+
+ /* Read solib info on SVR4 platforms. */
+ int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len);
+
+ /* Return true if target supports debugging agent. */
+ int (*supports_agent) (void);
+
+ /* Enable branch tracing for PTID based on CONF and allocate a branch trace
+ target information struct for reading and for disabling branch trace. */
+ struct btrace_target_info *(*enable_btrace)
+ (ptid_t ptid, const struct btrace_config *conf);
+
+ /* Disable branch tracing.
+ Returns zero on success, non-zero otherwise. */
+ int (*disable_btrace) (struct btrace_target_info *tinfo);
+
+ /* Read branch trace data into buffer.
+ Return 0 on success; print an error message into BUFFER and return -1,
+ otherwise. */
+ int (*read_btrace) (struct btrace_target_info *, struct buffer *,
+ enum btrace_read_type type);
+
+ /* Read the branch trace configuration into BUFFER.
+ Return 0 on success; print an error message into BUFFER and return -1
+ otherwise. */
+ int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
+
+ /* Return true if target supports range stepping. */
+ int (*supports_range_stepping) (void);
+
+ /* Return the full absolute name of the executable file that was
+ run to create the process PID. If the executable file cannot
+ be determined, NULL is returned. Otherwise, a pointer to a
+ character string containing the pathname is returned. This
+ string should be copied into a buffer by the client if the string
+ will not be immediately used, or if it must persist. */
+ char *(*pid_to_exec_file) (int pid);
+
+ /* Multiple-filesystem-aware open. Like open(2), but operating in
+ the filesystem as it appears to process PID. Systems where all
+ processes share a common filesystem should set this to NULL.
+ If NULL, the caller should fall back to open(2). */
+ int (*multifs_open) (int pid, const char *filename,
+ int flags, mode_t mode);
+
+ /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
+ in the filesystem as it appears to process PID. Systems where
+ all processes share a common filesystem should set this to NULL.
+ If NULL, the caller should fall back to unlink(2). */
+ int (*multifs_unlink) (int pid, const char *filename);
+
+ /* Multiple-filesystem-aware readlink. Like readlink(2), but
+ operating in the filesystem as it appears to process PID.
+ Systems where all processes share a common filesystem should
+ set this to NULL. If NULL, the caller should fall back to
+ readlink(2). */
+ ssize_t (*multifs_readlink) (int pid, const char *filename,
+ char *buf, size_t bufsiz);
+
+ /* Return the breakpoint kind for this target based on PC. The PCPTR is
+ adjusted to the real memory location in case a flag (e.g., the Thumb bit on
+ ARM) was present in the PC. */
+ int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
+
+ /* Return the software breakpoint from KIND. KIND can have target
+ specific meaning like the Z0 kind parameter.
+ SIZE is set to the software breakpoint's length in memory. */
+ const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
+
+ /* Return the thread's name, or NULL if the target is unable to determine it.
+ The returned value must not be freed by the caller. */
+ const char *(*thread_name) (ptid_t thread);
+
+ /* Return the breakpoint kind for this target based on the current
+ processor state (e.g. the current instruction mode on ARM) and the
+ PC. The PCPTR is adjusted to the real memory location in case a flag
+ (e.g., the Thumb bit on ARM) is present in the PC. */
+ int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
+
+ /* Returns true if the target can software single step. */
+ int (*supports_software_single_step) (void);
+
+ /* Return 1 if the target supports catch syscall, 0 (or leave the
+ callback NULL) otherwise. */
+ int (*supports_catch_syscall) (void);
+
+ /* Return tdesc index for IPA. */
+ int (*get_ipa_tdesc_idx) (void);
+
+ /* Thread ID to (numeric) thread handle: Return true on success and
+ false for failure. Return pointer to thread handle via HANDLE
+ and the handle's length via HANDLE_LEN. */
+ bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);