linux/arch/arm/include/asm/module.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_ARM_MODULE_H
   3#define _ASM_ARM_MODULE_H
   4
   5#include <asm-generic/module.h>
   6
   7struct unwind_table;
   8
   9#ifdef CONFIG_ARM_UNWIND
  10enum {
  11        ARM_SEC_INIT,
  12        ARM_SEC_DEVINIT,
  13        ARM_SEC_CORE,
  14        ARM_SEC_EXIT,
  15        ARM_SEC_DEVEXIT,
  16        ARM_SEC_HOT,
  17        ARM_SEC_UNLIKELY,
  18        ARM_SEC_MAX,
  19};
  20#endif
  21
  22#define PLT_ENT_STRIDE          L1_CACHE_BYTES
  23#define PLT_ENT_COUNT           (PLT_ENT_STRIDE / sizeof(u32))
  24#define PLT_ENT_SIZE            (sizeof(struct plt_entries) / PLT_ENT_COUNT)
  25
  26struct plt_entries {
  27        u32     ldr[PLT_ENT_COUNT];
  28        u32     lit[PLT_ENT_COUNT];
  29};
  30
  31struct mod_plt_sec {
  32        struct elf32_shdr       *plt;
  33        struct plt_entries      *plt_ent;
  34        int                     plt_count;
  35};
  36
  37struct mod_arch_specific {
  38#ifdef CONFIG_ARM_UNWIND
  39        struct unwind_table *unwind[ARM_SEC_MAX];
  40#endif
  41#ifdef CONFIG_ARM_MODULE_PLTS
  42        struct mod_plt_sec      core;
  43        struct mod_plt_sec      init;
  44#endif
  45};
  46
  47struct module;
  48u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
  49
  50#ifdef CONFIG_THUMB2_KERNEL
  51#define HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
  52static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
  53{
  54        if (ELF_ST_TYPE(sym->st_info) == STT_FUNC)
  55                return sym->st_value & ~1;
  56
  57        return sym->st_value;
  58}
  59#endif
  60
  61#endif /* _ASM_ARM_MODULE_H */
  62
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