b052e2ae06241108b3b2aa43b4d4f508e77b7ab8
2 * SPDX-License-Identifier: LGPL-2.1-or-later
4 * Copyright (C) 2015 Antoine Busque <abusque@efficios.com>
7 #ifndef _LIB_LTTNG_UST_ELF_H
8 #define _LIB_LTTNG_UST_ELF_H
11 #include <lttng/ust-endian.h>
14 * Determine native endianness in order to convert when reading an ELF
15 * file if there is a mismatch.
17 #if BYTE_ORDER == LITTLE_ENDIAN
18 #define NATIVE_ELF_ENDIANNESS ELFDATA2LSB
20 #define NATIVE_ELF_ENDIANNESS ELFDATA2MSB
24 * The size in bytes of the debug link CRC as contained in an ELF
27 #define ELF_CRC_SIZE 4
29 * ELF notes are aligned on 4 bytes. ref: ELF specification version
32 #define ELF_NOTE_ENTRY_ALIGN 4
34 * Within an ELF note, the `desc` field is also aligned on 4
35 * bytes. ref: ELF specification version 1.1 p. 2-5.
37 #define ELF_NOTE_DESC_ALIGN 4
41 switch (sizeof(x)) { \
58 #define bswap_phdr(phdr) \
60 bswap((phdr).p_type); \
61 bswap((phdr).p_offset); \
62 bswap((phdr).p_filesz); \
63 bswap((phdr).p_memsz); \
64 bswap((phdr).p_align); \
65 bswap((phdr).p_vaddr); \
68 #define bswap_shdr(shdr) \
70 bswap((shdr).sh_name); \
71 bswap((shdr).sh_type); \
72 bswap((shdr).sh_flags); \
73 bswap((shdr).sh_addr); \
74 bswap((shdr).sh_offset); \
75 bswap((shdr).sh_size); \
76 bswap((shdr).sh_link); \
77 bswap((shdr).sh_info); \
78 bswap((shdr).sh_addralign); \
79 bswap((shdr).sh_entsize); \
82 #define bswap_ehdr(ehdr) \
84 bswap((ehdr).e_type); \
85 bswap((ehdr).e_machine); \
86 bswap((ehdr).e_version); \
87 bswap((ehdr).e_entry); \
88 bswap((ehdr).e_phoff); \
89 bswap((ehdr).e_shoff); \
90 bswap((ehdr).e_flags); \
91 bswap((ehdr).e_ehsize); \
92 bswap((ehdr).e_phentsize); \
93 bswap((ehdr).e_phnum); \
94 bswap((ehdr).e_shentsize); \
95 bswap((ehdr).e_shnum); \
96 bswap((ehdr).e_shstrndx); \
99 #define copy_phdr(src_phdr, dst_phdr) \
101 (dst_phdr).p_type = (src_phdr).p_type; \
102 (dst_phdr).p_offset = (src_phdr).p_offset; \
103 (dst_phdr).p_filesz = (src_phdr).p_filesz; \
104 (dst_phdr).p_memsz = (src_phdr).p_memsz; \
105 (dst_phdr).p_align = (src_phdr).p_align; \
106 (dst_phdr).p_vaddr = (src_phdr).p_vaddr; \
109 #define copy_shdr(src_shdr, dst_shdr) \
111 (dst_shdr).sh_name = (src_shdr).sh_name; \
112 (dst_shdr).sh_type = (src_shdr).sh_type; \
113 (dst_shdr).sh_flags = (src_shdr).sh_flags; \
114 (dst_shdr).sh_addr = (src_shdr).sh_addr; \
115 (dst_shdr).sh_offset = (src_shdr).sh_offset; \
116 (dst_shdr).sh_size = (src_shdr).sh_size; \
117 (dst_shdr).sh_link = (src_shdr).sh_link; \
118 (dst_shdr).sh_info = (src_shdr).sh_info; \
119 (dst_shdr).sh_addralign = (src_shdr).sh_addralign; \
120 (dst_shdr).sh_entsize = (src_shdr).sh_entsize; \
123 #define copy_ehdr(src_ehdr, dst_ehdr) \
125 (dst_ehdr).e_type = (src_ehdr).e_type; \
126 (dst_ehdr).e_machine = (src_ehdr).e_machine; \
127 (dst_ehdr).e_version = (src_ehdr).e_version; \
128 (dst_ehdr).e_entry = (src_ehdr).e_entry; \
129 (dst_ehdr).e_phoff = (src_ehdr).e_phoff; \
130 (dst_ehdr).e_shoff = (src_ehdr).e_shoff; \
131 (dst_ehdr).e_flags = (src_ehdr).e_flags; \
132 (dst_ehdr).e_ehsize = (src_ehdr).e_ehsize; \
133 (dst_ehdr).e_phentsize = (src_ehdr).e_phentsize; \
134 (dst_ehdr).e_phnum = (src_ehdr).e_phnum; \
135 (dst_ehdr).e_shentsize = (src_ehdr).e_shentsize; \
136 (dst_ehdr).e_shnum = (src_ehdr).e_shnum; \
137 (dst_ehdr).e_shstrndx = (src_ehdr).e_shstrndx; \
141 int is_elf_32_bit(struct lttng_ust_elf
*elf
)
143 return elf
->bitness
== ELFCLASS32
;
147 int is_elf_native_endian(struct lttng_ust_elf
*elf
)
149 return elf
->endianness
== NATIVE_ELF_ENDIANNESS
;
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