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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Please do not include this explicitly.
* This is used by C files generated by modpost.
*/
#ifndef __LINUX_EXPORT_INTERNAL_H__
#define __LINUX_EXPORT_INTERNAL_H__
#include <linux/compiler.h>
#include <linux/types.h>
#if defined(CONFIG_HAVE_ARCH_PREL32_RELOCATIONS)
/*
* relative reference: this reduces the size by half on 64-bit architectures,
* and eliminates the need for absolute relocations that require runtime
* processing on relocatable kernels.
*/
#define __KSYM_ALIGN ".balign 4"
#define __KSYM_REF(sym) ".long " #sym "- ."
#elif defined(CONFIG_64BIT)
#define __KSYM_ALIGN ".balign 8"
#define __KSYM_REF(sym) ".quad " #sym
#else
#define __KSYM_ALIGN ".balign 4"
#define __KSYM_REF(sym) ".long " #sym
#endif
/*
* For every exported symbol, do the following:
*
* - Put the name of the symbol and namespace (empty string "" for none) in
* __ksymtab_strings.
* - Place a struct kernel_symbol entry in the __ksymtab section.
*
* Note on .section use: we specify progbits since usage of the "M" (SHF_MERGE)
* section flag requires it. Use '%progbits' instead of '@progbits' since the
* former apparently works on all arches according to the binutils source.
*/
#define __KSYMTAB(name, sym, sec, ns) \
asm(" .section \"__ksymtab_strings\",\"aMS\",%progbits,1" "\n" \
"__kstrtab_" #name ":" "\n" \
" .asciz \"" #name "\"" "\n" \
"__kstrtabns_" #name ":" "\n" \
" .asciz \"" ns "\"" "\n" \
" .previous" "\n" \
" .section \"___ksymtab" sec "+" #name "\", \"a\"" "\n" \
__KSYM_ALIGN "\n" \
"__ksymtab_" #name ":" "\n" \
__KSYM_REF(sym) "\n" \
__KSYM_REF(__kstrtab_ ##name) "\n" \
__KSYM_REF(__kstrtabns_ ##name) "\n" \
" .previous" "\n" \
)
#if defined(CONFIG_PARISC) && defined(CONFIG_64BIT)
#define KSYM_FUNC(name) P%name
#else
#define KSYM_FUNC(name) name
#endif
#define KSYMTAB_FUNC(name, sec, ns) __KSYMTAB(name, KSYM_FUNC(name), sec, ns)
#define KSYMTAB_DATA(name, sec, ns) __KSYMTAB(name, name, sec, ns)
#define SYMBOL_CRC(sym, crc, sec) \
asm(".section \"___kcrctab" sec "+" #sym "\",\"a\"" "\n" \
".balign 4" "\n" \
"__crc_" #sym ":" "\n" \
".long " #crc "\n" \
".previous" "\n")
#endif /* __LINUX_EXPORT_INTERNAL_H__ */