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 DECLARE_SYMBOL_VISIBILITY(name) \
39     HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR
40 #else
41 #  define DECLARE_SYMBOL_VISIBILITY(name)
42 #endif
43 
44 #define DEFINE_COMPILERRT_FUNCTION(name)                             \
45   .globl SYMBOL_NAME(name) SEPARATOR DECLARE_SYMBOL_VISIBILITY(name) \
46       SYMBOL_NAME(name)                                              \
47       :
48 
49 #define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name)                        \
50   .globl SYMBOL_NAME(name) SEPARATOR HIDDEN_DIRECTIVE SYMBOL_NAME(name) \
51       SEPARATOR SYMBOL_NAME(name)                                       \
52       :
53 
54 #define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \
55   .globl name SEPARATOR HIDDEN_DIRECTIVE name SEPARATOR name:
56 
57 #define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target)      \
58   .globl SYMBOL_NAME(name) SEPARATOR.set SYMBOL_NAME(name), \
59       SYMBOL_NAME(target) SEPARATOR
60 
61 #if defined(__ARM_EABI__)
62 #  define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name) \
63     DEFINE_COMPILERRT_FUNCTION_ALIAS(aeabi_name, name)
64 #else
65 #  define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name)
66 #endif
67 
68 #endif /* COMPILERRT_ASSEMBLY_H */
69