Upgrade GDB from 7.4.1 to 7.6.1 on the vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / gdb_ptrace.h
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1/* Portable <sys/ptrace.h>
2
ef5ccd6c 3 Copyright (C) 2004-2013 Free Software Foundation, Inc.
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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
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117# ifdef PTRACE_SYSCALL
118# define PT_SYSCALL PTRACE_SYSCALL
119#else
120# define PT_SYSCALL PT_CONTINUE
121# endif
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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
129extern 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 */