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authorRoland McGrath <roland@gnu.org>2004-02-01 22:35:24 +0000
committerRoland McGrath <roland@gnu.org>2004-02-01 22:35:24 +0000
commit14ed0a8b1b61f7626134f5490b89dffa564a26bc (patch)
treea6d771c5fe9355f66a9ae823ceef071a49443c7e /gdb/auxv.h
parent90c119f48c5fa7d476db4ef678648fd66abbd2ed (diff)
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2004-01-28 Roland McGrath <roland@redhat.com>
* auxv.h: New file. * auxv.c: New file. * Makefile.in (auxv_h): New variable. (COMMON_OBS): Add auxv.o here. (auxv.o): New target.
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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