Add assembly.h for use in .S files.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@85263 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/assembly.h b/lib/assembly.h
new file mode 100644
index 000000000..808f7e404
--- /dev/null
+++ b/lib/assembly.h
@@ -0,0 +1,42 @@
+/* ===-- assembly.h - compiler-rt assembler support macros -----------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file defines macros for use in compiler-rt assembler source.
+ * This file is not part of the interface of this library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#ifndef COMPILERRT_ASSEMBLY_H
+#define COMPILERRT_ASSEMBLY_H
+
+// Define SYMBOL_NAME to add the appropriate symbol prefix; we can't use
+// USER_LABEL_PREFIX directly because of cpp brokenness.
+#if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__)
+
+#define SYMBOL_NAME(name) name
+#define SEPARATOR @
+
+#else
+
+#define SYMBOL_NAME(name) _##name
+#define SEPARATOR ;
+
+#endif
+
+#define DEFINE_COMPILERRT_FUNCTION(name) \
+  .globl SYMBOL_NAME(name) SEPARATOR     \
+  SYMBOL_NAME(name):
+
+#define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name) \
+  .globl SYMBOL_NAME(name) SEPARATOR             \
+  .private_extern SYMBOL_NAME(name) SEPARATOR    \
+  SYMBOL_NAME(name):
+
+#endif /* COMPILERRT_ASSEMBLY_H */