name : export-internal.h /* 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__ */