projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 22823ab4 AV |
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 | |
| 22823ab4 AV |
12 | #else |
| 13 | #define __put .long | |
| 14 | #ifndef KSYM_ALIGN | |
| 15 | #define KSYM_ALIGN 4 | |
| 16 | #endif | |
| 71810db2 | 17 | #endif |
| 22823ab4 AV |
18 | #ifndef KCRC_ALIGN |
| 19 | #define KCRC_ALIGN 4 | |
| 20 | #endif | |
| 22823ab4 AV |
21 | |
| 22 | #ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX | |
| 23 | #define KSYM(name) _##name | |
| 24 | #else | |
| 25 | #define KSYM(name) name | |
| 26 | #endif | |
| 27 | ||
| 28 | /* | |
| 29 | * note on .section use: @progbits vs %progbits nastiness doesn't matter, | |
| 30 | * since we immediately emit into those sections anyway. | |
| 31 | */ | |
| 32 | .macro ___EXPORT_SYMBOL name,val,sec | |
| 33 | #ifdef CONFIG_MODULES | |
| 34 | .globl KSYM(__ksymtab_\name) | |
| 35 | .section ___ksymtab\sec+\name,"a" | |
| 36 | .balign KSYM_ALIGN | |
| 37 | KSYM(__ksymtab_\name): | |
| 38 | __put \val, KSYM(__kstrtab_\name) | |
| 39 | .previous | |
| 40 | .section __ksymtab_strings,"a" | |
| 41 | KSYM(__kstrtab_\name): | |
| 42 | #ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX | |
| 43 | .asciz "_\name" | |
| 44 | #else | |
| 45 | .asciz "\name" | |
| 46 | #endif | |
| 47 | .previous | |
| 48 | #ifdef CONFIG_MODVERSIONS | |
| 49 | .section ___kcrctab\sec+\name,"a" | |
| 50 | .balign KCRC_ALIGN | |
| 51 | KSYM(__kcrctab_\name): | |
| 71810db2 AB |
52 | #if defined(CONFIG_MODULE_REL_CRCS) |
| 53 | .long KSYM(__crc_\name) - . | |
| 54 | #else | |
| 55 | .long KSYM(__crc_\name) | |
| 56 | #endif | |
| 22823ab4 AV |
57 | .weak KSYM(__crc_\name) |
| 58 | .previous | |
| 59 | #endif | |
| 60 | #endif | |
| 61 | .endm | |
| 62 | #undef __put | |
| 63 | ||
| 64 | #if defined(__KSYM_DEPS__) | |
| 65 | ||
| 66 | #define __EXPORT_SYMBOL(sym, val, sec) === __KSYM_##sym === | |
| 67 | ||
| 68 | #elif defined(CONFIG_TRIM_UNUSED_KSYMS) | |
| 69 | ||
| 70 | #include <linux/kconfig.h> | |
| 71 | #include <generated/autoksyms.h> | |
| 72 | ||
| 73 | #define __EXPORT_SYMBOL(sym, val, sec) \ | |
| c0a0aba8 | 74 | __cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym)) |
| 22823ab4 AV |
75 | #define __cond_export_sym(sym, val, sec, conf) \ |
| 76 | ___cond_export_sym(sym, val, sec, conf) | |
| 77 | #define ___cond_export_sym(sym, val, sec, enabled) \ | |
| 78 | __cond_export_sym_##enabled(sym, val, sec) | |
| 79 | #define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec | |
| 80 | #define __cond_export_sym_0(sym, val, sec) /* nothing */ | |
| 81 | ||
| 82 | #else | |
| 83 | #define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec | |
| 84 | #endif | |
| 85 | ||
| 86 | #define EXPORT_SYMBOL(name) \ | |
| 87 | __EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)),) | |
| 88 | #define EXPORT_SYMBOL_GPL(name) \ | |
| 89 | __EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)), _gpl) | |
| 90 | #define EXPORT_DATA_SYMBOL(name) \ | |
| 91 | __EXPORT_SYMBOL(name, KSYM(name),) | |
| 92 | #define EXPORT_DATA_SYMBOL_GPL(name) \ | |
| 93 | __EXPORT_SYMBOL(name, KSYM(name),_gpl) | |
| 94 | ||
| 95 | #endif |