| 1 | /* Remote debugging interface for M32R/SDI. |
| 2 | |
| 3 | Copyright (C) 2003-2012 Free Software Foundation, Inc. |
| 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 |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 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 |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 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 "gdbthread.h" |
| 31 | #include <ctype.h> |
| 32 | #include <signal.h> |
| 33 | #ifdef __MINGW32__ |
| 34 | #include <winsock2.h> |
| 35 | #else |
| 36 | #include <netinet/in.h> |
| 37 | #endif |
| 38 | #include <sys/types.h> |
| 39 | #include <sys/time.h> |
| 40 | #include <signal.h> |
| 41 | #include <time.h> |
| 42 | #include "gdb_bfd.h" |
| 43 | |
| 44 | |
| 45 | #include "serial.h" |
| 46 | |
| 47 | /* Descriptor for I/O to remote machine. */ |
| 48 | |
| 49 | static struct serial *sdi_desc = NULL; |
| 50 | |
| 51 | #define SDI_TIMEOUT 30 |
| 52 | |
| 53 | |
| 54 | #define SDIPORT 3232 |
| 55 | |
| 56 | static char chip_name[64]; |
| 57 | |
| 58 | static int step_mode; |
| 59 | static unsigned long last_pc_addr = 0xffffffff; |
| 60 | static unsigned char last_pc_addr_data[2]; |
| 61 | |
| 62 | static int mmu_on = 0; |
| 63 | |
| 64 | static int use_ib_breakpoints = 1; |
| 65 | |
| 66 | #define MAX_BREAKPOINTS 1024 |
| 67 | static int max_ib_breakpoints; |
| 68 | static unsigned long bp_address[MAX_BREAKPOINTS]; |
| 69 | static unsigned char bp_data[MAX_BREAKPOINTS][4]; |
| 70 | |
| 71 | /* dbt -> nop */ |
| 72 | static const unsigned char dbt_bp_entry[] = { |
| 73 | 0x10, 0xe0, 0x70, 0x00 |
| 74 | }; |
| 75 | |
| 76 | #define MAX_ACCESS_BREAKS 4 |
| 77 | static int max_access_breaks; |
| 78 | static unsigned long ab_address[MAX_ACCESS_BREAKS]; |
| 79 | static unsigned int ab_type[MAX_ACCESS_BREAKS]; |
| 80 | static unsigned int ab_size[MAX_ACCESS_BREAKS]; |
| 81 | static CORE_ADDR hit_watchpoint_addr = 0; |
| 82 | |
| 83 | static int interrupted = 0; |
| 84 | |
| 85 | /* Forward data declarations */ |
| 86 | extern struct target_ops m32r_ops; |
| 87 | |
| 88 | /* This is the ptid we use while we're connected to the remote. Its |
| 89 | value is arbitrary, as the target doesn't have a notion of |
| 90 | processes or threads, but we need something non-null to place in |
| 91 | inferior_ptid. */ |
| 92 | static ptid_t remote_m32r_ptid; |
| 93 | |
| 94 | /* Commands */ |
| 95 | #define SDI_OPEN 1 |
| 96 | #define SDI_CLOSE 2 |
| 97 | #define SDI_RELEASE 3 |
| 98 | #define SDI_READ_CPU_REG 4 |
| 99 | #define SDI_WRITE_CPU_REG 5 |
| 100 | #define SDI_READ_MEMORY 6 |
| 101 | #define SDI_WRITE_MEMORY 7 |
| 102 | #define SDI_EXEC_CPU 8 |
| 103 | #define SDI_STOP_CPU 9 |
| 104 | #define SDI_WAIT_FOR_READY 10 |
| 105 | #define SDI_GET_ATTR 11 |
| 106 | #define SDI_SET_ATTR 12 |
| 107 | #define SDI_STATUS 13 |
| 108 | |
| 109 | /* Attributes */ |
| 110 | #define SDI_ATTR_NAME 1 |
| 111 | #define SDI_ATTR_BRK 2 |
| 112 | #define SDI_ATTR_ABRK 3 |
| 113 | #define SDI_ATTR_CACHE 4 |
| 114 | #define SDI_CACHE_TYPE_M32102 0 |
| 115 | #define SDI_CACHE_TYPE_CHAOS 1 |
| 116 | #define SDI_ATTR_MEM_ACCESS 5 |
| 117 | #define SDI_MEM_ACCESS_DEBUG_DMA 0 |
| 118 | #define SDI_MEM_ACCESS_MON_CODE 1 |
| 119 | |
| 120 | /* Registers */ |
| 121 | #define SDI_REG_R0 0 |
| 122 | #define SDI_REG_R1 1 |
| 123 | #define SDI_REG_R2 2 |
| 124 | #define SDI_REG_R3 3 |
| 125 | #define SDI_REG_R4 4 |
| 126 | #define SDI_REG_R5 5 |
| 127 | #define SDI_REG_R6 6 |
| 128 | #define SDI_REG_R7 7 |
| 129 | #define SDI_REG_R8 8 |
| 130 | #define SDI_REG_R9 9 |
| 131 | #define SDI_REG_R10 10 |
| 132 | #define SDI_REG_R11 11 |
| 133 | #define SDI_REG_R12 12 |
| 134 | #define SDI_REG_FP 13 |
| 135 | #define SDI_REG_LR 14 |
| 136 | #define SDI_REG_SP 15 |
| 137 | #define SDI_REG_PSW 16 |
| 138 | #define SDI_REG_CBR 17 |
| 139 | #define SDI_REG_SPI 18 |
| 140 | #define SDI_REG_SPU 19 |
| 141 | #define SDI_REG_CR4 20 |
| 142 | #define SDI_REG_EVB 21 |
| 143 | #define SDI_REG_BPC 22 |
| 144 | #define SDI_REG_CR7 23 |
| 145 | #define SDI_REG_BBPSW 24 |
| 146 | #define SDI_REG_CR9 25 |
| 147 | #define SDI_REG_CR10 26 |
| 148 | #define SDI_REG_CR11 27 |
| 149 | #define SDI_REG_CR12 28 |
| 150 | #define SDI_REG_WR 29 |
| 151 | #define SDI_REG_BBPC 30 |
| 152 | #define SDI_REG_PBP 31 |
| 153 | #define SDI_REG_ACCH 32 |
| 154 | #define SDI_REG_ACCL 33 |
| 155 | #define SDI_REG_ACC1H 34 |
| 156 | #define SDI_REG_ACC1L 35 |
| 157 | |
| 158 | |
| 159 | /* Low level communication functions. */ |
| 160 | |
| 161 | /* Check an ack packet from the target. */ |
| 162 | static int |
| 163 | get_ack (void) |
| 164 | { |
| 165 | int c; |
| 166 | |
| 167 | if (!sdi_desc) |
| 168 | return -1; |
| 169 | |
| 170 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 171 | |
| 172 | if (c < 0) |
| 173 | return -1; |
| 174 | |
| 175 | if (c != '+') /* error */ |
| 176 | return -1; |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | /* Send data to the target and check an ack packet. */ |
| 182 | static int |
| 183 | send_data (void *buf, int len) |
| 184 | { |
| 185 | if (!sdi_desc) |
| 186 | return -1; |
| 187 | |
| 188 | if (serial_write (sdi_desc, buf, len) != 0) |
| 189 | return -1; |
| 190 | |
| 191 | if (get_ack () == -1) |
| 192 | return -1; |
| 193 | |
| 194 | return len; |
| 195 | } |
| 196 | |
| 197 | /* Receive data from the target. */ |
| 198 | static int |
| 199 | recv_data (void *buf, int len) |
| 200 | { |
| 201 | int total = 0; |
| 202 | int c; |
| 203 | |
| 204 | if (!sdi_desc) |
| 205 | return -1; |
| 206 | |
| 207 | while (total < len) |
| 208 | { |
| 209 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 210 | |
| 211 | if (c < 0) |
| 212 | return -1; |
| 213 | |
| 214 | ((unsigned char *) buf)[total++] = c; |
| 215 | } |
| 216 | |
| 217 | return len; |
| 218 | } |
| 219 | |
| 220 | /* Store unsigned long parameter on packet. */ |
| 221 | static void |
| 222 | store_long_parameter (void *buf, long val) |
| 223 | { |
| 224 | val = htonl (val); |
| 225 | memcpy (buf, &val, 4); |
| 226 | } |
| 227 | |
| 228 | static int |
| 229 | send_cmd (unsigned char cmd) |
| 230 | { |
| 231 | unsigned char buf[1]; |
| 232 | |
| 233 | buf[0] = cmd; |
| 234 | return send_data (buf, 1); |
| 235 | } |
| 236 | |
| 237 | static int |
| 238 | send_one_arg_cmd (unsigned char cmd, unsigned char arg1) |
| 239 | { |
| 240 | unsigned char buf[2]; |
| 241 | |
| 242 | buf[0] = cmd; |
| 243 | buf[1] = arg1; |
| 244 | return send_data (buf, 2); |
| 245 | } |
| 246 | |
| 247 | static int |
| 248 | send_two_arg_cmd (unsigned char cmd, unsigned char arg1, unsigned long arg2) |
| 249 | { |
| 250 | unsigned char buf[6]; |
| 251 | |
| 252 | buf[0] = cmd; |
| 253 | buf[1] = arg1; |
| 254 | store_long_parameter (buf + 2, arg2); |
| 255 | return send_data (buf, 6); |
| 256 | } |
| 257 | |
| 258 | static int |
| 259 | send_three_arg_cmd (unsigned char cmd, unsigned long arg1, unsigned long arg2, |
| 260 | unsigned long arg3) |
| 261 | { |
| 262 | unsigned char buf[13]; |
| 263 | |
| 264 | buf[0] = cmd; |
| 265 | store_long_parameter (buf + 1, arg1); |
| 266 | store_long_parameter (buf + 5, arg2); |
| 267 | store_long_parameter (buf + 9, arg3); |
| 268 | return send_data (buf, 13); |
| 269 | } |
| 270 | |
| 271 | static unsigned char |
| 272 | recv_char_data (void) |
| 273 | { |
| 274 | unsigned char val; |
| 275 | |
| 276 | recv_data (&val, 1); |
| 277 | return val; |
| 278 | } |
| 279 | |
| 280 | static unsigned long |
| 281 | recv_long_data (void) |
| 282 | { |
| 283 | unsigned long val; |
| 284 | |
| 285 | recv_data (&val, 4); |
| 286 | return ntohl (val); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | /* Check if MMU is on. */ |
| 291 | static void |
| 292 | check_mmu_status (void) |
| 293 | { |
| 294 | unsigned long val; |
| 295 | |
| 296 | /* Read PC address. */ |
| 297 | if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC) == -1) |
| 298 | return; |
| 299 | val = recv_long_data (); |
| 300 | if ((val & 0xc0000000) == 0x80000000) |
| 301 | { |
| 302 | mmu_on = 1; |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | /* Read EVB address. */ |
| 307 | if (send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_EVB) == -1) |
| 308 | return; |
| 309 | val = recv_long_data (); |
| 310 | if ((val & 0xc0000000) == 0x80000000) |
| 311 | { |
| 312 | mmu_on = 1; |
| 313 | return; |
| 314 | } |
| 315 | |
| 316 | mmu_on = 0; |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* This is called not only when we first attach, but also when the |
| 321 | user types "run" after having attached. */ |
| 322 | static void |
| 323 | m32r_create_inferior (struct target_ops *ops, char *execfile, |
| 324 | char *args, char **env, int from_tty) |
| 325 | { |
| 326 | CORE_ADDR entry_pt; |
| 327 | |
| 328 | if (args && *args) |
| 329 | error (_("Cannot pass arguments to remote STDEBUG process")); |
| 330 | |
| 331 | if (execfile == 0 || exec_bfd == 0) |
| 332 | error (_("No executable file specified")); |
| 333 | |
| 334 | if (remote_debug) |
| 335 | fprintf_unfiltered (gdb_stdlog, "m32r_create_inferior(%s,%s)\n", execfile, |
| 336 | args); |
| 337 | |
| 338 | entry_pt = bfd_get_start_address (exec_bfd); |
| 339 | |
| 340 | /* The "process" (board) is already stopped awaiting our commands, and |
| 341 | the program is already downloaded. We just set its PC and go. */ |
| 342 | |
| 343 | clear_proceed_status (); |
| 344 | |
| 345 | /* Tell wait_for_inferior that we've started a new process. */ |
| 346 | init_wait_for_inferior (); |
| 347 | |
| 348 | /* Set up the "saved terminal modes" of the inferior |
| 349 | based on what modes we are starting it with. */ |
| 350 | target_terminal_init (); |
| 351 | |
| 352 | /* Install inferior's terminal modes. */ |
| 353 | target_terminal_inferior (); |
| 354 | |
| 355 | regcache_write_pc (get_current_regcache (), entry_pt); |
| 356 | } |
| 357 | |
| 358 | /* Open a connection to a remote debugger. |
| 359 | NAME is the filename used for communication. */ |
| 360 | |
| 361 | static void |
| 362 | m32r_open (char *args, int from_tty) |
| 363 | { |
| 364 | struct hostent *host_ent; |
| 365 | struct sockaddr_in server_addr; |
| 366 | char *port_str, hostname[256]; |
| 367 | int port; |
| 368 | int i, n; |
| 369 | int yes = 1; |
| 370 | |
| 371 | if (remote_debug) |
| 372 | fprintf_unfiltered (gdb_stdlog, "m32r_open(%d)\n", from_tty); |
| 373 | |
| 374 | target_preopen (from_tty); |
| 375 | |
| 376 | push_target (&m32r_ops); |
| 377 | |
| 378 | if (args == NULL) |
| 379 | sprintf (hostname, "localhost:%d", SDIPORT); |
| 380 | else |
| 381 | { |
| 382 | port_str = strchr (args, ':'); |
| 383 | if (port_str == NULL) |
| 384 | sprintf (hostname, "%s:%d", args, SDIPORT); |
| 385 | else |
| 386 | strcpy (hostname, args); |
| 387 | } |
| 388 | |
| 389 | sdi_desc = serial_open (hostname); |
| 390 | if (!sdi_desc) |
| 391 | error (_("Connection refused.")); |
| 392 | |
| 393 | if (get_ack () == -1) |
| 394 | error (_("Cannot connect to SDI target.")); |
| 395 | |
| 396 | if (send_cmd (SDI_OPEN) == -1) |
| 397 | error (_("Cannot connect to SDI target.")); |
| 398 | |
| 399 | /* Get maximum number of ib breakpoints. */ |
| 400 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_BRK); |
| 401 | max_ib_breakpoints = recv_char_data (); |
| 402 | if (remote_debug) |
| 403 | printf_filtered ("Max IB Breakpoints = %d\n", max_ib_breakpoints); |
| 404 | |
| 405 | /* Initialize breakpoints. */ |
| 406 | for (i = 0; i < MAX_BREAKPOINTS; i++) |
| 407 | bp_address[i] = 0xffffffff; |
| 408 | |
| 409 | /* Get maximum number of access breaks. */ |
| 410 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_ABRK); |
| 411 | max_access_breaks = recv_char_data (); |
| 412 | if (remote_debug) |
| 413 | printf_filtered ("Max Access Breaks = %d\n", max_access_breaks); |
| 414 | |
| 415 | /* Initialize access breask. */ |
| 416 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) |
| 417 | ab_address[i] = 0x00000000; |
| 418 | |
| 419 | check_mmu_status (); |
| 420 | |
| 421 | /* Get the name of chip on target board. */ |
| 422 | send_one_arg_cmd (SDI_GET_ATTR, SDI_ATTR_NAME); |
| 423 | recv_data (chip_name, 64); |
| 424 | |
| 425 | if (from_tty) |
| 426 | printf_filtered ("Remote %s connected to %s\n", target_shortname, |
| 427 | chip_name); |
| 428 | } |
| 429 | |
| 430 | /* Close out all files and local state before this target loses control. */ |
| 431 | |
| 432 | static void |
| 433 | m32r_close (int quitting) |
| 434 | { |
| 435 | if (remote_debug) |
| 436 | fprintf_unfiltered (gdb_stdlog, "m32r_close(%d)\n", quitting); |
| 437 | |
| 438 | if (sdi_desc) |
| 439 | { |
| 440 | send_cmd (SDI_CLOSE); |
| 441 | serial_close (sdi_desc); |
| 442 | sdi_desc = NULL; |
| 443 | } |
| 444 | |
| 445 | inferior_ptid = null_ptid; |
| 446 | delete_thread_silent (remote_m32r_ptid); |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | /* Tell the remote machine to resume. */ |
| 451 | |
| 452 | static void |
| 453 | m32r_resume (struct target_ops *ops, |
| 454 | ptid_t ptid, int step, enum gdb_signal sig) |
| 455 | { |
| 456 | unsigned long pc_addr, bp_addr, ab_addr; |
| 457 | int ib_breakpoints; |
| 458 | unsigned char buf[13]; |
| 459 | int i; |
| 460 | |
| 461 | if (remote_debug) |
| 462 | { |
| 463 | if (step) |
| 464 | fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(step)\n"); |
| 465 | else |
| 466 | fprintf_unfiltered (gdb_stdlog, "\nm32r_resume(cont)\n"); |
| 467 | } |
| 468 | |
| 469 | check_mmu_status (); |
| 470 | |
| 471 | pc_addr = regcache_read_pc (get_current_regcache ()); |
| 472 | if (remote_debug) |
| 473 | fprintf_unfiltered (gdb_stdlog, "pc <= 0x%lx\n", pc_addr); |
| 474 | |
| 475 | /* At pc address there is a parallel instruction with +2 offset, |
| 476 | so we have to make it a serial instruction or avoid it. */ |
| 477 | if (pc_addr == last_pc_addr) |
| 478 | { |
| 479 | /* Avoid a parallel nop. */ |
| 480 | if (last_pc_addr_data[0] == 0xf0 && last_pc_addr_data[1] == 0x00) |
| 481 | { |
| 482 | pc_addr += 2; |
| 483 | /* Now we can forget this instruction. */ |
| 484 | last_pc_addr = 0xffffffff; |
| 485 | } |
| 486 | /* Clear a parallel bit. */ |
| 487 | else |
| 488 | { |
| 489 | buf[0] = SDI_WRITE_MEMORY; |
| 490 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 491 | store_long_parameter (buf + 1, pc_addr); |
| 492 | else |
| 493 | store_long_parameter (buf + 1, pc_addr - 1); |
| 494 | store_long_parameter (buf + 5, 1); |
| 495 | buf[9] = last_pc_addr_data[0] & 0x7f; |
| 496 | send_data (buf, 10); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | /* Set PC. */ |
| 501 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr); |
| 502 | |
| 503 | /* step mode. */ |
| 504 | step_mode = step; |
| 505 | if (step) |
| 506 | { |
| 507 | /* Set PBP. */ |
| 508 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, pc_addr | 1); |
| 509 | } |
| 510 | else |
| 511 | { |
| 512 | /* Unset PBP. */ |
| 513 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PBP, 0x00000000); |
| 514 | } |
| 515 | |
| 516 | if (use_ib_breakpoints) |
| 517 | ib_breakpoints = max_ib_breakpoints; |
| 518 | else |
| 519 | ib_breakpoints = 0; |
| 520 | |
| 521 | /* Set ib breakpoints. */ |
| 522 | for (i = 0; i < ib_breakpoints; i++) |
| 523 | { |
| 524 | bp_addr = bp_address[i]; |
| 525 | |
| 526 | if (bp_addr == 0xffffffff) |
| 527 | continue; |
| 528 | |
| 529 | /* Set PBP. */ |
| 530 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 531 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, |
| 532 | 0x00000006); |
| 533 | else |
| 534 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, |
| 535 | 0x06000000); |
| 536 | |
| 537 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8080 + 4 * i, 4, bp_addr); |
| 538 | } |
| 539 | |
| 540 | /* Set dbt breakpoints. */ |
| 541 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) |
| 542 | { |
| 543 | bp_addr = bp_address[i]; |
| 544 | |
| 545 | if (bp_addr == 0xffffffff) |
| 546 | continue; |
| 547 | |
| 548 | if (!mmu_on) |
| 549 | bp_addr &= 0x7fffffff; |
| 550 | |
| 551 | /* Write DBT instruction. */ |
| 552 | buf[0] = SDI_WRITE_MEMORY; |
| 553 | store_long_parameter (buf + 1, (bp_addr & 0xfffffffc)); |
| 554 | store_long_parameter (buf + 5, 4); |
| 555 | if ((bp_addr & 2) == 0 && bp_addr != (pc_addr & 0xfffffffc)) |
| 556 | { |
| 557 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 558 | { |
| 559 | buf[9] = dbt_bp_entry[0]; |
| 560 | buf[10] = dbt_bp_entry[1]; |
| 561 | buf[11] = dbt_bp_entry[2]; |
| 562 | buf[12] = dbt_bp_entry[3]; |
| 563 | } |
| 564 | else |
| 565 | { |
| 566 | buf[9] = dbt_bp_entry[3]; |
| 567 | buf[10] = dbt_bp_entry[2]; |
| 568 | buf[11] = dbt_bp_entry[1]; |
| 569 | buf[12] = dbt_bp_entry[0]; |
| 570 | } |
| 571 | } |
| 572 | else |
| 573 | { |
| 574 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 575 | { |
| 576 | if ((bp_addr & 2) == 0) |
| 577 | { |
| 578 | buf[9] = dbt_bp_entry[0]; |
| 579 | buf[10] = dbt_bp_entry[1]; |
| 580 | buf[11] = bp_data[i][2] & 0x7f; |
| 581 | buf[12] = bp_data[i][3]; |
| 582 | } |
| 583 | else |
| 584 | { |
| 585 | buf[9] = bp_data[i][0]; |
| 586 | buf[10] = bp_data[i][1]; |
| 587 | buf[11] = dbt_bp_entry[0]; |
| 588 | buf[12] = dbt_bp_entry[1]; |
| 589 | } |
| 590 | } |
| 591 | else |
| 592 | { |
| 593 | if ((bp_addr & 2) == 0) |
| 594 | { |
| 595 | buf[9] = bp_data[i][0]; |
| 596 | buf[10] = bp_data[i][1] & 0x7f; |
| 597 | buf[11] = dbt_bp_entry[1]; |
| 598 | buf[12] = dbt_bp_entry[0]; |
| 599 | } |
| 600 | else |
| 601 | { |
| 602 | buf[9] = dbt_bp_entry[1]; |
| 603 | buf[10] = dbt_bp_entry[0]; |
| 604 | buf[11] = bp_data[i][2]; |
| 605 | buf[12] = bp_data[i][3]; |
| 606 | } |
| 607 | } |
| 608 | } |
| 609 | send_data (buf, 13); |
| 610 | } |
| 611 | |
| 612 | /* Set access breaks. */ |
| 613 | for (i = 0; i < max_access_breaks; i++) |
| 614 | { |
| 615 | ab_addr = ab_address[i]; |
| 616 | |
| 617 | if (ab_addr == 0x00000000) |
| 618 | continue; |
| 619 | |
| 620 | /* DBC register. */ |
| 621 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 622 | { |
| 623 | switch (ab_type[i]) |
| 624 | { |
| 625 | case 0: /* write watch */ |
| 626 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 627 | 0x00000086); |
| 628 | break; |
| 629 | case 1: /* read watch */ |
| 630 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 631 | 0x00000046); |
| 632 | break; |
| 633 | case 2: /* access watch */ |
| 634 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 635 | 0x00000006); |
| 636 | break; |
| 637 | } |
| 638 | } |
| 639 | else |
| 640 | { |
| 641 | switch (ab_type[i]) |
| 642 | { |
| 643 | case 0: /* write watch */ |
| 644 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 645 | 0x86000000); |
| 646 | break; |
| 647 | case 1: /* read watch */ |
| 648 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 649 | 0x46000000); |
| 650 | break; |
| 651 | case 2: /* access watch */ |
| 652 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 653 | 0x06000000); |
| 654 | break; |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | /* DBAH register. */ |
| 659 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8180 + 4 * i, 4, ab_addr); |
| 660 | |
| 661 | /* DBAL register. */ |
| 662 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8200 + 4 * i, 4, |
| 663 | 0xffffffff); |
| 664 | |
| 665 | /* DBD register. */ |
| 666 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8280 + 4 * i, 4, |
| 667 | 0x00000000); |
| 668 | |
| 669 | /* DBDM register. */ |
| 670 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8300 + 4 * i, 4, |
| 671 | 0x00000000); |
| 672 | } |
| 673 | |
| 674 | /* Resume program. */ |
| 675 | send_cmd (SDI_EXEC_CPU); |
| 676 | |
| 677 | /* Without this, some commands which require an active target (such as kill) |
| 678 | won't work. This variable serves (at least) double duty as both the pid |
| 679 | of the target process (if it has such), and as a flag indicating that a |
| 680 | target is active. These functions should be split out into seperate |
| 681 | variables, especially since GDB will someday have a notion of debugging |
| 682 | several processes. */ |
| 683 | inferior_ptid = remote_m32r_ptid; |
| 684 | add_thread_silent (remote_m32r_ptid); |
| 685 | |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | /* Wait until the remote machine stops, then return, |
| 690 | storing status in STATUS just as `wait' would. */ |
| 691 | |
| 692 | static void |
| 693 | gdb_cntrl_c (int signo) |
| 694 | { |
| 695 | if (remote_debug) |
| 696 | fprintf_unfiltered (gdb_stdlog, "interrupt\n"); |
| 697 | interrupted = 1; |
| 698 | } |
| 699 | |
| 700 | static ptid_t |
| 701 | m32r_wait (struct target_ops *ops, |
| 702 | ptid_t ptid, struct target_waitstatus *status, int options) |
| 703 | { |
| 704 | static RETSIGTYPE (*prev_sigint) (); |
| 705 | unsigned long bp_addr, pc_addr; |
| 706 | int ib_breakpoints; |
| 707 | long i; |
| 708 | unsigned char buf[13]; |
| 709 | int ret, c; |
| 710 | |
| 711 | if (remote_debug) |
| 712 | fprintf_unfiltered (gdb_stdlog, "m32r_wait()\n"); |
| 713 | |
| 714 | status->kind = TARGET_WAITKIND_EXITED; |
| 715 | status->value.sig = GDB_SIGNAL_0; |
| 716 | |
| 717 | interrupted = 0; |
| 718 | prev_sigint = signal (SIGINT, gdb_cntrl_c); |
| 719 | |
| 720 | /* Wait for ready. */ |
| 721 | buf[0] = SDI_WAIT_FOR_READY; |
| 722 | if (serial_write (sdi_desc, buf, 1) != 0) |
| 723 | error (_("Remote connection closed")); |
| 724 | |
| 725 | while (1) |
| 726 | { |
| 727 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 728 | if (c < 0) |
| 729 | error (_("Remote connection closed")); |
| 730 | |
| 731 | if (c == '-') /* error */ |
| 732 | { |
| 733 | status->kind = TARGET_WAITKIND_STOPPED; |
| 734 | status->value.sig = GDB_SIGNAL_HUP; |
| 735 | return inferior_ptid; |
| 736 | } |
| 737 | else if (c == '+') /* stopped */ |
| 738 | break; |
| 739 | |
| 740 | if (interrupted) |
| 741 | ret = serial_write (sdi_desc, "!", 1); /* packet to interrupt */ |
| 742 | else |
| 743 | ret = serial_write (sdi_desc, ".", 1); /* packet to wait */ |
| 744 | if (ret != 0) |
| 745 | error (_("Remote connection closed")); |
| 746 | } |
| 747 | |
| 748 | status->kind = TARGET_WAITKIND_STOPPED; |
| 749 | if (interrupted) |
| 750 | status->value.sig = GDB_SIGNAL_INT; |
| 751 | else |
| 752 | status->value.sig = GDB_SIGNAL_TRAP; |
| 753 | |
| 754 | interrupted = 0; |
| 755 | signal (SIGINT, prev_sigint); |
| 756 | |
| 757 | check_mmu_status (); |
| 758 | |
| 759 | /* Recover parallel bit. */ |
| 760 | if (last_pc_addr != 0xffffffff) |
| 761 | { |
| 762 | buf[0] = SDI_WRITE_MEMORY; |
| 763 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 764 | store_long_parameter (buf + 1, last_pc_addr); |
| 765 | else |
| 766 | store_long_parameter (buf + 1, last_pc_addr - 1); |
| 767 | store_long_parameter (buf + 5, 1); |
| 768 | buf[9] = last_pc_addr_data[0]; |
| 769 | send_data (buf, 10); |
| 770 | last_pc_addr = 0xffffffff; |
| 771 | } |
| 772 | |
| 773 | if (use_ib_breakpoints) |
| 774 | ib_breakpoints = max_ib_breakpoints; |
| 775 | else |
| 776 | ib_breakpoints = 0; |
| 777 | |
| 778 | /* Set back pc by 2 if m32r is stopped with dbt. */ |
| 779 | last_pc_addr = 0xffffffff; |
| 780 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BPC); |
| 781 | pc_addr = recv_long_data () - 2; |
| 782 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) |
| 783 | { |
| 784 | if (pc_addr == bp_address[i]) |
| 785 | { |
| 786 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BPC, pc_addr); |
| 787 | |
| 788 | /* If there is a parallel instruction with +2 offset at pc |
| 789 | address, we have to take care of it later. */ |
| 790 | if ((pc_addr & 0x2) != 0) |
| 791 | { |
| 792 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 793 | { |
| 794 | if ((bp_data[i][2] & 0x80) != 0) |
| 795 | { |
| 796 | last_pc_addr = pc_addr; |
| 797 | last_pc_addr_data[0] = bp_data[i][2]; |
| 798 | last_pc_addr_data[1] = bp_data[i][3]; |
| 799 | } |
| 800 | } |
| 801 | else |
| 802 | { |
| 803 | if ((bp_data[i][1] & 0x80) != 0) |
| 804 | { |
| 805 | last_pc_addr = pc_addr; |
| 806 | last_pc_addr_data[0] = bp_data[i][1]; |
| 807 | last_pc_addr_data[1] = bp_data[i][0]; |
| 808 | } |
| 809 | } |
| 810 | } |
| 811 | break; |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | /* Remove ib breakpoints. */ |
| 816 | for (i = 0; i < ib_breakpoints; i++) |
| 817 | { |
| 818 | if (bp_address[i] != 0xffffffff) |
| 819 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8000 + 4 * i, 4, |
| 820 | 0x00000000); |
| 821 | } |
| 822 | /* Remove dbt breakpoints. */ |
| 823 | for (i = ib_breakpoints; i < MAX_BREAKPOINTS; i++) |
| 824 | { |
| 825 | bp_addr = bp_address[i]; |
| 826 | if (bp_addr != 0xffffffff) |
| 827 | { |
| 828 | if (!mmu_on) |
| 829 | bp_addr &= 0x7fffffff; |
| 830 | buf[0] = SDI_WRITE_MEMORY; |
| 831 | store_long_parameter (buf + 1, bp_addr & 0xfffffffc); |
| 832 | store_long_parameter (buf + 5, 4); |
| 833 | buf[9] = bp_data[i][0]; |
| 834 | buf[10] = bp_data[i][1]; |
| 835 | buf[11] = bp_data[i][2]; |
| 836 | buf[12] = bp_data[i][3]; |
| 837 | send_data (buf, 13); |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | /* Remove access breaks. */ |
| 842 | hit_watchpoint_addr = 0; |
| 843 | for (i = 0; i < max_access_breaks; i++) |
| 844 | { |
| 845 | if (ab_address[i] != 0x00000000) |
| 846 | { |
| 847 | buf[0] = SDI_READ_MEMORY; |
| 848 | store_long_parameter (buf + 1, 0xffff8100 + 4 * i); |
| 849 | store_long_parameter (buf + 5, 4); |
| 850 | serial_write (sdi_desc, buf, 9); |
| 851 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 852 | if (c != '-' && recv_data (buf, 4) != -1) |
| 853 | { |
| 854 | if (gdbarch_byte_order (target_gdbarch) == BFD_ENDIAN_BIG) |
| 855 | { |
| 856 | if ((buf[3] & 0x1) == 0x1) |
| 857 | hit_watchpoint_addr = ab_address[i]; |
| 858 | } |
| 859 | else |
| 860 | { |
| 861 | if ((buf[0] & 0x1) == 0x1) |
| 862 | hit_watchpoint_addr = ab_address[i]; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | send_three_arg_cmd (SDI_WRITE_MEMORY, 0xffff8100 + 4 * i, 4, |
| 867 | 0x00000000); |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | if (remote_debug) |
| 872 | fprintf_unfiltered (gdb_stdlog, "pc => 0x%lx\n", pc_addr); |
| 873 | |
| 874 | return inferior_ptid; |
| 875 | } |
| 876 | |
| 877 | /* Terminate the open connection to the remote debugger. |
| 878 | Use this when you want to detach and do something else |
| 879 | with your gdb. */ |
| 880 | static void |
| 881 | m32r_detach (struct target_ops *ops, char *args, int from_tty) |
| 882 | { |
| 883 | if (remote_debug) |
| 884 | fprintf_unfiltered (gdb_stdlog, "m32r_detach(%d)\n", from_tty); |
| 885 | |
| 886 | m32r_resume (ops, inferior_ptid, 0, GDB_SIGNAL_0); |
| 887 | |
| 888 | /* Calls m32r_close to do the real work. */ |
| 889 | pop_target (); |
| 890 | if (from_tty) |
| 891 | fprintf_unfiltered (gdb_stdlog, "Ending remote %s debugging\n", |
| 892 | target_shortname); |
| 893 | } |
| 894 | |
| 895 | /* Return the id of register number REGNO. */ |
| 896 | |
| 897 | static int |
| 898 | get_reg_id (int regno) |
| 899 | { |
| 900 | switch (regno) |
| 901 | { |
| 902 | case 20: |
| 903 | return SDI_REG_BBPC; |
| 904 | case 21: |
| 905 | return SDI_REG_BPC; |
| 906 | case 22: |
| 907 | return SDI_REG_ACCL; |
| 908 | case 23: |
| 909 | return SDI_REG_ACCH; |
| 910 | case 24: |
| 911 | return SDI_REG_EVB; |
| 912 | } |
| 913 | |
| 914 | return regno; |
| 915 | } |
| 916 | |
| 917 | /* Fetch register REGNO, or all registers if REGNO is -1. |
| 918 | Returns errno value. */ |
| 919 | static void |
| 920 | m32r_fetch_register (struct target_ops *ops, |
| 921 | struct regcache *regcache, int regno) |
| 922 | { |
| 923 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 924 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 925 | unsigned long val, val2, regid; |
| 926 | |
| 927 | if (regno == -1) |
| 928 | { |
| 929 | for (regno = 0; |
| 930 | regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
| 931 | regno++) |
| 932 | m32r_fetch_register (ops, regcache, regno); |
| 933 | } |
| 934 | else |
| 935 | { |
| 936 | char buffer[MAX_REGISTER_SIZE]; |
| 937 | |
| 938 | regid = get_reg_id (regno); |
| 939 | send_one_arg_cmd (SDI_READ_CPU_REG, regid); |
| 940 | val = recv_long_data (); |
| 941 | |
| 942 | if (regid == SDI_REG_PSW) |
| 943 | { |
| 944 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW); |
| 945 | val2 = recv_long_data (); |
| 946 | val = ((0x00cf & val2) << 8) | ((0xcf00 & val) >> 8); |
| 947 | } |
| 948 | |
| 949 | if (remote_debug) |
| 950 | fprintf_unfiltered (gdb_stdlog, "m32r_fetch_register(%d,0x%08lx)\n", |
| 951 | regno, val); |
| 952 | |
| 953 | /* We got the number the register holds, but gdb expects to see a |
| 954 | value in the target byte ordering. */ |
| 955 | store_unsigned_integer (buffer, 4, byte_order, val); |
| 956 | regcache_raw_supply (regcache, regno, buffer); |
| 957 | } |
| 958 | return; |
| 959 | } |
| 960 | |
| 961 | /* Store register REGNO, or all if REGNO == 0. |
| 962 | Return errno value. */ |
| 963 | static void |
| 964 | m32r_store_register (struct target_ops *ops, |
| 965 | struct regcache *regcache, int regno) |
| 966 | { |
| 967 | int regid; |
| 968 | ULONGEST regval, tmp; |
| 969 | |
| 970 | if (regno == -1) |
| 971 | { |
| 972 | for (regno = 0; |
| 973 | regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
| 974 | regno++) |
| 975 | m32r_store_register (ops, regcache, regno); |
| 976 | } |
| 977 | else |
| 978 | { |
| 979 | regcache_cooked_read_unsigned (regcache, regno, ®val); |
| 980 | regid = get_reg_id (regno); |
| 981 | |
| 982 | if (regid == SDI_REG_PSW) |
| 983 | { |
| 984 | unsigned long psw, bbpsw; |
| 985 | |
| 986 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_PSW); |
| 987 | psw = recv_long_data (); |
| 988 | |
| 989 | send_one_arg_cmd (SDI_READ_CPU_REG, SDI_REG_BBPSW); |
| 990 | bbpsw = recv_long_data (); |
| 991 | |
| 992 | tmp = (0x00cf & psw) | ((0x00cf & regval) << 8); |
| 993 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_PSW, tmp); |
| 994 | |
| 995 | tmp = (0x0030 & bbpsw) | ((0xcf00 & regval) >> 8); |
| 996 | send_two_arg_cmd (SDI_WRITE_CPU_REG, SDI_REG_BBPSW, tmp); |
| 997 | } |
| 998 | else |
| 999 | { |
| 1000 | send_two_arg_cmd (SDI_WRITE_CPU_REG, regid, regval); |
| 1001 | } |
| 1002 | |
| 1003 | if (remote_debug) |
| 1004 | fprintf_unfiltered (gdb_stdlog, "m32r_store_register(%d,0x%08lu)\n", |
| 1005 | regno, (unsigned long) regval); |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | /* Get ready to modify the registers array. On machines which store |
| 1010 | individual registers, this doesn't need to do anything. On machines |
| 1011 | which store all the registers in one fell swoop, this makes sure |
| 1012 | that registers contains all the registers from the program being |
| 1013 | debugged. */ |
| 1014 | |
| 1015 | static void |
| 1016 | m32r_prepare_to_store (struct regcache *regcache) |
| 1017 | { |
| 1018 | /* Do nothing, since we can store individual regs. */ |
| 1019 | if (remote_debug) |
| 1020 | fprintf_unfiltered (gdb_stdlog, "m32r_prepare_to_store()\n"); |
| 1021 | } |
| 1022 | |
| 1023 | static void |
| 1024 | m32r_files_info (struct target_ops *target) |
| 1025 | { |
| 1026 | const char *file = "nothing"; |
| 1027 | |
| 1028 | if (exec_bfd) |
| 1029 | { |
| 1030 | file = bfd_get_filename (exec_bfd); |
| 1031 | printf_filtered ("\tAttached to %s running program %s\n", |
| 1032 | chip_name, file); |
| 1033 | } |
| 1034 | } |
| 1035 | |
| 1036 | /* Read/Write memory. */ |
| 1037 | static int |
| 1038 | m32r_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
| 1039 | int write, |
| 1040 | struct mem_attrib *attrib, struct target_ops *target) |
| 1041 | { |
| 1042 | unsigned long taddr; |
| 1043 | unsigned char buf[0x2000]; |
| 1044 | int ret, c; |
| 1045 | |
| 1046 | taddr = memaddr; |
| 1047 | |
| 1048 | if (!mmu_on) |
| 1049 | { |
| 1050 | if ((taddr & 0xa0000000) == 0x80000000) |
| 1051 | taddr &= 0x7fffffff; |
| 1052 | } |
| 1053 | |
| 1054 | if (remote_debug) |
| 1055 | { |
| 1056 | if (write) |
| 1057 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%s,%d,write)\n", |
| 1058 | paddress (target_gdbarch, memaddr), len); |
| 1059 | else |
| 1060 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory(%s,%d,read)\n", |
| 1061 | paddress (target_gdbarch, memaddr), len); |
| 1062 | } |
| 1063 | |
| 1064 | if (write) |
| 1065 | { |
| 1066 | buf[0] = SDI_WRITE_MEMORY; |
| 1067 | store_long_parameter (buf + 1, taddr); |
| 1068 | store_long_parameter (buf + 5, len); |
| 1069 | if (len < 0x1000) |
| 1070 | { |
| 1071 | memcpy (buf + 9, myaddr, len); |
| 1072 | ret = send_data (buf, len + 9) - 9; |
| 1073 | } |
| 1074 | else |
| 1075 | { |
| 1076 | if (serial_write (sdi_desc, buf, 9) != 0) |
| 1077 | { |
| 1078 | if (remote_debug) |
| 1079 | fprintf_unfiltered (gdb_stdlog, |
| 1080 | "m32r_xfer_memory() failed\n"); |
| 1081 | return 0; |
| 1082 | } |
| 1083 | ret = send_data (myaddr, len); |
| 1084 | } |
| 1085 | } |
| 1086 | else |
| 1087 | { |
| 1088 | buf[0] = SDI_READ_MEMORY; |
| 1089 | store_long_parameter (buf + 1, taddr); |
| 1090 | store_long_parameter (buf + 5, len); |
| 1091 | if (serial_write (sdi_desc, buf, 9) != 0) |
| 1092 | { |
| 1093 | if (remote_debug) |
| 1094 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n"); |
| 1095 | return 0; |
| 1096 | } |
| 1097 | |
| 1098 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 1099 | if (c < 0 || c == '-') |
| 1100 | { |
| 1101 | if (remote_debug) |
| 1102 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() failed\n"); |
| 1103 | return 0; |
| 1104 | } |
| 1105 | |
| 1106 | ret = recv_data (myaddr, len); |
| 1107 | } |
| 1108 | |
| 1109 | if (ret <= 0) |
| 1110 | { |
| 1111 | if (remote_debug) |
| 1112 | fprintf_unfiltered (gdb_stdlog, "m32r_xfer_memory() fails\n"); |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
| 1116 | return ret; |
| 1117 | } |
| 1118 | |
| 1119 | static void |
| 1120 | m32r_kill (struct target_ops *ops) |
| 1121 | { |
| 1122 | if (remote_debug) |
| 1123 | fprintf_unfiltered (gdb_stdlog, "m32r_kill()\n"); |
| 1124 | |
| 1125 | inferior_ptid = null_ptid; |
| 1126 | delete_thread_silent (remote_m32r_ptid); |
| 1127 | |
| 1128 | return; |
| 1129 | } |
| 1130 | |
| 1131 | /* Clean up when a program exits. |
| 1132 | |
| 1133 | The program actually lives on in the remote processor's RAM, and may be |
| 1134 | run again without a download. Don't leave it full of breakpoint |
| 1135 | instructions. */ |
| 1136 | |
| 1137 | static void |
| 1138 | m32r_mourn_inferior (struct target_ops *ops) |
| 1139 | { |
| 1140 | if (remote_debug) |
| 1141 | fprintf_unfiltered (gdb_stdlog, "m32r_mourn_inferior()\n"); |
| 1142 | |
| 1143 | remove_breakpoints (); |
| 1144 | generic_mourn_inferior (); |
| 1145 | } |
| 1146 | |
| 1147 | static int |
| 1148 | m32r_insert_breakpoint (struct gdbarch *gdbarch, |
| 1149 | struct bp_target_info *bp_tgt) |
| 1150 | { |
| 1151 | CORE_ADDR addr = bp_tgt->placed_address; |
| 1152 | int ib_breakpoints; |
| 1153 | unsigned char buf[13]; |
| 1154 | int i, c; |
| 1155 | |
| 1156 | if (remote_debug) |
| 1157 | fprintf_unfiltered (gdb_stdlog, "m32r_insert_breakpoint(%s,...)\n", |
| 1158 | paddress (gdbarch, addr)); |
| 1159 | |
| 1160 | if (use_ib_breakpoints) |
| 1161 | ib_breakpoints = max_ib_breakpoints; |
| 1162 | else |
| 1163 | ib_breakpoints = 0; |
| 1164 | |
| 1165 | for (i = 0; i < MAX_BREAKPOINTS; i++) |
| 1166 | { |
| 1167 | if (bp_address[i] == 0xffffffff) |
| 1168 | { |
| 1169 | bp_address[i] = addr; |
| 1170 | if (i >= ib_breakpoints) |
| 1171 | { |
| 1172 | buf[0] = SDI_READ_MEMORY; |
| 1173 | if (mmu_on) |
| 1174 | store_long_parameter (buf + 1, addr & 0xfffffffc); |
| 1175 | else |
| 1176 | store_long_parameter (buf + 1, addr & 0x7ffffffc); |
| 1177 | store_long_parameter (buf + 5, 4); |
| 1178 | serial_write (sdi_desc, buf, 9); |
| 1179 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 1180 | if (c != '-') |
| 1181 | recv_data (bp_data[i], 4); |
| 1182 | } |
| 1183 | return 0; |
| 1184 | } |
| 1185 | } |
| 1186 | |
| 1187 | error (_("Too many breakpoints")); |
| 1188 | return 1; |
| 1189 | } |
| 1190 | |
| 1191 | static int |
| 1192 | m32r_remove_breakpoint (struct gdbarch *gdbarch, |
| 1193 | struct bp_target_info *bp_tgt) |
| 1194 | { |
| 1195 | CORE_ADDR addr = bp_tgt->placed_address; |
| 1196 | int i; |
| 1197 | |
| 1198 | if (remote_debug) |
| 1199 | fprintf_unfiltered (gdb_stdlog, "m32r_remove_breakpoint(%s)\n", |
| 1200 | paddress (gdbarch, addr)); |
| 1201 | |
| 1202 | for (i = 0; i < MAX_BREAKPOINTS; i++) |
| 1203 | { |
| 1204 | if (bp_address[i] == addr) |
| 1205 | { |
| 1206 | bp_address[i] = 0xffffffff; |
| 1207 | break; |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | return 0; |
| 1212 | } |
| 1213 | |
| 1214 | static void |
| 1215 | m32r_load (char *args, int from_tty) |
| 1216 | { |
| 1217 | struct cleanup *old_chain; |
| 1218 | asection *section; |
| 1219 | bfd *pbfd; |
| 1220 | bfd_vma entry; |
| 1221 | char *filename; |
| 1222 | int quiet; |
| 1223 | int nostart; |
| 1224 | struct timeval start_time, end_time; |
| 1225 | unsigned long data_count; /* Number of bytes transferred to memory. */ |
| 1226 | static RETSIGTYPE (*prev_sigint) (); |
| 1227 | |
| 1228 | /* for direct tcp connections, we can do a fast binary download. */ |
| 1229 | quiet = 0; |
| 1230 | nostart = 0; |
| 1231 | filename = NULL; |
| 1232 | |
| 1233 | while (*args != '\000') |
| 1234 | { |
| 1235 | char *arg; |
| 1236 | |
| 1237 | while (isspace (*args)) |
| 1238 | args++; |
| 1239 | |
| 1240 | arg = args; |
| 1241 | |
| 1242 | while ((*args != '\000') && !isspace (*args)) |
| 1243 | args++; |
| 1244 | |
| 1245 | if (*args != '\000') |
| 1246 | *args++ = '\000'; |
| 1247 | |
| 1248 | if (*arg != '-') |
| 1249 | filename = arg; |
| 1250 | else if (strncmp (arg, "-quiet", strlen (arg)) == 0) |
| 1251 | quiet = 1; |
| 1252 | else if (strncmp (arg, "-nostart", strlen (arg)) == 0) |
| 1253 | nostart = 1; |
| 1254 | else |
| 1255 | error (_("Unknown option `%s'"), arg); |
| 1256 | } |
| 1257 | |
| 1258 | if (!filename) |
| 1259 | filename = get_exec_file (1); |
| 1260 | |
| 1261 | pbfd = gdb_bfd_openr (filename, gnutarget); |
| 1262 | if (pbfd == NULL) |
| 1263 | { |
| 1264 | perror_with_name (filename); |
| 1265 | return; |
| 1266 | } |
| 1267 | old_chain = make_cleanup_bfd_unref (pbfd); |
| 1268 | |
| 1269 | if (!bfd_check_format (pbfd, bfd_object)) |
| 1270 | error (_("\"%s\" is not an object file: %s"), filename, |
| 1271 | bfd_errmsg (bfd_get_error ())); |
| 1272 | |
| 1273 | gettimeofday (&start_time, NULL); |
| 1274 | data_count = 0; |
| 1275 | |
| 1276 | interrupted = 0; |
| 1277 | prev_sigint = signal (SIGINT, gdb_cntrl_c); |
| 1278 | |
| 1279 | for (section = pbfd->sections; section; section = section->next) |
| 1280 | { |
| 1281 | if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) |
| 1282 | { |
| 1283 | bfd_vma section_address; |
| 1284 | bfd_size_type section_size; |
| 1285 | file_ptr fptr; |
| 1286 | int n; |
| 1287 | |
| 1288 | section_address = bfd_section_lma (pbfd, section); |
| 1289 | section_size = bfd_get_section_size (section); |
| 1290 | |
| 1291 | if (!mmu_on) |
| 1292 | { |
| 1293 | if ((section_address & 0xa0000000) == 0x80000000) |
| 1294 | section_address &= 0x7fffffff; |
| 1295 | } |
| 1296 | |
| 1297 | if (!quiet) |
| 1298 | printf_filtered ("[Loading section %s at 0x%lx (%d bytes)]\n", |
| 1299 | bfd_get_section_name (pbfd, section), |
| 1300 | (unsigned long) section_address, |
| 1301 | (int) section_size); |
| 1302 | |
| 1303 | fptr = 0; |
| 1304 | |
| 1305 | data_count += section_size; |
| 1306 | |
| 1307 | n = 0; |
| 1308 | while (section_size > 0) |
| 1309 | { |
| 1310 | char unsigned buf[0x1000 + 9]; |
| 1311 | int count; |
| 1312 | |
| 1313 | count = min (section_size, 0x1000); |
| 1314 | |
| 1315 | buf[0] = SDI_WRITE_MEMORY; |
| 1316 | store_long_parameter (buf + 1, section_address); |
| 1317 | store_long_parameter (buf + 5, count); |
| 1318 | |
| 1319 | bfd_get_section_contents (pbfd, section, buf + 9, fptr, count); |
| 1320 | if (send_data (buf, count + 9) <= 0) |
| 1321 | error (_("Error while downloading %s section."), |
| 1322 | bfd_get_section_name (pbfd, section)); |
| 1323 | |
| 1324 | if (!quiet) |
| 1325 | { |
| 1326 | printf_unfiltered ("."); |
| 1327 | if (n++ > 60) |
| 1328 | { |
| 1329 | printf_unfiltered ("\n"); |
| 1330 | n = 0; |
| 1331 | } |
| 1332 | gdb_flush (gdb_stdout); |
| 1333 | } |
| 1334 | |
| 1335 | section_address += count; |
| 1336 | fptr += count; |
| 1337 | section_size -= count; |
| 1338 | |
| 1339 | if (interrupted) |
| 1340 | break; |
| 1341 | } |
| 1342 | |
| 1343 | if (!quiet && !interrupted) |
| 1344 | { |
| 1345 | printf_unfiltered ("done.\n"); |
| 1346 | gdb_flush (gdb_stdout); |
| 1347 | } |
| 1348 | } |
| 1349 | |
| 1350 | if (interrupted) |
| 1351 | { |
| 1352 | printf_unfiltered ("Interrupted.\n"); |
| 1353 | break; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | interrupted = 0; |
| 1358 | signal (SIGINT, prev_sigint); |
| 1359 | |
| 1360 | gettimeofday (&end_time, NULL); |
| 1361 | |
| 1362 | /* Make the PC point at the start address. */ |
| 1363 | if (exec_bfd) |
| 1364 | regcache_write_pc (get_current_regcache (), |
| 1365 | bfd_get_start_address (exec_bfd)); |
| 1366 | |
| 1367 | inferior_ptid = null_ptid; /* No process now. */ |
| 1368 | delete_thread_silent (remote_m32r_ptid); |
| 1369 | |
| 1370 | /* This is necessary because many things were based on the PC at the time |
| 1371 | that we attached to the monitor, which is no longer valid now that we |
| 1372 | have loaded new code (and just changed the PC). Another way to do this |
| 1373 | might be to call normal_stop, except that the stack may not be valid, |
| 1374 | and things would get horribly confused... */ |
| 1375 | |
| 1376 | clear_symtab_users (0); |
| 1377 | |
| 1378 | if (!nostart) |
| 1379 | { |
| 1380 | entry = bfd_get_start_address (pbfd); |
| 1381 | |
| 1382 | if (!quiet) |
| 1383 | printf_unfiltered ("[Starting %s at 0x%lx]\n", filename, |
| 1384 | (unsigned long) entry); |
| 1385 | } |
| 1386 | |
| 1387 | print_transfer_performance (gdb_stdout, data_count, 0, &start_time, |
| 1388 | &end_time); |
| 1389 | |
| 1390 | do_cleanups (old_chain); |
| 1391 | } |
| 1392 | |
| 1393 | static void |
| 1394 | m32r_stop (ptid_t ptid) |
| 1395 | { |
| 1396 | if (remote_debug) |
| 1397 | fprintf_unfiltered (gdb_stdlog, "m32r_stop()\n"); |
| 1398 | |
| 1399 | send_cmd (SDI_STOP_CPU); |
| 1400 | |
| 1401 | return; |
| 1402 | } |
| 1403 | |
| 1404 | |
| 1405 | /* Tell whether this target can support a hardware breakpoint. CNT |
| 1406 | is the number of hardware breakpoints already installed. This |
| 1407 | implements the target_can_use_hardware_watchpoint macro. */ |
| 1408 | |
| 1409 | static int |
| 1410 | m32r_can_use_hw_watchpoint (int type, int cnt, int othertype) |
| 1411 | { |
| 1412 | return sdi_desc != NULL && cnt < max_access_breaks; |
| 1413 | } |
| 1414 | |
| 1415 | /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0 |
| 1416 | for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write |
| 1417 | watchpoint. */ |
| 1418 | |
| 1419 | static int |
| 1420 | m32r_insert_watchpoint (CORE_ADDR addr, int len, int type, |
| 1421 | struct expression *cond) |
| 1422 | { |
| 1423 | int i; |
| 1424 | |
| 1425 | if (remote_debug) |
| 1426 | fprintf_unfiltered (gdb_stdlog, "m32r_insert_watchpoint(%s,%d,%d)\n", |
| 1427 | paddress (target_gdbarch, addr), len, type); |
| 1428 | |
| 1429 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) |
| 1430 | { |
| 1431 | if (ab_address[i] == 0x00000000) |
| 1432 | { |
| 1433 | ab_address[i] = addr; |
| 1434 | ab_size[i] = len; |
| 1435 | ab_type[i] = type; |
| 1436 | return 0; |
| 1437 | } |
| 1438 | } |
| 1439 | |
| 1440 | error (_("Too many watchpoints")); |
| 1441 | return 1; |
| 1442 | } |
| 1443 | |
| 1444 | static int |
| 1445 | m32r_remove_watchpoint (CORE_ADDR addr, int len, int type, |
| 1446 | struct expression *cond) |
| 1447 | { |
| 1448 | int i; |
| 1449 | |
| 1450 | if (remote_debug) |
| 1451 | fprintf_unfiltered (gdb_stdlog, "m32r_remove_watchpoint(%s,%d,%d)\n", |
| 1452 | paddress (target_gdbarch, addr), len, type); |
| 1453 | |
| 1454 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) |
| 1455 | { |
| 1456 | if (ab_address[i] == addr) |
| 1457 | { |
| 1458 | ab_address[i] = 0x00000000; |
| 1459 | break; |
| 1460 | } |
| 1461 | } |
| 1462 | |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
| 1466 | static int |
| 1467 | m32r_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) |
| 1468 | { |
| 1469 | int rc = 0; |
| 1470 | |
| 1471 | if (hit_watchpoint_addr != 0x00000000) |
| 1472 | { |
| 1473 | *addr_p = hit_watchpoint_addr; |
| 1474 | rc = 1; |
| 1475 | } |
| 1476 | return rc; |
| 1477 | } |
| 1478 | |
| 1479 | static int |
| 1480 | m32r_stopped_by_watchpoint (void) |
| 1481 | { |
| 1482 | CORE_ADDR addr; |
| 1483 | |
| 1484 | return m32r_stopped_data_address (¤t_target, &addr); |
| 1485 | } |
| 1486 | |
| 1487 | /* Check to see if a thread is still alive. */ |
| 1488 | |
| 1489 | static int |
| 1490 | m32r_thread_alive (struct target_ops *ops, ptid_t ptid) |
| 1491 | { |
| 1492 | if (ptid_equal (ptid, remote_m32r_ptid)) |
| 1493 | /* The main task is always alive. */ |
| 1494 | return 1; |
| 1495 | |
| 1496 | return 0; |
| 1497 | } |
| 1498 | |
| 1499 | /* Convert a thread ID to a string. Returns the string in a static |
| 1500 | buffer. */ |
| 1501 | |
| 1502 | static char * |
| 1503 | m32r_pid_to_str (struct target_ops *ops, ptid_t ptid) |
| 1504 | { |
| 1505 | static char buf[64]; |
| 1506 | |
| 1507 | if (ptid_equal (remote_m32r_ptid, ptid)) |
| 1508 | { |
| 1509 | xsnprintf (buf, sizeof buf, "Thread <main>"); |
| 1510 | return buf; |
| 1511 | } |
| 1512 | |
| 1513 | return normal_pid_to_str (ptid); |
| 1514 | } |
| 1515 | |
| 1516 | static void |
| 1517 | sdireset_command (char *args, int from_tty) |
| 1518 | { |
| 1519 | if (remote_debug) |
| 1520 | fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n"); |
| 1521 | |
| 1522 | send_cmd (SDI_OPEN); |
| 1523 | |
| 1524 | inferior_ptid = null_ptid; |
| 1525 | delete_thread_silent (remote_m32r_ptid); |
| 1526 | } |
| 1527 | |
| 1528 | |
| 1529 | static void |
| 1530 | sdistatus_command (char *args, int from_tty) |
| 1531 | { |
| 1532 | unsigned char buf[4096]; |
| 1533 | int i, c; |
| 1534 | |
| 1535 | if (remote_debug) |
| 1536 | fprintf_unfiltered (gdb_stdlog, "m32r_sdireset()\n"); |
| 1537 | |
| 1538 | if (!sdi_desc) |
| 1539 | return; |
| 1540 | |
| 1541 | send_cmd (SDI_STATUS); |
| 1542 | for (i = 0; i < 4096; i++) |
| 1543 | { |
| 1544 | c = serial_readchar (sdi_desc, SDI_TIMEOUT); |
| 1545 | if (c < 0) |
| 1546 | return; |
| 1547 | buf[i] = c; |
| 1548 | if (c == 0) |
| 1549 | break; |
| 1550 | } |
| 1551 | |
| 1552 | printf_filtered ("%s", buf); |
| 1553 | } |
| 1554 | |
| 1555 | |
| 1556 | static void |
| 1557 | debug_chaos_command (char *args, int from_tty) |
| 1558 | { |
| 1559 | unsigned char buf[3]; |
| 1560 | |
| 1561 | buf[0] = SDI_SET_ATTR; |
| 1562 | buf[1] = SDI_ATTR_CACHE; |
| 1563 | buf[2] = SDI_CACHE_TYPE_CHAOS; |
| 1564 | send_data (buf, 3); |
| 1565 | } |
| 1566 | |
| 1567 | |
| 1568 | static void |
| 1569 | use_debug_dma_command (char *args, int from_tty) |
| 1570 | { |
| 1571 | unsigned char buf[3]; |
| 1572 | |
| 1573 | buf[0] = SDI_SET_ATTR; |
| 1574 | buf[1] = SDI_ATTR_MEM_ACCESS; |
| 1575 | buf[2] = SDI_MEM_ACCESS_DEBUG_DMA; |
| 1576 | send_data (buf, 3); |
| 1577 | } |
| 1578 | |
| 1579 | static void |
| 1580 | use_mon_code_command (char *args, int from_tty) |
| 1581 | { |
| 1582 | unsigned char buf[3]; |
| 1583 | |
| 1584 | buf[0] = SDI_SET_ATTR; |
| 1585 | buf[1] = SDI_ATTR_MEM_ACCESS; |
| 1586 | buf[2] = SDI_MEM_ACCESS_MON_CODE; |
| 1587 | send_data (buf, 3); |
| 1588 | } |
| 1589 | |
| 1590 | |
| 1591 | static void |
| 1592 | use_ib_breakpoints_command (char *args, int from_tty) |
| 1593 | { |
| 1594 | use_ib_breakpoints = 1; |
| 1595 | } |
| 1596 | |
| 1597 | static void |
| 1598 | use_dbt_breakpoints_command (char *args, int from_tty) |
| 1599 | { |
| 1600 | use_ib_breakpoints = 0; |
| 1601 | } |
| 1602 | |
| 1603 | static int |
| 1604 | m32r_return_one (struct target_ops *target) |
| 1605 | { |
| 1606 | return 1; |
| 1607 | } |
| 1608 | |
| 1609 | /* Implementation of the to_has_execution method. */ |
| 1610 | |
| 1611 | static int |
| 1612 | m32r_has_execution (struct target_ops *target, ptid_t the_ptid) |
| 1613 | { |
| 1614 | return 1; |
| 1615 | } |
| 1616 | |
| 1617 | /* Define the target subroutine names. */ |
| 1618 | |
| 1619 | struct target_ops m32r_ops; |
| 1620 | |
| 1621 | static void |
| 1622 | init_m32r_ops (void) |
| 1623 | { |
| 1624 | m32r_ops.to_shortname = "m32rsdi"; |
| 1625 | m32r_ops.to_longname = "Remote M32R debugging over SDI interface"; |
| 1626 | m32r_ops.to_doc = "Use an M32R board using SDI debugging protocol."; |
| 1627 | m32r_ops.to_open = m32r_open; |
| 1628 | m32r_ops.to_close = m32r_close; |
| 1629 | m32r_ops.to_detach = m32r_detach; |
| 1630 | m32r_ops.to_resume = m32r_resume; |
| 1631 | m32r_ops.to_wait = m32r_wait; |
| 1632 | m32r_ops.to_fetch_registers = m32r_fetch_register; |
| 1633 | m32r_ops.to_store_registers = m32r_store_register; |
| 1634 | m32r_ops.to_prepare_to_store = m32r_prepare_to_store; |
| 1635 | m32r_ops.deprecated_xfer_memory = m32r_xfer_memory; |
| 1636 | m32r_ops.to_files_info = m32r_files_info; |
| 1637 | m32r_ops.to_insert_breakpoint = m32r_insert_breakpoint; |
| 1638 | m32r_ops.to_remove_breakpoint = m32r_remove_breakpoint; |
| 1639 | m32r_ops.to_can_use_hw_breakpoint = m32r_can_use_hw_watchpoint; |
| 1640 | m32r_ops.to_insert_watchpoint = m32r_insert_watchpoint; |
| 1641 | m32r_ops.to_remove_watchpoint = m32r_remove_watchpoint; |
| 1642 | m32r_ops.to_stopped_by_watchpoint = m32r_stopped_by_watchpoint; |
| 1643 | m32r_ops.to_stopped_data_address = m32r_stopped_data_address; |
| 1644 | m32r_ops.to_kill = m32r_kill; |
| 1645 | m32r_ops.to_load = m32r_load; |
| 1646 | m32r_ops.to_create_inferior = m32r_create_inferior; |
| 1647 | m32r_ops.to_mourn_inferior = m32r_mourn_inferior; |
| 1648 | m32r_ops.to_stop = m32r_stop; |
| 1649 | m32r_ops.to_log_command = serial_log_command; |
| 1650 | m32r_ops.to_thread_alive = m32r_thread_alive; |
| 1651 | m32r_ops.to_pid_to_str = m32r_pid_to_str; |
| 1652 | m32r_ops.to_stratum = process_stratum; |
| 1653 | m32r_ops.to_has_all_memory = m32r_return_one; |
| 1654 | m32r_ops.to_has_memory = m32r_return_one; |
| 1655 | m32r_ops.to_has_stack = m32r_return_one; |
| 1656 | m32r_ops.to_has_registers = m32r_return_one; |
| 1657 | m32r_ops.to_has_execution = m32r_has_execution; |
| 1658 | m32r_ops.to_magic = OPS_MAGIC; |
| 1659 | }; |
| 1660 | |
| 1661 | |
| 1662 | extern initialize_file_ftype _initialize_remote_m32r; |
| 1663 | |
| 1664 | void |
| 1665 | _initialize_remote_m32r (void) |
| 1666 | { |
| 1667 | int i; |
| 1668 | |
| 1669 | init_m32r_ops (); |
| 1670 | |
| 1671 | /* Initialize breakpoints. */ |
| 1672 | for (i = 0; i < MAX_BREAKPOINTS; i++) |
| 1673 | bp_address[i] = 0xffffffff; |
| 1674 | |
| 1675 | /* Initialize access breaks. */ |
| 1676 | for (i = 0; i < MAX_ACCESS_BREAKS; i++) |
| 1677 | ab_address[i] = 0x00000000; |
| 1678 | |
| 1679 | add_target (&m32r_ops); |
| 1680 | |
| 1681 | add_com ("sdireset", class_obscure, sdireset_command, |
| 1682 | _("Reset SDI connection.")); |
| 1683 | |
| 1684 | add_com ("sdistatus", class_obscure, sdistatus_command, |
| 1685 | _("Show status of SDI connection.")); |
| 1686 | |
| 1687 | add_com ("debug_chaos", class_obscure, debug_chaos_command, |
| 1688 | _("Debug M32R/Chaos.")); |
| 1689 | |
| 1690 | add_com ("use_debug_dma", class_obscure, use_debug_dma_command, |
| 1691 | _("Use debug DMA mem access.")); |
| 1692 | add_com ("use_mon_code", class_obscure, use_mon_code_command, |
| 1693 | _("Use mon code mem access.")); |
| 1694 | |
| 1695 | add_com ("use_ib_break", class_obscure, use_ib_breakpoints_command, |
| 1696 | _("Set breakpoints by IB break.")); |
| 1697 | add_com ("use_dbt_break", class_obscure, use_dbt_breakpoints_command, |
| 1698 | _("Set breakpoints by dbt.")); |
| 1699 | |
| 1700 | /* Yes, 42000 is arbitrary. The only sense out of it, is that it |
| 1701 | isn't 0. */ |
| 1702 | remote_m32r_ptid = ptid_build (42000, 0, 42000); |
| 1703 | } |