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75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* Native-dependent code for GNU/Linux x86 (i386 and x86-64).
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Copyright (C) 1999-2016 Free Software Foundation, Inc.
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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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#include "common-defs.h"
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#include "x86-linux.h"
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#include "x86-linux-dregs.h"
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/* Per-thread arch-specific data we want to keep. */
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struct arch_lwp_info
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{
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/* Non-zero if our copy differs from what's recorded in the
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thread. */
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int debug_registers_changed;
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};
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/* See nat/x86-linux.h. */
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void
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lwp_set_debug_registers_changed (struct lwp_info *lwp, int value)
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{
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if (lwp_arch_private_info (lwp) == NULL)
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lwp_set_arch_private_info (lwp, XCNEW (struct arch_lwp_info));
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lwp_arch_private_info (lwp)->debug_registers_changed = value;
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}
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/* See nat/x86-linux.h. */
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int
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lwp_debug_registers_changed (struct lwp_info *lwp)
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{
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struct arch_lwp_info *info = lwp_arch_private_info (lwp);
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/* NULL means either that this is the main thread still going
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through the shell, or that no watchpoint has been set yet.
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The debug registers are unchanged in either case. */
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if (info == NULL)
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return 0;
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return info->debug_registers_changed;
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}
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/* See nat/x86-linux.h. */
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void
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x86_linux_new_thread (struct lwp_info *lwp)
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{
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lwp_set_debug_registers_changed (lwp, 1);
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}
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/* See nat/x86-linux.h. */
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void
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x86_linux_prepare_to_resume (struct lwp_info *lwp)
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{
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x86_linux_update_debug_registers (lwp);
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}
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