add getauxval() implementation

2 files changed, 63 insertions, 0 deletions

diff --git a/libc/misc/auxvt/Makefile.in b/libc/misc/auxvt/Makefile.in
new file mode 100644
index 000000000..142ade10c
--- /dev/null
+++ b/libc/misc/auxvt/Makefile.in
@@ -0,0 +1,23 @@
+# Makefile for uClibc
+#
+# Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
+#
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
+
+subdirs += libc/misc/auxvt
+
+CSRC-y := getauxval.c
+
+MISC_AUXVT_DIR := $(top_srcdir)libc/misc/auxvt
+MISC_AUXVT_OUT := $(top_builddir)libc/misc/auxvt
+
+MISC_AUXVT_SRC := $(patsubst %.c,$(MISC_AUXVT_DIR)/%.c,$(CSRC-y))
+MISC_AUXVT_OBJ := $(patsubst %.c,$(MISC_AUXVT_OUT)/%.o,$(CSRC-y))
+
+libc-y += $(MISC_AUXVT_OBJ)
+
+objclean-y += CLEAN_libc/misc/auxvt
+
+CLEAN_libc/misc/auxvt:
+	$(do_rm) $(addprefix $(MISC_AUXVT_OUT)/*., o os)
diff --git a/libc/misc/auxvt/getauxval.c b/libc/misc/auxvt/getauxval.c
new file mode 100755
index 000000000..b4e621301
--- /dev/null
+++ b/libc/misc/auxvt/getauxval.c
@@ -0,0 +1,40 @@
+/*  Copyright (C) 2022     Ramin Seyed Moussavi
+ *  An getauxval() function compatible with the glibc auxv.h
+ *  that is used by uClibc-ng.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This 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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, see
+ *  <http://www.gnu.org/licenses/>.
+ */
+
+#include "errno.h"
+#include "ldso.h"
+#include "sys/auxv.h"
+
+
+unsigned long int getauxval (unsigned long int __type)
+{
+	if ( __type >= AUX_MAX_AT_ID ){
+		__set_errno (ENOENT);
+		return 0;
+	}
+	
+	if ( _dl_auxvt[__type].a_type == __type){
+		return _dl_auxvt[__type].a_un.a_val;
+	}
+
+	__set_errno (ENOENT);
+	return 0;
+}
+
+