^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* This is included from relocs_32/64.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #define ElfW(type) _ElfW(ELF_BITS, type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #define _ElfW(bits, type) __ElfW(bits, type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define __ElfW(bits, type) Elf##bits##_##type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define Elf_Addr ElfW(Addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define Elf_Ehdr ElfW(Ehdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define Elf_Phdr ElfW(Phdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define Elf_Shdr ElfW(Shdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define Elf_Sym ElfW(Sym)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static Elf_Ehdr ehdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct relocs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) uint32_t *offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) unsigned long count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) unsigned long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static struct relocs relocs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct section {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) Elf_Shdr shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct section *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) Elf_Sym *symtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) Elf_Rel *reltab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) char *strtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) long shdr_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct section *secs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static const char * const regex_sym_kernel = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Symbols matching these regex's should never be relocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) "^(__crc_)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static regex_t sym_regex_c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int regex_skip_reloc(const char *sym_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return !regexec(&sym_regex_c, sym_name, 0, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static void regex_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) char errbuf[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) err = regcomp(&sym_regex_c, regex_sym_kernel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) REG_EXTENDED|REG_NOSUB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) regerror(err, &sym_regex_c, errbuf, sizeof(errbuf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) die("%s", errbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static const char *rel_type(unsigned type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static const char * const type_name[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define REL_TYPE(X)[X] = #X
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) REL_TYPE(R_MIPS_NONE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) REL_TYPE(R_MIPS_16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) REL_TYPE(R_MIPS_32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) REL_TYPE(R_MIPS_REL32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) REL_TYPE(R_MIPS_26),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) REL_TYPE(R_MIPS_HI16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) REL_TYPE(R_MIPS_LO16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) REL_TYPE(R_MIPS_GPREL16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) REL_TYPE(R_MIPS_LITERAL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) REL_TYPE(R_MIPS_GOT16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) REL_TYPE(R_MIPS_PC16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) REL_TYPE(R_MIPS_CALL16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) REL_TYPE(R_MIPS_GPREL32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) REL_TYPE(R_MIPS_64),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) REL_TYPE(R_MIPS_HIGHER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) REL_TYPE(R_MIPS_HIGHEST),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) REL_TYPE(R_MIPS_PC21_S2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) REL_TYPE(R_MIPS_PC26_S2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #undef REL_TYPE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) const char *name = "unknown type rel type name";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (type < ARRAY_SIZE(type_name) && type_name[type])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) name = type_name[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static const char *sec_name(unsigned shndx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) const char *sec_strtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) sec_strtab = secs[ehdr.e_shstrndx].strtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (shndx < ehdr.e_shnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) name = sec_strtab + secs[shndx].shdr.sh_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) else if (shndx == SHN_ABS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) name = "ABSOLUTE";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) else if (shndx == SHN_COMMON)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) name = "COMMON";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) name = "<noname>";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static struct section *sec_lookup(const char *secname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) for (i = 0; i < ehdr.e_shnum; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (strcmp(secname, sec_name(i)) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static const char *sym_name(const char *sym_strtab, Elf_Sym *sym)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (sym->st_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) name = sym_strtab + sym->st_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) name = sec_name(sym->st_shndx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #if BYTE_ORDER == LITTLE_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define le16_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #define le32_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define le64_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #define be16_to_cpu(val) bswap_16(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define be32_to_cpu(val) bswap_32(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define be64_to_cpu(val) bswap_64(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define cpu_to_le16(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define cpu_to_le32(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define cpu_to_le64(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define cpu_to_be16(val) bswap_16(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define cpu_to_be32(val) bswap_32(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define cpu_to_be64(val) bswap_64(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #if BYTE_ORDER == BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define le16_to_cpu(val) bswap_16(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define le32_to_cpu(val) bswap_32(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #define le64_to_cpu(val) bswap_64(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define be16_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #define be32_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define be64_to_cpu(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define cpu_to_le16(val) bswap_16(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define cpu_to_le32(val) bswap_32(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define cpu_to_le64(val) bswap_64(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define cpu_to_be16(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define cpu_to_be32(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define cpu_to_be64(val) (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static uint16_t elf16_to_cpu(uint16_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return le16_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return be16_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static uint32_t elf32_to_cpu(uint32_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return le32_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return be32_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static uint32_t cpu_to_elf32(uint32_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return cpu_to_le32(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return cpu_to_be32(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define elf_half_to_cpu(x) elf16_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #define elf_word_to_cpu(x) elf32_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #if ELF_BITS == 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static uint64_t elf64_to_cpu(uint64_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return le64_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return be64_to_cpu(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #define elf_addr_to_cpu(x) elf64_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #define elf_off_to_cpu(x) elf64_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #define elf_xword_to_cpu(x) elf64_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) #define elf_addr_to_cpu(x) elf32_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) #define elf_off_to_cpu(x) elf32_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #define elf_xword_to_cpu(x) elf32_to_cpu(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static void read_ehdr(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) die("Cannot read ELF header: %s\n", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) die("No ELF magic\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (ehdr.e_ident[EI_CLASS] != ELF_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) die("Not a %d bit executable\n", ELF_BITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if ((ehdr.e_ident[EI_DATA] != ELFDATA2LSB) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) (ehdr.e_ident[EI_DATA] != ELFDATA2MSB))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) die("Unknown ELF Endianness\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (ehdr.e_ident[EI_VERSION] != EV_CURRENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) die("Unknown ELF version\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* Convert the fields to native endian */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ehdr.e_type = elf_half_to_cpu(ehdr.e_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) ehdr.e_machine = elf_half_to_cpu(ehdr.e_machine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ehdr.e_version = elf_word_to_cpu(ehdr.e_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ehdr.e_entry = elf_addr_to_cpu(ehdr.e_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ehdr.e_phoff = elf_off_to_cpu(ehdr.e_phoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ehdr.e_shoff = elf_off_to_cpu(ehdr.e_shoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ehdr.e_flags = elf_word_to_cpu(ehdr.e_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) ehdr.e_ehsize = elf_half_to_cpu(ehdr.e_ehsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) ehdr.e_phentsize = elf_half_to_cpu(ehdr.e_phentsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ehdr.e_phnum = elf_half_to_cpu(ehdr.e_phnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) ehdr.e_shentsize = elf_half_to_cpu(ehdr.e_shentsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) ehdr.e_shnum = elf_half_to_cpu(ehdr.e_shnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ehdr.e_shstrndx = elf_half_to_cpu(ehdr.e_shstrndx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) die("Unsupported ELF header type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (ehdr.e_machine != ELF_MACHINE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) die("Not for %s\n", ELF_MACHINE_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (ehdr.e_version != EV_CURRENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) die("Unknown ELF version\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (ehdr.e_ehsize != sizeof(Elf_Ehdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) die("Bad Elf header size\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (ehdr.e_phentsize != sizeof(Elf_Phdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) die("Bad program header entry\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (ehdr.e_shentsize != sizeof(Elf_Shdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) die("Bad section header entry\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (ehdr.e_shstrndx >= ehdr.e_shnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) die("String table index out of bounds\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static void read_shdrs(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) Elf_Shdr shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) secs = calloc(ehdr.e_shnum, sizeof(struct section));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (!secs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) die("Unable to allocate %d section headers\n", ehdr.e_shnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) die("Seek to %d failed: %s\n", ehdr.e_shoff, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) sec->shdr_offset = ftell(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) die("Cannot read ELF section headers %d/%d: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) i, ehdr.e_shnum, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) sec->shdr.sh_name = elf_word_to_cpu(shdr.sh_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) sec->shdr.sh_type = elf_word_to_cpu(shdr.sh_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) sec->shdr.sh_flags = elf_xword_to_cpu(shdr.sh_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) sec->shdr.sh_addr = elf_addr_to_cpu(shdr.sh_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) sec->shdr.sh_offset = elf_off_to_cpu(shdr.sh_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) sec->shdr.sh_size = elf_xword_to_cpu(shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) sec->shdr.sh_link = elf_word_to_cpu(shdr.sh_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) sec->shdr.sh_info = elf_word_to_cpu(shdr.sh_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) sec->shdr.sh_addralign = elf_xword_to_cpu(shdr.sh_addralign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) sec->shdr.sh_entsize = elf_xword_to_cpu(shdr.sh_entsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (sec->shdr.sh_link < ehdr.e_shnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) sec->link = &secs[sec->shdr.sh_link];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static void read_strtabs(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (sec->shdr.sh_type != SHT_STRTAB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) sec->strtab = malloc(sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (!sec->strtab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) die("malloc of %d bytes for strtab failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) sec->shdr.sh_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (fread(sec->strtab, 1, sec->shdr.sh_size, fp) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) sec->shdr.sh_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) die("Cannot read symbol table: %s\n", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static void read_symtabs(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (sec->shdr.sh_type != SHT_SYMTAB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) sec->symtab = malloc(sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (!sec->symtab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) die("malloc of %d bytes for symtab failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) sec->shdr.sh_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (fread(sec->symtab, 1, sec->shdr.sh_size, fp) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) sec->shdr.sh_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) die("Cannot read symbol table: %s\n", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Sym); j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) Elf_Sym *sym = &sec->symtab[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) sym->st_name = elf_word_to_cpu(sym->st_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) sym->st_value = elf_addr_to_cpu(sym->st_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) sym->st_size = elf_xword_to_cpu(sym->st_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) sym->st_shndx = elf_half_to_cpu(sym->st_shndx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static void read_relocs(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) static unsigned long base = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (!base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) struct section *sec = sec_lookup(".text");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (!sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) die("Could not find .text section\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) base = sec->shdr.sh_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (sec->shdr.sh_type != SHT_REL_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) sec->reltab = malloc(sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (!sec->reltab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) die("malloc of %d bytes for relocs failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) sec->shdr.sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) sec->shdr.sh_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (fread(sec->reltab, 1, sec->shdr.sh_size, fp) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) sec->shdr.sh_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) die("Cannot read symbol table: %s\n", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) Elf_Rel *rel = &sec->reltab[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) rel->r_offset = elf_addr_to_cpu(rel->r_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /* Set offset into kernel image */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) rel->r_offset -= base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) #if (ELF_BITS == 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) rel->r_info = elf_xword_to_cpu(rel->r_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* Convert MIPS64 RELA format - only the symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * index needs converting to native endianness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) rel->r_info = rel->r_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ELF_R_SYM(rel->r_info) = elf32_to_cpu(ELF_R_SYM(rel->r_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) #if (SHT_REL_TYPE == SHT_RELA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) rel->r_addend = elf_xword_to_cpu(rel->r_addend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static void remove_relocs(FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) Elf_Shdr shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (sec->shdr.sh_type != SHT_REL_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) sec->shdr_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) die("Cannot read ELF section headers %d/%d: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) i, ehdr.e_shnum, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /* Set relocation section size to 0, effectively removing it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) * This is necessary due to lack of support for relocations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * in objcopy when creating 32bit elf from 64bit elf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) shdr.sh_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) sec->shdr_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (fwrite(&shdr, sizeof(shdr), 1, fp) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) die("Cannot write ELF section headers %d/%d: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) i, ehdr.e_shnum, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) static void add_reloc(struct relocs *r, uint32_t offset, unsigned type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* Relocation representation in binary table:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * |76543210|76543210|76543210|76543210|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * | Type | offset from _text >> 2 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) offset >>= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (offset > 0x00FFFFFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) die("Kernel image exceeds maximum size for relocation!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) offset = (offset & 0x00FFFFFF) | ((type & 0xFF) << 24);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (r->count == r->size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) unsigned long newsize = r->size + 50000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) void *mem = realloc(r->offset, newsize * sizeof(r->offset[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (!mem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) die("realloc failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) r->offset = mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) r->size = newsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) r->offset[r->count++] = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) Elf_Sym *sym, const char *symname))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) /* Walk through the relocations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) for (i = 0; i < ehdr.e_shnum; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) char *sym_strtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) Elf_Sym *sh_symtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct section *sec_applies, *sec_symtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct section *sec = &secs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (sec->shdr.sh_type != SHT_REL_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) sec_symtab = sec->link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) sec_applies = &secs[sec->shdr.sh_info];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (!(sec_applies->shdr.sh_flags & SHF_ALLOC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) sh_symtab = sec_symtab->symtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) sym_strtab = sec_symtab->link->strtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) Elf_Rel *rel = &sec->reltab[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) const char *symname = sym_name(sym_strtab, sym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) process(sec, rel, sym, symname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static int do_reloc(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) const char *symname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) unsigned r_type = ELF_R_TYPE(rel->r_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) unsigned bind = ELF_ST_BIND(sym->st_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if ((bind == STB_WEAK) && (sym->st_value == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* Don't relocate weak symbols without a target */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (regex_skip_reloc(symname))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) switch (r_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) case R_MIPS_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) case R_MIPS_REL32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) case R_MIPS_PC16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) case R_MIPS_PC21_S2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) case R_MIPS_PC26_S2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * NONE can be ignored and PC relative relocations don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * need to be adjusted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) case R_MIPS_HIGHEST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) case R_MIPS_HIGHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* We support relocating within the same 4Gb segment only,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * thus leaving the top 32bits unchanged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) case R_MIPS_LO16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /* We support relocating by 64k jumps only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * thus leaving the bottom 16bits unchanged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) case R_MIPS_64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) case R_MIPS_32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) case R_MIPS_26:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) case R_MIPS_HI16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) add_reloc(&relocs, rel->r_offset, r_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) die("Unsupported relocation type: %s (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) rel_type(r_type), r_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) static int write_reloc_as_bin(uint32_t v, FILE *f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) unsigned char buf[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) v = cpu_to_elf32(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) memcpy(buf, &v, sizeof(uint32_t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return fwrite(buf, 1, 4, f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static int write_reloc_as_text(uint32_t v, FILE *f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) res = fprintf(f, "\t.long 0x%08"PRIx32"\n", v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (res < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) return sizeof(uint32_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) static void emit_relocs(int as_text, int as_bin, FILE *outf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) int (*write_reloc)(uint32_t, FILE *) = write_reloc_as_bin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) int size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) int size_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct section *sec_reloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) sec_reloc = sec_lookup(".data.reloc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (!sec_reloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) die("Could not find relocation section\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) size_reserved = sec_reloc->shdr.sh_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* Collect up the relocations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) walk_relocs(do_reloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* Print the relocations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (as_text) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) /* Print the relocations in a form suitable that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * gas will like.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) printf(".section \".data.reloc\",\"a\"\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) printf(".balign 4\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) /* Output text to stdout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) write_reloc = write_reloc_as_text;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) outf = stdout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) } else if (as_bin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /* Output raw binary to stdout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) outf = stdout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /* Seek to offset of the relocation section.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) * Each relocation is then written into the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * vmlinux kernel image.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (fseek(outf, sec_reloc->shdr.sh_offset, SEEK_SET) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) die("Seek to %d failed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) sec_reloc->shdr.sh_offset, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) for (i = 0; i < relocs.count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) size += write_reloc(relocs.offset[i], outf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* Print a stop, but only if we've actually written some relocs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) size += write_reloc(0, outf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (size > size_reserved)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) /* Die, but suggest a value for CONFIG_RELOCATION_TABLE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * which will fix this problem and allow a bit of headroom
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * if more kernel features are enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) die("Relocations overflow available space!\n" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) "Please adjust CONFIG_RELOCATION_TABLE_SIZE " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) "to at least 0x%08x\n", (size + 0x1000) & ~0xFFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * As an aid to debugging problems with different linkers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * print summary information about the relocs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * Since different linkers tend to emit the sections in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * different orders we use the section names in the output.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) static int do_reloc_info(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) const char *symname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) printf("%16s 0x%08x %16s %40s %16s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) sec_name(sec->shdr.sh_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) (unsigned int)rel->r_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) rel_type(ELF_R_TYPE(rel->r_info)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) symname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) sec_name(sym->st_shndx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) static void print_reloc_info(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) printf("%16s %10s %16s %40s %16s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) "reloc section",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) "offset",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) "reloc type",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) "symbol",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) "symbol section");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) walk_relocs(do_reloc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) #if ELF_BITS == 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) # define process process_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) # define process process_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) void process(FILE *fp, int as_text, int as_bin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) int show_reloc_info, int keep_relocs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) regex_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) read_ehdr(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) read_shdrs(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) read_strtabs(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) read_symtabs(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) read_relocs(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (show_reloc_info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) print_reloc_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) emit_relocs(as_text, as_bin, fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (!keep_relocs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) remove_relocs(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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