305f5ca448
- This fixes dangerous relocations when building on host systems with newer GLIBC. - The error log is as below: WARNING: EXPORT symbol "d_lookup" [vmlinux] version generation failed, symbol will not be versioned. WARNING: EXPORT symbol "change_bit" [vmlinux] version generation failed, symbol will not be versioned. WARNING: EXPORT symbol "__page_symlink" [vmlinux] version generation failed, symbol will not be versioned. aarch64-elf-ld: init/main.o: relocation R_AARCH64_ABS32 against `__crc_is_inline' can not be used when making a shared object aarch64-elf-ld: init/version.o: relocation R_AARCH64_ABS32 against `__crc_init_uts_ns' can not be used when making a shared object aarch64-elf-ld: init/do_mounts.o: relocation R_AARCH64_ABS32 against `__crc_name_to_dev_t' can not be used when making a shared object aarch64-elf-ld: init/init_task.o: relocation R_AARCH64_ABS32 against `__crc_init_task' can not be used when making a shared object Change-Id: I6d9d1d0702d92de687b82e74c1895b7cd0423736 Signed-off-by: Cyber Knight <cyberknight755@gmail.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
#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 8
|
|
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
|