diff options
Diffstat (limited to 'binutils/readelf.c')
-rw-r--r-- | binutils/readelf.c | 199 |
1 files changed, 80 insertions, 119 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index 61c085f..ae13b3e 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -276,22 +276,6 @@ static void (*byte_put) (unsigned char *, bfd_vma, int); : ((X)->sh_name >= string_table_length ? "<corrupt>" \ : string_table + (X)->sh_name)) -/* Given st_shndx I, map to section_headers index. */ -#define SECTION_HEADER_INDEX(I) \ - ((I) < SHN_LORESERVE \ - ? (I) \ - : ((I) <= SHN_HIRESERVE \ - ? 0 \ - : (I) - (SHN_HIRESERVE + 1 - SHN_LORESERVE))) - -/* Reverse of the above. */ -#define SECTION_HEADER_NUM(N) \ - ((N) < SHN_LORESERVE \ - ? (N) \ - : (N) + (SHN_HIRESERVE + 1 - SHN_LORESERVE)) - -#define SECTION_HEADER(I) (section_headers + SECTION_HEADER_INDEX (I)) - #define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */ #define BYTE_GET(field) byte_get (field, sizeof (field)) @@ -1302,16 +1286,9 @@ dump_relocations (FILE *file, if (ELF_ST_TYPE (psym->st_info) == STT_SECTION) { - bfd_vma sec_index = (bfd_vma) -1; - - if (psym->st_shndx < SHN_LORESERVE) - sec_index = psym->st_shndx; - else if (psym->st_shndx > SHN_HIRESERVE) - sec_index = psym->st_shndx - (SHN_HIRESERVE + 1 - - SHN_LORESERVE); - - if (sec_index != (bfd_vma) -1) - sec_name = SECTION_NAME (section_headers + sec_index); + if (psym->st_shndx < elf_header.e_shnum) + sec_name + = SECTION_NAME (section_headers + psym->st_shndx); else if (psym->st_shndx == SHN_ABS) sec_name = "ABS"; else if (psym->st_shndx == SHN_COMMON) @@ -3356,31 +3333,26 @@ process_file_header (void) (long) elf_header.e_shentsize); printf (_(" Number of section headers: %ld"), (long) elf_header.e_shnum); - if (section_headers != NULL && elf_header.e_shnum == 0) + if (section_headers != NULL && elf_header.e_shnum == SHN_UNDEF) printf (" (%ld)", (long) section_headers[0].sh_size); putc ('\n', stdout); printf (_(" Section header string table index: %ld"), (long) elf_header.e_shstrndx); - if (section_headers != NULL && elf_header.e_shstrndx == SHN_XINDEX) + if (section_headers != NULL + && elf_header.e_shstrndx == (SHN_XINDEX & 0xffff)) printf (" (%ld)", (long) section_headers[0].sh_link); - else if (elf_header.e_shstrndx != SHN_UNDEF - && (elf_header.e_shstrndx >= elf_header.e_shnum - || (elf_header.e_shstrndx >= SHN_LORESERVE - && elf_header.e_shstrndx <= SHN_HIRESERVE))) + else if (elf_header.e_shstrndx >= elf_header.e_shnum) printf (" <corrupt: out of range>"); putc ('\n', stdout); } if (section_headers != NULL) { - if (elf_header.e_shnum == 0) + if (elf_header.e_shnum == SHN_UNDEF) elf_header.e_shnum = section_headers[0].sh_size; - if (elf_header.e_shstrndx == SHN_XINDEX) + if (elf_header.e_shstrndx == (SHN_XINDEX & 0xffff)) elf_header.e_shstrndx = section_headers[0].sh_link; - else if (elf_header.e_shstrndx != SHN_UNDEF - && (elf_header.e_shstrndx >= elf_header.e_shnum - || (elf_header.e_shstrndx >= SHN_LORESERVE - && elf_header.e_shstrndx <= SHN_HIRESERVE))) + else if (elf_header.e_shstrndx >= elf_header.e_shnum) elf_header.e_shstrndx = SHN_UNDEF; free (section_headers); section_headers = NULL; @@ -3853,7 +3825,7 @@ get_32bit_elf_symbols (FILE *file, Elf_Internal_Shdr *section) shndx = NULL; if (symtab_shndx_hdr != NULL && (symtab_shndx_hdr->sh_link - == (unsigned long) SECTION_HEADER_NUM (section - section_headers))) + == (unsigned long) (section - section_headers))) { shndx = get_data (NULL, file, symtab_shndx_hdr->sh_offset, 1, symtab_shndx_hdr->sh_size, _("symtab shndx")); @@ -3884,9 +3856,11 @@ get_32bit_elf_symbols (FILE *file, Elf_Internal_Shdr *section) psym->st_value = BYTE_GET (esyms[j].st_value); psym->st_size = BYTE_GET (esyms[j].st_size); psym->st_shndx = BYTE_GET (esyms[j].st_shndx); - if (psym->st_shndx == SHN_XINDEX && shndx != NULL) + if (psym->st_shndx == (SHN_XINDEX & 0xffff) && shndx != NULL) psym->st_shndx = byte_get ((unsigned char *) &shndx[j], sizeof (shndx[j])); + else if (psym->st_shndx >= (SHN_LORESERVE & 0xffff)) + psym->st_shndx += SHN_LORESERVE - (SHN_LORESERVE & 0xffff); psym->st_info = BYTE_GET (esyms[j].st_info); psym->st_other = BYTE_GET (esyms[j].st_other); } @@ -3916,7 +3890,7 @@ get_64bit_elf_symbols (FILE *file, Elf_Internal_Shdr *section) shndx = NULL; if (symtab_shndx_hdr != NULL && (symtab_shndx_hdr->sh_link - == (unsigned long) SECTION_HEADER_NUM (section - section_headers))) + == (unsigned long) (section - section_headers))) { shndx = get_data (NULL, file, symtab_shndx_hdr->sh_offset, 1, symtab_shndx_hdr->sh_size, _("symtab shndx")); @@ -3947,9 +3921,11 @@ get_64bit_elf_symbols (FILE *file, Elf_Internal_Shdr *section) 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); - if (psym->st_shndx == SHN_XINDEX && shndx != NULL) + if (psym->st_shndx == (SHN_XINDEX & 0xffff) && shndx != NULL) psym->st_shndx = byte_get ((unsigned char *) &shndx[j], sizeof (shndx[j])); + else if (psym->st_shndx >= (SHN_LORESERVE & 0xffff)) + psym->st_shndx += SHN_LORESERVE - (SHN_LORESERVE & 0xffff); psym->st_value = BYTE_GET (esyms[j].st_value); psym->st_size = BYTE_GET (esyms[j].st_size); } @@ -4195,9 +4171,9 @@ process_section_headers (FILE *file) /* Read in the string table, so that we have names to display. */ if (elf_header.e_shstrndx != SHN_UNDEF - && SECTION_HEADER_INDEX (elf_header.e_shstrndx) < elf_header.e_shnum) + && elf_header.e_shstrndx < elf_header.e_shnum) { - section = SECTION_HEADER (elf_header.e_shstrndx); + section = section_headers + elf_header.e_shstrndx; if (section->sh_size != 0) { @@ -4411,7 +4387,7 @@ process_section_headers (FILE *file) if (do_section_details) { printf (" [%2u] %s\n", - SECTION_HEADER_NUM (i), + i, SECTION_NAME (section)); if (is_32bit_elf || do_wide) printf (" %-15.15s ", @@ -4419,7 +4395,7 @@ process_section_headers (FILE *file) } else printf (" [%2u] %-17.17s %-15.15s ", - SECTION_HEADER_NUM (i), + i, SECTION_NAME (section), get_section_type_name (section->sh_type)); @@ -4642,8 +4618,8 @@ process_section_groups (FILE *file) Elf_Internal_Sym *sym; /* Get the symbol table. */ - if (SECTION_HEADER_INDEX (section->sh_link) >= elf_header.e_shnum - || ((sec = SECTION_HEADER (section->sh_link))->sh_type + if (section->sh_link >= elf_header.e_shnum + || ((sec = section_headers + section->sh_link)->sh_type != SHT_SYMTAB)) { error (_("Bad sh_link in group section `%s'\n"), name); @@ -4662,14 +4638,14 @@ process_section_groups (FILE *file) if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) { - bfd_vma sec_index = SECTION_HEADER_INDEX (sym->st_shndx); - if (sec_index == 0) + if (sym->st_shndx == 0 + || sym->st_shndx >= elf_header.e_shnum) { error (_("Bad sh_info in group section `%s'\n"), name); continue; } - group_name = SECTION_NAME (section_headers + sec_index); + group_name = SECTION_NAME (section_headers + sym->st_shndx); strtab_sec = NULL; if (strtab) free (strtab); @@ -4679,8 +4655,7 @@ process_section_groups (FILE *file) else { /* Get the string table. */ - if (SECTION_HEADER_INDEX (symtab_sec->sh_link) - >= elf_header.e_shnum) + if (symtab_sec->sh_link >= elf_header.e_shnum) { strtab_sec = NULL; if (strtab) @@ -4689,7 +4664,7 @@ process_section_groups (FILE *file) strtab_size = 0; } else if (strtab_sec - != (sec = SECTION_HEADER (symtab_sec->sh_link))) + != (sec = section_headers + symtab_sec->sh_link)) { strtab_sec = sec; if (strtab) @@ -4728,27 +4703,20 @@ process_section_groups (FILE *file) entry = byte_get (indices, 4); indices += 4; - if (SECTION_HEADER_INDEX (entry) >= elf_header.e_shnum) + if (entry >= elf_header.e_shnum) { error (_("section [%5u] in group section [%5u] > maximum section [%5u]\n"), entry, i, elf_header.e_shnum - 1); continue; } - else if (entry >= SHN_LORESERVE && entry <= SHN_HIRESERVE) - { - error (_("invalid section [%5u] in group section [%5u]\n"), - entry, i); - continue; - } - if (section_headers_groups [SECTION_HEADER_INDEX (entry)] - != NULL) + if (section_headers_groups [entry] != NULL) { if (entry) { error (_("section [%5u] in group section [%5u] already in group section [%5u]\n"), entry, i, - section_headers_groups [SECTION_HEADER_INDEX (entry)]->group_index); + section_headers_groups [entry]->group_index); continue; } else @@ -4760,18 +4728,17 @@ process_section_groups (FILE *file) if (!warned) { error (_("section 0 in group section [%5u]\n"), - section_headers_groups [SECTION_HEADER_INDEX (entry)]->group_index); + section_headers_groups [entry]->group_index); warned++; } } } - section_headers_groups [SECTION_HEADER_INDEX (entry)] - = group; + section_headers_groups [entry] = group; if (do_section_groups) { - sec = SECTION_HEADER (entry); + sec = section_headers + entry; printf (" [%5u] %s\n", entry, SECTION_NAME (sec)); } @@ -4903,9 +4870,8 @@ process_relocs (FILE *file) is_rela = section->sh_type == SHT_RELA; - if (section->sh_link - && SECTION_HEADER_INDEX (section->sh_link) - < elf_header.e_shnum) + if (section->sh_link != 0 + && section->sh_link < elf_header.e_shnum) { Elf_Internal_Shdr *symsec; Elf_Internal_Sym *symtab; @@ -4913,7 +4879,7 @@ process_relocs (FILE *file) unsigned long strtablen = 0; char *strtab = NULL; - symsec = SECTION_HEADER (section->sh_link); + symsec = section_headers + section->sh_link; if (symsec->sh_type != SHT_SYMTAB && symsec->sh_type != SHT_DYNSYM) continue; @@ -4924,10 +4890,10 @@ process_relocs (FILE *file) if (symtab == NULL) continue; - if (SECTION_HEADER_INDEX (symsec->sh_link) - < elf_header.e_shnum) + if (symsec->sh_link != 0 + && symsec->sh_link < elf_header.e_shnum) { - strsec = SECTION_HEADER (symsec->sh_link); + strsec = section_headers + symsec->sh_link; strtab = get_data (NULL, file, strsec->sh_offset, 1, strsec->sh_size, @@ -5164,8 +5130,8 @@ slurp_ia64_unwind_table (FILE *file, ++relsec) { if (relsec->sh_type != SHT_RELA - || SECTION_HEADER_INDEX (relsec->sh_info) >= elf_header.e_shnum - || SECTION_HEADER (relsec->sh_info) != sec) + || relsec->sh_info >= elf_header.e_shnum + || section_headers + relsec->sh_info != sec) continue; if (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size, @@ -5223,12 +5189,12 @@ ia64_process_unwind (FILE *file) for (i = 0, sec = section_headers; i < elf_header.e_shnum; ++i, ++sec) { if (sec->sh_type == SHT_SYMTAB - && SECTION_HEADER_INDEX (sec->sh_link) < elf_header.e_shnum) + && sec->sh_link < elf_header.e_shnum) { aux.nsyms = sec->sh_size / sec->sh_entsize; aux.symtab = GET_ELF_SYMBOLS (file, sec); - strsec = SECTION_HEADER (sec->sh_link); + strsec = section_headers + sec->sh_link; aux.strtab = get_data (NULL, file, strsec->sh_offset, 1, strsec->sh_size, _("string table")); aux.strtab_size = aux.strtab != NULL ? strsec->sh_size : 0; @@ -5263,7 +5229,7 @@ ia64_process_unwind (FILE *file) for (; g != NULL; g = g->next) { - sec = SECTION_HEADER (g->section_index); + sec = section_headers + g->section_index; if (streq (SECTION_NAME (sec), ELF_STRING_ia64_unwind_info)) break; @@ -5567,8 +5533,8 @@ slurp_hppa_unwind_table (FILE *file, ++relsec) { if (relsec->sh_type != SHT_RELA - || SECTION_HEADER_INDEX (relsec->sh_info) >= elf_header.e_shnum - || SECTION_HEADER (relsec->sh_info) != sec) + || relsec->sh_info >= elf_header.e_shnum + || section_headers + relsec->sh_info != sec) continue; if (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size, @@ -5629,12 +5595,12 @@ hppa_process_unwind (FILE *file) for (i = 0, sec = section_headers; i < elf_header.e_shnum; ++i, ++sec) { if (sec->sh_type == SHT_SYMTAB - && SECTION_HEADER_INDEX (sec->sh_link) < elf_header.e_shnum) + && sec->sh_link < elf_header.e_shnum) { aux.nsyms = sec->sh_size / sec->sh_entsize; aux.symtab = GET_ELF_SYMBOLS (file, sec); - strsec = SECTION_HEADER (sec->sh_link); + strsec = section_headers + sec->sh_link; aux.strtab = get_data (NULL, file, strsec->sh_offset, 1, strsec->sh_size, _("string table")); aux.strtab_size = aux.strtab != NULL ? strsec->sh_size : 0; @@ -6600,9 +6566,8 @@ process_version_sections (FILE *file) printf_vma (section->sh_addr); printf (_(" Offset: %#08lx Link: %lx (%s)\n"), (unsigned long) section->sh_offset, section->sh_link, - SECTION_HEADER_INDEX (section->sh_link) - < elf_header.e_shnum - ? SECTION_NAME (SECTION_HEADER (section->sh_link)) + section->sh_link < elf_header.e_shnum + ? SECTION_NAME (section_headers + section->sh_link) : "<corrupt>"); edefs = get_data (NULL, file, section->sh_offset, 1, @@ -6703,9 +6668,8 @@ process_version_sections (FILE *file) printf_vma (section->sh_addr); printf (_(" Offset: %#08lx Link to section: %ld (%s)\n"), (unsigned long) section->sh_offset, section->sh_link, - SECTION_HEADER_INDEX (section->sh_link) - < elf_header.e_shnum - ? SECTION_NAME (SECTION_HEADER (section->sh_link)) + section->sh_link < elf_header.e_shnum + ? SECTION_NAME (section_headers + section->sh_link) : "<corrupt>"); eneed = get_data (NULL, file, section->sh_offset, 1, @@ -6798,21 +6762,20 @@ process_version_sections (FILE *file) Elf_Internal_Shdr *string_sec; long off; - if (SECTION_HEADER_INDEX (section->sh_link) >= elf_header.e_shnum) + if (section->sh_link >= elf_header.e_shnum) break; - link_section = SECTION_HEADER (section->sh_link); + link_section = section_headers + section->sh_link; total = section->sh_size / sizeof (Elf_External_Versym); - if (SECTION_HEADER_INDEX (link_section->sh_link) - >= elf_header.e_shnum) + if (link_section->sh_link >= elf_header.e_shnum) break; found = 1; symbols = GET_ELF_SYMBOLS (file, link_section); - string_sec = SECTION_HEADER (link_section->sh_link); + string_sec = section_headers + link_section->sh_link; strtab = get_data (NULL, file, string_sec->sh_offset, 1, string_sec->sh_size, _("version string table")); @@ -6872,9 +6835,8 @@ process_version_sections (FILE *file) check_def = 1; check_need = 1; - if (SECTION_HEADER_INDEX (symbols[cnt + j].st_shndx) - >= elf_header.e_shnum - || SECTION_HEADER (symbols[cnt + j].st_shndx)->sh_type + if (symbols[cnt + j].st_shndx >= elf_header.e_shnum + || section_headers[symbols[cnt + j].st_shndx].sh_type != SHT_NOBITS) { if (symbols[cnt + j].st_shndx == SHN_UNDEF) @@ -7158,11 +7120,11 @@ get_symbol_index_type (unsigned int type) && elf_header.e_machine == EM_MIPS) return "SUND"; else if (type >= SHN_LOPROC && type <= SHN_HIPROC) - sprintf (buff, "PRC[0x%04x]", type); + sprintf (buff, "PRC[0x%04x]", type & 0xffff); else if (type >= SHN_LOOS && type <= SHN_HIOS) - sprintf (buff, "OS [0x%04x]", type); - else if (type >= SHN_LORESERVE && type <= SHN_HIRESERVE) - sprintf (buff, "RSV[0x%04x]", type); + sprintf (buff, "OS [0x%04x]", type & 0xffff); + else if (type >= SHN_LORESERVE) + sprintf (buff, "RSV[0x%04x]", type & 0xffff); else sprintf (buff, "%3d", type); break; @@ -7492,11 +7454,11 @@ process_symbol_table (FILE *file) strtab = string_table; strtab_size = string_table_length; } - else if (SECTION_HEADER_INDEX (section->sh_link) < elf_header.e_shnum) + else if (section->sh_link < elf_header.e_shnum) { Elf_Internal_Shdr *string_sec; - string_sec = SECTION_HEADER (section->sh_link); + string_sec = section_headers + section->sh_link; strtab = get_data (NULL, file, string_sec->sh_offset, 1, string_sec->sh_size, _("string table")); @@ -7541,9 +7503,8 @@ process_symbol_table (FILE *file) vers_data = byte_get (data, 2); - is_nobits = (SECTION_HEADER_INDEX (psym->st_shndx) - < elf_header.e_shnum - && SECTION_HEADER (psym->st_shndx)->sh_type + is_nobits = (psym->st_shndx < elf_header.e_shnum + && section_headers[psym->st_shndx].sh_type == SHT_NOBITS); check_def = (psym->st_shndx != SHN_UNDEF); @@ -7922,10 +7883,10 @@ dump_section_as_strings (Elf_Internal_Shdr *section, FILE *file) ++relsec) { if ((relsec->sh_type != SHT_RELA && relsec->sh_type != SHT_REL) - || SECTION_HEADER_INDEX (relsec->sh_info) >= elf_header.e_shnum - || SECTION_HEADER (relsec->sh_info) != section + || relsec->sh_info >= elf_header.e_shnum + || section_headers + relsec->sh_info != section || relsec->sh_size == 0 - || SECTION_HEADER_INDEX (relsec->sh_link) >= elf_header.e_shnum) + || relsec->sh_link >= elf_header.e_shnum) continue; printf (_(" Note: This section has relocations against it, but these have NOT been applied to this dump.\n")); @@ -8001,10 +7962,10 @@ dump_section_as_bytes (Elf_Internal_Shdr *section, FILE *file) ++relsec) { if ((relsec->sh_type != SHT_RELA && relsec->sh_type != SHT_REL) - || SECTION_HEADER_INDEX (relsec->sh_info) >= elf_header.e_shnum - || SECTION_HEADER (relsec->sh_info) != section + || relsec->sh_info >= elf_header.e_shnum + || section_headers + relsec->sh_info != section || relsec->sh_size == 0 - || SECTION_HEADER_INDEX (relsec->sh_link) >= elf_header.e_shnum) + || relsec->sh_link >= elf_header.e_shnum) continue; printf (_(" NOTE: This section has relocations against it, but these have NOT been applied to this dump.\n")); @@ -8333,10 +8294,10 @@ debug_apply_relocations (void *file, Elf_Internal_Sym *sym; if ((relsec->sh_type != SHT_RELA && relsec->sh_type != SHT_REL) - || SECTION_HEADER_INDEX (relsec->sh_info) >= elf_header.e_shnum - || SECTION_HEADER (relsec->sh_info) != section + || relsec->sh_info >= elf_header.e_shnum + || section_headers + relsec->sh_info != section || relsec->sh_size == 0 - || SECTION_HEADER_INDEX (relsec->sh_link) >= elf_header.e_shnum) + || relsec->sh_link >= elf_header.e_shnum) continue; is_rela = relsec->sh_type == SHT_RELA; @@ -8358,7 +8319,7 @@ debug_apply_relocations (void *file, if (elf_header.e_machine == EM_SH) is_rela = FALSE; - symsec = SECTION_HEADER (relsec->sh_link); + symsec = section_headers + relsec->sh_link; symtab = GET_ELF_SYMBOLS (file, symsec); for (rp = relocs; rp < relocs + num_relocs; ++rp) @@ -9579,7 +9540,7 @@ process_gnu_liblist (FILE *file) switch (section->sh_type) { case SHT_GNU_LIBLIST: - if (SECTION_HEADER_INDEX (section->sh_link) >= elf_header.e_shnum) + if (section->sh_link >= elf_header.e_shnum) break; elib = get_data (NULL, file, section->sh_offset, 1, section->sh_size, @@ -9587,7 +9548,7 @@ process_gnu_liblist (FILE *file) if (elib == NULL) break; - string_sec = SECTION_HEADER (section->sh_link); + string_sec = section_headers + section->sh_link; strtab = get_data (NULL, file, string_sec->sh_offset, 1, string_sec->sh_size, _("liblist string table")); |