Hook up LLVM compiler-rt in the build system

This patch enables compiler-rt for the AArch32 target.  The code is
not used for AArch64 as the architecture supports the 64-bit division
and modulo operations natively.

Change-Id: I1703a92872b0bb56ac0b98c67193830683963b13
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

2 files changed, 40 insertions, 9 deletions

diff --git a/lib/compiler-rt/builtins/int_lib.h b/lib/compiler-rt/builtins/int_lib.h
index 8a202dde..eb5503f9 100644
--- a/lib/compiler-rt/builtins/int_lib.h
+++ b/lib/compiler-rt/builtins/int_lib.h
@@ -13,6 +13,11 @@
  * ===----------------------------------------------------------------------===
  */
 
+/*
+ * Portions copyright (c) 2017, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
 #ifndef INT_LIB_H
 #define INT_LIB_H
 
@@ -54,21 +59,13 @@
 #define UNUSED __attribute__((unused))
 #endif
 
-#if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE))
 /*
  * Kernel and boot environment can't use normal headers,
  * so use the equivalent system headers.
  */
-#  include <machine/limits.h>
+#  include <sys/limits.h>
 #  include <sys/stdint.h>
 #  include <sys/types.h>
-#else
-/* Include the standard compiler builtin headers we use functionality from. */
-#  include <limits.h>
-#  include <stdint.h>
-#  include <stdbool.h>
-#  include <float.h>
-#endif
 
 /* Include the commonly used internal type definitions. */
 #include "int_types.h"
diff --git a/lib/compiler-rt/compiler-rt.mk b/lib/compiler-rt/compiler-rt.mk
new file mode 100644
index 00000000..3bdd3190
--- /dev/null
+++ b/lib/compiler-rt/compiler-rt.mk
@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+#
+# 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.
+#
+# Neither the name of ARM nor the names of its contributors may be used
+# to endorse or promote products derived from this software without specific
+# prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+#
+
+ifeq (${ARCH},aarch32)
+COMPILER_RT_SRCS	:=	lib/compiler-rt/builtins/arm/aeabi_uldivmod.S	\
+				lib/compiler-rt/builtins/udivmoddi4.c
+endif