| 1 | /* Target operations for the remote server for GDB. |
| 2 | Copyright (C) 2002-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | Contributed by MontaVista Software. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #ifndef GDBSERVER_TARGET_H |
| 22 | #define GDBSERVER_TARGET_H |
| 23 | |
| 24 | #include <sys/types.h> /* for mode_t */ |
| 25 | #include "target/target.h" |
| 26 | #include "target/resume.h" |
| 27 | #include "target/wait.h" |
| 28 | #include "target/waitstatus.h" |
| 29 | #include "mem-break.h" |
| 30 | #include "gdbsupport/btrace-common.h" |
| 31 | #include <vector> |
| 32 | |
| 33 | struct emit_ops; |
| 34 | struct buffer; |
| 35 | struct process_info; |
| 36 | |
| 37 | /* This structure describes how to resume a particular thread (or all |
| 38 | threads) based on the client's request. If thread is -1, then this |
| 39 | entry applies to all threads. These are passed around as an |
| 40 | array. */ |
| 41 | |
| 42 | struct thread_resume |
| 43 | { |
| 44 | ptid_t thread; |
| 45 | |
| 46 | /* How to "resume". */ |
| 47 | enum resume_kind kind; |
| 48 | |
| 49 | /* If non-zero, send this signal when we resume, or to stop the |
| 50 | thread. If stopping a thread, and this is 0, the target should |
| 51 | stop the thread however it best decides to (e.g., SIGSTOP on |
| 52 | linux; SuspendThread on win32). This is a host signal value (not |
| 53 | enum gdb_signal). */ |
| 54 | int sig; |
| 55 | |
| 56 | /* Range to single step within. Valid only iff KIND is resume_step. |
| 57 | |
| 58 | Single-step once, and then continuing stepping as long as the |
| 59 | thread stops in this range. (If the range is empty |
| 60 | [STEP_RANGE_START == STEP_RANGE_END], then this is a single-step |
| 61 | request.) */ |
| 62 | CORE_ADDR step_range_start; /* Inclusive */ |
| 63 | CORE_ADDR step_range_end; /* Exclusive */ |
| 64 | }; |
| 65 | |
| 66 | class process_target; |
| 67 | |
| 68 | /* GDBserver doesn't have a concept of strata like GDB, but we call |
| 69 | its target vector "process_stratum" anyway for the benefit of |
| 70 | shared code. */ |
| 71 | struct process_stratum_target |
| 72 | { |
| 73 | /* Return 1 iff the thread with process ID PID is alive. */ |
| 74 | |
| 75 | int (*thread_alive) (ptid_t pid); |
| 76 | |
| 77 | /* Resume the inferior process. */ |
| 78 | |
| 79 | void (*resume) (struct thread_resume *resume_info, size_t n); |
| 80 | |
| 81 | /* Wait for the inferior process or thread to change state. Store |
| 82 | status through argument pointer STATUS. |
| 83 | |
| 84 | PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to |
| 85 | wait for any thread of process pid to do something. Return ptid |
| 86 | of child, or -1 in case of error; store status through argument |
| 87 | pointer STATUS. OPTIONS is a bit set of options defined as |
| 88 | TARGET_W* above. If options contains TARGET_WNOHANG and there's |
| 89 | no child stop to report, return is |
| 90 | null_ptid/TARGET_WAITKIND_IGNORE. */ |
| 91 | |
| 92 | ptid_t (*wait) (ptid_t ptid, struct target_waitstatus *status, int options); |
| 93 | |
| 94 | /* Fetch registers from the inferior process. |
| 95 | |
| 96 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ |
| 97 | |
| 98 | void (*fetch_registers) (struct regcache *regcache, int regno); |
| 99 | |
| 100 | /* Store registers to the inferior process. |
| 101 | |
| 102 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ |
| 103 | |
| 104 | void (*store_registers) (struct regcache *regcache, int regno); |
| 105 | |
| 106 | /* Prepare to read or write memory from the inferior process. |
| 107 | Targets use this to do what is necessary to get the state of the |
| 108 | inferior such that it is possible to access memory. |
| 109 | |
| 110 | This should generally only be called from client facing routines, |
| 111 | such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint |
| 112 | insertion routine. |
| 113 | |
| 114 | Like `read_memory' and `write_memory' below, returns 0 on success |
| 115 | and errno on failure. */ |
| 116 | |
| 117 | int (*prepare_to_access_memory) (void); |
| 118 | |
| 119 | /* Undo the effects of prepare_to_access_memory. */ |
| 120 | |
| 121 | void (*done_accessing_memory) (void); |
| 122 | |
| 123 | /* Read memory from the inferior process. This should generally be |
| 124 | called through read_inferior_memory, which handles breakpoint shadowing. |
| 125 | |
| 126 | Read LEN bytes at MEMADDR into a buffer at MYADDR. |
| 127 | |
| 128 | Returns 0 on success and errno on failure. */ |
| 129 | |
| 130 | int (*read_memory) (CORE_ADDR memaddr, unsigned char *myaddr, int len); |
| 131 | |
| 132 | /* Write memory to the inferior process. This should generally be |
| 133 | called through target_write_memory, which handles breakpoint shadowing. |
| 134 | |
| 135 | Write LEN bytes from the buffer at MYADDR to MEMADDR. |
| 136 | |
| 137 | Returns 0 on success and errno on failure. */ |
| 138 | |
| 139 | int (*write_memory) (CORE_ADDR memaddr, const unsigned char *myaddr, |
| 140 | int len); |
| 141 | |
| 142 | /* Query GDB for the values of any symbols we're interested in. |
| 143 | This function is called whenever we receive a "qSymbols::" |
| 144 | query, which corresponds to every time more symbols (might) |
| 145 | become available. NULL if we aren't interested in any |
| 146 | symbols. */ |
| 147 | |
| 148 | void (*look_up_symbols) (void); |
| 149 | |
| 150 | /* Send an interrupt request to the inferior process, |
| 151 | however is appropriate. */ |
| 152 | |
| 153 | void (*request_interrupt) (void); |
| 154 | |
| 155 | /* Read auxiliary vector data from the inferior process. |
| 156 | |
| 157 | Read LEN bytes at OFFSET into a buffer at MYADDR. */ |
| 158 | |
| 159 | int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr, |
| 160 | unsigned int len); |
| 161 | |
| 162 | /* Returns true if GDB Z breakpoint type TYPE is supported, false |
| 163 | otherwise. The type is coded as follows: |
| 164 | '0' - software-breakpoint |
| 165 | '1' - hardware-breakpoint |
| 166 | '2' - write watchpoint |
| 167 | '3' - read watchpoint |
| 168 | '4' - access watchpoint |
| 169 | */ |
| 170 | int (*supports_z_point_type) (char z_type); |
| 171 | |
| 172 | /* Insert and remove a break or watchpoint. |
| 173 | Returns 0 on success, -1 on failure and 1 on unsupported. */ |
| 174 | |
| 175 | int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr, |
| 176 | int size, struct raw_breakpoint *bp); |
| 177 | int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr, |
| 178 | int size, struct raw_breakpoint *bp); |
| 179 | |
| 180 | /* Returns 1 if the target stopped because it executed a software |
| 181 | breakpoint instruction, 0 otherwise. */ |
| 182 | int (*stopped_by_sw_breakpoint) (void); |
| 183 | |
| 184 | /* Returns true if the target knows whether a trap was caused by a |
| 185 | SW breakpoint triggering. */ |
| 186 | int (*supports_stopped_by_sw_breakpoint) (void); |
| 187 | |
| 188 | /* Returns 1 if the target stopped for a hardware breakpoint. */ |
| 189 | int (*stopped_by_hw_breakpoint) (void); |
| 190 | |
| 191 | /* Returns true if the target knows whether a trap was caused by a |
| 192 | HW breakpoint triggering. */ |
| 193 | int (*supports_stopped_by_hw_breakpoint) (void); |
| 194 | |
| 195 | /* Returns true if the target can do hardware single step. */ |
| 196 | int (*supports_hardware_single_step) (void); |
| 197 | |
| 198 | /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */ |
| 199 | |
| 200 | int (*stopped_by_watchpoint) (void); |
| 201 | |
| 202 | /* Returns the address associated with the watchpoint that hit, if any; |
| 203 | returns 0 otherwise. */ |
| 204 | |
| 205 | CORE_ADDR (*stopped_data_address) (void); |
| 206 | |
| 207 | /* Reports the text, data offsets of the executable. This is |
| 208 | needed for uclinux where the executable is relocated during load |
| 209 | time. */ |
| 210 | |
| 211 | int (*read_offsets) (CORE_ADDR *text, CORE_ADDR *data); |
| 212 | |
| 213 | /* Fetch the address associated with a specific thread local storage |
| 214 | area, determined by the specified THREAD, OFFSET, and LOAD_MODULE. |
| 215 | Stores it in *ADDRESS and returns zero on success; otherwise returns |
| 216 | an error code. A return value of -1 means this system does not |
| 217 | support the operation. */ |
| 218 | |
| 219 | int (*get_tls_address) (struct thread_info *thread, CORE_ADDR offset, |
| 220 | CORE_ADDR load_module, CORE_ADDR *address); |
| 221 | |
| 222 | /* Fill BUF with an hostio error packet representing the last hostio |
| 223 | error. */ |
| 224 | void (*hostio_last_error) (char *buf); |
| 225 | |
| 226 | /* Read/Write OS data using qXfer packets. */ |
| 227 | int (*qxfer_osdata) (const char *annex, unsigned char *readbuf, |
| 228 | unsigned const char *writebuf, CORE_ADDR offset, |
| 229 | int len); |
| 230 | |
| 231 | /* Read/Write extra signal info. */ |
| 232 | int (*qxfer_siginfo) (const char *annex, unsigned char *readbuf, |
| 233 | unsigned const char *writebuf, |
| 234 | CORE_ADDR offset, int len); |
| 235 | |
| 236 | int (*supports_non_stop) (void); |
| 237 | |
| 238 | /* Enables async target events. Returns the previous enable |
| 239 | state. */ |
| 240 | int (*async) (int enable); |
| 241 | |
| 242 | /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on |
| 243 | success, -1 otherwise. */ |
| 244 | int (*start_non_stop) (int); |
| 245 | |
| 246 | /* Returns true if the target supports multi-process debugging. */ |
| 247 | int (*supports_multi_process) (void); |
| 248 | |
| 249 | /* Returns true if fork events are supported. */ |
| 250 | int (*supports_fork_events) (void); |
| 251 | |
| 252 | /* Returns true if vfork events are supported. */ |
| 253 | int (*supports_vfork_events) (void); |
| 254 | |
| 255 | /* Returns true if exec events are supported. */ |
| 256 | int (*supports_exec_events) (void); |
| 257 | |
| 258 | /* Allows target to re-initialize connection-specific settings. */ |
| 259 | void (*handle_new_gdb_connection) (void); |
| 260 | |
| 261 | /* If not NULL, target-specific routine to process monitor command. |
| 262 | Returns 1 if handled, or 0 to perform default processing. */ |
| 263 | int (*handle_monitor_command) (char *); |
| 264 | |
| 265 | /* Returns the core given a thread, or -1 if not known. */ |
| 266 | int (*core_of_thread) (ptid_t); |
| 267 | |
| 268 | /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */ |
| 269 | int (*read_loadmap) (const char *annex, CORE_ADDR offset, |
| 270 | unsigned char *myaddr, unsigned int len); |
| 271 | |
| 272 | /* Target specific qSupported support. FEATURES is an array of |
| 273 | features with COUNT elements. */ |
| 274 | void (*process_qsupported) (char **features, int count); |
| 275 | |
| 276 | /* Return 1 if the target supports tracepoints, 0 (or leave the |
| 277 | callback NULL) otherwise. */ |
| 278 | int (*supports_tracepoints) (void); |
| 279 | |
| 280 | /* Read PC from REGCACHE. */ |
| 281 | CORE_ADDR (*read_pc) (struct regcache *regcache); |
| 282 | |
| 283 | /* Write PC to REGCACHE. */ |
| 284 | void (*write_pc) (struct regcache *regcache, CORE_ADDR pc); |
| 285 | |
| 286 | /* Return true if THREAD is known to be stopped now. */ |
| 287 | int (*thread_stopped) (struct thread_info *thread); |
| 288 | |
| 289 | /* Read Thread Information Block address. */ |
| 290 | int (*get_tib_address) (ptid_t ptid, CORE_ADDR *address); |
| 291 | |
| 292 | /* Pause all threads. If FREEZE, arrange for any resume attempt to |
| 293 | be ignored until an unpause_all call unfreezes threads again. |
| 294 | There can be nested calls to pause_all, so a freeze counter |
| 295 | should be maintained. */ |
| 296 | void (*pause_all) (int freeze); |
| 297 | |
| 298 | /* Unpause all threads. Threads that hadn't been resumed by the |
| 299 | client should be left stopped. Basically a pause/unpause call |
| 300 | pair should not end up resuming threads that were stopped before |
| 301 | the pause call. */ |
| 302 | void (*unpause_all) (int unfreeze); |
| 303 | |
| 304 | /* Stabilize all threads. That is, force them out of jump pads. */ |
| 305 | void (*stabilize_threads) (void); |
| 306 | |
| 307 | /* Install a fast tracepoint jump pad. TPOINT is the address of the |
| 308 | tracepoint internal object as used by the IPA agent. TPADDR is |
| 309 | the address of tracepoint. COLLECTOR is address of the function |
| 310 | the jump pad redirects to. LOCKADDR is the address of the jump |
| 311 | pad lock object. ORIG_SIZE is the size in bytes of the |
| 312 | instruction at TPADDR. JUMP_ENTRY points to the address of the |
| 313 | jump pad entry, and on return holds the address past the end of |
| 314 | the created jump pad. If a trampoline is created by the function, |
| 315 | then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of |
| 316 | the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a |
| 317 | buffer containing a copy of the instruction at TPADDR. |
| 318 | ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that |
| 319 | return the address range where the instruction at TPADDR was relocated |
| 320 | to. If an error occurs, the ERR may be used to pass on an error |
| 321 | message. */ |
| 322 | int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr, |
| 323 | CORE_ADDR collector, |
| 324 | CORE_ADDR lockaddr, |
| 325 | ULONGEST orig_size, |
| 326 | CORE_ADDR *jump_entry, |
| 327 | CORE_ADDR *trampoline, |
| 328 | ULONGEST *trampoline_size, |
| 329 | unsigned char *jjump_pad_insn, |
| 330 | ULONGEST *jjump_pad_insn_size, |
| 331 | CORE_ADDR *adjusted_insn_addr, |
| 332 | CORE_ADDR *adjusted_insn_addr_end, |
| 333 | char *err); |
| 334 | |
| 335 | /* Return the bytecode operations vector for the current inferior. |
| 336 | Returns NULL if bytecode compilation is not supported. */ |
| 337 | struct emit_ops *(*emit_ops) (void); |
| 338 | |
| 339 | /* Returns true if the target supports disabling randomization. */ |
| 340 | int (*supports_disable_randomization) (void); |
| 341 | |
| 342 | /* Return the minimum length of an instruction that can be safely overwritten |
| 343 | for use as a fast tracepoint. */ |
| 344 | int (*get_min_fast_tracepoint_insn_len) (void); |
| 345 | |
| 346 | /* Read solib info on SVR4 platforms. */ |
| 347 | int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf, |
| 348 | unsigned const char *writebuf, |
| 349 | CORE_ADDR offset, int len); |
| 350 | |
| 351 | /* Return true if target supports debugging agent. */ |
| 352 | int (*supports_agent) (void); |
| 353 | |
| 354 | /* Enable branch tracing for PTID based on CONF and allocate a branch trace |
| 355 | target information struct for reading and for disabling branch trace. */ |
| 356 | struct btrace_target_info *(*enable_btrace) |
| 357 | (ptid_t ptid, const struct btrace_config *conf); |
| 358 | |
| 359 | /* Disable branch tracing. |
| 360 | Returns zero on success, non-zero otherwise. */ |
| 361 | int (*disable_btrace) (struct btrace_target_info *tinfo); |
| 362 | |
| 363 | /* Read branch trace data into buffer. |
| 364 | Return 0 on success; print an error message into BUFFER and return -1, |
| 365 | otherwise. */ |
| 366 | int (*read_btrace) (struct btrace_target_info *, struct buffer *, |
| 367 | enum btrace_read_type type); |
| 368 | |
| 369 | /* Read the branch trace configuration into BUFFER. |
| 370 | Return 0 on success; print an error message into BUFFER and return -1 |
| 371 | otherwise. */ |
| 372 | int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *); |
| 373 | |
| 374 | /* Return true if target supports range stepping. */ |
| 375 | int (*supports_range_stepping) (void); |
| 376 | |
| 377 | /* Return the full absolute name of the executable file that was |
| 378 | run to create the process PID. If the executable file cannot |
| 379 | be determined, NULL is returned. Otherwise, a pointer to a |
| 380 | character string containing the pathname is returned. This |
| 381 | string should be copied into a buffer by the client if the string |
| 382 | will not be immediately used, or if it must persist. */ |
| 383 | char *(*pid_to_exec_file) (int pid); |
| 384 | |
| 385 | /* Multiple-filesystem-aware open. Like open(2), but operating in |
| 386 | the filesystem as it appears to process PID. Systems where all |
| 387 | processes share a common filesystem should set this to NULL. |
| 388 | If NULL, the caller should fall back to open(2). */ |
| 389 | int (*multifs_open) (int pid, const char *filename, |
| 390 | int flags, mode_t mode); |
| 391 | |
| 392 | /* Multiple-filesystem-aware unlink. Like unlink(2), but operates |
| 393 | in the filesystem as it appears to process PID. Systems where |
| 394 | all processes share a common filesystem should set this to NULL. |
| 395 | If NULL, the caller should fall back to unlink(2). */ |
| 396 | int (*multifs_unlink) (int pid, const char *filename); |
| 397 | |
| 398 | /* Multiple-filesystem-aware readlink. Like readlink(2), but |
| 399 | operating in the filesystem as it appears to process PID. |
| 400 | Systems where all processes share a common filesystem should |
| 401 | set this to NULL. If NULL, the caller should fall back to |
| 402 | readlink(2). */ |
| 403 | ssize_t (*multifs_readlink) (int pid, const char *filename, |
| 404 | char *buf, size_t bufsiz); |
| 405 | |
| 406 | /* Return the breakpoint kind for this target based on PC. The PCPTR is |
| 407 | adjusted to the real memory location in case a flag (e.g., the Thumb bit on |
| 408 | ARM) was present in the PC. */ |
| 409 | int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr); |
| 410 | |
| 411 | /* Return the software breakpoint from KIND. KIND can have target |
| 412 | specific meaning like the Z0 kind parameter. |
| 413 | SIZE is set to the software breakpoint's length in memory. */ |
| 414 | const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size); |
| 415 | |
| 416 | /* Return the thread's name, or NULL if the target is unable to determine it. |
| 417 | The returned value must not be freed by the caller. */ |
| 418 | const char *(*thread_name) (ptid_t thread); |
| 419 | |
| 420 | /* Return the breakpoint kind for this target based on the current |
| 421 | processor state (e.g. the current instruction mode on ARM) and the |
| 422 | PC. The PCPTR is adjusted to the real memory location in case a flag |
| 423 | (e.g., the Thumb bit on ARM) is present in the PC. */ |
| 424 | int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr); |
| 425 | |
| 426 | /* Returns true if the target can software single step. */ |
| 427 | int (*supports_software_single_step) (void); |
| 428 | |
| 429 | /* Return 1 if the target supports catch syscall, 0 (or leave the |
| 430 | callback NULL) otherwise. */ |
| 431 | int (*supports_catch_syscall) (void); |
| 432 | |
| 433 | /* Return tdesc index for IPA. */ |
| 434 | int (*get_ipa_tdesc_idx) (void); |
| 435 | |
| 436 | /* Thread ID to (numeric) thread handle: Return true on success and |
| 437 | false for failure. Return pointer to thread handle via HANDLE |
| 438 | and the handle's length via HANDLE_LEN. */ |
| 439 | bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len); |
| 440 | |
| 441 | /* The object that will gradually replace this struct. */ |
| 442 | process_target *pt; |
| 443 | }; |
| 444 | |
| 445 | class process_target |
| 446 | { |
| 447 | public: |
| 448 | |
| 449 | virtual ~process_target () = default; |
| 450 | |
| 451 | /* Start a new process. |
| 452 | |
| 453 | PROGRAM is a path to the program to execute. |
| 454 | PROGRAM_ARGS is a standard NULL-terminated array of arguments, |
| 455 | to be passed to the inferior as ``argv'' (along with PROGRAM). |
| 456 | |
| 457 | Returns the new PID on success, -1 on failure. Registers the new |
| 458 | process with the process list. */ |
| 459 | virtual int create_inferior (const char *program, |
| 460 | const std::vector<char *> &program_args) = 0; |
| 461 | |
| 462 | /* Do additional setup after a new process is created, including |
| 463 | exec-wrapper completion. */ |
| 464 | virtual void post_create_inferior (); |
| 465 | |
| 466 | /* Attach to a running process. |
| 467 | |
| 468 | PID is the process ID to attach to, specified by the user |
| 469 | or a higher layer. |
| 470 | |
| 471 | Returns -1 if attaching is unsupported, 0 on success, and calls |
| 472 | error() otherwise. */ |
| 473 | virtual int attach (unsigned long pid) = 0; |
| 474 | |
| 475 | /* Kill process PROC. Return -1 on failure, and 0 on success. */ |
| 476 | virtual int kill (process_info *proc) = 0; |
| 477 | |
| 478 | /* Detach from process PROC. Return -1 on failure, and 0 on |
| 479 | success. */ |
| 480 | virtual int detach (process_info *proc) = 0; |
| 481 | |
| 482 | /* The inferior process has died. Do what is right. */ |
| 483 | virtual void mourn (process_info *proc) = 0; |
| 484 | |
| 485 | /* Wait for process PID to exit. */ |
| 486 | virtual void join (int pid) = 0; |
| 487 | }; |
| 488 | |
| 489 | extern process_stratum_target *the_target; |
| 490 | |
| 491 | void set_target_ops (process_stratum_target *); |
| 492 | |
| 493 | #define target_create_inferior(program, program_args) \ |
| 494 | the_target->pt->create_inferior (program, program_args) |
| 495 | |
| 496 | #define target_post_create_inferior() \ |
| 497 | the_target->pt->post_create_inferior () |
| 498 | |
| 499 | #define myattach(pid) \ |
| 500 | the_target->pt->attach (pid) |
| 501 | |
| 502 | int kill_inferior (process_info *proc); |
| 503 | |
| 504 | #define target_supports_fork_events() \ |
| 505 | (the_target->supports_fork_events ? \ |
| 506 | (*the_target->supports_fork_events) () : 0) |
| 507 | |
| 508 | #define target_supports_vfork_events() \ |
| 509 | (the_target->supports_vfork_events ? \ |
| 510 | (*the_target->supports_vfork_events) () : 0) |
| 511 | |
| 512 | #define target_supports_exec_events() \ |
| 513 | (the_target->supports_exec_events ? \ |
| 514 | (*the_target->supports_exec_events) () : 0) |
| 515 | |
| 516 | #define target_handle_new_gdb_connection() \ |
| 517 | do \ |
| 518 | { \ |
| 519 | if (the_target->handle_new_gdb_connection != NULL) \ |
| 520 | (*the_target->handle_new_gdb_connection) (); \ |
| 521 | } while (0) |
| 522 | |
| 523 | #define detach_inferior(proc) \ |
| 524 | the_target->pt->detach (proc) |
| 525 | |
| 526 | #define mythread_alive(pid) \ |
| 527 | (*the_target->thread_alive) (pid) |
| 528 | |
| 529 | #define fetch_inferior_registers(regcache, regno) \ |
| 530 | (*the_target->fetch_registers) (regcache, regno) |
| 531 | |
| 532 | #define store_inferior_registers(regcache, regno) \ |
| 533 | (*the_target->store_registers) (regcache, regno) |
| 534 | |
| 535 | #define join_inferior(pid) \ |
| 536 | the_target->pt->join (pid) |
| 537 | |
| 538 | #define target_supports_non_stop() \ |
| 539 | (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0) |
| 540 | |
| 541 | #define target_async(enable) \ |
| 542 | (the_target->async ? (*the_target->async) (enable) : 0) |
| 543 | |
| 544 | #define target_process_qsupported(features, count) \ |
| 545 | do \ |
| 546 | { \ |
| 547 | if (the_target->process_qsupported) \ |
| 548 | the_target->process_qsupported (features, count); \ |
| 549 | } while (0) |
| 550 | |
| 551 | #define target_supports_catch_syscall() \ |
| 552 | (the_target->supports_catch_syscall ? \ |
| 553 | (*the_target->supports_catch_syscall) () : 0) |
| 554 | |
| 555 | #define target_get_ipa_tdesc_idx() \ |
| 556 | (the_target->get_ipa_tdesc_idx \ |
| 557 | ? (*the_target->get_ipa_tdesc_idx) () : 0) |
| 558 | |
| 559 | #define target_supports_tracepoints() \ |
| 560 | (the_target->supports_tracepoints \ |
| 561 | ? (*the_target->supports_tracepoints) () : 0) |
| 562 | |
| 563 | #define target_supports_fast_tracepoints() \ |
| 564 | (the_target->install_fast_tracepoint_jump_pad != NULL) |
| 565 | |
| 566 | #define target_get_min_fast_tracepoint_insn_len() \ |
| 567 | (the_target->get_min_fast_tracepoint_insn_len \ |
| 568 | ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0) |
| 569 | |
| 570 | #define thread_stopped(thread) \ |
| 571 | (*the_target->thread_stopped) (thread) |
| 572 | |
| 573 | #define pause_all(freeze) \ |
| 574 | do \ |
| 575 | { \ |
| 576 | if (the_target->pause_all) \ |
| 577 | (*the_target->pause_all) (freeze); \ |
| 578 | } while (0) |
| 579 | |
| 580 | #define unpause_all(unfreeze) \ |
| 581 | do \ |
| 582 | { \ |
| 583 | if (the_target->unpause_all) \ |
| 584 | (*the_target->unpause_all) (unfreeze); \ |
| 585 | } while (0) |
| 586 | |
| 587 | #define stabilize_threads() \ |
| 588 | do \ |
| 589 | { \ |
| 590 | if (the_target->stabilize_threads) \ |
| 591 | (*the_target->stabilize_threads) (); \ |
| 592 | } while (0) |
| 593 | |
| 594 | #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \ |
| 595 | collector, lockaddr, \ |
| 596 | orig_size, \ |
| 597 | jump_entry, \ |
| 598 | trampoline, trampoline_size, \ |
| 599 | jjump_pad_insn, \ |
| 600 | jjump_pad_insn_size, \ |
| 601 | adjusted_insn_addr, \ |
| 602 | adjusted_insn_addr_end, \ |
| 603 | err) \ |
| 604 | (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \ |
| 605 | collector,lockaddr, \ |
| 606 | orig_size, jump_entry, \ |
| 607 | trampoline, \ |
| 608 | trampoline_size, \ |
| 609 | jjump_pad_insn, \ |
| 610 | jjump_pad_insn_size, \ |
| 611 | adjusted_insn_addr, \ |
| 612 | adjusted_insn_addr_end, \ |
| 613 | err) |
| 614 | |
| 615 | #define target_emit_ops() \ |
| 616 | (the_target->emit_ops ? (*the_target->emit_ops) () : NULL) |
| 617 | |
| 618 | #define target_supports_disable_randomization() \ |
| 619 | (the_target->supports_disable_randomization ? \ |
| 620 | (*the_target->supports_disable_randomization) () : 0) |
| 621 | |
| 622 | #define target_supports_agent() \ |
| 623 | (the_target->supports_agent ? \ |
| 624 | (*the_target->supports_agent) () : 0) |
| 625 | |
| 626 | static inline struct btrace_target_info * |
| 627 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
| 628 | { |
| 629 | if (the_target->enable_btrace == nullptr) |
| 630 | error (_("Target does not support branch tracing.")); |
| 631 | |
| 632 | return (*the_target->enable_btrace) (ptid, conf); |
| 633 | } |
| 634 | |
| 635 | static inline int |
| 636 | target_disable_btrace (struct btrace_target_info *tinfo) |
| 637 | { |
| 638 | if (the_target->disable_btrace == nullptr) |
| 639 | error (_("Target does not support branch tracing.")); |
| 640 | |
| 641 | return (*the_target->disable_btrace) (tinfo); |
| 642 | } |
| 643 | |
| 644 | static inline int |
| 645 | target_read_btrace (struct btrace_target_info *tinfo, |
| 646 | struct buffer *buffer, |
| 647 | enum btrace_read_type type) |
| 648 | { |
| 649 | if (the_target->read_btrace == nullptr) |
| 650 | error (_("Target does not support branch tracing.")); |
| 651 | |
| 652 | return (*the_target->read_btrace) (tinfo, buffer, type); |
| 653 | } |
| 654 | |
| 655 | static inline int |
| 656 | target_read_btrace_conf (struct btrace_target_info *tinfo, |
| 657 | struct buffer *buffer) |
| 658 | { |
| 659 | if (the_target->read_btrace_conf == nullptr) |
| 660 | error (_("Target does not support branch tracing.")); |
| 661 | |
| 662 | return (*the_target->read_btrace_conf) (tinfo, buffer); |
| 663 | } |
| 664 | |
| 665 | #define target_supports_range_stepping() \ |
| 666 | (the_target->supports_range_stepping ? \ |
| 667 | (*the_target->supports_range_stepping) () : 0) |
| 668 | |
| 669 | #define target_supports_stopped_by_sw_breakpoint() \ |
| 670 | (the_target->supports_stopped_by_sw_breakpoint ? \ |
| 671 | (*the_target->supports_stopped_by_sw_breakpoint) () : 0) |
| 672 | |
| 673 | #define target_stopped_by_sw_breakpoint() \ |
| 674 | (the_target->stopped_by_sw_breakpoint ? \ |
| 675 | (*the_target->stopped_by_sw_breakpoint) () : 0) |
| 676 | |
| 677 | #define target_supports_stopped_by_hw_breakpoint() \ |
| 678 | (the_target->supports_stopped_by_hw_breakpoint ? \ |
| 679 | (*the_target->supports_stopped_by_hw_breakpoint) () : 0) |
| 680 | |
| 681 | #define target_supports_hardware_single_step() \ |
| 682 | (the_target->supports_hardware_single_step ? \ |
| 683 | (*the_target->supports_hardware_single_step) () : 0) |
| 684 | |
| 685 | #define target_stopped_by_hw_breakpoint() \ |
| 686 | (the_target->stopped_by_hw_breakpoint ? \ |
| 687 | (*the_target->stopped_by_hw_breakpoint) () : 0) |
| 688 | |
| 689 | #define target_breakpoint_kind_from_pc(pcptr) \ |
| 690 | (the_target->breakpoint_kind_from_pc \ |
| 691 | ? (*the_target->breakpoint_kind_from_pc) (pcptr) \ |
| 692 | : default_breakpoint_kind_from_pc (pcptr)) |
| 693 | |
| 694 | #define target_breakpoint_kind_from_current_state(pcptr) \ |
| 695 | (the_target->breakpoint_kind_from_current_state \ |
| 696 | ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \ |
| 697 | : target_breakpoint_kind_from_pc (pcptr)) |
| 698 | |
| 699 | #define target_supports_software_single_step() \ |
| 700 | (the_target->supports_software_single_step ? \ |
| 701 | (*the_target->supports_software_single_step) () : 0) |
| 702 | |
| 703 | /* Start non-stop mode, returns 0 on success, -1 on failure. */ |
| 704 | |
| 705 | int start_non_stop (int nonstop); |
| 706 | |
| 707 | ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options, |
| 708 | int connected_wait); |
| 709 | |
| 710 | /* Prepare to read or write memory from the inferior process. See the |
| 711 | corresponding process_stratum_target methods for more details. */ |
| 712 | |
| 713 | int prepare_to_access_memory (void); |
| 714 | void done_accessing_memory (void); |
| 715 | |
| 716 | #define target_core_of_thread(ptid) \ |
| 717 | (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \ |
| 718 | : -1) |
| 719 | |
| 720 | #define target_thread_name(ptid) \ |
| 721 | (the_target->thread_name ? (*the_target->thread_name) (ptid) \ |
| 722 | : NULL) |
| 723 | |
| 724 | #define target_thread_handle(ptid, handle, handle_len) \ |
| 725 | (the_target->thread_handle ? (*the_target->thread_handle) \ |
| 726 | (ptid, handle, handle_len) \ |
| 727 | : false) |
| 728 | |
| 729 | int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len); |
| 730 | |
| 731 | int set_desired_thread (); |
| 732 | |
| 733 | const char *target_pid_to_str (ptid_t); |
| 734 | |
| 735 | int target_can_do_hardware_single_step (void); |
| 736 | |
| 737 | int default_breakpoint_kind_from_pc (CORE_ADDR *pcptr); |
| 738 | |
| 739 | #endif /* GDBSERVER_TARGET_H */ |