seL4/include/machine/assembler.h
TrusthworthySystems 91b7da8625 Release snapshot
2014-07-18 05:03:59 +10:00

46 lines
1 KiB
C

/*
* Copyright 2014, General Dynamics C4 Systems
*
* This software may be distributed and modified according to the terms of
* the GNU General Public License version 2. Note that NO WARRANTY is provided.
* See "LICENSE_GPLv2.txt" for details.
*
* @TAG(GD_GPL)
*/
#ifndef __MACHINE_ASSEMBLER_H__
#define __MACHINE_ASSEMBLER_H__
/* This file contains useful macros for assembly code. */
#ifdef __ASSEMBLER__
/*
* Use BEGIN_FUNC(), END_FUNC() around assembly functions to annotate them
* correctly to the assembler.
*/
#define BEGIN_FUNC(_name) \
.global _name ; \
.type _name, %function ; \
_name:
#define END_FUNC(_name) \
.size _name, .-_name
/*
* BEGIN_FUNC_STATIC() and END_FUNC_STATIC() do as above, but without making a
* global declaration. (c.f. static functions in C).
*/
#define BEGIN_FUNC_STATIC(_name) \
.type _name, %function ; \
_name:
#define END_FUNC_STATIC(_name) \
.size _name, .-_name
#else /* !__ASSEMBLER__ */
#warning "Including assembly-specific header in C code"
#endif
#endif /* __MACHINE_ASSEMBLER_H__ */