Viewing file:  export.h (2.2 KB) -rw-r--r--
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#ifndef __ASM_GENERIC_EXPORT_H
#define __ASM_GENERIC_EXPORT_H
#ifndef KSYM_FUNC
#define KSYM_FUNC(x) x
#endif
#ifdef CONFIG_64BIT
#define __put .quad
#ifndef KSYM_ALIGN
#define KSYM_ALIGN 8
#endif
#else
#define __put .long
#ifndef KSYM_ALIGN
#define KSYM_ALIGN 4
#endif
#endif
#ifndef KCRC_ALIGN
#define KCRC_ALIGN 4
#endif
#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
#define KSYM(name) _##name
#else
#define KSYM(name) name
#endif
/*
* note on .section use: @progbits vs %progbits nastiness doesn't matter,
* since we immediately emit into those sections anyway.
*/
.macro ___EXPORT_SYMBOL name,val,sec
#ifdef CONFIG_MODULES
.globl KSYM(__ksymtab_\name)
.section ___ksymtab\sec+\name,"a"
.balign KSYM_ALIGN
KSYM(__ksymtab_\name):
__put \val, KSYM(__kstrtab_\name)
.previous
.section __ksymtab_strings,"a"
KSYM(__kstrtab_\name):
#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
.asciz "_\name"
#else
.asciz "\name"
#endif
.previous
#ifdef CONFIG_MODVERSIONS
.section ___kcrctab\sec+\name,"a"
.balign KCRC_ALIGN
KSYM(__kcrctab_\name):
#if defined(CONFIG_MODULE_REL_CRCS)
.long KSYM(__crc_\name) - .
#else
.long KSYM(__crc_\name)
#endif
.weak KSYM(__crc_\name)
.previous
#endif
#endif
.endm
#undef __put
#if defined(__KSYM_DEPS__)
#define __EXPORT_SYMBOL(sym, val, sec) === __KSYM_##sym ===
#elif defined(CONFIG_TRIM_UNUSED_KSYMS)
#include <linux/kconfig.h>
#include <generated/autoksyms.h>
#define __EXPORT_SYMBOL(sym, val, sec) \
__cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym))
#define __cond_export_sym(sym, val, sec, conf) \
___cond_export_sym(sym, val, sec, conf)
#define ___cond_export_sym(sym, val, sec, enabled) \
__cond_export_sym_##enabled(sym, val, sec)
#define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
#define __cond_export_sym_0(sym, val, sec) /* nothing */
#else
#define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
#endif
#define EXPORT_SYMBOL(name) \
__EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)),)
#define EXPORT_SYMBOL_GPL(name) \
__EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)), _gpl)
#define EXPORT_DATA_SYMBOL(name) \
__EXPORT_SYMBOL(name, KSYM(name),)
#define EXPORT_DATA_SYMBOL_GPL(name) \
__EXPORT_SYMBOL(name, KSYM(name),_gpl)
#endif
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