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authorRichard Henderson <rth@twiddle.net>2012-05-20 10:34:00 -0700
committerRichard Henderson <rth@twiddle.net>2012-05-20 10:40:35 -0700
commitc7683a6d02f3ed59f5cd119b3e8547f45a15912f (patch)
tree029e73af4f78064dc5788972d5fc3a86fc70f1d6 /misc/getauxval.c
parenta6f1845d45d0ea9303b3c71944c0a511e23bde26 (diff)
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Add <sys/auxv.h> and getauxval.
Diffstat (limited to 'misc/getauxval.c')
-rw-r--r--misc/getauxval.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/misc/getauxval.c b/misc/getauxval.c
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--- /dev/null
+++ b/misc/getauxval.c
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+/* Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/auxv.h>
+#include <ldsodefs.h>
+
+
+unsigned long
+__getauxval (unsigned long type)
+{
+  ElfW(auxv_t) *p;
+
+  if (type == AT_HWCAP)
+    return GLRO(dl_hwcap);
+
+  for (p = GLRO(dl_auxv); p->a_type != AT_NULL; p++)
+    if (p->a_type == type)
+      return p->a_un.a_val;
+  return 0;
+}
+
+weak_alias (__getauxval, getauxval)