1 /* Interface between GDB and target environments, including files and processes 2 3 Copyright (C) 1990-2013 Free Software Foundation, Inc. 4 5 Contributed by Cygnus Support. Written by John Gilmore. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 21 22 #if !defined (TARGET_H) 23 #define TARGET_H 24 25 struct objfile; 26 struct ui_file; 27 struct mem_attrib; 28 struct target_ops; 29 struct bp_location; 30 struct bp_target_info; 31 struct regcache; 32 struct target_section_table; 33 struct trace_state_variable; 34 struct trace_status; 35 struct uploaded_tsv; 36 struct uploaded_tp; 37 struct static_tracepoint_marker; 38 struct traceframe_info; 39 struct expression; 40 41 /* This include file defines the interface between the main part 42 of the debugger, and the part which is target-specific, or 43 specific to the communications interface between us and the 44 target. 45 46 A TARGET is an interface between the debugger and a particular 47 kind of file or process. Targets can be STACKED in STRATA, 48 so that more than one target can potentially respond to a request. 49 In particular, memory accesses will walk down the stack of targets 50 until they find a target that is interested in handling that particular 51 address. STRATA are artificial boundaries on the stack, within 52 which particular kinds of targets live. Strata exist so that 53 people don't get confused by pushing e.g. a process target and then 54 a file target, and wondering why they can't see the current values 55 of variables any more (the file target is handling them and they 56 never get to the process target). So when you push a file target, 57 it goes into the file stratum, which is always below the process 58 stratum. */ 59 60 #include "bfd.h" 61 #include "symtab.h" 62 #include "memattr.h" 63 #include "vec.h" 64 #include "gdb_signals.h" 65 #include "btrace.h" 66 67 enum strata 68 { 69 dummy_stratum, /* The lowest of the low */ 70 file_stratum, /* Executable files, etc */ 71 process_stratum, /* Executing processes or core dump files */ 72 thread_stratum, /* Executing threads */ 73 record_stratum, /* Support record debugging */ 74 arch_stratum /* Architecture overrides */ 75 }; 76 77 enum thread_control_capabilities 78 { 79 tc_none = 0, /* Default: can't control thread execution. */ 80 tc_schedlock = 1, /* Can lock the thread scheduler. */ 81 }; 82 83 /* Stuff for target_wait. */ 84 85 /* Generally, what has the program done? */ 86 enum target_waitkind 87 { 88 /* The program has exited. The exit status is in value.integer. */ 89 TARGET_WAITKIND_EXITED, 90 91 /* The program has stopped with a signal. Which signal is in 92 value.sig. */ 93 TARGET_WAITKIND_STOPPED, 94 95 /* The program has terminated with a signal. Which signal is in 96 value.sig. */ 97 TARGET_WAITKIND_SIGNALLED, 98 99 /* The program is letting us know that it dynamically loaded something 100 (e.g. it called load(2) on AIX). */ 101 TARGET_WAITKIND_LOADED, 102 103 /* The program has forked. A "related" process' PTID is in 104 value.related_pid. I.e., if the child forks, value.related_pid 105 is the parent's ID. */ 106 107 TARGET_WAITKIND_FORKED, 108 109 /* The program has vforked. A "related" process's PTID is in 110 value.related_pid. */ 111 112 TARGET_WAITKIND_VFORKED, 113 114 /* The program has exec'ed a new executable file. The new file's 115 pathname is pointed to by value.execd_pathname. */ 116 117 TARGET_WAITKIND_EXECD, 118 119 /* The program had previously vforked, and now the child is done 120 with the shared memory region, because it exec'ed or exited. 121 Note that the event is reported to the vfork parent. This is 122 only used if GDB did not stay attached to the vfork child, 123 otherwise, a TARGET_WAITKIND_EXECD or 124 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child 125 has the same effect. */ 126 TARGET_WAITKIND_VFORK_DONE, 127 128 /* The program has entered or returned from a system call. On 129 HP-UX, this is used in the hardware watchpoint implementation. 130 The syscall's unique integer ID number is in value.syscall_id. */ 131 132 TARGET_WAITKIND_SYSCALL_ENTRY, 133 TARGET_WAITKIND_SYSCALL_RETURN, 134 135 /* Nothing happened, but we stopped anyway. This perhaps should be handled 136 within target_wait, but I'm not sure target_wait should be resuming the 137 inferior. */ 138 TARGET_WAITKIND_SPURIOUS, 139 140 /* An event has occured, but we should wait again. 141 Remote_async_wait() returns this when there is an event 142 on the inferior, but the rest of the world is not interested in 143 it. The inferior has not stopped, but has just sent some output 144 to the console, for instance. In this case, we want to go back 145 to the event loop and wait there for another event from the 146 inferior, rather than being stuck in the remote_async_wait() 147 function. sThis way the event loop is responsive to other events, 148 like for instance the user typing. */ 149 TARGET_WAITKIND_IGNORE, 150 151 /* The target has run out of history information, 152 and cannot run backward any further. */ 153 TARGET_WAITKIND_NO_HISTORY, 154 155 /* There are no resumed children left in the program. */ 156 TARGET_WAITKIND_NO_RESUMED 157 }; 158 159 struct target_waitstatus 160 { 161 enum target_waitkind kind; 162 163 /* Forked child pid, execd pathname, exit status, signal number or 164 syscall number. */ 165 union 166 { 167 int integer; 168 enum gdb_signal sig; 169 ptid_t related_pid; 170 char *execd_pathname; 171 int syscall_number; 172 } 173 value; 174 }; 175 176 /* Options that can be passed to target_wait. */ 177 178 /* Return immediately if there's no event already queued. If this 179 options is not requested, target_wait blocks waiting for an 180 event. */ 181 #define TARGET_WNOHANG 1 182 183 /* The structure below stores information about a system call. 184 It is basically used in the "catch syscall" command, and in 185 every function that gives information about a system call. 186 187 It's also good to mention that its fields represent everything 188 that we currently know about a syscall in GDB. */ 189 struct syscall 190 { 191 /* The syscall number. */ 192 int number; 193 194 /* The syscall name. */ 195 const char *name; 196 }; 197 198 /* Return a pretty printed form of target_waitstatus. 199 Space for the result is malloc'd, caller must free. */ 200 extern char *target_waitstatus_to_string (const struct target_waitstatus *); 201 202 /* Return a pretty printed form of TARGET_OPTIONS. 203 Space for the result is malloc'd, caller must free. */ 204 extern char *target_options_to_string (int target_options); 205 206 /* Possible types of events that the inferior handler will have to 207 deal with. */ 208 enum inferior_event_type 209 { 210 /* Process a normal inferior event which will result in target_wait 211 being called. */ 212 INF_REG_EVENT, 213 /* We are called because a timer went off. */ 214 INF_TIMER, 215 /* We are called to do stuff after the inferior stops. */ 216 INF_EXEC_COMPLETE, 217 /* We are called to do some stuff after the inferior stops, but we 218 are expected to reenter the proceed() and 219 handle_inferior_event() functions. This is used only in case of 220 'step n' like commands. */ 221 INF_EXEC_CONTINUE 222 }; 223 224 /* Target objects which can be transfered using target_read, 225 target_write, et cetera. */ 226 227 enum target_object 228 { 229 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ 230 TARGET_OBJECT_AVR, 231 /* SPU target specific transfer. See "spu-tdep.c". */ 232 TARGET_OBJECT_SPU, 233 /* Transfer up-to LEN bytes of memory starting at OFFSET. */ 234 TARGET_OBJECT_MEMORY, 235 /* Memory, avoiding GDB's data cache and trusting the executable. 236 Target implementations of to_xfer_partial never need to handle 237 this object, and most callers should not use it. */ 238 TARGET_OBJECT_RAW_MEMORY, 239 /* Memory known to be part of the target's stack. This is cached even 240 if it is not in a region marked as such, since it is known to be 241 "normal" RAM. */ 242 TARGET_OBJECT_STACK_MEMORY, 243 /* Kernel Unwind Table. See "ia64-tdep.c". */ 244 TARGET_OBJECT_UNWIND_TABLE, 245 /* Transfer auxilliary vector. */ 246 TARGET_OBJECT_AUXV, 247 /* StackGhost cookie. See "sparc-tdep.c". */ 248 TARGET_OBJECT_WCOOKIE, 249 /* Target memory map in XML format. */ 250 TARGET_OBJECT_MEMORY_MAP, 251 /* Flash memory. This object can be used to write contents to 252 a previously erased flash memory. Using it without erasing 253 flash can have unexpected results. Addresses are physical 254 address on target, and not relative to flash start. */ 255 TARGET_OBJECT_FLASH, 256 /* Available target-specific features, e.g. registers and coprocessors. 257 See "target-descriptions.c". ANNEX should never be empty. */ 258 TARGET_OBJECT_AVAILABLE_FEATURES, 259 /* Currently loaded libraries, in XML format. */ 260 TARGET_OBJECT_LIBRARIES, 261 /* Currently loaded libraries specific for SVR4 systems, in XML format. */ 262 TARGET_OBJECT_LIBRARIES_SVR4, 263 /* Get OS specific data. The ANNEX specifies the type (running 264 processes, etc.). The data being transfered is expected to follow 265 the DTD specified in features/osdata.dtd. */ 266 TARGET_OBJECT_OSDATA, 267 /* Extra signal info. Usually the contents of `siginfo_t' on unix 268 platforms. */ 269 TARGET_OBJECT_SIGNAL_INFO, 270 /* The list of threads that are being debugged. */ 271 TARGET_OBJECT_THREADS, 272 /* Collected static trace data. */ 273 TARGET_OBJECT_STATIC_TRACE_DATA, 274 /* The HP-UX registers (those that can be obtained or modified by using 275 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */ 276 TARGET_OBJECT_HPUX_UREGS, 277 /* The HP-UX shared library linkage pointer. ANNEX should be a string 278 image of the code address whose linkage pointer we are looking for. 279 280 The size of the data transfered is always 8 bytes (the size of an 281 address on ia64). */ 282 TARGET_OBJECT_HPUX_SOLIB_GOT, 283 /* Traceframe info, in XML format. */ 284 TARGET_OBJECT_TRACEFRAME_INFO, 285 /* Load maps for FDPIC systems. */ 286 TARGET_OBJECT_FDPIC, 287 /* Darwin dynamic linker info data. */ 288 TARGET_OBJECT_DARWIN_DYLD_INFO, 289 /* OpenVMS Unwind Information Block. */ 290 TARGET_OBJECT_OPENVMS_UIB, 291 /* Branch trace data, in XML format. */ 292 TARGET_OBJECT_BTRACE 293 /* Possible future objects: TARGET_OBJECT_FILE, ... */ 294 }; 295 296 /* Enumeration of the kinds of traceframe searches that a target may 297 be able to perform. */ 298 299 enum trace_find_type 300 { 301 tfind_number, 302 tfind_pc, 303 tfind_tp, 304 tfind_range, 305 tfind_outside, 306 }; 307 308 typedef struct static_tracepoint_marker *static_tracepoint_marker_p; 309 DEF_VEC_P(static_tracepoint_marker_p); 310 311 /* Request that OPS transfer up to LEN 8-bit bytes of the target's 312 OBJECT. The OFFSET, for a seekable object, specifies the 313 starting point. The ANNEX can be used to provide additional 314 data-specific information to the target. 315 316 Return the number of bytes actually transfered, or -1 if the 317 transfer is not supported or otherwise fails. Return of a positive 318 value less than LEN indicates that no further transfer is possible. 319 Unlike the raw to_xfer_partial interface, callers of these 320 functions do not need to retry partial transfers. */ 321 322 extern LONGEST target_read (struct target_ops *ops, 323 enum target_object object, 324 const char *annex, gdb_byte *buf, 325 ULONGEST offset, LONGEST len); 326 327 struct memory_read_result 328 { 329 /* First address that was read. */ 330 ULONGEST begin; 331 /* Past-the-end address. */ 332 ULONGEST end; 333 /* The data. */ 334 gdb_byte *data; 335 }; 336 typedef struct memory_read_result memory_read_result_s; 337 DEF_VEC_O(memory_read_result_s); 338 339 extern void free_memory_read_result_vector (void *); 340 341 extern VEC(memory_read_result_s)* read_memory_robust (struct target_ops *ops, 342 ULONGEST offset, 343 LONGEST len); 344 345 extern LONGEST target_write (struct target_ops *ops, 346 enum target_object object, 347 const char *annex, const gdb_byte *buf, 348 ULONGEST offset, LONGEST len); 349 350 /* Similar to target_write, except that it also calls PROGRESS with 351 the number of bytes written and the opaque BATON after every 352 successful partial write (and before the first write). This is 353 useful for progress reporting and user interaction while writing 354 data. To abort the transfer, the progress callback can throw an 355 exception. */ 356 357 LONGEST target_write_with_progress (struct target_ops *ops, 358 enum target_object object, 359 const char *annex, const gdb_byte *buf, 360 ULONGEST offset, LONGEST len, 361 void (*progress) (ULONGEST, void *), 362 void *baton); 363 364 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will 365 be read using OPS. The return value will be -1 if the transfer 366 fails or is not supported; 0 if the object is empty; or the length 367 of the object otherwise. If a positive value is returned, a 368 sufficiently large buffer will be allocated using xmalloc and 369 returned in *BUF_P containing the contents of the object. 370 371 This method should be used for objects sufficiently small to store 372 in a single xmalloc'd buffer, when no fixed bound on the object's 373 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY 374 through this function. */ 375 376 extern LONGEST target_read_alloc (struct target_ops *ops, 377 enum target_object object, 378 const char *annex, gdb_byte **buf_p); 379 380 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and 381 returned as a string, allocated using xmalloc. If an error occurs 382 or the transfer is unsupported, NULL is returned. Empty objects 383 are returned as allocated but empty strings. A warning is issued 384 if the result contains any embedded NUL bytes. */ 385 386 extern char *target_read_stralloc (struct target_ops *ops, 387 enum target_object object, 388 const char *annex); 389 390 /* Wrappers to target read/write that perform memory transfers. They 391 throw an error if the memory transfer fails. 392 393 NOTE: cagney/2003-10-23: The naming schema is lifted from 394 "frame.h". The parameter order is lifted from get_frame_memory, 395 which in turn lifted it from read_memory. */ 396 397 extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, 398 gdb_byte *buf, LONGEST len); 399 extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, 400 CORE_ADDR addr, int len, 401 enum bfd_endian byte_order); 402 403 struct thread_info; /* fwd decl for parameter list below: */ 404 405 struct target_ops 406 { 407 struct target_ops *beneath; /* To the target under this one. */ 408 char *to_shortname; /* Name this target type */ 409 char *to_longname; /* Name for printing */ 410 char *to_doc; /* Documentation. Does not include trailing 411 newline, and starts with a one-line descrip- 412 tion (probably similar to to_longname). */ 413 /* Per-target scratch pad. */ 414 void *to_data; 415 /* The open routine takes the rest of the parameters from the 416 command, and (if successful) pushes a new target onto the 417 stack. Targets should supply this routine, if only to provide 418 an error message. */ 419 void (*to_open) (char *, int); 420 /* Old targets with a static target vector provide "to_close". 421 New re-entrant targets provide "to_xclose" and that is expected 422 to xfree everything (including the "struct target_ops"). */ 423 void (*to_xclose) (struct target_ops *targ, int quitting); 424 void (*to_close) (int); 425 void (*to_attach) (struct target_ops *ops, char *, int); 426 void (*to_post_attach) (int); 427 void (*to_detach) (struct target_ops *ops, char *, int); 428 void (*to_disconnect) (struct target_ops *, char *, int); 429 void (*to_resume) (struct target_ops *, ptid_t, int, enum gdb_signal); 430 ptid_t (*to_wait) (struct target_ops *, 431 ptid_t, struct target_waitstatus *, int); 432 void (*to_fetch_registers) (struct target_ops *, struct regcache *, int); 433 void (*to_store_registers) (struct target_ops *, struct regcache *, int); 434 void (*to_prepare_to_store) (struct regcache *); 435 436 /* Transfer LEN bytes of memory between GDB address MYADDR and 437 target address MEMADDR. If WRITE, transfer them to the target, else 438 transfer them from the target. TARGET is the target from which we 439 get this function. 440 441 Return value, N, is one of the following: 442 443 0 means that we can't handle this. If errno has been set, it is the 444 error which prevented us from doing it (FIXME: What about bfd_error?). 445 446 positive (call it N) means that we have transferred N bytes 447 starting at MEMADDR. We might be able to handle more bytes 448 beyond this length, but no promises. 449 450 negative (call its absolute value N) means that we cannot 451 transfer right at MEMADDR, but we could transfer at least 452 something at MEMADDR + N. 453 454 NOTE: cagney/2004-10-01: This has been entirely superseeded by 455 to_xfer_partial and inferior inheritance. */ 456 457 int (*deprecated_xfer_memory) (CORE_ADDR memaddr, gdb_byte *myaddr, 458 int len, int write, 459 struct mem_attrib *attrib, 460 struct target_ops *target); 461 462 void (*to_files_info) (struct target_ops *); 463 int (*to_insert_breakpoint) (struct gdbarch *, struct bp_target_info *); 464 int (*to_remove_breakpoint) (struct gdbarch *, struct bp_target_info *); 465 int (*to_can_use_hw_breakpoint) (int, int, int); 466 int (*to_ranged_break_num_registers) (struct target_ops *); 467 int (*to_insert_hw_breakpoint) (struct gdbarch *, struct bp_target_info *); 468 int (*to_remove_hw_breakpoint) (struct gdbarch *, struct bp_target_info *); 469 470 /* Documentation of what the two routines below are expected to do is 471 provided with the corresponding target_* macros. */ 472 int (*to_remove_watchpoint) (CORE_ADDR, int, int, struct expression *); 473 int (*to_insert_watchpoint) (CORE_ADDR, int, int, struct expression *); 474 475 int (*to_insert_mask_watchpoint) (struct target_ops *, 476 CORE_ADDR, CORE_ADDR, int); 477 int (*to_remove_mask_watchpoint) (struct target_ops *, 478 CORE_ADDR, CORE_ADDR, int); 479 int (*to_stopped_by_watchpoint) (void); 480 int to_have_steppable_watchpoint; 481 int to_have_continuable_watchpoint; 482 int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *); 483 int (*to_watchpoint_addr_within_range) (struct target_ops *, 484 CORE_ADDR, CORE_ADDR, int); 485 486 /* Documentation of this routine is provided with the corresponding 487 target_* macro. */ 488 int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int); 489 490 int (*to_can_accel_watchpoint_condition) (CORE_ADDR, int, int, 491 struct expression *); 492 int (*to_masked_watch_num_registers) (struct target_ops *, 493 CORE_ADDR, CORE_ADDR); 494 void (*to_terminal_init) (void); 495 void (*to_terminal_inferior) (void); 496 void (*to_terminal_ours_for_output) (void); 497 void (*to_terminal_ours) (void); 498 void (*to_terminal_save_ours) (void); 499 void (*to_terminal_info) (char *, int); 500 void (*to_kill) (struct target_ops *); 501 void (*to_load) (char *, int); 502 void (*to_create_inferior) (struct target_ops *, 503 char *, char *, char **, int); 504 void (*to_post_startup_inferior) (ptid_t); 505 int (*to_insert_fork_catchpoint) (int); 506 int (*to_remove_fork_catchpoint) (int); 507 int (*to_insert_vfork_catchpoint) (int); 508 int (*to_remove_vfork_catchpoint) (int); 509 int (*to_follow_fork) (struct target_ops *, int); 510 int (*to_insert_exec_catchpoint) (int); 511 int (*to_remove_exec_catchpoint) (int); 512 int (*to_set_syscall_catchpoint) (int, int, int, int, int *); 513 int (*to_has_exited) (int, int, int *); 514 void (*to_mourn_inferior) (struct target_ops *); 515 int (*to_can_run) (void); 516 517 /* Documentation of this routine is provided with the corresponding 518 target_* macro. */ 519 void (*to_pass_signals) (int, unsigned char *); 520 521 /* Documentation of this routine is provided with the 522 corresponding target_* function. */ 523 void (*to_program_signals) (int, unsigned char *); 524 525 int (*to_thread_alive) (struct target_ops *, ptid_t ptid); 526 void (*to_find_new_threads) (struct target_ops *); 527 char *(*to_pid_to_str) (struct target_ops *, ptid_t); 528 char *(*to_extra_thread_info) (struct thread_info *); 529 char *(*to_thread_name) (struct thread_info *); 530 void (*to_stop) (ptid_t); 531 void (*to_rcmd) (char *command, struct ui_file *output); 532 char *(*to_pid_to_exec_file) (int pid); 533 void (*to_log_command) (const char *); 534 struct target_section_table *(*to_get_section_table) (struct target_ops *); 535 enum strata to_stratum; 536 int (*to_has_all_memory) (struct target_ops *); 537 int (*to_has_memory) (struct target_ops *); 538 int (*to_has_stack) (struct target_ops *); 539 int (*to_has_registers) (struct target_ops *); 540 int (*to_has_execution) (struct target_ops *, ptid_t); 541 int to_has_thread_control; /* control thread execution */ 542 int to_attach_no_wait; 543 /* ASYNC target controls */ 544 int (*to_can_async_p) (void); 545 int (*to_is_async_p) (void); 546 void (*to_async) (void (*) (enum inferior_event_type, void *), void *); 547 int (*to_supports_non_stop) (void); 548 /* find_memory_regions support method for gcore */ 549 int (*to_find_memory_regions) (find_memory_region_ftype func, void *data); 550 /* make_corefile_notes support method for gcore */ 551 char * (*to_make_corefile_notes) (bfd *, int *); 552 /* get_bookmark support method for bookmarks */ 553 gdb_byte * (*to_get_bookmark) (char *, int); 554 /* goto_bookmark support method for bookmarks */ 555 void (*to_goto_bookmark) (gdb_byte *, int); 556 /* Return the thread-local address at OFFSET in the 557 thread-local storage for the thread PTID and the shared library 558 or executable file given by OBJFILE. If that block of 559 thread-local storage hasn't been allocated yet, this function 560 may return an error. */ 561 CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops, 562 ptid_t ptid, 563 CORE_ADDR load_module_addr, 564 CORE_ADDR offset); 565 566 /* Request that OPS transfer up to LEN 8-bit bytes of the target's 567 OBJECT. The OFFSET, for a seekable object, specifies the 568 starting point. The ANNEX can be used to provide additional 569 data-specific information to the target. 570 571 Return the number of bytes actually transfered, zero when no 572 further transfer is possible, and -1 when the transfer is not 573 supported. Return of a positive value smaller than LEN does 574 not indicate the end of the object, only the end of the 575 transfer; higher level code should continue transferring if 576 desired. This is handled in target.c. 577 578 The interface does not support a "retry" mechanism. Instead it 579 assumes that at least one byte will be transfered on each 580 successful call. 581 582 NOTE: cagney/2003-10-17: The current interface can lead to 583 fragmented transfers. Lower target levels should not implement 584 hacks, such as enlarging the transfer, in an attempt to 585 compensate for this. Instead, the target stack should be 586 extended so that it implements supply/collect methods and a 587 look-aside object cache. With that available, the lowest 588 target can safely and freely "push" data up the stack. 589 590 See target_read and target_write for more information. One, 591 and only one, of readbuf or writebuf must be non-NULL. */ 592 593 LONGEST (*to_xfer_partial) (struct target_ops *ops, 594 enum target_object object, const char *annex, 595 gdb_byte *readbuf, const gdb_byte *writebuf, 596 ULONGEST offset, LONGEST len); 597 598 /* Returns the memory map for the target. A return value of NULL 599 means that no memory map is available. If a memory address 600 does not fall within any returned regions, it's assumed to be 601 RAM. The returned memory regions should not overlap. 602 603 The order of regions does not matter; target_memory_map will 604 sort regions by starting address. For that reason, this 605 function should not be called directly except via 606 target_memory_map. 607 608 This method should not cache data; if the memory map could 609 change unexpectedly, it should be invalidated, and higher 610 layers will re-fetch it. */ 611 VEC(mem_region_s) *(*to_memory_map) (struct target_ops *); 612 613 /* Erases the region of flash memory starting at ADDRESS, of 614 length LENGTH. 615 616 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned 617 on flash block boundaries, as reported by 'to_memory_map'. */ 618 void (*to_flash_erase) (struct target_ops *, 619 ULONGEST address, LONGEST length); 620 621 /* Finishes a flash memory write sequence. After this operation 622 all flash memory should be available for writing and the result 623 of reading from areas written by 'to_flash_write' should be 624 equal to what was written. */ 625 void (*to_flash_done) (struct target_ops *); 626 627 /* Describe the architecture-specific features of this target. 628 Returns the description found, or NULL if no description 629 was available. */ 630 const struct target_desc *(*to_read_description) (struct target_ops *ops); 631 632 /* Build the PTID of the thread on which a given task is running, 633 based on LWP and THREAD. These values are extracted from the 634 task Private_Data section of the Ada Task Control Block, and 635 their interpretation depends on the target. */ 636 ptid_t (*to_get_ada_task_ptid) (long lwp, long thread); 637 638 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR. 639 Return 0 if *READPTR is already at the end of the buffer. 640 Return -1 if there is insufficient buffer for a whole entry. 641 Return 1 if an entry was read into *TYPEP and *VALP. */ 642 int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr, 643 gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp); 644 645 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the 646 sequence of bytes in PATTERN with length PATTERN_LEN. 647 648 The result is 1 if found, 0 if not found, and -1 if there was an error 649 requiring halting of the search (e.g. memory read error). 650 If the pattern is found the address is recorded in FOUND_ADDRP. */ 651 int (*to_search_memory) (struct target_ops *ops, 652 CORE_ADDR start_addr, ULONGEST search_space_len, 653 const gdb_byte *pattern, ULONGEST pattern_len, 654 CORE_ADDR *found_addrp); 655 656 /* Can target execute in reverse? */ 657 int (*to_can_execute_reverse) (void); 658 659 /* The direction the target is currently executing. Must be 660 implemented on targets that support reverse execution and async 661 mode. The default simply returns forward execution. */ 662 enum exec_direction_kind (*to_execution_direction) (void); 663 664 /* Does this target support debugging multiple processes 665 simultaneously? */ 666 int (*to_supports_multi_process) (void); 667 668 /* Does this target support enabling and disabling tracepoints while a trace 669 experiment is running? */ 670 int (*to_supports_enable_disable_tracepoint) (void); 671 672 /* Does this target support disabling address space randomization? */ 673 int (*to_supports_disable_randomization) (void); 674 675 /* Does this target support the tracenz bytecode for string collection? */ 676 int (*to_supports_string_tracing) (void); 677 678 /* Does this target support evaluation of breakpoint conditions on its 679 end? */ 680 int (*to_supports_evaluation_of_breakpoint_conditions) (void); 681 682 /* Does this target support evaluation of breakpoint commands on its 683 end? */ 684 int (*to_can_run_breakpoint_commands) (void); 685 686 /* Determine current architecture of thread PTID. 687 688 The target is supposed to determine the architecture of the code where 689 the target is currently stopped at (on Cell, if a target is in spu_run, 690 to_thread_architecture would return SPU, otherwise PPC32 or PPC64). 691 This is architecture used to perform decr_pc_after_break adjustment, 692 and also determines the frame architecture of the innermost frame. 693 ptrace operations need to operate according to target_gdbarch (). 694 695 The default implementation always returns target_gdbarch (). */ 696 struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t); 697 698 /* Determine current address space of thread PTID. 699 700 The default implementation always returns the inferior's 701 address space. */ 702 struct address_space *(*to_thread_address_space) (struct target_ops *, 703 ptid_t); 704 705 /* Target file operations. */ 706 707 /* Open FILENAME on the target, using FLAGS and MODE. Return a 708 target file descriptor, or -1 if an error occurs (and set 709 *TARGET_ERRNO). */ 710 int (*to_fileio_open) (const char *filename, int flags, int mode, 711 int *target_errno); 712 713 /* Write up to LEN bytes from WRITE_BUF to FD on the target. 714 Return the number of bytes written, or -1 if an error occurs 715 (and set *TARGET_ERRNO). */ 716 int (*to_fileio_pwrite) (int fd, const gdb_byte *write_buf, int len, 717 ULONGEST offset, int *target_errno); 718 719 /* Read up to LEN bytes FD on the target into READ_BUF. 720 Return the number of bytes read, or -1 if an error occurs 721 (and set *TARGET_ERRNO). */ 722 int (*to_fileio_pread) (int fd, gdb_byte *read_buf, int len, 723 ULONGEST offset, int *target_errno); 724 725 /* Close FD on the target. Return 0, or -1 if an error occurs 726 (and set *TARGET_ERRNO). */ 727 int (*to_fileio_close) (int fd, int *target_errno); 728 729 /* Unlink FILENAME on the target. Return 0, or -1 if an error 730 occurs (and set *TARGET_ERRNO). */ 731 int (*to_fileio_unlink) (const char *filename, int *target_errno); 732 733 /* Read value of symbolic link FILENAME on the target. Return a 734 null-terminated string allocated via xmalloc, or NULL if an error 735 occurs (and set *TARGET_ERRNO). */ 736 char *(*to_fileio_readlink) (const char *filename, int *target_errno); 737 738 739 /* Implement the "info proc" command. */ 740 void (*to_info_proc) (struct target_ops *, char *, enum info_proc_what); 741 742 /* Tracepoint-related operations. */ 743 744 /* Prepare the target for a tracing run. */ 745 void (*to_trace_init) (void); 746 747 /* Send full details of a tracepoint location to the target. */ 748 void (*to_download_tracepoint) (struct bp_location *location); 749 750 /* Is the target able to download tracepoint locations in current 751 state? */ 752 int (*to_can_download_tracepoint) (void); 753 754 /* Send full details of a trace state variable to the target. */ 755 void (*to_download_trace_state_variable) (struct trace_state_variable *tsv); 756 757 /* Enable a tracepoint on the target. */ 758 void (*to_enable_tracepoint) (struct bp_location *location); 759 760 /* Disable a tracepoint on the target. */ 761 void (*to_disable_tracepoint) (struct bp_location *location); 762 763 /* Inform the target info of memory regions that are readonly 764 (such as text sections), and so it should return data from 765 those rather than look in the trace buffer. */ 766 void (*to_trace_set_readonly_regions) (void); 767 768 /* Start a trace run. */ 769 void (*to_trace_start) (void); 770 771 /* Get the current status of a tracing run. */ 772 int (*to_get_trace_status) (struct trace_status *ts); 773 774 void (*to_get_tracepoint_status) (struct breakpoint *tp, 775 struct uploaded_tp *utp); 776 777 /* Stop a trace run. */ 778 void (*to_trace_stop) (void); 779 780 /* Ask the target to find a trace frame of the given type TYPE, 781 using NUM, ADDR1, and ADDR2 as search parameters. Returns the 782 number of the trace frame, and also the tracepoint number at 783 TPP. If no trace frame matches, return -1. May throw if the 784 operation fails. */ 785 int (*to_trace_find) (enum trace_find_type type, int num, 786 ULONGEST addr1, ULONGEST addr2, int *tpp); 787 788 /* Get the value of the trace state variable number TSV, returning 789 1 if the value is known and writing the value itself into the 790 location pointed to by VAL, else returning 0. */ 791 int (*to_get_trace_state_variable_value) (int tsv, LONGEST *val); 792 793 int (*to_save_trace_data) (const char *filename); 794 795 int (*to_upload_tracepoints) (struct uploaded_tp **utpp); 796 797 int (*to_upload_trace_state_variables) (struct uploaded_tsv **utsvp); 798 799 LONGEST (*to_get_raw_trace_data) (gdb_byte *buf, 800 ULONGEST offset, LONGEST len); 801 802 /* Get the minimum length of instruction on which a fast tracepoint 803 may be set on the target. If this operation is unsupported, 804 return -1. If for some reason the minimum length cannot be 805 determined, return 0. */ 806 int (*to_get_min_fast_tracepoint_insn_len) (void); 807 808 /* Set the target's tracing behavior in response to unexpected 809 disconnection - set VAL to 1 to keep tracing, 0 to stop. */ 810 void (*to_set_disconnected_tracing) (int val); 811 void (*to_set_circular_trace_buffer) (int val); 812 /* Set the size of trace buffer in the target. */ 813 void (*to_set_trace_buffer_size) (LONGEST val); 814 815 /* Add/change textual notes about the trace run, returning 1 if 816 successful, 0 otherwise. */ 817 int (*to_set_trace_notes) (char *user, char *notes, char* stopnotes); 818 819 /* Return the processor core that thread PTID was last seen on. 820 This information is updated only when: 821 - update_thread_list is called 822 - thread stops 823 If the core cannot be determined -- either for the specified 824 thread, or right now, or in this debug session, or for this 825 target -- return -1. */ 826 int (*to_core_of_thread) (struct target_ops *, ptid_t ptid); 827 828 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range 829 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's 830 a match, 0 if there's a mismatch, and -1 if an error is 831 encountered while reading memory. */ 832 int (*to_verify_memory) (struct target_ops *, const gdb_byte *data, 833 CORE_ADDR memaddr, ULONGEST size); 834 835 /* Return the address of the start of the Thread Information Block 836 a Windows OS specific feature. */ 837 int (*to_get_tib_address) (ptid_t ptid, CORE_ADDR *addr); 838 839 /* Send the new settings of write permission variables. */ 840 void (*to_set_permissions) (void); 841 842 /* Look for a static tracepoint marker at ADDR, and fill in MARKER 843 with its details. Return 1 on success, 0 on failure. */ 844 int (*to_static_tracepoint_marker_at) (CORE_ADDR, 845 struct static_tracepoint_marker *marker); 846 847 /* Return a vector of all tracepoints markers string id ID, or all 848 markers if ID is NULL. */ 849 VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) 850 (const char *id); 851 852 /* Return a traceframe info object describing the current 853 traceframe's contents. This method should not cache data; 854 higher layers take care of caching, invalidating, and 855 re-fetching when necessary. */ 856 struct traceframe_info *(*to_traceframe_info) (void); 857 858 /* Ask the target to use or not to use agent according to USE. Return 1 859 successful, 0 otherwise. */ 860 int (*to_use_agent) (int use); 861 862 /* Is the target able to use agent in current state? */ 863 int (*to_can_use_agent) (void); 864 865 /* Check whether the target supports branch tracing. */ 866 int (*to_supports_btrace) (void); 867 868 /* Enable branch tracing for PTID and allocate a branch trace target 869 information struct for reading and for disabling branch trace. */ 870 struct btrace_target_info *(*to_enable_btrace) (ptid_t ptid); 871 872 /* Disable branch tracing and deallocate TINFO. */ 873 void (*to_disable_btrace) (struct btrace_target_info *tinfo); 874 875 /* Disable branch tracing and deallocate TINFO. This function is similar 876 to to_disable_btrace, except that it is called during teardown and is 877 only allowed to perform actions that are safe. A counter-example would 878 be attempting to talk to a remote target. */ 879 void (*to_teardown_btrace) (struct btrace_target_info *tinfo); 880 881 /* Read branch trace data. */ 882 VEC (btrace_block_s) *(*to_read_btrace) (struct btrace_target_info *, 883 enum btrace_read_type); 884 885 /* Stop trace recording. */ 886 void (*to_stop_recording) (void); 887 888 /* Print information about the recording. */ 889 void (*to_info_record) (void); 890 891 /* Save the recorded execution trace into a file. */ 892 void (*to_save_record) (char *filename); 893 894 /* Delete the recorded execution trace from the current position onwards. */ 895 void (*to_delete_record) (void); 896 897 /* Query if the record target is currently replaying. */ 898 int (*to_record_is_replaying) (void); 899 900 /* Go to the begin of the execution trace. */ 901 void (*to_goto_record_begin) (void); 902 903 /* Go to the end of the execution trace. */ 904 void (*to_goto_record_end) (void); 905 906 /* Go to a specific location in the recorded execution trace. */ 907 void (*to_goto_record) (ULONGEST insn); 908 909 /* Disassemble SIZE instructions in the recorded execution trace from 910 the current position. 911 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise, 912 disassemble SIZE succeeding instructions. */ 913 void (*to_insn_history) (int size, int flags); 914 915 /* Disassemble SIZE instructions in the recorded execution trace around 916 FROM. 917 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise, 918 disassemble SIZE instructions after FROM. */ 919 void (*to_insn_history_from) (ULONGEST from, int size, int flags); 920 921 /* Disassemble a section of the recorded execution trace from instruction 922 BEGIN (inclusive) to instruction END (exclusive). */ 923 void (*to_insn_history_range) (ULONGEST begin, ULONGEST end, int flags); 924 925 /* Print a function trace of the recorded execution trace. 926 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE 927 succeeding functions. */ 928 void (*to_call_history) (int size, int flags); 929 930 /* Print a function trace of the recorded execution trace starting 931 at function FROM. 932 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print 933 SIZE functions after FROM. */ 934 void (*to_call_history_from) (ULONGEST begin, int size, int flags); 935 936 /* Print a function trace of an execution trace section from function BEGIN 937 (inclusive) to function END (exclusive). */ 938 void (*to_call_history_range) (ULONGEST begin, ULONGEST end, int flags); 939 940 int to_magic; 941 /* Need sub-structure for target machine related rather than comm related? 942 */ 943 }; 944 945 /* Magic number for checking ops size. If a struct doesn't end with this 946 number, somebody changed the declaration but didn't change all the 947 places that initialize one. */ 948 949 #define OPS_MAGIC 3840 950 951 /* The ops structure for our "current" target process. This should 952 never be NULL. If there is no target, it points to the dummy_target. */ 953 954 extern struct target_ops current_target; 955 956 /* Define easy words for doing these operations on our current target. */ 957 958 #define target_shortname (current_target.to_shortname) 959 #define target_longname (current_target.to_longname) 960 961 /* Does whatever cleanup is required for a target that we are no 962 longer going to be calling. QUITTING indicates that GDB is exiting 963 and should not get hung on an error (otherwise it is important to 964 perform clean termination, even if it takes a while). This routine 965 is automatically always called after popping the target off the 966 target stack - the target's own methods are no longer available 967 through the target vector. Closing file descriptors and freeing all 968 memory allocated memory are typical things it should do. */ 969 970 void target_close (struct target_ops *targ, int quitting); 971 972 /* Attaches to a process on the target side. Arguments are as passed 973 to the `attach' command by the user. This routine can be called 974 when the target is not on the target-stack, if the target_can_run 975 routine returns 1; in that case, it must push itself onto the stack. 976 Upon exit, the target should be ready for normal operations, and 977 should be ready to deliver the status of the process immediately 978 (without waiting) to an upcoming target_wait call. */ 979 980 void target_attach (char *, int); 981 982 /* Some targets don't generate traps when attaching to the inferior, 983 or their target_attach implementation takes care of the waiting. 984 These targets must set to_attach_no_wait. */ 985 986 #define target_attach_no_wait \ 987 (current_target.to_attach_no_wait) 988 989 /* The target_attach operation places a process under debugger control, 990 and stops the process. 991 992 This operation provides a target-specific hook that allows the 993 necessary bookkeeping to be performed after an attach completes. */ 994 #define target_post_attach(pid) \ 995 (*current_target.to_post_attach) (pid) 996 997 /* Takes a program previously attached to and detaches it. 998 The program may resume execution (some targets do, some don't) and will 999 no longer stop on signals, etc. We better not have left any breakpoints 1000 in the program or it'll die when it hits one. ARGS is arguments 1001 typed by the user (e.g. a signal to send the process). FROM_TTY 1002 says whether to be verbose or not. */ 1003 1004 extern void target_detach (char *, int); 1005 1006 /* Disconnect from the current target without resuming it (leaving it 1007 waiting for a debugger). */ 1008 1009 extern void target_disconnect (char *, int); 1010 1011 /* Resume execution of the target process PTID (or a group of 1012 threads). STEP says whether to single-step or to run free; SIGGNAL 1013 is the signal to be given to the target, or GDB_SIGNAL_0 for no 1014 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific 1015 PTID means `step/resume only this process id'. A wildcard PTID 1016 (all threads, or all threads of process) means `step/resume 1017 INFERIOR_PTID, and let other threads (for which the wildcard PTID 1018 matches) resume with their 'thread->suspend.stop_signal' signal 1019 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal 1020 if in "no pass" state. */ 1021 1022 extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal); 1023 1024 /* Wait for process pid to do something. PTID = -1 to wait for any 1025 pid to do something. Return pid of child, or -1 in case of error; 1026 store status through argument pointer STATUS. Note that it is 1027 _NOT_ OK to throw_exception() out of target_wait() without popping 1028 the debugging target from the stack; GDB isn't prepared to get back 1029 to the prompt with a debugging target but without the frame cache, 1030 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W* 1031 options. */ 1032 1033 extern ptid_t target_wait (ptid_t ptid, struct target_waitstatus *status, 1034 int options); 1035 1036 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ 1037 1038 extern void target_fetch_registers (struct regcache *regcache, int regno); 1039 1040 /* Store at least register REGNO, or all regs if REGNO == -1. 1041 It can store as many registers as it wants to, so target_prepare_to_store 1042 must have been previously called. Calls error() if there are problems. */ 1043 1044 extern void target_store_registers (struct regcache *regcache, int regs); 1045 1046 /* Get ready to modify the registers array. On machines which store 1047 individual registers, this doesn't need to do anything. On machines 1048 which store all the registers in one fell swoop, this makes sure 1049 that REGISTERS contains all the registers from the program being 1050 debugged. */ 1051 1052 #define target_prepare_to_store(regcache) \ 1053 (*current_target.to_prepare_to_store) (regcache) 1054 1055 /* Determine current address space of thread PTID. */ 1056 1057 struct address_space *target_thread_address_space (ptid_t); 1058 1059 /* Implement the "info proc" command. This returns one if the request 1060 was handled, and zero otherwise. It can also throw an exception if 1061 an error was encountered while attempting to handle the 1062 request. */ 1063 1064 int target_info_proc (char *, enum info_proc_what); 1065 1066 /* Returns true if this target can debug multiple processes 1067 simultaneously. */ 1068 1069 #define target_supports_multi_process() \ 1070 (*current_target.to_supports_multi_process) () 1071 1072 /* Returns true if this target can disable address space randomization. */ 1073 1074 int target_supports_disable_randomization (void); 1075 1076 /* Returns true if this target can enable and disable tracepoints 1077 while a trace experiment is running. */ 1078 1079 #define target_supports_enable_disable_tracepoint() \ 1080 (*current_target.to_supports_enable_disable_tracepoint) () 1081 1082 #define target_supports_string_tracing() \ 1083 (*current_target.to_supports_string_tracing) () 1084 1085 /* Returns true if this target can handle breakpoint conditions 1086 on its end. */ 1087 1088 #define target_supports_evaluation_of_breakpoint_conditions() \ 1089 (*current_target.to_supports_evaluation_of_breakpoint_conditions) () 1090 1091 /* Returns true if this target can handle breakpoint commands 1092 on its end. */ 1093 1094 #define target_can_run_breakpoint_commands() \ 1095 (*current_target.to_can_run_breakpoint_commands) () 1096 1097 /* Invalidate all target dcaches. */ 1098 extern void target_dcache_invalidate (void); 1099 1100 extern int target_read_string (CORE_ADDR, char **, int, int *); 1101 1102 extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, 1103 ssize_t len); 1104 1105 extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); 1106 1107 extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, 1108 ssize_t len); 1109 1110 extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, 1111 ssize_t len); 1112 1113 /* Fetches the target's memory map. If one is found it is sorted 1114 and returned, after some consistency checking. Otherwise, NULL 1115 is returned. */ 1116 VEC(mem_region_s) *target_memory_map (void); 1117 1118 /* Erase the specified flash region. */ 1119 void target_flash_erase (ULONGEST address, LONGEST length); 1120 1121 /* Finish a sequence of flash operations. */ 1122 void target_flash_done (void); 1123 1124 /* Describes a request for a memory write operation. */ 1125 struct memory_write_request 1126 { 1127 /* Begining address that must be written. */ 1128 ULONGEST begin; 1129 /* Past-the-end address. */ 1130 ULONGEST end; 1131 /* The data to write. */ 1132 gdb_byte *data; 1133 /* A callback baton for progress reporting for this request. */ 1134 void *baton; 1135 }; 1136 typedef struct memory_write_request memory_write_request_s; 1137 DEF_VEC_O(memory_write_request_s); 1138 1139 /* Enumeration specifying different flash preservation behaviour. */ 1140 enum flash_preserve_mode 1141 { 1142 flash_preserve, 1143 flash_discard 1144 }; 1145 1146 /* Write several memory blocks at once. This version can be more 1147 efficient than making several calls to target_write_memory, in 1148 particular because it can optimize accesses to flash memory. 1149 1150 Moreover, this is currently the only memory access function in gdb 1151 that supports writing to flash memory, and it should be used for 1152 all cases where access to flash memory is desirable. 1153 1154 REQUESTS is the vector (see vec.h) of memory_write_request. 1155 PRESERVE_FLASH_P indicates what to do with blocks which must be 1156 erased, but not completely rewritten. 1157 PROGRESS_CB is a function that will be periodically called to provide 1158 feedback to user. It will be called with the baton corresponding 1159 to the request currently being written. It may also be called 1160 with a NULL baton, when preserved flash sectors are being rewritten. 1161 1162 The function returns 0 on success, and error otherwise. */ 1163 int target_write_memory_blocks (VEC(memory_write_request_s) *requests, 1164 enum flash_preserve_mode preserve_flash_p, 1165 void (*progress_cb) (ULONGEST, void *)); 1166 1167 /* Print a line about the current target. */ 1168 1169 #define target_files_info() \ 1170 (*current_target.to_files_info) (¤t_target) 1171 1172 /* Insert a breakpoint at address BP_TGT->placed_address in the target 1173 machine. Result is 0 for success, or an errno value. */ 1174 1175 extern int target_insert_breakpoint (struct gdbarch *gdbarch, 1176 struct bp_target_info *bp_tgt); 1177 1178 /* Remove a breakpoint at address BP_TGT->placed_address in the target 1179 machine. Result is 0 for success, or an errno value. */ 1180 1181 extern int target_remove_breakpoint (struct gdbarch *gdbarch, 1182 struct bp_target_info *bp_tgt); 1183 1184 /* Initialize the terminal settings we record for the inferior, 1185 before we actually run the inferior. */ 1186 1187 #define target_terminal_init() \ 1188 (*current_target.to_terminal_init) () 1189 1190 /* Put the inferior's terminal settings into effect. 1191 This is preparation for starting or resuming the inferior. */ 1192 1193 extern void target_terminal_inferior (void); 1194 1195 /* Put some of our terminal settings into effect, 1196 enough to get proper results from our output, 1197 but do not change into or out of RAW mode 1198 so that no input is discarded. 1199 1200 After doing this, either terminal_ours or terminal_inferior 1201 should be called to get back to a normal state of affairs. */ 1202 1203 #define target_terminal_ours_for_output() \ 1204 (*current_target.to_terminal_ours_for_output) () 1205 1206 /* Put our terminal settings into effect. 1207 First record the inferior's terminal settings 1208 so they can be restored properly later. */ 1209 1210 #define target_terminal_ours() \ 1211 (*current_target.to_terminal_ours) () 1212 1213 /* Save our terminal settings. 1214 This is called from TUI after entering or leaving the curses 1215 mode. Since curses modifies our terminal this call is here 1216 to take this change into account. */ 1217 1218 #define target_terminal_save_ours() \ 1219 (*current_target.to_terminal_save_ours) () 1220 1221 /* Print useful information about our terminal status, if such a thing 1222 exists. */ 1223 1224 #define target_terminal_info(arg, from_tty) \ 1225 (*current_target.to_terminal_info) (arg, from_tty) 1226 1227 /* Kill the inferior process. Make it go away. */ 1228 1229 extern void target_kill (void); 1230 1231 /* Load an executable file into the target process. This is expected 1232 to not only bring new code into the target process, but also to 1233 update GDB's symbol tables to match. 1234 1235 ARG contains command-line arguments, to be broken down with 1236 buildargv (). The first non-switch argument is the filename to 1237 load, FILE; the second is a number (as parsed by strtoul (..., ..., 1238 0)), which is an offset to apply to the load addresses of FILE's 1239 sections. The target may define switches, or other non-switch 1240 arguments, as it pleases. */ 1241 1242 extern void target_load (char *arg, int from_tty); 1243 1244 /* Start an inferior process and set inferior_ptid to its pid. 1245 EXEC_FILE is the file to run. 1246 ALLARGS is a string containing the arguments to the program. 1247 ENV is the environment vector to pass. Errors reported with error(). 1248 On VxWorks and various standalone systems, we ignore exec_file. */ 1249 1250 void target_create_inferior (char *exec_file, char *args, 1251 char **env, int from_tty); 1252 1253 /* Some targets (such as ttrace-based HPUX) don't allow us to request 1254 notification of inferior events such as fork and vork immediately 1255 after the inferior is created. (This because of how gdb gets an 1256 inferior created via invoking a shell to do it. In such a scenario, 1257 if the shell init file has commands in it, the shell will fork and 1258 exec for each of those commands, and we will see each such fork 1259 event. Very bad.) 1260 1261 Such targets will supply an appropriate definition for this function. */ 1262 1263 #define target_post_startup_inferior(ptid) \ 1264 (*current_target.to_post_startup_inferior) (ptid) 1265 1266 /* On some targets, we can catch an inferior fork or vfork event when 1267 it occurs. These functions insert/remove an already-created 1268 catchpoint for such events. They return 0 for success, 1 if the 1269 catchpoint type is not supported and -1 for failure. */ 1270 1271 #define target_insert_fork_catchpoint(pid) \ 1272 (*current_target.to_insert_fork_catchpoint) (pid) 1273 1274 #define target_remove_fork_catchpoint(pid) \ 1275 (*current_target.to_remove_fork_catchpoint) (pid) 1276 1277 #define target_insert_vfork_catchpoint(pid) \ 1278 (*current_target.to_insert_vfork_catchpoint) (pid) 1279 1280 #define target_remove_vfork_catchpoint(pid) \ 1281 (*current_target.to_remove_vfork_catchpoint) (pid) 1282 1283 /* If the inferior forks or vforks, this function will be called at 1284 the next resume in order to perform any bookkeeping and fiddling 1285 necessary to continue debugging either the parent or child, as 1286 requested, and releasing the other. Information about the fork 1287 or vfork event is available via get_last_target_status (). 1288 This function returns 1 if the inferior should not be resumed 1289 (i.e. there is another event pending). */ 1290 1291 int target_follow_fork (int follow_child); 1292 1293 /* On some targets, we can catch an inferior exec event when it 1294 occurs. These functions insert/remove an already-created 1295 catchpoint for such events. They return 0 for success, 1 if the 1296 catchpoint type is not supported and -1 for failure. */ 1297 1298 #define target_insert_exec_catchpoint(pid) \ 1299 (*current_target.to_insert_exec_catchpoint) (pid) 1300 1301 #define target_remove_exec_catchpoint(pid) \ 1302 (*current_target.to_remove_exec_catchpoint) (pid) 1303 1304 /* Syscall catch. 1305 1306 NEEDED is nonzero if any syscall catch (of any kind) is requested. 1307 If NEEDED is zero, it means the target can disable the mechanism to 1308 catch system calls because there are no more catchpoints of this type. 1309 1310 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is 1311 being requested. In this case, both TABLE_SIZE and TABLE should 1312 be ignored. 1313 1314 TABLE_SIZE is the number of elements in TABLE. It only matters if 1315 ANY_COUNT is zero. 1316 1317 TABLE is an array of ints, indexed by syscall number. An element in 1318 this array is nonzero if that syscall should be caught. This argument 1319 only matters if ANY_COUNT is zero. 1320 1321 Return 0 for success, 1 if syscall catchpoints are not supported or -1 1322 for failure. */ 1323 1324 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \ 1325 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \ 1326 table_size, table) 1327 1328 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the 1329 exit code of PID, if any. */ 1330 1331 #define target_has_exited(pid,wait_status,exit_status) \ 1332 (*current_target.to_has_exited) (pid,wait_status,exit_status) 1333 1334 /* The debugger has completed a blocking wait() call. There is now 1335 some process event that must be processed. This function should 1336 be defined by those targets that require the debugger to perform 1337 cleanup or internal state changes in response to the process event. */ 1338 1339 /* The inferior process has died. Do what is right. */ 1340 1341 void target_mourn_inferior (void); 1342 1343 /* Does target have enough data to do a run or attach command? */ 1344 1345 #define target_can_run(t) \ 1346 ((t)->to_can_run) () 1347 1348 /* Set list of signals to be handled in the target. 1349 1350 PASS_SIGNALS is an array of size NSIG, indexed by target signal number 1351 (enum gdb_signal). For every signal whose entry in this array is 1352 non-zero, the target is allowed -but not required- to skip reporting 1353 arrival of the signal to the GDB core by returning from target_wait, 1354 and to pass the signal directly to the inferior instead. 1355 1356 However, if the target is hardware single-stepping a thread that is 1357 about to receive a signal, it needs to be reported in any case, even 1358 if mentioned in a previous target_pass_signals call. */ 1359 1360 extern void target_pass_signals (int nsig, unsigned char *pass_signals); 1361 1362 /* Set list of signals the target may pass to the inferior. This 1363 directly maps to the "handle SIGNAL pass/nopass" setting. 1364 1365 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal 1366 number (enum gdb_signal). For every signal whose entry in this 1367 array is non-zero, the target is allowed to pass the signal to the 1368 inferior. Signals not present in the array shall be silently 1369 discarded. This does not influence whether to pass signals to the 1370 inferior as a result of a target_resume call. This is useful in 1371 scenarios where the target needs to decide whether to pass or not a 1372 signal to the inferior without GDB core involvement, such as for 1373 example, when detaching (as threads may have been suspended with 1374 pending signals not reported to GDB). */ 1375 1376 extern void target_program_signals (int nsig, unsigned char *program_signals); 1377 1378 /* Check to see if a thread is still alive. */ 1379 1380 extern int target_thread_alive (ptid_t ptid); 1381 1382 /* Query for new threads and add them to the thread list. */ 1383 1384 extern void target_find_new_threads (void); 1385 1386 /* Make target stop in a continuable fashion. (For instance, under 1387 Unix, this should act like SIGSTOP). This function is normally 1388 used by GUIs to implement a stop button. */ 1389 1390 extern void target_stop (ptid_t ptid); 1391 1392 /* Send the specified COMMAND to the target's monitor 1393 (shell,interpreter) for execution. The result of the query is 1394 placed in OUTBUF. */ 1395 1396 #define target_rcmd(command, outbuf) \ 1397 (*current_target.to_rcmd) (command, outbuf) 1398 1399 1400 /* Does the target include all of memory, or only part of it? This 1401 determines whether we look up the target chain for other parts of 1402 memory if this target can't satisfy a request. */ 1403 1404 extern int target_has_all_memory_1 (void); 1405 #define target_has_all_memory target_has_all_memory_1 () 1406 1407 /* Does the target include memory? (Dummy targets don't.) */ 1408 1409 extern int target_has_memory_1 (void); 1410 #define target_has_memory target_has_memory_1 () 1411 1412 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until 1413 we start a process.) */ 1414 1415 extern int target_has_stack_1 (void); 1416 #define target_has_stack target_has_stack_1 () 1417 1418 /* Does the target have registers? (Exec files don't.) */ 1419 1420 extern int target_has_registers_1 (void); 1421 #define target_has_registers target_has_registers_1 () 1422 1423 /* Does the target have execution? Can we make it jump (through 1424 hoops), or pop its stack a few times? This means that the current 1425 target is currently executing; for some targets, that's the same as 1426 whether or not the target is capable of execution, but there are 1427 also targets which can be current while not executing. In that 1428 case this will become true after target_create_inferior or 1429 target_attach. */ 1430 1431 extern int target_has_execution_1 (ptid_t); 1432 1433 /* Like target_has_execution_1, but always passes inferior_ptid. */ 1434 1435 extern int target_has_execution_current (void); 1436 1437 #define target_has_execution target_has_execution_current () 1438 1439 /* Default implementations for process_stratum targets. Return true 1440 if there's a selected inferior, false otherwise. */ 1441 1442 extern int default_child_has_all_memory (struct target_ops *ops); 1443 extern int default_child_has_memory (struct target_ops *ops); 1444 extern int default_child_has_stack (struct target_ops *ops); 1445 extern int default_child_has_registers (struct target_ops *ops); 1446 extern int default_child_has_execution (struct target_ops *ops, 1447 ptid_t the_ptid); 1448 1449 /* Can the target support the debugger control of thread execution? 1450 Can it lock the thread scheduler? */ 1451 1452 #define target_can_lock_scheduler \ 1453 (current_target.to_has_thread_control & tc_schedlock) 1454 1455 /* Should the target enable async mode if it is supported? Temporary 1456 cludge until async mode is a strict superset of sync mode. */ 1457 extern int target_async_permitted; 1458 1459 /* Can the target support asynchronous execution? */ 1460 #define target_can_async_p() (current_target.to_can_async_p ()) 1461 1462 /* Is the target in asynchronous execution mode? */ 1463 #define target_is_async_p() (current_target.to_is_async_p ()) 1464 1465 int target_supports_non_stop (void); 1466 1467 /* Put the target in async mode with the specified callback function. */ 1468 #define target_async(CALLBACK,CONTEXT) \ 1469 (current_target.to_async ((CALLBACK), (CONTEXT))) 1470 1471 #define target_execution_direction() \ 1472 (current_target.to_execution_direction ()) 1473 1474 /* Converts a process id to a string. Usually, the string just contains 1475 `process xyz', but on some systems it may contain 1476 `process xyz thread abc'. */ 1477 1478 extern char *target_pid_to_str (ptid_t ptid); 1479 1480 extern char *normal_pid_to_str (ptid_t ptid); 1481 1482 /* Return a short string describing extra information about PID, 1483 e.g. "sleeping", "runnable", "running on LWP 3". Null return value 1484 is okay. */ 1485 1486 #define target_extra_thread_info(TP) \ 1487 (current_target.to_extra_thread_info (TP)) 1488 1489 /* Return the thread's name. A NULL result means that the target 1490 could not determine this thread's name. */ 1491 1492 extern char *target_thread_name (struct thread_info *); 1493 1494 /* Attempts to find the pathname of the executable file 1495 that was run to create a specified process. 1496 1497 The process PID must be stopped when this operation is used. 1498 1499 If the executable file cannot be determined, NULL is returned. 1500 1501 Else, a pointer to a character string containing the pathname 1502 is returned. This string should be copied into a buffer by 1503 the client if the string will not be immediately used, or if 1504 it must persist. */ 1505 1506 #define target_pid_to_exec_file(pid) \ 1507 (current_target.to_pid_to_exec_file) (pid) 1508 1509 /* See the to_thread_architecture description in struct target_ops. */ 1510 1511 #define target_thread_architecture(ptid) \ 1512 (current_target.to_thread_architecture (¤t_target, ptid)) 1513 1514 /* 1515 * Iterator function for target memory regions. 1516 * Calls a callback function once for each memory region 'mapped' 1517 * in the child process. Defined as a simple macro rather than 1518 * as a function macro so that it can be tested for nullity. 1519 */ 1520 1521 #define target_find_memory_regions(FUNC, DATA) \ 1522 (current_target.to_find_memory_regions) (FUNC, DATA) 1523 1524 /* 1525 * Compose corefile .note section. 1526 */ 1527 1528 #define target_make_corefile_notes(BFD, SIZE_P) \ 1529 (current_target.to_make_corefile_notes) (BFD, SIZE_P) 1530 1531 /* Bookmark interfaces. */ 1532 #define target_get_bookmark(ARGS, FROM_TTY) \ 1533 (current_target.to_get_bookmark) (ARGS, FROM_TTY) 1534 1535 #define target_goto_bookmark(ARG, FROM_TTY) \ 1536 (current_target.to_goto_bookmark) (ARG, FROM_TTY) 1537 1538 /* Hardware watchpoint interfaces. */ 1539 1540 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or 1541 write). Only the INFERIOR_PTID task is being queried. */ 1542 1543 #define target_stopped_by_watchpoint \ 1544 (*current_target.to_stopped_by_watchpoint) 1545 1546 /* Non-zero if we have steppable watchpoints */ 1547 1548 #define target_have_steppable_watchpoint \ 1549 (current_target.to_have_steppable_watchpoint) 1550 1551 /* Non-zero if we have continuable watchpoints */ 1552 1553 #define target_have_continuable_watchpoint \ 1554 (current_target.to_have_continuable_watchpoint) 1555 1556 /* Provide defaults for hardware watchpoint functions. */ 1557 1558 /* If the *_hw_beakpoint functions have not been defined 1559 elsewhere use the definitions in the target vector. */ 1560 1561 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is 1562 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or 1563 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far 1564 (including this one?). OTHERTYPE is who knows what... */ 1565 1566 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \ 1567 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); 1568 1569 /* Returns the number of debug registers needed to watch the given 1570 memory region, or zero if not supported. */ 1571 1572 #define target_region_ok_for_hw_watchpoint(addr, len) \ 1573 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len) 1574 1575 1576 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. 1577 TYPE is 0 for write, 1 for read, and 2 for read/write accesses. 1578 COND is the expression for its condition, or NULL if there's none. 1579 Returns 0 for success, 1 if the watchpoint type is not supported, 1580 -1 for failure. */ 1581 1582 #define target_insert_watchpoint(addr, len, type, cond) \ 1583 (*current_target.to_insert_watchpoint) (addr, len, type, cond) 1584 1585 #define target_remove_watchpoint(addr, len, type, cond) \ 1586 (*current_target.to_remove_watchpoint) (addr, len, type, cond) 1587 1588 /* Insert a new masked watchpoint at ADDR using the mask MASK. 1589 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint 1590 or hw_access for an access watchpoint. Returns 0 for success, 1 if 1591 masked watchpoints are not supported, -1 for failure. */ 1592 1593 extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR, int); 1594 1595 /* Remove a masked watchpoint at ADDR with the mask MASK. 1596 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint 1597 or hw_access for an access watchpoint. Returns 0 for success, non-zero 1598 for failure. */ 1599 1600 extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR, int); 1601 1602 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \ 1603 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt) 1604 1605 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \ 1606 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt) 1607 1608 /* Return number of debug registers needed for a ranged breakpoint, 1609 or -1 if ranged breakpoints are not supported. */ 1610 1611 extern int target_ranged_break_num_registers (void); 1612 1613 /* Return non-zero if target knows the data address which triggered this 1614 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the 1615 INFERIOR_PTID task is being queried. */ 1616 #define target_stopped_data_address(target, addr_p) \ 1617 (*target.to_stopped_data_address) (target, addr_p) 1618 1619 /* Return non-zero if ADDR is within the range of a watchpoint spanning 1620 LENGTH bytes beginning at START. */ 1621 #define target_watchpoint_addr_within_range(target, addr, start, length) \ 1622 (*target.to_watchpoint_addr_within_range) (target, addr, start, length) 1623 1624 /* Return non-zero if the target is capable of using hardware to evaluate 1625 the condition expression. In this case, if the condition is false when 1626 the watched memory location changes, execution may continue without the 1627 debugger being notified. 1628 1629 Due to limitations in the hardware implementation, it may be capable of 1630 avoiding triggering the watchpoint in some cases where the condition 1631 expression is false, but may report some false positives as well. 1632 For this reason, GDB will still evaluate the condition expression when 1633 the watchpoint triggers. */ 1634 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \ 1635 (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond) 1636 1637 /* Return number of debug registers needed for a masked watchpoint, 1638 -1 if masked watchpoints are not supported or -2 if the given address 1639 and mask combination cannot be used. */ 1640 1641 extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask); 1642 1643 /* Target can execute in reverse? */ 1644 #define target_can_execute_reverse \ 1645 (current_target.to_can_execute_reverse ? \ 1646 current_target.to_can_execute_reverse () : 0) 1647 1648 extern const struct target_desc *target_read_description (struct target_ops *); 1649 1650 #define target_get_ada_task_ptid(lwp, tid) \ 1651 (*current_target.to_get_ada_task_ptid) (lwp,tid) 1652 1653 /* Utility implementation of searching memory. */ 1654 extern int simple_search_memory (struct target_ops* ops, 1655 CORE_ADDR start_addr, 1656 ULONGEST search_space_len, 1657 const gdb_byte *pattern, 1658 ULONGEST pattern_len, 1659 CORE_ADDR *found_addrp); 1660 1661 /* Main entry point for searching memory. */ 1662 extern int target_search_memory (CORE_ADDR start_addr, 1663 ULONGEST search_space_len, 1664 const gdb_byte *pattern, 1665 ULONGEST pattern_len, 1666 CORE_ADDR *found_addrp); 1667 1668 /* Target file operations. */ 1669 1670 /* Open FILENAME on the target, using FLAGS and MODE. Return a 1671 target file descriptor, or -1 if an error occurs (and set 1672 *TARGET_ERRNO). */ 1673 extern int target_fileio_open (const char *filename, int flags, int mode, 1674 int *target_errno); 1675 1676 /* Write up to LEN bytes from WRITE_BUF to FD on the target. 1677 Return the number of bytes written, or -1 if an error occurs 1678 (and set *TARGET_ERRNO). */ 1679 extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, 1680 ULONGEST offset, int *target_errno); 1681 1682 /* Read up to LEN bytes FD on the target into READ_BUF. 1683 Return the number of bytes read, or -1 if an error occurs 1684 (and set *TARGET_ERRNO). */ 1685 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len, 1686 ULONGEST offset, int *target_errno); 1687 1688 /* Close FD on the target. Return 0, or -1 if an error occurs 1689 (and set *TARGET_ERRNO). */ 1690 extern int target_fileio_close (int fd, int *target_errno); 1691 1692 /* Unlink FILENAME on the target. Return 0, or -1 if an error 1693 occurs (and set *TARGET_ERRNO). */ 1694 extern int target_fileio_unlink (const char *filename, int *target_errno); 1695 1696 /* Read value of symbolic link FILENAME on the target. Return a 1697 null-terminated string allocated via xmalloc, or NULL if an error 1698 occurs (and set *TARGET_ERRNO). */ 1699 extern char *target_fileio_readlink (const char *filename, int *target_errno); 1700 1701 /* Read target file FILENAME. The return value will be -1 if the transfer 1702 fails or is not supported; 0 if the object is empty; or the length 1703 of the object otherwise. If a positive value is returned, a 1704 sufficiently large buffer will be allocated using xmalloc and 1705 returned in *BUF_P containing the contents of the object. 1706 1707 This method should be used for objects sufficiently small to store 1708 in a single xmalloc'd buffer, when no fixed bound on the object's 1709 size is known in advance. */ 1710 extern LONGEST target_fileio_read_alloc (const char *filename, 1711 gdb_byte **buf_p); 1712 1713 /* Read target file FILENAME. The result is NUL-terminated and 1714 returned as a string, allocated using xmalloc. If an error occurs 1715 or the transfer is unsupported, NULL is returned. Empty objects 1716 are returned as allocated but empty strings. A warning is issued 1717 if the result contains any embedded NUL bytes. */ 1718 extern char *target_fileio_read_stralloc (const char *filename); 1719 1720 1721 /* Tracepoint-related operations. */ 1722 1723 #define target_trace_init() \ 1724 (*current_target.to_trace_init) () 1725 1726 #define target_download_tracepoint(t) \ 1727 (*current_target.to_download_tracepoint) (t) 1728 1729 #define target_can_download_tracepoint() \ 1730 (*current_target.to_can_download_tracepoint) () 1731 1732 #define target_download_trace_state_variable(tsv) \ 1733 (*current_target.to_download_trace_state_variable) (tsv) 1734 1735 #define target_enable_tracepoint(loc) \ 1736 (*current_target.to_enable_tracepoint) (loc) 1737 1738 #define target_disable_tracepoint(loc) \ 1739 (*current_target.to_disable_tracepoint) (loc) 1740 1741 #define target_trace_start() \ 1742 (*current_target.to_trace_start) () 1743 1744 #define target_trace_set_readonly_regions() \ 1745 (*current_target.to_trace_set_readonly_regions) () 1746 1747 #define target_get_trace_status(ts) \ 1748 (*current_target.to_get_trace_status) (ts) 1749 1750 #define target_get_tracepoint_status(tp,utp) \ 1751 (*current_target.to_get_tracepoint_status) (tp, utp) 1752 1753 #define target_trace_stop() \ 1754 (*current_target.to_trace_stop) () 1755 1756 #define target_trace_find(type,num,addr1,addr2,tpp) \ 1757 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp)) 1758 1759 #define target_get_trace_state_variable_value(tsv,val) \ 1760 (*current_target.to_get_trace_state_variable_value) ((tsv), (val)) 1761 1762 #define target_save_trace_data(filename) \ 1763 (*current_target.to_save_trace_data) (filename) 1764 1765 #define target_upload_tracepoints(utpp) \ 1766 (*current_target.to_upload_tracepoints) (utpp) 1767 1768 #define target_upload_trace_state_variables(utsvp) \ 1769 (*current_target.to_upload_trace_state_variables) (utsvp) 1770 1771 #define target_get_raw_trace_data(buf,offset,len) \ 1772 (*current_target.to_get_raw_trace_data) ((buf), (offset), (len)) 1773 1774 #define target_get_min_fast_tracepoint_insn_len() \ 1775 (*current_target.to_get_min_fast_tracepoint_insn_len) () 1776 1777 #define target_set_disconnected_tracing(val) \ 1778 (*current_target.to_set_disconnected_tracing) (val) 1779 1780 #define target_set_circular_trace_buffer(val) \ 1781 (*current_target.to_set_circular_trace_buffer) (val) 1782 1783 #define target_set_trace_buffer_size(val) \ 1784 (*current_target.to_set_trace_buffer_size) (val) 1785 1786 #define target_set_trace_notes(user,notes,stopnotes) \ 1787 (*current_target.to_set_trace_notes) ((user), (notes), (stopnotes)) 1788 1789 #define target_get_tib_address(ptid, addr) \ 1790 (*current_target.to_get_tib_address) ((ptid), (addr)) 1791 1792 #define target_set_permissions() \ 1793 (*current_target.to_set_permissions) () 1794 1795 #define target_static_tracepoint_marker_at(addr, marker) \ 1796 (*current_target.to_static_tracepoint_marker_at) (addr, marker) 1797 1798 #define target_static_tracepoint_markers_by_strid(marker_id) \ 1799 (*current_target.to_static_tracepoint_markers_by_strid) (marker_id) 1800 1801 #define target_traceframe_info() \ 1802 (*current_target.to_traceframe_info) () 1803 1804 #define target_use_agent(use) \ 1805 (*current_target.to_use_agent) (use) 1806 1807 #define target_can_use_agent() \ 1808 (*current_target.to_can_use_agent) () 1809 1810 /* Command logging facility. */ 1811 1812 #define target_log_command(p) \ 1813 do \ 1814 if (current_target.to_log_command) \ 1815 (*current_target.to_log_command) (p); \ 1816 while (0) 1817 1818 1819 extern int target_core_of_thread (ptid_t ptid); 1820 1821 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches 1822 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0 1823 if there's a mismatch, and -1 if an error is encountered while 1824 reading memory. Throws an error if the functionality is found not 1825 to be supported by the current target. */ 1826 int target_verify_memory (const gdb_byte *data, 1827 CORE_ADDR memaddr, ULONGEST size); 1828 1829 /* Routines for maintenance of the target structures... 1830 1831 add_target: Add a target to the list of all possible targets. 1832 1833 push_target: Make this target the top of the stack of currently used 1834 targets, within its particular stratum of the stack. Result 1835 is 0 if now atop the stack, nonzero if not on top (maybe 1836 should warn user). 1837 1838 unpush_target: Remove this from the stack of currently used targets, 1839 no matter where it is on the list. Returns 0 if no 1840 change, 1 if removed from stack. 1841 1842 pop_target: Remove the top thing on the stack of current targets. */ 1843 1844 extern void add_target (struct target_ops *); 1845 1846 /* Adds a command ALIAS for target T and marks it deprecated. This is useful 1847 for maintaining backwards compatibility when renaming targets. */ 1848 1849 extern void add_deprecated_target_alias (struct target_ops *t, char *alias); 1850 1851 extern void push_target (struct target_ops *); 1852 1853 extern int unpush_target (struct target_ops *); 1854 1855 extern void target_pre_inferior (int); 1856 1857 extern void target_preopen (int); 1858 1859 extern void pop_target (void); 1860 1861 /* Does whatever cleanup is required to get rid of all pushed targets. 1862 QUITTING is propagated to target_close; it indicates that GDB is 1863 exiting and should not get hung on an error (otherwise it is 1864 important to perform clean termination, even if it takes a 1865 while). */ 1866 extern void pop_all_targets (int quitting); 1867 1868 /* Like pop_all_targets, but pops only targets whose stratum is 1869 strictly above ABOVE_STRATUM. */ 1870 extern void pop_all_targets_above (enum strata above_stratum, int quitting); 1871 1872 extern int target_is_pushed (struct target_ops *t); 1873 1874 extern CORE_ADDR target_translate_tls_address (struct objfile *objfile, 1875 CORE_ADDR offset); 1876 1877 /* Struct target_section maps address ranges to file sections. It is 1878 mostly used with BFD files, but can be used without (e.g. for handling 1879 raw disks, or files not in formats handled by BFD). */ 1880 1881 struct target_section 1882 { 1883 CORE_ADDR addr; /* Lowest address in section */ 1884 CORE_ADDR endaddr; /* 1+highest address in section */ 1885 1886 struct bfd_section *the_bfd_section; 1887 1888 /* A given BFD may appear multiple times in the target section 1889 list, so each BFD is associated with a given key. The key is 1890 just some convenient pointer that can be used to differentiate 1891 the BFDs. These are managed only by convention. */ 1892 void *key; 1893 1894 bfd *bfd; /* BFD file pointer */ 1895 }; 1896 1897 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */ 1898 1899 struct target_section_table 1900 { 1901 struct target_section *sections; 1902 struct target_section *sections_end; 1903 }; 1904 1905 /* Return the "section" containing the specified address. */ 1906 struct target_section *target_section_by_addr (struct target_ops *target, 1907 CORE_ADDR addr); 1908 1909 /* Return the target section table this target (or the targets 1910 beneath) currently manipulate. */ 1911 1912 extern struct target_section_table *target_get_section_table 1913 (struct target_ops *target); 1914 1915 /* From mem-break.c */ 1916 1917 extern int memory_remove_breakpoint (struct gdbarch *, 1918 struct bp_target_info *); 1919 1920 extern int memory_insert_breakpoint (struct gdbarch *, 1921 struct bp_target_info *); 1922 1923 extern int default_memory_remove_breakpoint (struct gdbarch *, 1924 struct bp_target_info *); 1925 1926 extern int default_memory_insert_breakpoint (struct gdbarch *, 1927 struct bp_target_info *); 1928 1929 1930 /* From target.c */ 1931 1932 extern void initialize_targets (void); 1933 1934 extern void noprocess (void) ATTRIBUTE_NORETURN; 1935 1936 extern void target_require_runnable (void); 1937 1938 extern void find_default_attach (struct target_ops *, char *, int); 1939 1940 extern void find_default_create_inferior (struct target_ops *, 1941 char *, char *, char **, int); 1942 1943 extern struct target_ops *find_run_target (void); 1944 1945 extern struct target_ops *find_target_beneath (struct target_ops *); 1946 1947 /* Read OS data object of type TYPE from the target, and return it in 1948 XML format. The result is NUL-terminated and returned as a string, 1949 allocated using xmalloc. If an error occurs or the transfer is 1950 unsupported, NULL is returned. Empty objects are returned as 1951 allocated but empty strings. */ 1952 1953 extern char *target_get_osdata (const char *type); 1954 1955 1956 /* Stuff that should be shared among the various remote targets. */ 1957 1958 /* Debugging level. 0 is off, and non-zero values mean to print some debug 1959 information (higher values, more information). */ 1960 extern int remote_debug; 1961 1962 /* Speed in bits per second, or -1 which means don't mess with the speed. */ 1963 extern int baud_rate; 1964 /* Timeout limit for response from target. */ 1965 extern int remote_timeout; 1966 1967 1968 1969 /* Set the show memory breakpoints mode to show, and installs a cleanup 1970 to restore it back to the current value. */ 1971 extern struct cleanup *make_show_memory_breakpoints_cleanup (int show); 1972 1973 extern int may_write_registers; 1974 extern int may_write_memory; 1975 extern int may_insert_breakpoints; 1976 extern int may_insert_tracepoints; 1977 extern int may_insert_fast_tracepoints; 1978 extern int may_stop; 1979 1980 extern void update_target_permissions (void); 1981 1982 1983 /* Imported from machine dependent code. */ 1984 1985 /* Blank target vector entries are initialized to target_ignore. */ 1986 void target_ignore (void); 1987 1988 /* See to_supports_btrace in struct target_ops. */ 1989 extern int target_supports_btrace (void); 1990 1991 /* See to_enable_btrace in struct target_ops. */ 1992 extern struct btrace_target_info *target_enable_btrace (ptid_t ptid); 1993 1994 /* See to_disable_btrace in struct target_ops. */ 1995 extern void target_disable_btrace (struct btrace_target_info *btinfo); 1996 1997 /* See to_teardown_btrace in struct target_ops. */ 1998 extern void target_teardown_btrace (struct btrace_target_info *btinfo); 1999 2000 /* See to_read_btrace in struct target_ops. */ 2001 extern VEC (btrace_block_s) *target_read_btrace (struct btrace_target_info *, 2002 enum btrace_read_type); 2003 2004 /* See to_stop_recording in struct target_ops. */ 2005 extern void target_stop_recording (void); 2006 2007 /* See to_info_record in struct target_ops. */ 2008 extern void target_info_record (void); 2009 2010 /* See to_save_record in struct target_ops. */ 2011 extern void target_save_record (char *filename); 2012 2013 /* Query if the target supports deleting the execution log. */ 2014 extern int target_supports_delete_record (void); 2015 2016 /* See to_delete_record in struct target_ops. */ 2017 extern void target_delete_record (void); 2018 2019 /* See to_record_is_replaying in struct target_ops. */ 2020 extern int target_record_is_replaying (void); 2021 2022 /* See to_goto_record_begin in struct target_ops. */ 2023 extern void target_goto_record_begin (void); 2024 2025 /* See to_goto_record_end in struct target_ops. */ 2026 extern void target_goto_record_end (void); 2027 2028 /* See to_goto_record in struct target_ops. */ 2029 extern void target_goto_record (ULONGEST insn); 2030 2031 /* See to_insn_history. */ 2032 extern void target_insn_history (int size, int flags); 2033 2034 /* See to_insn_history_from. */ 2035 extern void target_insn_history_from (ULONGEST from, int size, int flags); 2036 2037 /* See to_insn_history_range. */ 2038 extern void target_insn_history_range (ULONGEST begin, ULONGEST end, int flags); 2039 2040 /* See to_call_history. */ 2041 extern void target_call_history (int size, int flags); 2042 2043 /* See to_call_history_from. */ 2044 extern void target_call_history_from (ULONGEST begin, int size, int flags); 2045 2046 /* See to_call_history_range. */ 2047 extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags); 2048 2049 #endif /* !defined (TARGET_H) */ 2050