1 #ifndef __ASM_GENERIC_EXPORT_H 2 #define __ASM_GENERIC_EXPORT_H 3 4 #ifndef KSYM_FUNC 5 #define KSYM_FUNC(x) x 6 #endif 7 #ifdef CONFIG_64BIT 8 #define __put .quad 9 #ifndef KSYM_ALIGN 10 #define KSYM_ALIGN 8 11 #endif 12 #else 13 #define __put .long 14 #ifndef KSYM_ALIGN 15 #define KSYM_ALIGN 4 16 #endif 17 #endif 18 #ifndef KCRC_ALIGN 19 #define KCRC_ALIGN 4 20 #endif 21 22 /* 23 * note on .section use: @progbits vs %progbits nastiness doesn't matter, 24 * since we immediately emit into those sections anyway. 25 */ 26 .macro ___EXPORT_SYMBOL name,val,sec 27 #ifdef CONFIG_MODULES 28 .globl __ksymtab_\name 29 .section ___ksymtab\sec+\name,"a" 30 .balign KSYM_ALIGN 31 __ksymtab_\name: 32 __put \val, __kstrtab_\name 33 .previous 34 .section __ksymtab_strings,"a" 35 __kstrtab_\name: 36 .asciz "\name" 37 .previous 38 #ifdef CONFIG_MODVERSIONS 39 .section ___kcrctab\sec+\name,"a" 40 .balign KCRC_ALIGN 41 __kcrctab_\name: 42 #if defined(CONFIG_MODULE_REL_CRCS) 43 .long __crc_\name - . 44 #else 45 .long __crc_\name 46 #endif 47 .weak __crc_\name 48 .previous 49 #endif 50 #endif 51 .endm 52 #undef __put 53 54 #if defined(__KSYM_DEPS__) 55 56 #define __EXPORT_SYMBOL(sym, val, sec) === __KSYM_##sym === 57 58 #elif defined(CONFIG_TRIM_UNUSED_KSYMS) 59 60 #include <linux/kconfig.h> 61 #include <generated/autoksyms.h> 62 63 #define __EXPORT_SYMBOL(sym, val, sec) \ 64 __cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym)) 65 #define __cond_export_sym(sym, val, sec, conf) \ 66 ___cond_export_sym(sym, val, sec, conf) 67 #define ___cond_export_sym(sym, val, sec, enabled) \ 68 __cond_export_sym_##enabled(sym, val, sec) 69 #define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec 70 #define __cond_export_sym_0(sym, val, sec) /* nothing */ 71 72 #else 73 #define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec 74 #endif 75 76 #define EXPORT_SYMBOL(name) \ 77 __EXPORT_SYMBOL(name, KSYM_FUNC(name),) 78 #define EXPORT_SYMBOL_GPL(name) \ 79 __EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl) 80 #define EXPORT_DATA_SYMBOL(name) \ 81 __EXPORT_SYMBOL(name, name,) 82 #define EXPORT_DATA_SYMBOL_GPL(name) \ 83 __EXPORT_SYMBOL(name, name,_gpl) 84 85 #endif 86