoint; | |
1588 | m32r_ops.to_remove_watchpoint = m32r_remove_watchpoint; | |
1589 | m32r_ops.to_stopped_by_watchpoint = m32r_stopped_by_watchpoint; | |
1590 | m32r_ops.to_stopped_data_address = m32r_stopped_data_address; | |
b4b4b794 KI |
1591 | m32r_ops.to_kill = m32r_kill; |
1592 | m32r_ops.to_load = m32r_load; | |
1593 | m32r_ops.to_create_inferior = m32r_create_inferior; | |
1594 | m32r_ops.to_mourn_inferior = m32r_mourn_inferior; | |
1595 | m32r_ops.to_stop = m32r_stop; | |
1596 | m32r_ops.to_stratum = process_stratum; | |
1597 | m32r_ops.to_has_all_memory = 1; | |
1598 | m32r_ops.to_has_memory = 1; | |
1599 | m32r_ops.to_has_stack = 1; | |
1600 | m32r_ops.to_has_registers = 1; | |
1601 | m32r_ops.to_has_execution = 1; | |
1602 | m32r_ops.to_magic = OPS_MAGIC; | |
1603 | }; | |
1604 | ||
1605 | ||
1606 | extern initialize_file_ftype _initialize_remote_m32r; | |
1607 | ||
1608 | void | |
1609 | _initialize_remote_m32r (void) | |
1610 | { | |
1611 | int i; | |
1612 | ||
1613 | init_m32r_ops (); | |
1614 | ||
1615 | /* Initialize breakpoints. */ | |
1616 | for (i = 0; i < MAX_BREAKPOINTS; i++) | |
1617 | bp_address[i] = 0xffffffff; | |
1618 | ||
1619 | /* Initialize access breaks. */ | |
1620 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) | |
1621 | ab_address[i] = 0x00000000; | |
1622 | ||
1623 | add_target (&m32r_ops); | |
1624 | ||
1625 | add_com ("sdireset", class_obscure, sdireset_command, | |
1bedd215 | 1626 | _("Reset SDI connection.")); |
b4b4b794 KI |
1627 | |
1628 | add_com ("sdistatus", class_obscure, sdistatus_command, | |
1bedd215 | 1629 | _("Show status of SDI connection.")); |
b4b4b794 KI |
1630 | |
1631 | add_com ("debug_chaos", class_obscure, debug_chaos_command, | |
1bedd215 | 1632 | _("Debug M32R/Chaos.")); |
b4b4b794 KI |
1633 | |
1634 | add_com ("use_debug_dma", class_obscure, use_debug_dma_command, | |
1bedd215 | 1635 | _("Use debug DMA mem access.")); |
b4b4b794 | 1636 | add_com ("use_mon_code", class_obscure, use_mon_code_command, |
1bedd215 | 1637 | _("Use mon code mem access.")); |
b4b4b794 KI |
1638 | |
1639 | add_com ("use_ib_break", class_obscure, use_ib_breakpoints_command, | |
1bedd215 | 1640 | _("Set breakpoints by IB break.")); |
b4b4b794 | 1641 | add_com ("use_dbt_break", class_obscure, use_dbt_breakpoints_command, |
1bedd215 | 1642 | _("Set breakpoints by dbt.")); |
b4b4b794 | 1643 | } |