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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 | |
22823ab4 AV |
8 | #ifndef KSYM_ALIGN |
9 | #define KSYM_ALIGN 8 | |
10 | #endif | |
22823ab4 | 11 | #else |
22823ab4 AV |
12 | #ifndef KSYM_ALIGN |
13 | #define KSYM_ALIGN 4 | |
14 | #endif | |
71810db2 | 15 | #endif |
22823ab4 AV |
16 | #ifndef KCRC_ALIGN |
17 | #define KCRC_ALIGN 4 | |
18 | #endif | |
22823ab4 | 19 | |
7290d580 AB |
20 | .macro __put, val, name |
21 | #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS | |
22 | .long \val - ., \name - . | |
23 | #elif defined(CONFIG_64BIT) | |
24 | .quad \val, \name | |
25 | #else | |
26 | .long \val, \name | |
27 | #endif | |
28 | .endm | |
29 | ||
22823ab4 AV |
30 | /* |
31 | * note on .section use: @progbits vs %progbits nastiness doesn't matter, | |
32 | * since we immediately emit into those sections anyway. | |
33 | */ | |
34 | .macro ___EXPORT_SYMBOL name,val,sec | |
35 | #ifdef CONFIG_MODULES | |
94e58e0a | 36 | .globl __ksymtab_\name |
22823ab4 AV |
37 | .section ___ksymtab\sec+\name,"a" |
38 | .balign KSYM_ALIGN | |
94e58e0a MY |
39 | __ksymtab_\name: |
40 | __put \val, __kstrtab_\name | |
22823ab4 AV |
41 | .previous |
42 | .section __ksymtab_strings,"a" | |
94e58e0a | 43 | __kstrtab_\name: |
22823ab4 | 44 | .asciz "\name" |
22823ab4 AV |
45 | .previous |
46 | #ifdef CONFIG_MODVERSIONS | |
47 | .section ___kcrctab\sec+\name,"a" | |
48 | .balign KCRC_ALIGN | |
94e58e0a | 49 | __kcrctab_\name: |
71810db2 | 50 | #if defined(CONFIG_MODULE_REL_CRCS) |
94e58e0a | 51 | .long __crc_\name - . |
71810db2 | 52 | #else |
94e58e0a | 53 | .long __crc_\name |
71810db2 | 54 | #endif |
94e58e0a | 55 | .weak __crc_\name |
22823ab4 AV |
56 | .previous |
57 | #endif | |
58 | #endif | |
59 | .endm | |
60 | #undef __put | |
61 | ||
62 | #if defined(__KSYM_DEPS__) | |
63 | ||
64 | #define __EXPORT_SYMBOL(sym, val, sec) === __KSYM_##sym === | |
65 | ||
66 | #elif defined(CONFIG_TRIM_UNUSED_KSYMS) | |
67 | ||
68 | #include <linux/kconfig.h> | |
69 | #include <generated/autoksyms.h> | |
70 | ||
71 | #define __EXPORT_SYMBOL(sym, val, sec) \ | |
c0a0aba8 | 72 | __cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym)) |
22823ab4 AV |
73 | #define __cond_export_sym(sym, val, sec, conf) \ |
74 | ___cond_export_sym(sym, val, sec, conf) | |
75 | #define ___cond_export_sym(sym, val, sec, enabled) \ | |
76 | __cond_export_sym_##enabled(sym, val, sec) | |
77 | #define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec | |
78 | #define __cond_export_sym_0(sym, val, sec) /* nothing */ | |
79 | ||
80 | #else | |
81 | #define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec | |
82 | #endif | |
83 | ||
84 | #define EXPORT_SYMBOL(name) \ | |
94e58e0a | 85 | __EXPORT_SYMBOL(name, KSYM_FUNC(name),) |
22823ab4 | 86 | #define EXPORT_SYMBOL_GPL(name) \ |
94e58e0a | 87 | __EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl) |
22823ab4 | 88 | #define EXPORT_DATA_SYMBOL(name) \ |
94e58e0a | 89 | __EXPORT_SYMBOL(name, name,) |
22823ab4 | 90 | #define EXPORT_DATA_SYMBOL_GPL(name) \ |
94e58e0a | 91 | __EXPORT_SYMBOL(name, name,_gpl) |
22823ab4 AV |
92 | |
93 | #endif |