/* Target operations for the remote server for GDB.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by MontaVista Software.
#ifndef TARGET_H
#define TARGET_H
+/* Ways to "resume" a thread. */
+
+enum resume_kind
+{
+ /* Thread should continue. */
+ resume_continue,
+
+ /* Thread should single-step. */
+ resume_step,
+
+ /* Thread should be stopped. */
+ resume_stop
+};
+
/* This structure describes how to resume a particular thread (or all
threads) based on the client's request. If thread is -1, then this
entry applies to all threads. These are passed around as an
struct thread_resume
{
- unsigned long thread;
+ ptid_t thread;
- /* If non-zero, we want to single-step. */
- int step;
+ /* How to "resume". */
+ enum resume_kind kind;
- /* If non-zero, send this signal when we resume. */
+ /* If non-zero, send this signal when we resume, or to stop the
+ thread. If stopping a thread, and this is 0, the target should
+ stop the thread however it best decides to (e.g., SIGSTOP on
+ linux; SuspendThread on win32). */
int sig;
};
{
int integer;
enum target_signal sig;
- unsigned long related_pid;
+ ptid_t related_pid;
char *execd_pathname;
}
value;
};
+/* Options that can be passed to target_ops->wait. */
+
+#define TARGET_WNOHANG 1
+
struct target_ops
{
/* Start a new process.
int (*attach) (unsigned long pid);
- /* Kill all inferiors. */
-
- void (*kill) (void);
+ /* Kill inferior PID. Return -1 on failure, and 0 on success. */
- /* Detach from all inferiors.
- Return -1 on failure, and 0 on success. */
+ int (*kill) (int pid);
- int (*detach) (void);
+ /* Detach from inferior PID. Return -1 on failure, and 0 on
+ success. */
- /* Wait for inferiors to end. */
+ int (*detach) (int pid);
- void (*join) (void);
+ /* Wait for inferior PID to exit. */
+ void (*join) (int pid);
/* Return 1 iff the thread with process ID PID is alive. */
- int (*thread_alive) (unsigned long pid);
+ int (*thread_alive) (ptid_t pid);
/* Resume the inferior process. */
void (*resume) (struct thread_resume *resume_info, size_t n);
/* Wait for the inferior process or thread to change state. Store
- status through argument pointer STATUS. */
+ status through argument pointer STATUS.
- unsigned long (*wait) (struct target_waitstatus *status);
+ PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
+ wait for any thread of process pid to do something. Return ptid
+ of child, or -1 in case of error; store status through argument
+ pointer STATUS. OPTIONS is a bit set of options defined as
+ TARGET_W* above. If options contains TARGET_WNOHANG and there's
+ no child stop to report, return is
+ null_ptid/TARGET_WAITKIND_IGNORE. */
+
+ ptid_t (*wait) (ptid_t ptid, struct target_waitstatus *status, int options);
/* Fetch registers from the inferior process.
int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
unsigned int len);
- /* Insert and remove a hardware watchpoint.
+ /* Insert and remove a break or watchpoint.
Returns 0 on success, -1 on failure and 1 on unsupported.
The type is coded as follows:
- 2 = write watchpoint
- 3 = read watchpoint
- 4 = access watchpoint
- */
+ '0' - software-breakpoint
+ '1' - hardware-breakpoint
+ '2' - write watchpoint
+ '3' - read watchpoint
+ '4' - access watchpoint */
- int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
- int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
+ int (*insert_point) (char type, CORE_ADDR addr, int len);
+ int (*remove_point) (char type, CORE_ADDR addr, int len);
/* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
int (*qxfer_siginfo) (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
CORE_ADDR offset, int len);
+
+ int (*supports_non_stop) (void);
+
+ /* Enables async target events. Returns the previous enable
+ state. */
+ int (*async) (int enable);
+
+ /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
+ success, -1 otherwise. */
+ int (*start_non_stop) (int);
+
+ /* Returns true if the target supports multi-process debugging. */
+ int (*supports_multi_process) (void);
+
+ /* If not NULL, target-specific routine to process monitor command.
+ Returns 1 if handled, or 0 to perform default processing. */
+ int (*handle_monitor_command) (char *);
};
extern struct target_ops *the_target;
#define myattach(pid) \
(*the_target->attach) (pid)
-#define kill_inferior() \
- (*the_target->kill) ()
+#define kill_inferior(pid) \
+ (*the_target->kill) (pid)
-#define detach_inferior() \
- (*the_target->detach) ()
+#define detach_inferior(pid) \
+ (*the_target->detach) (pid)
#define mythread_alive(pid) \
(*the_target->thread_alive) (pid)
#define store_inferior_registers(regno) \
(*the_target->store_registers) (regno)
-#define join_inferior() \
- (*the_target->join) ()
+#define join_inferior(pid) \
+ (*the_target->join) (pid)
+
+#define target_supports_non_stop() \
+ (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
-unsigned long mywait (struct target_waitstatus *ourstatus, int connected_wait);
+#define target_async(enable) \
+ (the_target->async ? (*the_target->async) (enable) : 0)
+
+#define target_supports_multi_process() \
+ (the_target->supports_multi_process ? \
+ (*the_target->supports_multi_process) () : 0)
+
+/* Start non-stop mode, returns 0 on success, -1 on failure. */
+
+int start_non_stop (int nonstop);
+
+ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
+ int connected_wait);
int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
void set_desired_inferior (int id);
+const char *target_pid_to_str (ptid_t);
+
#endif /* TARGET_H */
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