cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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export.h (2350B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2#ifndef __ASM_GENERIC_EXPORT_H
      3#define __ASM_GENERIC_EXPORT_H
      4
      5/*
      6 * This comment block is used by fixdep. Please do not remove.
      7 *
      8 * When CONFIG_MODVERSIONS is changed from n to y, all source files having
      9 * EXPORT_SYMBOL variants must be re-compiled because genksyms is run as a
     10 * side effect of the *.o build rule.
     11 */
     12
     13#ifndef KSYM_FUNC
     14#define KSYM_FUNC(x) x
     15#endif
     16#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
     17#define KSYM_ALIGN 4
     18#elif defined(CONFIG_64BIT)
     19#define KSYM_ALIGN 8
     20#else
     21#define KSYM_ALIGN 4
     22#endif
     23
     24.macro __put, val, name
     25#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
     26	.long	\val - ., \name - ., 0
     27#elif defined(CONFIG_64BIT)
     28	.quad	\val, \name, 0
     29#else
     30	.long	\val, \name, 0
     31#endif
     32.endm
     33
     34/*
     35 * note on .section use: we specify progbits since usage of the "M" (SHF_MERGE)
     36 * section flag requires it. Use '%progbits' instead of '@progbits' since the
     37 * former apparently works on all arches according to the binutils source.
     38 */
     39
     40.macro ___EXPORT_SYMBOL name,val,sec
     41#if defined(CONFIG_MODULES) && !defined(__DISABLE_EXPORTS)
     42	.section ___ksymtab\sec+\name,"a"
     43	.balign KSYM_ALIGN
     44__ksymtab_\name:
     45	__put \val, __kstrtab_\name
     46	.previous
     47	.section __ksymtab_strings,"aMS",%progbits,1
     48__kstrtab_\name:
     49	.asciz "\name"
     50	.previous
     51#endif
     52.endm
     53
     54#if defined(CONFIG_TRIM_UNUSED_KSYMS)
     55
     56#include <linux/kconfig.h>
     57#include <generated/autoksyms.h>
     58
     59.macro __ksym_marker sym
     60	.section ".discard.ksym","a"
     61__ksym_marker_\sym:
     62	 .previous
     63.endm
     64
     65#define __EXPORT_SYMBOL(sym, val, sec)				\
     66	__ksym_marker sym;					\
     67	__cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym))
     68#define __cond_export_sym(sym, val, sec, conf)			\
     69	___cond_export_sym(sym, val, sec, conf)
     70#define ___cond_export_sym(sym, val, sec, enabled)		\
     71	__cond_export_sym_##enabled(sym, val, sec)
     72#define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
     73#define __cond_export_sym_0(sym, val, sec) /* nothing */
     74
     75#else
     76#define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
     77#endif
     78
     79#define EXPORT_SYMBOL(name)					\
     80	__EXPORT_SYMBOL(name, KSYM_FUNC(name),)
     81#define EXPORT_SYMBOL_GPL(name) 				\
     82	__EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl)
     83#define EXPORT_DATA_SYMBOL(name)				\
     84	__EXPORT_SYMBOL(name, name,)
     85#define EXPORT_DATA_SYMBOL_GPL(name)				\
     86	__EXPORT_SYMBOL(name, name,_gpl)
     87
     88#endif