AArch64: add support for ARM64 iOS versions of compiler-rt.

Just a dummy directory and a few sane choices in the Darwin SDK.

rdar://problem/18575597

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@219323 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 33 insertions, 0 deletions

diff --git a/lib/builtins/arm64/Makefile.mk b/lib/builtins/arm64/Makefile.mk
new file mode 100644
index 000000000..7f7e38661
--- /dev/null
+++ b/lib/builtins/arm64/Makefile.mk
@@ -0,0 +1,20 @@
+#===- lib/builtins/arm64/Makefile.mk -----------------------*- Makefile -*--===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+
+ModuleName := builtins
+SubDirs := 
+OnlyArchs := arm64 
+
+AsmSources := $(foreach file,$(wildcard $(Dir)/*.S),$(notdir $(file)))
+Sources := $(foreach file,$(wildcard $(Dir)/*.c),$(notdir $(file)))
+ObjNames := $(Sources:%.c=%.o) $(AsmSources:%.S=%.o)
+Implementation := Optimized
+
+# FIXME: use automatic dependencies?
+Dependencies := $(wildcard lib/*.h $(Dir)/*.h)
diff --git a/lib/builtins/arm64/dummy.c b/lib/builtins/arm64/dummy.c
new file mode 100644
index 000000000..76bec3048
--- /dev/null
+++ b/lib/builtins/arm64/dummy.c
@@ -0,0 +1,13 @@
+/* ===---------- dummy.c - Implements dummy function, for bringup -----------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+static void dummy(void) __attribute__((used));
+
+static void dummy(void) {}