1 /* Auxiliary vector support for GDB, the GNU debugger.
3 Copyright (C) 2004 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 2 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, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
25 /* See "include/elf/common.h" for the definition of valid AT_* values. */
28 /* Avoid miscellaneous includes in this file, so that it can be
29 included by nm-*.h for the procfs_xfer_auxv decl if that is
30 used in NATIVE_XFER_AUXV. */
31 struct target_ops
; /* Forward declaration. */
34 /* Read all the auxv data into a contiguous xmalloc'd buffer,
35 stored in *DATA. Return the size in bytes of this data.
36 If zero, there is no data and *DATA is null.
37 if < 0, there was an error and *DATA is null. */
38 extern LONGEST
target_auxv_read (struct target_ops
*ops
, gdb_byte
**data
);
40 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
41 Return 0 if *READPTR is already at the end of the buffer.
42 Return -1 if there is insufficient buffer for a whole entry.
43 Return 1 if an entry was read into *TYPEP and *VALP. */
44 extern int target_auxv_parse (struct target_ops
*ops
,
45 gdb_byte
**readptr
, gdb_byte
*endptr
,
46 CORE_ADDR
*typep
, CORE_ADDR
*valp
);
48 /* Extract the auxiliary vector entry with a_type matching MATCH.
49 Return zero if no such entry was found, or -1 if there was
50 an error getting the information. On success, return 1 after
51 storing the entry's value field in *VALP. */
52 extern int target_auxv_search (struct target_ops
*ops
,
53 CORE_ADDR match
, CORE_ADDR
*valp
);
55 /* Print the contents of the target's AUXV on the specified file. */
56 extern int fprint_target_auxv (struct ui_file
*file
, struct target_ops
*ops
);
59 /* This function is called like a to_xfer_partial hook,
60 but must be called with TARGET_OBJECT_AUXV.
61 It handles access via /proc/PID/auxv, which is the common method.
62 This function is appropriate for doing:
63 #define NATIVE_XFER_AUXV procfs_xfer_auxv
64 for a native target that uses inftarg.c's child_xfer_partial hook. */
66 extern LONGEST
procfs_xfer_auxv (struct target_ops
*ops
,
67 int /* enum target_object */ object
,
70 const gdb_byte
*writebuf
,
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