1 /* Auxiliary vector support for GDB, the GNU debugger.
3 Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
23 /* See "include/elf/common.h" for the definition of valid AT_* values. */
26 /* Avoid miscellaneous includes in this file, so that it can be
27 included by nm-*.h for the procfs_xfer_auxv decl if that is
28 used in NATIVE_XFER_AUXV. */
29 struct target_ops
; /* Forward declaration. */
32 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
33 Return 0 if *READPTR is already at the end of the buffer.
34 Return -1 if there is insufficient buffer for a whole entry.
35 Return 1 if an entry was read into *TYPEP and *VALP. */
36 extern int target_auxv_parse (struct target_ops
*ops
,
37 gdb_byte
**readptr
, gdb_byte
*endptr
,
38 CORE_ADDR
*typep
, CORE_ADDR
*valp
);
40 /* Extract the auxiliary vector entry with a_type matching MATCH.
41 Return zero if no such entry was found, or -1 if there was
42 an error getting the information. On success, return 1 after
43 storing the entry's value field in *VALP. */
44 extern int target_auxv_search (struct target_ops
*ops
,
45 CORE_ADDR match
, CORE_ADDR
*valp
);
47 /* Print the contents of the target's AUXV on the specified file. */
48 extern int fprint_target_auxv (struct ui_file
*file
, struct target_ops
*ops
);
51 /* This function is called like a to_xfer_partial hook,
52 but must be called with TARGET_OBJECT_AUXV.
53 It handles access via /proc/PID/auxv, which is the common method.
54 This function is appropriate for doing:
55 #define NATIVE_XFER_AUXV procfs_xfer_auxv
56 for a native target that uses inftarg.c's child_xfer_partial hook. */
58 extern LONGEST
procfs_xfer_auxv (struct target_ops
*ops
,
59 int /* enum target_object */ object
,
62 const gdb_byte
*writebuf
,
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