170 lines
5.7 KiB
C
170 lines
5.7 KiB
C
|
/* ===-- 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)
|
||
|
|
#define CONST_SECTION .const
|
||
|
|
|
||
|
|
#define NO_EXEC_STACK_DIRECTIVE
|
||
|
|
|
||
|
|
#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
|
||
|
|
#define CONST_SECTION .section .rodata
|
||
|
|
|
||
|
|
#if defined(__GNU__) || defined(__ANDROID__) || defined(__FreeBSD__)
|
||
|
|
#define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits
|
||
|
|
#else
|
||
|
|
#define NO_EXEC_STACK_DIRECTIVE
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#else // !__APPLE__ && !__ELF__
|
||
|
|
|
||
|
|
#define HIDDEN(name)
|
||
|
|
#define LOCAL_LABEL(name) .L ## name
|
||
|
|
#define FILE_LEVEL_DIRECTIVE
|
||
|
|
#define SYMBOL_IS_FUNC(name) \
|
||
|
|
.def name SEPARATOR \
|
||
|
|
.scl 2 SEPARATOR \
|
||
|
|
.type 32 SEPARATOR \
|
||
|
|
.endef
|
||
|
|
#define CONST_SECTION .section .rdata,"rd"
|
||
|
|
|
||
|
|
#define NO_EXEC_STACK_DIRECTIVE
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(__arm__)
|
||
|
|
#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
|
||
|
|
|
||
|
|
// pop {pc} can't switch Thumb mode on ARMv4T
|
||
|
|
#if __ARM_ARCH >= 5
|
||
|
|
#define POP_PC() pop {pc}
|
||
|
|
#else
|
||
|
|
#define POP_PC() \
|
||
|
|
pop {ip}; \
|
||
|
|
JMP(ip)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __ARM_ARCH_ISA_THUMB == 2
|
||
|
|
#define IT(cond) it cond
|
||
|
|
#define ITT(cond) itt cond
|
||
|
|
#else
|
||
|
|
#define IT(cond)
|
||
|
|
#define ITT(cond)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __ARM_ARCH_ISA_THUMB == 2
|
||
|
|
#define WIDE(op) op.w
|
||
|
|
#else
|
||
|
|
#define WIDE(op) op
|
||
|
|
#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_THUMB_FUNCTION(name) \
|
||
|
|
FILE_LEVEL_DIRECTIVE SEPARATOR \
|
||
|
|
.globl SYMBOL_NAME(name) SEPARATOR \
|
||
|
|
SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \
|
||
|
|
DECLARE_SYMBOL_VISIBILITY(name) SEPARATOR \
|
||
|
|
.thumb_func SEPARATOR \
|
||
|
|
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 \
|
||
|
|
DECLARE_SYMBOL_VISIBILITY(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 */
|