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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)