1 /* Portable <sys/ptrace.h> 2 3 Copyright (C) 2004-2005, 2007-2012 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_PTRACE_H 21 #define GDB_PTRACE_H 22 23 /* The <sys/ptrace.h> header was introduced with 4.4BSD, and provided 24 the PT_* symbolic constants for the ptrace(2) request numbers. The 25 ptrace(2) prototype was added later to the same header on BSD. 26 SunOS and GNU/Linux have slightly different symbolic names for the 27 constants that start with PTRACE_*. System V still doesn't have 28 (and probably never will have) a <sys/ptrace.h> with symbolic 29 constants; the ptrace(2) prototype can be found in <unistd.h>. 30 Fortunately all systems use the same numerical constants for the 31 common ptrace requests. */ 32 33 #ifdef HAVE_PTRACE_H 34 # include <ptrace.h> 35 #elif defined(HAVE_SYS_PTRACE_H) 36 # include <sys/ptrace.h> 37 #endif 38 39 /* No need to include <unistd.h> since it's already included by 40 "defs.h". */ 41 42 #ifndef PT_TRACE_ME 43 # define PT_TRACE_ME 0 44 #endif 45 46 #ifndef PT_READ_I 47 # define PT_READ_I 1 /* Read word in child's I space. */ 48 #endif 49 50 #ifndef PT_READ_D 51 # define PT_READ_D 2 /* Read word in child's D space. */ 52 #endif 53 54 #ifndef PT_READ_U 55 # define PT_READ_U 3 /* Read word in child's U space. */ 56 #endif 57 58 #ifndef PT_WRITE_I 59 # define PT_WRITE_I 4 /* Write word in child's I space. */ 60 #endif 61 62 #ifndef PT_WRITE_D 63 # define PT_WRITE_D 5 /* Write word in child's D space. */ 64 #endif 65 66 #ifndef PT_WRITE_U 67 # define PT_WRITE_U 6 /* Write word in child's U space. */ 68 #endif 69 70 /* HP-UX doesn't define PT_CONTINUE and PT_STEP. Instead of those two 71 ptrace requests, it has PT_CONTIN, PT_CONTIN1, PT_SINGLE and 72 PT_SINGLE1. PT_CONTIN1 and PT_SINGLE1 preserve pending signals, 73 which apparently is what is wanted by the HP-UX native code. */ 74 75 #ifndef PT_CONTINUE 76 # ifdef PT_CONTIN1 77 # define PT_CONTINUE PT_CONTIN1 78 # else 79 # define PT_CONTINUE 7 /* Continue the child. */ 80 # endif 81 #endif 82 83 #ifndef PT_KILL 84 # define PT_KILL 8 /* Kill the child process. */ 85 #endif 86 87 #ifndef PT_STEP 88 # ifdef PT_SINGLE1 89 # define PT_STEP PT_SINGLE1 90 # else 91 # define PT_STEP 9 /* Single step the child. */ 92 # endif 93 #endif 94 95 /* Not all systems support attaching and detaching. */ 96 97 #ifndef PT_ATTACH 98 # ifdef PTRACE_ATTACH 99 # define PT_ATTACH PTRACE_ATTACH 100 # endif 101 #endif 102 103 #ifndef PT_DETACH 104 # ifdef PTRACE_DETACH 105 # define PT_DETACH PTRACE_DETACH 106 # endif 107 #endif 108 109 /* For systems such as HP/UX that do not provide PT_SYSCALL, define it 110 here as an alias for PT_CONTINUE. This is what the PT_SYSCALL 111 request is expected to do, in addition to stopping when entering/ 112 exiting a system call. Chances are, if the system supports system 113 call tracing, enabling this feature is probably done separately; 114 and there is probably no special request that we would be required 115 to use when resuming the execution of our program. */ 116 #ifndef PT_SYSCALL 117 # ifdef PTRACE_SYSCALL 118 # define PT_SYSCALL PTRACE_SYSCALL 119 #else 120 # define PT_SYSCALL PT_CONTINUE 121 # endif 122 #endif 123 124 /* Some systems, in particular DEC OSF/1, Digital Unix, Compaq Tru64 125 or whatever it's called these days, don't provide a prototype for 126 ptrace. Provide one to silence compiler warnings. */ 127 128 #ifndef HAVE_DECL_PTRACE 129 extern PTRACE_TYPE_RET ptrace(); 130 #endif 131 132 /* Some systems, at least AIX and HP-UX have a ptrace with five 133 arguments. Since we never use the fifth argument, define a ptrace 134 macro that calls the real ptrace with the last argument set to 135 zero. */ 136 137 #ifdef PTRACE_TYPE_ARG5 138 # define ptrace(request, pid, addr, data) ptrace (request, pid, addr, data, 0) 139 #endif 140 141 #endif /* gdb_ptrace.h */ 142