Move original compiler-rt functions (libgcc replacement) to lib/builtins directory

llvm-svn: 201393

1 files changed, 136 insertions, 0 deletions

diff --git a/compiler-rt/lib/builtins/assembly.h b/compiler-rt/lib/builtins/assembly.h
new file mode 100644
index 00000000000..1a9f79cb632
--- /dev/null
+++ b/compiler-rt/lib/builtins/assembly.h
@@ -0,0 +1,136 @@
+/* ===-- assembly.h - compiler-rt assembler support macros -----------------===
+ *
+ *                     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.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * 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
+
+#if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__)
+#define SEPARATOR @
+#else
+#define SEPARATOR ;
+#endif
+
+#if defined(__APPLE__)
+#define HIDDEN_DIRECTIVE .private_extern
+#define LOCAL_LABEL(name) L_##name
+#define FILE_LEVEL_DIRECTIVE  .subsections_via_symbols
+#define SYMBOL_IS_FUNC(name)
+#else
+#define HIDDEN_DIRECTIVE .hidden
+#define LOCAL_LABEL(name) .L_##name
+#define FILE_LEVEL_DIRECTIVE
+#  if defined(__arm__)
+#  define SYMBOL_IS_FUNC(name) .type name, %function
+#  else
+#  define SYMBOL_IS_FUNC(name) .type name, @function
+#  endif
+#endif
+
+#if defined(__arm__)
+# ifndef __ARM_ARCH
+#  if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__) || \
+     defined (__ARM_ARCH_7R__) || defined (__ARM_ARCH_7M__) || \
+     defined (__ARM_ARCH_7EM__)
+#  define __ARM_ARCH 7
+#  endif
+# endif
+
+# ifndef __ARM_ARCH
+#  if defined (__ARM_ARCH_6__) || \
+      defined (__ARM_ARCH_6J__) || defined (__ARM_ARCH_6K__) || \
+      defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__) || \
+      defined (__ARM_ARCH_6ZM__)
+#  define __ARM_ARCH 6
+#  endif
+# endif
+
+# ifndef __ARM_ARCH
+#  if defined (__ARM_ARCH_5__) || defined (__ARM_ARCH_5T__) || \
+      defined (__ARM_ARCH_5TE__) || defined (__ARM_ARCH_5TEJ__)
+#  define __ARM_ARCH 5
+#  endif
+# endif
+
+# ifndef __ARM_ARCH
+# define __ARM_ARCH 4
+# endif
+
+# if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5
+# define ARM_HAS_BX
+# endif
+# if !defined(__ARM_FEATURE_CLZ) && \
+     (__ARM_ARCH >= 6 || (__ARM_ARCH == 5 && !defined(__ARM_ARCH_5__)))
+# define __ARM_FEATURE_CLZ
+# endif
+
+# ifdef ARM_HAS_BX
+# define JMP(r)		bx	r
+# define JMPc(r,c)	bx##c	r
+# else
+# define JMP(r)		mov	pc, r
+# define JMPc(r,c)	mov##c	pc, r
+# endif
+#endif
+
+#define GLUE2(a, b) a ## b
+#define GLUE(a, b) GLUE2(a, b)
+#define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name)
+
+#ifdef VISIBILITY_HIDDEN
+#define DECLARE_SYMBOL_VISIBILITY(name)                    \
+  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR
+#else
+#define DECLARE_SYMBOL_VISIBILITY(name)
+#endif
+
+#define DEFINE_COMPILERRT_FUNCTION(name)                   \
+  FILE_LEVEL_DIRECTIVE     SEPARATOR                       \
+  .globl SYMBOL_NAME(name) SEPARATOR                       \
+  SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR              \
+  DECLARE_SYMBOL_VISIBILITY(name)                          \
+  SYMBOL_NAME(name):
+
+#define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name)           \
+  .globl SYMBOL_NAME(name) SEPARATOR                       \
+  SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR              \
+  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR             \
+  SYMBOL_NAME(name):
+
+#define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \
+  .globl name SEPARATOR                                    \
+  SYMBOL_IS_FUNC(name) SEPARATOR                           \
+  HIDDEN_DIRECTIVE name SEPARATOR                          \
+  name:
+
+#define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target)     \
+  .globl SYMBOL_NAME(name) SEPARATOR                       \
+  SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR              \
+  .set SYMBOL_NAME(name), SYMBOL_NAME(target) SEPARATOR
+
+#if defined (__ARM_EABI__)
+# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)      \
+  DEFINE_COMPILERRT_FUNCTION_ALIAS(aeabi_name, name)
+#else
+# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)
+#endif
+
+#ifdef __ELF__
+#define END_COMPILERRT_FUNCTION(name) \
+	.size	SYMBOL_NAME(name), . - SYMBOL_NAME(name)
+#else
+#define END_COMPILERRT_FUNCTION(name)
+#endif
+
+#endif /* COMPILERRT_ASSEMBLY_H */