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 #include <asm/unwind.h> 7 8 #ifdef CONFIG_ARM_UNWIND 9 #define ELF_SECTION_UNWIND 0x70000001 10 #endif 11 12 #define PLT_ENT_STRIDE L1_CACHE_BYTES 13 #define PLT_ENT_COUNT (PLT_ENT_STRIDE / sizeof(u32)) 14 #define PLT_ENT_SIZE (sizeof(struct plt_entries) / PLT_ENT_COUNT) 15 16 struct plt_entries { 17 u32 ldr[PLT_ENT_COUNT]; 18 u32 lit[PLT_ENT_COUNT]; 19 }; 20 21 struct mod_plt_sec { 22 struct elf32_shdr *plt; 23 struct plt_entries *plt_ent; 24 int plt_count; 25 }; 26 27 struct mod_arch_specific { 28 #ifdef CONFIG_ARM_UNWIND 29 struct list_head unwind_list; 30 struct unwind_table *init_table; 31 #endif 32 #ifdef CONFIG_ARM_MODULE_PLTS 33 struct mod_plt_sec core; 34 struct mod_plt_sec init; 35 #endif 36 }; 37 38 struct module; 39 u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val); 40 #ifdef CONFIG_ARM_MODULE_PLTS 41 bool in_module_plt(unsigned long loc); 42 #else 43 static inline bool in_module_plt(unsigned long loc) { return false; } 44 #endif 45 46 #ifdef CONFIG_THUMB2_KERNEL 47 #define HAVE_ARCH_KALLSYMS_SYMBOL_VALUE 48 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym) 49 { 50 if (ELF_ST_TYPE(sym->st_info) == STT_FUNC) 51 return sym->st_value & ~1; 52 53 return sym->st_value; 54 } 55 #endif 56 57 #endif /* _ASM_ARM_MODULE_H */ 58