/* Memory breakpoint interfaces for the remote server for GDB.
   Copyright (C) 2002, 2005, 2007, 2008, 2009, 2010, 2011
   Free Software Foundation, Inc.

   Contributed by MontaVista Software.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#ifndef MEM_BREAK_H
#define MEM_BREAK_H

/* Breakpoints are opaque.  */
struct breakpoint;
struct fast_tracepoint_jump;

/* Create a new GDB breakpoint at WHERE.  Returns -1 if breakpoints
   are not supported on this target, 0 otherwise.  */

int set_gdb_breakpoint_at (CORE_ADDR where);

/* Returns TRUE if there's any breakpoint at ADDR in our tables,
   inserted, or not.  */

int breakpoint_here (CORE_ADDR addr);

/* Returns TRUE if there's any inserted breakpoint set at ADDR.  */

int breakpoint_inserted_here (CORE_ADDR addr);

/* Returns TRUE if there's a GDB breakpoint set at ADDR.  */

int gdb_breakpoint_here (CORE_ADDR where);

/* Create a new breakpoint at WHERE, and call HANDLER when
   it is hit.  HANDLER should return 1 if the breakpoint
   should be deleted, 0 otherwise.  */

struct breakpoint *set_breakpoint_at (CORE_ADDR where,
				      int (*handler) (CORE_ADDR));

/* Delete a GDB breakpoint previously inserted at ADDR with
   set_gdb_breakpoint_at.  */

int delete_gdb_breakpoint_at (CORE_ADDR addr);

/* Delete a breakpoint.  */

int delete_breakpoint (struct breakpoint *bkpt);

/* Set a reinsert breakpoint at STOP_AT.  */

void set_reinsert_breakpoint (CORE_ADDR stop_at);

/* Delete all reinsert breakpoints.  */

void delete_reinsert_breakpoints (void);

/* Reinsert breakpoints at WHERE (and change their status to
   inserted).  */

void reinsert_breakpoints_at (CORE_ADDR where);

/* Uninsert breakpoints at WHERE (and change their status to
   uninserted).  This still leaves the breakpoints in the table.  */

void uninsert_breakpoints_at (CORE_ADDR where);

/* Reinsert all breakpoints of the current process (and change their
   status to inserted).  */

void reinsert_all_breakpoints (void);

/* Uninsert all breakpoints of the current process (and change their
   status to uninserted).  This still leaves the breakpoints in the
   table.  */

void uninsert_all_breakpoints (void);

/* See if any breakpoint claims ownership of STOP_PC.  Call the handler for
   the breakpoint, if found.  */

void check_breakpoints (CORE_ADDR stop_pc);

/* See if any breakpoints shadow the target memory area from MEM_ADDR
   to MEM_ADDR + MEM_LEN.  Update the data already read from the target
   (in BUF) if necessary.  */

void check_mem_read (CORE_ADDR mem_addr, unsigned char *buf, int mem_len);

/* See if any breakpoints shadow the target memory area from MEM_ADDR
   to MEM_ADDR + MEM_LEN.  Update the data to be written to the target
   (in BUF, a copy of MYADDR on entry) if necessary, as well as the
   original data for any breakpoints.  */

void check_mem_write (CORE_ADDR mem_addr,
		      unsigned char *buf, const unsigned char *myaddr, int mem_len);

/* Set the byte pattern to insert for memory breakpoints.  This function
   must be called before any breakpoints are set.  */

void set_breakpoint_data (const unsigned char *bp_data, int bp_len);

/* Delete all breakpoints.  */

void delete_all_breakpoints (void);

/* Clear the "inserted" flag in all breakpoints of PROC.  */

void mark_breakpoints_out (struct process_info *proc);

/* Delete all breakpoints, but do not try to un-insert them from the
   inferior.  */

void free_all_breakpoints (struct process_info *proc);

/* Check if breakpoints still seem to be inserted in the inferior.  */

void validate_breakpoints (void);

/* Insert a fast tracepoint jump at WHERE, using instruction INSN, of
   LENGTH bytes.  */

struct fast_tracepoint_jump *set_fast_tracepoint_jump (CORE_ADDR where,
						       unsigned char *insn,
						       ULONGEST length);

/* Increment reference counter of JP.  */
void inc_ref_fast_tracepoint_jump (struct fast_tracepoint_jump *jp);

/* Delete fast tracepoint jump TODEL from our tables, and uninsert if
   from memory.  */

int delete_fast_tracepoint_jump (struct fast_tracepoint_jump *todel);

/* Returns true if there's fast tracepoint jump set at WHERE.  */

int fast_tracepoint_jump_here (CORE_ADDR);

/* Uninsert fast tracepoint jumps at WHERE (and change their status to
   uninserted).  This still leaves the tracepoints in the table.  */

void uninsert_fast_tracepoint_jumps_at (CORE_ADDR pc);

/* Reinsert fast tracepoint jumps at WHERE (and change their status to
   inserted).  */

void reinsert_fast_tracepoint_jumps_at (CORE_ADDR where);

#endif /* MEM_BREAK_H */