/* ===-- assembly.h - compiler-rt assembler support macros -----------------=== * * The LLVM Compiler Infrastructure * * This file is dual licensed under the MIT and the University of Illinois Open * Source Licenses. See LICENSE.TXT for details. * * ===----------------------------------------------------------------------=== * * This file defines macros for use in compiler-rt assembler source. * This file is not part of the interface of this library. * * ===----------------------------------------------------------------------=== */ #ifndef COMPILERRT_ASSEMBLY_H #define COMPILERRT_ASSEMBLY_H #if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__) #define SEPARATOR @ #else #define SEPARATOR ; #endif #if defined(__APPLE__) #define HIDDEN(name) .private_extern name #define LOCAL_LABEL(name) L_##name // tell linker it can break up file at label boundaries #define FILE_LEVEL_DIRECTIVE .subsections_via_symbols #define SYMBOL_IS_FUNC(name) #elif defined(__ELF__) #define HIDDEN(name) .hidden name #define LOCAL_LABEL(name) .L_##name #define FILE_LEVEL_DIRECTIVE #if defined(__arm__) #define SYMBOL_IS_FUNC(name) .type name,%function #else #define SYMBOL_IS_FUNC(name) .type name,@function #endif #else #define HIDDEN_DIRECTIVE(name) #define LOCAL_LABEL(name) .L ## name #define SYMBOL_IS_FUNC(name) \ .def name SEPARATOR \ .scl 2 SEPARATOR \ .type 32 SEPARATOR \ .endef #define FILE_LEVEL_DIRECTIVE #endif #if defined(__arm__) #ifndef __ARM_ARCH #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \ defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || \ defined(__ARM_ARCH_7EM__) #define __ARM_ARCH 7 #endif #endif #ifndef __ARM_ARCH #if defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \ defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || \ defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6ZM__) #define __ARM_ARCH 6 #endif #endif #ifndef __ARM_ARCH #if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || \ defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__) #define __ARM_ARCH 5 #endif #endif #ifndef __ARM_ARCH #define __ARM_ARCH 4 #endif #if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5 #define ARM_HAS_BX #endif #if !defined(__ARM_FEATURE_CLZ) && \ (__ARM_ARCH >= 6 || (__ARM_ARCH == 5 && !defined(__ARM_ARCH_5__))) #define __ARM_FEATURE_CLZ #endif #ifdef ARM_HAS_BX #define JMP(r) bx r #define JMPc(r, c) bx##c r #else #define JMP(r) mov pc, r #define JMPc(r, c) mov##c pc, r #endif #endif #define GLUE2(a, b) a##b #define GLUE(a, b) GLUE2(a, b) #define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name) #ifdef VISIBILITY_HIDDEN #define DECLARE_SYMBOL_VISIBILITY(name) \ HIDDEN(SYMBOL_NAME(name)) SEPARATOR #else #define DECLARE_SYMBOL_VISIBILITY(name) #endif #define DEFINE_COMPILERRT_FUNCTION(name) \ FILE_LEVEL_DIRECTIVE SEPARATOR \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ DECLARE_SYMBOL_VISIBILITY(name) \ SYMBOL_NAME(name): #define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name) \ FILE_LEVEL_DIRECTIVE SEPARATOR \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ HIDDEN(SYMBOL_NAME(name)) SEPARATOR \ SYMBOL_NAME(name): #define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \ .globl name SEPARATOR \ SYMBOL_IS_FUNC(name) SEPARATOR \ HIDDEN(name) SEPARATOR \ name: #define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target) \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ .set SYMBOL_NAME(name), SYMBOL_NAME(target) SEPARATOR #if defined(__ARM_EABI__) #define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name) \ DEFINE_COMPILERRT_FUNCTION_ALIAS(aeabi_name, name) #else #define DEFINE_AEABI_FUNCTION_ALIAS(aeabi_name, name) #endif #ifdef __ELF__ #define END_COMPILERRT_FUNCTION(name) \ .size SYMBOL_NAME(name), . - SYMBOL_NAME(name) #else #define END_COMPILERRT_FUNCTION(name) #endif #endif /* COMPILERRT_ASSEMBLY_H */