| 1 | /* Interface between GDB and target environments, including files and processes |
| 2 | |
| 3 | Copyright (C) 1990-2020 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 | struct dcache_struct; |
| 41 | struct inferior; |
| 42 | |
| 43 | #include "infrun.h" /* For enum exec_direction_kind. */ |
| 44 | #include "breakpoint.h" /* For enum bptype. */ |
| 45 | #include "gdbsupport/scoped_restore.h" |
| 46 | #include "gdbsupport/refcounted-object.h" |
| 47 | |
| 48 | /* This include file defines the interface between the main part |
| 49 | of the debugger, and the part which is target-specific, or |
| 50 | specific to the communications interface between us and the |
| 51 | target. |
| 52 | |
| 53 | A TARGET is an interface between the debugger and a particular |
| 54 | kind of file or process. Targets can be STACKED in STRATA, |
| 55 | so that more than one target can potentially respond to a request. |
| 56 | In particular, memory accesses will walk down the stack of targets |
| 57 | until they find a target that is interested in handling that particular |
| 58 | address. STRATA are artificial boundaries on the stack, within |
| 59 | which particular kinds of targets live. Strata exist so that |
| 60 | people don't get confused by pushing e.g. a process target and then |
| 61 | a file target, and wondering why they can't see the current values |
| 62 | of variables any more (the file target is handling them and they |
| 63 | never get to the process target). So when you push a file target, |
| 64 | it goes into the file stratum, which is always below the process |
| 65 | stratum. |
| 66 | |
| 67 | Note that rather than allow an empty stack, we always have the |
| 68 | dummy target at the bottom stratum, so we can call the target |
| 69 | methods without checking them. */ |
| 70 | |
| 71 | #include "target/target.h" |
| 72 | #include "target/resume.h" |
| 73 | #include "target/wait.h" |
| 74 | #include "target/waitstatus.h" |
| 75 | #include "bfd.h" |
| 76 | #include "symtab.h" |
| 77 | #include "memattr.h" |
| 78 | #include "gdbsupport/gdb_signals.h" |
| 79 | #include "btrace.h" |
| 80 | #include "record.h" |
| 81 | #include "command.h" |
| 82 | #include "disasm.h" |
| 83 | #include "tracepoint.h" |
| 84 | |
| 85 | #include "gdbsupport/break-common.h" /* For enum target_hw_bp_type. */ |
| 86 | |
| 87 | enum strata |
| 88 | { |
| 89 | dummy_stratum, /* The lowest of the low */ |
| 90 | file_stratum, /* Executable files, etc */ |
| 91 | process_stratum, /* Executing processes or core dump files */ |
| 92 | thread_stratum, /* Executing threads */ |
| 93 | record_stratum, /* Support record debugging */ |
| 94 | arch_stratum, /* Architecture overrides */ |
| 95 | debug_stratum /* Target debug. Must be last. */ |
| 96 | }; |
| 97 | |
| 98 | enum thread_control_capabilities |
| 99 | { |
| 100 | tc_none = 0, /* Default: can't control thread execution. */ |
| 101 | tc_schedlock = 1, /* Can lock the thread scheduler. */ |
| 102 | }; |
| 103 | |
| 104 | /* The structure below stores information about a system call. |
| 105 | It is basically used in the "catch syscall" command, and in |
| 106 | every function that gives information about a system call. |
| 107 | |
| 108 | It's also good to mention that its fields represent everything |
| 109 | that we currently know about a syscall in GDB. */ |
| 110 | struct syscall |
| 111 | { |
| 112 | /* The syscall number. */ |
| 113 | int number; |
| 114 | |
| 115 | /* The syscall name. */ |
| 116 | const char *name; |
| 117 | }; |
| 118 | |
| 119 | /* Return a pretty printed form of TARGET_OPTIONS. */ |
| 120 | extern std::string target_options_to_string (int target_options); |
| 121 | |
| 122 | /* Possible types of events that the inferior handler will have to |
| 123 | deal with. */ |
| 124 | enum inferior_event_type |
| 125 | { |
| 126 | /* Process a normal inferior event which will result in target_wait |
| 127 | being called. */ |
| 128 | INF_REG_EVENT, |
| 129 | /* We are called to do stuff after the inferior stops. */ |
| 130 | INF_EXEC_COMPLETE, |
| 131 | }; |
| 132 | \f |
| 133 | /* Target objects which can be transfered using target_read, |
| 134 | target_write, et cetera. */ |
| 135 | |
| 136 | enum target_object |
| 137 | { |
| 138 | /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ |
| 139 | TARGET_OBJECT_AVR, |
| 140 | /* Transfer up-to LEN bytes of memory starting at OFFSET. */ |
| 141 | TARGET_OBJECT_MEMORY, |
| 142 | /* Memory, avoiding GDB's data cache and trusting the executable. |
| 143 | Target implementations of to_xfer_partial never need to handle |
| 144 | this object, and most callers should not use it. */ |
| 145 | TARGET_OBJECT_RAW_MEMORY, |
| 146 | /* Memory known to be part of the target's stack. This is cached even |
| 147 | if it is not in a region marked as such, since it is known to be |
| 148 | "normal" RAM. */ |
| 149 | TARGET_OBJECT_STACK_MEMORY, |
| 150 | /* Memory known to be part of the target code. This is cached even |
| 151 | if it is not in a region marked as such. */ |
| 152 | TARGET_OBJECT_CODE_MEMORY, |
| 153 | /* Kernel Unwind Table. See "ia64-tdep.c". */ |
| 154 | TARGET_OBJECT_UNWIND_TABLE, |
| 155 | /* Transfer auxilliary vector. */ |
| 156 | TARGET_OBJECT_AUXV, |
| 157 | /* StackGhost cookie. See "sparc-tdep.c". */ |
| 158 | TARGET_OBJECT_WCOOKIE, |
| 159 | /* Target memory map in XML format. */ |
| 160 | TARGET_OBJECT_MEMORY_MAP, |
| 161 | /* Flash memory. This object can be used to write contents to |
| 162 | a previously erased flash memory. Using it without erasing |
| 163 | flash can have unexpected results. Addresses are physical |
| 164 | address on target, and not relative to flash start. */ |
| 165 | TARGET_OBJECT_FLASH, |
| 166 | /* Available target-specific features, e.g. registers and coprocessors. |
| 167 | See "target-descriptions.c". ANNEX should never be empty. */ |
| 168 | TARGET_OBJECT_AVAILABLE_FEATURES, |
| 169 | /* Currently loaded libraries, in XML format. */ |
| 170 | TARGET_OBJECT_LIBRARIES, |
| 171 | /* Currently loaded libraries specific for SVR4 systems, in XML format. */ |
| 172 | TARGET_OBJECT_LIBRARIES_SVR4, |
| 173 | /* Currently loaded libraries specific to AIX systems, in XML format. */ |
| 174 | TARGET_OBJECT_LIBRARIES_AIX, |
| 175 | /* Get OS specific data. The ANNEX specifies the type (running |
| 176 | processes, etc.). The data being transfered is expected to follow |
| 177 | the DTD specified in features/osdata.dtd. */ |
| 178 | TARGET_OBJECT_OSDATA, |
| 179 | /* Extra signal info. Usually the contents of `siginfo_t' on unix |
| 180 | platforms. */ |
| 181 | TARGET_OBJECT_SIGNAL_INFO, |
| 182 | /* The list of threads that are being debugged. */ |
| 183 | TARGET_OBJECT_THREADS, |
| 184 | /* Collected static trace data. */ |
| 185 | TARGET_OBJECT_STATIC_TRACE_DATA, |
| 186 | /* Traceframe info, in XML format. */ |
| 187 | TARGET_OBJECT_TRACEFRAME_INFO, |
| 188 | /* Load maps for FDPIC systems. */ |
| 189 | TARGET_OBJECT_FDPIC, |
| 190 | /* Darwin dynamic linker info data. */ |
| 191 | TARGET_OBJECT_DARWIN_DYLD_INFO, |
| 192 | /* OpenVMS Unwind Information Block. */ |
| 193 | TARGET_OBJECT_OPENVMS_UIB, |
| 194 | /* Branch trace data, in XML format. */ |
| 195 | TARGET_OBJECT_BTRACE, |
| 196 | /* Branch trace configuration, in XML format. */ |
| 197 | TARGET_OBJECT_BTRACE_CONF, |
| 198 | /* The pathname of the executable file that was run to create |
| 199 | a specified process. ANNEX should be a string representation |
| 200 | of the process ID of the process in question, in hexadecimal |
| 201 | format. */ |
| 202 | TARGET_OBJECT_EXEC_FILE, |
| 203 | /* FreeBSD virtual memory mappings. */ |
| 204 | TARGET_OBJECT_FREEBSD_VMMAP, |
| 205 | /* FreeBSD process strings. */ |
| 206 | TARGET_OBJECT_FREEBSD_PS_STRINGS, |
| 207 | /* Possible future objects: TARGET_OBJECT_FILE, ... */ |
| 208 | }; |
| 209 | |
| 210 | /* Possible values returned by target_xfer_partial, etc. */ |
| 211 | |
| 212 | enum target_xfer_status |
| 213 | { |
| 214 | /* Some bytes are transferred. */ |
| 215 | TARGET_XFER_OK = 1, |
| 216 | |
| 217 | /* No further transfer is possible. */ |
| 218 | TARGET_XFER_EOF = 0, |
| 219 | |
| 220 | /* The piece of the object requested is unavailable. */ |
| 221 | TARGET_XFER_UNAVAILABLE = 2, |
| 222 | |
| 223 | /* Generic I/O error. Note that it's important that this is '-1', |
| 224 | as we still have target_xfer-related code returning hardcoded |
| 225 | '-1' on error. */ |
| 226 | TARGET_XFER_E_IO = -1, |
| 227 | |
| 228 | /* Keep list in sync with target_xfer_status_to_string. */ |
| 229 | }; |
| 230 | |
| 231 | /* Return the string form of STATUS. */ |
| 232 | |
| 233 | extern const char * |
| 234 | target_xfer_status_to_string (enum target_xfer_status status); |
| 235 | |
| 236 | typedef enum target_xfer_status |
| 237 | target_xfer_partial_ftype (struct target_ops *ops, |
| 238 | enum target_object object, |
| 239 | const char *annex, |
| 240 | gdb_byte *readbuf, |
| 241 | const gdb_byte *writebuf, |
| 242 | ULONGEST offset, |
| 243 | ULONGEST len, |
| 244 | ULONGEST *xfered_len); |
| 245 | |
| 246 | enum target_xfer_status |
| 247 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
| 248 | const gdb_byte *writebuf, ULONGEST memaddr, |
| 249 | LONGEST len, ULONGEST *xfered_len); |
| 250 | |
| 251 | /* Request that OPS transfer up to LEN addressable units of the target's |
| 252 | OBJECT. When reading from a memory object, the size of an addressable unit |
| 253 | is architecture dependent and can be found using |
| 254 | gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1 |
| 255 | byte long. BUF should point to a buffer large enough to hold the read data, |
| 256 | taking into account the addressable unit size. The OFFSET, for a seekable |
| 257 | object, specifies the starting point. The ANNEX can be used to provide |
| 258 | additional data-specific information to the target. |
| 259 | |
| 260 | Return the number of addressable units actually transferred, or a negative |
| 261 | error code (an 'enum target_xfer_error' value) if the transfer is not |
| 262 | supported or otherwise fails. Return of a positive value less than |
| 263 | LEN indicates that no further transfer is possible. Unlike the raw |
| 264 | to_xfer_partial interface, callers of these functions do not need |
| 265 | to retry partial transfers. */ |
| 266 | |
| 267 | extern LONGEST target_read (struct target_ops *ops, |
| 268 | enum target_object object, |
| 269 | const char *annex, gdb_byte *buf, |
| 270 | ULONGEST offset, LONGEST len); |
| 271 | |
| 272 | struct memory_read_result |
| 273 | { |
| 274 | memory_read_result (ULONGEST begin_, ULONGEST end_, |
| 275 | gdb::unique_xmalloc_ptr<gdb_byte> &&data_) |
| 276 | : begin (begin_), |
| 277 | end (end_), |
| 278 | data (std::move (data_)) |
| 279 | { |
| 280 | } |
| 281 | |
| 282 | ~memory_read_result () = default; |
| 283 | |
| 284 | memory_read_result (memory_read_result &&other) = default; |
| 285 | |
| 286 | DISABLE_COPY_AND_ASSIGN (memory_read_result); |
| 287 | |
| 288 | /* First address that was read. */ |
| 289 | ULONGEST begin; |
| 290 | /* Past-the-end address. */ |
| 291 | ULONGEST end; |
| 292 | /* The data. */ |
| 293 | gdb::unique_xmalloc_ptr<gdb_byte> data; |
| 294 | }; |
| 295 | |
| 296 | extern std::vector<memory_read_result> read_memory_robust |
| 297 | (struct target_ops *ops, const ULONGEST offset, const LONGEST len); |
| 298 | |
| 299 | /* Request that OPS transfer up to LEN addressable units from BUF to the |
| 300 | target's OBJECT. When writing to a memory object, the addressable unit |
| 301 | size is architecture dependent and can be found using |
| 302 | gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1 |
| 303 | byte long. The OFFSET, for a seekable object, specifies the starting point. |
| 304 | The ANNEX can be used to provide additional data-specific information to |
| 305 | the target. |
| 306 | |
| 307 | Return the number of addressable units actually transferred, or a negative |
| 308 | error code (an 'enum target_xfer_status' value) if the transfer is not |
| 309 | supported or otherwise fails. Return of a positive value less than |
| 310 | LEN indicates that no further transfer is possible. Unlike the raw |
| 311 | to_xfer_partial interface, callers of these functions do not need to |
| 312 | retry partial transfers. */ |
| 313 | |
| 314 | extern LONGEST target_write (struct target_ops *ops, |
| 315 | enum target_object object, |
| 316 | const char *annex, const gdb_byte *buf, |
| 317 | ULONGEST offset, LONGEST len); |
| 318 | |
| 319 | /* Similar to target_write, except that it also calls PROGRESS with |
| 320 | the number of bytes written and the opaque BATON after every |
| 321 | successful partial write (and before the first write). This is |
| 322 | useful for progress reporting and user interaction while writing |
| 323 | data. To abort the transfer, the progress callback can throw an |
| 324 | exception. */ |
| 325 | |
| 326 | LONGEST target_write_with_progress (struct target_ops *ops, |
| 327 | enum target_object object, |
| 328 | const char *annex, const gdb_byte *buf, |
| 329 | ULONGEST offset, LONGEST len, |
| 330 | void (*progress) (ULONGEST, void *), |
| 331 | void *baton); |
| 332 | |
| 333 | /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will be read |
| 334 | using OPS. The return value will be uninstantiated if the transfer fails or |
| 335 | is not supported. |
| 336 | |
| 337 | This method should be used for objects sufficiently small to store |
| 338 | in a single xmalloc'd buffer, when no fixed bound on the object's |
| 339 | size is known in advance. Don't try to read TARGET_OBJECT_MEMORY |
| 340 | through this function. */ |
| 341 | |
| 342 | extern gdb::optional<gdb::byte_vector> target_read_alloc |
| 343 | (struct target_ops *ops, enum target_object object, const char *annex); |
| 344 | |
| 345 | /* Read OBJECT/ANNEX using OPS. The result is a NUL-terminated character vector |
| 346 | (therefore usable as a NUL-terminated string). If an error occurs or the |
| 347 | transfer is unsupported, the return value will be uninstantiated. Empty |
| 348 | objects are returned as allocated but empty strings. Therefore, on success, |
| 349 | the returned vector is guaranteed to have at least one element. A warning is |
| 350 | issued if the result contains any embedded NUL bytes. */ |
| 351 | |
| 352 | extern gdb::optional<gdb::char_vector> target_read_stralloc |
| 353 | (struct target_ops *ops, enum target_object object, const char *annex); |
| 354 | |
| 355 | /* See target_ops->to_xfer_partial. */ |
| 356 | extern target_xfer_partial_ftype target_xfer_partial; |
| 357 | |
| 358 | /* Wrappers to target read/write that perform memory transfers. They |
| 359 | throw an error if the memory transfer fails. |
| 360 | |
| 361 | NOTE: cagney/2003-10-23: The naming schema is lifted from |
| 362 | "frame.h". The parameter order is lifted from get_frame_memory, |
| 363 | which in turn lifted it from read_memory. */ |
| 364 | |
| 365 | extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, |
| 366 | gdb_byte *buf, LONGEST len); |
| 367 | extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, |
| 368 | CORE_ADDR addr, int len, |
| 369 | enum bfd_endian byte_order); |
| 370 | \f |
| 371 | struct thread_info; /* fwd decl for parameter list below: */ |
| 372 | |
| 373 | /* The type of the callback to the to_async method. */ |
| 374 | |
| 375 | typedef void async_callback_ftype (enum inferior_event_type event_type, |
| 376 | void *context); |
| 377 | |
| 378 | /* Normally target debug printing is purely type-based. However, |
| 379 | sometimes it is necessary to override the debug printing on a |
| 380 | per-argument basis. This macro can be used, attribute-style, to |
| 381 | name the target debug printing function for a particular method |
| 382 | argument. FUNC is the name of the function. The macro's |
| 383 | definition is empty because it is only used by the |
| 384 | make-target-delegates script. */ |
| 385 | |
| 386 | #define TARGET_DEBUG_PRINTER(FUNC) |
| 387 | |
| 388 | /* These defines are used to mark target_ops methods. The script |
| 389 | make-target-delegates scans these and auto-generates the base |
| 390 | method implementations. There are four macros that can be used: |
| 391 | |
| 392 | 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method |
| 393 | does nothing. This is only valid if the method return type is |
| 394 | 'void'. |
| 395 | |
| 396 | 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like |
| 397 | 'tcomplain ()'. The base method simply makes this call, which is |
| 398 | assumed not to return. |
| 399 | |
| 400 | 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The |
| 401 | base method returns this expression's value. |
| 402 | |
| 403 | 4. TARGET_DEFAULT_FUNC. The argument is the name of a function. |
| 404 | make-target-delegates does not generate a base method in this case, |
| 405 | but instead uses the argument function as the base method. */ |
| 406 | |
| 407 | #define TARGET_DEFAULT_IGNORE() |
| 408 | #define TARGET_DEFAULT_NORETURN(ARG) |
| 409 | #define TARGET_DEFAULT_RETURN(ARG) |
| 410 | #define TARGET_DEFAULT_FUNC(ARG) |
| 411 | |
| 412 | /* Each target that can be activated with "target TARGET_NAME" passes |
| 413 | the address of one of these objects to add_target, which uses the |
| 414 | object's address as unique identifier, and registers the "target |
| 415 | TARGET_NAME" command using SHORTNAME as target name. */ |
| 416 | |
| 417 | struct target_info |
| 418 | { |
| 419 | /* Name of this target. */ |
| 420 | const char *shortname; |
| 421 | |
| 422 | /* Name for printing. */ |
| 423 | const char *longname; |
| 424 | |
| 425 | /* Documentation. Does not include trailing newline, and starts |
| 426 | with a one-line description (probably similar to longname). */ |
| 427 | const char *doc; |
| 428 | }; |
| 429 | |
| 430 | struct target_ops |
| 431 | : public refcounted_object |
| 432 | { |
| 433 | /* Return this target's stratum. */ |
| 434 | virtual strata stratum () const = 0; |
| 435 | |
| 436 | /* To the target under this one. */ |
| 437 | target_ops *beneath () const; |
| 438 | |
| 439 | /* Free resources associated with the target. Note that singleton |
| 440 | targets, like e.g., native targets, are global objects, not |
| 441 | heap allocated, and are thus only deleted on GDB exit. The |
| 442 | main teardown entry point is the "close" method, below. */ |
| 443 | virtual ~target_ops () {} |
| 444 | |
| 445 | /* Return a reference to this target's unique target_info |
| 446 | object. */ |
| 447 | virtual const target_info &info () const = 0; |
| 448 | |
| 449 | /* Name this target type. */ |
| 450 | const char *shortname () const |
| 451 | { return info ().shortname; } |
| 452 | |
| 453 | const char *longname () const |
| 454 | { return info ().longname; } |
| 455 | |
| 456 | /* Close the target. This is where the target can handle |
| 457 | teardown. Heap-allocated targets should delete themselves |
| 458 | before returning. */ |
| 459 | virtual void close (); |
| 460 | |
| 461 | /* Attaches to a process on the target side. Arguments are as |
| 462 | passed to the `attach' command by the user. This routine can |
| 463 | be called when the target is not on the target-stack, if the |
| 464 | target_ops::can_run method returns 1; in that case, it must push |
| 465 | itself onto the stack. Upon exit, the target should be ready |
| 466 | for normal operations, and should be ready to deliver the |
| 467 | status of the process immediately (without waiting) to an |
| 468 | upcoming target_wait call. */ |
| 469 | virtual bool can_attach (); |
| 470 | virtual void attach (const char *, int); |
| 471 | virtual void post_attach (int) |
| 472 | TARGET_DEFAULT_IGNORE (); |
| 473 | virtual void detach (inferior *, int) |
| 474 | TARGET_DEFAULT_IGNORE (); |
| 475 | virtual void disconnect (const char *, int) |
| 476 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 477 | virtual void resume (ptid_t, |
| 478 | int TARGET_DEBUG_PRINTER (target_debug_print_step), |
| 479 | enum gdb_signal) |
| 480 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 481 | virtual void commit_resume () |
| 482 | TARGET_DEFAULT_IGNORE (); |
| 483 | /* See target_wait's description. Note that implementations of |
| 484 | this method must not assume that inferior_ptid on entry is |
| 485 | pointing at the thread or inferior that ends up reporting an |
| 486 | event. The reported event could be for some other thread in |
| 487 | the current inferior or even for a different process of the |
| 488 | current target. inferior_ptid may also be null_ptid on |
| 489 | entry. */ |
| 490 | virtual ptid_t wait (ptid_t, struct target_waitstatus *, |
| 491 | int TARGET_DEBUG_PRINTER (target_debug_print_options)) |
| 492 | TARGET_DEFAULT_FUNC (default_target_wait); |
| 493 | virtual void fetch_registers (struct regcache *, int) |
| 494 | TARGET_DEFAULT_IGNORE (); |
| 495 | virtual void store_registers (struct regcache *, int) |
| 496 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 497 | virtual void prepare_to_store (struct regcache *) |
| 498 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 499 | |
| 500 | virtual void files_info () |
| 501 | TARGET_DEFAULT_IGNORE (); |
| 502 | virtual int insert_breakpoint (struct gdbarch *, |
| 503 | struct bp_target_info *) |
| 504 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 505 | virtual int remove_breakpoint (struct gdbarch *, |
| 506 | struct bp_target_info *, |
| 507 | enum remove_bp_reason) |
| 508 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 509 | |
| 510 | /* Returns true if the target stopped because it executed a |
| 511 | software breakpoint. This is necessary for correct background |
| 512 | execution / non-stop mode operation, and for correct PC |
| 513 | adjustment on targets where the PC needs to be adjusted when a |
| 514 | software breakpoint triggers. In these modes, by the time GDB |
| 515 | processes a breakpoint event, the breakpoint may already be |
| 516 | done from the target, so GDB needs to be able to tell whether |
| 517 | it should ignore the event and whether it should adjust the PC. |
| 518 | See adjust_pc_after_break. */ |
| 519 | virtual bool stopped_by_sw_breakpoint () |
| 520 | TARGET_DEFAULT_RETURN (false); |
| 521 | /* Returns true if the above method is supported. */ |
| 522 | virtual bool supports_stopped_by_sw_breakpoint () |
| 523 | TARGET_DEFAULT_RETURN (false); |
| 524 | |
| 525 | /* Returns true if the target stopped for a hardware breakpoint. |
| 526 | Likewise, if the target supports hardware breakpoints, this |
| 527 | method is necessary for correct background execution / non-stop |
| 528 | mode operation. Even though hardware breakpoints do not |
| 529 | require PC adjustment, GDB needs to be able to tell whether the |
| 530 | hardware breakpoint event is a delayed event for a breakpoint |
| 531 | that is already gone and should thus be ignored. */ |
| 532 | virtual bool stopped_by_hw_breakpoint () |
| 533 | TARGET_DEFAULT_RETURN (false); |
| 534 | /* Returns true if the above method is supported. */ |
| 535 | virtual bool supports_stopped_by_hw_breakpoint () |
| 536 | TARGET_DEFAULT_RETURN (false); |
| 537 | |
| 538 | virtual int can_use_hw_breakpoint (enum bptype, int, int) |
| 539 | TARGET_DEFAULT_RETURN (0); |
| 540 | virtual int ranged_break_num_registers () |
| 541 | TARGET_DEFAULT_RETURN (-1); |
| 542 | virtual int insert_hw_breakpoint (struct gdbarch *, |
| 543 | struct bp_target_info *) |
| 544 | TARGET_DEFAULT_RETURN (-1); |
| 545 | virtual int remove_hw_breakpoint (struct gdbarch *, |
| 546 | struct bp_target_info *) |
| 547 | TARGET_DEFAULT_RETURN (-1); |
| 548 | |
| 549 | /* Documentation of what the two routines below are expected to do is |
| 550 | provided with the corresponding target_* macros. */ |
| 551 | virtual int remove_watchpoint (CORE_ADDR, int, |
| 552 | enum target_hw_bp_type, struct expression *) |
| 553 | TARGET_DEFAULT_RETURN (-1); |
| 554 | virtual int insert_watchpoint (CORE_ADDR, int, |
| 555 | enum target_hw_bp_type, struct expression *) |
| 556 | TARGET_DEFAULT_RETURN (-1); |
| 557 | |
| 558 | virtual int insert_mask_watchpoint (CORE_ADDR, CORE_ADDR, |
| 559 | enum target_hw_bp_type) |
| 560 | TARGET_DEFAULT_RETURN (1); |
| 561 | virtual int remove_mask_watchpoint (CORE_ADDR, CORE_ADDR, |
| 562 | enum target_hw_bp_type) |
| 563 | TARGET_DEFAULT_RETURN (1); |
| 564 | virtual bool stopped_by_watchpoint () |
| 565 | TARGET_DEFAULT_RETURN (false); |
| 566 | virtual bool have_steppable_watchpoint () |
| 567 | TARGET_DEFAULT_RETURN (false); |
| 568 | virtual bool stopped_data_address (CORE_ADDR *) |
| 569 | TARGET_DEFAULT_RETURN (false); |
| 570 | virtual bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) |
| 571 | TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range); |
| 572 | |
| 573 | /* Documentation of this routine is provided with the corresponding |
| 574 | target_* macro. */ |
| 575 | virtual int region_ok_for_hw_watchpoint (CORE_ADDR, int) |
| 576 | TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint); |
| 577 | |
| 578 | virtual bool can_accel_watchpoint_condition (CORE_ADDR, int, int, |
| 579 | struct expression *) |
| 580 | TARGET_DEFAULT_RETURN (false); |
| 581 | virtual int masked_watch_num_registers (CORE_ADDR, CORE_ADDR) |
| 582 | TARGET_DEFAULT_RETURN (-1); |
| 583 | |
| 584 | /* Return 1 for sure target can do single step. Return -1 for |
| 585 | unknown. Return 0 for target can't do. */ |
| 586 | virtual int can_do_single_step () |
| 587 | TARGET_DEFAULT_RETURN (-1); |
| 588 | |
| 589 | virtual bool supports_terminal_ours () |
| 590 | TARGET_DEFAULT_RETURN (false); |
| 591 | virtual void terminal_init () |
| 592 | TARGET_DEFAULT_IGNORE (); |
| 593 | virtual void terminal_inferior () |
| 594 | TARGET_DEFAULT_IGNORE (); |
| 595 | virtual void terminal_save_inferior () |
| 596 | TARGET_DEFAULT_IGNORE (); |
| 597 | virtual void terminal_ours_for_output () |
| 598 | TARGET_DEFAULT_IGNORE (); |
| 599 | virtual void terminal_ours () |
| 600 | TARGET_DEFAULT_IGNORE (); |
| 601 | virtual void terminal_info (const char *, int) |
| 602 | TARGET_DEFAULT_FUNC (default_terminal_info); |
| 603 | virtual void kill () |
| 604 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 605 | virtual void load (const char *, int) |
| 606 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 607 | /* Start an inferior process and set inferior_ptid to its pid. |
| 608 | EXEC_FILE is the file to run. |
| 609 | ALLARGS is a string containing the arguments to the program. |
| 610 | ENV is the environment vector to pass. Errors reported with error(). |
| 611 | On VxWorks and various standalone systems, we ignore exec_file. */ |
| 612 | virtual bool can_create_inferior (); |
| 613 | virtual void create_inferior (const char *, const std::string &, |
| 614 | char **, int); |
| 615 | virtual void post_startup_inferior (ptid_t) |
| 616 | TARGET_DEFAULT_IGNORE (); |
| 617 | virtual int insert_fork_catchpoint (int) |
| 618 | TARGET_DEFAULT_RETURN (1); |
| 619 | virtual int remove_fork_catchpoint (int) |
| 620 | TARGET_DEFAULT_RETURN (1); |
| 621 | virtual int insert_vfork_catchpoint (int) |
| 622 | TARGET_DEFAULT_RETURN (1); |
| 623 | virtual int remove_vfork_catchpoint (int) |
| 624 | TARGET_DEFAULT_RETURN (1); |
| 625 | virtual bool follow_fork (bool, bool) |
| 626 | TARGET_DEFAULT_FUNC (default_follow_fork); |
| 627 | virtual int insert_exec_catchpoint (int) |
| 628 | TARGET_DEFAULT_RETURN (1); |
| 629 | virtual int remove_exec_catchpoint (int) |
| 630 | TARGET_DEFAULT_RETURN (1); |
| 631 | virtual void follow_exec (struct inferior *, const char *) |
| 632 | TARGET_DEFAULT_IGNORE (); |
| 633 | virtual int set_syscall_catchpoint (int, bool, int, |
| 634 | gdb::array_view<const int>) |
| 635 | TARGET_DEFAULT_RETURN (1); |
| 636 | virtual void mourn_inferior () |
| 637 | TARGET_DEFAULT_FUNC (default_mourn_inferior); |
| 638 | |
| 639 | /* Note that can_run is special and can be invoked on an unpushed |
| 640 | target. Targets defining this method must also define |
| 641 | to_can_async_p and to_supports_non_stop. */ |
| 642 | virtual bool can_run (); |
| 643 | |
| 644 | /* Documentation of this routine is provided with the corresponding |
| 645 | target_* macro. */ |
| 646 | virtual void pass_signals (gdb::array_view<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals)) |
| 647 | TARGET_DEFAULT_IGNORE (); |
| 648 | |
| 649 | /* Documentation of this routine is provided with the |
| 650 | corresponding target_* function. */ |
| 651 | virtual void program_signals (gdb::array_view<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals)) |
| 652 | TARGET_DEFAULT_IGNORE (); |
| 653 | |
| 654 | virtual bool thread_alive (ptid_t ptid) |
| 655 | TARGET_DEFAULT_RETURN (false); |
| 656 | virtual void update_thread_list () |
| 657 | TARGET_DEFAULT_IGNORE (); |
| 658 | virtual std::string pid_to_str (ptid_t) |
| 659 | TARGET_DEFAULT_FUNC (default_pid_to_str); |
| 660 | virtual const char *extra_thread_info (thread_info *) |
| 661 | TARGET_DEFAULT_RETURN (NULL); |
| 662 | virtual const char *thread_name (thread_info *) |
| 663 | TARGET_DEFAULT_RETURN (NULL); |
| 664 | virtual thread_info *thread_handle_to_thread_info (const gdb_byte *, |
| 665 | int, |
| 666 | inferior *inf) |
| 667 | TARGET_DEFAULT_RETURN (NULL); |
| 668 | /* See target_thread_info_to_thread_handle. */ |
| 669 | virtual gdb::byte_vector thread_info_to_thread_handle (struct thread_info *) |
| 670 | TARGET_DEFAULT_RETURN (gdb::byte_vector ()); |
| 671 | virtual void stop (ptid_t) |
| 672 | TARGET_DEFAULT_IGNORE (); |
| 673 | virtual void interrupt () |
| 674 | TARGET_DEFAULT_IGNORE (); |
| 675 | virtual void pass_ctrlc () |
| 676 | TARGET_DEFAULT_FUNC (default_target_pass_ctrlc); |
| 677 | virtual void rcmd (const char *command, struct ui_file *output) |
| 678 | TARGET_DEFAULT_FUNC (default_rcmd); |
| 679 | virtual char *pid_to_exec_file (int pid) |
| 680 | TARGET_DEFAULT_RETURN (NULL); |
| 681 | virtual void log_command (const char *) |
| 682 | TARGET_DEFAULT_IGNORE (); |
| 683 | virtual struct target_section_table *get_section_table () |
| 684 | TARGET_DEFAULT_RETURN (NULL); |
| 685 | |
| 686 | /* Provide default values for all "must have" methods. */ |
| 687 | virtual bool has_all_memory () { return false; } |
| 688 | virtual bool has_memory () { return false; } |
| 689 | virtual bool has_stack () { return false; } |
| 690 | virtual bool has_registers () { return false; } |
| 691 | virtual bool has_execution (inferior *inf) { return false; } |
| 692 | |
| 693 | /* Control thread execution. */ |
| 694 | virtual thread_control_capabilities get_thread_control_capabilities () |
| 695 | TARGET_DEFAULT_RETURN (tc_none); |
| 696 | virtual bool attach_no_wait () |
| 697 | TARGET_DEFAULT_RETURN (0); |
| 698 | /* This method must be implemented in some situations. See the |
| 699 | comment on 'can_run'. */ |
| 700 | virtual bool can_async_p () |
| 701 | TARGET_DEFAULT_RETURN (false); |
| 702 | virtual bool is_async_p () |
| 703 | TARGET_DEFAULT_RETURN (false); |
| 704 | virtual void async (int) |
| 705 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 706 | virtual int async_wait_fd () |
| 707 | TARGET_DEFAULT_NORETURN (noprocess ()); |
| 708 | virtual void thread_events (int) |
| 709 | TARGET_DEFAULT_IGNORE (); |
| 710 | /* This method must be implemented in some situations. See the |
| 711 | comment on 'can_run'. */ |
| 712 | virtual bool supports_non_stop () |
| 713 | TARGET_DEFAULT_RETURN (false); |
| 714 | /* Return true if the target operates in non-stop mode even with |
| 715 | "set non-stop off". */ |
| 716 | virtual bool always_non_stop_p () |
| 717 | TARGET_DEFAULT_RETURN (false); |
| 718 | /* find_memory_regions support method for gcore */ |
| 719 | virtual int find_memory_regions (find_memory_region_ftype func, void *data) |
| 720 | TARGET_DEFAULT_FUNC (dummy_find_memory_regions); |
| 721 | /* make_corefile_notes support method for gcore */ |
| 722 | virtual char *make_corefile_notes (bfd *, int *) |
| 723 | TARGET_DEFAULT_FUNC (dummy_make_corefile_notes); |
| 724 | /* get_bookmark support method for bookmarks */ |
| 725 | virtual gdb_byte *get_bookmark (const char *, int) |
| 726 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 727 | /* goto_bookmark support method for bookmarks */ |
| 728 | virtual void goto_bookmark (const gdb_byte *, int) |
| 729 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 730 | /* Return the thread-local address at OFFSET in the |
| 731 | thread-local storage for the thread PTID and the shared library |
| 732 | or executable file given by LOAD_MODULE_ADDR. If that block of |
| 733 | thread-local storage hasn't been allocated yet, this function |
| 734 | may throw an error. LOAD_MODULE_ADDR may be zero for statically |
| 735 | linked multithreaded inferiors. */ |
| 736 | virtual CORE_ADDR get_thread_local_address (ptid_t ptid, |
| 737 | CORE_ADDR load_module_addr, |
| 738 | CORE_ADDR offset) |
| 739 | TARGET_DEFAULT_NORETURN (generic_tls_error ()); |
| 740 | |
| 741 | /* Request that OPS transfer up to LEN addressable units of the target's |
| 742 | OBJECT. When reading from a memory object, the size of an addressable |
| 743 | unit is architecture dependent and can be found using |
| 744 | gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is |
| 745 | 1 byte long. The OFFSET, for a seekable object, specifies the |
| 746 | starting point. The ANNEX can be used to provide additional |
| 747 | data-specific information to the target. |
| 748 | |
| 749 | Return the transferred status, error or OK (an |
| 750 | 'enum target_xfer_status' value). Save the number of addressable units |
| 751 | actually transferred in *XFERED_LEN if transfer is successful |
| 752 | (TARGET_XFER_OK) or the number unavailable units if the requested |
| 753 | data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN |
| 754 | smaller than LEN does not indicate the end of the object, only |
| 755 | the end of the transfer; higher level code should continue |
| 756 | transferring if desired. This is handled in target.c. |
| 757 | |
| 758 | The interface does not support a "retry" mechanism. Instead it |
| 759 | assumes that at least one addressable unit will be transfered on each |
| 760 | successful call. |
| 761 | |
| 762 | NOTE: cagney/2003-10-17: The current interface can lead to |
| 763 | fragmented transfers. Lower target levels should not implement |
| 764 | hacks, such as enlarging the transfer, in an attempt to |
| 765 | compensate for this. Instead, the target stack should be |
| 766 | extended so that it implements supply/collect methods and a |
| 767 | look-aside object cache. With that available, the lowest |
| 768 | target can safely and freely "push" data up the stack. |
| 769 | |
| 770 | See target_read and target_write for more information. One, |
| 771 | and only one, of readbuf or writebuf must be non-NULL. */ |
| 772 | |
| 773 | virtual enum target_xfer_status xfer_partial (enum target_object object, |
| 774 | const char *annex, |
| 775 | gdb_byte *readbuf, |
| 776 | const gdb_byte *writebuf, |
| 777 | ULONGEST offset, ULONGEST len, |
| 778 | ULONGEST *xfered_len) |
| 779 | TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO); |
| 780 | |
| 781 | /* Return the limit on the size of any single memory transfer |
| 782 | for the target. */ |
| 783 | |
| 784 | virtual ULONGEST get_memory_xfer_limit () |
| 785 | TARGET_DEFAULT_RETURN (ULONGEST_MAX); |
| 786 | |
| 787 | /* Returns the memory map for the target. A return value of NULL |
| 788 | means that no memory map is available. If a memory address |
| 789 | does not fall within any returned regions, it's assumed to be |
| 790 | RAM. The returned memory regions should not overlap. |
| 791 | |
| 792 | The order of regions does not matter; target_memory_map will |
| 793 | sort regions by starting address. For that reason, this |
| 794 | function should not be called directly except via |
| 795 | target_memory_map. |
| 796 | |
| 797 | This method should not cache data; if the memory map could |
| 798 | change unexpectedly, it should be invalidated, and higher |
| 799 | layers will re-fetch it. */ |
| 800 | virtual std::vector<mem_region> memory_map () |
| 801 | TARGET_DEFAULT_RETURN (std::vector<mem_region> ()); |
| 802 | |
| 803 | /* Erases the region of flash memory starting at ADDRESS, of |
| 804 | length LENGTH. |
| 805 | |
| 806 | Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned |
| 807 | on flash block boundaries, as reported by 'to_memory_map'. */ |
| 808 | virtual void flash_erase (ULONGEST address, LONGEST length) |
| 809 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 810 | |
| 811 | /* Finishes a flash memory write sequence. After this operation |
| 812 | all flash memory should be available for writing and the result |
| 813 | of reading from areas written by 'to_flash_write' should be |
| 814 | equal to what was written. */ |
| 815 | virtual void flash_done () |
| 816 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 817 | |
| 818 | /* Describe the architecture-specific features of this target. If |
| 819 | OPS doesn't have a description, this should delegate to the |
| 820 | "beneath" target. Returns the description found, or NULL if no |
| 821 | description was available. */ |
| 822 | virtual const struct target_desc *read_description () |
| 823 | TARGET_DEFAULT_RETURN (NULL); |
| 824 | |
| 825 | /* Build the PTID of the thread on which a given task is running, |
| 826 | based on LWP and THREAD. These values are extracted from the |
| 827 | task Private_Data section of the Ada Task Control Block, and |
| 828 | their interpretation depends on the target. */ |
| 829 | virtual ptid_t get_ada_task_ptid (long lwp, long thread) |
| 830 | TARGET_DEFAULT_FUNC (default_get_ada_task_ptid); |
| 831 | |
| 832 | /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR. |
| 833 | Return 0 if *READPTR is already at the end of the buffer. |
| 834 | Return -1 if there is insufficient buffer for a whole entry. |
| 835 | Return 1 if an entry was read into *TYPEP and *VALP. */ |
| 836 | virtual int auxv_parse (gdb_byte **readptr, |
| 837 | gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp) |
| 838 | TARGET_DEFAULT_FUNC (default_auxv_parse); |
| 839 | |
| 840 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
| 841 | sequence of bytes in PATTERN with length PATTERN_LEN. |
| 842 | |
| 843 | The result is 1 if found, 0 if not found, and -1 if there was an error |
| 844 | requiring halting of the search (e.g. memory read error). |
| 845 | If the pattern is found the address is recorded in FOUND_ADDRP. */ |
| 846 | virtual int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, |
| 847 | const gdb_byte *pattern, ULONGEST pattern_len, |
| 848 | CORE_ADDR *found_addrp) |
| 849 | TARGET_DEFAULT_FUNC (default_search_memory); |
| 850 | |
| 851 | /* Can target execute in reverse? */ |
| 852 | virtual bool can_execute_reverse () |
| 853 | TARGET_DEFAULT_RETURN (false); |
| 854 | |
| 855 | /* The direction the target is currently executing. Must be |
| 856 | implemented on targets that support reverse execution and async |
| 857 | mode. The default simply returns forward execution. */ |
| 858 | virtual enum exec_direction_kind execution_direction () |
| 859 | TARGET_DEFAULT_FUNC (default_execution_direction); |
| 860 | |
| 861 | /* Does this target support debugging multiple processes |
| 862 | simultaneously? */ |
| 863 | virtual bool supports_multi_process () |
| 864 | TARGET_DEFAULT_RETURN (false); |
| 865 | |
| 866 | /* Does this target support enabling and disabling tracepoints while a trace |
| 867 | experiment is running? */ |
| 868 | virtual bool supports_enable_disable_tracepoint () |
| 869 | TARGET_DEFAULT_RETURN (false); |
| 870 | |
| 871 | /* Does this target support disabling address space randomization? */ |
| 872 | virtual bool supports_disable_randomization () |
| 873 | TARGET_DEFAULT_FUNC (find_default_supports_disable_randomization); |
| 874 | |
| 875 | /* Does this target support the tracenz bytecode for string collection? */ |
| 876 | virtual bool supports_string_tracing () |
| 877 | TARGET_DEFAULT_RETURN (false); |
| 878 | |
| 879 | /* Does this target support evaluation of breakpoint conditions on its |
| 880 | end? */ |
| 881 | virtual bool supports_evaluation_of_breakpoint_conditions () |
| 882 | TARGET_DEFAULT_RETURN (false); |
| 883 | |
| 884 | /* Does this target support evaluation of breakpoint commands on its |
| 885 | end? */ |
| 886 | virtual bool can_run_breakpoint_commands () |
| 887 | TARGET_DEFAULT_RETURN (false); |
| 888 | |
| 889 | /* Determine current architecture of thread PTID. |
| 890 | |
| 891 | The target is supposed to determine the architecture of the code where |
| 892 | the target is currently stopped at. The architecture information is |
| 893 | used to perform decr_pc_after_break adjustment, and also to determine |
| 894 | the frame architecture of the innermost frame. ptrace operations need to |
| 895 | operate according to target_gdbarch (). */ |
| 896 | virtual struct gdbarch *thread_architecture (ptid_t) |
| 897 | TARGET_DEFAULT_RETURN (NULL); |
| 898 | |
| 899 | /* Determine current address space of thread PTID. */ |
| 900 | virtual struct address_space *thread_address_space (ptid_t) |
| 901 | TARGET_DEFAULT_RETURN (NULL); |
| 902 | |
| 903 | /* Target file operations. */ |
| 904 | |
| 905 | /* Return nonzero if the filesystem seen by the current inferior |
| 906 | is the local filesystem, zero otherwise. */ |
| 907 | virtual bool filesystem_is_local () |
| 908 | TARGET_DEFAULT_RETURN (true); |
| 909 | |
| 910 | /* Open FILENAME on the target, in the filesystem as seen by INF, |
| 911 | using FLAGS and MODE. If INF is NULL, use the filesystem seen |
| 912 | by the debugger (GDB or, for remote targets, the remote stub). |
| 913 | If WARN_IF_SLOW is nonzero, print a warning message if the file |
| 914 | is being accessed over a link that may be slow. Return a |
| 915 | target file descriptor, or -1 if an error occurs (and set |
| 916 | *TARGET_ERRNO). */ |
| 917 | virtual int fileio_open (struct inferior *inf, const char *filename, |
| 918 | int flags, int mode, int warn_if_slow, |
| 919 | int *target_errno); |
| 920 | |
| 921 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. |
| 922 | Return the number of bytes written, or -1 if an error occurs |
| 923 | (and set *TARGET_ERRNO). */ |
| 924 | virtual int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, |
| 925 | ULONGEST offset, int *target_errno); |
| 926 | |
| 927 | /* Read up to LEN bytes FD on the target into READ_BUF. |
| 928 | Return the number of bytes read, or -1 if an error occurs |
| 929 | (and set *TARGET_ERRNO). */ |
| 930 | virtual int fileio_pread (int fd, gdb_byte *read_buf, int len, |
| 931 | ULONGEST offset, int *target_errno); |
| 932 | |
| 933 | /* Get information about the file opened as FD and put it in |
| 934 | SB. Return 0 on success, or -1 if an error occurs (and set |
| 935 | *TARGET_ERRNO). */ |
| 936 | virtual int fileio_fstat (int fd, struct stat *sb, int *target_errno); |
| 937 | |
| 938 | /* Close FD on the target. Return 0, or -1 if an error occurs |
| 939 | (and set *TARGET_ERRNO). */ |
| 940 | virtual int fileio_close (int fd, int *target_errno); |
| 941 | |
| 942 | /* Unlink FILENAME on the target, in the filesystem as seen by |
| 943 | INF. If INF is NULL, use the filesystem seen by the debugger |
| 944 | (GDB or, for remote targets, the remote stub). Return 0, or |
| 945 | -1 if an error occurs (and set *TARGET_ERRNO). */ |
| 946 | virtual int fileio_unlink (struct inferior *inf, |
| 947 | const char *filename, |
| 948 | int *target_errno); |
| 949 | |
| 950 | /* Read value of symbolic link FILENAME on the target, in the |
| 951 | filesystem as seen by INF. If INF is NULL, use the filesystem |
| 952 | seen by the debugger (GDB or, for remote targets, the remote |
| 953 | stub). Return a string, or an empty optional if an error |
| 954 | occurs (and set *TARGET_ERRNO). */ |
| 955 | virtual gdb::optional<std::string> fileio_readlink (struct inferior *inf, |
| 956 | const char *filename, |
| 957 | int *target_errno); |
| 958 | |
| 959 | /* Implement the "info proc" command. Returns true if the target |
| 960 | actually implemented the command, false otherwise. */ |
| 961 | virtual bool info_proc (const char *, enum info_proc_what); |
| 962 | |
| 963 | /* Tracepoint-related operations. */ |
| 964 | |
| 965 | /* Prepare the target for a tracing run. */ |
| 966 | virtual void trace_init () |
| 967 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 968 | |
| 969 | /* Send full details of a tracepoint location to the target. */ |
| 970 | virtual void download_tracepoint (struct bp_location *location) |
| 971 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 972 | |
| 973 | /* Is the target able to download tracepoint locations in current |
| 974 | state? */ |
| 975 | virtual bool can_download_tracepoint () |
| 976 | TARGET_DEFAULT_RETURN (false); |
| 977 | |
| 978 | /* Send full details of a trace state variable to the target. */ |
| 979 | virtual void download_trace_state_variable (const trace_state_variable &tsv) |
| 980 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 981 | |
| 982 | /* Enable a tracepoint on the target. */ |
| 983 | virtual void enable_tracepoint (struct bp_location *location) |
| 984 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 985 | |
| 986 | /* Disable a tracepoint on the target. */ |
| 987 | virtual void disable_tracepoint (struct bp_location *location) |
| 988 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 989 | |
| 990 | /* Inform the target info of memory regions that are readonly |
| 991 | (such as text sections), and so it should return data from |
| 992 | those rather than look in the trace buffer. */ |
| 993 | virtual void trace_set_readonly_regions () |
| 994 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 995 | |
| 996 | /* Start a trace run. */ |
| 997 | virtual void trace_start () |
| 998 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 999 | |
| 1000 | /* Get the current status of a tracing run. */ |
| 1001 | virtual int get_trace_status (struct trace_status *ts) |
| 1002 | TARGET_DEFAULT_RETURN (-1); |
| 1003 | |
| 1004 | virtual void get_tracepoint_status (struct breakpoint *tp, |
| 1005 | struct uploaded_tp *utp) |
| 1006 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1007 | |
| 1008 | /* Stop a trace run. */ |
| 1009 | virtual void trace_stop () |
| 1010 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1011 | |
| 1012 | /* Ask the target to find a trace frame of the given type TYPE, |
| 1013 | using NUM, ADDR1, and ADDR2 as search parameters. Returns the |
| 1014 | number of the trace frame, and also the tracepoint number at |
| 1015 | TPP. If no trace frame matches, return -1. May throw if the |
| 1016 | operation fails. */ |
| 1017 | virtual int trace_find (enum trace_find_type type, int num, |
| 1018 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) |
| 1019 | TARGET_DEFAULT_RETURN (-1); |
| 1020 | |
| 1021 | /* Get the value of the trace state variable number TSV, returning |
| 1022 | 1 if the value is known and writing the value itself into the |
| 1023 | location pointed to by VAL, else returning 0. */ |
| 1024 | virtual bool get_trace_state_variable_value (int tsv, LONGEST *val) |
| 1025 | TARGET_DEFAULT_RETURN (false); |
| 1026 | |
| 1027 | virtual int save_trace_data (const char *filename) |
| 1028 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1029 | |
| 1030 | virtual int upload_tracepoints (struct uploaded_tp **utpp) |
| 1031 | TARGET_DEFAULT_RETURN (0); |
| 1032 | |
| 1033 | virtual int upload_trace_state_variables (struct uploaded_tsv **utsvp) |
| 1034 | TARGET_DEFAULT_RETURN (0); |
| 1035 | |
| 1036 | virtual LONGEST get_raw_trace_data (gdb_byte *buf, |
| 1037 | ULONGEST offset, LONGEST len) |
| 1038 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1039 | |
| 1040 | /* Get the minimum length of instruction on which a fast tracepoint |
| 1041 | may be set on the target. If this operation is unsupported, |
| 1042 | return -1. If for some reason the minimum length cannot be |
| 1043 | determined, return 0. */ |
| 1044 | virtual int get_min_fast_tracepoint_insn_len () |
| 1045 | TARGET_DEFAULT_RETURN (-1); |
| 1046 | |
| 1047 | /* Set the target's tracing behavior in response to unexpected |
| 1048 | disconnection - set VAL to 1 to keep tracing, 0 to stop. */ |
| 1049 | virtual void set_disconnected_tracing (int val) |
| 1050 | TARGET_DEFAULT_IGNORE (); |
| 1051 | virtual void set_circular_trace_buffer (int val) |
| 1052 | TARGET_DEFAULT_IGNORE (); |
| 1053 | /* Set the size of trace buffer in the target. */ |
| 1054 | virtual void set_trace_buffer_size (LONGEST val) |
| 1055 | TARGET_DEFAULT_IGNORE (); |
| 1056 | |
| 1057 | /* Add/change textual notes about the trace run, returning 1 if |
| 1058 | successful, 0 otherwise. */ |
| 1059 | virtual bool set_trace_notes (const char *user, const char *notes, |
| 1060 | const char *stopnotes) |
| 1061 | TARGET_DEFAULT_RETURN (false); |
| 1062 | |
| 1063 | /* Return the processor core that thread PTID was last seen on. |
| 1064 | This information is updated only when: |
| 1065 | - update_thread_list is called |
| 1066 | - thread stops |
| 1067 | If the core cannot be determined -- either for the specified |
| 1068 | thread, or right now, or in this debug session, or for this |
| 1069 | target -- return -1. */ |
| 1070 | virtual int core_of_thread (ptid_t ptid) |
| 1071 | TARGET_DEFAULT_RETURN (-1); |
| 1072 | |
| 1073 | /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range |
| 1074 | matches the contents of [DATA,DATA+SIZE). Returns 1 if there's |
| 1075 | a match, 0 if there's a mismatch, and -1 if an error is |
| 1076 | encountered while reading memory. */ |
| 1077 | virtual int verify_memory (const gdb_byte *data, |
| 1078 | CORE_ADDR memaddr, ULONGEST size) |
| 1079 | TARGET_DEFAULT_FUNC (default_verify_memory); |
| 1080 | |
| 1081 | /* Return the address of the start of the Thread Information Block |
| 1082 | a Windows OS specific feature. */ |
| 1083 | virtual bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
| 1084 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1085 | |
| 1086 | /* Send the new settings of write permission variables. */ |
| 1087 | virtual void set_permissions () |
| 1088 | TARGET_DEFAULT_IGNORE (); |
| 1089 | |
| 1090 | /* Look for a static tracepoint marker at ADDR, and fill in MARKER |
| 1091 | with its details. Return true on success, false on failure. */ |
| 1092 | virtual bool static_tracepoint_marker_at (CORE_ADDR, |
| 1093 | static_tracepoint_marker *marker) |
| 1094 | TARGET_DEFAULT_RETURN (false); |
| 1095 | |
| 1096 | /* Return a vector of all tracepoints markers string id ID, or all |
| 1097 | markers if ID is NULL. */ |
| 1098 | virtual std::vector<static_tracepoint_marker> |
| 1099 | static_tracepoint_markers_by_strid (const char *id) |
| 1100 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1101 | |
| 1102 | /* Return a traceframe info object describing the current |
| 1103 | traceframe's contents. This method should not cache data; |
| 1104 | higher layers take care of caching, invalidating, and |
| 1105 | re-fetching when necessary. */ |
| 1106 | virtual traceframe_info_up traceframe_info () |
| 1107 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1108 | |
| 1109 | /* Ask the target to use or not to use agent according to USE. |
| 1110 | Return true if successful, false otherwise. */ |
| 1111 | virtual bool use_agent (bool use) |
| 1112 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1113 | |
| 1114 | /* Is the target able to use agent in current state? */ |
| 1115 | virtual bool can_use_agent () |
| 1116 | TARGET_DEFAULT_RETURN (false); |
| 1117 | |
| 1118 | /* Enable branch tracing for PTID using CONF configuration. |
| 1119 | Return a branch trace target information struct for reading and for |
| 1120 | disabling branch trace. */ |
| 1121 | virtual struct btrace_target_info *enable_btrace (ptid_t ptid, |
| 1122 | const struct btrace_config *conf) |
| 1123 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1124 | |
| 1125 | /* Disable branch tracing and deallocate TINFO. */ |
| 1126 | virtual void disable_btrace (struct btrace_target_info *tinfo) |
| 1127 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1128 | |
| 1129 | /* Disable branch tracing and deallocate TINFO. This function is similar |
| 1130 | to to_disable_btrace, except that it is called during teardown and is |
| 1131 | only allowed to perform actions that are safe. A counter-example would |
| 1132 | be attempting to talk to a remote target. */ |
| 1133 | virtual void teardown_btrace (struct btrace_target_info *tinfo) |
| 1134 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1135 | |
| 1136 | /* Read branch trace data for the thread indicated by BTINFO into DATA. |
| 1137 | DATA is cleared before new trace is added. */ |
| 1138 | virtual enum btrace_error read_btrace (struct btrace_data *data, |
| 1139 | struct btrace_target_info *btinfo, |
| 1140 | enum btrace_read_type type) |
| 1141 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1142 | |
| 1143 | /* Get the branch trace configuration. */ |
| 1144 | virtual const struct btrace_config *btrace_conf (const struct btrace_target_info *) |
| 1145 | TARGET_DEFAULT_RETURN (NULL); |
| 1146 | |
| 1147 | /* Current recording method. */ |
| 1148 | virtual enum record_method record_method (ptid_t ptid) |
| 1149 | TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE); |
| 1150 | |
| 1151 | /* Stop trace recording. */ |
| 1152 | virtual void stop_recording () |
| 1153 | TARGET_DEFAULT_IGNORE (); |
| 1154 | |
| 1155 | /* Print information about the recording. */ |
| 1156 | virtual void info_record () |
| 1157 | TARGET_DEFAULT_IGNORE (); |
| 1158 | |
| 1159 | /* Save the recorded execution trace into a file. */ |
| 1160 | virtual void save_record (const char *filename) |
| 1161 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1162 | |
| 1163 | /* Delete the recorded execution trace from the current position |
| 1164 | onwards. */ |
| 1165 | virtual bool supports_delete_record () |
| 1166 | TARGET_DEFAULT_RETURN (false); |
| 1167 | virtual void delete_record () |
| 1168 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1169 | |
| 1170 | /* Query if the record target is currently replaying PTID. */ |
| 1171 | virtual bool record_is_replaying (ptid_t ptid) |
| 1172 | TARGET_DEFAULT_RETURN (false); |
| 1173 | |
| 1174 | /* Query if the record target will replay PTID if it were resumed in |
| 1175 | execution direction DIR. */ |
| 1176 | virtual bool record_will_replay (ptid_t ptid, int dir) |
| 1177 | TARGET_DEFAULT_RETURN (false); |
| 1178 | |
| 1179 | /* Stop replaying. */ |
| 1180 | virtual void record_stop_replaying () |
| 1181 | TARGET_DEFAULT_IGNORE (); |
| 1182 | |
| 1183 | /* Go to the begin of the execution trace. */ |
| 1184 | virtual void goto_record_begin () |
| 1185 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1186 | |
| 1187 | /* Go to the end of the execution trace. */ |
| 1188 | virtual void goto_record_end () |
| 1189 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1190 | |
| 1191 | /* Go to a specific location in the recorded execution trace. */ |
| 1192 | virtual void goto_record (ULONGEST insn) |
| 1193 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1194 | |
| 1195 | /* Disassemble SIZE instructions in the recorded execution trace from |
| 1196 | the current position. |
| 1197 | If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise, |
| 1198 | disassemble SIZE succeeding instructions. */ |
| 1199 | virtual void insn_history (int size, gdb_disassembly_flags flags) |
| 1200 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1201 | |
| 1202 | /* Disassemble SIZE instructions in the recorded execution trace around |
| 1203 | FROM. |
| 1204 | If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise, |
| 1205 | disassemble SIZE instructions after FROM. */ |
| 1206 | virtual void insn_history_from (ULONGEST from, int size, |
| 1207 | gdb_disassembly_flags flags) |
| 1208 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1209 | |
| 1210 | /* Disassemble a section of the recorded execution trace from instruction |
| 1211 | BEGIN (inclusive) to instruction END (inclusive). */ |
| 1212 | virtual void insn_history_range (ULONGEST begin, ULONGEST end, |
| 1213 | gdb_disassembly_flags flags) |
| 1214 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1215 | |
| 1216 | /* Print a function trace of the recorded execution trace. |
| 1217 | If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE |
| 1218 | succeeding functions. */ |
| 1219 | virtual void call_history (int size, record_print_flags flags) |
| 1220 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1221 | |
| 1222 | /* Print a function trace of the recorded execution trace starting |
| 1223 | at function FROM. |
| 1224 | If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print |
| 1225 | SIZE functions after FROM. */ |
| 1226 | virtual void call_history_from (ULONGEST begin, int size, record_print_flags flags) |
| 1227 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1228 | |
| 1229 | /* Print a function trace of an execution trace section from function BEGIN |
| 1230 | (inclusive) to function END (inclusive). */ |
| 1231 | virtual void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
| 1232 | TARGET_DEFAULT_NORETURN (tcomplain ()); |
| 1233 | |
| 1234 | /* True if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a |
| 1235 | non-empty annex. */ |
| 1236 | virtual bool augmented_libraries_svr4_read () |
| 1237 | TARGET_DEFAULT_RETURN (false); |
| 1238 | |
| 1239 | /* Those unwinders are tried before any other arch unwinders. If |
| 1240 | SELF doesn't have unwinders, it should delegate to the |
| 1241 | "beneath" target. */ |
| 1242 | virtual const struct frame_unwind *get_unwinder () |
| 1243 | TARGET_DEFAULT_RETURN (NULL); |
| 1244 | |
| 1245 | virtual const struct frame_unwind *get_tailcall_unwinder () |
| 1246 | TARGET_DEFAULT_RETURN (NULL); |
| 1247 | |
| 1248 | /* Prepare to generate a core file. */ |
| 1249 | virtual void prepare_to_generate_core () |
| 1250 | TARGET_DEFAULT_IGNORE (); |
| 1251 | |
| 1252 | /* Cleanup after generating a core file. */ |
| 1253 | virtual void done_generating_core () |
| 1254 | TARGET_DEFAULT_IGNORE (); |
| 1255 | }; |
| 1256 | |
| 1257 | /* Deleter for std::unique_ptr. See comments in |
| 1258 | target_ops::~target_ops and target_ops::close about heap-allocated |
| 1259 | targets. */ |
| 1260 | struct target_ops_deleter |
| 1261 | { |
| 1262 | void operator() (target_ops *target) |
| 1263 | { |
| 1264 | target->close (); |
| 1265 | } |
| 1266 | }; |
| 1267 | |
| 1268 | /* A unique pointer for target_ops. */ |
| 1269 | typedef std::unique_ptr<target_ops, target_ops_deleter> target_ops_up; |
| 1270 | |
| 1271 | /* Decref a target and close if, if there are no references left. */ |
| 1272 | extern void decref_target (target_ops *t); |
| 1273 | |
| 1274 | /* A policy class to interface gdb::ref_ptr with target_ops. */ |
| 1275 | |
| 1276 | struct target_ops_ref_policy |
| 1277 | { |
| 1278 | static void incref (target_ops *t) |
| 1279 | { |
| 1280 | t->incref (); |
| 1281 | } |
| 1282 | |
| 1283 | static void decref (target_ops *t) |
| 1284 | { |
| 1285 | decref_target (t); |
| 1286 | } |
| 1287 | }; |
| 1288 | |
| 1289 | /* A gdb::ref_ptr pointer to a target_ops. */ |
| 1290 | typedef gdb::ref_ptr<target_ops, target_ops_ref_policy> target_ops_ref; |
| 1291 | |
| 1292 | /* Native target backends call this once at initialization time to |
| 1293 | inform the core about which is the target that can respond to "run" |
| 1294 | or "attach". Note: native targets are always singletons. */ |
| 1295 | extern void set_native_target (target_ops *target); |
| 1296 | |
| 1297 | /* Get the registered native target, if there's one. Otherwise return |
| 1298 | NULL. */ |
| 1299 | extern target_ops *get_native_target (); |
| 1300 | |
| 1301 | /* Type that manages a target stack. See description of target stacks |
| 1302 | and strata at the top of the file. */ |
| 1303 | |
| 1304 | class target_stack |
| 1305 | { |
| 1306 | public: |
| 1307 | target_stack () = default; |
| 1308 | DISABLE_COPY_AND_ASSIGN (target_stack); |
| 1309 | |
| 1310 | /* Push a new target into the stack of the existing target |
| 1311 | accessors, possibly superseding some existing accessor. */ |
| 1312 | void push (target_ops *t); |
| 1313 | |
| 1314 | /* Remove a target from the stack, wherever it may be. Return true |
| 1315 | if it was removed, false otherwise. */ |
| 1316 | bool unpush (target_ops *t); |
| 1317 | |
| 1318 | /* Returns true if T is pushed on the target stack. */ |
| 1319 | bool is_pushed (target_ops *t) const |
| 1320 | { return at (t->stratum ()) == t; } |
| 1321 | |
| 1322 | /* Return the target at STRATUM. */ |
| 1323 | target_ops *at (strata stratum) const { return m_stack[stratum]; } |
| 1324 | |
| 1325 | /* Return the target at the top of the stack. */ |
| 1326 | target_ops *top () const { return at (m_top); } |
| 1327 | |
| 1328 | /* Find the next target down the stack from the specified target. */ |
| 1329 | target_ops *find_beneath (const target_ops *t) const; |
| 1330 | |
| 1331 | private: |
| 1332 | /* The stratum of the top target. */ |
| 1333 | enum strata m_top {}; |
| 1334 | |
| 1335 | /* The stack, represented as an array, with one slot per stratum. |
| 1336 | If no target is pushed at some stratum, the corresponding slot is |
| 1337 | null. */ |
| 1338 | target_ops *m_stack[(int) debug_stratum + 1] {}; |
| 1339 | }; |
| 1340 | |
| 1341 | /* The ops structure for our "current" target process. This should |
| 1342 | never be NULL. If there is no target, it points to the dummy_target. */ |
| 1343 | |
| 1344 | extern target_ops *current_top_target (); |
| 1345 | |
| 1346 | /* Return the dummy target. */ |
| 1347 | extern target_ops *get_dummy_target (); |
| 1348 | |
| 1349 | /* Define easy words for doing these operations on our current target. */ |
| 1350 | |
| 1351 | #define target_shortname (current_top_target ()->shortname ()) |
| 1352 | #define target_longname (current_top_target ()->longname ()) |
| 1353 | |
| 1354 | /* Does whatever cleanup is required for a target that we are no |
| 1355 | longer going to be calling. This routine is automatically always |
| 1356 | called after popping the target off the target stack - the target's |
| 1357 | own methods are no longer available through the target vector. |
| 1358 | Closing file descriptors and freeing all memory allocated memory are |
| 1359 | typical things it should do. */ |
| 1360 | |
| 1361 | void target_close (struct target_ops *targ); |
| 1362 | |
| 1363 | /* Find the correct target to use for "attach". If a target on the |
| 1364 | current stack supports attaching, then it is returned. Otherwise, |
| 1365 | the default run target is returned. */ |
| 1366 | |
| 1367 | extern struct target_ops *find_attach_target (void); |
| 1368 | |
| 1369 | /* Find the correct target to use for "run". If a target on the |
| 1370 | current stack supports creating a new inferior, then it is |
| 1371 | returned. Otherwise, the default run target is returned. */ |
| 1372 | |
| 1373 | extern struct target_ops *find_run_target (void); |
| 1374 | |
| 1375 | /* Some targets don't generate traps when attaching to the inferior, |
| 1376 | or their target_attach implementation takes care of the waiting. |
| 1377 | These targets must set to_attach_no_wait. */ |
| 1378 | |
| 1379 | #define target_attach_no_wait() \ |
| 1380 | (current_top_target ()->attach_no_wait ()) |
| 1381 | |
| 1382 | /* The target_attach operation places a process under debugger control, |
| 1383 | and stops the process. |
| 1384 | |
| 1385 | This operation provides a target-specific hook that allows the |
| 1386 | necessary bookkeeping to be performed after an attach completes. */ |
| 1387 | #define target_post_attach(pid) \ |
| 1388 | (current_top_target ()->post_attach) (pid) |
| 1389 | |
| 1390 | /* Display a message indicating we're about to detach from the current |
| 1391 | inferior process. */ |
| 1392 | |
| 1393 | extern void target_announce_detach (int from_tty); |
| 1394 | |
| 1395 | /* Takes a program previously attached to and detaches it. |
| 1396 | The program may resume execution (some targets do, some don't) and will |
| 1397 | no longer stop on signals, etc. We better not have left any breakpoints |
| 1398 | in the program or it'll die when it hits one. FROM_TTY says whether to be |
| 1399 | verbose or not. */ |
| 1400 | |
| 1401 | extern void target_detach (inferior *inf, int from_tty); |
| 1402 | |
| 1403 | /* Disconnect from the current target without resuming it (leaving it |
| 1404 | waiting for a debugger). */ |
| 1405 | |
| 1406 | extern void target_disconnect (const char *, int); |
| 1407 | |
| 1408 | /* Resume execution (or prepare for execution) of a target thread, |
| 1409 | process or all processes. STEP says whether to hardware |
| 1410 | single-step or to run free; SIGGNAL is the signal to be given to |
| 1411 | the target, or GDB_SIGNAL_0 for no signal. The caller may not pass |
| 1412 | GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this |
| 1413 | process id'. A wildcard PTID (all threads, or all threads of |
| 1414 | process) means `step/resume INFERIOR_PTID, and let other threads |
| 1415 | (for which the wildcard PTID matches) resume with their |
| 1416 | 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it |
| 1417 | is in "pass" state, or with no signal if in "no pass" state. |
| 1418 | |
| 1419 | In order to efficiently handle batches of resumption requests, |
| 1420 | targets may implement this method such that it records the |
| 1421 | resumption request, but defers the actual resumption to the |
| 1422 | target_commit_resume method implementation. See |
| 1423 | target_commit_resume below. */ |
| 1424 | extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal); |
| 1425 | |
| 1426 | /* Commit a series of resumption requests previously prepared with |
| 1427 | target_resume calls. |
| 1428 | |
| 1429 | GDB always calls target_commit_resume after calling target_resume |
| 1430 | one or more times. A target may thus use this method in |
| 1431 | coordination with the target_resume method to batch target-side |
| 1432 | resumption requests. In that case, the target doesn't actually |
| 1433 | resume in its target_resume implementation. Instead, it prepares |
| 1434 | the resumption in target_resume, and defers the actual resumption |
| 1435 | to target_commit_resume. E.g., the remote target uses this to |
| 1436 | coalesce multiple resumption requests in a single vCont packet. */ |
| 1437 | extern void target_commit_resume (); |
| 1438 | |
| 1439 | /* Setup to defer target_commit_resume calls, and reactivate |
| 1440 | target_commit_resume on destruction, if it was previously |
| 1441 | active. */ |
| 1442 | extern scoped_restore_tmpl<int> make_scoped_defer_target_commit_resume (); |
| 1443 | |
| 1444 | /* For target_read_memory see target/target.h. */ |
| 1445 | |
| 1446 | /* The default target_ops::to_wait implementation. */ |
| 1447 | |
| 1448 | extern ptid_t default_target_wait (struct target_ops *ops, |
| 1449 | ptid_t ptid, |
| 1450 | struct target_waitstatus *status, |
| 1451 | int options); |
| 1452 | |
| 1453 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
| 1454 | |
| 1455 | extern void target_fetch_registers (struct regcache *regcache, int regno); |
| 1456 | |
| 1457 | /* Store at least register REGNO, or all regs if REGNO == -1. |
| 1458 | It can store as many registers as it wants to, so target_prepare_to_store |
| 1459 | must have been previously called. Calls error() if there are problems. */ |
| 1460 | |
| 1461 | extern void target_store_registers (struct regcache *regcache, int regs); |
| 1462 | |
| 1463 | /* Get ready to modify the registers array. On machines which store |
| 1464 | individual registers, this doesn't need to do anything. On machines |
| 1465 | which store all the registers in one fell swoop, this makes sure |
| 1466 | that REGISTERS contains all the registers from the program being |
| 1467 | debugged. */ |
| 1468 | |
| 1469 | #define target_prepare_to_store(regcache) \ |
| 1470 | (current_top_target ()->prepare_to_store) (regcache) |
| 1471 | |
| 1472 | /* Determine current address space of thread PTID. */ |
| 1473 | |
| 1474 | struct address_space *target_thread_address_space (ptid_t); |
| 1475 | |
| 1476 | /* Implement the "info proc" command. This returns one if the request |
| 1477 | was handled, and zero otherwise. It can also throw an exception if |
| 1478 | an error was encountered while attempting to handle the |
| 1479 | request. */ |
| 1480 | |
| 1481 | int target_info_proc (const char *, enum info_proc_what); |
| 1482 | |
| 1483 | /* Returns true if this target can disable address space randomization. */ |
| 1484 | |
| 1485 | int target_supports_disable_randomization (void); |
| 1486 | |
| 1487 | /* Returns true if this target can enable and disable tracepoints |
| 1488 | while a trace experiment is running. */ |
| 1489 | |
| 1490 | #define target_supports_enable_disable_tracepoint() \ |
| 1491 | (current_top_target ()->supports_enable_disable_tracepoint) () |
| 1492 | |
| 1493 | #define target_supports_string_tracing() \ |
| 1494 | (current_top_target ()->supports_string_tracing) () |
| 1495 | |
| 1496 | /* Returns true if this target can handle breakpoint conditions |
| 1497 | on its end. */ |
| 1498 | |
| 1499 | #define target_supports_evaluation_of_breakpoint_conditions() \ |
| 1500 | (current_top_target ()->supports_evaluation_of_breakpoint_conditions) () |
| 1501 | |
| 1502 | /* Returns true if this target can handle breakpoint commands |
| 1503 | on its end. */ |
| 1504 | |
| 1505 | #define target_can_run_breakpoint_commands() \ |
| 1506 | (current_top_target ()->can_run_breakpoint_commands) () |
| 1507 | |
| 1508 | extern int target_read_string (CORE_ADDR, gdb::unique_xmalloc_ptr<char> *, |
| 1509 | int, int *); |
| 1510 | |
| 1511 | /* For target_read_memory see target/target.h. */ |
| 1512 | |
| 1513 | extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, |
| 1514 | ssize_t len); |
| 1515 | |
| 1516 | extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); |
| 1517 | |
| 1518 | extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); |
| 1519 | |
| 1520 | /* For target_write_memory see target/target.h. */ |
| 1521 | |
| 1522 | extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, |
| 1523 | ssize_t len); |
| 1524 | |
| 1525 | /* Fetches the target's memory map. If one is found it is sorted |
| 1526 | and returned, after some consistency checking. Otherwise, NULL |
| 1527 | is returned. */ |
| 1528 | std::vector<mem_region> target_memory_map (void); |
| 1529 | |
| 1530 | /* Erases all flash memory regions on the target. */ |
| 1531 | void flash_erase_command (const char *cmd, int from_tty); |
| 1532 | |
| 1533 | /* Erase the specified flash region. */ |
| 1534 | void target_flash_erase (ULONGEST address, LONGEST length); |
| 1535 | |
| 1536 | /* Finish a sequence of flash operations. */ |
| 1537 | void target_flash_done (void); |
| 1538 | |
| 1539 | /* Describes a request for a memory write operation. */ |
| 1540 | struct memory_write_request |
| 1541 | { |
| 1542 | memory_write_request (ULONGEST begin_, ULONGEST end_, |
| 1543 | gdb_byte *data_ = nullptr, void *baton_ = nullptr) |
| 1544 | : begin (begin_), end (end_), data (data_), baton (baton_) |
| 1545 | {} |
| 1546 | |
| 1547 | /* Begining address that must be written. */ |
| 1548 | ULONGEST begin; |
| 1549 | /* Past-the-end address. */ |
| 1550 | ULONGEST end; |
| 1551 | /* The data to write. */ |
| 1552 | gdb_byte *data; |
| 1553 | /* A callback baton for progress reporting for this request. */ |
| 1554 | void *baton; |
| 1555 | }; |
| 1556 | |
| 1557 | /* Enumeration specifying different flash preservation behaviour. */ |
| 1558 | enum flash_preserve_mode |
| 1559 | { |
| 1560 | flash_preserve, |
| 1561 | flash_discard |
| 1562 | }; |
| 1563 | |
| 1564 | /* Write several memory blocks at once. This version can be more |
| 1565 | efficient than making several calls to target_write_memory, in |
| 1566 | particular because it can optimize accesses to flash memory. |
| 1567 | |
| 1568 | Moreover, this is currently the only memory access function in gdb |
| 1569 | that supports writing to flash memory, and it should be used for |
| 1570 | all cases where access to flash memory is desirable. |
| 1571 | |
| 1572 | REQUESTS is the vector of memory_write_request. |
| 1573 | PRESERVE_FLASH_P indicates what to do with blocks which must be |
| 1574 | erased, but not completely rewritten. |
| 1575 | PROGRESS_CB is a function that will be periodically called to provide |
| 1576 | feedback to user. It will be called with the baton corresponding |
| 1577 | to the request currently being written. It may also be called |
| 1578 | with a NULL baton, when preserved flash sectors are being rewritten. |
| 1579 | |
| 1580 | The function returns 0 on success, and error otherwise. */ |
| 1581 | int target_write_memory_blocks |
| 1582 | (const std::vector<memory_write_request> &requests, |
| 1583 | enum flash_preserve_mode preserve_flash_p, |
| 1584 | void (*progress_cb) (ULONGEST, void *)); |
| 1585 | |
| 1586 | /* Print a line about the current target. */ |
| 1587 | |
| 1588 | #define target_files_info() \ |
| 1589 | (current_top_target ()->files_info) () |
| 1590 | |
| 1591 | /* Insert a breakpoint at address BP_TGT->placed_address in |
| 1592 | the target machine. Returns 0 for success, and returns non-zero or |
| 1593 | throws an error (with a detailed failure reason error code and |
| 1594 | message) otherwise. */ |
| 1595 | |
| 1596 | extern int target_insert_breakpoint (struct gdbarch *gdbarch, |
| 1597 | struct bp_target_info *bp_tgt); |
| 1598 | |
| 1599 | /* Remove a breakpoint at address BP_TGT->placed_address in the target |
| 1600 | machine. Result is 0 for success, non-zero for error. */ |
| 1601 | |
| 1602 | extern int target_remove_breakpoint (struct gdbarch *gdbarch, |
| 1603 | struct bp_target_info *bp_tgt, |
| 1604 | enum remove_bp_reason reason); |
| 1605 | |
| 1606 | /* Return true if the target stack has a non-default |
| 1607 | "terminal_ours" method. */ |
| 1608 | |
| 1609 | extern bool target_supports_terminal_ours (void); |
| 1610 | |
| 1611 | /* Kill the inferior process. Make it go away. */ |
| 1612 | |
| 1613 | extern void target_kill (void); |
| 1614 | |
| 1615 | /* Load an executable file into the target process. This is expected |
| 1616 | to not only bring new code into the target process, but also to |
| 1617 | update GDB's symbol tables to match. |
| 1618 | |
| 1619 | ARG contains command-line arguments, to be broken down with |
| 1620 | buildargv (). The first non-switch argument is the filename to |
| 1621 | load, FILE; the second is a number (as parsed by strtoul (..., ..., |
| 1622 | 0)), which is an offset to apply to the load addresses of FILE's |
| 1623 | sections. The target may define switches, or other non-switch |
| 1624 | arguments, as it pleases. */ |
| 1625 | |
| 1626 | extern void target_load (const char *arg, int from_tty); |
| 1627 | |
| 1628 | /* Some targets (such as ttrace-based HPUX) don't allow us to request |
| 1629 | notification of inferior events such as fork and vork immediately |
| 1630 | after the inferior is created. (This because of how gdb gets an |
| 1631 | inferior created via invoking a shell to do it. In such a scenario, |
| 1632 | if the shell init file has commands in it, the shell will fork and |
| 1633 | exec for each of those commands, and we will see each such fork |
| 1634 | event. Very bad.) |
| 1635 | |
| 1636 | Such targets will supply an appropriate definition for this function. */ |
| 1637 | |
| 1638 | #define target_post_startup_inferior(ptid) \ |
| 1639 | (current_top_target ()->post_startup_inferior) (ptid) |
| 1640 | |
| 1641 | /* On some targets, we can catch an inferior fork or vfork event when |
| 1642 | it occurs. These functions insert/remove an already-created |
| 1643 | catchpoint for such events. They return 0 for success, 1 if the |
| 1644 | catchpoint type is not supported and -1 for failure. */ |
| 1645 | |
| 1646 | #define target_insert_fork_catchpoint(pid) \ |
| 1647 | (current_top_target ()->insert_fork_catchpoint) (pid) |
| 1648 | |
| 1649 | #define target_remove_fork_catchpoint(pid) \ |
| 1650 | (current_top_target ()->remove_fork_catchpoint) (pid) |
| 1651 | |
| 1652 | #define target_insert_vfork_catchpoint(pid) \ |
| 1653 | (current_top_target ()->insert_vfork_catchpoint) (pid) |
| 1654 | |
| 1655 | #define target_remove_vfork_catchpoint(pid) \ |
| 1656 | (current_top_target ()->remove_vfork_catchpoint) (pid) |
| 1657 | |
| 1658 | /* If the inferior forks or vforks, this function will be called at |
| 1659 | the next resume in order to perform any bookkeeping and fiddling |
| 1660 | necessary to continue debugging either the parent or child, as |
| 1661 | requested, and releasing the other. Information about the fork |
| 1662 | or vfork event is available via get_last_target_status (). |
| 1663 | This function returns true if the inferior should not be resumed |
| 1664 | (i.e. there is another event pending). */ |
| 1665 | |
| 1666 | bool target_follow_fork (bool follow_child, bool detach_fork); |
| 1667 | |
| 1668 | /* Handle the target-specific bookkeeping required when the inferior |
| 1669 | makes an exec call. INF is the exec'd inferior. */ |
| 1670 | |
| 1671 | void target_follow_exec (struct inferior *inf, const char *execd_pathname); |
| 1672 | |
| 1673 | /* On some targets, we can catch an inferior exec event when it |
| 1674 | occurs. These functions insert/remove an already-created |
| 1675 | catchpoint for such events. They return 0 for success, 1 if the |
| 1676 | catchpoint type is not supported and -1 for failure. */ |
| 1677 | |
| 1678 | #define target_insert_exec_catchpoint(pid) \ |
| 1679 | (current_top_target ()->insert_exec_catchpoint) (pid) |
| 1680 | |
| 1681 | #define target_remove_exec_catchpoint(pid) \ |
| 1682 | (current_top_target ()->remove_exec_catchpoint) (pid) |
| 1683 | |
| 1684 | /* Syscall catch. |
| 1685 | |
| 1686 | NEEDED is true if any syscall catch (of any kind) is requested. |
| 1687 | If NEEDED is false, it means the target can disable the mechanism to |
| 1688 | catch system calls because there are no more catchpoints of this type. |
| 1689 | |
| 1690 | ANY_COUNT is nonzero if a generic (filter-less) syscall catch is |
| 1691 | being requested. In this case, SYSCALL_COUNTS should be ignored. |
| 1692 | |
| 1693 | SYSCALL_COUNTS is an array of ints, indexed by syscall number. An |
| 1694 | element in this array is nonzero if that syscall should be caught. |
| 1695 | This argument only matters if ANY_COUNT is zero. |
| 1696 | |
| 1697 | Return 0 for success, 1 if syscall catchpoints are not supported or -1 |
| 1698 | for failure. */ |
| 1699 | |
| 1700 | #define target_set_syscall_catchpoint(pid, needed, any_count, syscall_counts) \ |
| 1701 | (current_top_target ()->set_syscall_catchpoint) (pid, needed, any_count, \ |
| 1702 | syscall_counts) |
| 1703 | |
| 1704 | /* The debugger has completed a blocking wait() call. There is now |
| 1705 | some process event that must be processed. This function should |
| 1706 | be defined by those targets that require the debugger to perform |
| 1707 | cleanup or internal state changes in response to the process event. */ |
| 1708 | |
| 1709 | /* For target_mourn_inferior see target/target.h. */ |
| 1710 | |
| 1711 | /* Does target have enough data to do a run or attach command? */ |
| 1712 | |
| 1713 | extern int target_can_run (); |
| 1714 | |
| 1715 | /* Set list of signals to be handled in the target. |
| 1716 | |
| 1717 | PASS_SIGNALS is an array indexed by target signal number |
| 1718 | (enum gdb_signal). For every signal whose entry in this array is |
| 1719 | non-zero, the target is allowed -but not required- to skip reporting |
| 1720 | arrival of the signal to the GDB core by returning from target_wait, |
| 1721 | and to pass the signal directly to the inferior instead. |
| 1722 | |
| 1723 | However, if the target is hardware single-stepping a thread that is |
| 1724 | about to receive a signal, it needs to be reported in any case, even |
| 1725 | if mentioned in a previous target_pass_signals call. */ |
| 1726 | |
| 1727 | extern void target_pass_signals |
| 1728 | (gdb::array_view<const unsigned char> pass_signals); |
| 1729 | |
| 1730 | /* Set list of signals the target may pass to the inferior. This |
| 1731 | directly maps to the "handle SIGNAL pass/nopass" setting. |
| 1732 | |
| 1733 | PROGRAM_SIGNALS is an array indexed by target signal |
| 1734 | number (enum gdb_signal). For every signal whose entry in this |
| 1735 | array is non-zero, the target is allowed to pass the signal to the |
| 1736 | inferior. Signals not present in the array shall be silently |
| 1737 | discarded. This does not influence whether to pass signals to the |
| 1738 | inferior as a result of a target_resume call. This is useful in |
| 1739 | scenarios where the target needs to decide whether to pass or not a |
| 1740 | signal to the inferior without GDB core involvement, such as for |
| 1741 | example, when detaching (as threads may have been suspended with |
| 1742 | pending signals not reported to GDB). */ |
| 1743 | |
| 1744 | extern void target_program_signals |
| 1745 | (gdb::array_view<const unsigned char> program_signals); |
| 1746 | |
| 1747 | /* Check to see if a thread is still alive. */ |
| 1748 | |
| 1749 | extern int target_thread_alive (ptid_t ptid); |
| 1750 | |
| 1751 | /* Sync the target's threads with GDB's thread list. */ |
| 1752 | |
| 1753 | extern void target_update_thread_list (void); |
| 1754 | |
| 1755 | /* Make target stop in a continuable fashion. (For instance, under |
| 1756 | Unix, this should act like SIGSTOP). Note that this function is |
| 1757 | asynchronous: it does not wait for the target to become stopped |
| 1758 | before returning. If this is the behavior you want please use |
| 1759 | target_stop_and_wait. */ |
| 1760 | |
| 1761 | extern void target_stop (ptid_t ptid); |
| 1762 | |
| 1763 | /* Interrupt the target. Unlike target_stop, this does not specify |
| 1764 | which thread/process reports the stop. For most target this acts |
| 1765 | like raising a SIGINT, though that's not absolutely required. This |
| 1766 | function is asynchronous. */ |
| 1767 | |
| 1768 | extern void target_interrupt (); |
| 1769 | |
| 1770 | /* Pass a ^C, as determined to have been pressed by checking the quit |
| 1771 | flag, to the target, as if the user had typed the ^C on the |
| 1772 | inferior's controlling terminal while the inferior was in the |
| 1773 | foreground. Remote targets may take the opportunity to detect the |
| 1774 | remote side is not responding and offer to disconnect. */ |
| 1775 | |
| 1776 | extern void target_pass_ctrlc (void); |
| 1777 | |
| 1778 | /* The default target_ops::to_pass_ctrlc implementation. Simply calls |
| 1779 | target_interrupt. */ |
| 1780 | extern void default_target_pass_ctrlc (struct target_ops *ops); |
| 1781 | |
| 1782 | /* Send the specified COMMAND to the target's monitor |
| 1783 | (shell,interpreter) for execution. The result of the query is |
| 1784 | placed in OUTBUF. */ |
| 1785 | |
| 1786 | #define target_rcmd(command, outbuf) \ |
| 1787 | (current_top_target ()->rcmd) (command, outbuf) |
| 1788 | |
| 1789 | |
| 1790 | /* Does the target include all of memory, or only part of it? This |
| 1791 | determines whether we look up the target chain for other parts of |
| 1792 | memory if this target can't satisfy a request. */ |
| 1793 | |
| 1794 | extern int target_has_all_memory_1 (void); |
| 1795 | #define target_has_all_memory target_has_all_memory_1 () |
| 1796 | |
| 1797 | /* Does the target include memory? (Dummy targets don't.) */ |
| 1798 | |
| 1799 | extern int target_has_memory_1 (void); |
| 1800 | #define target_has_memory target_has_memory_1 () |
| 1801 | |
| 1802 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until |
| 1803 | we start a process.) */ |
| 1804 | |
| 1805 | extern int target_has_stack_1 (void); |
| 1806 | #define target_has_stack target_has_stack_1 () |
| 1807 | |
| 1808 | /* Does the target have registers? (Exec files don't.) */ |
| 1809 | |
| 1810 | extern int target_has_registers_1 (void); |
| 1811 | #define target_has_registers target_has_registers_1 () |
| 1812 | |
| 1813 | /* Does the target have execution? Can we make it jump (through |
| 1814 | hoops), or pop its stack a few times? This means that the current |
| 1815 | target is currently executing; for some targets, that's the same as |
| 1816 | whether or not the target is capable of execution, but there are |
| 1817 | also targets which can be current while not executing. In that |
| 1818 | case this will become true after to_create_inferior or |
| 1819 | to_attach. */ |
| 1820 | |
| 1821 | extern bool target_has_execution_1 (inferior *inf); |
| 1822 | |
| 1823 | /* Like target_has_execution_1, but always passes |
| 1824 | current_inferior(). */ |
| 1825 | |
| 1826 | extern int target_has_execution_current (void); |
| 1827 | |
| 1828 | #define target_has_execution target_has_execution_current () |
| 1829 | |
| 1830 | /* Can the target support the debugger control of thread execution? |
| 1831 | Can it lock the thread scheduler? */ |
| 1832 | |
| 1833 | #define target_can_lock_scheduler \ |
| 1834 | (current_top_target ()->get_thread_control_capabilities () & tc_schedlock) |
| 1835 | |
| 1836 | /* Controls whether async mode is permitted. */ |
| 1837 | extern bool target_async_permitted; |
| 1838 | |
| 1839 | /* Can the target support asynchronous execution? */ |
| 1840 | #define target_can_async_p() (current_top_target ()->can_async_p ()) |
| 1841 | |
| 1842 | /* Is the target in asynchronous execution mode? */ |
| 1843 | #define target_is_async_p() (current_top_target ()->is_async_p ()) |
| 1844 | |
| 1845 | /* Enables/disabled async target events. */ |
| 1846 | extern void target_async (int enable); |
| 1847 | |
| 1848 | /* Enables/disables thread create and exit events. */ |
| 1849 | extern void target_thread_events (int enable); |
| 1850 | |
| 1851 | /* Whether support for controlling the target backends always in |
| 1852 | non-stop mode is enabled. */ |
| 1853 | extern enum auto_boolean target_non_stop_enabled; |
| 1854 | |
| 1855 | /* Is the target in non-stop mode? Some targets control the inferior |
| 1856 | in non-stop mode even with "set non-stop off". Always true if "set |
| 1857 | non-stop" is on. */ |
| 1858 | extern int target_is_non_stop_p (void); |
| 1859 | |
| 1860 | /* Return true if at least one inferior has a non-stop target. */ |
| 1861 | extern bool exists_non_stop_target (); |
| 1862 | |
| 1863 | #define target_execution_direction() \ |
| 1864 | (current_top_target ()->execution_direction ()) |
| 1865 | |
| 1866 | /* Converts a process id to a string. Usually, the string just contains |
| 1867 | `process xyz', but on some systems it may contain |
| 1868 | `process xyz thread abc'. */ |
| 1869 | |
| 1870 | extern std::string target_pid_to_str (ptid_t ptid); |
| 1871 | |
| 1872 | extern std::string normal_pid_to_str (ptid_t ptid); |
| 1873 | |
| 1874 | /* Return a short string describing extra information about PID, |
| 1875 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value |
| 1876 | is okay. */ |
| 1877 | |
| 1878 | #define target_extra_thread_info(TP) \ |
| 1879 | (current_top_target ()->extra_thread_info (TP)) |
| 1880 | |
| 1881 | /* Return the thread's name, or NULL if the target is unable to determine it. |
| 1882 | The returned value must not be freed by the caller. */ |
| 1883 | |
| 1884 | extern const char *target_thread_name (struct thread_info *); |
| 1885 | |
| 1886 | /* Given a pointer to a thread library specific thread handle and |
| 1887 | its length, return a pointer to the corresponding thread_info struct. */ |
| 1888 | |
| 1889 | extern struct thread_info *target_thread_handle_to_thread_info |
| 1890 | (const gdb_byte *thread_handle, int handle_len, struct inferior *inf); |
| 1891 | |
| 1892 | /* Given a thread, return the thread handle, a target-specific sequence of |
| 1893 | bytes which serves as a thread identifier within the program being |
| 1894 | debugged. */ |
| 1895 | extern gdb::byte_vector target_thread_info_to_thread_handle |
| 1896 | (struct thread_info *); |
| 1897 | |
| 1898 | /* Attempts to find the pathname of the executable file |
| 1899 | that was run to create a specified process. |
| 1900 | |
| 1901 | The process PID must be stopped when this operation is used. |
| 1902 | |
| 1903 | If the executable file cannot be determined, NULL is returned. |
| 1904 | |
| 1905 | Else, a pointer to a character string containing the pathname |
| 1906 | is returned. This string should be copied into a buffer by |
| 1907 | the client if the string will not be immediately used, or if |
| 1908 | it must persist. */ |
| 1909 | |
| 1910 | #define target_pid_to_exec_file(pid) \ |
| 1911 | (current_top_target ()->pid_to_exec_file) (pid) |
| 1912 | |
| 1913 | /* See the to_thread_architecture description in struct target_ops. */ |
| 1914 | |
| 1915 | #define target_thread_architecture(ptid) \ |
| 1916 | (current_top_target ()->thread_architecture (ptid)) |
| 1917 | |
| 1918 | /* |
| 1919 | * Iterator function for target memory regions. |
| 1920 | * Calls a callback function once for each memory region 'mapped' |
| 1921 | * in the child process. Defined as a simple macro rather than |
| 1922 | * as a function macro so that it can be tested for nullity. |
| 1923 | */ |
| 1924 | |
| 1925 | #define target_find_memory_regions(FUNC, DATA) \ |
| 1926 | (current_top_target ()->find_memory_regions) (FUNC, DATA) |
| 1927 | |
| 1928 | /* |
| 1929 | * Compose corefile .note section. |
| 1930 | */ |
| 1931 | |
| 1932 | #define target_make_corefile_notes(BFD, SIZE_P) \ |
| 1933 | (current_top_target ()->make_corefile_notes) (BFD, SIZE_P) |
| 1934 | |
| 1935 | /* Bookmark interfaces. */ |
| 1936 | #define target_get_bookmark(ARGS, FROM_TTY) \ |
| 1937 | (current_top_target ()->get_bookmark) (ARGS, FROM_TTY) |
| 1938 | |
| 1939 | #define target_goto_bookmark(ARG, FROM_TTY) \ |
| 1940 | (current_top_target ()->goto_bookmark) (ARG, FROM_TTY) |
| 1941 | |
| 1942 | /* Hardware watchpoint interfaces. */ |
| 1943 | |
| 1944 | /* GDB's current model is that there are three "kinds" of watchpoints, |
| 1945 | with respect to when they trigger and how you can move past them. |
| 1946 | |
| 1947 | Those are: continuable, steppable, and non-steppable. |
| 1948 | |
| 1949 | Continuable watchpoints are like x86's -- those trigger after the |
| 1950 | memory access's side effects are fully committed to memory. I.e., |
| 1951 | they trap with the PC pointing at the next instruction already. |
| 1952 | Continuing past such a watchpoint is doable by just normally |
| 1953 | continuing, hence the name. |
| 1954 | |
| 1955 | Both steppable and non-steppable watchpoints trap before the memory |
| 1956 | access. I.e, the PC points at the instruction that is accessing |
| 1957 | the memory. So GDB needs to single-step once past the current |
| 1958 | instruction in order to make the access effective and check whether |
| 1959 | the instruction's side effects change the watched expression. |
| 1960 | |
| 1961 | Now, in order to step past that instruction, depending on |
| 1962 | architecture and target, you can have two situations: |
| 1963 | |
| 1964 | - steppable watchpoints: you can single-step with the watchpoint |
| 1965 | still armed, and the watchpoint won't trigger again. |
| 1966 | |
| 1967 | - non-steppable watchpoints: if you try to single-step with the |
| 1968 | watchpoint still armed, you'd trap the watchpoint again and the |
| 1969 | thread wouldn't make any progress. So GDB needs to temporarily |
| 1970 | remove the watchpoint in order to step past it. |
| 1971 | |
| 1972 | If your target/architecture does not signal that it has either |
| 1973 | steppable or non-steppable watchpoints via either |
| 1974 | target_have_steppable_watchpoint or |
| 1975 | gdbarch_have_nonsteppable_watchpoint, GDB assumes continuable |
| 1976 | watchpoints. */ |
| 1977 | |
| 1978 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or |
| 1979 | write). Only the INFERIOR_PTID task is being queried. */ |
| 1980 | |
| 1981 | #define target_stopped_by_watchpoint() \ |
| 1982 | ((current_top_target ()->stopped_by_watchpoint) ()) |
| 1983 | |
| 1984 | /* Returns non-zero if the target stopped because it executed a |
| 1985 | software breakpoint instruction. */ |
| 1986 | |
| 1987 | #define target_stopped_by_sw_breakpoint() \ |
| 1988 | ((current_top_target ()->stopped_by_sw_breakpoint) ()) |
| 1989 | |
| 1990 | #define target_supports_stopped_by_sw_breakpoint() \ |
| 1991 | ((current_top_target ()->supports_stopped_by_sw_breakpoint) ()) |
| 1992 | |
| 1993 | #define target_stopped_by_hw_breakpoint() \ |
| 1994 | ((current_top_target ()->stopped_by_hw_breakpoint) ()) |
| 1995 | |
| 1996 | #define target_supports_stopped_by_hw_breakpoint() \ |
| 1997 | ((current_top_target ()->supports_stopped_by_hw_breakpoint) ()) |
| 1998 | |
| 1999 | /* Non-zero if we have steppable watchpoints */ |
| 2000 | |
| 2001 | #define target_have_steppable_watchpoint \ |
| 2002 | (current_top_target ()->have_steppable_watchpoint ()) |
| 2003 | |
| 2004 | /* Provide defaults for hardware watchpoint functions. */ |
| 2005 | |
| 2006 | /* If the *_hw_beakpoint functions have not been defined |
| 2007 | elsewhere use the definitions in the target vector. */ |
| 2008 | |
| 2009 | /* Returns positive if we can set a hardware watchpoint of type TYPE. |
| 2010 | Returns negative if the target doesn't have enough hardware debug |
| 2011 | registers available. Return zero if hardware watchpoint of type |
| 2012 | TYPE isn't supported. TYPE is one of bp_hardware_watchpoint, |
| 2013 | bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint. |
| 2014 | CNT is the number of such watchpoints used so far, including this |
| 2015 | one. OTHERTYPE is the number of watchpoints of other types than |
| 2016 | this one used so far. */ |
| 2017 | |
| 2018 | #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \ |
| 2019 | (current_top_target ()->can_use_hw_breakpoint) ( \ |
| 2020 | TYPE, CNT, OTHERTYPE) |
| 2021 | |
| 2022 | /* Returns the number of debug registers needed to watch the given |
| 2023 | memory region, or zero if not supported. */ |
| 2024 | |
| 2025 | #define target_region_ok_for_hw_watchpoint(addr, len) \ |
| 2026 | (current_top_target ()->region_ok_for_hw_watchpoint) (addr, len) |
| 2027 | |
| 2028 | |
| 2029 | #define target_can_do_single_step() \ |
| 2030 | (current_top_target ()->can_do_single_step) () |
| 2031 | |
| 2032 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. |
| 2033 | TYPE is 0 for write, 1 for read, and 2 for read/write accesses. |
| 2034 | COND is the expression for its condition, or NULL if there's none. |
| 2035 | Returns 0 for success, 1 if the watchpoint type is not supported, |
| 2036 | -1 for failure. */ |
| 2037 | |
| 2038 | #define target_insert_watchpoint(addr, len, type, cond) \ |
| 2039 | (current_top_target ()->insert_watchpoint) (addr, len, type, cond) |
| 2040 | |
| 2041 | #define target_remove_watchpoint(addr, len, type, cond) \ |
| 2042 | (current_top_target ()->remove_watchpoint) (addr, len, type, cond) |
| 2043 | |
| 2044 | /* Insert a new masked watchpoint at ADDR using the mask MASK. |
| 2045 | RW may be hw_read for a read watchpoint, hw_write for a write watchpoint |
| 2046 | or hw_access for an access watchpoint. Returns 0 for success, 1 if |
| 2047 | masked watchpoints are not supported, -1 for failure. */ |
| 2048 | |
| 2049 | extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR, |
| 2050 | enum target_hw_bp_type); |
| 2051 | |
| 2052 | /* Remove a masked watchpoint at ADDR with the mask MASK. |
| 2053 | RW may be hw_read for a read watchpoint, hw_write for a write watchpoint |
| 2054 | or hw_access for an access watchpoint. Returns 0 for success, non-zero |
| 2055 | for failure. */ |
| 2056 | |
| 2057 | extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR, |
| 2058 | enum target_hw_bp_type); |
| 2059 | |
| 2060 | /* Insert a hardware breakpoint at address BP_TGT->placed_address in |
| 2061 | the target machine. Returns 0 for success, and returns non-zero or |
| 2062 | throws an error (with a detailed failure reason error code and |
| 2063 | message) otherwise. */ |
| 2064 | |
| 2065 | #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \ |
| 2066 | (current_top_target ()->insert_hw_breakpoint) (gdbarch, bp_tgt) |
| 2067 | |
| 2068 | #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \ |
| 2069 | (current_top_target ()->remove_hw_breakpoint) (gdbarch, bp_tgt) |
| 2070 | |
| 2071 | /* Return number of debug registers needed for a ranged breakpoint, |
| 2072 | or -1 if ranged breakpoints are not supported. */ |
| 2073 | |
| 2074 | extern int target_ranged_break_num_registers (void); |
| 2075 | |
| 2076 | /* Return non-zero if target knows the data address which triggered this |
| 2077 | target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the |
| 2078 | INFERIOR_PTID task is being queried. */ |
| 2079 | #define target_stopped_data_address(target, addr_p) \ |
| 2080 | (target)->stopped_data_address (addr_p) |
| 2081 | |
| 2082 | /* Return non-zero if ADDR is within the range of a watchpoint spanning |
| 2083 | LENGTH bytes beginning at START. */ |
| 2084 | #define target_watchpoint_addr_within_range(target, addr, start, length) \ |
| 2085 | (target)->watchpoint_addr_within_range (addr, start, length) |
| 2086 | |
| 2087 | /* Return non-zero if the target is capable of using hardware to evaluate |
| 2088 | the condition expression. In this case, if the condition is false when |
| 2089 | the watched memory location changes, execution may continue without the |
| 2090 | debugger being notified. |
| 2091 | |
| 2092 | Due to limitations in the hardware implementation, it may be capable of |
| 2093 | avoiding triggering the watchpoint in some cases where the condition |
| 2094 | expression is false, but may report some false positives as well. |
| 2095 | For this reason, GDB will still evaluate the condition expression when |
| 2096 | the watchpoint triggers. */ |
| 2097 | #define target_can_accel_watchpoint_condition(addr, len, type, cond) \ |
| 2098 | (current_top_target ()->can_accel_watchpoint_condition) (addr, len, type, cond) |
| 2099 | |
| 2100 | /* Return number of debug registers needed for a masked watchpoint, |
| 2101 | -1 if masked watchpoints are not supported or -2 if the given address |
| 2102 | and mask combination cannot be used. */ |
| 2103 | |
| 2104 | extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask); |
| 2105 | |
| 2106 | /* Target can execute in reverse? */ |
| 2107 | #define target_can_execute_reverse \ |
| 2108 | current_top_target ()->can_execute_reverse () |
| 2109 | |
| 2110 | extern const struct target_desc *target_read_description (struct target_ops *); |
| 2111 | |
| 2112 | #define target_get_ada_task_ptid(lwp, tid) \ |
| 2113 | (current_top_target ()->get_ada_task_ptid) (lwp,tid) |
| 2114 | |
| 2115 | /* Utility implementation of searching memory. */ |
| 2116 | extern int simple_search_memory (struct target_ops* ops, |
| 2117 | CORE_ADDR start_addr, |
| 2118 | ULONGEST search_space_len, |
| 2119 | const gdb_byte *pattern, |
| 2120 | ULONGEST pattern_len, |
| 2121 | CORE_ADDR *found_addrp); |
| 2122 | |
| 2123 | /* Main entry point for searching memory. */ |
| 2124 | extern int target_search_memory (CORE_ADDR start_addr, |
| 2125 | ULONGEST search_space_len, |
| 2126 | const gdb_byte *pattern, |
| 2127 | ULONGEST pattern_len, |
| 2128 | CORE_ADDR *found_addrp); |
| 2129 | |
| 2130 | /* Target file operations. */ |
| 2131 | |
| 2132 | /* Return nonzero if the filesystem seen by the current inferior |
| 2133 | is the local filesystem, zero otherwise. */ |
| 2134 | #define target_filesystem_is_local() \ |
| 2135 | current_top_target ()->filesystem_is_local () |
| 2136 | |
| 2137 | /* Open FILENAME on the target, in the filesystem as seen by INF, |
| 2138 | using FLAGS and MODE. If INF is NULL, use the filesystem seen |
| 2139 | by the debugger (GDB or, for remote targets, the remote stub). |
| 2140 | Return a target file descriptor, or -1 if an error occurs (and |
| 2141 | set *TARGET_ERRNO). */ |
| 2142 | extern int target_fileio_open (struct inferior *inf, |
| 2143 | const char *filename, int flags, |
| 2144 | int mode, int *target_errno); |
| 2145 | |
| 2146 | /* Like target_fileio_open, but print a warning message if the |
| 2147 | file is being accessed over a link that may be slow. */ |
| 2148 | extern int target_fileio_open_warn_if_slow (struct inferior *inf, |
| 2149 | const char *filename, |
| 2150 | int flags, |
| 2151 | int mode, |
| 2152 | int *target_errno); |
| 2153 | |
| 2154 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. |
| 2155 | Return the number of bytes written, or -1 if an error occurs |
| 2156 | (and set *TARGET_ERRNO). */ |
| 2157 | extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, |
| 2158 | ULONGEST offset, int *target_errno); |
| 2159 | |
| 2160 | /* Read up to LEN bytes FD on the target into READ_BUF. |
| 2161 | Return the number of bytes read, or -1 if an error occurs |
| 2162 | (and set *TARGET_ERRNO). */ |
| 2163 | extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len, |
| 2164 | ULONGEST offset, int *target_errno); |
| 2165 | |
| 2166 | /* Get information about the file opened as FD on the target |
| 2167 | and put it in SB. Return 0 on success, or -1 if an error |
| 2168 | occurs (and set *TARGET_ERRNO). */ |
| 2169 | extern int target_fileio_fstat (int fd, struct stat *sb, |
| 2170 | int *target_errno); |
| 2171 | |
| 2172 | /* Close FD on the target. Return 0, or -1 if an error occurs |
| 2173 | (and set *TARGET_ERRNO). */ |
| 2174 | extern int target_fileio_close (int fd, int *target_errno); |
| 2175 | |
| 2176 | /* Unlink FILENAME on the target, in the filesystem as seen by INF. |
| 2177 | If INF is NULL, use the filesystem seen by the debugger (GDB or, |
| 2178 | for remote targets, the remote stub). Return 0, or -1 if an error |
| 2179 | occurs (and set *TARGET_ERRNO). */ |
| 2180 | extern int target_fileio_unlink (struct inferior *inf, |
| 2181 | const char *filename, |
| 2182 | int *target_errno); |
| 2183 | |
| 2184 | /* Read value of symbolic link FILENAME on the target, in the |
| 2185 | filesystem as seen by INF. If INF is NULL, use the filesystem seen |
| 2186 | by the debugger (GDB or, for remote targets, the remote stub). |
| 2187 | Return a null-terminated string allocated via xmalloc, or NULL if |
| 2188 | an error occurs (and set *TARGET_ERRNO). */ |
| 2189 | extern gdb::optional<std::string> target_fileio_readlink |
| 2190 | (struct inferior *inf, const char *filename, int *target_errno); |
| 2191 | |
| 2192 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
| 2193 | INF is NULL, use the filesystem seen by the debugger (GDB or, for |
| 2194 | remote targets, the remote stub). The return value will be -1 if |
| 2195 | the transfer fails or is not supported; 0 if the object is empty; |
| 2196 | or the length of the object otherwise. If a positive value is |
| 2197 | returned, a sufficiently large buffer will be allocated using |
| 2198 | xmalloc and returned in *BUF_P containing the contents of the |
| 2199 | object. |
| 2200 | |
| 2201 | This method should be used for objects sufficiently small to store |
| 2202 | in a single xmalloc'd buffer, when no fixed bound on the object's |
| 2203 | size is known in advance. */ |
| 2204 | extern LONGEST target_fileio_read_alloc (struct inferior *inf, |
| 2205 | const char *filename, |
| 2206 | gdb_byte **buf_p); |
| 2207 | |
| 2208 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
| 2209 | INF is NULL, use the filesystem seen by the debugger (GDB or, for |
| 2210 | remote targets, the remote stub). The result is NUL-terminated and |
| 2211 | returned as a string, allocated using xmalloc. If an error occurs |
| 2212 | or the transfer is unsupported, NULL is returned. Empty objects |
| 2213 | are returned as allocated but empty strings. A warning is issued |
| 2214 | if the result contains any embedded NUL bytes. */ |
| 2215 | extern gdb::unique_xmalloc_ptr<char> target_fileio_read_stralloc |
| 2216 | (struct inferior *inf, const char *filename); |
| 2217 | |
| 2218 | |
| 2219 | /* Tracepoint-related operations. */ |
| 2220 | |
| 2221 | #define target_trace_init() \ |
| 2222 | (current_top_target ()->trace_init) () |
| 2223 | |
| 2224 | #define target_download_tracepoint(t) \ |
| 2225 | (current_top_target ()->download_tracepoint) (t) |
| 2226 | |
| 2227 | #define target_can_download_tracepoint() \ |
| 2228 | (current_top_target ()->can_download_tracepoint) () |
| 2229 | |
| 2230 | #define target_download_trace_state_variable(tsv) \ |
| 2231 | (current_top_target ()->download_trace_state_variable) (tsv) |
| 2232 | |
| 2233 | #define target_enable_tracepoint(loc) \ |
| 2234 | (current_top_target ()->enable_tracepoint) (loc) |
| 2235 | |
| 2236 | #define target_disable_tracepoint(loc) \ |
| 2237 | (current_top_target ()->disable_tracepoint) (loc) |
| 2238 | |
| 2239 | #define target_trace_start() \ |
| 2240 | (current_top_target ()->trace_start) () |
| 2241 | |
| 2242 | #define target_trace_set_readonly_regions() \ |
| 2243 | (current_top_target ()->trace_set_readonly_regions) () |
| 2244 | |
| 2245 | #define target_get_trace_status(ts) \ |
| 2246 | (current_top_target ()->get_trace_status) (ts) |
| 2247 | |
| 2248 | #define target_get_tracepoint_status(tp,utp) \ |
| 2249 | (current_top_target ()->get_tracepoint_status) (tp, utp) |
| 2250 | |
| 2251 | #define target_trace_stop() \ |
| 2252 | (current_top_target ()->trace_stop) () |
| 2253 | |
| 2254 | #define target_trace_find(type,num,addr1,addr2,tpp) \ |
| 2255 | (current_top_target ()->trace_find) (\ |
| 2256 | (type), (num), (addr1), (addr2), (tpp)) |
| 2257 | |
| 2258 | #define target_get_trace_state_variable_value(tsv,val) \ |
| 2259 | (current_top_target ()->get_trace_state_variable_value) ((tsv), (val)) |
| 2260 | |
| 2261 | #define target_save_trace_data(filename) \ |
| 2262 | (current_top_target ()->save_trace_data) (filename) |
| 2263 | |
| 2264 | #define target_upload_tracepoints(utpp) \ |
| 2265 | (current_top_target ()->upload_tracepoints) (utpp) |
| 2266 | |
| 2267 | #define target_upload_trace_state_variables(utsvp) \ |
| 2268 | (current_top_target ()->upload_trace_state_variables) (utsvp) |
| 2269 | |
| 2270 | #define target_get_raw_trace_data(buf,offset,len) \ |
| 2271 | (current_top_target ()->get_raw_trace_data) ((buf), (offset), (len)) |
| 2272 | |
| 2273 | #define target_get_min_fast_tracepoint_insn_len() \ |
| 2274 | (current_top_target ()->get_min_fast_tracepoint_insn_len) () |
| 2275 | |
| 2276 | #define target_set_disconnected_tracing(val) \ |
| 2277 | (current_top_target ()->set_disconnected_tracing) (val) |
| 2278 | |
| 2279 | #define target_set_circular_trace_buffer(val) \ |
| 2280 | (current_top_target ()->set_circular_trace_buffer) (val) |
| 2281 | |
| 2282 | #define target_set_trace_buffer_size(val) \ |
| 2283 | (current_top_target ()->set_trace_buffer_size) (val) |
| 2284 | |
| 2285 | #define target_set_trace_notes(user,notes,stopnotes) \ |
| 2286 | (current_top_target ()->set_trace_notes) ((user), (notes), (stopnotes)) |
| 2287 | |
| 2288 | #define target_get_tib_address(ptid, addr) \ |
| 2289 | (current_top_target ()->get_tib_address) ((ptid), (addr)) |
| 2290 | |
| 2291 | #define target_set_permissions() \ |
| 2292 | (current_top_target ()->set_permissions) () |
| 2293 | |
| 2294 | #define target_static_tracepoint_marker_at(addr, marker) \ |
| 2295 | (current_top_target ()->static_tracepoint_marker_at) (addr, marker) |
| 2296 | |
| 2297 | #define target_static_tracepoint_markers_by_strid(marker_id) \ |
| 2298 | (current_top_target ()->static_tracepoint_markers_by_strid) (marker_id) |
| 2299 | |
| 2300 | #define target_traceframe_info() \ |
| 2301 | (current_top_target ()->traceframe_info) () |
| 2302 | |
| 2303 | #define target_use_agent(use) \ |
| 2304 | (current_top_target ()->use_agent) (use) |
| 2305 | |
| 2306 | #define target_can_use_agent() \ |
| 2307 | (current_top_target ()->can_use_agent) () |
| 2308 | |
| 2309 | #define target_augmented_libraries_svr4_read() \ |
| 2310 | (current_top_target ()->augmented_libraries_svr4_read) () |
| 2311 | |
| 2312 | /* Command logging facility. */ |
| 2313 | |
| 2314 | #define target_log_command(p) \ |
| 2315 | (current_top_target ()->log_command) (p) |
| 2316 | |
| 2317 | |
| 2318 | extern int target_core_of_thread (ptid_t ptid); |
| 2319 | |
| 2320 | /* See to_get_unwinder in struct target_ops. */ |
| 2321 | extern const struct frame_unwind *target_get_unwinder (void); |
| 2322 | |
| 2323 | /* See to_get_tailcall_unwinder in struct target_ops. */ |
| 2324 | extern const struct frame_unwind *target_get_tailcall_unwinder (void); |
| 2325 | |
| 2326 | /* This implements basic memory verification, reading target memory |
| 2327 | and performing the comparison here (as opposed to accelerated |
| 2328 | verification making use of the qCRC packet, for example). */ |
| 2329 | |
| 2330 | extern int simple_verify_memory (struct target_ops* ops, |
| 2331 | const gdb_byte *data, |
| 2332 | CORE_ADDR memaddr, ULONGEST size); |
| 2333 | |
| 2334 | /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches |
| 2335 | the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0 |
| 2336 | if there's a mismatch, and -1 if an error is encountered while |
| 2337 | reading memory. Throws an error if the functionality is found not |
| 2338 | to be supported by the current target. */ |
| 2339 | int target_verify_memory (const gdb_byte *data, |
| 2340 | CORE_ADDR memaddr, ULONGEST size); |
| 2341 | |
| 2342 | /* Routines for maintenance of the target structures... |
| 2343 | |
| 2344 | add_target: Add a target to the list of all possible targets. |
| 2345 | This only makes sense for targets that should be activated using |
| 2346 | the "target TARGET_NAME ..." command. |
| 2347 | |
| 2348 | push_target: Make this target the top of the stack of currently used |
| 2349 | targets, within its particular stratum of the stack. Result |
| 2350 | is 0 if now atop the stack, nonzero if not on top (maybe |
| 2351 | should warn user). |
| 2352 | |
| 2353 | unpush_target: Remove this from the stack of currently used targets, |
| 2354 | no matter where it is on the list. Returns 0 if no |
| 2355 | change, 1 if removed from stack. */ |
| 2356 | |
| 2357 | /* Type of callback called when the user activates a target with |
| 2358 | "target TARGET_NAME". The callback routine takes the rest of the |
| 2359 | parameters from the command, and (if successful) pushes a new |
| 2360 | target onto the stack. */ |
| 2361 | typedef void target_open_ftype (const char *args, int from_tty); |
| 2362 | |
| 2363 | /* Add the target described by INFO to the list of possible targets |
| 2364 | and add a new command 'target $(INFO->shortname)'. Set COMPLETER |
| 2365 | as the command's completer if not NULL. */ |
| 2366 | |
| 2367 | extern void add_target (const target_info &info, |
| 2368 | target_open_ftype *func, |
| 2369 | completer_ftype *completer = NULL); |
| 2370 | |
| 2371 | /* Adds a command ALIAS for the target described by INFO and marks it |
| 2372 | deprecated. This is useful for maintaining backwards compatibility |
| 2373 | when renaming targets. */ |
| 2374 | |
| 2375 | extern void add_deprecated_target_alias (const target_info &info, |
| 2376 | const char *alias); |
| 2377 | |
| 2378 | extern void push_target (struct target_ops *); |
| 2379 | |
| 2380 | /* An overload that deletes the target on failure. */ |
| 2381 | extern void push_target (target_ops_up &&); |
| 2382 | |
| 2383 | extern int unpush_target (struct target_ops *); |
| 2384 | |
| 2385 | extern void target_pre_inferior (int); |
| 2386 | |
| 2387 | extern void target_preopen (int); |
| 2388 | |
| 2389 | /* Does whatever cleanup is required to get rid of all pushed targets. */ |
| 2390 | extern void pop_all_targets (void); |
| 2391 | |
| 2392 | /* Like pop_all_targets, but pops only targets whose stratum is at or |
| 2393 | above STRATUM. */ |
| 2394 | extern void pop_all_targets_at_and_above (enum strata stratum); |
| 2395 | |
| 2396 | /* Like pop_all_targets, but pops only targets whose stratum is |
| 2397 | strictly above ABOVE_STRATUM. */ |
| 2398 | extern void pop_all_targets_above (enum strata above_stratum); |
| 2399 | |
| 2400 | extern bool target_is_pushed (target_ops *t); |
| 2401 | |
| 2402 | extern CORE_ADDR target_translate_tls_address (struct objfile *objfile, |
| 2403 | CORE_ADDR offset); |
| 2404 | |
| 2405 | /* Struct target_section maps address ranges to file sections. It is |
| 2406 | mostly used with BFD files, but can be used without (e.g. for handling |
| 2407 | raw disks, or files not in formats handled by BFD). */ |
| 2408 | |
| 2409 | struct target_section |
| 2410 | { |
| 2411 | CORE_ADDR addr; /* Lowest address in section */ |
| 2412 | CORE_ADDR endaddr; /* 1+highest address in section */ |
| 2413 | |
| 2414 | struct bfd_section *the_bfd_section; |
| 2415 | |
| 2416 | /* The "owner" of the section. |
| 2417 | It can be any unique value. It is set by add_target_sections |
| 2418 | and used by remove_target_sections. |
| 2419 | For example, for executables it is a pointer to exec_bfd and |
| 2420 | for shlibs it is the so_list pointer. */ |
| 2421 | void *owner; |
| 2422 | }; |
| 2423 | |
| 2424 | /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */ |
| 2425 | |
| 2426 | struct target_section_table |
| 2427 | { |
| 2428 | struct target_section *sections; |
| 2429 | struct target_section *sections_end; |
| 2430 | }; |
| 2431 | |
| 2432 | /* Return the "section" containing the specified address. */ |
| 2433 | struct target_section *target_section_by_addr (struct target_ops *target, |
| 2434 | CORE_ADDR addr); |
| 2435 | |
| 2436 | /* Return the target section table this target (or the targets |
| 2437 | beneath) currently manipulate. */ |
| 2438 | |
| 2439 | extern struct target_section_table *target_get_section_table |
| 2440 | (struct target_ops *target); |
| 2441 | |
| 2442 | /* From mem-break.c */ |
| 2443 | |
| 2444 | extern int memory_remove_breakpoint (struct target_ops *, |
| 2445 | struct gdbarch *, struct bp_target_info *, |
| 2446 | enum remove_bp_reason); |
| 2447 | |
| 2448 | extern int memory_insert_breakpoint (struct target_ops *, |
| 2449 | struct gdbarch *, struct bp_target_info *); |
| 2450 | |
| 2451 | /* Convenience template use to add memory breakpoints support to a |
| 2452 | target. */ |
| 2453 | |
| 2454 | template <typename BaseTarget> |
| 2455 | struct memory_breakpoint_target : public BaseTarget |
| 2456 | { |
| 2457 | int insert_breakpoint (struct gdbarch *gdbarch, |
| 2458 | struct bp_target_info *bp_tgt) override |
| 2459 | { return memory_insert_breakpoint (this, gdbarch, bp_tgt); } |
| 2460 | |
| 2461 | int remove_breakpoint (struct gdbarch *gdbarch, |
| 2462 | struct bp_target_info *bp_tgt, |
| 2463 | enum remove_bp_reason reason) override |
| 2464 | { return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); } |
| 2465 | }; |
| 2466 | |
| 2467 | /* Check whether the memory at the breakpoint's placed address still |
| 2468 | contains the expected breakpoint instruction. */ |
| 2469 | |
| 2470 | extern int memory_validate_breakpoint (struct gdbarch *gdbarch, |
| 2471 | struct bp_target_info *bp_tgt); |
| 2472 | |
| 2473 | extern int default_memory_remove_breakpoint (struct gdbarch *, |
| 2474 | struct bp_target_info *); |
| 2475 | |
| 2476 | extern int default_memory_insert_breakpoint (struct gdbarch *, |
| 2477 | struct bp_target_info *); |
| 2478 | |
| 2479 | |
| 2480 | /* From target.c */ |
| 2481 | |
| 2482 | extern void initialize_targets (void); |
| 2483 | |
| 2484 | extern void noprocess (void) ATTRIBUTE_NORETURN; |
| 2485 | |
| 2486 | extern void target_require_runnable (void); |
| 2487 | |
| 2488 | /* Find the target at STRATUM. If no target is at that stratum, |
| 2489 | return NULL. */ |
| 2490 | |
| 2491 | struct target_ops *find_target_at (enum strata stratum); |
| 2492 | |
| 2493 | /* Read OS data object of type TYPE from the target, and return it in XML |
| 2494 | format. The return value follows the same rules as target_read_stralloc. */ |
| 2495 | |
| 2496 | extern gdb::optional<gdb::char_vector> target_get_osdata (const char *type); |
| 2497 | |
| 2498 | /* Stuff that should be shared among the various remote targets. */ |
| 2499 | |
| 2500 | /* Debugging level. 0 is off, and non-zero values mean to print some debug |
| 2501 | information (higher values, more information). */ |
| 2502 | extern int remote_debug; |
| 2503 | |
| 2504 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ |
| 2505 | extern int baud_rate; |
| 2506 | |
| 2507 | /* Parity for serial port */ |
| 2508 | extern int serial_parity; |
| 2509 | |
| 2510 | /* Timeout limit for response from target. */ |
| 2511 | extern int remote_timeout; |
| 2512 | |
| 2513 | \f |
| 2514 | |
| 2515 | /* Set the show memory breakpoints mode to show, and return a |
| 2516 | scoped_restore to restore it back to the current value. */ |
| 2517 | extern scoped_restore_tmpl<int> |
| 2518 | make_scoped_restore_show_memory_breakpoints (int show); |
| 2519 | |
| 2520 | extern bool may_write_registers; |
| 2521 | extern bool may_write_memory; |
| 2522 | extern bool may_insert_breakpoints; |
| 2523 | extern bool may_insert_tracepoints; |
| 2524 | extern bool may_insert_fast_tracepoints; |
| 2525 | extern bool may_stop; |
| 2526 | |
| 2527 | extern void update_target_permissions (void); |
| 2528 | |
| 2529 | \f |
| 2530 | /* Imported from machine dependent code. */ |
| 2531 | |
| 2532 | /* See to_enable_btrace in struct target_ops. */ |
| 2533 | extern struct btrace_target_info * |
| 2534 | target_enable_btrace (ptid_t ptid, const struct btrace_config *); |
| 2535 | |
| 2536 | /* See to_disable_btrace in struct target_ops. */ |
| 2537 | extern void target_disable_btrace (struct btrace_target_info *btinfo); |
| 2538 | |
| 2539 | /* See to_teardown_btrace in struct target_ops. */ |
| 2540 | extern void target_teardown_btrace (struct btrace_target_info *btinfo); |
| 2541 | |
| 2542 | /* See to_read_btrace in struct target_ops. */ |
| 2543 | extern enum btrace_error target_read_btrace (struct btrace_data *, |
| 2544 | struct btrace_target_info *, |
| 2545 | enum btrace_read_type); |
| 2546 | |
| 2547 | /* See to_btrace_conf in struct target_ops. */ |
| 2548 | extern const struct btrace_config * |
| 2549 | target_btrace_conf (const struct btrace_target_info *); |
| 2550 | |
| 2551 | /* See to_stop_recording in struct target_ops. */ |
| 2552 | extern void target_stop_recording (void); |
| 2553 | |
| 2554 | /* See to_save_record in struct target_ops. */ |
| 2555 | extern void target_save_record (const char *filename); |
| 2556 | |
| 2557 | /* Query if the target supports deleting the execution log. */ |
| 2558 | extern int target_supports_delete_record (void); |
| 2559 | |
| 2560 | /* See to_delete_record in struct target_ops. */ |
| 2561 | extern void target_delete_record (void); |
| 2562 | |
| 2563 | /* See to_record_method. */ |
| 2564 | extern enum record_method target_record_method (ptid_t ptid); |
| 2565 | |
| 2566 | /* See to_record_is_replaying in struct target_ops. */ |
| 2567 | extern int target_record_is_replaying (ptid_t ptid); |
| 2568 | |
| 2569 | /* See to_record_will_replay in struct target_ops. */ |
| 2570 | extern int target_record_will_replay (ptid_t ptid, int dir); |
| 2571 | |
| 2572 | /* See to_record_stop_replaying in struct target_ops. */ |
| 2573 | extern void target_record_stop_replaying (void); |
| 2574 | |
| 2575 | /* See to_goto_record_begin in struct target_ops. */ |
| 2576 | extern void target_goto_record_begin (void); |
| 2577 | |
| 2578 | /* See to_goto_record_end in struct target_ops. */ |
| 2579 | extern void target_goto_record_end (void); |
| 2580 | |
| 2581 | /* See to_goto_record in struct target_ops. */ |
| 2582 | extern void target_goto_record (ULONGEST insn); |
| 2583 | |
| 2584 | /* See to_insn_history. */ |
| 2585 | extern void target_insn_history (int size, gdb_disassembly_flags flags); |
| 2586 | |
| 2587 | /* See to_insn_history_from. */ |
| 2588 | extern void target_insn_history_from (ULONGEST from, int size, |
| 2589 | gdb_disassembly_flags flags); |
| 2590 | |
| 2591 | /* See to_insn_history_range. */ |
| 2592 | extern void target_insn_history_range (ULONGEST begin, ULONGEST end, |
| 2593 | gdb_disassembly_flags flags); |
| 2594 | |
| 2595 | /* See to_call_history. */ |
| 2596 | extern void target_call_history (int size, record_print_flags flags); |
| 2597 | |
| 2598 | /* See to_call_history_from. */ |
| 2599 | extern void target_call_history_from (ULONGEST begin, int size, |
| 2600 | record_print_flags flags); |
| 2601 | |
| 2602 | /* See to_call_history_range. */ |
| 2603 | extern void target_call_history_range (ULONGEST begin, ULONGEST end, |
| 2604 | record_print_flags flags); |
| 2605 | |
| 2606 | /* See to_prepare_to_generate_core. */ |
| 2607 | extern void target_prepare_to_generate_core (void); |
| 2608 | |
| 2609 | /* See to_done_generating_core. */ |
| 2610 | extern void target_done_generating_core (void); |
| 2611 | |
| 2612 | #endif /* !defined (TARGET_H) */ |