gdb/nat/x86-linux.h

   1 /* Native-dependent code for GNU/Linux x86 (i386 and x86-64).
   2
   3    Copyright (C) 1999-2024 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GDB_NAT_X86_LINUX_H
  21 #define GDB_NAT_X86_LINUX_H
  22
  23 #include "nat/linux-nat.h"
  24
  25 /* Set whether our local mirror of LWP's debug registers has been
  26    changed since the values were last written to the thread.  Nonzero
  27    indicates that a change has been made, zero indicates no change.  */
  28
  29 extern void lwp_set_debug_registers_changed (struct lwp_info *lwp,
  30                                              int value);
  31
  32 /* Return nonzero if our local mirror of LWP's debug registers has
  33    been changed since the values were last written to the thread,
  34    zero otherwise.  */
  35
  36 extern int lwp_debug_registers_changed (struct lwp_info *lwp);
  37
  38 /* Function to call when a new thread is detected.  */
  39
  40 extern void x86_linux_new_thread (struct lwp_info *lwp);
  41
  42 /* Function to call when a thread is being deleted.  */
  43
  44 extern void x86_linux_delete_thread (struct arch_lwp_info *arch_lwp);
  45
  46 /* Function to call prior to resuming a thread.  */
  47
  48 extern void x86_linux_prepare_to_resume (struct lwp_info *lwp);
  49
  50 /* Return value from x86_linux_ptrace_get_arch_size function.  Indicates if
  51    a thread is 32-bit, 64-bit, or x32.  */
  52
  53 struct x86_linux_arch_size
  54 {
  55   explicit x86_linux_arch_size (bool is_64bit, bool is_x32)
  56     : m_is_64bit (is_64bit),
  57       m_is_x32 (is_x32)
  58   {
  59     /* Nothing.  */
  60   }
  61
  62   bool is_64bit () const
  63   { return m_is_64bit; }
  64
  65   bool is_x32 () const
  66   { return m_is_x32; }
  67
  68 private:
  69   bool m_is_64bit = false;
  70   bool m_is_x32 = false;
  71 };
  72
  73 /* Use ptrace calls to figure out if thread TID is 32-bit, 64-bit, or
  74    64-bit running in x32 mode.  */
  75
  76 extern x86_linux_arch_size x86_linux_ptrace_get_arch_size (int tid);
  77
  78 #endif /* GDB_NAT_X86_LINUX_H */