1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_S390_MODULE_H
3 #define _ASM_S390_MODULE_H
4
5 #include <asm-generic/module.h>
6
7 /*
8 * This file contains the s390 architecture specific module code.
9 */
10
11 struct mod_arch_syminfo {
12 unsigned long got_offset;
13 unsigned long plt_offset;
14 int got_initialized;
15 int plt_initialized;
16 };
17
18 struct mod_arch_specific {
19 /* Starting offset of got in the module core memory. */
20 unsigned long got_offset;
21 /* Starting offset of plt in the module core memory. */
22 unsigned long plt_offset;
23 /* Size of the got. */
24 unsigned long got_size;
25 /* Size of the plt. */
26 unsigned long plt_size;
27 /* Number of symbols in syminfo. */
28 int nsyms;
29 /* Additional symbol information (got and plt offsets). */
30 struct mod_arch_syminfo *syminfo;
31 #ifdef CONFIG_FUNCTION_TRACER
32 /* Start of memory reserved for ftrace hotpatch trampolines. */
33 struct ftrace_hotpatch_trampoline *trampolines_start;
34 /* End of memory reserved for ftrace hotpatch trampolines. */
35 struct ftrace_hotpatch_trampoline *trampolines_end;
36 /* Next unused ftrace hotpatch trampoline slot. */
37 struct ftrace_hotpatch_trampoline *next_trampoline;
38 #endif /* CONFIG_FUNCTION_TRACER */
39 };
40
41 static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
42 const Elf_Shdr *sechdrs,
43 const char *name)
44 {
45 const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
46 const Elf_Shdr *s, *se;
47
48 for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
49 if (strcmp(name, secstrs + s->sh_name) == 0)
50 return s;
51 }
52 return NULL;
53 }
54
55 #endif /* _ASM_S390_MODULE_H */
56
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