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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/asm-generic/export.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/asm-generic/export.h')
-rw-r--r-- | include/asm-generic/export.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/asm-generic/export.h b/include/asm-generic/export.h new file mode 100644 index 000000000..5e4b1f236 --- /dev/null +++ b/include/asm-generic/export.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASM_GENERIC_EXPORT_H +#define __ASM_GENERIC_EXPORT_H + +/* + * This comment block is used by fixdep. Please do not remove. + * + * When CONFIG_MODVERSIONS is changed from n to y, all source files having + * EXPORT_SYMBOL variants must be re-compiled because genksyms is run as a + * side effect of the *.o build rule. + */ + +#ifndef KSYM_FUNC +#define KSYM_FUNC(x) x +#endif +#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS +#define KSYM_ALIGN 4 +#elif defined(CONFIG_64BIT) +#define KSYM_ALIGN 8 +#else +#define KSYM_ALIGN 4 +#endif + +.macro __put, val, name +#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS + .long \val - ., \name - ., 0 +#elif defined(CONFIG_64BIT) + .quad \val, \name, 0 +#else + .long \val, \name, 0 +#endif +.endm + +/* + * note on .section use: we specify progbits since usage of the "M" (SHF_MERGE) + * section flag requires it. Use '%progbits' instead of '@progbits' since the + * former apparently works on all arches according to the binutils source. + */ + +.macro ___EXPORT_SYMBOL name,val,sec +#if defined(CONFIG_MODULES) && !defined(__DISABLE_EXPORTS) + .section ___ksymtab\sec+\name,"a" + .balign KSYM_ALIGN +__ksymtab_\name: + __put \val, __kstrtab_\name + .previous + .section __ksymtab_strings,"aMS",%progbits,1 +__kstrtab_\name: + .asciz "\name" + .previous +#endif +.endm + +#if defined(CONFIG_TRIM_UNUSED_KSYMS) + +#include <linux/kconfig.h> +#include <generated/autoksyms.h> + +.macro __ksym_marker sym + .section ".discard.ksym","a" +__ksym_marker_\sym: + .previous +.endm + +#define __EXPORT_SYMBOL(sym, val, sec) \ + __ksym_marker sym; \ + __cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym)) +#define __cond_export_sym(sym, val, sec, conf) \ + ___cond_export_sym(sym, val, sec, conf) +#define ___cond_export_sym(sym, val, sec, enabled) \ + __cond_export_sym_##enabled(sym, val, sec) +#define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec +#define __cond_export_sym_0(sym, val, sec) /* nothing */ + +#else +#define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec +#endif + +#define EXPORT_SYMBOL(name) \ + __EXPORT_SYMBOL(name, KSYM_FUNC(name),) +#define EXPORT_SYMBOL_GPL(name) \ + __EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl) +#define EXPORT_DATA_SYMBOL(name) \ + __EXPORT_SYMBOL(name, name,) +#define EXPORT_DATA_SYMBOL_GPL(name) \ + __EXPORT_SYMBOL(name, name,_gpl) + +#endif |