1 /* ===-- assembly.h - libUnwind 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 libUnwind assembler source.
11  * This file is not part of the interface of this library.
12  *
13  * ===----------------------------------------------------------------------===
14  */
15 
16 #ifndef UNWIND_ASSEMBLY_H
17 #define UNWIND_ASSEMBLY_H
18 
19 #if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__)
20 #define SEPARATOR @
21 #elif defined(__arm64__)
22 #define SEPARATOR %%
23 #else
24 #define SEPARATOR ;
25 #endif
26 
27 #if defined(__APPLE__)
28 #define HIDDEN_DIRECTIVE .private_extern
29 #else
30 #define HIDDEN_DIRECTIVE .hidden
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 #define DEFINE_LIBUNWIND_FUNCTION(name)                   \
38   .globl SYMBOL_NAME(name) SEPARATOR                      \
39   SYMBOL_NAME(name):
40 
41 #define DEFINE_LIBUNWIND_PRIVATE_FUNCTION(name)           \
42   .globl SYMBOL_NAME(name) SEPARATOR                      \
43   HIDDEN_DIRECTIVE SYMBOL_NAME(name) SEPARATOR            \
44   SYMBOL_NAME(name):
45 
46 #endif /* UNWIND_ASSEMBLY_H */
47