1 /* Portable <sys/ptrace.h> 2 3 Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011 4 Free Software Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #ifndef GDB_PTRACE_H 22 #define GDB_PTRACE_H 23 24 /* The <sys/ptrace.h> header was introduced with 4.4BSD, and provided 25 the PT_* symbolic constants for the ptrace(2) request numbers. The 26 ptrace(2) prototype was added later to the same header on BSD. 27 SunOS and GNU/Linux have slightly different symbolic names for the 28 constants that start with PTRACE_*. System V still doesn't have 29 (and probably never will have) a <sys/ptrace.h> with symbolic 30 constants; the ptrace(2) prototype can be found in <unistd.h>. 31 Fortunately all systems use the same numerical constants for the 32 common ptrace requests. */ 33 34 #ifdef HAVE_PTRACE_H 35 # include <ptrace.h> 36 #elif defined(HAVE_SYS_PTRACE_H) 37 # include <sys/ptrace.h> 38 #endif 39 40 /* No need to include <unistd.h> since it's already included by 41 "defs.h". */ 42 43 #ifndef PT_TRACE_ME 44 # define PT_TRACE_ME 0 45 #endif 46 47 #ifndef PT_READ_I 48 # define PT_READ_I 1 /* Read word in child's I space. */ 49 #endif 50 51 #ifndef PT_READ_D 52 # define PT_READ_D 2 /* Read word in child's D space. */ 53 #endif 54 55 #ifndef PT_READ_U 56 # define PT_READ_U 3 /* Read word in child's U space. */ 57 #endif 58 59 #ifndef PT_WRITE_I 60 # define PT_WRITE_I 4 /* Write word in child's I space. */ 61 #endif 62 63 #ifndef PT_WRITE_D 64 # define PT_WRITE_D 5 /* Write word in child's D space. */ 65 #endif 66 67 #ifndef PT_WRITE_U 68 # define PT_WRITE_U 6 /* Write word in child's U space. */ 69 #endif 70 71 /* HP-UX doesn't define PT_CONTINUE and PT_STEP. Instead of those two 72 ptrace requests, it has PT_CONTIN, PT_CONTIN1, PT_SINGLE and 73 PT_SINGLE1. PT_CONTIN1 and PT_SINGLE1 preserve pending signals, 74 which apparently is what is wanted by the HP-UX native code. */ 75 76 #ifndef PT_CONTINUE 77 # ifdef PT_CONTIN1 78 # define PT_CONTINUE PT_CONTIN1 79 # else 80 # define PT_CONTINUE 7 /* Continue the child. */ 81 # endif 82 #endif 83 84 #ifndef PT_KILL 85 # define PT_KILL 8 /* Kill the child process. */ 86 #endif 87 88 #ifndef PT_STEP 89 # ifdef PT_SINGLE1 90 # define PT_STEP PT_SINGLE1 91 # else 92 # define PT_STEP 9 /* Single step the child. */ 93 # endif 94 #endif 95 96 /* Not all systems support attaching and detaching. */ 97 98 #ifndef PT_ATTACH 99 # ifdef PTRACE_ATTACH 100 # define PT_ATTACH PTRACE_ATTACH 101 # endif 102 #endif 103 104 #ifndef PT_DETACH 105 # ifdef PTRACE_DETACH 106 # define PT_DETACH PTRACE_DETACH 107 # endif 108 #endif 109 110 /* For systems such as HP/UX that do not provide PT_SYSCALL, define it 111 here as an alias for PT_CONTINUE. This is what the PT_SYSCALL 112 request is expected to do, in addition to stopping when entering/ 113 exiting a system call. Chances are, if the system supports system 114 call tracing, enabling this feature is probably done separately; 115 and there is probably no special request that we would be required 116 to use when resuming the execution of our program. */ 117 #ifndef PT_SYSCALL 118 # ifdef PTRACE_SYSCALL 119 # define PT_SYSCALL PTRACE_SYSCALL 120 #else 121 # define PT_SYSCALL PT_CONTINUE 122 # endif 123 #endif 124 125 /* Some systems, in particular DEC OSF/1, Digital Unix, Compaq Tru64 126 or whatever it's called these days, don't provide a prototype for 127 ptrace. Provide one to silence compiler warnings. */ 128 129 #ifndef HAVE_DECL_PTRACE 130 extern PTRACE_TYPE_RET ptrace(); 131 #endif 132 133 /* Some systems, at least AIX and HP-UX have a ptrace with five 134 arguments. Since we never use the fifth argument, define a ptrace 135 macro that calls the real ptrace with the last argument set to 136 zero. */ 137 138 #ifdef PTRACE_TYPE_ARG5 139 # define ptrace(request, pid, addr, data) ptrace (request, pid, addr, data, 0) 140 #endif 141 142 #endif /* gdb_ptrace.h */ 143