46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
|
/* 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;
|
||
|
|
}
|