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
