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/* Auxiliary vector support for GDB, the GNU debugger.
Copyright 2004 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef AUXV_H
#define AUXV_H
/* See "include/elf/common.h" for the definition of valid AT_* values. */
/* Avoid miscellaneous includes in this file, so that it can be
included by nm-*.h for the procfs_xfer_auxv decl if that is
used in NATIVE_XFER_AUXV. */
struct target_ops; /* Forward declaration. */
/* Read all the auxv data into a contiguous xmalloc'd buffer,
stored in *DATA. Return the size in bytes of this data.
If zero, there is no data and *DATA is null.
if < 0, there was an error and *DATA is null. */
extern LONGEST target_auxv_read (struct target_ops *ops, char **data);
/* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
Return 0 if *READPTR is already at the end of the buffer.
Return -1 if there is insufficient buffer for a whole entry.
Return 1 if an entry was read into *TYPEP and *VALP. */
extern int target_auxv_parse (struct target_ops *ops,
char **readptr, char *endptr,
CORE_ADDR *typep, CORE_ADDR *valp);
/* Extract the auxiliary vector entry with a_type matching MATCH.
Return zero if no such entry was found, or -1 if there was
an error getting the information. On success, return 1 after
storing the entry's value field in *VALP. */
extern int target_auxv_search (struct target_ops *ops,
CORE_ADDR match, CORE_ADDR *valp);
/* Print the contents of the target's AUXV on the specified file. */
extern int fprint_target_auxv (struct ui_file *file, struct target_ops *ops);
/* This function is called like a to_xfer_partial hook,
but must be called with TARGET_OBJECT_AUXV.
It handles access via /proc/PID/auxv, which is the common method.
This function is appropriate for doing:
#define NATIVE_XFER_AUXV procfs_xfer_auxv
for a native target that uses inftarg.c's child_xfer_partial hook. */
extern LONGEST procfs_xfer_auxv (struct target_ops *ops,
int /* enum target_object */ object,
const char *annex,
void *readbuf,
const void *writebuf,
ULONGEST offset,
LONGEST len);
#endif
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