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280 lines
8.8 KiB
C
280 lines
8.8 KiB
C
/* Memory breakpoint interfaces for the remote server for GDB.
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Copyright (C) 2002-2021 Free Software Foundation, Inc.
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Contributed by MontaVista Software.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDBSERVER_MEM_BREAK_H
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#define GDBSERVER_MEM_BREAK_H
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#include "gdbsupport/break-common.h"
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/* Breakpoints are opaque. */
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struct breakpoint;
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struct gdb_breakpoint;
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struct fast_tracepoint_jump;
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struct raw_breakpoint;
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struct process_info;
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#define Z_PACKET_SW_BP '0'
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#define Z_PACKET_HW_BP '1'
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#define Z_PACKET_WRITE_WP '2'
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#define Z_PACKET_READ_WP '3'
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#define Z_PACKET_ACCESS_WP '4'
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/* The low level breakpoint types. */
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enum raw_bkpt_type
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{
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/* Software/memory breakpoint. */
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raw_bkpt_type_sw,
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/* Hardware-assisted breakpoint. */
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raw_bkpt_type_hw,
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/* Hardware-assisted write watchpoint. */
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raw_bkpt_type_write_wp,
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/* Hardware-assisted read watchpoint. */
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raw_bkpt_type_read_wp,
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/* Hardware-assisted access watchpoint. */
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raw_bkpt_type_access_wp
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};
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/* Map the protocol breakpoint/watchpoint type Z_TYPE to the internal
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raw breakpoint type. */
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enum raw_bkpt_type Z_packet_to_raw_bkpt_type (char z_type);
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/* Map a raw breakpoint type to an enum target_hw_bp_type. */
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enum target_hw_bp_type raw_bkpt_type_to_target_hw_bp_type
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(enum raw_bkpt_type raw_type);
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/* Create a new GDB breakpoint of type Z_TYPE at ADDR with kind KIND.
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Returns a pointer to the newly created breakpoint on success. On
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failure returns NULL and sets *ERR to either -1 for error, or 1 if
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Z_TYPE breakpoints are not supported on this target. */
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struct gdb_breakpoint *set_gdb_breakpoint (char z_type, CORE_ADDR addr,
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int kind, int *err);
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/* Delete a GDB breakpoint of type Z_TYPE and kind KIND previously
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inserted at ADDR with set_gdb_breakpoint_at. Returns 0 on success,
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-1 on error, and 1 if Z_TYPE breakpoints are not supported on this
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target. */
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int delete_gdb_breakpoint (char z_type, CORE_ADDR addr, int kind);
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/* Returns TRUE if there's a software or hardware (code) breakpoint at
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ADDR in our tables, inserted, or not. */
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int breakpoint_here (CORE_ADDR addr);
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/* Returns TRUE if there's any inserted software or hardware (code)
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breakpoint set at ADDR. */
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int breakpoint_inserted_here (CORE_ADDR addr);
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/* Returns TRUE if there's any inserted software breakpoint at
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ADDR. */
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int software_breakpoint_inserted_here (CORE_ADDR addr);
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/* Returns TRUE if there's any inserted hardware (code) breakpoint at
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ADDR. */
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int hardware_breakpoint_inserted_here (CORE_ADDR addr);
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/* Returns TRUE if there's any single-step breakpoint at ADDR. */
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int single_step_breakpoint_inserted_here (CORE_ADDR addr);
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/* Clear all breakpoint conditions and commands associated with a
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breakpoint. */
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void clear_breakpoint_conditions_and_commands (struct gdb_breakpoint *bp);
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/* Set target-side condition CONDITION to the breakpoint at ADDR.
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Returns false on failure. On success, advances CONDITION pointer
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past the condition and returns true. */
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int add_breakpoint_condition (struct gdb_breakpoint *bp,
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const char **condition);
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/* Set target-side commands COMMANDS to the breakpoint at ADDR.
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Returns false on failure. On success, advances COMMANDS past the
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commands and returns true. If PERSIST, the commands should run
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even while GDB is disconnected. */
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int add_breakpoint_commands (struct gdb_breakpoint *bp, const char **commands,
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int persist);
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/* Return true if PROC has any persistent command. */
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bool any_persistent_commands (process_info *proc);
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/* Evaluation condition (if any) at breakpoint BP. Return 1 if
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true and 0 otherwise. */
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int gdb_condition_true_at_breakpoint (CORE_ADDR where);
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int gdb_no_commands_at_breakpoint (CORE_ADDR where);
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void run_breakpoint_commands (CORE_ADDR where);
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/* Returns TRUE if there's a GDB breakpoint (Z0 or Z1) set at
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WHERE. */
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int gdb_breakpoint_here (CORE_ADDR where);
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/* Create a new breakpoint at WHERE, and call HANDLER when
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it is hit. HANDLER should return 1 if the breakpoint
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should be deleted, 0 otherwise. The type of the created
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breakpoint is other_breakpoint. */
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struct breakpoint *set_breakpoint_at (CORE_ADDR where,
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int (*handler) (CORE_ADDR));
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/* Delete a breakpoint. */
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int delete_breakpoint (struct breakpoint *bkpt);
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/* Set a single-step breakpoint at STOP_AT for thread represented by
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PTID. */
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void set_single_step_breakpoint (CORE_ADDR stop_at, ptid_t ptid);
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/* Delete all single-step breakpoints of THREAD. */
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void delete_single_step_breakpoints (struct thread_info *thread);
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/* Reinsert all single-step breakpoints of THREAD. */
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void reinsert_single_step_breakpoints (struct thread_info *thread);
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/* Uninsert all single-step breakpoints of THREAD. This still leaves
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the single-step breakpoints in the table. */
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void uninsert_single_step_breakpoints (struct thread_info *thread);
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/* Reinsert breakpoints at WHERE (and change their status to
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inserted). */
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void reinsert_breakpoints_at (CORE_ADDR where);
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/* The THREAD has single-step breakpoints or not. */
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int has_single_step_breakpoints (struct thread_info *thread);
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/* Uninsert breakpoints at WHERE (and change their status to
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uninserted). This still leaves the breakpoints in the table. */
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void uninsert_breakpoints_at (CORE_ADDR where);
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/* Reinsert all breakpoints of the current process (and change their
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status to inserted). */
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void reinsert_all_breakpoints (void);
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/* Uninsert all breakpoints of the current process (and change their
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status to uninserted). This still leaves the breakpoints in the
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table. */
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void uninsert_all_breakpoints (void);
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/* See if any breakpoint claims ownership of STOP_PC. Call the handler for
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the breakpoint, if found. */
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void check_breakpoints (CORE_ADDR stop_pc);
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/* See if any breakpoints shadow the target memory area from MEM_ADDR
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to MEM_ADDR + MEM_LEN. Update the data already read from the target
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(in BUF) if necessary. */
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void check_mem_read (CORE_ADDR mem_addr, unsigned char *buf, int mem_len);
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/* See if any breakpoints shadow the target memory area from MEM_ADDR
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to MEM_ADDR + MEM_LEN. Update the data to be written to the target
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(in BUF, a copy of MYADDR on entry) if necessary, as well as the
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original data for any breakpoints. */
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void check_mem_write (CORE_ADDR mem_addr,
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unsigned char *buf, const unsigned char *myaddr, int mem_len);
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/* Delete all breakpoints. */
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void delete_all_breakpoints (void);
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/* Clear the "inserted" flag in all breakpoints of PROC. */
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void mark_breakpoints_out (struct process_info *proc);
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/* Delete all breakpoints, but do not try to un-insert them from the
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inferior. */
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void free_all_breakpoints (struct process_info *proc);
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/* Check if breakpoints still seem to be inserted in the inferior. */
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void validate_breakpoints (void);
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/* Insert a fast tracepoint jump at WHERE, using instruction INSN, of
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LENGTH bytes. */
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struct fast_tracepoint_jump *set_fast_tracepoint_jump (CORE_ADDR where,
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unsigned char *insn,
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ULONGEST length);
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/* Increment reference counter of JP. */
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void inc_ref_fast_tracepoint_jump (struct fast_tracepoint_jump *jp);
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/* Delete fast tracepoint jump TODEL from our tables, and uninsert if
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from memory. */
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int delete_fast_tracepoint_jump (struct fast_tracepoint_jump *todel);
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/* Returns true if there's fast tracepoint jump set at WHERE. */
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int fast_tracepoint_jump_here (CORE_ADDR);
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/* Uninsert fast tracepoint jumps at WHERE (and change their status to
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uninserted). This still leaves the tracepoints in the table. */
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void uninsert_fast_tracepoint_jumps_at (CORE_ADDR pc);
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/* Reinsert fast tracepoint jumps at WHERE (and change their status to
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inserted). */
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void reinsert_fast_tracepoint_jumps_at (CORE_ADDR where);
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/* Insert a memory breakpoint. */
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int insert_memory_breakpoint (struct raw_breakpoint *bp);
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/* Remove a previously inserted memory breakpoint. */
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int remove_memory_breakpoint (struct raw_breakpoint *bp);
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/* Create a new breakpoint list in CHILD_THREAD's process that is a
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copy of breakpoint list in PARENT_THREAD's process. */
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void clone_all_breakpoints (struct thread_info *child_thread,
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const struct thread_info *parent_thread);
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#endif /* GDBSERVER_MEM_BREAK_H */
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