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      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