char *
symbol_name(struct elf_file *file, Elf32_Sym *symbol)
{
char *name = string_entry(file, file->string_table, symbol->st_name);
if (symbol->st_shndx == SHN_COMMON) {
return name;
}
if (*name == '\0') {
Elf32_Shdr *section = section_header(file, symbol->st_shndx);
name = string_entry(file, file->sh_string_table, section->sh_name);
}
return name;
}
void
dump_relocations(struct elf_file *file, Elf32_Shdr *header)
{
char *name = string_entry(file, file->sh_string_table, header->sh_name);
if (header->sh_type != SHT_REL) {
fprintf(stderr, "%s is not a relocation section\n", name);
return;
}
char *type_name = "unknown";
if (header->sh_type == SHT_REL) type_name = "SHT_REL";
if (header->sh_type == SHT_RELA) type_name = "SHT_RELA";
printf("\nRelocation section: %s [%s]\n", name, type_name);
if (header->sh_entsize != sizeof(Elf32_Rel)) {
fprintf(stderr, "table entry size (%d) is not sizeof(Elf32_Rel) [%zu]\n",
header->sh_entsize, sizeof(Elf32_Rel));
return;
}
if (header->sh_size % header->sh_entsize) {
fprintf(stderr, "section size is not a multiple of entrysize (%d/%d)\n",
header->sh_size, header->sh_entsize);
return;
}
size_t entry_count = header->sh_size / header->sh_entsize;
Elf32_Sym *symbols = (Elf32_Sym *)(file->file_data + file->symbol_table->sh_offset);
Elf32_Rel *relocations = (Elf32_Rel *)(file->file_data + header->sh_offset);
size_t idx;
printf("Idx Name value size offset section type\n");
for (idx = 0; idx < entry_count; idx++) {
Elf32_Rel *entry = relocations + idx;
Elf32_Sym *symbol = symbols + ELF32_R_SYM(entry->r_info);
printf("%4.4zu: %-24s %8.8X %4.4X %6X %-16s %s\n", idx,
symbol_name(file, symbol), symbol->st_value,
symbol->st_size, entry->r_offset,
section_name(file, section_header(file, symbol->st_shndx)),
relocation_type(ELF32_R_TYPE(entry->r_info)));
}
}
/** method to add valid string entries - can be called for
* OT_String */
void AddValidStringSetting(const std::string value,
const std::string description)
{
DBG_ASSERT(type_ == OT_String);
valid_strings_.push_back(string_entry(value, description));
}
char *
section_name(struct elf_file *file, Elf32_Shdr *header)
{
return string_entry(file, file->sh_string_table, header->sh_name);
}
