gdb/nat/linux-ptrace.h

   1 /* Copyright (C) 2011-2014 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef COMMON_LINUX_PTRACE_H
  19 #define COMMON_LINUX_PTRACE_H
  20
  21 struct buffer;
  22
  23 #include <sys/ptrace.h>
  24
  25 #ifdef __UCLIBC__
  26 #if !(defined(__UCLIBC_HAS_MMU__) || defined(__ARCH_HAS_MMU__))
  27 /* PTRACE_TEXT_ADDR and friends.  */
  28 #include <asm/ptrace.h>
  29 #define HAS_NOMMU
  30 #endif
  31 #endif
  32
  33 #if !defined(PTRACE_TYPE_ARG3)
  34 #define PTRACE_TYPE_ARG3 void *
  35 #endif
  36
  37 #if !defined(PTRACE_TYPE_ARG4)
  38 #define PTRACE_TYPE_ARG4 void *
  39 #endif
  40
  41 #ifndef PTRACE_GETSIGINFO
  42 # define PTRACE_GETSIGINFO 0x4202
  43 # define PTRACE_SETSIGINFO 0x4203
  44 #endif /* PTRACE_GETSIGINF */
  45
  46 /* If the system headers did not provide the constants, hard-code the normal
  47    values.  */
  48 #ifndef PTRACE_EVENT_FORK
  49
  50 #define PTRACE_SETOPTIONS       0x4200
  51 #define PTRACE_GETEVENTMSG      0x4201
  52
  53 /* options set using PTRACE_SETOPTIONS */
  54 #define PTRACE_O_TRACESYSGOOD   0x00000001
  55 #define PTRACE_O_TRACEFORK      0x00000002
  56 #define PTRACE_O_TRACEVFORK     0x00000004
  57 #define PTRACE_O_TRACECLONE     0x00000008
  58 #define PTRACE_O_TRACEEXEC      0x00000010
  59 #define PTRACE_O_TRACEVFORKDONE 0x00000020
  60 #define PTRACE_O_TRACEEXIT      0x00000040
  61
  62 /* Wait extended result codes for the above trace options.  */
  63 #define PTRACE_EVENT_FORK       1
  64 #define PTRACE_EVENT_VFORK      2
  65 #define PTRACE_EVENT_CLONE      3
  66 #define PTRACE_EVENT_EXEC       4
  67 #define PTRACE_EVENT_VFORK_DONE 5
  68 #define PTRACE_EVENT_EXIT       6
  69
  70 #endif /* PTRACE_EVENT_FORK */
  71
  72 #ifndef PTRACE_O_EXITKILL
  73 /* Only defined in Linux Kernel 3.8 or later.  */
  74 #define PTRACE_O_EXITKILL       0x00100000
  75 #endif
  76
  77 #if (defined __bfin__ || defined __frv__ || defined __sh__) \
  78     && !defined PTRACE_GETFDPIC
  79 #define PTRACE_GETFDPIC         31
  80 #define PTRACE_GETFDPIC_EXEC    0
  81 #define PTRACE_GETFDPIC_INTERP  1
  82 #endif
  83
  84 /* We can't always assume that this flag is available, but all systems
  85    with the ptrace event handlers also have __WALL, so it's safe to use
  86    in some contexts.  */
  87 #ifndef __WALL
  88 #define __WALL          0x40000000 /* Wait for any child.  */
  89 #endif
  90
  91 extern void linux_ptrace_attach_fail_reason (pid_t pid, struct buffer *buffer);
  92 extern void linux_ptrace_init_warnings (void);
  93 extern void linux_enable_event_reporting (pid_t pid, int attached);
  94 extern void linux_disable_event_reporting (pid_t pid);
  95 extern int linux_supports_tracefork (void);
  96 extern int linux_supports_traceclone (void);
  97 extern int linux_supports_tracevforkdone (void);
  98 extern int linux_supports_tracesysgood (void);
  99 extern void linux_ptrace_set_additional_flags (int);
 100 extern int linux_ptrace_get_extended_event (int wstat);
 101 extern int linux_is_extended_waitstatus (int wstat);
 102
 103 #endif /* COMMON_LINUX_PTRACE_H */