* readelf.c (eh_addr_size): New variable.
(find_section): Move earlier in file. Return empty sections too. (process_program_headers): Use find_section to find .dynamic. (process_section_headers): Initialize eh_addr_size. (dump_ia64_unwind, slurp_ia64_unwind_table, ia64_process_unwind) (dump_hppa_unwind, slurp_hppa_unwind_table, hppa_process_unwind) (display_debug_frames): Use it instead of local addr_size variable. (size_of_encoded_value): Get pointer size from eh_addr_size rather than is_32bit_elf.
This commit is contained in:
Richard Sandiford
parent
c46f8c5116
commit
89fac5e3c3
@ -1,3 +1,15 @@
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2005-01-31 Richard Sandiford <rsandifo@redhat.com>
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* readelf.c (eh_addr_size): New variable.
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(find_section): Move earlier in file. Return empty sections too.
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(process_program_headers): Use find_section to find .dynamic.
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(process_section_headers): Initialize eh_addr_size.
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(dump_ia64_unwind, slurp_ia64_unwind_table, ia64_process_unwind)
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(dump_hppa_unwind, slurp_hppa_unwind_table, hppa_process_unwind)
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(display_debug_frames): Use it instead of local addr_size variable.
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(size_of_encoded_value): Get pointer size from eh_addr_size rather
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than is_32bit_elf.
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2005-01-31 Andrew Cagney <cagney@gnu.org>
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* configure: Regenerate to track ../gettext.m4.
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@ -170,6 +170,7 @@ int do_notes;
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int is_32bit_elf;
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int have_frame_base;
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int need_base_address;
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bfd_vma eh_addr_size;
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struct group_list
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{
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@ -643,6 +644,20 @@ byte_put_big_endian (unsigned char *field, bfd_vma value, int size)
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}
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}
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/* Return a pointer to section NAME, or NULL if no such section exists. */
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static Elf_Internal_Shdr *
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find_section (const char *name)
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{
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unsigned int i;
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for (i = 0; i < elf_header.e_shnum; i++)
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if (streq (SECTION_NAME (section_headers + i), name))
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return section_headers + i;
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return NULL;
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}
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/* Guess the relocation size commonly used by the specific machines. */
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static int
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@ -3284,15 +3299,9 @@ process_program_headers (FILE *file)
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if (section_headers != NULL)
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{
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Elf_Internal_Shdr *sec;
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unsigned int j;
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for (j = 0, sec = section_headers;
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j < elf_header.e_shnum;
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j++, sec++)
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if (streq (SECTION_NAME (sec), ".dynamic"))
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break;
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if (j == elf_header.e_shnum || sec->sh_size == 0)
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sec = find_section (".dynamic");
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if (sec == NULL || sec->sh_size == 0)
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{
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error (_("no .dynamic section in the dynamic segment"));
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break;
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@ -3716,6 +3725,26 @@ process_section_headers (FILE *file)
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dynamic_syminfo = NULL;
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symtab_shndx_hdr = NULL;
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eh_addr_size = is_32bit_elf ? 4 : 8;
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switch (elf_header.e_machine)
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{
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case EM_MIPS:
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case EM_MIPS_RS3_LE:
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/* The 64-bit MIPS EABI uses a combination of 32-bit ELF and 64-bit
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FDE addresses. However, the ABI also has a semi-official ILP32
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variant for which the normal FDE address size rules apply.
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GCC 4.0 marks EABI64 objects with a dummy .gcc_compiled_longXX
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section, where XX is the size of longs in bits. Unfortunately,
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earlier compilers provided no way of distinguishing ILP32 objects
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from LP64 objects, so if there's any doubt, we should assume that
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the official LP64 form is being used. */
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if ((elf_header.e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64
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&& find_section (".gcc_compiled_long32") == NULL)
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eh_addr_size = 8;
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break;
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}
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for (i = 0, section = section_headers;
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i < elf_header.e_shnum;
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i++, section++)
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@ -4301,12 +4330,9 @@ find_symbol_for_address (Elf_Internal_Sym *symtab,
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static void
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dump_ia64_unwind (struct ia64_unw_aux_info *aux)
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{
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bfd_vma addr_size;
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struct ia64_unw_table_entry *tp;
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int in_body;
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addr_size = is_32bit_elf ? 4 : 8;
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for (tp = aux->table; tp < aux->table + aux->table_len; ++tp)
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{
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bfd_vma stamp;
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@ -4343,7 +4369,7 @@ dump_ia64_unwind (struct ia64_unw_aux_info *aux)
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(unsigned long) ((stamp & UNW_FLAG_MASK) >> 32),
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UNW_FLAG_EHANDLER (stamp) ? " ehandler" : "",
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UNW_FLAG_UHANDLER (stamp) ? " uhandler" : "",
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(unsigned long) (addr_size * UNW_LENGTH (stamp)));
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(unsigned long) (eh_addr_size * UNW_LENGTH (stamp)));
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if (UNW_VER (stamp) != 1)
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{
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@ -4352,7 +4378,7 @@ dump_ia64_unwind (struct ia64_unw_aux_info *aux)
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}
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in_body = 0;
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for (dp = head + 8; dp < head + 8 + addr_size * UNW_LENGTH (stamp);)
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for (dp = head + 8; dp < head + 8 + eh_addr_size * UNW_LENGTH (stamp);)
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dp = unw_decode (dp, in_body, & in_body);
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}
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}
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@ -4362,7 +4388,7 @@ slurp_ia64_unwind_table (FILE *file,
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struct ia64_unw_aux_info *aux,
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Elf_Internal_Shdr *sec)
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{
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unsigned long size, addr_size, nrelas, i;
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unsigned long size, nrelas, i;
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Elf_Internal_Phdr *seg;
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struct ia64_unw_table_entry *tep;
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Elf_Internal_Shdr *relsec;
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@ -4371,8 +4397,6 @@ slurp_ia64_unwind_table (FILE *file,
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Elf_Internal_Sym *sym;
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const char *relname;
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addr_size = is_32bit_elf ? 4 : 8;
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/* First, find the starting address of the segment that includes
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this section: */
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@ -4403,8 +4427,9 @@ slurp_ia64_unwind_table (FILE *file,
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if (!table)
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return 0;
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tep = aux->table = xmalloc (size / (3 * addr_size) * sizeof (aux->table[0]));
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for (tp = table; tp < table + size; tp += 3 * addr_size, ++tep)
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aux->table = xmalloc (size / (3 * eh_addr_size) * sizeof (aux->table[0]));
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tep = aux->table;
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for (tp = table; tp < table + size; tp += 3 * eh_addr_size, ++tep)
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{
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tep->start.section = SHN_UNDEF;
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tep->end.section = SHN_UNDEF;
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@ -4460,9 +4485,9 @@ slurp_ia64_unwind_table (FILE *file,
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continue;
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}
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i = rp->r_offset / (3 * addr_size);
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i = rp->r_offset / (3 * eh_addr_size);
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switch (rp->r_offset/addr_size % 3)
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switch (rp->r_offset/eh_addr_size % 3)
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{
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case 0:
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aux->table[i].start.section = sym->st_shndx;
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@ -4484,7 +4509,7 @@ slurp_ia64_unwind_table (FILE *file,
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free (rela);
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}
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aux->table_len = size / (3 * addr_size);
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aux->table_len = size / (3 * eh_addr_size);
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return 1;
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}
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@ -4492,13 +4517,11 @@ static int
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ia64_process_unwind (FILE *file)
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{
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Elf_Internal_Shdr *sec, *unwsec = NULL, *strsec;
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unsigned long i, addr_size, unwcount = 0, unwstart = 0;
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unsigned long i, unwcount = 0, unwstart = 0;
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struct ia64_unw_aux_info aux;
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memset (& aux, 0, sizeof (aux));
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addr_size = is_32bit_elf ? 4 : 8;
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for (i = 0, sec = section_headers; i < elf_header.e_shnum; ++i, ++sec)
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{
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if (sec->sh_type == SHT_SYMTAB)
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@ -4602,7 +4625,7 @@ ia64_process_unwind (FILE *file)
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printf (_(" at offset 0x%lx contains %lu entries:\n"),
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(unsigned long) unwsec->sh_offset,
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(unsigned long) (unwsec->sh_size / (3 * addr_size)));
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(unsigned long) (unwsec->sh_size / (3 * eh_addr_size)));
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(void) slurp_ia64_unwind_table (file, & aux, unwsec);
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@ -4676,10 +4699,8 @@ struct hppa_unw_aux_info
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static void
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dump_hppa_unwind (struct hppa_unw_aux_info *aux)
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{
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bfd_vma addr_size;
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struct hppa_unw_table_entry *tp;
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addr_size = is_32bit_elf ? 4 : 8;
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for (tp = aux->table; tp < aux->table + aux->table_len; ++tp)
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{
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bfd_vma offset;
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@ -4746,7 +4767,7 @@ slurp_hppa_unwind_table (FILE *file,
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struct hppa_unw_aux_info *aux,
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Elf_Internal_Shdr *sec)
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{
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unsigned long size, unw_ent_size, addr_size, nrelas, i;
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unsigned long size, unw_ent_size, nrelas, i;
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Elf_Internal_Phdr *seg;
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struct hppa_unw_table_entry *tep;
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Elf_Internal_Shdr *relsec;
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@ -4755,8 +4776,6 @@ slurp_hppa_unwind_table (FILE *file,
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Elf_Internal_Sym *sym;
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const char *relname;
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addr_size = is_32bit_elf ? 4 : 8;
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/* First, find the starting address of the segment that includes
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this section. */
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@ -4788,11 +4807,11 @@ slurp_hppa_unwind_table (FILE *file,
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if (!table)
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return 0;
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unw_ent_size = 2 * addr_size + 8;
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unw_ent_size = 2 * eh_addr_size + 8;
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tep = aux->table = xmalloc (size / unw_ent_size * sizeof (aux->table[0]));
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for (tp = table; tp < table + size; tp += (2 * addr_size + 8), ++tep)
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for (tp = table; tp < table + size; tp += (2 * eh_addr_size + 8), ++tep)
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{
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unsigned int tmp1, tmp2;
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@ -4887,7 +4906,7 @@ slurp_hppa_unwind_table (FILE *file,
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i = rp->r_offset / unw_ent_size;
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switch ((rp->r_offset % unw_ent_size) / addr_size)
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switch ((rp->r_offset % unw_ent_size) / eh_addr_size)
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{
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case 0:
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aux->table[i].start.section = sym->st_shndx;
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@ -4917,13 +4936,11 @@ hppa_process_unwind (FILE *file)
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Elf_Internal_Shdr *unwsec = NULL;
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Elf_Internal_Shdr *strsec;
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Elf_Internal_Shdr *sec;
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unsigned long addr_size;
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unsigned long i;
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memset (& aux, 0, sizeof (aux));
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assert (string_table != NULL);
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addr_size = is_32bit_elf ? 4 : 8;
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for (i = 0, sec = section_headers; i < elf_header.e_shnum; ++i, ++sec)
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{
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@ -4953,7 +4970,7 @@ hppa_process_unwind (FILE *file)
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printf (_(" at offset 0x%lx contains %lu entries:\n"),
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(unsigned long) sec->sh_offset,
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(unsigned long) (sec->sh_size / (2 * addr_size + 8)));
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(unsigned long) (sec->sh_size / (2 * eh_addr_size + 8)));
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slurp_hppa_unwind_table (file, &aux, sec);
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if (aux.table_len > 0)
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@ -7050,26 +7067,6 @@ process_extended_line_op (unsigned char *data, int is_stmt, int pointer_size)
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return len;
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}
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/* Finds section NAME inside FILE and returns a
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pointer to it, or NULL upon failure. */
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static Elf_Internal_Shdr *
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find_section (const char * name)
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{
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Elf_Internal_Shdr *sec;
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unsigned int i;
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for (i = elf_header.e_shnum, sec = section_headers + i - 1;
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i; --i, --sec)
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if (streq (SECTION_NAME (sec), name))
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break;
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if (i && sec && sec->sh_size != 0)
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return sec;
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return NULL;
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}
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static const char *debug_str_contents;
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static bfd_vma debug_str_size;
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@ -9913,7 +9910,7 @@ size_of_encoded_value (int encoding)
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switch (encoding & 0x7)
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{
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default: /* ??? */
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case 0: return is_32bit_elf ? 4 : 8;
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case 0: return eh_addr_size;
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case 2: return 2;
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case 3: return 4;
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case 4: return 8;
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@ -9947,7 +9944,6 @@ display_debug_frames (Elf_Internal_Shdr *section,
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int is_eh = streq (SECTION_NAME (section), ".eh_frame");
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int length_return;
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int max_regs = 0;
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int addr_size = is_32bit_elf ? 4 : 8;
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printf (_("The section %s contains:\n"), SECTION_NAME (section));
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@ -9962,7 +9958,7 @@ display_debug_frames (Elf_Internal_Shdr *section,
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int need_col_headers = 1;
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unsigned char *augmentation_data = NULL;
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unsigned long augmentation_data_len = 0;
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int encoded_ptr_size = addr_size;
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int encoded_ptr_size = eh_addr_size;
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int offset_size;
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int initial_length_size;
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@ -10035,7 +10031,7 @@ display_debug_frames (Elf_Internal_Shdr *section,
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}
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else if (streq (fc->augmentation, "eh"))
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{
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start += addr_size;
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start += eh_addr_size;
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fc->code_factor = LEB ();
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fc->data_factor = SLEB ();
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if (version == 1)
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@ -10515,7 +10511,7 @@ display_debug_frames (Elf_Internal_Shdr *section,
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if (! do_debug_frames_interp)
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{
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printf (" DW_CFA_def_cfa_expression (");
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decode_location_expression (start, addr_size, ul, 0);
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decode_location_expression (start, eh_addr_size, ul, 0);
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printf (")\n");
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}
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fc->cfa_exp = 1;
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@ -10528,7 +10524,7 @@ display_debug_frames (Elf_Internal_Shdr *section,
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if (! do_debug_frames_interp)
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{
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printf (" DW_CFA_expression: r%ld (", reg);
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decode_location_expression (start, addr_size, ul, 0);
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decode_location_expression (start, eh_addr_size, ul, 0);
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printf (")\n");
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}
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fc->col_type[reg] = DW_CFA_expression;
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