Add __aeabi_read_tp function required for thread-local storage

Reviewed by:	cognet

2 files changed, 43 insertions, 1 deletions

diff --git a/lib/libc/arm/gen/Makefile.inc b/lib/libc/arm/gen/Makefile.inc
index b47f57d..e0ebd98 100644
--- a/lib/libc/arm/gen/Makefile.inc
+++ b/lib/libc/arm/gen/Makefile.inc
@@ -3,4 +3,4 @@
 
 SRCS+=	_ctx_start.S _setjmp.S _set_tp.c alloca.S fabs.c \
 	getcontextx.c infinity.c ldexp.c makecontext.c \
-	setjmp.S signalcontext.c sigsetjmp.S divsi3.S flt_rounds.c
+	__aeabi_read_tp.c setjmp.S signalcontext.c sigsetjmp.S divsi3.S flt_rounds.c
diff --git a/lib/libc/arm/gen/__aeabi_read_tp.c b/lib/libc/arm/gen/__aeabi_read_tp.c
new file mode 100644
index 0000000..39b5fb7
--- /dev/null
+++ b/lib/libc/arm/gen/__aeabi_read_tp.c
@@ -0,0 +1,42 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+
+#include "machine/sysarch.h"
+
+void *
+__aeabi_read_tp()
+{
+	void **_tp = (void **)ARM_TP_ADDRESS;
+
+	return (*_tp);
+}