This source file includes following definitions.
- is_forbidden_offset_for_adrp
- plt_entry_is_initialized
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5 #ifndef __ASM_MODULE_H
6 #define __ASM_MODULE_H
7
8 #include <asm-generic/module.h>
9
10 #define MODULE_ARCH_VERMAGIC "aarch64"
11
12 #ifdef CONFIG_ARM64_MODULE_PLTS
13 struct mod_plt_sec {
14 int plt_shndx;
15 int plt_num_entries;
16 int plt_max_entries;
17 };
18
19 struct mod_arch_specific {
20 struct mod_plt_sec core;
21 struct mod_plt_sec init;
22
23
24 struct plt_entry *ftrace_trampoline;
25 };
26 #endif
27
28 u64 module_emit_plt_entry(struct module *mod, Elf64_Shdr *sechdrs,
29 void *loc, const Elf64_Rela *rela,
30 Elf64_Sym *sym);
31
32 u64 module_emit_veneer_for_adrp(struct module *mod, Elf64_Shdr *sechdrs,
33 void *loc, u64 val);
34
35 #ifdef CONFIG_RANDOMIZE_BASE
36 extern u64 module_alloc_base;
37 #else
38 #define module_alloc_base ((u64)_etext - MODULES_VSIZE)
39 #endif
40
41 struct plt_entry {
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49
50 __le32 adrp;
51 __le32 add;
52 __le32 br;
53 };
54
55 static inline bool is_forbidden_offset_for_adrp(void *place)
56 {
57 return IS_ENABLED(CONFIG_ARM64_ERRATUM_843419) &&
58 cpus_have_const_cap(ARM64_WORKAROUND_843419) &&
59 ((u64)place & 0xfff) >= 0xff8;
60 }
61
62 struct plt_entry get_plt_entry(u64 dst, void *pc);
63 bool plt_entries_equal(const struct plt_entry *a, const struct plt_entry *b);
64
65 static inline bool plt_entry_is_initialized(const struct plt_entry *e)
66 {
67 return e->adrp || e->add || e->br;
68 }
69
70 #endif