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- /* Memory breakpoint interfaces for the remote server for GDB.
- Copyright (C) 2002-2022 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 GDBSERVER_MEM_BREAK_H
- #define GDBSERVER_MEM_BREAK_H
- #include "gdbsupport/break-common.h"
- /* Breakpoints are opaque. */
- struct breakpoint;
- struct gdb_breakpoint;
- struct fast_tracepoint_jump;
- struct raw_breakpoint;
- struct process_info;
- #define Z_PACKET_SW_BP '0'
- #define Z_PACKET_HW_BP '1'
- #define Z_PACKET_WRITE_WP '2'
- #define Z_PACKET_READ_WP '3'
- #define Z_PACKET_ACCESS_WP '4'
- /* The low level breakpoint types. */
- enum raw_bkpt_type
- {
- /* Software/memory breakpoint. */
- raw_bkpt_type_sw,
- /* Hardware-assisted breakpoint. */
- raw_bkpt_type_hw,
- /* Hardware-assisted write watchpoint. */
- raw_bkpt_type_write_wp,
- /* Hardware-assisted read watchpoint. */
- raw_bkpt_type_read_wp,
- /* Hardware-assisted access watchpoint. */
- raw_bkpt_type_access_wp
- };
- /* Map the protocol breakpoint/watchpoint type Z_TYPE to the internal
- raw breakpoint type. */
- enum raw_bkpt_type Z_packet_to_raw_bkpt_type (char z_type);
- /* Map a raw breakpoint type to an enum target_hw_bp_type. */
- enum target_hw_bp_type raw_bkpt_type_to_target_hw_bp_type
- (enum raw_bkpt_type raw_type);
- /* Create a new GDB breakpoint of type Z_TYPE at ADDR with kind KIND.
- Returns a pointer to the newly created breakpoint on success. On
- failure returns NULL and sets *ERR to either -1 for error, or 1 if
- Z_TYPE breakpoints are not supported on this target. */
- struct gdb_breakpoint *set_gdb_breakpoint (char z_type, CORE_ADDR addr,
- int kind, int *err);
- /* Delete a GDB breakpoint of type Z_TYPE and kind KIND previously
- inserted at ADDR with set_gdb_breakpoint_at. Returns 0 on success,
- -1 on error, and 1 if Z_TYPE breakpoints are not supported on this
- target. */
- int delete_gdb_breakpoint (char z_type, CORE_ADDR addr, int kind);
- /* Returns TRUE if there's a software or hardware (code) breakpoint at
- ADDR in our tables, inserted, or not. */
- int breakpoint_here (CORE_ADDR addr);
- /* Returns TRUE if there's any inserted software or hardware (code)
- breakpoint set at ADDR. */
- int breakpoint_inserted_here (CORE_ADDR addr);
- /* Returns TRUE if there's any inserted software breakpoint at
- ADDR. */
- int software_breakpoint_inserted_here (CORE_ADDR addr);
- /* Returns TRUE if there's any inserted hardware (code) breakpoint at
- ADDR. */
- int hardware_breakpoint_inserted_here (CORE_ADDR addr);
- /* Returns TRUE if there's any single-step breakpoint at ADDR. */
- int single_step_breakpoint_inserted_here (CORE_ADDR addr);
- /* Clear all breakpoint conditions and commands associated with a
- breakpoint. */
- void clear_breakpoint_conditions_and_commands (struct gdb_breakpoint *bp);
- /* Set target-side condition CONDITION to the breakpoint at ADDR.
- Returns false on failure. On success, advances CONDITION pointer
- past the condition and returns true. */
- int add_breakpoint_condition (struct gdb_breakpoint *bp,
- const char **condition);
- /* Set target-side commands COMMANDS to the breakpoint at ADDR.
- Returns false on failure. On success, advances COMMANDS past the
- commands and returns true. If PERSIST, the commands should run
- even while GDB is disconnected. */
- int add_breakpoint_commands (struct gdb_breakpoint *bp, const char **commands,
- int persist);
- /* Return true if PROC has any persistent command. */
- bool any_persistent_commands (process_info *proc);
- /* Evaluation condition (if any) at breakpoint BP. Return 1 if
- true and 0 otherwise. */
- int gdb_condition_true_at_breakpoint (CORE_ADDR where);
- int gdb_no_commands_at_breakpoint (CORE_ADDR where);
- void run_breakpoint_commands (CORE_ADDR where);
- /* Returns TRUE if there's a GDB breakpoint (Z0 or Z1) set at
- WHERE. */
- 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. The type of the created
- breakpoint is other_breakpoint. */
- struct breakpoint *set_breakpoint_at (CORE_ADDR where,
- int (*handler) (CORE_ADDR));
- /* Delete a breakpoint. */
- int delete_breakpoint (struct breakpoint *bkpt);
- /* Set a single-step breakpoint at STOP_AT for thread represented by
- PTID. */
- void set_single_step_breakpoint (CORE_ADDR stop_at, ptid_t ptid);
- /* Delete all single-step breakpoints of THREAD. */
- void delete_single_step_breakpoints (struct thread_info *thread);
- /* Reinsert all single-step breakpoints of THREAD. */
- void reinsert_single_step_breakpoints (struct thread_info *thread);
- /* Uninsert all single-step breakpoints of THREAD. This still leaves
- the single-step breakpoints in the table. */
- void uninsert_single_step_breakpoints (struct thread_info *thread);
- /* Reinsert breakpoints at WHERE (and change their status to
- inserted). */
- void reinsert_breakpoints_at (CORE_ADDR where);
- /* The THREAD has single-step breakpoints or not. */
- int has_single_step_breakpoints (struct thread_info *thread);
- /* 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);
- /* 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);
- /* Insert a memory breakpoint. */
- int insert_memory_breakpoint (struct raw_breakpoint *bp);
- /* Remove a previously inserted memory breakpoint. */
- int remove_memory_breakpoint (struct raw_breakpoint *bp);
- /* Create a new breakpoint list in CHILD_THREAD's process that is a
- copy of breakpoint list in PARENT_THREAD's process. */
- void clone_all_breakpoints (struct thread_info *child_thread,
- const struct thread_info *parent_thread);
- #endif /* GDBSERVER_MEM_BREAK_H */
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