mirror of
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136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/*
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* This file is part of mtrace-ng.
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* Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
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* This file is based on the ltrace source
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*
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* This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef _INC_BREAKPOINT_H
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#define _INC_BREAKPOINT_H
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#include <stdlib.h>
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#include "arch.h"
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#include "list.h"
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#include "sysdep.h"
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#include "forward.h"
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#define BP_REORDER_THRESHOLD 2048U
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#define BP_SW 0
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#define BP_HW_SCRATCH 1
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#define BP_HW 2
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#define BP_AUTO 3
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struct breakpoint {
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#if HW_BREAKPOINTS > 1
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unsigned int hwcnt;
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#endif
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unsigned int refcnt;
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unsigned int count;
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unsigned int ext:8;
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unsigned int type:2;
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unsigned int enabled:1;
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unsigned int locked:1;
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unsigned int deleted:1;
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unsigned int hw:1;
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unsigned int was_hw:1;
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unsigned int break_insn:1;
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union {
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unsigned char orig_value[BREAKPOINT_LENGTH];
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#if HW_BREAKPOINTS > 0
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unsigned int hw_bp_slot;
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#endif
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};
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int (*on_hit)(struct task *task, struct breakpoint *bp);
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arch_addr_t addr;
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struct library_symbol *libsym;
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struct list_head link_list;
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};
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/* setup the basic breakpoint support for a given leader */
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void breakpoint_setup(struct task *leader);
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/* Call on-hit handler of BP, if any is set. */
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int breakpoint_on_hit(struct task *task, struct breakpoint *bp);
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/* get a new breakpoint structure. */
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struct breakpoint *breakpoint_new(struct task *task, arch_addr_t addr, struct library_symbol *libsym, int type);
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/* get a new extended breakpoint structure . */
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struct breakpoint *breakpoint_new_ext(struct task *task, arch_addr_t addr, struct library_symbol *libsym, int type, size_t ext);
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/* insert a new breakpoint structure if necessary and turn the breakpoint on */
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struct breakpoint *breakpoint_insert(struct task *task, arch_addr_t addr, struct library_symbol *libsym, int type);
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/* delete a breakpoint in task */
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void breakpoint_delete(struct task *task, struct breakpoint *bp);
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/* Enable breakpoint in task */
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void breakpoint_enable(struct task *task, struct breakpoint *bp);
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/* Disable task breakpoint task */
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void breakpoint_disable(struct task *task, struct breakpoint *bp);
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void breakpoint_enable_all(struct task *leader);
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void breakpoint_disable_all(struct task *leader);
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void breakpoint_enable_all_nonlocked(struct task *leader);
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void breakpoint_disable_all_nonlocked(struct task *leader);
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void breakpoint_clear_all(struct task *leader);
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int breakpoint_clone_all(struct task *clone, struct task *leader);
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struct breakpoint *breakpoint_find(struct task *leader, arch_addr_t addr);
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#if HW_BREAKPOINTS > 0
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void enable_scratch_hw_bp(struct task *task, struct breakpoint *bp);
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void disable_scratch_hw_bp(struct task *task, struct breakpoint *bp);
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#else
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static inline void enable_scratch_hw_bp(struct task *task, struct breakpoint *bp)
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{
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}
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static inline void disable_scratch_hw_bp(struct task *task, struct breakpoint *bp)
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{
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}
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#endif
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#if HW_BREAKPOINTS > 1
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void reorder_hw_bp(struct task *task);
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void breakpoint_hw_clone(struct task *task);
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void breakpoint_hw_destroy(struct task *task);
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#else
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static inline void breakpoint_hw_clone(struct task *task)
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{
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}
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static inline void breakpoint_hw_destroy(struct task *task)
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{
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}
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#endif
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struct breakpoint *breakpoint_get(struct breakpoint *bp);
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int breakpoint_put(struct breakpoint *bp);
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#endif
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