LXR linux/arch/arm/include/asm/module.h

   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
  22struct mod_plt_sec {
  23        struct elf32_shdr       *plt;
  24        int                     plt_count;
  25};
  26
  27struct mod_arch_specific {
  28#ifdef CONFIG_ARM_UNWIND
  29        struct unwind_table *unwind[ARM_SEC_MAX];
  30#endif
  31#ifdef CONFIG_ARM_MODULE_PLTS
  32        struct mod_plt_sec      core;
  33        struct mod_plt_sec      init;
  34#endif
  35};
  36
  37struct module;
  38u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
  39
  40/*
  41 * Add the ARM architecture version to the version magic string
  42 */
  43#define MODULE_ARCH_VERMAGIC_ARMVSN "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
  44
  45/* Add __virt_to_phys patching state as well */
  46#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
  47#define MODULE_ARCH_VERMAGIC_P2V "p2v8 "
  48#else
  49#define MODULE_ARCH_VERMAGIC_P2V ""
  50#endif
  51
  52/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
  53#ifdef CONFIG_THUMB2_KERNEL
  54#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
  55#else
  56#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
  57#endif
  58
  59#define MODULE_ARCH_VERMAGIC \
  60        MODULE_ARCH_VERMAGIC_ARMVSN \
  61        MODULE_ARCH_VERMAGIC_ARMTHUMB \
  62        MODULE_ARCH_VERMAGIC_P2V
  63
  64#ifdef CONFIG_THUMB2_KERNEL
  65#define HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
  66static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
  67{
  68        if (ELF_ST_TYPE(sym->st_info) == STT_FUNC)
  69                return sym->st_value & ~1;
  70
  71        return sym->st_value;
  72}
  73#endif
  74
  75#endif /* _ASM_ARM_MODULE_H */
  76