diff options
Diffstat (limited to 'binutils/readelf.c')
| -rw-r--r-- | binutils/readelf.c | 2565 |
1 files changed, 1378 insertions, 1187 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index 6cecdc3..d81907c 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -1,5 +1,5 @@ /* readelf.c -- display contents of an ELF format file - Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 + Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. Originally developed by Eric Youngdale <eric@andante.jic.com> @@ -7068,758 +7068,209 @@ find_section (const char * name) return NULL; } -/* This could just be an array of unsigned integers, but I expect - that we will want to extend the structure to contain other - information. */ -typedef struct -{ - unsigned int pointer_size; -} -debug_info; - -static debug_info * debug_information = NULL; -static unsigned int num_debug_info_entries = 0; -static unsigned int last_pointer_size = 0; -static int warned_about_missing_comp_units = FALSE; +static const char *debug_str_contents; +static bfd_vma debug_str_size; -static unsigned int -get_pointer_size_of_comp_unit (unsigned int comp_unit, - const char * section_name) +static void +load_debug_str (FILE *file) { - if (num_debug_info_entries == 0) - { - error (_("%s section needs a populated .debug_info section\n"), - section_name); - return 0; - } + Elf_Internal_Shdr *sec; - if (comp_unit >= num_debug_info_entries) - { - if (!warned_about_missing_comp_units) - { - warn (_("%s section has more comp units than .debug_info section\n"), - section_name); - warn (_("assuming that the pointer size is %d, from the last comp unit in .debug_info\n\n"), - last_pointer_size); - warned_about_missing_comp_units = TRUE; - } - } - else - last_pointer_size = debug_information [comp_unit].pointer_size; + /* If it is already loaded, do nothing. */ + if (debug_str_contents != NULL) + return; - return last_pointer_size; + /* Locate the .debug_str section. */ + sec = find_section (".debug_str"); + if (sec == NULL) + return; -} + debug_str_size = sec->sh_size; -/* Locate and scan the .debug_info section in the file and record the pointer - sizes for the compilation units in it. Usually an executable will have - just one pointer size, but this is not guaranteed, and so we try not to - make any assumptions. Returns zero upon failure, or the number of - compilation units upon success. */ + debug_str_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, + _("debug_str section data")); +} -static unsigned int -get_debug_info (FILE * file) +static void +free_debug_str (void) { - Elf_Internal_Shdr * section; - unsigned char * start; - unsigned char * end; - unsigned char * begin; - unsigned long length; - unsigned int num_units; - unsigned int unit; - - /* Reset the last pointer size so that we can issue correct - error messages if we are displaying the contents of more - than one file. */ - last_pointer_size = 0; - warned_about_missing_comp_units = FALSE; - - /* If we already have the information there is nothing else to do. */ - if (num_debug_info_entries > 0) - return num_debug_info_entries; - - section = find_section (".debug_info"); - if (section == NULL) - return 0; - - length = section->sh_size; - start = get_data (NULL, file, section->sh_offset, section->sh_size, - _("extracting information from .debug_info section")); - if (start == NULL) - return 0; - - end = start + section->sh_size; - /* First scan the section to get the number of comp units. */ - for (begin = start, num_units = 0; begin < end; num_units++) - { - /* Read the first 4 bytes. For a 32-bit DWARF section, this will - be the length. For a 64-bit DWARF section, it'll be the escape - code 0xffffffff followed by an 8 byte length. */ - length = byte_get (begin, 4); + if (debug_str_contents == NULL) + return; - if (length == 0xffffffff) - { - length = byte_get (begin + 4, 8); - begin += length + 12; - } - else - begin += length + 4; - } + free ((char *) debug_str_contents); + debug_str_contents = NULL; + debug_str_size = 0; +} - if (num_units == 0) - { - error (_("No comp units in .debug_info section ?")); - free (start); - return 0; - } +static const char * +fetch_indirect_string (unsigned long offset) +{ + if (debug_str_contents == NULL) + return _("<no .debug_str section>"); - /* Then allocate an array to hold the information. */ - debug_information = malloc (num_units * sizeof * debug_information); - if (debug_information == NULL) - { - error (_("Not enough memory for a debug info array of %u entries"), - num_units); - free (start); - return 0; - } + if (offset > debug_str_size) + return _("<offset is too big>"); - /* Populate the array. */ - for (begin = start, unit = 0; begin < end; unit++) - { - length = byte_get (begin, 4); - if (length == 0xffffffff) - { - /* For 64-bit DWARF, the 1-byte address_size field is 22 bytes - from the start of the section. This is computed as follows: + return debug_str_contents + offset; +} - unit_length: 12 bytes - version: 2 bytes - debug_abbrev_offset: 8 bytes - ----------------------------- - Total: 22 bytes */ +static const char *debug_loc_contents; +static bfd_vma debug_loc_size; - debug_information [unit].pointer_size = byte_get (begin + 22, 1); - length = byte_get (begin + 4, 8); - begin += length + 12; - } - else - { - /* For 32-bit DWARF, the 1-byte address_size field is 10 bytes from - the start of the section: +static void +load_debug_loc (FILE *file) +{ + Elf_Internal_Shdr *sec; - unit_length: 4 bytes - version: 2 bytes - debug_abbrev_offset: 4 bytes - ----------------------------- - Total: 10 bytes */ + /* If it is already loaded, do nothing. */ + if (debug_loc_contents != NULL) + return; - debug_information [unit].pointer_size = byte_get (begin + 10, 1); - begin += length + 4; - } - } + /* Locate the .debug_loc section. */ + sec = find_section (".debug_loc"); + if (sec == NULL) + return; - free (start); + debug_loc_size = sec->sh_size; - return num_debug_info_entries = num_units; + debug_loc_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, + _("debug_loc section data")); } -static int -display_debug_lines (Elf_Internal_Shdr *section, - unsigned char *start, FILE *file) +static void +free_debug_loc (void) { - unsigned char *data = start; - unsigned char *end = start + section->sh_size; - unsigned int comp_unit = 0; - - printf (_("\nDump of debug contents of section %s:\n\n"), - SECTION_NAME (section)); - - get_debug_info (file); + if (debug_loc_contents == NULL) + return; - while (data < end) - { - DWARF2_Internal_LineInfo info; - unsigned char *standard_opcodes; - unsigned char *end_of_sequence; - unsigned char *hdrptr; - unsigned int pointer_size; - int initial_length_size; - int offset_size; - int i; + free ((char *) debug_loc_contents); + debug_loc_contents = NULL; + debug_loc_size = 0; +} - hdrptr = data; +static const char * debug_range_contents; +static unsigned long debug_range_size; - /* Check the length of the block. */ - info.li_length = byte_get (hdrptr, 4); - hdrptr += 4; +static void +load_debug_range (FILE *file) +{ + Elf_Internal_Shdr *sec; - if (info.li_length == 0xffffffff) - { - /* This section is 64-bit DWARF 3. */ - info.li_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; - } - else - { - offset_size = 4; - initial_length_size = 4; - } + /* If it is already loaded, do nothing. */ + if (debug_range_contents != NULL) + return; - if (info.li_length + initial_length_size > section->sh_size) - { - warn - (_("The line info appears to be corrupt - the section is too small\n")); - return 0; - } + /* Locate the .debug_str section. */ + sec = find_section (".debug_ranges"); + if (sec == NULL) + return; - /* Check its version number. */ - info.li_version = byte_get (hdrptr, 2); - hdrptr += 2; - if (info.li_version != 2 && info.li_version != 3) - { - warn (_("Only DWARF version 2 and 3 line info is currently supported.\n")); - return 0; - } + debug_range_size = sec->sh_size; - info.li_prologue_length = byte_get (hdrptr, offset_size); - hdrptr += offset_size; - info.li_min_insn_length = byte_get (hdrptr, 1); - hdrptr++; - info.li_default_is_stmt = byte_get (hdrptr, 1); - hdrptr++; - info.li_line_base = byte_get (hdrptr, 1); - hdrptr++; - info.li_line_range = byte_get (hdrptr, 1); - hdrptr++; - info.li_opcode_base = byte_get (hdrptr, 1); - hdrptr++; + debug_range_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, + _("debug_range section data")); +} - /* Sign extend the line base field. */ - info.li_line_base <<= 24; - info.li_line_base >>= 24; +static void +free_debug_range (void) +{ + if (debug_range_contents == NULL) + return; - /* Get the pointer size from the comp unit associated - with this block of line number information. */ - pointer_size = get_pointer_size_of_comp_unit (comp_unit, - ".debug_lines"); - comp_unit ++; + free ((char *) debug_range_contents); + debug_range_contents = NULL; + debug_range_size = 0; +} - printf (_(" Length: %ld\n"), info.li_length); - printf (_(" DWARF Version: %d\n"), info.li_version); - printf (_(" Prologue Length: %d\n"), info.li_prologue_length); - printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length); - printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt); - printf (_(" Line Base: %d\n"), info.li_line_base); - printf (_(" Line Range: %d\n"), info.li_line_range); - printf (_(" Opcode Base: %d\n"), info.li_opcode_base); - printf (_(" (Pointer size: %u)\n"), pointer_size); +/* Apply addends of RELA relocations. */ - end_of_sequence = data + info.li_length + initial_length_size; +static int +debug_apply_rela_addends (FILE *file, + Elf_Internal_Shdr *section, + int reloc_size, + unsigned char *sec_data, + unsigned char *start, + unsigned char *end) +{ + Elf_Internal_Shdr *relsec; - reset_state_machine (info.li_default_is_stmt); + if (end - start < reloc_size) + return 1; - /* Display the contents of the Opcodes table. */ - standard_opcodes = hdrptr; + for (relsec = section_headers; + relsec < section_headers + elf_header.e_shnum; + ++relsec) + { + unsigned long nrelas; + Elf_Internal_Rela *rela, *rp; + Elf_Internal_Shdr *symsec; + Elf_Internal_Sym *symtab; + Elf_Internal_Sym *sym; - printf (_("\n Opcodes:\n")); + if (relsec->sh_type != SHT_RELA + || SECTION_HEADER (relsec->sh_info) != section + || relsec->sh_size == 0) + continue; - for (i = 1; i < info.li_opcode_base; i++) - printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); + if (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size, + &rela, &nrelas)) + return 0; - /* Display the contents of the Directory table. */ - data = standard_opcodes + info.li_opcode_base - 1; + symsec = SECTION_HEADER (relsec->sh_link); + symtab = GET_ELF_SYMBOLS (file, symsec); - if (*data == 0) - printf (_("\n The Directory Table is empty.\n")); - else + for (rp = rela; rp < rela + nrelas; ++rp) { - printf (_("\n The Directory Table:\n")); - - while (*data != 0) - { - printf (_(" %s\n"), data); - - data += strlen ((char *) data) + 1; - } - } - - /* Skip the NUL at the end of the table. */ - data++; + unsigned char *loc; - /* Display the contents of the File Name table. */ - if (*data == 0) - printf (_("\n The File Name Table is empty.\n")); - else - { - printf (_("\n The File Name Table:\n")); - printf (_(" Entry\tDir\tTime\tSize\tName\n")); + if (rp->r_offset >= (bfd_vma) (start - sec_data) + && rp->r_offset < (bfd_vma) (end - sec_data) - reloc_size) + loc = sec_data + rp->r_offset; + else + continue; - while (*data != 0) + if (is_32bit_elf) { - unsigned char *name; - int bytes_read; - - printf (_(" %d\t"), ++state_machine_regs.last_file_entry); - name = data; - - data += strlen ((char *) data) + 1; - - printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); - data += bytes_read; - printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); - data += bytes_read; - printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); - data += bytes_read; - printf (_("%s\n"), name); - } - } - - /* Skip the NUL at the end of the table. */ - data++; - - /* Now display the statements. */ - printf (_("\n Line Number Statements:\n")); - - while (data < end_of_sequence) - { - unsigned char op_code; - int adv; - int bytes_read; - - op_code = *data++; + sym = symtab + ELF32_R_SYM (rp->r_info); - if (op_code >= info.li_opcode_base) - { - op_code -= info.li_opcode_base; - adv = (op_code / info.li_line_range) * info.li_min_insn_length; - state_machine_regs.address += adv; - printf (_(" Special opcode %d: advance Address by %d to 0x%lx"), - op_code, adv, state_machine_regs.address); - adv = (op_code % info.li_line_range) + info.li_line_base; - state_machine_regs.line += adv; - printf (_(" and Line by %d to %d\n"), - adv, state_machine_regs.line); + if (ELF32_R_SYM (rp->r_info) != 0 + && ELF32_ST_TYPE (sym->st_info) != STT_SECTION + /* Relocations against object symbols can happen, + eg when referencing a global array. For an + example of this see the _clz.o binary in libgcc.a. */ + && ELF32_ST_TYPE (sym->st_info) != STT_OBJECT) + { + warn (_("%s: skipping unexpected symbol type %s in relocation in section .rela%s\n"), + get_symbol_type (ELF32_ST_TYPE (sym->st_info)), + SECTION_NAME (section)); + continue; + } } - else switch (op_code) + else { - case DW_LNS_extended_op: - data += process_extended_line_op (data, info.li_default_is_stmt, - pointer_size); - break; - - case DW_LNS_copy: - printf (_(" Copy\n")); - break; - - case DW_LNS_advance_pc: - adv = info.li_min_insn_length * read_leb128 (data, & bytes_read, 0); - data += bytes_read; - state_machine_regs.address += adv; - printf (_(" Advance PC by %d to %lx\n"), adv, - state_machine_regs.address); - break; - - case DW_LNS_advance_line: - adv = read_leb128 (data, & bytes_read, 1); - data += bytes_read; - state_machine_regs.line += adv; - printf (_(" Advance Line by %d to %d\n"), adv, - state_machine_regs.line); - break; - - case DW_LNS_set_file: - adv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set File Name to entry %d in the File Name Table\n"), - adv); - state_machine_regs.file = adv; - break; - - case DW_LNS_set_column: - adv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set column to %d\n"), adv); - state_machine_regs.column = adv; - break; - - case DW_LNS_negate_stmt: - adv = state_machine_regs.is_stmt; - adv = ! adv; - printf (_(" Set is_stmt to %d\n"), adv); - state_machine_regs.is_stmt = adv; - break; - - case DW_LNS_set_basic_block: - printf (_(" Set basic block\n")); - state_machine_regs.basic_block = 1; - break; - - case DW_LNS_const_add_pc: - adv = (((255 - info.li_opcode_base) / info.li_line_range) - * info.li_min_insn_length); - state_machine_regs.address += adv; - printf (_(" Advance PC by constant %d to 0x%lx\n"), adv, - state_machine_regs.address); - break; - - case DW_LNS_fixed_advance_pc: - adv = byte_get (data, 2); - data += 2; - state_machine_regs.address += adv; - printf (_(" Advance PC by fixed size amount %d to 0x%lx\n"), - adv, state_machine_regs.address); - break; - - case DW_LNS_set_prologue_end: - printf (_(" Set prologue_end to true\n")); - break; - - case DW_LNS_set_epilogue_begin: - printf (_(" Set epilogue_begin to true\n")); - break; - - case DW_LNS_set_isa: - adv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set ISA to %d\n"), adv); - break; - - default: - printf (_(" Unknown opcode %d with operands: "), op_code); + sym = symtab + ELF64_R_SYM (rp->r_info); - for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + if (ELF64_R_SYM (rp->r_info) != 0 + && ELF64_ST_TYPE (sym->st_info) != STT_SECTION + && ELF64_ST_TYPE (sym->st_info) != STT_OBJECT) { - printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0), - i == 1 ? "" : ", "); - data += bytes_read; + warn (_("skipping unexpected symbol type %s in relocation in section .rela.%s\n"), + get_symbol_type (ELF64_ST_TYPE (sym->st_info)), + SECTION_NAME (section)); + continue; } - putchar ('\n'); - break; } - } - putchar ('\n'); - } - - return 1; -} -static int -display_debug_pubnames (Elf_Internal_Shdr *section, - unsigned char *start, - FILE *file ATTRIBUTE_UNUSED) -{ - DWARF2_Internal_PubNames pubnames; - unsigned char *end; - - end = start + section->sh_size; - - printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); - - while (start < end) - { - unsigned char *data; - unsigned long offset; - int offset_size, initial_length_size; - - data = start; - - pubnames.pn_length = byte_get (data, 4); - data += 4; - if (pubnames.pn_length == 0xffffffff) - { - pubnames.pn_length = byte_get (data, 8); - data += 8; - offset_size = 8; - initial_length_size = 12; - } - else - { - offset_size = 4; - initial_length_size = 4; - } - - pubnames.pn_version = byte_get (data, 2); - data += 2; - pubnames.pn_offset = byte_get (data, offset_size); - data += offset_size; - pubnames.pn_size = byte_get (data, offset_size); - data += offset_size; - - start += pubnames.pn_length + initial_length_size; - - if (pubnames.pn_version != 2 && pubnames.pn_version != 3) - { - static int warned = 0; - - if (! warned) - { - warn (_("Only DWARF 2 and 3 pubnames are currently supported\n")); - warned = 1; - } - - continue; + byte_put (loc, rp->r_addend, reloc_size); } - printf (_(" Length: %ld\n"), - pubnames.pn_length); - printf (_(" Version: %d\n"), - pubnames.pn_version); - printf (_(" Offset into .debug_info section: %ld\n"), - pubnames.pn_offset); - printf (_(" Size of area in .debug_info section: %ld\n"), - pubnames.pn_size); - - printf (_("\n Offset\tName\n")); - - do - { - offset = byte_get (data, offset_size); - - if (offset != 0) - { - data += offset_size; - printf (" %-6ld\t\t%s\n", offset, data); - data += strlen ((char *) data) + 1; - } - } - while (offset != 0); + free (symtab); + free (rela); + break; } - - printf ("\n"); return 1; } -static char * -get_TAG_name (unsigned long tag) -{ - switch (tag) - { - case DW_TAG_padding: return "DW_TAG_padding"; - case DW_TAG_array_type: return "DW_TAG_array_type"; - case DW_TAG_class_type: return "DW_TAG_class_type"; - case DW_TAG_entry_point: return "DW_TAG_entry_point"; - case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type"; - case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter"; - case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration"; - case DW_TAG_label: return "DW_TAG_label"; - case DW_TAG_lexical_block: return "DW_TAG_lexical_block"; - case DW_TAG_member: return "DW_TAG_member"; - case DW_TAG_pointer_type: return "DW_TAG_pointer_type"; - case DW_TAG_reference_type: return "DW_TAG_reference_type"; - case DW_TAG_compile_unit: return "DW_TAG_compile_unit"; - case DW_TAG_string_type: return "DW_TAG_string_type"; - case DW_TAG_structure_type: return "DW_TAG_structure_type"; - case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type"; - case DW_TAG_typedef: return "DW_TAG_typedef"; - case DW_TAG_union_type: return "DW_TAG_union_type"; - case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters"; - case DW_TAG_variant: return "DW_TAG_variant"; - case DW_TAG_common_block: return "DW_TAG_common_block"; - case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion"; - case DW_TAG_inheritance: return "DW_TAG_inheritance"; - case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine"; - case DW_TAG_module: return "DW_TAG_module"; - case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type"; - case DW_TAG_set_type: return "DW_TAG_set_type"; - case DW_TAG_subrange_type: return "DW_TAG_subrange_type"; - case DW_TAG_with_stmt: return "DW_TAG_with_stmt"; - case DW_TAG_access_declaration: return "DW_TAG_access_declaration"; - case DW_TAG_base_type: return "DW_TAG_base_type"; - case DW_TAG_catch_block: return "DW_TAG_catch_block"; - case DW_TAG_const_type: return "DW_TAG_const_type"; - case DW_TAG_constant: return "DW_TAG_constant"; - case DW_TAG_enumerator: return "DW_TAG_enumerator"; - case DW_TAG_file_type: return "DW_TAG_file_type"; - case DW_TAG_friend: return "DW_TAG_friend"; - case DW_TAG_namelist: return "DW_TAG_namelist"; - case DW_TAG_namelist_item: return "DW_TAG_namelist_item"; - case DW_TAG_packed_type: return "DW_TAG_packed_type"; - case DW_TAG_subprogram: return "DW_TAG_subprogram"; - case DW_TAG_template_type_param: return "DW_TAG_template_type_param"; - case DW_TAG_template_value_param: return "DW_TAG_template_value_param"; - case DW_TAG_thrown_type: return "DW_TAG_thrown_type"; - case DW_TAG_try_block: return "DW_TAG_try_block"; - case DW_TAG_variant_part: return "DW_TAG_variant_part"; - case DW_TAG_variable: return "DW_TAG_variable"; - case DW_TAG_volatile_type: return "DW_TAG_volatile_type"; - case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop"; - case DW_TAG_format_label: return "DW_TAG_format_label"; - case DW_TAG_function_template: return "DW_TAG_function_template"; - case DW_TAG_class_template: return "DW_TAG_class_template"; - /* DWARF 2.1 values. */ - case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure"; - case DW_TAG_restrict_type: return "DW_TAG_restrict_type"; - case DW_TAG_interface_type: return "DW_TAG_interface_type"; - case DW_TAG_namespace: return "DW_TAG_namespace"; - case DW_TAG_imported_module: return "DW_TAG_imported_module"; - case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type"; - case DW_TAG_partial_unit: return "DW_TAG_partial_unit"; - case DW_TAG_imported_unit: return "DW_TAG_imported_unit"; - /* UPC values. */ - case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type"; - case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type"; - case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type"; - default: - { - static char buffer[100]; - - sprintf (buffer, _("Unknown TAG value: %lx"), tag); - return buffer; - } - } -} - -static char * -get_AT_name (unsigned long attribute) -{ - switch (attribute) - { - case DW_AT_sibling: return "DW_AT_sibling"; - case DW_AT_location: return "DW_AT_location"; - case DW_AT_name: return "DW_AT_name"; - case DW_AT_ordering: return "DW_AT_ordering"; - case DW_AT_subscr_data: return "DW_AT_subscr_data"; - case DW_AT_byte_size: return "DW_AT_byte_size"; - case DW_AT_bit_offset: return "DW_AT_bit_offset"; - case DW_AT_bit_size: return "DW_AT_bit_size"; - case DW_AT_element_list: return "DW_AT_element_list"; - case DW_AT_stmt_list: return "DW_AT_stmt_list"; - case DW_AT_low_pc: return "DW_AT_low_pc"; - case DW_AT_high_pc: return "DW_AT_high_pc"; - case DW_AT_language: return "DW_AT_language"; - case DW_AT_member: return "DW_AT_member"; - case DW_AT_discr: return "DW_AT_discr"; - case DW_AT_discr_value: return "DW_AT_discr_value"; - case DW_AT_visibility: return "DW_AT_visibility"; - case DW_AT_import: return "DW_AT_import"; - case DW_AT_string_length: return "DW_AT_string_length"; - case DW_AT_common_reference: return "DW_AT_common_reference"; - case DW_AT_comp_dir: return "DW_AT_comp_dir"; - case DW_AT_const_value: return "DW_AT_const_value"; - case DW_AT_containing_type: return "DW_AT_containing_type"; - case DW_AT_default_value: return "DW_AT_default_value"; - case DW_AT_inline: return "DW_AT_inline"; - case DW_AT_is_optional: return "DW_AT_is_optional"; - case DW_AT_lower_bound: return "DW_AT_lower_bound"; - case DW_AT_producer: return "DW_AT_producer"; - case DW_AT_prototyped: return "DW_AT_prototyped"; - case DW_AT_return_addr: return "DW_AT_return_addr"; - case DW_AT_start_scope: return "DW_AT_start_scope"; - case DW_AT_stride_size: return "DW_AT_stride_size"; - case DW_AT_upper_bound: return "DW_AT_upper_bound"; - case DW_AT_abstract_origin: return "DW_AT_abstract_origin"; - case DW_AT_accessibility: return "DW_AT_accessibility"; - case DW_AT_address_class: return "DW_AT_address_class"; - case DW_AT_artificial: return "DW_AT_artificial"; - case DW_AT_base_types: return "DW_AT_base_types"; - case DW_AT_calling_convention: return "DW_AT_calling_convention"; - case DW_AT_count: return "DW_AT_count"; - case DW_AT_data_member_location: return "DW_AT_data_member_location"; - case DW_AT_decl_column: return "DW_AT_decl_column"; - case DW_AT_decl_file: return "DW_AT_decl_file"; - case DW_AT_decl_line: return "DW_AT_decl_line"; - case DW_AT_declaration: return "DW_AT_declaration"; - case DW_AT_discr_list: return "DW_AT_discr_list"; - case DW_AT_encoding: return "DW_AT_encoding"; - case DW_AT_external: return "DW_AT_external"; - case DW_AT_frame_base: return "DW_AT_frame_base"; - case DW_AT_friend: return "DW_AT_friend"; - case DW_AT_identifier_case: return "DW_AT_identifier_case"; - case DW_AT_macro_info: return "DW_AT_macro_info"; - case DW_AT_namelist_items: return "DW_AT_namelist_items"; - case DW_AT_priority: return "DW_AT_priority"; - case DW_AT_segment: return "DW_AT_segment"; - case DW_AT_specification: return "DW_AT_specification"; - case DW_AT_static_link: return "DW_AT_static_link"; - case DW_AT_type: return "DW_AT_type"; - case DW_AT_use_location: return "DW_AT_use_location"; - case DW_AT_variable_parameter: return "DW_AT_variable_parameter"; - case DW_AT_virtuality: return "DW_AT_virtuality"; - case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location"; - /* DWARF 2.1 values. */ - case DW_AT_allocated: return "DW_AT_allocated"; - case DW_AT_associated: return "DW_AT_associated"; - case DW_AT_data_location: return "DW_AT_data_location"; - case DW_AT_stride: return "DW_AT_stride"; - case DW_AT_entry_pc: return "DW_AT_entry_pc"; - case DW_AT_use_UTF8: return "DW_AT_use_UTF8"; - case DW_AT_extension: return "DW_AT_extension"; - case DW_AT_ranges: return "DW_AT_ranges"; - case DW_AT_trampoline: return "DW_AT_trampoline"; - case DW_AT_call_column: return "DW_AT_call_column"; - case DW_AT_call_file: return "DW_AT_call_file"; - case DW_AT_call_line: return "DW_AT_call_line"; - /* SGI/MIPS extensions. */ - case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde"; - case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin"; - case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin"; - case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin"; - case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor"; - case DW_AT_MIPS_software_pipeline_depth: - return "DW_AT_MIPS_software_pipeline_depth"; - case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name"; - case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride"; - case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name"; - case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin"; - case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines"; - /* GNU extensions. */ - case DW_AT_sf_names: return "DW_AT_sf_names"; - case DW_AT_src_info: return "DW_AT_src_info"; - case DW_AT_mac_info: return "DW_AT_mac_info"; - case DW_AT_src_coords: return "DW_AT_src_coords"; - case DW_AT_body_begin: return "DW_AT_body_begin"; - case DW_AT_body_end: return "DW_AT_body_end"; - case DW_AT_GNU_vector: return "DW_AT_GNU_vector"; - /* UPC extension. */ - case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled"; - default: - { - static char buffer[100]; - - sprintf (buffer, _("Unknown AT value: %lx"), attribute); - return buffer; - } - } -} - -static char * -get_FORM_name (unsigned long form) -{ - switch (form) - { - case DW_FORM_addr: return "DW_FORM_addr"; - case DW_FORM_block2: return "DW_FORM_block2"; - case DW_FORM_block4: return "DW_FORM_block4"; - case DW_FORM_data2: return "DW_FORM_data2"; - case DW_FORM_data4: return "DW_FORM_data4"; - case DW_FORM_data8: return "DW_FORM_data8"; - case DW_FORM_string: return "DW_FORM_string"; - case DW_FORM_block: return "DW_FORM_block"; - case DW_FORM_block1: return "DW_FORM_block1"; - case DW_FORM_data1: return "DW_FORM_data1"; - case DW_FORM_flag: return "DW_FORM_flag"; - case DW_FORM_sdata: return "DW_FORM_sdata"; - case DW_FORM_strp: return "DW_FORM_strp"; - case DW_FORM_udata: return "DW_FORM_udata"; - case DW_FORM_ref_addr: return "DW_FORM_ref_addr"; - case DW_FORM_ref1: return "DW_FORM_ref1"; - case DW_FORM_ref2: return "DW_FORM_ref2"; - case DW_FORM_ref4: return "DW_FORM_ref4"; - case DW_FORM_ref8: return "DW_FORM_ref8"; - case DW_FORM_ref_udata: return "DW_FORM_ref_udata"; - case DW_FORM_indirect: return "DW_FORM_indirect"; - default: - { - static char buffer[100]; - - sprintf (buffer, _("Unknown FORM value: %lx"), form); - return buffer; - } - } -} - /* FIXME: There are better and more efficient ways to handle these structures. For now though, I just want something that is simple to implement. */ @@ -7973,128 +7424,122 @@ process_abbrev_section (unsigned char *start, unsigned char *end) return NULL; } - -static int -display_debug_macinfo (Elf_Internal_Shdr *section, - unsigned char *start, - FILE *file ATTRIBUTE_UNUSED) +static char * +get_TAG_name (unsigned long tag) { - unsigned char *end = start + section->sh_size; - unsigned char *curr = start; - unsigned int bytes_read; - enum dwarf_macinfo_record_type op; - - printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); - - while (curr < end) + switch (tag) { - unsigned int lineno; - const char *string; - - op = *curr; - curr++; - - switch (op) - { - case DW_MACINFO_start_file: - { - unsigned int filenum; - - lineno = read_leb128 (curr, & bytes_read, 0); - curr += bytes_read; - filenum = read_leb128 (curr, & bytes_read, 0); - curr += bytes_read; - - printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), - lineno, filenum); - } - break; - - case DW_MACINFO_end_file: - printf (_(" DW_MACINFO_end_file\n")); - break; - - case DW_MACINFO_define: - lineno = read_leb128 (curr, & bytes_read, 0); - curr += bytes_read; - string = curr; - curr += strlen (string) + 1; - printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"), - lineno, string); - break; - - case DW_MACINFO_undef: - lineno = read_leb128 (curr, & bytes_read, 0); - curr += bytes_read; - string = curr; - curr += strlen (string) + 1; - printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), - lineno, string); - break; - - case DW_MACINFO_vendor_ext: - { - unsigned int constant; + case DW_TAG_padding: return "DW_TAG_padding"; + case DW_TAG_array_type: return "DW_TAG_array_type"; + case DW_TAG_class_type: return "DW_TAG_class_type"; + case DW_TAG_entry_point: return "DW_TAG_entry_point"; + case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type"; + case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter"; + case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration"; + case DW_TAG_label: return "DW_TAG_label"; + case DW_TAG_lexical_block: return "DW_TAG_lexical_block"; + case DW_TAG_member: return "DW_TAG_member"; + case DW_TAG_pointer_type: return "DW_TAG_pointer_type"; + case DW_TAG_reference_type: return "DW_TAG_reference_type"; + case DW_TAG_compile_unit: return "DW_TAG_compile_unit"; + case DW_TAG_string_type: return "DW_TAG_string_type"; + case DW_TAG_structure_type: return "DW_TAG_structure_type"; + case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type"; + case DW_TAG_typedef: return "DW_TAG_typedef"; + case DW_TAG_union_type: return "DW_TAG_union_type"; + case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters"; + case DW_TAG_variant: return "DW_TAG_variant"; + case DW_TAG_common_block: return "DW_TAG_common_block"; + case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion"; + case DW_TAG_inheritance: return "DW_TAG_inheritance"; + case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine"; + case DW_TAG_module: return "DW_TAG_module"; + case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type"; + case DW_TAG_set_type: return "DW_TAG_set_type"; + case DW_TAG_subrange_type: return "DW_TAG_subrange_type"; + case DW_TAG_with_stmt: return "DW_TAG_with_stmt"; + case DW_TAG_access_declaration: return "DW_TAG_access_declaration"; + case DW_TAG_base_type: return "DW_TAG_base_type"; + case DW_TAG_catch_block: return "DW_TAG_catch_block"; + case DW_TAG_const_type: return "DW_TAG_const_type"; + case DW_TAG_constant: return "DW_TAG_constant"; + case DW_TAG_enumerator: return "DW_TAG_enumerator"; + case DW_TAG_file_type: return "DW_TAG_file_type"; + case DW_TAG_friend: return "DW_TAG_friend"; + case DW_TAG_namelist: return "DW_TAG_namelist"; + case DW_TAG_namelist_item: return "DW_TAG_namelist_item"; + case DW_TAG_packed_type: return "DW_TAG_packed_type"; + case DW_TAG_subprogram: return "DW_TAG_subprogram"; + case DW_TAG_template_type_param: return "DW_TAG_template_type_param"; + case DW_TAG_template_value_param: return "DW_TAG_template_value_param"; + case DW_TAG_thrown_type: return "DW_TAG_thrown_type"; + case DW_TAG_try_block: return "DW_TAG_try_block"; + case DW_TAG_variant_part: return "DW_TAG_variant_part"; + case DW_TAG_variable: return "DW_TAG_variable"; + case DW_TAG_volatile_type: return "DW_TAG_volatile_type"; + case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop"; + case DW_TAG_format_label: return "DW_TAG_format_label"; + case DW_TAG_function_template: return "DW_TAG_function_template"; + case DW_TAG_class_template: return "DW_TAG_class_template"; + /* DWARF 2.1 values. */ + case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure"; + case DW_TAG_restrict_type: return "DW_TAG_restrict_type"; + case DW_TAG_interface_type: return "DW_TAG_interface_type"; + case DW_TAG_namespace: return "DW_TAG_namespace"; + case DW_TAG_imported_module: return "DW_TAG_imported_module"; + case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type"; + case DW_TAG_partial_unit: return "DW_TAG_partial_unit"; + case DW_TAG_imported_unit: return "DW_TAG_imported_unit"; + /* UPC values. */ + case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type"; + case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type"; + case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type"; + default: + { + static char buffer[100]; - constant = read_leb128 (curr, & bytes_read, 0); - curr += bytes_read; - string = curr; - curr += strlen (string) + 1; - printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"), - constant, string); - } - break; - } + sprintf (buffer, _("Unknown TAG value: %lx"), tag); + return buffer; + } } - - return 1; } - -static int -display_debug_abbrev (Elf_Internal_Shdr *section, - unsigned char *start, - FILE *file ATTRIBUTE_UNUSED) +static char * +get_FORM_name (unsigned long form) { - abbrev_entry *entry; - unsigned char *end = start + section->sh_size; - - printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); - - do + switch (form) { - start = process_abbrev_section (start, end); - - if (first_abbrev == NULL) - continue; - - printf (_(" Number TAG\n")); - - for (entry = first_abbrev; entry; entry = entry->next) - { - abbrev_attr *attr; - - printf (_(" %ld %s [%s]\n"), - entry->entry, - get_TAG_name (entry->tag), - entry->children ? _("has children") : _("no children")); - - for (attr = entry->first_attr; attr; attr = attr->next) - printf (_(" %-18s %s\n"), - get_AT_name (attr->attribute), - get_FORM_name (attr->form)); - } + case DW_FORM_addr: return "DW_FORM_addr"; + case DW_FORM_block2: return "DW_FORM_block2"; + case DW_FORM_block4: return "DW_FORM_block4"; + case DW_FORM_data2: return "DW_FORM_data2"; + case DW_FORM_data4: return "DW_FORM_data4"; + case DW_FORM_data8: return "DW_FORM_data8"; + case DW_FORM_string: return "DW_FORM_string"; + case DW_FORM_block: return "DW_FORM_block"; + case DW_FORM_block1: return "DW_FORM_block1"; + case DW_FORM_data1: return "DW_FORM_data1"; + case DW_FORM_flag: return "DW_FORM_flag"; + case DW_FORM_sdata: return "DW_FORM_sdata"; + case DW_FORM_strp: return "DW_FORM_strp"; + case DW_FORM_udata: return "DW_FORM_udata"; + case DW_FORM_ref_addr: return "DW_FORM_ref_addr"; + case DW_FORM_ref1: return "DW_FORM_ref1"; + case DW_FORM_ref2: return "DW_FORM_ref2"; + case DW_FORM_ref4: return "DW_FORM_ref4"; + case DW_FORM_ref8: return "DW_FORM_ref8"; + case DW_FORM_ref_udata: return "DW_FORM_ref_udata"; + case DW_FORM_indirect: return "DW_FORM_indirect"; + default: + { + static char buffer[100]; - free_abbrevs (); + sprintf (buffer, _("Unknown FORM value: %lx"), form); + return buffer; + } } - while (start); - - printf ("\n"); - - return 1; } - static unsigned char * display_block (unsigned char *data, unsigned long length) { @@ -8109,7 +7554,8 @@ display_block (unsigned char *data, unsigned long length) static void decode_location_expression (unsigned char * data, unsigned int pointer_size, - unsigned long length) + unsigned long length, + unsigned long cu_offset) { unsigned op; int bytes_read; @@ -8406,11 +7852,15 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_push_object_address"); break; case DW_OP_call2: - printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2)); + /* XXX: Strictly speaking for 64-bit DWARF3 files + this ought to be an 8-byte wide computation. */ + printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2) + cu_offset); data += 2; break; case DW_OP_call4: - printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4)); + /* XXX: Strictly speaking for 64-bit DWARF3 files + this ought to be an 8-byte wide computation. */ + printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4) + cu_offset); data += 4; break; case DW_OP_call_ref: @@ -8438,253 +7888,6 @@ decode_location_expression (unsigned char * data, } } -static const char *debug_loc_contents; -static bfd_vma debug_loc_size; - -static void -load_debug_loc (FILE *file) -{ - Elf_Internal_Shdr *sec; - - /* If it is already loaded, do nothing. */ - if (debug_loc_contents != NULL) - return; - - /* Locate the .debug_loc section. */ - sec = find_section (".debug_loc"); - if (sec == NULL) - return; - - debug_loc_size = sec->sh_size; - - debug_loc_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, - _("debug_loc section data")); -} - -static void -free_debug_loc (void) -{ - if (debug_loc_contents == NULL) - return; - - free ((char *) debug_loc_contents); - debug_loc_contents = NULL; - debug_loc_size = 0; -} - - -static int -display_debug_loc (Elf_Internal_Shdr *section, - unsigned char *start, FILE *file) -{ - unsigned char *section_end; - unsigned long bytes; - unsigned char *section_begin = start; - bfd_vma addr; - unsigned int comp_unit = 0; - - addr = section->sh_addr; - bytes = section->sh_size; - section_end = start + bytes; - - if (bytes == 0) - { - printf (_("\nThe .debug_loc section is empty.\n")); - return 0; - } - - get_debug_info (file); - - printf (_("Contents of the .debug_loc section:\n\n")); - printf (_("\n Offset Begin End Expression\n")); - - while (start < section_end) - { - unsigned long begin; - unsigned long end; - unsigned short length; - unsigned long offset; - unsigned int pointer_size; - - offset = start - section_begin; - - /* Get the pointer size from the comp unit associated - with this block of location information. */ - pointer_size = get_pointer_size_of_comp_unit (comp_unit, ".debug_loc"); - - comp_unit ++; - - while (1) - { - begin = byte_get (start, pointer_size); - start += pointer_size; - end = byte_get (start, pointer_size); - start += pointer_size; - - if (begin == 0 && end == 0) - break; - - /* For now, skip any base address specifiers. */ - if (begin == 0xffffffff) - continue; - - begin += addr; - end += addr; - - length = byte_get (start, 2); - start += 2; - - printf (" %8.8lx %8.8lx %8.8lx (", offset, begin, end); - decode_location_expression (start, pointer_size, length); - printf (")\n"); - - start += length; - } - printf ("\n"); - } - return 1; -} - -static const char *debug_str_contents; -static bfd_vma debug_str_size; - -static void -load_debug_str (FILE *file) -{ - Elf_Internal_Shdr *sec; - - /* If it is already loaded, do nothing. */ - if (debug_str_contents != NULL) - return; - - /* Locate the .debug_str section. */ - sec = find_section (".debug_str"); - if (sec == NULL) - return; - - debug_str_size = sec->sh_size; - - debug_str_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, - _("debug_str section data")); -} - -static void -free_debug_str (void) -{ - if (debug_str_contents == NULL) - return; - - free ((char *) debug_str_contents); - debug_str_contents = NULL; - debug_str_size = 0; -} - -static const char * -fetch_indirect_string (unsigned long offset) -{ - if (debug_str_contents == NULL) - return _("<no .debug_str section>"); - - if (offset > debug_str_size) - return _("<offset is too big>"); - - return debug_str_contents + offset; -} - -static int -display_debug_str (Elf_Internal_Shdr *section, - unsigned char *start, - FILE *file ATTRIBUTE_UNUSED) -{ - unsigned long bytes; - bfd_vma addr; - - addr = section->sh_addr; - bytes = section->sh_size; - - if (bytes == 0) - { - printf (_("\nThe .debug_str section is empty.\n")); - return 0; - } - - printf (_("Contents of the .debug_str section:\n\n")); - - while (bytes) - { - int j; - int k; - int lbytes; - - lbytes = (bytes > 16 ? 16 : bytes); - - printf (" 0x%8.8lx ", (unsigned long) addr); - - for (j = 0; j < 16; j++) - { - if (j < lbytes) - printf ("%2.2x", start[j]); - else - printf (" "); - - if ((j & 3) == 3) - printf (" "); - } - - for (j = 0; j < lbytes; j++) - { - k = start[j]; - if (k >= ' ' && k < 0x80) - printf ("%c", k); - else - printf ("."); - } - - putchar ('\n'); - - start += lbytes; - addr += lbytes; - bytes -= lbytes; - } - - return 1; -} - -static const char * debug_range_contents; -static unsigned long debug_range_size; - -static void -load_debug_range (FILE *file) -{ - Elf_Internal_Shdr *sec; - - /* If it is already loaded, do nothing. */ - if (debug_range_contents != NULL) - return; - - /* Locate the .debug_str section. */ - sec = find_section (".debug_ranges"); - if (sec == NULL) - return; - - debug_range_size = sec->sh_size; - - debug_range_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size, - _("debug_range section data")); -} - -static void -free_debug_range (void) -{ - if (debug_range_contents == NULL) - return; - - free ((char *) debug_range_contents); - debug_range_contents = NULL; - debug_range_size = 0; -} - - /* Decode a DW_AT_ranges attribute for 64bit DWARF3 . */ static void @@ -8799,6 +8002,23 @@ decode_range (unsigned long offset, bfd_vma base_address) printf (")"); } +/* This structure records the information that + we extract from the.debug_info section. */ +typedef struct +{ + unsigned int pointer_size; + unsigned long cu_offset; + /* This is an array of offsets to the location list table. */ + unsigned long *loc_offsets; + unsigned int num_loc_offsets; + unsigned int max_loc_offsets; +} +debug_info; + +static debug_info * debug_information = NULL; +static unsigned int num_debug_info_entries = 0; +static unsigned int last_pointer_size = 0; +static int warned_about_missing_comp_units = FALSE; static unsigned char * read_and_display_attr_value (unsigned long attribute, @@ -8807,7 +8027,9 @@ read_and_display_attr_value (unsigned long attribute, unsigned long cu_offset, unsigned long pointer_size, unsigned long offset_size, - int dwarf_version) + int dwarf_version, + debug_info *debug_info_p, + int do_loc) { static unsigned long saved_DW_AT_low_pc = 0; unsigned long uvalue = 0; @@ -8878,78 +8100,109 @@ read_and_display_attr_value (unsigned long attribute, case DW_FORM_indirect: form = read_leb128 (data, & bytes_read, 0); data += bytes_read; - printf (" %s", get_FORM_name (form)); - return read_and_display_attr_value (attribute, form, data, cu_offset, - pointer_size, offset_size, - dwarf_version); + if (!do_loc) + printf (" %s", get_FORM_name (form)); + return read_and_display_attr_value (attribute, form, data, + cu_offset, pointer_size, + offset_size, dwarf_version, + debug_info_p, do_loc); } switch (form) { case DW_FORM_ref_addr: - printf (" <#%lx>", uvalue); + if (!do_loc) + printf (" <#%lx>", uvalue); break; case DW_FORM_ref1: case DW_FORM_ref2: case DW_FORM_ref4: case DW_FORM_ref_udata: - printf (" <%lx>", uvalue + cu_offset); + if (!do_loc) + printf (" <%lx>", uvalue + cu_offset); break; + case DW_FORM_data4: case DW_FORM_addr: - printf (" %#lx", uvalue); + if (!do_loc) + printf (" %#lx", uvalue); break; case DW_FORM_flag: case DW_FORM_data1: case DW_FORM_data2: - case DW_FORM_data4: case DW_FORM_sdata: case DW_FORM_udata: - printf (" %ld", uvalue); + if (!do_loc) + printf (" %ld", uvalue); break; case DW_FORM_ref8: case DW_FORM_data8: - uvalue = byte_get (data, 4); - printf (" %lx", uvalue); - printf (" %lx", (unsigned long) byte_get (data + 4, 4)); + if (!do_loc) + { + uvalue = byte_get (data, 4); + printf (" %lx", uvalue); + printf (" %lx", (unsigned long) byte_get (data + 4, 4)); + } + if ((do_loc || do_debug_loc) + && num_debug_info_entries == 0) + { + if (sizeof (uvalue) == 8) + uvalue = byte_get (data, 8); + else + error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n")); + } data += 8; break; case DW_FORM_string: - printf (" %s", data); + if (!do_loc) + printf (" %s", data); data += strlen ((char *) data) + 1; break; case DW_FORM_block: uvalue = read_leb128 (data, & bytes_read, 0); block_start = data + bytes_read; - data = display_block (block_start, uvalue); + if (do_loc) + data = block_start + uvalue; + else + data = display_block (block_start, uvalue); break; case DW_FORM_block1: uvalue = byte_get (data, 1); block_start = data + 1; - data = display_block (block_start, uvalue); + if (do_loc) + data = block_start + uvalue; + else + data = display_block (block_start, uvalue); break; case DW_FORM_block2: uvalue = byte_get (data, 2); block_start = data + 2; - data = display_block (block_start, uvalue); + if (do_loc) + data = block_start + uvalue; + else + data = display_block (block_start, uvalue); break; case DW_FORM_block4: uvalue = byte_get (data, 4); block_start = data + 4; - data = display_block (block_start, uvalue); + if (do_loc) + data = block_start + uvalue; + else + data = display_block (block_start, uvalue); break; case DW_FORM_strp: - printf (_(" (indirect string, offset: 0x%lx): %s"), - uvalue, fetch_indirect_string (uvalue)); + if (!do_loc) + printf (_(" (indirect string, offset: 0x%lx): %s"), + uvalue, fetch_indirect_string (uvalue)); break; case DW_FORM_indirect: @@ -8962,6 +8215,47 @@ read_and_display_attr_value (unsigned long attribute, } /* For some attributes we can display further information. */ + if ((do_loc || do_debug_loc) + && num_debug_info_entries == 0) + { + switch (attribute) + { + case DW_AT_frame_base: + case DW_AT_location: + case DW_AT_data_member_location: + case DW_AT_vtable_elem_location: + case DW_AT_allocated: + case DW_AT_associated: + case DW_AT_data_location: + case DW_AT_stride: + case DW_AT_upper_bound: + case DW_AT_lower_bound: + if (form == DW_FORM_data4 || form == DW_FORM_data8) + { + /* Process location list. */ + unsigned int max = debug_info_p->max_loc_offsets; + unsigned int num = debug_info_p->num_loc_offsets; + + if (max == 0 || num >= max) + { + max += 1024; + debug_info_p->loc_offsets + = xrealloc (debug_info_p->loc_offsets, + max * sizeof (*debug_info_p->loc_offsets)); + debug_info_p->max_loc_offsets = max; + } + debug_info_p->loc_offsets [num] = uvalue; + debug_info_p->num_loc_offsets++; + } + break; + + default: + break; + } + } + + if (do_loc) + return data; printf ("\t"); @@ -9119,7 +8413,7 @@ read_and_display_attr_value (unsigned long attribute, if (block_start) { printf ("("); - decode_location_expression (block_start, pointer_size, uvalue); + decode_location_expression (block_start, pointer_size, uvalue, cu_offset); printf (")"); } else if (form == DW_FORM_data4 || form == DW_FORM_data8) @@ -9146,6 +8440,119 @@ read_and_display_attr_value (unsigned long attribute, return data; } +static char * +get_AT_name (unsigned long attribute) +{ + switch (attribute) + { + case DW_AT_sibling: return "DW_AT_sibling"; + case DW_AT_location: return "DW_AT_location"; + case DW_AT_name: return "DW_AT_name"; + case DW_AT_ordering: return "DW_AT_ordering"; + case DW_AT_subscr_data: return "DW_AT_subscr_data"; + case DW_AT_byte_size: return "DW_AT_byte_size"; + case DW_AT_bit_offset: return "DW_AT_bit_offset"; + case DW_AT_bit_size: return "DW_AT_bit_size"; + case DW_AT_element_list: return "DW_AT_element_list"; + case DW_AT_stmt_list: return "DW_AT_stmt_list"; + case DW_AT_low_pc: return "DW_AT_low_pc"; + case DW_AT_high_pc: return "DW_AT_high_pc"; + case DW_AT_language: return "DW_AT_language"; + case DW_AT_member: return "DW_AT_member"; + case DW_AT_discr: return "DW_AT_discr"; + case DW_AT_discr_value: return "DW_AT_discr_value"; + case DW_AT_visibility: return "DW_AT_visibility"; + case DW_AT_import: return "DW_AT_import"; + case DW_AT_string_length: return "DW_AT_string_length"; + case DW_AT_common_reference: return "DW_AT_common_reference"; + case DW_AT_comp_dir: return "DW_AT_comp_dir"; + case DW_AT_const_value: return "DW_AT_const_value"; + case DW_AT_containing_type: return "DW_AT_containing_type"; + case DW_AT_default_value: return "DW_AT_default_value"; + case DW_AT_inline: return "DW_AT_inline"; + case DW_AT_is_optional: return "DW_AT_is_optional"; + case DW_AT_lower_bound: return "DW_AT_lower_bound"; + case DW_AT_producer: return "DW_AT_producer"; + case DW_AT_prototyped: return "DW_AT_prototyped"; + case DW_AT_return_addr: return "DW_AT_return_addr"; + case DW_AT_start_scope: return "DW_AT_start_scope"; + case DW_AT_stride_size: return "DW_AT_stride_size"; + case DW_AT_upper_bound: return "DW_AT_upper_bound"; + case DW_AT_abstract_origin: return "DW_AT_abstract_origin"; + case DW_AT_accessibility: return "DW_AT_accessibility"; + case DW_AT_address_class: return "DW_AT_address_class"; + case DW_AT_artificial: return "DW_AT_artificial"; + case DW_AT_base_types: return "DW_AT_base_types"; + case DW_AT_calling_convention: return "DW_AT_calling_convention"; + case DW_AT_count: return "DW_AT_count"; + case DW_AT_data_member_location: return "DW_AT_data_member_location"; + case DW_AT_decl_column: return "DW_AT_decl_column"; + case DW_AT_decl_file: return "DW_AT_decl_file"; + case DW_AT_decl_line: return "DW_AT_decl_line"; + case DW_AT_declaration: return "DW_AT_declaration"; + case DW_AT_discr_list: return "DW_AT_discr_list"; + case DW_AT_encoding: return "DW_AT_encoding"; + case DW_AT_external: return "DW_AT_external"; + case DW_AT_frame_base: return "DW_AT_frame_base"; + case DW_AT_friend: return "DW_AT_friend"; + case DW_AT_identifier_case: return "DW_AT_identifier_case"; + case DW_AT_macro_info: return "DW_AT_macro_info"; + case DW_AT_namelist_items: return "DW_AT_namelist_items"; + case DW_AT_priority: return "DW_AT_priority"; + case DW_AT_segment: return "DW_AT_segment"; + case DW_AT_specification: return "DW_AT_specification"; + case DW_AT_static_link: return "DW_AT_static_link"; + case DW_AT_type: return "DW_AT_type"; + case DW_AT_use_location: return "DW_AT_use_location"; + case DW_AT_variable_parameter: return "DW_AT_variable_parameter"; + case DW_AT_virtuality: return "DW_AT_virtuality"; + case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location"; + /* DWARF 2.1 values. */ + case DW_AT_allocated: return "DW_AT_allocated"; + case DW_AT_associated: return "DW_AT_associated"; + case DW_AT_data_location: return "DW_AT_data_location"; + case DW_AT_stride: return "DW_AT_stride"; + case DW_AT_entry_pc: return "DW_AT_entry_pc"; + case DW_AT_use_UTF8: return "DW_AT_use_UTF8"; + case DW_AT_extension: return "DW_AT_extension"; + case DW_AT_ranges: return "DW_AT_ranges"; + case DW_AT_trampoline: return "DW_AT_trampoline"; + case DW_AT_call_column: return "DW_AT_call_column"; + case DW_AT_call_file: return "DW_AT_call_file"; + case DW_AT_call_line: return "DW_AT_call_line"; + /* SGI/MIPS extensions. */ + case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde"; + case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin"; + case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin"; + case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin"; + case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor"; + case DW_AT_MIPS_software_pipeline_depth: + return "DW_AT_MIPS_software_pipeline_depth"; + case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name"; + case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride"; + case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name"; + case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin"; + case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines"; + /* GNU extensions. */ + case DW_AT_sf_names: return "DW_AT_sf_names"; + case DW_AT_src_info: return "DW_AT_src_info"; + case DW_AT_mac_info: return "DW_AT_mac_info"; + case DW_AT_src_coords: return "DW_AT_src_coords"; + case DW_AT_body_begin: return "DW_AT_body_begin"; + case DW_AT_body_end: return "DW_AT_body_end"; + case DW_AT_GNU_vector: return "DW_AT_GNU_vector"; + /* UPC extension. */ + case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled"; + default: + { + static char buffer[100]; + + sprintf (buffer, _("Unknown AT value: %lx"), attribute); + return buffer; + } + } +} + static unsigned char * read_and_display_attr (unsigned long attribute, unsigned long form, @@ -9153,119 +8560,86 @@ read_and_display_attr (unsigned long attribute, unsigned long cu_offset, unsigned long pointer_size, unsigned long offset_size, - int dwarf_version) + int dwarf_version, + debug_info *debug_info_p, + int do_loc) { - printf (" %-18s:", get_AT_name (attribute)); + if (!do_loc) + printf (" %-18s:", get_AT_name (attribute)); data = read_and_display_attr_value (attribute, form, data, cu_offset, - pointer_size, offset_size, dwarf_version); - printf ("\n"); + pointer_size, offset_size, + dwarf_version, debug_info_p, + do_loc); + if (!do_loc) + printf ("\n"); return data; } -/* Apply addends of RELA relocations. */ + +/* Process the contents of a .debug_info section. If do_loc is non-zero + then we are scanning for location lists and we do not want to display + anything to the user. */ static int -debug_apply_rela_addends (FILE *file, - Elf_Internal_Shdr *section, - int reloc_size, - unsigned char *sec_data, - unsigned char *start, - unsigned char *end) +process_debug_info (Elf_Internal_Shdr *section, unsigned char *start, + FILE *file, int do_loc) { - Elf_Internal_Shdr *relsec; - - if (end - start < reloc_size) - return 1; + unsigned char *end = start + section->sh_size; + unsigned char *section_begin; + unsigned int unit; + unsigned int num_units = 0; - for (relsec = section_headers; - relsec < section_headers + elf_header.e_shnum; - ++relsec) + if ((do_loc || do_debug_loc) + && num_debug_info_entries == 0) { - unsigned long nrelas; - Elf_Internal_Rela *rela, *rp; - Elf_Internal_Shdr *symsec; - Elf_Internal_Sym *symtab; - Elf_Internal_Sym *sym; - - if (relsec->sh_type != SHT_RELA - || SECTION_HEADER (relsec->sh_info) != section - || relsec->sh_size == 0) - continue; - - if (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size, - &rela, &nrelas)) - return 0; - - symsec = SECTION_HEADER (relsec->sh_link); - symtab = GET_ELF_SYMBOLS (file, symsec); + unsigned long length; - for (rp = rela; rp < rela + nrelas; ++rp) + /* First scan the section to get the number of comp units. */ + for (section_begin = start, num_units = 0; section_begin < end; + num_units ++) { - unsigned char *loc; - - if (rp->r_offset >= (bfd_vma) (start - sec_data) - && rp->r_offset < (bfd_vma) (end - sec_data) - reloc_size) - loc = sec_data + rp->r_offset; - else - continue; + /* Read the first 4 bytes. For a 32-bit DWARF section, this + will be the length. For a 64-bit DWARF section, it'll be + the escape code 0xffffffff followed by an 8 byte length. */ + length = byte_get (section_begin, 4); - if (is_32bit_elf) + if (length == 0xffffffff) { - sym = symtab + ELF32_R_SYM (rp->r_info); - - if (ELF32_R_SYM (rp->r_info) != 0 - && ELF32_ST_TYPE (sym->st_info) != STT_SECTION - /* Relocations against object symbols can happen, - eg when referencing a global array. For an - example of this see the _clz.o binary in libgcc.a. */ - && ELF32_ST_TYPE (sym->st_info) != STT_OBJECT) - { - warn (_("%s: skipping unexpected symbol type %s in relocation in section .rela%s\n"), - get_symbol_type (ELF32_ST_TYPE (sym->st_info)), - SECTION_NAME (section)); - continue; - } + length = byte_get (section_begin + 4, 8); + section_begin += length + 12; } else - { - sym = symtab + ELF64_R_SYM (rp->r_info); - - if (ELF64_R_SYM (rp->r_info) != 0 - && ELF64_ST_TYPE (sym->st_info) != STT_SECTION - && ELF64_ST_TYPE (sym->st_info) != STT_OBJECT) - { - warn (_("skipping unexpected symbol type %s in relocation in section .rela.%s\n"), - get_symbol_type (ELF64_ST_TYPE (sym->st_info)), - SECTION_NAME (section)); - continue; - } - } + section_begin += length + 4; + } - byte_put (loc, rp->r_addend, reloc_size); + if (num_units == 0) + { + error (_("No comp units in .debug_info section ?")); + return 0; } - free (symtab); - free (rela); - break; + /* Then allocate an array to hold the information. */ + debug_information = malloc (num_units * + sizeof (* debug_information)); + if (debug_information == NULL) + { + error (_("Not enough memory for a debug info array of %u entries"), + num_units); + return 0; + } } - return 1; -} -static int -display_debug_info (Elf_Internal_Shdr *section, - unsigned char *start, - FILE *file) -{ - unsigned char *end = start + section->sh_size; - unsigned char *section_begin = start; - - printf (_("The section %s contains:\n\n"), SECTION_NAME (section)); + if (!do_loc) + { + printf (_("The section %s contains:\n\n"), + SECTION_NAME (section)); - load_debug_str (file); - load_debug_loc (file); - load_debug_range (file); + load_debug_str (file); + load_debug_loc (file); + load_debug_range (file); + } - while (start < end) + for (section_begin = start, unit = 0; start < end; unit++) { DWARF2_Internal_CompUnit compunit; unsigned char *hdrptr; @@ -9311,14 +8685,27 @@ display_debug_info (Elf_Internal_Shdr *section, compunit.cu_pointer_size = byte_get (hdrptr, 1); hdrptr += 1; + if ((do_loc || do_debug_loc) + && num_debug_info_entries == 0) + { + debug_information [unit].cu_offset = cu_offset; + debug_information [unit].pointer_size + = compunit.cu_pointer_size; + debug_information [unit].loc_offsets = NULL; + debug_information [unit].max_loc_offsets = 0; + debug_information [unit].num_loc_offsets = 0; + } tags = hdrptr; - printf (_(" Compilation Unit @ %lx:\n"), cu_offset); - printf (_(" Length: %ld\n"), compunit.cu_length); - printf (_(" Version: %d\n"), compunit.cu_version); - printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset); - printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); + if (!do_loc) + { + printf (_(" Compilation Unit @ %lx:\n"), cu_offset); + printf (_(" Length: %ld\n"), compunit.cu_length); + printf (_(" Version: %d\n"), compunit.cu_version); + printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset); + printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); + } if (compunit.cu_version != 2 && compunit.cu_version != 3) { @@ -9384,28 +8771,608 @@ display_debug_info (Elf_Internal_Shdr *section, return 0; } - printf (_(" <%d><%lx>: Abbrev Number: %lu (%s)\n"), - level, - (unsigned long) (tags - section_begin - bytes_read), - abbrev_number, - get_TAG_name (entry->tag)); - + if (!do_loc) + printf (_(" <%d><%lx>: Abbrev Number: %lu (%s)\n"), + level, + (unsigned long) (tags - section_begin + - bytes_read), + abbrev_number, + get_TAG_name (entry->tag)); + for (attr = entry->first_attr; attr; attr = attr->next) tags = read_and_display_attr (attr->attribute, attr->form, tags, cu_offset, compunit.cu_pointer_size, offset_size, - compunit.cu_version); + compunit.cu_version, + &debug_information [unit], + do_loc); + + if (entry->children) + ++level; + } + } + + /* Set num_debug_info_entries here so that it can be used + to check if we need to proecess .debug_loc section. */ + if ((do_loc || do_debug_loc) + && num_debug_info_entries == 0) + num_debug_info_entries = num_units; + + if (!do_loc) + { + free_debug_range (); + free_debug_str (); + free_debug_loc (); + + printf ("\n"); + } + + return 1; +} + +/* Retrieve the pointer size associated with the given compilation unit. + Optionally the offset of this unit into the .debug_info section is + also retutned. If there is no .debug_info section then an error + message is issued and 0 is returned. If the requested comp unit has + not been defined in the .debug_info section then a warning message + is issued and the last know pointer size is returned. This message + is only issued once per section dumped per file dumped. */ + +static unsigned int +get_pointer_size_and_offset_of_comp_unit (unsigned int comp_unit, + const char * section_name, + unsigned long * offset_return) +{ + unsigned long offset = 0; + + if (num_debug_info_entries == 0) + error (_("%s section needs a populated .debug_info section\n"), + section_name); + + else if (comp_unit >= num_debug_info_entries) + { + if (!warned_about_missing_comp_units) + { + warn (_("%s section has more comp units than .debug_info section\n"), + section_name); + warn (_("assuming that the pointer size is %d, from the last comp unit in .debug_info\n\n"), + last_pointer_size); + warned_about_missing_comp_units = TRUE; + } + } + else + { + last_pointer_size = debug_information [comp_unit].pointer_size; + offset = debug_information [comp_unit].cu_offset; + } + + if (offset_return != NULL) + * offset_return = offset; + + return last_pointer_size; +} + +/* Locate and scan the .debug_info section in the file and record the pointer + sizes and offsets for the compilation units in it. Usually an executable + will have just one pointer size, but this is not guaranteed, and so we try + not to make any assumptions. Returns zero upon failure, or the number of + compilation units upon success. */ + +static unsigned int +get_debug_info (FILE * file) +{ + Elf_Internal_Shdr * section; + unsigned char * start; + int ret; + + /* Reset the last pointer size so that we can issue correct error + messages if we are displaying the contents of more than one section. */ + last_pointer_size = 0; + warned_about_missing_comp_units = FALSE; + + /* If we already have the information there is nothing else to do. */ + if (num_debug_info_entries > 0) + return num_debug_info_entries; + + section = find_section (".debug_info"); + if (section == NULL) + return 0; + + start = get_data (NULL, file, section->sh_offset, section->sh_size, + _("extracting information from .debug_info section")); + if (start == NULL) + return 0; + + ret = process_debug_info (section, start, file, 1); + free (start); + + return ret ? num_debug_info_entries : 0; +} + +static int +display_debug_lines (Elf_Internal_Shdr *section, + unsigned char *start, FILE *file) +{ + unsigned char *data = start; + unsigned char *end = start + section->sh_size; + unsigned int comp_unit = 0; + + printf (_("\nDump of debug contents of section %s:\n\n"), + SECTION_NAME (section)); + + get_debug_info (file); + + while (data < end) + { + DWARF2_Internal_LineInfo info; + unsigned char *standard_opcodes; + unsigned char *end_of_sequence; + unsigned char *hdrptr; + unsigned int pointer_size; + int initial_length_size; + int offset_size; + int i; + + hdrptr = data; + + /* Check the length of the block. */ + info.li_length = byte_get (hdrptr, 4); + hdrptr += 4; + + if (info.li_length == 0xffffffff) + { + /* This section is 64-bit DWARF 3. */ + info.li_length = byte_get (hdrptr, 8); + hdrptr += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + if (info.li_length + initial_length_size > section->sh_size) + { + warn + (_("The line info appears to be corrupt - the section is too small\n")); + return 0; + } + + /* Check its version number. */ + info.li_version = byte_get (hdrptr, 2); + hdrptr += 2; + if (info.li_version != 2 && info.li_version != 3) + { + warn (_("Only DWARF version 2 and 3 line info is currently supported.\n")); + return 0; + } + + info.li_prologue_length = byte_get (hdrptr, offset_size); + hdrptr += offset_size; + info.li_min_insn_length = byte_get (hdrptr, 1); + hdrptr++; + info.li_default_is_stmt = byte_get (hdrptr, 1); + hdrptr++; + info.li_line_base = byte_get (hdrptr, 1); + hdrptr++; + info.li_line_range = byte_get (hdrptr, 1); + hdrptr++; + info.li_opcode_base = byte_get (hdrptr, 1); + hdrptr++; + + /* Sign extend the line base field. */ + info.li_line_base <<= 24; + info.li_line_base >>= 24; + + /* Get the pointer size from the comp unit associated + with this block of line number information. */ + pointer_size = get_pointer_size_and_offset_of_comp_unit + (comp_unit, ".debug_lines", NULL); + comp_unit ++; + + printf (_(" Length: %ld\n"), info.li_length); + printf (_(" DWARF Version: %d\n"), info.li_version); + printf (_(" Prologue Length: %d\n"), info.li_prologue_length); + printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length); + printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt); + printf (_(" Line Base: %d\n"), info.li_line_base); + printf (_(" Line Range: %d\n"), info.li_line_range); + printf (_(" Opcode Base: %d\n"), info.li_opcode_base); + printf (_(" (Pointer size: %u)\n"), pointer_size); + + end_of_sequence = data + info.li_length + initial_length_size; + + reset_state_machine (info.li_default_is_stmt); + + /* Display the contents of the Opcodes table. */ + standard_opcodes = hdrptr; + + printf (_("\n Opcodes:\n")); + + for (i = 1; i < info.li_opcode_base; i++) + printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); + + /* Display the contents of the Directory table. */ + data = standard_opcodes + info.li_opcode_base - 1; + + if (*data == 0) + printf (_("\n The Directory Table is empty.\n")); + else + { + printf (_("\n The Directory Table:\n")); + + while (*data != 0) + { + printf (_(" %s\n"), data); + + data += strlen ((char *) data) + 1; + } + } + + /* Skip the NUL at the end of the table. */ + data++; + + /* Display the contents of the File Name table. */ + if (*data == 0) + printf (_("\n The File Name Table is empty.\n")); + else + { + printf (_("\n The File Name Table:\n")); + printf (_(" Entry\tDir\tTime\tSize\tName\n")); + + while (*data != 0) + { + unsigned char *name; + int bytes_read; + + printf (_(" %d\t"), ++state_machine_regs.last_file_entry); + name = data; + + data += strlen ((char *) data) + 1; + + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%s\n"), name); + } + } + + /* Skip the NUL at the end of the table. */ + data++; + + /* Now display the statements. */ + printf (_("\n Line Number Statements:\n")); + + while (data < end_of_sequence) + { + unsigned char op_code; + int adv; + int bytes_read; + + op_code = *data++; + + if (op_code >= info.li_opcode_base) + { + op_code -= info.li_opcode_base; + adv = (op_code / info.li_line_range) * info.li_min_insn_length; + state_machine_regs.address += adv; + printf (_(" Special opcode %d: advance Address by %d to 0x%lx"), + op_code, adv, state_machine_regs.address); + adv = (op_code % info.li_line_range) + info.li_line_base; + state_machine_regs.line += adv; + printf (_(" and Line by %d to %d\n"), + adv, state_machine_regs.line); + } + else switch (op_code) + { + case DW_LNS_extended_op: + data += process_extended_line_op (data, info.li_default_is_stmt, + pointer_size); + break; + + case DW_LNS_copy: + printf (_(" Copy\n")); + break; + + case DW_LNS_advance_pc: + adv = info.li_min_insn_length * read_leb128 (data, & bytes_read, 0); + data += bytes_read; + state_machine_regs.address += adv; + printf (_(" Advance PC by %d to %lx\n"), adv, + state_machine_regs.address); + break; + + case DW_LNS_advance_line: + adv = read_leb128 (data, & bytes_read, 1); + data += bytes_read; + state_machine_regs.line += adv; + printf (_(" Advance Line by %d to %d\n"), adv, + state_machine_regs.line); + break; + + case DW_LNS_set_file: + adv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set File Name to entry %d in the File Name Table\n"), + adv); + state_machine_regs.file = adv; + break; + + case DW_LNS_set_column: + adv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set column to %d\n"), adv); + state_machine_regs.column = adv; + break; + + case DW_LNS_negate_stmt: + adv = state_machine_regs.is_stmt; + adv = ! adv; + printf (_(" Set is_stmt to %d\n"), adv); + state_machine_regs.is_stmt = adv; + break; + + case DW_LNS_set_basic_block: + printf (_(" Set basic block\n")); + state_machine_regs.basic_block = 1; + break; + + case DW_LNS_const_add_pc: + adv = (((255 - info.li_opcode_base) / info.li_line_range) + * info.li_min_insn_length); + state_machine_regs.address += adv; + printf (_(" Advance PC by constant %d to 0x%lx\n"), adv, + state_machine_regs.address); + break; + + case DW_LNS_fixed_advance_pc: + adv = byte_get (data, 2); + data += 2; + state_machine_regs.address += adv; + printf (_(" Advance PC by fixed size amount %d to 0x%lx\n"), + adv, state_machine_regs.address); + break; + + case DW_LNS_set_prologue_end: + printf (_(" Set prologue_end to true\n")); + break; - if (entry->children) - ++level; + case DW_LNS_set_epilogue_begin: + printf (_(" Set epilogue_begin to true\n")); + break; + + case DW_LNS_set_isa: + adv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set ISA to %d\n"), adv); + break; + + default: + printf (_(" Unknown opcode %d with operands: "), op_code); + + for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + { + printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0), + i == 1 ? "" : ", "); + data += bytes_read; + } + putchar ('\n'); + break; + } } + putchar ('\n'); } - free_debug_range (); - free_debug_str (); - free_debug_loc (); + return 1; +} + +static int +display_debug_pubnames (Elf_Internal_Shdr *section, + unsigned char *start, + FILE *file ATTRIBUTE_UNUSED) +{ + DWARF2_Internal_PubNames pubnames; + unsigned char *end; + + end = start + section->sh_size; + + printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); + + while (start < end) + { + unsigned char *data; + unsigned long offset; + int offset_size, initial_length_size; + + data = start; + + pubnames.pn_length = byte_get (data, 4); + data += 4; + if (pubnames.pn_length == 0xffffffff) + { + pubnames.pn_length = byte_get (data, 8); + data += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + pubnames.pn_version = byte_get (data, 2); + data += 2; + pubnames.pn_offset = byte_get (data, offset_size); + data += offset_size; + pubnames.pn_size = byte_get (data, offset_size); + data += offset_size; + + start += pubnames.pn_length + initial_length_size; + + if (pubnames.pn_version != 2 && pubnames.pn_version != 3) + { + static int warned = 0; + + if (! warned) + { + warn (_("Only DWARF 2 and 3 pubnames are currently supported\n")); + warned = 1; + } + + continue; + } + + printf (_(" Length: %ld\n"), + pubnames.pn_length); + printf (_(" Version: %d\n"), + pubnames.pn_version); + printf (_(" Offset into .debug_info section: %ld\n"), + pubnames.pn_offset); + printf (_(" Size of area in .debug_info section: %ld\n"), + pubnames.pn_size); + + printf (_("\n Offset\tName\n")); + + do + { + offset = byte_get (data, offset_size); + + if (offset != 0) + { + data += offset_size; + printf (" %-6ld\t\t%s\n", offset, data); + data += strlen ((char *) data) + 1; + } + } + while (offset != 0); + } + + printf ("\n"); + return 1; +} + +static int +display_debug_macinfo (Elf_Internal_Shdr *section, + unsigned char *start, + FILE *file ATTRIBUTE_UNUSED) +{ + unsigned char *end = start + section->sh_size; + unsigned char *curr = start; + unsigned int bytes_read; + enum dwarf_macinfo_record_type op; + + printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); + + while (curr < end) + { + unsigned int lineno; + const char *string; + + op = *curr; + curr++; + + switch (op) + { + case DW_MACINFO_start_file: + { + unsigned int filenum; + + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + filenum = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + + printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), + lineno, filenum); + } + break; + + case DW_MACINFO_end_file: + printf (_(" DW_MACINFO_end_file\n")); + break; + + case DW_MACINFO_define: + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = curr; + curr += strlen (string) + 1; + printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"), + lineno, string); + break; + + case DW_MACINFO_undef: + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = curr; + curr += strlen (string) + 1; + printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), + lineno, string); + break; + + case DW_MACINFO_vendor_ext: + { + unsigned int constant; + + constant = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = curr; + curr += strlen (string) + 1; + printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"), + constant, string); + } + break; + } + } + + return 1; +} + + +static int +display_debug_abbrev (Elf_Internal_Shdr *section, + unsigned char *start, + FILE *file ATTRIBUTE_UNUSED) +{ + abbrev_entry *entry; + unsigned char *end = start + section->sh_size; + + printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section)); + + do + { + start = process_abbrev_section (start, end); + + if (first_abbrev == NULL) + continue; + + printf (_(" Number TAG\n")); + + for (entry = first_abbrev; entry; entry = entry->next) + { + abbrev_attr *attr; + + printf (_(" %ld %s [%s]\n"), + entry->entry, + get_TAG_name (entry->tag), + entry->children ? _("has children") : _("no children")); + + for (attr = entry->first_attr; attr; attr = attr->next) + printf (_(" %-18s %s\n"), + get_AT_name (attr->attribute), + get_FORM_name (attr->form)); + } + + free_abbrevs (); + } + while (start); printf ("\n"); @@ -9413,6 +9380,226 @@ display_debug_info (Elf_Internal_Shdr *section, } static int +display_debug_loc (Elf_Internal_Shdr *section, + unsigned char *start, FILE *file) +{ + unsigned char *section_end; + unsigned long bytes; + unsigned char *section_begin = start; + bfd_vma addr; + unsigned int num_loc_list = 0; + unsigned long last_offset = 0; + unsigned int first = 0; + unsigned int i; + unsigned int j; + int seen_first_offset = 0; + int use_debug_info = 1; + unsigned char *next; + + addr = section->sh_addr; + bytes = section->sh_size; + section_end = start + bytes; + + if (bytes == 0) + { + printf (_("\nThe .debug_loc section is empty.\n")); + return 0; + } + + get_debug_info (file); + + /* Check the order of location list in .debug_info section. If + offsets of location lists are in the ascending order, we can + use `debug_information' directly. */ + for (i = 0; i < num_debug_info_entries; i++) + { + unsigned int num; + + num = debug_information [i].num_loc_offsets; + num_loc_list += num; + + /* Check if we can use `debug_information' directly. */ + if (use_debug_info && num != 0) + { + if (!seen_first_offset) + { + /* This is the first location list. */ + last_offset = debug_information [i].loc_offsets [0]; + first = i; + seen_first_offset = 1; + j = 1; + } + else + j = 0; + + for (; j < num; j++) + { + if (last_offset > + debug_information [i].loc_offsets [j]) + { + use_debug_info = 0; + break; + } + last_offset = debug_information [i].loc_offsets [j]; + } + } + } + + if (!use_debug_info) + /* FIXME: Should we handle this case? */ + error (_("Location lists in .debug_info section aren't in ascending order!\n")); + + if (!seen_first_offset) + error (_("No location lists in .debug_info section!\n")); + + if (debug_information [first].loc_offsets [0] != 0) + warn (_("Location lists in .debug_loc section start at 0x%lx\n"), + debug_information [first].loc_offsets [0]); + + printf (_("Contents of the .debug_loc section:\n\n")); + printf (_(" Offset Begin End Expression\n")); + + seen_first_offset = 0; + for (i = first; i < num_debug_info_entries; i++) + { + unsigned long begin; + unsigned long end; + unsigned short length; + unsigned long offset; + unsigned int pointer_size; + unsigned long cu_offset; + + pointer_size = debug_information [i].pointer_size; + cu_offset = debug_information [i].cu_offset; + + for (j = 0; j < debug_information [i].num_loc_offsets; j++) + { + offset = debug_information [i].loc_offsets [j]; + next = section_begin + offset; + + if (!seen_first_offset) + seen_first_offset = 1; + else + { + if (start < next) + warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), + start, next); + else if (start > next) + warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), + start, next); + } + start = next; + + while (1) + { + begin = byte_get (start, pointer_size); + start += pointer_size; + end = byte_get (start, pointer_size); + start += pointer_size; + + if (begin == 0 && end == 0) + break; + + /* For now, skip any base address specifiers. */ + if (begin == 0xffffffff) + continue; + + begin += addr; + end += addr; + + length = byte_get (start, 2); + start += 2; + + printf (" %8.8lx %8.8lx %8.8lx (", + offset, begin, end); + decode_location_expression (start, pointer_size, length, + cu_offset); + printf (")\n"); + + if (begin >= end) + warn ("Bad location list at %8.8lx from %8.8lx to %8.8lx\n", + offset, begin, end); + + start += length; + } + + if (j < debug_information [i].num_loc_offsets -1) + printf (_(" <End of list>")); + printf ("\n"); + } + } + return 1; +} + +static int +display_debug_str (Elf_Internal_Shdr *section, + unsigned char *start, + FILE *file ATTRIBUTE_UNUSED) +{ + unsigned long bytes; + bfd_vma addr; + + addr = section->sh_addr; + bytes = section->sh_size; + + if (bytes == 0) + { + printf (_("\nThe .debug_str section is empty.\n")); + return 0; + } + + printf (_("Contents of the .debug_str section:\n\n")); + + while (bytes) + { + int j; + int k; + int lbytes; + + lbytes = (bytes > 16 ? 16 : bytes); + + printf (" 0x%8.8lx ", (unsigned long) addr); + + for (j = 0; j < 16; j++) + { + if (j < lbytes) + printf ("%2.2x", start[j]); + else + printf (" "); + + if ((j & 3) == 3) + printf (" "); + } + + for (j = 0; j < lbytes; j++) + { + k = start[j]; + if (k >= ' ' && k < 0x80) + printf ("%c", k); + else + printf ("."); + } + + putchar ('\n'); + + start += lbytes; + addr += lbytes; + bytes -= lbytes; + } + + return 1; +} + + +static int +display_debug_info (Elf_Internal_Shdr * section, + unsigned char * start, FILE * file) +{ + return process_debug_info (section, start, file, 0); +} + + +static int display_debug_aranges (Elf_Internal_Shdr *section, unsigned char *start, FILE *file ATTRIBUTE_UNUSED) @@ -9984,6 +10171,7 @@ display_debug_frames (Elf_Internal_Shdr *section, if (! do_debug_frames_interp && augmentation_data_len) { unsigned long i; + printf (" Augmentation data: "); for (i = 0; i < augmentation_data_len; ++i) printf (" %02x", augmentation_data[i]); @@ -10314,7 +10502,7 @@ display_debug_frames (Elf_Internal_Shdr *section, if (! do_debug_frames_interp) { printf (" DW_CFA_def_cfa_expression ("); - decode_location_expression (start, addr_size, ul); + decode_location_expression (start, addr_size, ul, 0); printf (")\n"); } fc->cfa_exp = 1; @@ -10327,7 +10515,7 @@ display_debug_frames (Elf_Internal_Shdr *section, if (! do_debug_frames_interp) { printf (" DW_CFA_expression: r%ld (", reg); - decode_location_expression (start, addr_size, ul); + decode_location_expression (start, addr_size, ul, 0); printf (")\n"); } fc->col_type[reg] = DW_CFA_expression; @@ -11559,6 +11747,9 @@ process_object (char *file_name, FILE *file) if (debug_information) { + for (i = 0; i < num_debug_info_entries; i++) + if (debug_information [i].loc_offsets != NULL) + free (debug_information [i].loc_offsets); free (debug_information); debug_information = NULL; num_debug_info_entries = 0; |