eaa223e795
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
87 lines
2 KiB
C
87 lines
2 KiB
C
#ifndef __MODULE_H
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#define __MODULE_H
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#include <elf.h>
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#include <linux/compiler.h>
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#include <linux/list.h>
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#ifndef MODULE_SYMBOL_PREFIX
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#define MODULE_SYMBOL_PREFIX
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#endif
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#define MODULE_NAME_LEN (64 - sizeof(unsigned long))
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#ifdef CONFIG_MODULES
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#include <asm/module.h>
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struct kernel_symbol
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{
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unsigned long value;
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const char *name;
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};
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struct module * load_module(void *mod_image, unsigned long len);
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/* For every exported symbol, place a struct in the __ksymtab section */
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#define __EXPORT_SYMBOL(sym, sec) \
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extern typeof(sym) sym; \
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static const char __ustrtab_##sym[] \
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__attribute__((section("__usymtab_strings"))) \
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= MODULE_SYMBOL_PREFIX #sym; \
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static const struct kernel_symbol __usymtab_##sym \
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__used \
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__attribute__((section("__usymtab" sec), unused)) \
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= { (unsigned long)&sym, __ustrtab_##sym }
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#define EXPORT_SYMBOL(sym) \
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__EXPORT_SYMBOL(sym, "")
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#define EXPORT_SYMBOL_GPL(sym) \
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__EXPORT_SYMBOL(sym, "")
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struct module {
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/* Unique handle for this module */
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char name[MODULE_NAME_LEN];
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/* Startup function. */
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int (*init)(void);
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/* Here is the actual code + data, free'd on unload. */
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void *module_core;
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/* Arch-specific module values */
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struct mod_arch_specific arch;
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unsigned long core_size;
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struct list_head list;
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};
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/* Apply the given relocation to the (simplified) ELF. Return -error
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or 0. */
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int apply_relocate(Elf_Shdr *sechdrs,
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const char *strtab,
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unsigned int symindex,
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unsigned int relsec,
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struct module *mod);
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/* Apply the given add relocation to the (simplified) ELF. Return
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-error or 0 */
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int apply_relocate_add(Elf_Shdr *sechdrs,
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const char *strtab,
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unsigned int symindex,
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unsigned int relsec,
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struct module *mod);
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#else
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#define EXPORT_SYMBOL(sym)
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#define EXPORT_SYMBOL_GPL(sym)
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#endif /* CONFIG_MODULES */
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extern struct list_head module_list;
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#define for_each_module(m) \
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list_for_each_entry(m, &module_list, list)
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#endif /* __MODULE_H */
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