1/* ===-- assembly.h - compiler-rt assembler support macros -----------------===
2 *
3 *                     The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
7 *
8 * ===----------------------------------------------------------------------===
9 *
10 * This file defines macros for use in compiler-rt assembler source.
11 * This file is not part of the interface of this library.
12 *
13 * ===----------------------------------------------------------------------===
14 */
15
16#ifndef COMPILERRT_ASSEMBLY_H
17#define COMPILERRT_ASSEMBLY_H
18
19#if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__)
20#define SEPARATOR @
21#else
22#define SEPARATOR ;
23#endif
24
25#if defined(__APPLE__)
26#define HIDDEN_DIRECTIVE .private_extern
27#define LOCAL_LABEL(name) L_##name
28#define FILE_LEVEL_DIRECTIVE  .subsections_via_symbols
29#else
30#define HIDDEN_DIRECTIVE .hidden
31#define LOCAL_LABEL(name) .L_##name
32#define FILE_LEVEL_DIRECTIVE
33#endif
34
35#define GLUE2(a, b) a ## b
36#define GLUE(a, b) GLUE2(a, b)
37#define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name)
38
39#ifdef VISIBILITY_HIDDEN
40#define DECLARE_SYMBOL_VISIBILITY(name)                    \
41  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR
42#else
43#define DECLARE_SYMBOL_VISIBILITY(name)
44#endif
45
46#define DEFINE_COMPILERRT_FUNCTION(name)                   \
47  FILE_LEVEL_DIRECTIVE     SEPARATOR                       \
48  .globl SYMBOL_NAME(name) SEPARATOR                       \
49  DECLARE_SYMBOL_VISIBILITY(name)                          \
50  SYMBOL_NAME(name):
51
52#define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name)           \
53  .globl SYMBOL_NAME(name) SEPARATOR                       \
54  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR             \
55  SYMBOL_NAME(name):
56
57#define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \
58  .globl name SEPARATOR                                    \
59  HIDDEN_DIRECTIVE name SEPARATOR                          \
60  name:
61
62#define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target)     \
63  .globl SYMBOL_NAME(name) SEPARATOR                       \
64  .set SYMBOL_NAME(name), SYMBOL_NAME(target) SEPARATOR
65
66#if defined (__ARM_EABI__)
67# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)      \
68  DEFINE_COMPILERRT_FUNCTION_ALIAS(aeabi_name, name)
69#else
70# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)
71#endif
72
73#endif /* COMPILERRT_ASSEMBLY_H */
74