assembly.h revision 296373
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