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