Initial creation of sourceware repository

1 files changed, 0 insertions, 1264 deletions

diff --git a/gdb/target.h b/gdb/target.h
deleted file mode 100644
index f44d3e4..0000000
--- a/gdb/target.h
+++ /dev/null
@@ -1,1264 +0,0 @@
-/* Interface between GDB and target environments, including files and processes
-   Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
-   Contributed by Cygnus Support.  Written by John Gilmore.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-#if !defined (TARGET_H)
-#define TARGET_H
-
-/* This include file defines the interface between the main part
-   of the debugger, and the part which is target-specific, or
-   specific to the communications interface between us and the
-   target.
-
-   A TARGET is an interface between the debugger and a particular 
-   kind of file or process.  Targets can be STACKED in STRATA, 
-   so that more than one target can potentially respond to a request.
-   In particular, memory accesses will walk down the stack of targets
-   until they find a target that is interested in handling that particular
-   address.  STRATA are artificial boundaries on the stack, within
-   which particular kinds of targets live.  Strata exist so that
-   people don't get confused by pushing e.g. a process target and then
-   a file target, and wondering why they can't see the current values
-   of variables any more (the file target is handling them and they
-   never get to the process target).  So when you push a file target,
-   it goes into the file stratum, which is always below the process
-   stratum.  */
-
-#include "bfd.h"
-#include "symtab.h"
-
-enum strata {
-	dummy_stratum,		/* The lowest of the low */
-	file_stratum,		/* Executable files, etc */
-	core_stratum,		/* Core dump files */
-	download_stratum,	/* Downloading of remote targets */
-	process_stratum		/* Executing processes */
-};
-
-enum thread_control_capabilities {
-	tc_none = 0, 		/* Default: can't control thread execution. */
-	tc_schedlock = 1,	/* Can lock the thread scheduler. */
-	tc_switch = 2, 		/* Can switch the running thread on demand. */
-};
-
-/* Stuff for target_wait.  */
-
-/* Generally, what has the program done?  */
-enum target_waitkind {
-  /* The program has exited.  The exit status is in value.integer.  */
-  TARGET_WAITKIND_EXITED,
-
-  /* The program has stopped with a signal.  Which signal is in value.sig.  */
-  TARGET_WAITKIND_STOPPED,
-
-  /* The program has terminated with a signal.  Which signal is in
-     value.sig.  */
-  TARGET_WAITKIND_SIGNALLED,
-
-  /* The program is letting us know that it dynamically loaded something
-     (e.g. it called load(2) on AIX).  */
-  TARGET_WAITKIND_LOADED,
-
-  /* The program has forked.  A "related" process' ID is in value.related_pid.
-     I.e., if the child forks, value.related_pid is the parent's ID.
-     */
-  TARGET_WAITKIND_FORKED,
-
-  /* The program has vforked.  A "related" process's ID is in value.related_pid.
-     */
-  TARGET_WAITKIND_VFORKED,
-
-  /* The program has exec'ed a new executable file.  The new file's pathname
-     is pointed to by value.execd_pathname.
-     */
-  TARGET_WAITKIND_EXECD,
-
-  /* The program has entered or returned from a system call.  On HP-UX, this
-     is used in the hardware watchpoint implementation.  The syscall's unique
-     integer ID number is in value.syscall_id;
-     */
-  TARGET_WAITKIND_SYSCALL_ENTRY,
-  TARGET_WAITKIND_SYSCALL_RETURN,
-
-  /* Nothing happened, but we stopped anyway.  This perhaps should be handled
-     within target_wait, but I'm not sure target_wait should be resuming the
-     inferior.  */
-  TARGET_WAITKIND_SPURIOUS
-  };
-
-/* The numbering of these signals is chosen to match traditional unix
-   signals (insofar as various unices use the same numbers, anyway).
-   It is also the numbering of the GDB remote protocol.  Other remote
-   protocols, if they use a different numbering, should make sure to
-   translate appropriately.  */
-
-/* This is based strongly on Unix/POSIX signals for several reasons:
-   (1) This set of signals represents a widely-accepted attempt to
-   represent events of this sort in a portable fashion, (2) we want a
-   signal to make it from wait to child_wait to the user intact, (3) many
-   remote protocols use a similar encoding.  However, it is
-   recognized that this set of signals has limitations (such as not
-   distinguishing between various kinds of SIGSEGV, or not
-   distinguishing hitting a breakpoint from finishing a single step).
-   So in the future we may get around this either by adding additional
-   signals for breakpoint, single-step, etc., or by adding signal
-   codes; the latter seems more in the spirit of what BSD, System V,
-   etc. are doing to address these issues.  */
-
-/* For an explanation of what each signal means, see
-   target_signal_to_string.  */
-
-enum target_signal {
-  /* Used some places (e.g. stop_signal) to record the concept that
-     there is no signal.  */
-  TARGET_SIGNAL_0 = 0,
-  TARGET_SIGNAL_FIRST = 0,
-  TARGET_SIGNAL_HUP = 1,
-  TARGET_SIGNAL_INT = 2,
-  TARGET_SIGNAL_QUIT = 3,
-  TARGET_SIGNAL_ILL = 4,
-  TARGET_SIGNAL_TRAP = 5,
-  TARGET_SIGNAL_ABRT = 6,
-  TARGET_SIGNAL_EMT = 7,
-  TARGET_SIGNAL_FPE = 8,
-  TARGET_SIGNAL_KILL = 9,
-  TARGET_SIGNAL_BUS = 10,
-  TARGET_SIGNAL_SEGV = 11,
-  TARGET_SIGNAL_SYS = 12,
-  TARGET_SIGNAL_PIPE = 13,
-  TARGET_SIGNAL_ALRM = 14,
-  TARGET_SIGNAL_TERM = 15,
-  TARGET_SIGNAL_URG = 16,
-  TARGET_SIGNAL_STOP = 17,
-  TARGET_SIGNAL_TSTP = 18,
-  TARGET_SIGNAL_CONT = 19,
-  TARGET_SIGNAL_CHLD = 20,
-  TARGET_SIGNAL_TTIN = 21,
-  TARGET_SIGNAL_TTOU = 22,
-  TARGET_SIGNAL_IO = 23,
-  TARGET_SIGNAL_XCPU = 24,
-  TARGET_SIGNAL_XFSZ = 25,
-  TARGET_SIGNAL_VTALRM = 26,
-  TARGET_SIGNAL_PROF = 27,
-  TARGET_SIGNAL_WINCH = 28,
-  TARGET_SIGNAL_LOST = 29,
-  TARGET_SIGNAL_USR1 = 30,
-  TARGET_SIGNAL_USR2 = 31,
-  TARGET_SIGNAL_PWR = 32,
-  /* Similar to SIGIO.  Perhaps they should have the same number.  */
-  TARGET_SIGNAL_POLL = 33,
-  TARGET_SIGNAL_WIND = 34,
-  TARGET_SIGNAL_PHONE = 35,
-  TARGET_SIGNAL_WAITING = 36,
-  TARGET_SIGNAL_LWP = 37,
-  TARGET_SIGNAL_DANGER = 38,
-  TARGET_SIGNAL_GRANT = 39,
-  TARGET_SIGNAL_RETRACT = 40,
-  TARGET_SIGNAL_MSG = 41,
-  TARGET_SIGNAL_SOUND = 42,
-  TARGET_SIGNAL_SAK = 43,
-  TARGET_SIGNAL_PRIO = 44,
-  TARGET_SIGNAL_REALTIME_33 = 45,
-  TARGET_SIGNAL_REALTIME_34 = 46,
-  TARGET_SIGNAL_REALTIME_35 = 47,
-  TARGET_SIGNAL_REALTIME_36 = 48,
-  TARGET_SIGNAL_REALTIME_37 = 49,
-  TARGET_SIGNAL_REALTIME_38 = 50,
-  TARGET_SIGNAL_REALTIME_39 = 51,
-  TARGET_SIGNAL_REALTIME_40 = 52,
-  TARGET_SIGNAL_REALTIME_41 = 53,
-  TARGET_SIGNAL_REALTIME_42 = 54,
-  TARGET_SIGNAL_REALTIME_43 = 55,
-  TARGET_SIGNAL_REALTIME_44 = 56,
-  TARGET_SIGNAL_REALTIME_45 = 57,
-  TARGET_SIGNAL_REALTIME_46 = 58,
-  TARGET_SIGNAL_REALTIME_47 = 59,
-  TARGET_SIGNAL_REALTIME_48 = 60,
-  TARGET_SIGNAL_REALTIME_49 = 61,
-  TARGET_SIGNAL_REALTIME_50 = 62,
-  TARGET_SIGNAL_REALTIME_51 = 63,
-  TARGET_SIGNAL_REALTIME_52 = 64,
-  TARGET_SIGNAL_REALTIME_53 = 65,
-  TARGET_SIGNAL_REALTIME_54 = 66,
-  TARGET_SIGNAL_REALTIME_55 = 67,
-  TARGET_SIGNAL_REALTIME_56 = 68,
-  TARGET_SIGNAL_REALTIME_57 = 69,
-  TARGET_SIGNAL_REALTIME_58 = 70,
-  TARGET_SIGNAL_REALTIME_59 = 71,
-  TARGET_SIGNAL_REALTIME_60 = 72,
-  TARGET_SIGNAL_REALTIME_61 = 73,
-  TARGET_SIGNAL_REALTIME_62 = 74,
-  TARGET_SIGNAL_REALTIME_63 = 75,
-#if defined(MACH) || defined(__MACH__)
-  /* Mach exceptions */
-  TARGET_EXC_BAD_ACCESS = 76,
-  TARGET_EXC_BAD_INSTRUCTION = 77,
-  TARGET_EXC_ARITHMETIC = 78,
-  TARGET_EXC_EMULATION = 79,
-  TARGET_EXC_SOFTWARE = 80,
-  TARGET_EXC_BREAKPOINT = 81,
-#endif
-  /* Some signal we don't know about.  */
-  TARGET_SIGNAL_UNKNOWN,
-
-  /* Use whatever signal we use when one is not specifically specified
-     (for passing to proceed and so on).  */
-  TARGET_SIGNAL_DEFAULT,
-
-  /* Last and unused enum value, for sizing arrays, etc.  */
-  TARGET_SIGNAL_LAST
-};
-
-struct target_waitstatus {
-  enum target_waitkind kind;
-
-  /* Forked child pid, execd pathname, exit status or signal number.  */
-  union {
-    int integer;
-    enum target_signal sig;
-    int  related_pid;
-    char *  execd_pathname;
-    int  syscall_id;
-  } value;
-};
-
-/* Return the string for a signal.  */
-extern char *target_signal_to_string PARAMS ((enum target_signal));
-
-/* Return the name (SIGHUP, etc.) for a signal.  */
-extern char *target_signal_to_name PARAMS ((enum target_signal));
-
-/* Given a name (SIGHUP, etc.), return its signal.  */
-enum target_signal target_signal_from_name PARAMS ((char *));
-
-
-/* If certain kinds of activity happen, target_wait should perform
-   callbacks.  */
-/* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible
-   on TARGET_ACTIVITY_FD.   */
-extern int target_activity_fd;
-/* Returns zero to leave the inferior alone, one to interrupt it.  */
-extern int (*target_activity_function) PARAMS ((void));
-
-struct target_ops
-{
-  char	       *to_shortname;	/* Name this target type */
-  char	       *to_longname;	/* Name for printing */
-  char 	       *to_doc;	        /* Documentation.  Does not include trailing
-				   newline, and starts with a one-line descrip-
-				   tion (probably similar to to_longname). */
-  void 	      (*to_open) PARAMS ((char *, int));
-  void 	      (*to_close) PARAMS ((int));
-  void 	      (*to_attach) PARAMS ((char *, int));
-  void        (*to_post_attach) PARAMS ((int));
-  void 	      (*to_require_attach) PARAMS ((char *, int));
-  void 	      (*to_detach) PARAMS ((char *, int));
-  void 	      (*to_require_detach) PARAMS ((int, char *, int));
-  void 	      (*to_resume) PARAMS ((int, int, enum target_signal));
-  int  	      (*to_wait) PARAMS ((int, struct target_waitstatus *));
-  void        (*to_post_wait) PARAMS ((int, int));
-  void 	      (*to_fetch_registers) PARAMS ((int));
-  void 	      (*to_store_registers) PARAMS ((int));
-  void 	      (*to_prepare_to_store) PARAMS ((void));
-
-  /* Transfer LEN bytes of memory between GDB address MYADDR and
-     target address MEMADDR.  If WRITE, transfer them to the target, else
-     transfer them from the target.  TARGET is the target from which we
-     get this function.
-
-     Return value, N, is one of the following:
-
-     0 means that we can't handle this.  If errno has been set, it is the
-     error which prevented us from doing it (FIXME: What about bfd_error?).
-
-     positive (call it N) means that we have transferred N bytes
-     starting at MEMADDR.  We might be able to handle more bytes
-     beyond this length, but no promises.
-
-     negative (call its absolute value N) means that we cannot
-     transfer right at MEMADDR, but we could transfer at least
-     something at MEMADDR + N.  */
-
-  int  	      (*to_xfer_memory) PARAMS ((CORE_ADDR memaddr, char *myaddr,
-					 int len, int write,
-					 struct target_ops * target));
-
-#if 0
-  /* Enable this after 4.12.  */
-
-  /* Search target memory.  Start at STARTADDR and take LEN bytes of
-     target memory, and them with MASK, and compare to DATA.  If they
-     match, set *ADDR_FOUND to the address we found it at, store the data
-     we found at LEN bytes starting at DATA_FOUND, and return.  If
-     not, add INCREMENT to the search address and keep trying until
-     the search address is outside of the range [LORANGE,HIRANGE).
-
-     If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and return.  */
-  void (*to_search) PARAMS ((int len, char *data, char *mask,
-			     CORE_ADDR startaddr, int increment,
-			     CORE_ADDR lorange, CORE_ADDR hirange,
-			     CORE_ADDR *addr_found, char *data_found));
-
-#define	target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found)	\
-  (*current_target.to_search) (len, data, mask, startaddr, increment, \
-				lorange, hirange, addr_found, data_found)
-#endif /* 0 */
-
-  void 	      (*to_files_info) PARAMS ((struct target_ops *));
-  int  	      (*to_insert_breakpoint) PARAMS ((CORE_ADDR, char *));
-  int 	      (*to_remove_breakpoint) PARAMS ((CORE_ADDR, char *));
-  void 	      (*to_terminal_init) PARAMS ((void));
-  void 	      (*to_terminal_inferior) PARAMS ((void));
-  void 	      (*to_terminal_ours_for_output) PARAMS ((void));
-  void 	      (*to_terminal_ours) PARAMS ((void));
-  void 	      (*to_terminal_info) PARAMS ((char *, int));
-  void 	      (*to_kill) PARAMS ((void));
-  void 	      (*to_load) PARAMS ((char *, int));
-  int 	      (*to_lookup_symbol) PARAMS ((char *, CORE_ADDR *));
-  void 	      (*to_create_inferior) PARAMS ((char *, char *, char **));
-  void        (*to_post_startup_inferior) PARAMS ((int));
-  void        (*to_acknowledge_created_inferior) PARAMS ((int));
-  void        (*to_clone_and_follow_inferior) PARAMS ((int, int *));
-  void        (*to_post_follow_inferior_by_clone) PARAMS ((void));
-  int         (*to_insert_fork_catchpoint) PARAMS ((int));
-  int         (*to_remove_fork_catchpoint) PARAMS ((int));
-  int         (*to_insert_vfork_catchpoint) PARAMS ((int));
-  int         (*to_remove_vfork_catchpoint) PARAMS ((int));
-  int         (*to_has_forked) PARAMS ((int, int *));
-  int         (*to_has_vforked) PARAMS ((int, int *));
-  int         (*to_can_follow_vfork_prior_to_exec) PARAMS ((void));
-  void        (*to_post_follow_vfork) PARAMS ((int, int, int, int));
-  int         (*to_insert_exec_catchpoint) PARAMS ((int));
-  int         (*to_remove_exec_catchpoint) PARAMS ((int));
-  int         (*to_has_execd) PARAMS ((int, char **));
-  int         (*to_reported_exec_events_per_exec_call) PARAMS ((void));
-  int         (*to_has_syscall_event) PARAMS ((int, enum target_waitkind *, int *));
-  int         (*to_has_exited) PARAMS ((int, int, int *));
-  void 	      (*to_mourn_inferior) PARAMS ((void));
-  int	      (*to_can_run) PARAMS ((void));
-  void	      (*to_notice_signals) PARAMS ((int pid));
-  int	      (*to_thread_alive) PARAMS ((int pid));
-  void	      (*to_stop) PARAMS ((void));
-  int 	      (*to_query) PARAMS ((char, char *, char *, int *));
-  struct symtab_and_line * (*to_enable_exception_callback) PARAMS ((enum exception_event_kind, int));
-  struct exception_event_record * (*to_get_current_exception_event) PARAMS ((void));
-  char *      (*to_pid_to_exec_file) PARAMS ((int pid));
-  char *      (*to_core_file_to_sym_file) PARAMS ((char *));
-  enum strata   to_stratum;
-  struct target_ops
-		*DONT_USE;	/* formerly to_next */
-  int		to_has_all_memory;
-  int		to_has_memory;
-  int		to_has_stack;
-  int		to_has_registers;
-  int		to_has_execution;
-  int		to_has_thread_control;	/* control thread execution */
-  struct section_table
-    	       *to_sections;
-  struct section_table
-	       *to_sections_end;
-  int		to_magic;
-  /* Need sub-structure for target machine related rather than comm related? */
-};
-
-/* Magic number for checking ops size.  If a struct doesn't end with this
-   number, somebody changed the declaration but didn't change all the
-   places that initialize one.  */
-
-#define	OPS_MAGIC	3840
-
-/* The ops structure for our "current" target process.  This should
-   never be NULL.  If there is no target, it points to the dummy_target.  */
-
-extern struct target_ops	current_target;
-
-/* An item on the target stack.  */
-
-struct target_stack_item
-{
-  struct target_stack_item *next;
-  struct target_ops *target_ops;
-};
-
-/* The target stack.  */
-
-extern struct target_stack_item *target_stack;
-
-/* Define easy words for doing these operations on our current target.  */
-
-#define	target_shortname	(current_target.to_shortname)
-#define	target_longname		(current_target.to_longname)
-
-/* The open routine takes the rest of the parameters from the command,
-   and (if successful) pushes a new target onto the stack.
-   Targets should supply this routine, if only to provide an error message.  */
-#define	target_open(name, from_tty)	\
-	(*current_target.to_open) (name, from_tty)
-
-/* Does whatever cleanup is required for a target that we are no longer
-   going to be calling.  Argument says whether we are quitting gdb and
-   should not get hung in case of errors, or whether we want a clean
-   termination even if it takes a while.  This routine is automatically
-   always called just before a routine is popped off the target stack.
-   Closing file descriptors and freeing memory are typical things it should
-   do.  */
-
-#define	target_close(quitting)	\
-	(*current_target.to_close) (quitting)
-
-/* Attaches to a process on the target side.  Arguments are as passed
-   to the `attach' command by the user.  This routine can be called
-   when the target is not on the target-stack, if the target_can_run
-   routine returns 1; in that case, it must push itself onto the stack.  
-   Upon exit, the target should be ready for normal operations, and
-   should be ready to deliver the status of the process immediately 
-   (without waiting) to an upcoming target_wait call.  */
-
-#define	target_attach(args, from_tty)	\
-	(*current_target.to_attach) (args, from_tty)
-
-/* The target_attach operation places a process under debugger control,
-   and stops the process.
-
-   This operation provides a target-specific hook that allows the
-   necessary bookkeeping to be performed after an attach completes.
-   */
-#define target_post_attach(pid) \
-        (*current_target.to_post_attach) (pid)
-
-/* Attaches to a process on the target side, if not already attached.
-   (If already attached, takes no action.)
-
-   This operation can be used to follow the child process of a fork.
-   On some targets, such child processes of an original inferior process
-   are automatically under debugger control, and thus do not require an
-   actual attach operation.  */
-
-#define	target_require_attach(args, from_tty)	\
-	(*current_target.to_require_attach) (args, from_tty)
-
-/* Takes a program previously attached to and detaches it.
-   The program may resume execution (some targets do, some don't) and will
-   no longer stop on signals, etc.  We better not have left any breakpoints
-   in the program or it'll die when it hits one.  ARGS is arguments
-   typed by the user (e.g. a signal to send the process).  FROM_TTY
-   says whether to be verbose or not.  */
-
-extern void
-target_detach PARAMS ((char *, int));
-
-/* Detaches from a process on the target side, if not already dettached.
-   (If already detached, takes no action.)
-
-   This operation can be used to follow the parent process of a fork.
-   On some targets, such child processes of an original inferior process
-   are automatically under debugger control, and thus do require an actual
-   detach operation.
-
-   PID is the process id of the child to detach from.
-   ARGS is arguments typed by the user (e.g. a signal to send the process).
-   FROM_TTY says whether to be verbose or not.  */
-
-#define target_require_detach(pid, args, from_tty) \
-	(*current_target.to_require_detach) (pid, args, from_tty)
-
-/* Resume execution of the target process PID.  STEP says whether to
-   single-step or to run free; SIGGNAL is the signal to be given to
-   the target, or TARGET_SIGNAL_0 for no signal.  The caller may not
-   pass TARGET_SIGNAL_DEFAULT.  */
-
-#define	target_resume(pid, step, siggnal)	\
-	(*current_target.to_resume) (pid, step, siggnal)
-
-/* Wait for process pid to do something.  Pid = -1 to wait for any pid
-   to do something.  Return pid of child, or -1 in case of error;
-   store status through argument pointer STATUS.  Note that it is
-   *not* OK to return_to_top_level out of target_wait without popping
-   the debugging target from the stack; GDB isn't prepared to get back
-   to the prompt with a debugging target but without the frame cache,
-   stop_pc, etc., set up.  */
-
-#define	target_wait(pid, status)		\
-	(*current_target.to_wait) (pid, status)
-
-/* The target_wait operation waits for a process event to occur, and
-   thereby stop the process.
-
-   On some targets, certain events may happen in sequences.  gdb's
-   correct response to any single event of such a sequence may require
-   knowledge of what earlier events in the sequence have been seen.
-
-   This operation provides a target-specific hook that allows the
-   necessary bookkeeping to be performed to track such sequences.
-   */
-
-#define target_post_wait(pid, status) \
-        (*current_target.to_post_wait) (pid, status)
-
-/* Fetch register REGNO, or all regs if regno == -1.  No result.  */
-
-#define	target_fetch_registers(regno)	\
-	(*current_target.to_fetch_registers) (regno)
-
-/* Store at least register REGNO, or all regs if REGNO == -1.
-   It can store as many registers as it wants to, so target_prepare_to_store
-   must have been previously called.  Calls error() if there are problems.  */
-
-#define	target_store_registers(regs)	\
-	(*current_target.to_store_registers) (regs)
-
-/* Get ready to modify the registers array.  On machines which store
-   individual registers, this doesn't need to do anything.  On machines
-   which store all the registers in one fell swoop, this makes sure
-   that REGISTERS contains all the registers from the program being
-   debugged.  */
-
-#define	target_prepare_to_store()	\
-	(*current_target.to_prepare_to_store) ()
-
-extern int target_read_string PARAMS ((CORE_ADDR, char **, int, int *));
-
-extern int
-target_read_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
-
-extern int
-target_read_memory_section PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
-				    asection *bfd_section));
-
-extern int
-target_read_memory_partial PARAMS ((CORE_ADDR, char *, int, int *));
-
-extern int
-target_write_memory PARAMS ((CORE_ADDR, char *, int));
-
-extern int
-xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
-
-extern int
-child_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
-
-extern char *
-child_pid_to_exec_file PARAMS ((int));
-
-extern char *
-child_core_file_to_sym_file PARAMS ((char *));
-
-#if defined(CHILD_POST_ATTACH)
-extern void
-child_post_attach PARAMS ((int));
-#endif
-
-extern void
-child_post_wait PARAMS ((int, int));
-
-extern void
-child_post_startup_inferior PARAMS ((int));
-
-extern void
-child_acknowledge_created_inferior PARAMS ((int));
-
-extern void
-child_clone_and_follow_inferior PARAMS ((int, int *));
-
-extern void
-child_post_follow_inferior_by_clone PARAMS ((void));
-
-extern int
-child_insert_fork_catchpoint PARAMS ((int));
-
-extern int
-child_remove_fork_catchpoint PARAMS ((int));
-
-extern int
-child_insert_vfork_catchpoint PARAMS ((int));
-
-extern int
-child_remove_vfork_catchpoint PARAMS ((int));
-
-extern int
-child_has_forked PARAMS ((int, int *));
-
-extern int
-child_has_vforked PARAMS ((int, int *));
-
-extern void
-child_acknowledge_created_inferior PARAMS ((int));
-
-extern int
-child_can_follow_vfork_prior_to_exec PARAMS ((void));
-
-extern void
-child_post_follow_vfork PARAMS ((int, int, int, int));
-
-extern int
-child_insert_exec_catchpoint PARAMS ((int));
-
-extern int
-child_remove_exec_catchpoint PARAMS ((int));
-
-extern int
-child_has_execd PARAMS ((int, char **));
-
-extern int
-child_reported_exec_events_per_exec_call PARAMS ((void));
-
-extern int
-child_has_syscall_event PARAMS ((int, enum target_waitkind *, int *));
-
-extern int
-child_has_exited PARAMS ((int, int, int *));
-
-extern int
-child_thread_alive PARAMS ((int));
-
-/* From exec.c */
-
-extern void
-print_section_info PARAMS ((struct target_ops *, bfd *));
-
-/* Print a line about the current target.  */
-
-#define	target_files_info()	\
-	(*current_target.to_files_info) (&current_target)
-
-/* Insert a breakpoint at address ADDR in the target machine.
-   SAVE is a pointer to memory allocated for saving the
-   target contents.  It is guaranteed by the caller to be long enough
-   to save "sizeof BREAKPOINT" bytes.  Result is 0 for success, or
-   an errno value.  */
-
-#define	target_insert_breakpoint(addr, save)	\
-	(*current_target.to_insert_breakpoint) (addr, save)
-
-/* Remove a breakpoint at address ADDR in the target machine.
-   SAVE is a pointer to the same save area 
-   that was previously passed to target_insert_breakpoint.  
-   Result is 0 for success, or an errno value.  */
-
-#define	target_remove_breakpoint(addr, save)	\
-	(*current_target.to_remove_breakpoint) (addr, save)
-
-/* Initialize the terminal settings we record for the inferior,
-   before we actually run the inferior.  */
-
-#define target_terminal_init() \
-	(*current_target.to_terminal_init) ()
-
-/* Put the inferior's terminal settings into effect.
-   This is preparation for starting or resuming the inferior.  */
-
-#define target_terminal_inferior() \
-	(*current_target.to_terminal_inferior) ()
-
-/* Put some of our terminal settings into effect,
-   enough to get proper results from our output,
-   but do not change into or out of RAW mode
-   so that no input is discarded.
-
-   After doing this, either terminal_ours or terminal_inferior
-   should be called to get back to a normal state of affairs.  */
-
-#define target_terminal_ours_for_output() \
-	(*current_target.to_terminal_ours_for_output) ()
-
-/* Put our terminal settings into effect.
-   First record the inferior's terminal settings
-   so they can be restored properly later.  */
-
-#define target_terminal_ours() \
-	(*current_target.to_terminal_ours) ()
-
-/* Print useful information about our terminal status, if such a thing
-   exists.  */
-
-#define target_terminal_info(arg, from_tty) \
-	(*current_target.to_terminal_info) (arg, from_tty)
-
-/* Kill the inferior process.   Make it go away.  */
-
-#define target_kill() \
-	(*current_target.to_kill) ()
-
-/* Load an executable file into the target process.  This is expected to
-   not only bring new code into the target process, but also to update
-   GDB's symbol tables to match.  */
-
-#define target_load(arg, from_tty) \
-	(*current_target.to_load) (arg, from_tty)
-
-/* Look up a symbol in the target's symbol table.  NAME is the symbol
-   name.  ADDRP is a CORE_ADDR * pointing to where the value of the symbol
-   should be returned.  The result is 0 if successful, nonzero if the
-   symbol does not exist in the target environment.  This function should
-   not call error() if communication with the target is interrupted, since
-   it is called from symbol reading, but should return nonzero, possibly
-   doing a complain().  */
-
-#define target_lookup_symbol(name, addrp) 	\
-  (*current_target.to_lookup_symbol) (name, addrp)
-
-/* Start an inferior process and set inferior_pid to its pid.
-   EXEC_FILE is the file to run.
-   ALLARGS is a string containing the arguments to the program.
-   ENV is the environment vector to pass.  Errors reported with error().
-   On VxWorks and various standalone systems, we ignore exec_file.  */
- 
-#define	target_create_inferior(exec_file, args, env)	\
-	(*current_target.to_create_inferior) (exec_file, args, env)
-
-
-/* Some targets (such as ttrace-based HPUX) don't allow us to request
-   notification of inferior events such as fork and vork immediately
-   after the inferior is created.  (This because of how gdb gets an
-   inferior created via invoking a shell to do it.  In such a scenario,
-   if the shell init file has commands in it, the shell will fork and
-   exec for each of those commands, and we will see each such fork
-   event.  Very bad.)
-   
-   Such targets will supply an appropriate definition for this function.
-   */
-#define target_post_startup_inferior(pid) \
-        (*current_target.to_post_startup_inferior) (pid)
-
-/* On some targets, the sequence of starting up an inferior requires
-   some synchronization between gdb and the new inferior process, PID.
-   */
-#define target_acknowledge_created_inferior(pid) \
-        (*current_target.to_acknowledge_created_inferior) (pid)
-
-/* An inferior process has been created via a fork() or similar
-   system call.  This function will clone the debugger, then ensure
-   that CHILD_PID is attached to by that debugger.
-
-   FOLLOWED_CHILD is set TRUE on return *for the clone debugger only*,
-   and FALSE otherwise.  (The original and clone debuggers can use this
-   to determine which they are, if need be.)
-
-   (This is not a terribly useful feature without a GUI to prevent
-   the two debuggers from competing for shell input.)
-   */
-#define target_clone_and_follow_inferior(child_pid,followed_child) \
-        (*current_target.to_clone_and_follow_inferior) (child_pid, followed_child)
-
-/* This operation is intended to be used as the last in a sequence of
-   steps taken when following both parent and child of a fork.  This
-   is used by a clone of the debugger, which will follow the child.
-
-   The original debugger has detached from this process, and the
-   clone has attached to it.
-
-   On some targets, this requires a bit of cleanup to make it work
-   correctly.
-   */
-#define target_post_follow_inferior_by_clone() \
-        (*current_target.to_post_follow_inferior_by_clone) ()
-
-/* On some targets, we can catch an inferior fork or vfork event when it
-   occurs.  These functions insert/remove an already-created catchpoint for
-   such events.
-   */
-#define target_insert_fork_catchpoint(pid) \
-        (*current_target.to_insert_fork_catchpoint) (pid)
-
-#define target_remove_fork_catchpoint(pid) \
-        (*current_target.to_remove_fork_catchpoint) (pid)
-
-#define target_insert_vfork_catchpoint(pid) \
-        (*current_target.to_insert_vfork_catchpoint) (pid)
-
-#define target_remove_vfork_catchpoint(pid) \
-        (*current_target.to_remove_vfork_catchpoint) (pid)
-
-/* Returns TRUE if PID has invoked the fork() system call.  And,
-   also sets CHILD_PID to the process id of the other ("child")
-   inferior process that was created by that call.
-   */
-#define target_has_forked(pid,child_pid) \
-        (*current_target.to_has_forked) (pid,child_pid)
-
-/* Returns TRUE if PID has invoked the vfork() system call.  And,
-   also sets CHILD_PID to the process id of the other ("child")
-   inferior process that was created by that call.
-   */
-#define target_has_vforked(pid,child_pid) \
-        (*current_target.to_has_vforked) (pid,child_pid)
-
-/* Some platforms (such as pre-10.20 HP-UX) don't allow us to do
-   anything to a vforked child before it subsequently calls exec().
-   On such platforms, we say that the debugger cannot "follow" the
-   child until it has vforked.
-
-   This function should be defined to return 1 by those targets
-   which can allow the debugger to immediately follow a vforked
-   child, and 0 if they cannot.
-   */
-#define target_can_follow_vfork_prior_to_exec() \
-        (*current_target.to_can_follow_vfork_prior_to_exec) ()
-
-/* An inferior process has been created via a vfork() system call.
-   The debugger has followed the parent, the child, or both.  The
-   process of setting up for that follow may have required some
-   target-specific trickery to track the sequence of reported events.
-   If so, this function should be defined by those targets that
-   require the debugger to perform cleanup or initialization after
-   the vfork follow.
-   */
-#define target_post_follow_vfork(parent_pid,followed_parent,child_pid,followed_child) \
-        (*current_target.to_post_follow_vfork) (parent_pid,followed_parent,child_pid,followed_child)
-
-/* On some targets, we can catch an inferior exec event when it
-   occurs.  These functions insert/remove an already-created catchpoint
-   for such events.
-   */
-#define target_insert_exec_catchpoint(pid) \
-        (*current_target.to_insert_exec_catchpoint) (pid)
- 
-#define target_remove_exec_catchpoint(pid) \
-        (*current_target.to_remove_exec_catchpoint) (pid)
-
-/* Returns TRUE if PID has invoked a flavor of the exec() system call.
-   And, also sets EXECD_PATHNAME to the pathname of the executable file
-   that was passed to exec(), and is now being executed.
-   */
-#define target_has_execd(pid,execd_pathname) \
-        (*current_target.to_has_execd) (pid,execd_pathname)
-
-/* Returns the number of exec events that are reported when a process
-   invokes a flavor of the exec() system call on this target, if exec
-   events are being reported.
-   */
-#define target_reported_exec_events_per_exec_call() \
-        (*current_target.to_reported_exec_events_per_exec_call) ()
-
-/* Returns TRUE if PID has reported a syscall event.  And, also sets
-   KIND to the appropriate TARGET_WAITKIND_, and sets SYSCALL_ID to
-   the unique integer ID of the syscall.
-   */
-#define target_has_syscall_event(pid,kind,syscall_id) \
-  (*current_target.to_has_syscall_event) (pid,kind,syscall_id)
-
-/* Returns TRUE if PID has exited.  And, also sets EXIT_STATUS to the
-   exit code of PID, if any.
-   */
-#define target_has_exited(pid,wait_status,exit_status) \
-        (*current_target.to_has_exited) (pid,wait_status,exit_status)
-
-/* The debugger has completed a blocking wait() call.  There is now
-   some process event that must be processed.  This function should
-   be defined by those targets that require the debugger to perform
-   cleanup or internal state changes in response to the process event.
-   */
-
-/* The inferior process has died.  Do what is right.  */
-
-#define	target_mourn_inferior()	\
-	(*current_target.to_mourn_inferior) ()
-
-/* Does target have enough data to do a run or attach command? */
-
-#define target_can_run(t) \
-  	((t)->to_can_run) ()
-
-/* post process changes to signal handling in the inferior.  */
-
-#define target_notice_signals(pid) \
-  	(*current_target.to_notice_signals) (pid)
-
-/* Check to see if a thread is still alive.  */
-
-#define target_thread_alive(pid) \
-	(*current_target.to_thread_alive) (pid)
-
-/* Make target stop in a continuable fashion.  (For instance, under Unix, this
-   should act like SIGSTOP).  This function is normally used by GUIs to
-   implement a stop button.  */
-
-#define target_stop current_target.to_stop
-
-/* Queries the target side for some information.  The first argument is a
-   letter specifying the type of the query, which is used to determine who
-   should process it.  The second argument is a string that specifies which 
-   information is desired and the third is a buffer that carries back the 
-   response from the target side. The fourth parameter is the size of the
-   output buffer supplied. */
- 
-#define	target_query(query_type, query, resp_buffer, bufffer_size)	\
-	(*current_target.to_query) (query_type, query, resp_buffer, bufffer_size)
-
-/* Get the symbol information for a breakpointable routine called when
-   an exception event occurs. 
-   Intended mainly for C++, and for those
-   platforms/implementations where such a callback mechanism is available,
-   e.g. HP-UX with ANSI C++ (aCC).  Some compilers (e.g. g++) support
-   different mechanisms for debugging exceptions. */
-
-#define target_enable_exception_callback(kind, enable) \
-        (*current_target.to_enable_exception_callback) (kind, enable)
-
-/* Get the current exception event kind -- throw or catch, etc. */
-   
-#define target_get_current_exception_event() \
-        (*current_target.to_get_current_exception_event) ()
-
-/* Pointer to next target in the chain, e.g. a core file and an exec file.  */
-
-#define	target_next \
-	(current_target.to_next)
-
-/* Does the target include all of memory, or only part of it?  This
-   determines whether we look up the target chain for other parts of
-   memory if this target can't satisfy a request.  */
-
-#define	target_has_all_memory	\
-	(current_target.to_has_all_memory)
-
-/* Does the target include memory?  (Dummy targets don't.)  */
-
-#define	target_has_memory	\
-	(current_target.to_has_memory)
-
-/* Does the target have a stack?  (Exec files don't, VxWorks doesn't, until
-   we start a process.)  */
-   
-#define	target_has_stack	\
-	(current_target.to_has_stack)
-
-/* Does the target have registers?  (Exec files don't.)  */
-
-#define	target_has_registers	\
-	(current_target.to_has_registers)
-
-/* Does the target have execution?  Can we make it jump (through
-   hoops), or pop its stack a few times?  FIXME: If this is to work that
-   way, it needs to check whether an inferior actually exists.
-   remote-udi.c and probably other targets can be the current target
-   when the inferior doesn't actually exist at the moment.  Right now
-   this just tells us whether this target is *capable* of execution.  */
-
-#define	target_has_execution	\
-	(current_target.to_has_execution)
-
-/* Can the target support the debugger control of thread execution?
-   a) Can it lock the thread scheduler?
-   b) Can it switch the currently running thread?  */
-
-#define target_can_lock_scheduler \
- 	(current_target.to_has_thread_control & tc_schedlock)
-
-#define target_can_switch_threads \
- 	(current_target.to_has_thread_control & tc_switch)
-
-extern void target_link PARAMS ((char *, CORE_ADDR *));
-
-/* Converts a process id to a string.  Usually, the string just contains
-   `process xyz', but on some systems it may contain
-   `process xyz thread abc'.  */
-
-#ifndef target_pid_to_str
-#define target_pid_to_str(PID) \
-	normal_pid_to_str (PID)
-extern char *normal_pid_to_str PARAMS ((int pid));
-#endif
-
-#ifndef target_tid_to_str
-#define target_tid_to_str(PID) \
-        normal_pid_to_str (PID)
-extern char *normal_pid_to_str PARAMS ((int pid));
-#endif
- 
-
-#ifndef target_new_objfile
-#define target_new_objfile(OBJFILE)
-#endif
-
-#ifndef target_pid_or_tid_to_str
-#define target_pid_or_tid_to_str(ID) \
-	normal_pid_to_str (ID)
-#endif
-
-/* Attempts to find the pathname of the executable file
-   that was run to create a specified process.
-
-   The process PID must be stopped when this operation is used.
-   
-   If the executable file cannot be determined, NULL is returned.
-
-   Else, 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.
-   */
-
-#define target_pid_to_exec_file(pid) \
-	(current_target.to_pid_to_exec_file) (pid)
-
-/* Hook to call target-dependant code after reading in a new symbol table. */
-
-#ifndef TARGET_SYMFILE_POSTREAD
-#define TARGET_SYMFILE_POSTREAD(OBJFILE)
-#endif
-
-/* Hook to call target dependant code just after inferior target process has
-   started.  */
-
-#ifndef TARGET_CREATE_INFERIOR_HOOK
-#define TARGET_CREATE_INFERIOR_HOOK(PID)
-#endif
-
-/* Hardware watchpoint interfaces.  */
-
-/* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
-   write).  */
-
-#ifndef STOPPED_BY_WATCHPOINT
-#define STOPPED_BY_WATCHPOINT(w) 0
-#endif
-
-/* HP-UX supplies these operations, which respectively disable and enable
-   the memory page-protections that are used to implement hardware watchpoints
-   on that platform.  See wait_for_inferior's use of these.
-   */
-#if !defined(TARGET_DISABLE_HW_WATCHPOINTS)
-#define TARGET_DISABLE_HW_WATCHPOINTS(pid)
-#endif
-
-#if !defined(TARGET_ENABLE_HW_WATCHPOINTS)
-#define TARGET_ENABLE_HW_WATCHPOINTS(pid)
-#endif
-
-/* Provide defaults for systems that don't support hardware watchpoints. */
-
-#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
-
-/* Returns non-zero if we can set a hardware watchpoint of type TYPE.  TYPE is
-   one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
-   bp_hardware_breakpoint.  CNT is the number of such watchpoints used so far
-   (including this one?).  OTHERTYPE is who knows what...  */
-
-#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0
-
-#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
-#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \
-        (LONGEST)(byte_count) <= REGISTER_SIZE
-#endif
-
-/* However, some addresses may not be profitable to use hardware to watch,
-   or may be difficult to understand when the addressed object is out of
-   scope, and hence should be unwatched.  On some targets, this may have
-   severe performance penalties, such that we might as well use regular
-   watchpoints, and save (possibly precious) hardware watchpoints for other
-   locations.
-   */
-#if !defined(TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT)
-#define TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT(pid,start,len) 0
-#endif
-
-
-/* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.  TYPE is 0
-   for write, 1 for read, and 2 for read/write accesses.  Returns 0 for
-   success, non-zero for failure.  */
-
-#define target_remove_watchpoint(ADDR,LEN,TYPE) -1
-#define target_insert_watchpoint(ADDR,LEN,TYPE) -1
-
-#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
-
-#ifndef target_insert_hw_breakpoint
-#define target_remove_hw_breakpoint(ADDR,SHADOW) -1
-#define target_insert_hw_breakpoint(ADDR,SHADOW) -1
-#endif
-
-#ifndef target_stopped_data_address
-#define target_stopped_data_address() 0
-#endif
-
-/* If defined, then we need to decr pc by this much after a hardware break-
-   point.  Presumably this overrides DECR_PC_AFTER_BREAK...  */
-
-#ifndef DECR_PC_AFTER_HW_BREAK
-#define DECR_PC_AFTER_HW_BREAK 0
-#endif
-
-/* Sometimes gdb may pick up what appears to be a valid target address
-   from a minimal symbol, but the value really means, essentially,
-   "This is an index into a table which is populated when the inferior
-   is run.  Therefore, do not attempt to use this as a PC."
-   */
-#if !defined(PC_REQUIRES_RUN_BEFORE_USE)
-#define PC_REQUIRES_RUN_BEFORE_USE(pc) (0)
-#endif
-
-/* This will only be defined by a target that supports catching vfork events,
-   such as HP-UX.
-
-   On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked
-   child process after it has exec'd, causes the parent process to resume as
-   well.  To prevent the parent from running spontaneously, such targets should
-   define this to a function that prevents that from happening.
-   */
-#if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED)
-#define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0)
-#endif
-
-/* This will only be defined by a target that supports catching vfork events,
-   such as HP-UX.
-
-   On some targets (such as HP-UX 10.20 and earlier), a newly vforked child
-   process must be resumed when it delivers its exec event, before the parent
-   vfork event will be delivered to us.
-   */
-#if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK)
-#define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0)
-#endif
-
-/* Routines for maintenance of the target structures...
-
-   add_target:   Add a target to the list of all possible targets.
-
-   push_target:  Make this target the top of the stack of currently used
-		 targets, within its particular stratum of the stack.  Result
-		 is 0 if now atop the stack, nonzero if not on top (maybe
-		 should warn user).
-
-   unpush_target: Remove this from the stack of currently used targets,
-		 no matter where it is on the list.  Returns 0 if no
-		 change, 1 if removed from stack.
-
-   pop_target:	 Remove the top thing on the stack of current targets.  */
-
-extern void
-add_target PARAMS ((struct target_ops *));
-
-extern int
-push_target PARAMS ((struct target_ops *));
-
-extern int
-unpush_target PARAMS ((struct target_ops *));
-
-extern void
-target_preopen PARAMS ((int));
-
-extern void
-pop_target PARAMS ((void));
-
-/* Struct section_table maps address ranges to file sections.  It is
-   mostly used with BFD files, but can be used without (e.g. for handling
-   raw disks, or files not in formats handled by BFD).  */
-
-struct section_table {
-  CORE_ADDR addr;		/* Lowest address in section */
-  CORE_ADDR endaddr;		/* 1+highest address in section */
-
-  sec_ptr the_bfd_section;
-
-  bfd	   *bfd;		/* BFD file pointer */
-};
-
-/* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
-   Returns 0 if OK, 1 on error.  */
-
-extern int
-build_section_table PARAMS ((bfd *, struct section_table **,
-			     struct section_table **));
-
-/* From mem-break.c */
-
-extern int memory_remove_breakpoint PARAMS ((CORE_ADDR, char *));
-
-extern int memory_insert_breakpoint PARAMS ((CORE_ADDR, char *));
-
-extern breakpoint_from_pc_fn memory_breakpoint_from_pc;
-#ifndef BREAKPOINT_FROM_PC
-#define BREAKPOINT_FROM_PC(pcptr, lenptr) memory_breakpoint_from_pc (pcptr, lenptr)
-#endif
-
-
-/* From target.c */
-
-extern void
-initialize_targets PARAMS ((void));
-
-extern void
-noprocess PARAMS ((void));
-
-extern void
-find_default_attach PARAMS ((char *, int));
-
-void
-find_default_require_attach PARAMS ((char *, int));
-
-void
-find_default_require_detach PARAMS ((int, char *, int));
-
-extern void
-find_default_create_inferior PARAMS ((char *, char *, char **));
-
-void
-find_default_clone_and_follow_inferior PARAMS ((int, int *));
-
-extern struct target_ops *
-find_core_target PARAMS ((void));
-
-/* Stuff that should be shared among the various remote targets.  */
-
-/* Debugging level.  0 is off, and non-zero values mean to print some debug
-   information (higher values, more information).  */
-extern int remote_debug;
-
-/* Speed in bits per second, or -1 which means don't mess with the speed.  */
-extern int baud_rate;
-/* Timeout limit for response from target. */
-extern int remote_timeout;
-
-extern asection *target_memory_bfd_section;
-
-/* Functions for helping to write a native target.  */
-
-/* This is for native targets which use a unix/POSIX-style waitstatus.  */
-extern void store_waitstatus PARAMS ((struct target_waitstatus *, int));
-
-/* Convert between host signal numbers and enum target_signal's.  */
-extern enum target_signal target_signal_from_host PARAMS ((int));
-extern int target_signal_to_host PARAMS ((enum target_signal));
-
-/* Convert from a number used in a GDB command to an enum target_signal.  */
-extern enum target_signal target_signal_from_command PARAMS ((int));
-
-/* Any target can call this to switch to remote protocol (in remote.c). */
-extern void push_remote_target PARAMS ((char *name, int from_tty));
-
-/* Imported from machine dependent code */
-
-#ifndef SOFTWARE_SINGLE_STEP_P
-#define SOFTWARE_SINGLE_STEP_P 0
-#define SOFTWARE_SINGLE_STEP(sig,bp_p) abort ()
-#endif /* SOFTWARE_SINGLE_STEP_P */
-
-/* Blank target vector entries are initialized to target_ignore. */
-void target_ignore PARAMS ((void));
-
-/* Macro for getting target's idea of a frame pointer.
-   FIXME: GDB's whole scheme for dealing with "frames" and
-   "frame pointers" needs a serious shakedown.  */
-#ifndef TARGET_VIRTUAL_FRAME_POINTER
-#define TARGET_VIRTUAL_FRAME_POINTER(ADDR, REGP, OFFP) \
-   do { *(REGP) = FP_REGNUM; *(OFFP) =  0; } while (0)
-#endif /* TARGET_VIRTUAL_FRAME_POINTER */
-
-#endif	/* !defined (TARGET_H) */