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
16struct plt_entries {
17	u32	ldr[PLT_ENT_COUNT];
18	u32	lit[PLT_ENT_COUNT];
19};
20
21struct mod_plt_sec {
22	struct elf32_shdr	*plt;
23	struct plt_entries	*plt_ent;
24	int			plt_count;
 
 
 
 
 
 
25};
 
26
27struct 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
38struct module;
39u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
40#ifdef CONFIG_ARM_MODULE_PLTS
41bool in_module_plt(unsigned long loc);
 
 
 
 
 
 
 
42#else
43static 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
48static 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 */

 
 1#ifndef _ASM_ARM_MODULE_H
 2#define _ASM_ARM_MODULE_H
 3
 4#include <asm-generic/module.h>
 
 5
 6struct unwind_table;
 
 
 
 
 
 
 
 
 
 
 
 7
 8#ifdef CONFIG_ARM_UNWIND
 9enum {
10	ARM_SEC_INIT,
11	ARM_SEC_DEVINIT,
12	ARM_SEC_CORE,
13	ARM_SEC_EXIT,
14	ARM_SEC_DEVEXIT,
15	ARM_SEC_HOT,
16	ARM_SEC_UNLIKELY,
17	ARM_SEC_MAX,
18};
19#endif
20
21struct mod_arch_specific {
22#ifdef CONFIG_ARM_UNWIND
23	struct unwind_table *unwind[ARM_SEC_MAX];
 
24#endif
25#ifdef CONFIG_ARM_MODULE_PLTS
26	struct elf32_shdr   *core_plt;
27	struct elf32_shdr   *init_plt;
28	int		    core_plt_count;
29	int		    init_plt_count;
30#endif
31};
32
 
33u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
34
35/*
36 * Add the ARM architecture version to the version magic string
37 */
38#define MODULE_ARCH_VERMAGIC_ARMVSN "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
39
40/* Add __virt_to_phys patching state as well */
41#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
42#define MODULE_ARCH_VERMAGIC_P2V "p2v8 "
43#else
44#define MODULE_ARCH_VERMAGIC_P2V ""
45#endif
46
47/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
48#ifdef CONFIG_THUMB2_KERNEL
49#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
50#else
51#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
 
 
 
 
 
52#endif
53
54#define MODULE_ARCH_VERMAGIC \
55	MODULE_ARCH_VERMAGIC_ARMVSN \
56	MODULE_ARCH_VERMAGIC_ARMTHUMB \
57	MODULE_ARCH_VERMAGIC_P2V
58
59#endif /* _ASM_ARM_MODULE_H */