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/* 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 */