struct lwp_info;
-struct linux_target_ops
+/* Target ops definitions for a Linux target. */
+
+class linux_process_target : public process_stratum_target
{
- /* Architecture-specific setup. */
- void (*arch_setup) (void);
+public:
+
+ int create_inferior (const char *program,
+ const std::vector<char *> &program_args) override;
+
+ void post_create_inferior () override;
+
+ int attach (unsigned long pid) override;
+
+ int kill (process_info *proc) override;
+
+ int detach (process_info *proc) override;
+
+ void mourn (process_info *proc) override;
+
+ void join (int pid) override;
+
+ bool thread_alive (ptid_t pid) override;
+
+ void resume (thread_resume *resume_info, size_t n) override;
+
+ ptid_t wait (ptid_t ptid, target_waitstatus *status,
+ int options) override;
+
+ void fetch_registers (regcache *regcache, int regno) override;
+
+ void store_registers (regcache *regcache, int regno) override;
+
+ int prepare_to_access_memory () override;
+
+ void done_accessing_memory () override;
+
+ int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
+ int len) override;
+
+ int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
+ int len) override;
+
+ void look_up_symbols () override;
+
+ void request_interrupt () override;
+
+ bool supports_read_auxv () override;
+
+ int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
+ unsigned int len) override;
+
+ int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp) override;
+
+ int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp) override;
+
+ bool stopped_by_sw_breakpoint () override;
+
+ bool supports_stopped_by_sw_breakpoint () override;
+
+ bool stopped_by_hw_breakpoint () override;
+
+ bool supports_stopped_by_hw_breakpoint () override;
+
+ bool supports_hardware_single_step () override;
+
+ bool stopped_by_watchpoint () override;
+
+ CORE_ADDR stopped_data_address () override;
+
+ bool supports_read_offsets () override;
+
+ int read_offsets (CORE_ADDR *text, CORE_ADDR *data) override;
+
+ bool supports_get_tls_address () override;
+
+ int get_tls_address (thread_info *thread, CORE_ADDR offset,
+ CORE_ADDR load_module, CORE_ADDR *address) override;
+
+ bool supports_qxfer_osdata () override;
+
+ int qxfer_osdata (const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len) override;
+
+ bool supports_qxfer_siginfo () override;
+
+ int qxfer_siginfo (const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len) override;
+
+ bool supports_non_stop () override;
+
+ bool async (bool enable) override;
+
+ int start_non_stop (bool enable) override;
+
+ bool supports_multi_process () override;
+
+ bool supports_fork_events () override;
+
+ bool supports_vfork_events () override;
+
+ bool supports_exec_events () override;
+
+ void handle_new_gdb_connection () override;
+
+ int handle_monitor_command (char *mon) override;
- const struct regs_info *(*regs_info) (void);
- int (*cannot_fetch_register) (int);
+ int core_of_thread (ptid_t ptid) override;
- /* Returns 0 if we can store the register, 1 if we can not
- store the register, and 2 if failure to store the register
- is acceptable. */
- int (*cannot_store_register) (int);
+#if defined PT_GETDSBT || defined PTRACE_GETFDPIC
+ bool supports_read_loadmap () override;
+
+ int read_loadmap (const char *annex, CORE_ADDR offset,
+ unsigned char *myaddr, unsigned int len) override;
+#endif
+
+ CORE_ADDR read_pc (regcache *regcache) override;
+
+ void write_pc (regcache *regcache, CORE_ADDR pc) override;
+
+ bool supports_thread_stopped () override;
+
+ bool thread_stopped (thread_info *thread) override;
+
+ void pause_all (bool freeze) override;
+
+ void unpause_all (bool unfreeze) override;
+
+ void stabilize_threads () override;
+
+ bool supports_disable_randomization () override;
+
+ bool supports_qxfer_libraries_svr4 () override;
+
+ int qxfer_libraries_svr4 (const char *annex,
+ unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len) override;
+
+ bool supports_agent () override;
+
+#ifdef HAVE_LINUX_BTRACE
+ btrace_target_info *enable_btrace (ptid_t ptid,
+ const btrace_config *conf) override;
+
+ int disable_btrace (btrace_target_info *tinfo) override;
+
+ int read_btrace (btrace_target_info *tinfo, buffer *buf,
+ enum btrace_read_type type) override;
+
+ int read_btrace_conf (const btrace_target_info *tinfo,
+ buffer *buf) override;
+#endif
+
+ bool supports_range_stepping () override;
+
+ bool supports_pid_to_exec_file () override;
+
+ char *pid_to_exec_file (int pid) override;
+
+ bool supports_multifs () override;
+
+ int multifs_open (int pid, const char *filename, int flags,
+ mode_t mode) override;
+
+ int multifs_unlink (int pid, const char *filename) override;
+
+ ssize_t multifs_readlink (int pid, const char *filename, char *buf,
+ size_t bufsiz) override;
+
+ const char *thread_name (ptid_t thread) override;
+
+#if USE_THREAD_DB
+ bool thread_handle (ptid_t ptid, gdb_byte **handle,
+ int *handle_len) override;
+#endif
+
+ bool supports_catch_syscall () override;
+
+ /* Return the information to access registers. This has public
+ visibility because proc-service uses it. */
+ virtual const regs_info *get_regs_info () = 0;
+
+private:
+
+ /* Handle a GNU/Linux extended wait response. If we see a clone,
+ fork, or vfork event, we need to add the new LWP to our list
+ (and return 0 so as not to report the trap to higher layers).
+ If we see an exec event, we will modify ORIG_EVENT_LWP to point
+ to a new LWP representing the new program. */
+ int handle_extended_wait (lwp_info **orig_event_lwp, int wstat);
+
+ /* Do low-level handling of the event, and check if we should go on
+ and pass it to caller code. Return the affected lwp if we are, or
+ NULL otherwise. */
+ lwp_info *filter_event (int lwpid, int wstat);
+
+ /* Wait for an event from child(ren) WAIT_PTID, and return any that
+ match FILTER_PTID (leaving others pending). The PTIDs can be:
+ minus_one_ptid, to specify any child; a pid PTID, specifying all
+ lwps of a thread group; or a PTID representing a single lwp. Store
+ the stop status through the status pointer WSTAT. OPTIONS is
+ passed to the waitpid call. Return 0 if no event was found and
+ OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
+ was found. Return the PID of the stopped child otherwise. */
+ int wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
+ int *wstatp, int options);
+
+ /* Wait for an event from child(ren) PTID. PTIDs can be:
+ minus_one_ptid, to specify any child; a pid PTID, specifying all
+ lwps of a thread group; or a PTID representing a single lwp. Store
+ the stop status through the status pointer WSTAT. OPTIONS is
+ passed to the waitpid call. Return 0 if no event was found and
+ OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
+ was found. Return the PID of the stopped child otherwise. */
+ int wait_for_event (ptid_t ptid, int *wstatp, int options);
+
+ /* Wait for all children to stop for the SIGSTOPs we just queued. */
+ void wait_for_sigstop ();
+
+ /* Wait for process, returns status. */
+ ptid_t wait_1 (ptid_t ptid, target_waitstatus *ourstatus,
+ int target_options);
+
+ /* Stop all lwps that aren't stopped yet, except EXCEPT, if not NULL.
+ If SUSPEND, then also increase the suspend count of every LWP,
+ except EXCEPT. */
+ void stop_all_lwps (int suspend, lwp_info *except);
+
+ /* Stopped LWPs that the client wanted to be running, that don't have
+ pending statuses, are set to run again, except for EXCEPT, if not
+ NULL. This undoes a stop_all_lwps call. */
+ void unstop_all_lwps (int unsuspend, lwp_info *except);
+
+ /* Start a step-over operation on LWP. When LWP stopped at a
+ breakpoint, to make progress, we need to remove the breakpoint out
+ of the way. If we let other threads run while we do that, they may
+ pass by the breakpoint location and miss hitting it. To avoid
+ that, a step-over momentarily stops all threads while LWP is
+ single-stepped by either hardware or software while the breakpoint
+ is temporarily uninserted from the inferior. When the single-step
+ finishes, we reinsert the breakpoint, and let all threads that are
+ supposed to be running, run again. */
+ void start_step_over (lwp_info *lwp);
+
+ /* If there's a step over in progress, wait until all threads stop
+ (that is, until the stepping thread finishes its step), and
+ unsuspend all lwps. The stepping thread ends with its status
+ pending, which is processed later when we get back to processing
+ events. */
+ void complete_ongoing_step_over ();
+
+ /* Finish a step-over. Reinsert the breakpoint we had uninserted in
+ start_step_over, if still there, and delete any single-step
+ breakpoints we've set, on non hardware single-step targets.
+ Return true if step over finished. */
+ bool finish_step_over (lwp_info *lwp);
+
+ /* When we finish a step-over, set threads running again. If there's
+ another thread that may need a step-over, now's the time to start
+ it. Eventually, we'll move all threads past their breakpoints. */
+ void proceed_all_lwps ();
+
+ /* The reason we resume in the caller, is because we want to be able
+ to pass lwp->status_pending as WSTAT, and we need to clear
+ status_pending_p before resuming, otherwise, resume_one_lwp
+ refuses to resume. */
+ bool maybe_move_out_of_jump_pad (lwp_info *lwp, int *wstat);
+
+ /* Move THREAD out of the jump pad. */
+ void move_out_of_jump_pad (thread_info *thread);
+
+ /* Call low_arch_setup on THREAD. */
+ void arch_setup_thread (thread_info *thread);
+
+#ifdef HAVE_LINUX_USRREGS
+ /* Fetch one register. */
+ void fetch_register (const usrregs_info *usrregs, regcache *regcache,
+ int regno);
+
+ /* Store one register. */
+ void store_register (const usrregs_info *usrregs, regcache *regcache,
+ int regno);
+#endif
+
+ /* Fetch all registers, or just one, from the child process.
+ If REGNO is -1, do this for all registers, skipping any that are
+ assumed to have been retrieved by regsets_fetch_inferior_registers,
+ unless ALL is non-zero.
+ Otherwise, REGNO specifies which register (so we can save time). */
+ void usr_fetch_inferior_registers (const regs_info *regs_info,
+ regcache *regcache, int regno, int all);
+
+ /* Store our register values back into the inferior.
+ If REGNO is -1, do this for all registers, skipping any that are
+ assumed to have been saved by regsets_store_inferior_registers,
+ unless ALL is non-zero.
+ Otherwise, REGNO specifies which register (so we can save time). */
+ void usr_store_inferior_registers (const regs_info *regs_info,
+ regcache *regcache, int regno, int all);
+
+ /* Return the PC as read from the regcache of LWP, without any
+ adjustment. */
+ CORE_ADDR get_pc (lwp_info *lwp);
+
+ /* Called when the LWP stopped for a signal/trap. If it stopped for a
+ trap check what caused it (breakpoint, watchpoint, trace, etc.),
+ and save the result in the LWP's stop_reason field. If it stopped
+ for a breakpoint, decrement the PC if necessary on the lwp's
+ architecture. Returns true if we now have the LWP's stop PC. */
+ bool save_stop_reason (lwp_info *lwp);
+
+ /* Resume execution of LWP. If STEP is nonzero, single-step it. If
+ SIGNAL is nonzero, give it that signal. */
+ void resume_one_lwp_throw (lwp_info *lwp, int step, int signal,
+ siginfo_t *info);
+
+ /* Like resume_one_lwp_throw, but no error is thrown if the LWP
+ disappears while we try to resume it. */
+ void resume_one_lwp (lwp_info *lwp, int step, int signal, siginfo_t *info);
+
+ /* This function is called once per thread. We check the thread's
+ last resume request, which will tell us whether to resume, step, or
+ leave the thread stopped. Any signal the client requested to be
+ delivered has already been enqueued at this point.
+
+ If any thread that GDB wants running is stopped at an internal
+ breakpoint that needs stepping over, we start a step-over operation
+ on that particular thread, and leave all others stopped. */
+ void proceed_one_lwp (thread_info *thread, lwp_info *except);
+
+ /* This function is called once per thread. We check the thread's
+ resume request, which will tell us whether to resume, step, or
+ leave the thread stopped; and what signal, if any, it should be
+ sent.
+
+ For threads which we aren't explicitly told otherwise, we preserve
+ the stepping flag; this is used for stepping over gdbserver-placed
+ breakpoints.
+
+ If pending_flags was set in any thread, we queue any needed
+ signals, since we won't actually resume. We already have a pending
+ event to report, so we don't need to preserve any step requests;
+ they should be re-issued if necessary. */
+ void resume_one_thread (thread_info *thread, bool leave_all_stopped);
+
+ /* Return true if this lwp has an interesting status pending. */
+ bool status_pending_p_callback (thread_info *thread, ptid_t ptid);
+
+ /* Resume LWPs that are currently stopped without any pending status
+ to report, but are resumed from the core's perspective. */
+ void resume_stopped_resumed_lwps (thread_info *thread);
+
+ /* Unsuspend THREAD, except EXCEPT, and proceed. */
+ void unsuspend_and_proceed_one_lwp (thread_info *thread, lwp_info *except);
+
+ /* Return true if this lwp still has an interesting status pending.
+ If not (e.g., it had stopped for a breakpoint that is gone), return
+ false. */
+ bool thread_still_has_status_pending (thread_info *thread);
+
+ /* Return true if this lwp is to-be-resumed and has an interesting
+ status pending. */
+ bool resume_status_pending (thread_info *thread);
+
+ /* Return true if this lwp that GDB wants running is stopped at an
+ internal breakpoint that we need to step over. It assumes that
+ any required STOP_PC adjustment has already been propagated to
+ the inferior's regcache. */
+ bool thread_needs_step_over (thread_info *thread);
+
+ /* Single step via hardware or software single step.
+ Return 1 if hardware single stepping, 0 if software single stepping
+ or can't single step. */
+ int single_step (lwp_info* lwp);
+
+ /* Return true if THREAD is doing hardware single step. */
+ bool maybe_hw_step (thread_info *thread);
+
+ /* Install breakpoints for software single stepping. */
+ void install_software_single_step_breakpoints (lwp_info *lwp);
+
+ /* Fetch the possibly triggered data watchpoint info and store it in
+ CHILD.
+
+ On some archs, like x86, that use debug registers to set
+ watchpoints, it's possible that the way to know which watched
+ address trapped, is to check the register that is used to select
+ which address to watch. Problem is, between setting the watchpoint
+ and reading back which data address trapped, the user may change
+ the set of watchpoints, and, as a consequence, GDB changes the
+ debug registers in the inferior. To avoid reading back a stale
+ stopped-data-address when that happens, we cache in LP the fact
+ that a watchpoint trapped, and the corresponding data address, as
+ soon as we see CHILD stop with a SIGTRAP. If GDB changes the debug
+ registers meanwhile, we have the cached data we can rely on. */
+ bool check_stopped_by_watchpoint (lwp_info *child);
+
+ /* Convert a native/host siginfo object, into/from the siginfo in the
+ layout of the inferiors' architecture. */
+ void siginfo_fixup (siginfo_t *siginfo, gdb_byte *inf_siginfo,
+ int direction);
+
+ /* Add a process to the common process list, and set its private
+ data. */
+ process_info *add_linux_process (int pid, int attached);
+
+ /* Add a new thread. */
+ lwp_info *add_lwp (ptid_t ptid);
+
+ /* Delete a thread. */
+ void delete_lwp (lwp_info *lwp);
+
+public: /* Make this public because it's used from outside. */
+ /* Attach to an inferior process. Returns 0 on success, ERRNO on
+ error. */
+ int attach_lwp (ptid_t ptid);
+
+private: /* Back to private. */
+ /* Detach from LWP. */
+ void detach_one_lwp (lwp_info *lwp);
+
+ /* Detect zombie thread group leaders, and "exit" them. We can't
+ reap their exits until all other threads in the group have
+ exited. */
+ void check_zombie_leaders ();
+
+ /* Convenience function that is called when the kernel reports an exit
+ event. This decides whether to report the event to GDB as a
+ process exit event, a thread exit event, or to suppress the
+ event. */
+ ptid_t filter_exit_event (lwp_info *event_child,
+ target_waitstatus *ourstatus);
+
+ /* Returns true if THREAD is stopped in a jump pad, and we can't
+ move it out, because we need to report the stop event to GDB. For
+ example, if the user puts a breakpoint in the jump pad, it's
+ because she wants to debug it. */
+ bool stuck_in_jump_pad (thread_info *thread);
+
+ /* Convenience wrapper. Returns information about LWP's fast tracepoint
+ collection status. */
+ fast_tpoint_collect_result linux_fast_tracepoint_collecting
+ (lwp_info *lwp, fast_tpoint_collect_status *status);
+
+ /* This function should only be called if LWP got a SYSCALL_SIGTRAP.
+ Fill *SYSNO with the syscall nr trapped. */
+ void get_syscall_trapinfo (lwp_info *lwp, int *sysno);
+
+ /* Returns true if GDB is interested in the event_child syscall.
+ Only to be called when stopped reason is SYSCALL_SIGTRAP. */
+ bool gdb_catch_this_syscall (lwp_info *event_child);
+
+protected:
+ /* The architecture-specific "low" methods are listed below. */
+
+ /* Architecture-specific setup for the current thread. */
+ virtual void low_arch_setup () = 0;
+
+ /* Return false if we can fetch/store the register, true if we cannot
+ fetch/store the register. */
+ virtual bool low_cannot_fetch_register (int regno) = 0;
+
+ virtual bool low_cannot_store_register (int regno) = 0;
/* Hook to fetch a register in some non-standard way. Used for
example by backends that have read-only registers with hardcoded
values (e.g., IA64's gr0/fr0/fr1). Returns true if register
REGNO was supplied, false if not, and we should fallback to the
standard ptrace methods. */
- int (*fetch_register) (struct regcache *regcache, int regno);
+ virtual bool low_fetch_register (regcache *regcache, int regno);
- CORE_ADDR (*get_pc) (struct regcache *regcache);
- void (*set_pc) (struct regcache *regcache, CORE_ADDR newpc);
+ /* Return true if breakpoints are supported. Such targets must
+ implement the GET_PC and SET_PC methods. */
+ virtual bool low_supports_breakpoints ();
- /* See target.h for details. */
- int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
+ virtual CORE_ADDR low_get_pc (regcache *regcache);
- /* See target.h for details. */
- const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
+ virtual void low_set_pc (regcache *regcache, CORE_ADDR newpc);
- /* Find the next possible PCs after the current instruction executes. */
- std::vector<CORE_ADDR> (*get_next_pcs) (struct regcache *regcache);
+ /* Find the next possible PCs after the current instruction executes.
+ Targets that override this method should also override
+ 'supports_software_single_step' to return true. */
+ virtual std::vector<CORE_ADDR> low_get_next_pcs (regcache *regcache);
- int decr_pc_after_break;
- int (*breakpoint_at) (CORE_ADDR pc);
+ /* Return true if there is a breakpoint at PC. */
+ virtual bool low_breakpoint_at (CORE_ADDR pc) = 0;
/* Breakpoint and watchpoint related functions. See target.h for
comments. */
- int (*supports_z_point_type) (char z_type);
- int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr,
- int size, struct raw_breakpoint *bp);
- int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr,
- int size, struct raw_breakpoint *bp);
+ virtual int low_insert_point (raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp);
+
+ virtual int low_remove_point (raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp);
+
+ virtual bool low_stopped_by_watchpoint ();
- int (*stopped_by_watchpoint) (void);
- CORE_ADDR (*stopped_data_address) (void);
+ virtual CORE_ADDR low_stopped_data_address ();
/* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
for registers smaller than an xfer unit). */
- void (*collect_ptrace_register) (struct regcache *regcache,
- int regno, char *buf);
- void (*supply_ptrace_register) (struct regcache *regcache,
- int regno, const char *buf);
+ virtual void low_collect_ptrace_register (regcache *regcache, int regno,
+ char *buf);
+
+ virtual void low_supply_ptrace_register (regcache *regcache, int regno,
+ const char *buf);
/* Hook to convert from target format to ptrace format and back.
Returns true if any conversion was done; false otherwise.
If DIRECTION is 1, then copy from INF to NATIVE.
If DIRECTION is 0, copy from NATIVE to INF. */
- int (*siginfo_fixup) (siginfo_t *native, gdb_byte *inf, int direction);
+ virtual bool low_siginfo_fixup (siginfo_t *native, gdb_byte *inf,
+ int direction);
/* Hook to call when a new process is created or attached to.
If extra per-process architecture-specific data is needed,
allocate it here. */
- struct arch_process_info * (*new_process) (void);
+ virtual arch_process_info *low_new_process ();
/* Hook to call when a process is being deleted. If extra per-process
architecture-specific data is needed, delete it here. */
- void (*delete_process) (struct arch_process_info *info);
+ virtual void low_delete_process (arch_process_info *info);
/* Hook to call when a new thread is detected.
If extra per-thread architecture-specific data is needed,
allocate it here. */
- void (*new_thread) (struct lwp_info *);
+ virtual void low_new_thread (lwp_info *);
/* Hook to call when a thread is being deleted. If extra per-thread
architecture-specific data is needed, delete it here. */
- void (*delete_thread) (struct arch_lwp_info *);
+ virtual void low_delete_thread (arch_lwp_info *);
/* Hook to call, if any, when a new fork is attached. */
- void (*new_fork) (struct process_info *parent, struct process_info *child);
+ virtual void low_new_fork (process_info *parent, process_info *child);
/* Hook to call prior to resuming a thread. */
- void (*prepare_to_resume) (struct lwp_info *);
-
- /* Hook to support target specific qSupported. */
- void (*process_qsupported) (char **, int count);
-
- /* Returns true if the low target supports tracepoints. */
- int (*supports_tracepoints) (void);
+ virtual void low_prepare_to_resume (lwp_info *lwp);
/* Fill ADDRP with the thread area address of LWPID. Returns 0 on
success, -1 on failure. */
- int (*get_thread_area) (int lwpid, CORE_ADDR *addrp);
-
- /* Install a fast tracepoint jump pad. See target.h for
- comments. */
- int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr,
- CORE_ADDR collector,
- CORE_ADDR lockaddr,
- ULONGEST orig_size,
- CORE_ADDR *jump_entry,
- CORE_ADDR *trampoline,
- ULONGEST *trampoline_size,
- unsigned char *jjump_pad_insn,
- ULONGEST *jjump_pad_insn_size,
- CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end,
- char *err);
-
- /* Return the bytecode operations vector for the current inferior.
- Returns NULL if bytecode compilation is not supported. */
- struct emit_ops *(*emit_ops) (void);
-
- /* Return the minimum length of an instruction that can be safely overwritten
- for use as a fast tracepoint. */
- int (*get_min_fast_tracepoint_insn_len) (void);
+ virtual int low_get_thread_area (int lwpid, CORE_ADDR *addrp);
/* Returns true if the low target supports range stepping. */
- int (*supports_range_stepping) (void);
-
- /* See target.h. */
- int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
+ virtual bool low_supports_range_stepping ();
- /* See target.h. */
- int (*supports_hardware_single_step) (void);
+ /* Return true if the target supports catch syscall. Such targets
+ override the low_get_syscall_trapinfo method below. */
+ virtual bool low_supports_catch_syscall ();
/* Fill *SYSNO with the syscall nr trapped. Only to be called when
inferior is stopped due to SYSCALL_SIGTRAP. */
- void (*get_syscall_trapinfo) (struct regcache *regcache, int *sysno);
+ virtual void low_get_syscall_trapinfo (regcache *regcache, int *sysno);
- /* See target.h. */
- int (*get_ipa_tdesc_idx) (void);
+ /* How many bytes the PC should be decremented after a break. */
+ virtual int low_decr_pc_after_break ();
};
-extern struct linux_target_ops the_low_target;
-
-/* Target ops definitions for a Linux target. */
-
-class linux_process_target : public process_target
-{
-public:
-
- int create_inferior (const char *program,
- const std::vector<char *> &program_args) override;
-
- void post_create_inferior () override;
-
- int attach (unsigned long pid) override;
-};
+extern linux_process_target *the_linux_target;
#define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))
#define get_lwp_thread(lwp) ((lwp)->thread)
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