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