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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 | |
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 |