gdb/gdb_ptrace.h

   1 /* Portable <sys/ptrace.h>
   2
   3    Copyright (C) 2004, 2005, 2007 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 2 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, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef GDB_PTRACE_H
  23 #define GDB_PTRACE_H
  24
  25 /* The <sys/ptrace.h> header was introduced with 4.4BSD, and provided
  26    the PT_* symbolic constants for the ptrace(2) request numbers.  The
  27    ptrace(2) prototype was added later to the same header on BSD.
  28    SunOS and GNU/Linux have slightly different symbolic names for the
  29    constants that start with PTRACE_*.  System V still doesn't have
  30    (and probably never will have) a <sys/ptrace.h> with symbolic
  31    constants; the ptrace(2) prototype can be found in <unistd.h>.
  32    Fortunately all systems use the same numerical constants for the
  33    common ptrace requests.  */
  34
  35 #ifdef HAVE_PTRACE_H
  36 # include <ptrace.h>
  37 #elif defined(HAVE_SYS_PTRACE_H)
  38 # include <sys/ptrace.h>
  39 #endif
  40
  41 /* No need to include <unistd.h> since it's already included by
  42    "defs.h".  */
  43
  44 #ifndef PT_TRACE_ME
  45 # define PT_TRACE_ME    0
  46 #endif
  47
  48 #ifndef PT_READ_I
  49 # define PT_READ_I      1       /* Read word in child's I space.  */
  50 #endif
  51
  52 #ifndef PT_READ_D
  53 # define PT_READ_D      2       /* Read word in child's D space.  */
  54 #endif
  55
  56 #ifndef PT_READ_U
  57 # define PT_READ_U      3       /* Read word in child's U space.  */
  58 #endif
  59
  60 #ifndef PT_WRITE_I
  61 # define PT_WRITE_I     4       /* Write word in child's I space.  */
  62 #endif
  63
  64 #ifndef PT_WRITE_D
  65 # define PT_WRITE_D     5       /* Write word in child's D space.  */
  66 #endif
  67
  68 #ifndef PT_WRITE_U
  69 # define PT_WRITE_U     6       /* Write word in child's U space.  */
  70 #endif
  71
  72 /* HP-UX doesn't define PT_CONTINUE and PT_STEP.  Instead of those two
  73    ptrace requests, it has PT_CONTIN, PT_CONTIN1, PT_SINGLE and
  74    PT_SINGLE1.  PT_CONTIN1 and PT_SINGLE1 preserve pending signals,
  75    which apparently is what is wanted by the HP-UX native code.  */
  76
  77 #ifndef PT_CONTINUE
  78 # ifdef PT_CONTIN1
  79 #  define PT_CONTINUE   PT_CONTIN1
  80 # else
  81 #  define PT_CONTINUE   7       /* Continue the child.  */
  82 # endif
  83 #endif
  84
  85 #ifndef PT_KILL
  86 # define PT_KILL        8       /* Kill the child process.  */
  87 #endif
  88
  89 #ifndef PT_STEP
  90 # ifdef PT_SINGLE1
  91 #  define PT_STEP       PT_SINGLE1
  92 # else
  93 #  define PT_STEP       9       /* Single step the child.   */
  94 # endif
  95 #endif
  96
  97 /* Not all systems support attaching and detaching.   */
  98
  99 #ifndef PT_ATTACH
 100 # ifdef PTRACE_ATTACH
 101 #  define PT_ATTACH PTRACE_ATTACH
 102 # endif
 103 #endif
 104
 105 #ifndef PT_DETACH
 106 # ifdef PTRACE_DETACH
 107 #  define PT_DETACH PTRACE_DETACH
 108 # endif
 109 #endif
 110
 111 /* Some systems, in particular DEC OSF/1, Digital Unix, Compaq Tru64
 112    or whatever it's called these days, don't provide a prototype for
 113    ptrace.  Provide one to silence compiler warnings.  */
 114
 115 #ifndef HAVE_DECL_PTRACE
 116 extern PTRACE_TYPE_RET ptrace();
 117 #endif
 118
 119 /* Some systems, at least AIX and HP-UX have a ptrace with five
 120    arguments.  Since we never use the fifth argument, define a ptrace
 121    macro that calls the real ptrace with the last argument set to
 122    zero.  */
 123
 124 #ifdef PTRACE_TYPE_ARG5
 125 # define ptrace(request, pid, addr, data) ptrace (request, pid, addr, data, 0)
 126 #endif
 127
 128 #endif /* gdb_ptrace.h */