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- /* Native-dependent code for FreeBSD x86.
- Copyright (C) 2022 Free Software Foundation, Inc.
- 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/>. */
- #include "defs.h"
- #include "x86-fbsd-nat.h"
- /* Implement the virtual fbsd_nat_target::low_new_fork method. */
- void
- x86_fbsd_nat_target::low_new_fork (ptid_t parent, pid_t child)
- {
- struct x86_debug_reg_state *parent_state, *child_state;
- /* If there is no parent state, no watchpoints nor breakpoints have
- been set, so there is nothing to do. */
- parent_state = x86_lookup_debug_reg_state (parent.pid ());
- if (parent_state == nullptr)
- return;
- /* The kernel clears debug registers in the new child process after
- fork, but GDB core assumes the child inherits the watchpoints/hw
- breakpoints of the parent, and will remove them all from the
- forked off process. Copy the debug registers mirrors into the
- new process so that all breakpoints and watchpoints can be
- removed together. */
- child_state = x86_debug_reg_state (child);
- *child_state = *parent_state;
- }
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