Add <sys/auxv.h> and getauxval.

4 files changed, 76 insertions, 2 deletions

diff --git a/misc/Makefile b/misc/Makefile
index f42347ab9d..d1c0a02e17 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -31,7 +31,7 @@ headers	:= sys/uio.h bits/uio.h sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \
 	   regexp.h bits/select.h bits/mman.h sys/xattr.h \
 	   syslog.h sys/syslog.h \
 	   bits/syslog.h bits/syslog-ldbl.h bits/syslog-path.h bits/error.h \
-	   bits/select2.h
+	   bits/select2.h bits/hwcap.h sys/auxv.h
 
 routines := brk sbrk sstk ioctl \
 	    readv writev preadv preadv64 pwritev pwritev64 \
@@ -64,7 +64,7 @@ routines := brk sbrk sstk ioctl \
 	    getloadavg getclktck \
 	    fgetxattr flistxattr fremovexattr fsetxattr getxattr \
 	    listxattr lgetxattr llistxattr lremovexattr lsetxattr \
-	    removexattr setxattr
+	    removexattr setxattr getauxval
 
 generated := tst-error1.mtrace tst-error1-mem
 
diff --git a/misc/Versions b/misc/Versions
index 3a31c7fe62..7f525eaf5e 100644
--- a/misc/Versions
+++ b/misc/Versions
@@ -146,4 +146,7 @@ libc {
   GLIBC_2.14 {
     syncfs;
   }
+  GLIBC_2.16 {
+    __getauxval; getauxval;
+  }
 }
diff --git a/misc/getauxval.c b/misc/getauxval.c
new file mode 100644
index 0000000000..a3338eedd9
--- /dev/null
+++ b/misc/getauxval.c
@@ -0,0 +1,36 @@
+/* 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)
diff --git a/misc/sys/auxv.h b/misc/sys/auxv.h
new file mode 100644
index 0000000000..a70fb37f87
--- /dev/null
+++ b/misc/sys/auxv.h
@@ -0,0 +1,35 @@
+/* Access to the auxiliary vector.
+   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/>.  */
+
+#ifndef _SYS_AUXV_H
+#define _SYS_AUXV_H 1
+
+#include <elf.h>
+#include <bits/hwcap.h>
+
+__BEGIN_DECLS
+
+/* Return the value associated with an Elf*_auxv_t type from the auxv list
+   passed to the program on startup.  If __type was not present in the auxv
+   list, returns zero.  */
+extern unsigned long getauxval (unsigned long __type)
+  __THROW __attribute_const__;
+
+__END_DECLS
+
+#endif /* sys/auxv.h */