diff options
Diffstat (limited to 'binutils/readelf.c')
| -rw-r--r-- | binutils/readelf.c | 813 |
1 files changed, 582 insertions, 231 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index 8c69d96..5798661 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -71,7 +71,7 @@ char * program_name = "readelf"; unsigned int dynamic_addr; -unsigned int dynamic_size; +bfd_size_type dynamic_size; unsigned int rela_addr; unsigned int rela_size; char * dynamic_strings; @@ -104,7 +104,7 @@ int do_debug_abbrevs; int do_debug_lines; int do_debug_pubnames; int do_debug_aranges; -int binary_class; +int is_32bit_elf; /* A dynamic array of flags indicating which sections require dumping. */ char * dump_sects = NULL; @@ -115,38 +115,45 @@ unsigned int num_dump_sects = 0; #define DEBUG_DUMP (1 << 2) /* Forward declarations for dumb compilers. */ -static unsigned long (* byte_get) PARAMS ((unsigned char *, int)); -static const char * get_mips_dynamic_type PARAMS ((unsigned long type)); -static const char * get_dynamic_type PARAMS ((unsigned long type)); +static bfd_vma (* byte_get) PARAMS ((unsigned char *, int)); +static bfd_vma byte_get_little_endian PARAMS ((unsigned char *, int)); +static bfd_vma byte_get_big_endian PARAMS ((unsigned char *, int)); +static const char * get_mips_dynamic_type PARAMS ((unsigned long)); +static const char * get_dynamic_type PARAMS ((unsigned long)); static int dump_relocations PARAMS ((FILE *, unsigned long, unsigned long, Elf_Internal_Sym *, char *, int)); -static char * get_file_type PARAMS ((unsigned e_type)); -static char * get_machine_name PARAMS ((unsigned e_machine)); -static char * get_machine_data PARAMS ((unsigned e_data)); -static char * get_machine_flags PARAMS ((unsigned, unsigned e_machine)); -static const char * get_mips_segment_type PARAMS ((unsigned long type)); -static const char * get_segment_type PARAMS ((unsigned long p_type)); -static const char * get_mips_section_type_name PARAMS ((unsigned int sh_type)); -static const char * get_section_type_name PARAMS ((unsigned int sh_type)); -static char * get_symbol_binding PARAMS ((unsigned int binding)); -static char * get_symbol_type PARAMS ((unsigned int type)); +static char * get_file_type PARAMS ((unsigned)); +static char * get_machine_name PARAMS ((unsigned)); +static char * get_machine_flags PARAMS ((unsigned, unsigned)); +static const char * get_mips_segment_type PARAMS ((unsigned long)); +static const char * get_segment_type PARAMS ((unsigned long)); +static const char * get_mips_section_type_name PARAMS ((unsigned int)); +static const char * get_section_type_name PARAMS ((unsigned int)); +static char * get_symbol_binding PARAMS ((unsigned int)); +static char * get_symbol_type PARAMS ((unsigned int)); static void usage PARAMS ((void)); -static void parse_args PARAMS ((int argc, char ** argv)); +static void parse_args PARAMS ((int, char **)); static int process_file_header PARAMS ((void)); static int process_program_headers PARAMS ((FILE *)); static int process_section_headers PARAMS ((FILE *)); -static void dynamic_segment_mips_val PARAMS ((Elf_Internal_Dyn *entry)); +static void dynamic_segment_mips_val PARAMS ((Elf_Internal_Dyn *)); static int process_dynamic_segment PARAMS ((FILE *)); static int process_symbol_table PARAMS ((FILE *)); static int process_section_contents PARAMS ((FILE *)); -static void process_file PARAMS ((char * file_name)); +static void process_file PARAMS ((char *)); static int process_relocs PARAMS ((FILE *)); static int process_version_sections PARAMS ((FILE *)); -static char * get_ver_flags PARAMS ((unsigned int flags)); -static char * get_symbol_index_type PARAMS ((unsigned int type)); -static int get_section_headers PARAMS ((FILE * file)); -static int get_file_header PARAMS ((FILE * file)); -static Elf_Internal_Sym * get_elf_symbols PARAMS ((FILE * file, unsigned long offset, unsigned long number)); -static int * get_dynamic_data PARAMS ((FILE * file, unsigned int number)); +static char * get_ver_flags PARAMS ((unsigned int)); +static char * get_symbol_index_type PARAMS ((unsigned int)); +static int get_32bit_section_headers PARAMS ((FILE *)); +static int get_64bit_section_headers PARAMS ((FILE *)); +static int get_32bit_program_headers PARAMS ((FILE *, Elf_Internal_Phdr *)); +static int get_64bit_program_headers PARAMS ((FILE *, Elf_Internal_Phdr *)); +static int get_file_header PARAMS ((FILE *)); +static Elf_Internal_Sym * get_32bit_elf_symbols PARAMS ((FILE *, unsigned long, unsigned long)); +static Elf_Internal_Sym * get_64bit_elf_symbols PARAMS ((FILE *, unsigned long, unsigned long)); +static int * get_dynamic_data PARAMS ((FILE *, unsigned int)); +static int get_32bit_dynamic_segment PARAMS ((FILE *)); +static int get_64bit_dynamic_segment PARAMS ((FILE *)); #ifdef SUPPORT_DISASSEMBLY static int disassemble_section PARAMS ((Elf32_Internal_Shdr *, FILE *)); #endif @@ -189,6 +196,7 @@ typedef int Elf32_Word; #define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */ #define BYTE_GET(field) byte_get (field, sizeof (field)) +#define BYTE_GET8(field) byte_get (field, -8) #define NUM_ELEM(array) (sizeof (array) / sizeof ((array)[0])) @@ -228,6 +236,11 @@ typedef int Elf32_Word; return 0; \ } +#define GET_ELF_SYMBOLS(file, offset, size) \ + (is_32bit_elf ? get_32bit_elf_symbols (file, offset, size) \ + : get_64bit_elf_symbols (file, offset, size)) + + #ifdef ANSI_PROTOTYPES static void error (const char * message, ...) @@ -284,7 +297,7 @@ warn (va_alist) } #endif -static unsigned long int +static bfd_vma byte_get_little_endian (field, size) unsigned char * field; int size; @@ -298,19 +311,38 @@ byte_get_little_endian (field, size) return ((unsigned int) (field [0])) | (((unsigned int) (field [1])) << 8); + case 8: + /* We want to extract data from an 8 byte wide field and + place it into a 4 byte wide field. Since this is a little + endian source we can juts use the 4 byte extraction code. */ + /* Fall through. */ case 4: return ((unsigned long) (field [0])) | (((unsigned long) (field [1])) << 8) | (((unsigned long) (field [2])) << 16) | (((unsigned long) (field [3])) << 24); + case -8: + /* This is a special case, generated by the BYTE_GET8 macro. + It means that we are loading an 8 byte value from a field + in an external structure into an 8 byte value in a field + in an internal strcuture. */ + return ((bfd_vma) (field [0])) + | (((bfd_vma) (field [1])) << 8) + | (((bfd_vma) (field [2])) << 16) + | (((bfd_vma) (field [3])) << 24) + | (((bfd_vma) (field [4])) << 32) + | (((bfd_vma) (field [5])) << 40) + | (((bfd_vma) (field [6])) << 48) + | (((bfd_vma) (field [7])) << 56); + default: error (_("Unhandled data length: %d\n"), size); - abort(); + abort (); } } -static unsigned long int +static bfd_vma byte_get_big_endian (field, size) unsigned char * field; int size; @@ -329,9 +361,31 @@ byte_get_big_endian (field, size) | (((unsigned long) (field [1])) << 16) | (((unsigned long) (field [0])) << 24); + case 8: + /* Although we are extracing data from an 8 byte wide field, we + are returning only 4 bytes of data. */ + return ((unsigned long) (field [7])) + | (((unsigned long) (field [6])) << 8) + | (((unsigned long) (field [5])) << 16) + | (((unsigned long) (field [4])) << 24); + + case -8: + /* This is a special case, generated by the BYTE_GET8 macro. + It means that we are loading an 8 byte value from a field + in an external structure into an 8 byte value in a field + in an internal strcuture. */ + return ((bfd_vma) (field [7])) + | (((bfd_vma) (field [6])) << 8) + | (((bfd_vma) (field [5])) << 16) + | (((bfd_vma) (field [4])) << 24) + | (((bfd_vma) (field [3])) << 32) + | (((bfd_vma) (field [2])) << 40) + | (((bfd_vma) (field [1])) << 48) + | (((bfd_vma) (field [0])) << 56); + default: error (_("Unhandled data length: %d\n"), size); - abort(); + abort (); } } @@ -374,16 +428,15 @@ guess_is_rela (e_machine) } } -/* Display the contents of the relocation data - found at the specified offset. */ +/* Display the contents of the relocation data found at the specified offset. */ static int dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) - FILE * file; - unsigned long rel_offset; - unsigned long rel_size; - Elf_Internal_Sym * symtab; - char * strtab; - int is_rela; + FILE * file; + unsigned long rel_offset; + unsigned long rel_size; + Elf_Internal_Sym * symtab; + char * strtab; + int is_rela; { unsigned int i; Elf_Internal_Rel * rels; @@ -395,60 +448,123 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) if (is_rela) { - Elf32_External_Rela * erelas; - - GET_DATA_ALLOC (rel_offset, rel_size, erelas, - Elf32_External_Rela *, "relocs"); + if (is_32bit_elf) + { + Elf32_External_Rela * erelas; + + GET_DATA_ALLOC (rel_offset, rel_size, erelas, + Elf32_External_Rela *, "relocs"); + + rel_size = rel_size / sizeof (Elf32_External_Rela); + + relas = (Elf_Internal_Rela *) + malloc (rel_size * sizeof (Elf_Internal_Rela)); - rel_size = rel_size / sizeof (Elf32_External_Rela); + if (relas == NULL) + { + error(_("out of memory parsing relocs")); + return 0; + } + + for (i = 0; i < rel_size; i++) + { + relas[i].r_offset = BYTE_GET (erelas[i].r_offset); + relas[i].r_info = BYTE_GET (erelas[i].r_info); + relas[i].r_addend = BYTE_GET (erelas[i].r_addend); + } - relas = (Elf_Internal_Rela *) malloc (rel_size * - sizeof (Elf_Internal_Rela)); + free (erelas); - if (relas == NULL) - { - error(_("out of memory parsing relocs")); - return 0; + rels = (Elf_Internal_Rel *) relas; } - - for (i = 0; i < rel_size; i++) + else { - relas[i].r_offset = BYTE_GET (erelas[i].r_offset); - relas[i].r_info = BYTE_GET (erelas[i].r_info); - relas[i].r_addend = BYTE_GET (erelas[i].r_addend); - } + Elf64_External_Rela * erelas; + + GET_DATA_ALLOC (rel_offset, rel_size, erelas, + Elf64_External_Rela *, "relocs"); + + rel_size = rel_size / sizeof (Elf64_External_Rela); + + relas = (Elf_Internal_Rela *) + malloc (rel_size * sizeof (Elf_Internal_Rela)); + + if (relas == NULL) + { + error(_("out of memory parsing relocs")); + return 0; + } + + for (i = 0; i < rel_size; i++) + { + relas[i].r_offset = BYTE_GET8 (erelas[i].r_offset); + relas[i].r_info = BYTE_GET8 (erelas[i].r_info); + relas[i].r_addend = BYTE_GET8 (erelas[i].r_addend); + } - free (erelas); + free (erelas); - rels = (Elf_Internal_Rel *) relas; + rels = (Elf_Internal_Rel *) relas; + } } else { - Elf32_External_Rel * erels; - unsigned long saved_rel_size = rel_size; - - GET_DATA_ALLOC (rel_offset, rel_size, erels, - Elf32_External_Rel *, "relocs"); - - rel_size = rel_size / sizeof (Elf32_External_Rel); - - rels = (Elf_Internal_Rel *) malloc (rel_size * - sizeof (Elf_Internal_Rel)); - if (rels == NULL) + if (is_32bit_elf) { - error(_("out of memory parsing relocs")); - return 0; + Elf32_External_Rel * erels; + + GET_DATA_ALLOC (rel_offset, rel_size, erels, + Elf32_External_Rel *, "relocs"); + + rel_size = rel_size / sizeof (Elf32_External_Rel); + + rels = (Elf_Internal_Rel *) + malloc (rel_size * sizeof (Elf_Internal_Rel)); + + if (rels == NULL) + { + error(_("out of memory parsing relocs")); + return 0; + } + + for (i = 0; i < rel_size; i++) + { + rels[i].r_offset = BYTE_GET (erels[i].r_offset); + rels[i].r_info = BYTE_GET (erels[i].r_info); + } + + free (erels); + + relas = (Elf_Internal_Rela *) rels; } - - for (i = 0; i < rel_size; i++) + else { - rels[i].r_offset = BYTE_GET (erels[i].r_offset); - rels[i].r_info = BYTE_GET (erels[i].r_info); + Elf64_External_Rel * erels; + + GET_DATA_ALLOC (rel_offset, rel_size, erels, + Elf64_External_Rel *, "relocs"); + + rel_size = rel_size / sizeof (Elf64_External_Rel); + + rels = (Elf_Internal_Rel *) + malloc (rel_size * sizeof (Elf_Internal_Rel)); + + if (rels == NULL) + { + error(_("out of memory parsing relocs")); + return 0; + } + + for (i = 0; i < rel_size; i++) + { + rels[i].r_offset = BYTE_GET8 (erels[i].r_offset); + rels[i].r_info = BYTE_GET8 (erels[i].r_info); + } + + free (erels); + + relas = (Elf_Internal_Rela *) rels; } - - free (erels); - - relas = (Elf_Internal_Rela *) rels; } if (is_rela) @@ -460,11 +576,12 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) for (i = 0; i < rel_size; i++) { - const char * rtype; - unsigned long offset; - unsigned long info; - int symtab_index; - + const char * rtype; + bfd_vma offset; + bfd_vma info; + bfd_vma symtab_index; + bfd_vma type; + if (is_rela) { offset = relas [i].r_offset; @@ -476,8 +593,24 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) info = rels [i].r_info; } - printf (" %8.8lx %5.5lx ", offset, info); + + if (is_32bit_elf) + { + type = ELF32_R_TYPE (info); + symtab_index = ELF32_R_SYM (info); + } + else + { + type = ELF64_R_TYPE (info); + symtab_index = ELF64_R_SYM (info); + } +#ifdef _bfd_int64_low + printf (" %8.8lx %5.5lx ", _bfd_int64_low (offset), _bfd_int64_low (info)); +#else + printf (" %8.8lx %5.5lx ", offset, info); +#endif + switch (elf_header.e_machine) { default: @@ -485,91 +618,96 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) break; case EM_CYGNUS_M32R: - rtype = elf_m32r_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_m32r_reloc_type (type); break; case EM_386: case EM_486: - rtype = elf_i386_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_i386_reloc_type (type); break; case EM_68K: - rtype = elf_m68k_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_m68k_reloc_type (type); break; case EM_960: - rtype = elf_i960_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_i960_reloc_type (type); break; + case EM_OLD_SPARCV9: + case EM_SPARC32PLUS: + case EM_SPARCV9: case EM_SPARC: - rtype = elf_sparc_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_sparc_reloc_type (type); break; case EM_CYGNUS_V850: - rtype = v850_reloc_type (ELF32_R_TYPE (info)); + rtype = v850_reloc_type (type); break; case EM_CYGNUS_D10V: - rtype = elf_d10v_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_d10v_reloc_type (type); break; case EM_CYGNUS_D30V: - rtype = elf_d30v_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_d30v_reloc_type (type); break; case EM_SH: - rtype = elf_sh_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_sh_reloc_type (type); break; case EM_CYGNUS_MN10300: - rtype = elf_mn10300_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_mn10300_reloc_type (type); break; case EM_CYGNUS_MN10200: - rtype = elf_mn10200_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_mn10200_reloc_type (type); break; case EM_CYGNUS_FR30: - rtype = elf_fr30_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_fr30_reloc_type (type); break; case EM_MCORE: - rtype = elf_mcore_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_mcore_reloc_type (type); break; case EM_PPC: - rtype = elf_ppc_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_ppc_reloc_type (type); break; case EM_MIPS: case EM_MIPS_RS4_BE: - rtype = elf_mips_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_mips_reloc_type (type); break; case EM_ALPHA: - rtype = elf_alpha_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_alpha_reloc_type (type); break; case EM_ARM: - rtype = elf_arm_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_arm_reloc_type (type); break; case EM_CYGNUS_ARC: - rtype = elf_arc_reloc_type (ELF32_R_TYPE (info)); + rtype = elf_arc_reloc_type (type); break; case EM_PARISC: - rtype = elf32_hppa_reloc_type (ELF32_R_TYPE (info)); + rtype = elf32_hppa_reloc_type (type); break; } if (rtype == NULL) - printf (_("unrecognised: %-7lx"), ELF32_R_TYPE (info)); +#ifdef _bfd_int64_low + printf (_("unrecognised: %-7lx"), _bfd_int64_low (type)); +#else + printf (_("unrecognised: %-7lx"), type); +#endif else printf ("%-21.21s", rtype); - symtab_index = ELF32_R_SYM (info); - if (symtab_index && symtab != NULL) { Elf_Internal_Sym * psym; @@ -918,22 +1056,6 @@ get_machine_flags (e_flags, e_machine) return buf; } -static char * -get_machine_data (e_data) - unsigned e_data; -{ - static char buff [32]; - - switch (e_data) - { - case ELFDATA2LSB: return _("ELFDATA2LSB (little endian)"); - case ELFDATA2MSB: return _("ELFDATA2MSB (big endian)"); - default: - sprintf (buff, _("<unknown>: %x"), e_data); - return buff; - } -} - static const char * get_mips_segment_type (type) unsigned long type; @@ -1442,8 +1564,6 @@ process_file_header () get_machine_name (elf_header.e_machine)); printf (_(" Version: 0x%lx\n"), (unsigned long) elf_header.e_version); - printf (_(" Data: %s\n"), - get_machine_data (elf_header.e_ident [EI_DATA])); printf (_(" Entry point address: 0x%lx\n"), (unsigned long) elf_header.e_entry); printf (_(" Start of program headers: %ld (bytes into file)\n"), @@ -1466,29 +1586,84 @@ process_file_header () printf (_(" Section header string table index: %ld\n"), (long) elf_header.e_shstrndx); } + + return 1; +} + - /* Test class after dumping header so that at least the header can be - display on 64 bit binaries. */ +static int +get_32bit_program_headers (file, program_headers) + FILE * file; + Elf_Internal_Phdr * program_headers; +{ + Elf32_External_Phdr * phdrs; + Elf32_External_Phdr * external; + Elf32_Internal_Phdr * internal; + unsigned int i; - binary_class = elf_header.e_ident [EI_CLASS]; - if (binary_class != ELFCLASS32) + GET_DATA_ALLOC (elf_header.e_phoff, + elf_header.e_phentsize * elf_header.e_phnum, + phdrs, Elf32_External_Phdr *, "program headers"); + + for (i = 0, internal = program_headers, external = phdrs; + i < elf_header.e_phnum; + i ++, internal ++, external ++) { - error (_("Not a 32 bit ELF file\n")); - return 0; + internal->p_type = BYTE_GET (external->p_type); + internal->p_offset = BYTE_GET (external->p_offset); + internal->p_vaddr = BYTE_GET (external->p_vaddr); + internal->p_paddr = BYTE_GET (external->p_paddr); + internal->p_filesz = BYTE_GET (external->p_filesz); + internal->p_memsz = BYTE_GET (external->p_memsz); + internal->p_flags = BYTE_GET (external->p_flags); + internal->p_align = BYTE_GET (external->p_align); } + free (phdrs); + return 1; } +static int +get_64bit_program_headers (file, program_headers) + FILE * file; + Elf_Internal_Phdr * program_headers; +{ + Elf64_External_Phdr * phdrs; + Elf64_External_Phdr * external; + Elf64_Internal_Phdr * internal; + unsigned int i; + + GET_DATA_ALLOC (elf_header.e_phoff, + elf_header.e_phentsize * elf_header.e_phnum, + phdrs, Elf64_External_Phdr *, "program headers"); + + for (i = 0, internal = program_headers, external = phdrs; + i < elf_header.e_phnum; + i ++, internal ++, external ++) + { + internal->p_type = BYTE_GET (external->p_type); + internal->p_flags = BYTE_GET (external->p_flags); + internal->p_offset = BYTE_GET8 (external->p_offset); + internal->p_vaddr = BYTE_GET8 (external->p_vaddr); + internal->p_paddr = BYTE_GET8 (external->p_paddr); + internal->p_filesz = BYTE_GET8 (external->p_filesz); + internal->p_memsz = BYTE_GET8 (external->p_memsz); + internal->p_align = BYTE_GET8 (external->p_align); + } + + free (phdrs); + + return 1; +} static int process_program_headers (file) FILE * file; { - Elf32_External_Phdr * phdrs; - Elf32_Internal_Phdr * program_headers; - Elf32_Internal_Phdr * segment; - unsigned int i; + Elf_Internal_Phdr * program_headers; + Elf_Internal_Phdr * segment; + unsigned int i; if (elf_header.e_phnum == 0) { @@ -1505,12 +1680,8 @@ process_program_headers (file) elf_header.e_phnum, (unsigned long) elf_header.e_phoff); } - GET_DATA_ALLOC (elf_header.e_phoff, - elf_header.e_phentsize * elf_header.e_phnum, - phdrs, Elf32_External_Phdr *, "program headers"); - - program_headers = (Elf32_Internal_Phdr *) malloc - (elf_header.e_phnum * sizeof (Elf32_Internal_Phdr)); + program_headers = (Elf_Internal_Phdr *) malloc + (elf_header.e_phnum * sizeof (Elf_Internal_Phdr)); if (program_headers == NULL) { @@ -1518,22 +1689,17 @@ process_program_headers (file) return 0; } - for (i = 0, segment = program_headers; - i < elf_header.e_phnum; - i ++, segment ++) + if (is_32bit_elf) + i = get_32bit_program_headers (file, program_headers); + else + i = get_64bit_program_headers (file, program_headers); + + if (i == 0) { - segment->p_type = BYTE_GET (phdrs[i].p_type); - segment->p_offset = BYTE_GET (phdrs[i].p_offset); - segment->p_vaddr = BYTE_GET (phdrs[i].p_vaddr); - segment->p_paddr = BYTE_GET (phdrs[i].p_paddr); - segment->p_filesz = BYTE_GET (phdrs[i].p_filesz); - segment->p_memsz = BYTE_GET (phdrs[i].p_memsz); - segment->p_flags = BYTE_GET (phdrs[i].p_flags); - segment->p_align = BYTE_GET (phdrs[i].p_align); + free (program_headers); + return 0; } - - free (phdrs); - + if (do_segments) { printf @@ -1615,8 +1781,8 @@ process_program_headers (file) for (i = 0; i < elf_header.e_phnum; i++) { - int j; - Elf32_Internal_Shdr * section; + int j; + Elf_Internal_Shdr * section; segment = program_headers + i; section = section_headers; @@ -1649,7 +1815,7 @@ process_program_headers (file) static int -get_section_headers (file) +get_32bit_section_headers (file) FILE * file; { Elf32_External_Shdr * shdrs; @@ -1660,8 +1826,8 @@ get_section_headers (file) elf_header.e_shentsize * elf_header.e_shnum, shdrs, Elf32_External_Shdr *, "section headers"); - section_headers = (Elf32_Internal_Shdr *) malloc - (elf_header.e_shnum * sizeof (Elf32_Internal_Shdr)); + section_headers = (Elf_Internal_Shdr *) malloc + (elf_header.e_shnum * sizeof (Elf_Internal_Shdr)); if (section_headers == NULL) { @@ -1690,8 +1856,50 @@ get_section_headers (file) return 1; } +static int +get_64bit_section_headers (file) + FILE * file; +{ + Elf64_External_Shdr * shdrs; + Elf64_Internal_Shdr * internal; + unsigned int i; + + GET_DATA_ALLOC (elf_header.e_shoff, + elf_header.e_shentsize * elf_header.e_shnum, + shdrs, Elf64_External_Shdr *, "section headers"); + + section_headers = (Elf_Internal_Shdr *) malloc + (elf_header.e_shnum * sizeof (Elf_Internal_Shdr)); + + if (section_headers == NULL) + { + error (_("Out of memory\n")); + return 0; + } + + for (i = 0, internal = section_headers; + i < elf_header.e_shnum; + i ++, internal ++) + { + internal->sh_name = BYTE_GET (shdrs[i].sh_name); + internal->sh_type = BYTE_GET (shdrs[i].sh_type); + internal->sh_flags = BYTE_GET8 (shdrs[i].sh_flags); + internal->sh_addr = BYTE_GET8 (shdrs[i].sh_addr); + internal->sh_size = BYTE_GET8 (shdrs[i].sh_size); + internal->sh_entsize = BYTE_GET8 (shdrs[i].sh_entsize); + internal->sh_link = BYTE_GET (shdrs[i].sh_link); + internal->sh_info = BYTE_GET (shdrs[i].sh_info); + internal->sh_offset = BYTE_GET (shdrs[i].sh_offset); + internal->sh_addralign = BYTE_GET (shdrs[i].sh_addralign); + } + + free (shdrs); + + return 1; +} + static Elf_Internal_Sym * -get_elf_symbols (file, offset, number) +get_32bit_elf_symbols (file, offset, number) FILE * file; unsigned long offset; unsigned long number; @@ -1731,12 +1939,53 @@ get_elf_symbols (file, offset, number) return isyms; } +static Elf_Internal_Sym * +get_64bit_elf_symbols (file, offset, number) + FILE * file; + unsigned long offset; + unsigned long number; +{ + Elf64_External_Sym * esyms; + Elf_Internal_Sym * isyms; + Elf_Internal_Sym * psym; + unsigned int j; + + GET_DATA_ALLOC (offset, number * sizeof (Elf64_External_Sym), + esyms, Elf64_External_Sym *, "symbols"); + + isyms = (Elf_Internal_Sym *) malloc (number * sizeof (Elf_Internal_Sym)); + + if (isyms == NULL) + { + error (_("Out of memory\n")); + free (esyms); + + return NULL; + } + + for (j = 0, psym = isyms; + j < number; + j ++, psym ++) + { + psym->st_name = BYTE_GET (esyms[j].st_name); + psym->st_info = BYTE_GET (esyms[j].st_info); + psym->st_other = BYTE_GET (esyms[j].st_other); + psym->st_shndx = BYTE_GET (esyms[j].st_shndx); + psym->st_value = BYTE_GET8 (esyms[j].st_value); + psym->st_size = BYTE_GET8 (esyms[j].st_size); + } + + free (esyms); + + return isyms; +} + static int process_section_headers (file) FILE * file; { - Elf32_Internal_Shdr * section; - int i; + Elf_Internal_Shdr * section; + int i; section_headers = NULL; @@ -1749,10 +1998,15 @@ process_section_headers (file) } if (do_sections && !do_header) - printf (_("There are %d section headers, starting at offset %lx:\n"), + printf (_("There are %d section headers, starting at offset 0x%lx:\n"), elf_header.e_shnum, (unsigned long) elf_header.e_shoff); - if (! get_section_headers (file)) + if (is_32bit_elf) + { + if (! get_32bit_section_headers (file)) + return 0; + } + else if (! get_64bit_section_headers (file)) return 0; /* Read in the string table, so that we have names to display. */ @@ -1773,6 +2027,7 @@ process_section_headers (file) dynamic_symbols = NULL; dynamic_strings = NULL; dynamic_syminfo = NULL; + for (i = 0, section = section_headers; i < elf_header.e_shnum; i ++, section ++) @@ -1787,9 +2042,9 @@ process_section_headers (file) continue; } - dynamic_symbols = get_elf_symbols - (file, section->sh_offset, - section->sh_size / section->sh_entsize); + dynamic_symbols = + GET_ELF_SYMBOLS (file, section->sh_offset, + section->sh_size / section->sh_entsize); } else if (section->sh_type == SHT_STRTAB && strcmp (name, ".dynstr") == 0) @@ -1956,8 +2211,9 @@ process_relocs (file) symsec = section_headers + section->sh_link; - symtab = get_elf_symbols (file, symsec->sh_offset, - symsec->sh_size / symsec->sh_entsize); + symtab = + GET_ELF_SYMBOLS (file, symsec->sh_offset, + symsec->sh_size / symsec->sh_entsize); if (symtab == NULL) continue; @@ -2055,31 +2311,63 @@ dynamic_segment_mips_val (entry) } } -/* Parse the dynamic segment */ static int -process_dynamic_segment (file) +get_32bit_dynamic_segment (file) FILE * file; { - Elf_Internal_Dyn * entry; - Elf32_External_Dyn * edyn; - unsigned int i; + Elf32_External_Dyn * edyn; + Elf_Internal_Dyn * entry; + bfd_size_type i; + + GET_DATA_ALLOC (dynamic_addr, dynamic_size, + edyn, Elf32_External_Dyn *, "dynamic segment"); + + /* SGI's ELF has more than one section in the DYNAMIC segment. Determine + how large this .dynamic is now. We can do this even before the byte + swapping since the DT_NULL tag is recognizable. */ + dynamic_size = 0; + while (*(Elf32_Word *) edyn [dynamic_size++].d_tag != DT_NULL) + ; - if (dynamic_size == 0) + dynamic_segment = (Elf_Internal_Dyn *) + malloc (dynamic_size * sizeof (Elf_Internal_Dyn)); + + if (dynamic_segment == NULL) { - if (do_dynamic) - printf (_("\nThere is no dynamic segment in this file.\n")); + error (_("Out of memory\n")); + free (edyn); + return 0; + } - return 1; + for (i = 0, entry = dynamic_segment; + i < dynamic_size; + i ++, entry ++) + { + entry->d_tag = BYTE_GET (edyn [i].d_tag); + entry->d_un.d_val = BYTE_GET (edyn [i].d_un.d_val); } + free (edyn); + + return 1; +} + +static int +get_64bit_dynamic_segment (file) + FILE * file; +{ + Elf64_External_Dyn * edyn; + Elf_Internal_Dyn * entry; + bfd_size_type i; + GET_DATA_ALLOC (dynamic_addr, dynamic_size, - edyn, Elf32_External_Dyn *, "dynamic segment"); + edyn, Elf64_External_Dyn *, "dynamic segment"); /* SGI's ELF has more than one section in the DYNAMIC segment. Determine - how large .dynamic is now. We can do this even before the byte + how large this .dynamic is now. We can do this even before the byte swapping since the DT_NULL tag is recognizable. */ dynamic_size = 0; - while (*(Elf32_Word *) edyn[dynamic_size++].d_tag != DT_NULL) + while (*(bfd_vma *) edyn [dynamic_size ++].d_tag != DT_NULL) ; dynamic_segment = (Elf_Internal_Dyn *) @@ -2096,12 +2384,39 @@ process_dynamic_segment (file) i < dynamic_size; i ++, entry ++) { - entry->d_tag = BYTE_GET (edyn [i].d_tag); - entry->d_un.d_val = BYTE_GET (edyn [i].d_un.d_val); + entry->d_tag = BYTE_GET8 (edyn [i].d_tag); + entry->d_un.d_val = BYTE_GET8 (edyn [i].d_un.d_val); } free (edyn); + return 1; +} + +/* Parse and display the contents of the dynamic segment. */ +static int +process_dynamic_segment (file) + FILE * file; +{ + Elf_Internal_Dyn * entry; + bfd_size_type i; + + if (dynamic_size == 0) + { + if (do_dynamic) + printf (_("\nThere is no dynamic segment in this file.\n")); + + return 1; + } + + if (is_32bit_elf) + { + if (! get_32bit_dynamic_segment (file)) + return 0; + } + else if (! get_64bit_dynamic_segment (file)) + return 0; + /* Find the appropriate symbol table. */ if (dynamic_symbols == NULL) { @@ -2121,13 +2436,15 @@ process_dynamic_segment (file) we default to reading in the entire file (!) and processing that. This is overkill, I know, but it should work. */ - offset = entry->d_un.d_val - loadaddr; if (fseek (file, 0, SEEK_END)) error (_("Unable to seek to end of file!")); - num_syms = (ftell (file) - offset) / sizeof (Elf32_External_Sym); + if (is_32bit_elf) + num_syms = (ftell (file) - offset) / sizeof (Elf32_External_Sym); + else + num_syms = (ftell (file) - offset) / sizeof (Elf64_External_Sym); if (num_syms < 1) { @@ -2135,7 +2452,7 @@ process_dynamic_segment (file) continue; } - dynamic_symbols = get_elf_symbols (file, offset, num_syms); + dynamic_symbols = GET_ELF_SYMBOLS (file, offset, num_syms); } } @@ -2201,8 +2518,8 @@ process_dynamic_segment (file) if (dynamic_syminfo_offset != 0 && syminsz != 0) { - Elf_External_Syminfo *extsyminfo; - Elf_Internal_Syminfo *syminfo; + Elf_External_Syminfo * extsyminfo; + Elf_Internal_Syminfo * syminfo; /* There is a syminfo section. Read the data. */ GET_DATA_ALLOC (dynamic_syminfo_offset, syminsz, extsyminfo, @@ -2754,9 +3071,8 @@ process_version_sections (file) found = 1; - symbols = get_elf_symbols - (file, link_section->sh_offset, - link_section->sh_size / link_section->sh_entsize); + symbols = GET_ELF_SYMBOLS (file, link_section->sh_offset, + link_section->sh_size / link_section->sh_entsize); string_sec = section_headers + link_section->sh_link; @@ -3244,7 +3560,7 @@ process_symbol_table (file) fputs (_(" Num: Value Size Type Bind Ot Ndx Name\n"), stdout); - symtab = get_elf_symbols (file, section->sh_offset, + symtab = GET_ELF_SYMBOLS (file, section->sh_offset, section->sh_size / section->sh_entsize); if (symtab == NULL) continue; @@ -3561,8 +3877,8 @@ dump_section (section, file) Elf32_Internal_Shdr * section; FILE * file; { - int bytes; - int addr; + bfd_size_type bytes; + bfd_vma addr; unsigned char * data; unsigned char * start; @@ -3596,6 +3912,7 @@ dump_section (section, file) switch (elf_header.e_ident [EI_DATA]) { + default: case ELFDATA2LSB: for (j = 15; j >= 0; j --) { @@ -5209,9 +5526,9 @@ process_mips_fpe_exception (mask) static int process_mips_specific (file) - FILE *file; + FILE * file; { - Elf_Internal_Dyn *entry; + Elf_Internal_Dyn * entry; size_t liblist_offset = 0; size_t liblistno = 0; size_t conflictsno = 0; @@ -5247,7 +5564,7 @@ process_mips_specific (file) if (liblist_offset != 0 && liblistno != 0 && do_dynamic) { - Elf32_External_Lib *elib; + Elf32_External_Lib * elib; size_t cnt; GET_DATA_ALLOC (liblist_offset, liblistno * sizeof (Elf32_External_Lib), @@ -5315,10 +5632,10 @@ process_mips_specific (file) if (options_offset != 0) { - Elf_External_Options *eopt; - Elf_Internal_Shdr *sect = section_headers; - Elf_Internal_Options *iopt; - Elf_Internal_Options *option; + Elf_External_Options * eopt; + Elf_Internal_Shdr * sect = section_headers; + Elf_Internal_Options * iopt; + Elf_Internal_Options * option; size_t offset; int cnt; @@ -5341,7 +5658,7 @@ process_mips_specific (file) option = iopt; while (offset < sect->sh_size) { - Elf_External_Options *eoption; + Elf_External_Options * eoption; eoption = (Elf_External_Options *) ((char *) eopt + offset); @@ -5395,16 +5712,16 @@ process_mips_specific (file) else { /* 64 bit form. */ - Elf64_External_RegInfo *ereg; + Elf64_External_RegInfo * ereg; Elf64_Internal_RegInfo reginfo; ereg = (Elf64_External_RegInfo *) (option + 1); - reginfo.ri_gprmask = BYTE_GET (ereg->ri_gprmask); + reginfo.ri_gprmask = BYTE_GET (ereg->ri_gprmask); reginfo.ri_cprmask[0] = BYTE_GET (ereg->ri_cprmask[0]); reginfo.ri_cprmask[1] = BYTE_GET (ereg->ri_cprmask[1]); reginfo.ri_cprmask[2] = BYTE_GET (ereg->ri_cprmask[2]); reginfo.ri_cprmask[3] = BYTE_GET (ereg->ri_cprmask[3]); - reginfo.ri_gp_value = BYTE_GET (ereg->ri_gp_value); + reginfo.ri_gp_value = BYTE_GET8 (ereg->ri_gp_value); printf ("GPR %08lx GP 0x", reginfo.ri_gprmask); @@ -5509,9 +5826,9 @@ process_mips_specific (file) if (conflicts_offset != 0 && conflictsno != 0) { - Elf32_External_Conflict *econf32; - Elf64_External_Conflict *econf64; - Elf32_Conflict *iconf; + Elf32_External_Conflict * econf32; + Elf64_External_Conflict * econf64; + Elf32_Conflict * iconf; size_t cnt; if (dynamic_symbols == NULL) @@ -5527,7 +5844,7 @@ process_mips_specific (file) return 0; } - if (binary_class == ELFCLASS32) + if (is_32bit_elf) { GET_DATA_ALLOC (conflicts_offset, conflictsno * sizeof (*econf32), econf32, Elf32_External_Conflict *, "conflict"); @@ -5565,7 +5882,7 @@ process_mips_specific (file) static int process_arch_specific (file) - FILE *file; + FILE * file; { switch (elf_header.e_machine) { @@ -5583,31 +5900,65 @@ static int get_file_header (file) FILE * file; { - Elf32_External_Ehdr ehdr; - - if (fread (& ehdr, sizeof (ehdr), 1, file) != 1) + /* Read in the identity array. */ + if (fread (elf_header.e_ident, EI_NIDENT, 1, file) != 1) return 0; - memcpy (elf_header.e_ident, ehdr.e_ident, EI_NIDENT); + /* Determine how to read the rest of the header. */ + switch (elf_header.e_ident [EI_DATA]) + { + default: /* fall through */ + case ELFDATANONE: /* fall through */ + case ELFDATA2LSB: byte_get = byte_get_little_endian; break; + case ELFDATA2MSB: byte_get = byte_get_big_endian; break; + } + + /* For now we only support 32 bit and 64 bit ELF files. */ + is_32bit_elf = (elf_header.e_ident [EI_CLASS] != ELFCLASS64); + + /* Read in the rest of the header. */ + if (is_32bit_elf) + { + Elf32_External_Ehdr ehdr32; - if (elf_header.e_ident [EI_DATA] == ELFDATA2LSB) - byte_get = byte_get_little_endian; + if (fread (ehdr32.e_type, sizeof (ehdr32) - EI_NIDENT, 1, file) != 1) + return 0; + + elf_header.e_type = BYTE_GET (ehdr32.e_type); + elf_header.e_machine = BYTE_GET (ehdr32.e_machine); + elf_header.e_version = BYTE_GET (ehdr32.e_version); + elf_header.e_entry = BYTE_GET (ehdr32.e_entry); + elf_header.e_phoff = BYTE_GET (ehdr32.e_phoff); + elf_header.e_shoff = BYTE_GET (ehdr32.e_shoff); + elf_header.e_flags = BYTE_GET (ehdr32.e_flags); + elf_header.e_ehsize = BYTE_GET (ehdr32.e_ehsize); + elf_header.e_phentsize = BYTE_GET (ehdr32.e_phentsize); + elf_header.e_phnum = BYTE_GET (ehdr32.e_phnum); + elf_header.e_shentsize = BYTE_GET (ehdr32.e_shentsize); + elf_header.e_shnum = BYTE_GET (ehdr32.e_shnum); + elf_header.e_shstrndx = BYTE_GET (ehdr32.e_shstrndx); + } else - byte_get = byte_get_big_endian; - - elf_header.e_entry = BYTE_GET (ehdr.e_entry); - elf_header.e_phoff = BYTE_GET (ehdr.e_phoff); - elf_header.e_shoff = BYTE_GET (ehdr.e_shoff); - elf_header.e_version = BYTE_GET (ehdr.e_version); - elf_header.e_flags = BYTE_GET (ehdr.e_flags); - elf_header.e_type = BYTE_GET (ehdr.e_type); - elf_header.e_machine = BYTE_GET (ehdr.e_machine); - elf_header.e_ehsize = BYTE_GET (ehdr.e_ehsize); - elf_header.e_phentsize = BYTE_GET (ehdr.e_phentsize); - elf_header.e_phnum = BYTE_GET (ehdr.e_phnum); - elf_header.e_shentsize = BYTE_GET (ehdr.e_shentsize); - elf_header.e_shnum = BYTE_GET (ehdr.e_shnum); - elf_header.e_shstrndx = BYTE_GET (ehdr.e_shstrndx); + { + Elf64_External_Ehdr ehdr64; + + if (fread (ehdr64.e_type, sizeof (ehdr64) - EI_NIDENT, 1, file) != 1) + return 0; + + elf_header.e_type = BYTE_GET (ehdr64.e_type); + elf_header.e_machine = BYTE_GET (ehdr64.e_machine); + elf_header.e_version = BYTE_GET (ehdr64.e_version); + elf_header.e_entry = BYTE_GET8 (ehdr64.e_entry); + elf_header.e_phoff = BYTE_GET8 (ehdr64.e_phoff); + elf_header.e_shoff = BYTE_GET8 (ehdr64.e_shoff); + elf_header.e_flags = BYTE_GET (ehdr64.e_flags); + elf_header.e_ehsize = BYTE_GET (ehdr64.e_ehsize); + elf_header.e_phentsize = BYTE_GET (ehdr64.e_phentsize); + elf_header.e_phnum = BYTE_GET (ehdr64.e_phnum); + elf_header.e_shentsize = BYTE_GET (ehdr64.e_shentsize); + elf_header.e_shnum = BYTE_GET (ehdr64.e_shnum); + elf_header.e_shstrndx = BYTE_GET (ehdr64.e_shstrndx); + } return 1; } @@ -5710,8 +6061,8 @@ process_file (file_name) #ifdef SUPPORT_DISASSEMBLY /* Needed by the i386 disassembler. For extra credit, someone could -fix this so that we insert symbolic addresses here, esp for GOT/PLT -symbols */ + fix this so that we insert symbolic addresses here, esp for GOT/PLT + symbols */ void print_address (unsigned int addr, FILE * outfile) |