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#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
37KSYM(__ksymtab_\name):
38	__put \val, KSYM(__kstrtab_\name)
39	.previous
40	.section __ksymtab_strings,"a"
41KSYM(__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
51KSYM(__kcrctab_\name):
52#if defined(CONFIG_MODULE_REL_CRCS)
53	.long KSYM(__crc_\name) - .
54#else
55	.long KSYM(__crc_\name)
56#endif
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)				\
 
74	__cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym))
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

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2#ifndef __ASM_GENERIC_EXPORT_H
 3#define __ASM_GENERIC_EXPORT_H
 4
 5#ifndef KSYM_FUNC
 6#define KSYM_FUNC(x) x
 7#endif
 8#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
 9#define KSYM_ALIGN 4
10#elif defined(CONFIG_64BIT)
11#define KSYM_ALIGN 8
 
12#else
 
 
13#define KSYM_ALIGN 4
14#endif
 
15#ifndef KCRC_ALIGN
16#define KCRC_ALIGN 4
17#endif
18
19.macro __put, val, name
20#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
21	.long	\val - ., \name - ., 0
22#elif defined(CONFIG_64BIT)
23	.quad	\val, \name, 0
24#else
25	.long	\val, \name, 0
26#endif
27.endm
28
29/*
30 * note on .section use: we specify progbits since usage of the "M" (SHF_MERGE)
31 * section flag requires it. Use '%progbits' instead of '@progbits' since the
32 * former apparently works on all arches according to the binutils source.
33 */
34
35.macro ___EXPORT_SYMBOL name,val,sec
36#ifdef CONFIG_MODULES
 
37	.section ___ksymtab\sec+\name,"a"
38	.balign KSYM_ALIGN
39__ksymtab_\name:
40	__put \val, __kstrtab_\name
41	.previous
42	.section __ksymtab_strings,"aMS",%progbits,1
43__kstrtab_\name:
 
 
 
44	.asciz "\name"
 
45	.previous
46#ifdef CONFIG_MODVERSIONS
47	.section ___kcrctab\sec+\name,"a"
48	.balign KCRC_ALIGN
 
49#if defined(CONFIG_MODULE_REL_CRCS)
50	.long __crc_\name - .
51#else
52	.long __crc_\name
53#endif
54	.weak __crc_\name
55	.previous
56#endif
57#endif
58.endm
 
 
 
 
 
59
60#if defined(CONFIG_TRIM_UNUSED_KSYMS)
61
62#include <linux/kconfig.h>
63#include <generated/autoksyms.h>
64
65.macro __ksym_marker sym
66	.section ".discard.ksym","a"
67__ksym_marker_\sym:
68	 .previous
69.endm
70
71#define __EXPORT_SYMBOL(sym, val, sec)				\
72	__ksym_marker sym;					\
73	__cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym))
74#define __cond_export_sym(sym, val, sec, conf)			\
75	___cond_export_sym(sym, val, sec, conf)
76#define ___cond_export_sym(sym, val, sec, enabled)		\
77	__cond_export_sym_##enabled(sym, val, sec)
78#define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
79#define __cond_export_sym_0(sym, val, sec) /* nothing */
80
81#else
82#define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
83#endif
84
85#define EXPORT_SYMBOL(name)					\
86	__EXPORT_SYMBOL(name, KSYM_FUNC(name),)
87#define EXPORT_SYMBOL_GPL(name) 				\
88	__EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl)
89#define EXPORT_DATA_SYMBOL(name)				\
90	__EXPORT_SYMBOL(name, name,)
91#define EXPORT_DATA_SYMBOL_GPL(name)				\
92	__EXPORT_SYMBOL(name, name,_gpl)
93
94#endif