assembly.h revision 222656 
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#else
29#define HIDDEN_DIRECTIVE .hidden
30#define LOCAL_LABEL(name) .L_##name
31#endif
32
33#define GLUE2(a, b) a ## b
34#define GLUE(a, b) GLUE2(a, b)
35#define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name)
36
37#ifdef VISIBILITY_HIDDEN
38#define DEFINE_COMPILERRT_FUNCTION(name)                   \
39  .globl SYMBOL_NAME(name) SEPARATOR                       \
40  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR             \
41  SYMBOL_NAME(name):
42#else
43#define DEFINE_COMPILERRT_FUNCTION(name)                   \
44  .globl SYMBOL_NAME(name) SEPARATOR                       \
45  SYMBOL_NAME(name):
46#endif
47
48#define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name)           \
49  .globl SYMBOL_NAME(name) SEPARATOR                       \
50  HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR             \
51  SYMBOL_NAME(name):
52
53#define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \
54  .globl name SEPARATOR                                    \
55  HIDDEN_DIRECTIVE name SEPARATOR                          \
56  name:
57
58#define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target)     \
59  .globl SYMBOL_NAME(name) SEPARATOR                       \
60  .set SYMBOL_NAME(name), SYMBOL_NAME(target) SEPARATOR
61
62#if defined (__ARM_EABI__)
63# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)      \
64  DEFINE_COMPILERRT_FUNCTION_ALIAS(aeabi_name, name)
65#else
66# define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)
67#endif
68
69#endif /* COMPILERRT_ASSEMBLY_H */
70