/* 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>
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
+static const char *debug_str_contents;
+static bfd_vma debug_str_size;
+
+static void
+load_debug_str (FILE *file)
{
- unsigned int pointer_size;
-}
-debug_info;
+ Elf_Internal_Shdr *sec;
-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;
+ /* If it is already loaded, do nothing. */
+ if (debug_str_contents != NULL)
+ return;
-static unsigned int
-get_pointer_size_of_comp_unit (unsigned int comp_unit,
- const char * section_name)
+ /* 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 (num_debug_info_entries == 0)
- {
- error (_("%s section needs a populated .debug_info section\n"),
- section_name);
- return 0;
- }
+ if (debug_str_contents == NULL)
+ return;
- 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;
+ free ((char *) debug_str_contents);
+ debug_str_contents = NULL;
+ debug_str_size = 0;
+}
- return last_pointer_size;
+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;
}
-/* 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. */
+static const char *debug_loc_contents;
+static bfd_vma debug_loc_size;
-static unsigned int
-get_debug_info (FILE * file)
+static void
+load_debug_loc (FILE *file)
{
- 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;
+ Elf_Internal_Shdr *sec;
- /* If we already have the information there is nothing else to do. */
- if (num_debug_info_entries > 0)
- return num_debug_info_entries;
+ /* If it is already loaded, do nothing. */
+ if (debug_loc_contents != NULL)
+ return;
- section = find_section (".debug_info");
- if (section == NULL)
- return 0;
+ /* Locate the .debug_loc section. */
+ sec = find_section (".debug_loc");
+ if (sec == NULL)
+ return;
- 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;
+ debug_loc_size = sec->sh_size;
- 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);
+ debug_loc_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size,
+ _("debug_loc section data"));
+}
- if (length == 0xffffffff)
- {
- length = byte_get (begin + 4, 8);
- begin += length + 12;
- }
- else
- begin += length + 4;
- }
+static void
+free_debug_loc (void)
+{
+ if (debug_loc_contents == NULL)
+ return;
- if (num_units == 0)
- {
- error (_("No comp units in .debug_info section ?"));
- free (start);
- return 0;
- }
+ free ((char *) debug_loc_contents);
+ debug_loc_contents = NULL;
+ debug_loc_size = 0;
+}
- /* 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;
- }
+static const char * debug_range_contents;
+static unsigned long debug_range_size;
- /* 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:
+static void
+load_debug_range (FILE *file)
+{
+ Elf_Internal_Shdr *sec;
- unit_length: 12 bytes
- version: 2 bytes
- debug_abbrev_offset: 8 bytes
- -----------------------------
- Total: 22 bytes */
+ /* If it is already loaded, do nothing. */
+ if (debug_range_contents != NULL)
+ return;
- 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:
+ /* Locate the .debug_str section. */
+ sec = find_section (".debug_ranges");
+ if (sec == NULL)
+ return;
- unit_length: 4 bytes
- version: 2 bytes
- debug_abbrev_offset: 4 bytes
- -----------------------------
- Total: 10 bytes */
+ debug_range_size = sec->sh_size;
- debug_information [unit].pointer_size = byte_get (begin + 10, 1);
- begin += length + 4;
- }
- }
+ debug_range_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size,
+ _("debug_range section data"));
+}
- free (start);
+static void
+free_debug_range (void)
+{
+ if (debug_range_contents == NULL)
+ return;
- return num_debug_info_entries = num_units;
+ free ((char *) debug_range_contents);
+ debug_range_contents = NULL;
+ debug_range_size = 0;
}
+/* Apply addends of RELA relocations. */
+
static int
-display_debug_lines (Elf_Internal_Shdr *section,
- unsigned char *start, FILE *file)
+debug_apply_rela_addends (FILE *file,
+ Elf_Internal_Shdr *section,
+ int reloc_size,
+ unsigned char *sec_data,
+ unsigned char *start,
+ unsigned char *end)
{
- 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));
+ Elf_Internal_Shdr *relsec;
- get_debug_info (file);
+ if (end - start < reloc_size)
+ return 1;
- while (data < end)
+ for (relsec = section_headers;
+ relsec < section_headers + elf_header.e_shnum;
+ ++relsec)
{
- 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;
+ unsigned long nrelas;
+ Elf_Internal_Rela *rela, *rp;
+ Elf_Internal_Shdr *symsec;
+ Elf_Internal_Sym *symtab;
+ Elf_Internal_Sym *sym;
- /* Check the length of the block. */
- info.li_length = byte_get (hdrptr, 4);
- hdrptr += 4;
+ if (relsec->sh_type != SHT_RELA
+ || SECTION_HEADER (relsec->sh_info) != section
+ || relsec->sh_size == 0)
+ continue;
- 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 (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size,
+ &rela, &nrelas))
+ return 0;
- 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;
- }
+ symsec = SECTION_HEADER (relsec->sh_link);
+ symtab = GET_ELF_SYMBOLS (file, symsec);
- /* Check its version number. */
- info.li_version = byte_get (hdrptr, 2);
- hdrptr += 2;
- if (info.li_version != 2 && info.li_version != 3)
+ for (rp = rela; rp < rela + nrelas; ++rp)
{
- warn (_("Only DWARF version 2 and 3 line info is currently supported.\n"));
- return 0;
- }
+ unsigned char *loc;
- 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++;
+ 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;
- /* Sign extend the line base field. */
- info.li_line_base <<= 24;
- info.li_line_base >>= 24;
+ if (is_32bit_elf)
+ {
+ sym = symtab + ELF32_R_SYM (rp->r_info);
- /* 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 ++;
+ 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
+ {
+ sym = symtab + ELF64_R_SYM (rp->r_info);
- 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);
+ 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;
+ }
+ }
- end_of_sequence = data + info.li_length + initial_length_size;
+ byte_put (loc, rp->r_addend, reloc_size);
+ }
- reset_state_machine (info.li_default_is_stmt);
+ free (symtab);
+ free (rela);
+ break;
+ }
+ return 1;
+}
- /* Display the contents of the Opcodes table. */
- standard_opcodes = hdrptr;
+/* FIXME: There are better and more efficient ways to handle
+ these structures. For now though, I just want something that
+ is simple to implement. */
+typedef struct abbrev_attr
+{
+ unsigned long attribute;
+ unsigned long form;
+ struct abbrev_attr *next;
+}
+abbrev_attr;
- printf (_("\n Opcodes:\n"));
+typedef struct abbrev_entry
+{
+ unsigned long entry;
+ unsigned long tag;
+ int children;
+ struct abbrev_attr *first_attr;
+ struct abbrev_attr *last_attr;
+ struct abbrev_entry *next;
+}
+abbrev_entry;
- for (i = 1; i < info.li_opcode_base; i++)
- printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]);
+static abbrev_entry *first_abbrev = NULL;
+static abbrev_entry *last_abbrev = NULL;
- /* Display the contents of the Directory table. */
- data = standard_opcodes + info.li_opcode_base - 1;
+static void
+free_abbrevs (void)
+{
+ abbrev_entry *abbrev;
- if (*data == 0)
- printf (_("\n The Directory Table is empty.\n"));
- else
- {
- printf (_("\n The Directory Table:\n"));
+ for (abbrev = first_abbrev; abbrev;)
+ {
+ abbrev_entry *next = abbrev->next;
+ abbrev_attr *attr;
- while (*data != 0)
- {
- printf (_(" %s\n"), data);
+ for (attr = abbrev->first_attr; attr;)
+ {
+ abbrev_attr *next = attr->next;
- data += strlen ((char *) data) + 1;
- }
+ free (attr);
+ attr = next;
}
- /* Skip the NUL at the end of the table. */
- data++;
+ free (abbrev);
+ abbrev = next;
+ }
- /* 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"));
+ last_abbrev = first_abbrev = NULL;
+}
- while (*data != 0)
- {
- unsigned char *name;
- int bytes_read;
+static void
+add_abbrev (unsigned long number, unsigned long tag, int children)
+{
+ abbrev_entry *entry;
- printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
- name = data;
+ entry = malloc (sizeof (*entry));
- data += strlen ((char *) data) + 1;
+ if (entry == NULL)
+ /* ugg */
+ return;
- 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);
- }
- }
+ entry->entry = number;
+ entry->tag = tag;
+ entry->children = children;
+ entry->first_attr = NULL;
+ entry->last_attr = NULL;
+ entry->next = NULL;
- /* Skip the NUL at the end of the table. */
- data++;
+ if (first_abbrev == NULL)
+ first_abbrev = entry;
+ else
+ last_abbrev->next = entry;
- /* Now display the statements. */
- printf (_("\n Line Number Statements:\n"));
+ last_abbrev = entry;
+}
- while (data < end_of_sequence)
- {
- unsigned char op_code;
- int adv;
- int bytes_read;
+static void
+add_abbrev_attr (unsigned long attribute, unsigned long form)
+{
+ abbrev_attr *attr;
- op_code = *data++;
+ attr = malloc (sizeof (*attr));
- 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;
+ if (attr == NULL)
+ /* ugg */
+ return;
- case DW_LNS_copy:
- printf (_(" Copy\n"));
- break;
+ attr->attribute = attribute;
+ attr->form = form;
+ attr->next = NULL;
- 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;
+ if (last_abbrev->first_attr == NULL)
+ last_abbrev->first_attr = attr;
+ else
+ last_abbrev->last_attr->next = attr;
- 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;
+ last_abbrev->last_attr = attr;
+}
- 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;
+/* Processes the (partial) contents of a .debug_abbrev section.
+ Returns NULL if the end of the section was encountered.
+ Returns the address after the last byte read if the end of
+ an abbreviation set was found. */
- 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;
+static unsigned char *
+process_abbrev_section (unsigned char *start, unsigned char *end)
+{
+ if (first_abbrev != NULL)
+ return NULL;
- 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;
+ while (start < end)
+ {
+ int bytes_read;
+ unsigned long entry;
+ unsigned long tag;
+ unsigned long attribute;
+ int children;
- case DW_LNS_set_basic_block:
- printf (_(" Set basic block\n"));
- state_machine_regs.basic_block = 1;
- break;
+ entry = read_leb128 (start, & bytes_read, 0);
+ start += bytes_read;
- 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);
-
- 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');
- }
-
- 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;
+ /* A single zero is supposed to end the section according
+ to the standard. If there's more, then signal that to
+ the caller. */
+ if (entry == 0)
+ return start == end ? NULL : 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;
- }
+ tag = read_leb128 (start, & bytes_read, 0);
+ start += bytes_read;
- 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;
+ children = *start++;
- start += pubnames.pn_length + initial_length_size;
+ add_abbrev (entry, tag, children);
- if (pubnames.pn_version != 2 && pubnames.pn_version != 3)
+ do
{
- 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);
+ unsigned long form;
- printf (_("\n Offset\tName\n"));
+ attribute = read_leb128 (start, & bytes_read, 0);
+ start += bytes_read;
- do
- {
- offset = byte_get (data, offset_size);
+ form = read_leb128 (start, & bytes_read, 0);
+ start += bytes_read;
- if (offset != 0)
- {
- data += offset_size;
- printf (" %-6ld\t\t%s\n", offset, data);
- data += strlen ((char *) data) + 1;
- }
+ if (attribute != 0)
+ add_abbrev_attr (attribute, form);
}
- while (offset != 0);
+ while (attribute != 0);
}
- printf ("\n");
- return 1;
+ return NULL;
}
static char *
}
}
-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)
{
}
}
-/* FIXME: There are better and more efficient ways to handle
- these structures. For now though, I just want something that
- is simple to implement. */
-typedef struct abbrev_attr
+static unsigned char *
+display_block (unsigned char *data, unsigned long length)
{
- unsigned long attribute;
- unsigned long form;
- struct abbrev_attr *next;
-}
-abbrev_attr;
-
-typedef struct abbrev_entry
-{
- unsigned long entry;
- unsigned long tag;
- int children;
- struct abbrev_attr *first_attr;
- struct abbrev_attr *last_attr;
- struct abbrev_entry *next;
-}
-abbrev_entry;
-
-static abbrev_entry *first_abbrev = NULL;
-static abbrev_entry *last_abbrev = NULL;
-
-static void
-free_abbrevs (void)
-{
- abbrev_entry *abbrev;
-
- for (abbrev = first_abbrev; abbrev;)
- {
- abbrev_entry *next = abbrev->next;
- abbrev_attr *attr;
-
- for (attr = abbrev->first_attr; attr;)
- {
- abbrev_attr *next = attr->next;
-
- free (attr);
- attr = next;
- }
-
- free (abbrev);
- abbrev = next;
- }
-
- last_abbrev = first_abbrev = NULL;
-}
-
-static void
-add_abbrev (unsigned long number, unsigned long tag, int children)
-{
- abbrev_entry *entry;
-
- entry = malloc (sizeof (*entry));
-
- if (entry == NULL)
- /* ugg */
- return;
-
- entry->entry = number;
- entry->tag = tag;
- entry->children = children;
- entry->first_attr = NULL;
- entry->last_attr = NULL;
- entry->next = NULL;
+ printf (_(" %lu byte block: "), length);
- if (first_abbrev == NULL)
- first_abbrev = entry;
- else
- last_abbrev->next = entry;
+ while (length --)
+ printf ("%lx ", (unsigned long) byte_get (data++, 1));
- last_abbrev = entry;
+ return data;
}
static void
-add_abbrev_attr (unsigned long attribute, unsigned long form)
-{
- abbrev_attr *attr;
-
- attr = malloc (sizeof (*attr));
-
- if (attr == NULL)
- /* ugg */
- return;
-
- attr->attribute = attribute;
- attr->form = form;
- attr->next = NULL;
-
- if (last_abbrev->first_attr == NULL)
- last_abbrev->first_attr = attr;
- else
- last_abbrev->last_attr->next = attr;
-
- last_abbrev->last_attr = attr;
-}
-
-/* Processes the (partial) contents of a .debug_abbrev section.
- Returns NULL if the end of the section was encountered.
- Returns the address after the last byte read if the end of
- an abbreviation set was found. */
-
-static unsigned char *
-process_abbrev_section (unsigned char *start, unsigned char *end)
-{
- if (first_abbrev != NULL)
- return NULL;
-
- while (start < end)
- {
- int bytes_read;
- unsigned long entry;
- unsigned long tag;
- unsigned long attribute;
- int children;
-
- entry = read_leb128 (start, & bytes_read, 0);
- start += bytes_read;
-
- /* A single zero is supposed to end the section according
- to the standard. If there's more, then signal that to
- the caller. */
- if (entry == 0)
- return start == end ? NULL : start;
-
- tag = read_leb128 (start, & bytes_read, 0);
- start += bytes_read;
-
- children = *start++;
-
- add_abbrev (entry, tag, children);
-
- do
- {
- unsigned long form;
-
- attribute = read_leb128 (start, & bytes_read, 0);
- start += bytes_read;
-
- form = read_leb128 (start, & bytes_read, 0);
- start += bytes_read;
-
- if (attribute != 0)
- add_abbrev_attr (attribute, form);
- }
- while (attribute != 0);
- }
-
- return NULL;
-}
-
-
-static int
-display_debug_macinfo (Elf_Internal_Shdr *section,
- unsigned char *start,
- FILE *file ATTRIBUTE_UNUSED)
+decode_location_expression (unsigned char * data,
+ unsigned int pointer_size,
+ unsigned long length,
+ unsigned long cu_offset)
{
- 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));
+ unsigned op;
+ int bytes_read;
+ unsigned long uvalue;
+ unsigned char *end = data + length;
- while (curr < end)
+ while (data < end)
{
- unsigned int lineno;
- const char *string;
-
- op = *curr;
- curr++;
+ op = *data++;
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);
- }
+ case DW_OP_addr:
+ printf ("DW_OP_addr: %lx",
+ (unsigned long) byte_get (data, pointer_size));
+ data += pointer_size;
break;
-
- case DW_MACINFO_end_file:
- printf (_(" DW_MACINFO_end_file\n"));
+ case DW_OP_deref:
+ printf ("DW_OP_deref");
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);
+ case DW_OP_const1u:
+ printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1));
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);
+ case DW_OP_const1s:
+ printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1));
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");
-
- return 1;
-}
-
-
-static unsigned char *
-display_block (unsigned char *data, unsigned long length)
-{
- printf (_(" %lu byte block: "), length);
-
- while (length --)
- printf ("%lx ", (unsigned long) byte_get (data++, 1));
-
- return data;
-}
-
-static void
-decode_location_expression (unsigned char * data,
- unsigned int pointer_size,
- unsigned long length)
-{
- unsigned op;
- int bytes_read;
- unsigned long uvalue;
- unsigned char *end = data + length;
-
- while (data < end)
- {
- op = *data++;
-
- switch (op)
- {
- case DW_OP_addr:
- printf ("DW_OP_addr: %lx",
- (unsigned long) byte_get (data, pointer_size));
- data += pointer_size;
- break;
- case DW_OP_deref:
- printf ("DW_OP_deref");
- break;
- case DW_OP_const1u:
- printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1));
- break;
- case DW_OP_const1s:
- printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1));
- break;
- case DW_OP_const2u:
- printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2));
- data += 2;
+ case DW_OP_const2u:
+ printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2));
+ data += 2;
break;
case DW_OP_const2s:
printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2));
data += 2;
break;
- case DW_OP_lit0:
- case DW_OP_lit1:
- case DW_OP_lit2:
- case DW_OP_lit3:
- case DW_OP_lit4:
- case DW_OP_lit5:
- case DW_OP_lit6:
- case DW_OP_lit7:
- case DW_OP_lit8:
- case DW_OP_lit9:
- case DW_OP_lit10:
- case DW_OP_lit11:
- case DW_OP_lit12:
- case DW_OP_lit13:
- case DW_OP_lit14:
- case DW_OP_lit15:
- case DW_OP_lit16:
- case DW_OP_lit17:
- case DW_OP_lit18:
- case DW_OP_lit19:
- case DW_OP_lit20:
- case DW_OP_lit21:
- case DW_OP_lit22:
- case DW_OP_lit23:
- case DW_OP_lit24:
- case DW_OP_lit25:
- case DW_OP_lit26:
- case DW_OP_lit27:
- case DW_OP_lit28:
- case DW_OP_lit29:
- case DW_OP_lit30:
- case DW_OP_lit31:
- printf ("DW_OP_lit%d", op - DW_OP_lit0);
- break;
+ case DW_OP_lit0:
+ case DW_OP_lit1:
+ case DW_OP_lit2:
+ case DW_OP_lit3:
+ case DW_OP_lit4:
+ case DW_OP_lit5:
+ case DW_OP_lit6:
+ case DW_OP_lit7:
+ case DW_OP_lit8:
+ case DW_OP_lit9:
+ case DW_OP_lit10:
+ case DW_OP_lit11:
+ case DW_OP_lit12:
+ case DW_OP_lit13:
+ case DW_OP_lit14:
+ case DW_OP_lit15:
+ case DW_OP_lit16:
+ case DW_OP_lit17:
+ case DW_OP_lit18:
+ case DW_OP_lit19:
+ case DW_OP_lit20:
+ case DW_OP_lit21:
+ case DW_OP_lit22:
+ case DW_OP_lit23:
+ case DW_OP_lit24:
+ case DW_OP_lit25:
+ case DW_OP_lit26:
+ case DW_OP_lit27:
+ case DW_OP_lit28:
+ case DW_OP_lit29:
+ case DW_OP_lit30:
+ case DW_OP_lit31:
+ printf ("DW_OP_lit%d", op - DW_OP_lit0);
+ break;
+
+ case DW_OP_reg0:
+ case DW_OP_reg1:
+ case DW_OP_reg2:
+ case DW_OP_reg3:
+ case DW_OP_reg4:
+ case DW_OP_reg5:
+ case DW_OP_reg6:
+ case DW_OP_reg7:
+ case DW_OP_reg8:
+ case DW_OP_reg9:
+ case DW_OP_reg10:
+ case DW_OP_reg11:
+ case DW_OP_reg12:
+ case DW_OP_reg13:
+ case DW_OP_reg14:
+ case DW_OP_reg15:
+ case DW_OP_reg16:
+ case DW_OP_reg17:
+ case DW_OP_reg18:
+ case DW_OP_reg19:
+ case DW_OP_reg20:
+ case DW_OP_reg21:
+ case DW_OP_reg22:
+ case DW_OP_reg23:
+ case DW_OP_reg24:
+ case DW_OP_reg25:
+ case DW_OP_reg26:
+ case DW_OP_reg27:
+ case DW_OP_reg28:
+ case DW_OP_reg29:
+ case DW_OP_reg30:
+ case DW_OP_reg31:
+ printf ("DW_OP_reg%d", op - DW_OP_reg0);
+ break;
+
+ case DW_OP_breg0:
+ case DW_OP_breg1:
+ case DW_OP_breg2:
+ case DW_OP_breg3:
+ case DW_OP_breg4:
+ case DW_OP_breg5:
+ case DW_OP_breg6:
+ case DW_OP_breg7:
+ case DW_OP_breg8:
+ case DW_OP_breg9:
+ case DW_OP_breg10:
+ case DW_OP_breg11:
+ case DW_OP_breg12:
+ case DW_OP_breg13:
+ case DW_OP_breg14:
+ case DW_OP_breg15:
+ case DW_OP_breg16:
+ case DW_OP_breg17:
+ case DW_OP_breg18:
+ case DW_OP_breg19:
+ case DW_OP_breg20:
+ case DW_OP_breg21:
+ case DW_OP_breg22:
+ case DW_OP_breg23:
+ case DW_OP_breg24:
+ case DW_OP_breg25:
+ case DW_OP_breg26:
+ case DW_OP_breg27:
+ case DW_OP_breg28:
+ case DW_OP_breg29:
+ case DW_OP_breg30:
+ case DW_OP_breg31:
+ printf ("DW_OP_breg%d: %ld", op - DW_OP_breg0,
+ read_leb128 (data, &bytes_read, 1));
+ data += bytes_read;
+ break;
+
+ case DW_OP_regx:
+ printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0));
+ data += bytes_read;
+ break;
+ case DW_OP_fbreg:
+ printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1));
+ data += bytes_read;
+ break;
+ case DW_OP_bregx:
+ uvalue = read_leb128 (data, &bytes_read, 0);
+ data += bytes_read;
+ printf ("DW_OP_bregx: %lu %ld", uvalue,
+ read_leb128 (data, &bytes_read, 1));
+ data += bytes_read;
+ break;
+ case DW_OP_piece:
+ printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0));
+ data += bytes_read;
+ break;
+ case DW_OP_deref_size:
+ printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1));
+ break;
+ case DW_OP_xderef_size:
+ printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1));
+ break;
+ case DW_OP_nop:
+ printf ("DW_OP_nop");
+ break;
+
+ /* DWARF 3 extensions. */
+ case DW_OP_push_object_address:
+ printf ("DW_OP_push_object_address");
+ break;
+ case DW_OP_call2:
+ /* 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:
+ /* 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:
+ printf ("DW_OP_call_ref");
+ break;
+
+ /* GNU extensions. */
+ case DW_OP_GNU_push_tls_address:
+ printf ("DW_OP_GNU_push_tls_address");
+ break;
+
+ default:
+ if (op >= DW_OP_lo_user
+ && op <= DW_OP_hi_user)
+ printf (_("(User defined location op)"));
+ else
+ printf (_("(Unknown location op)"));
+ /* No way to tell where the next op is, so just bail. */
+ return;
+ }
+
+ /* Separate the ops. */
+ if (data < end)
+ printf ("; ");
+ }
+}
+
+/* Decode a DW_AT_ranges attribute for 64bit DWARF3 . */
+
+static void
+decode_64bit_range (unsigned long offset, bfd_vma base_address)
+{
+ const char * start = debug_range_contents + offset;
+ const char * end = debug_range_contents + debug_range_size;
+
+ do
+ {
+ bfd_vma a;
+ bfd_vma b;
+
+ a = byte_get ((unsigned char *) start, 8);
+ b = byte_get ((unsigned char *) start + 8, 8);
+
+ if (a == 0xffffffff)
+ {
+ base_address = b;
+ }
+ else if (a == 0 && b == 0)
+ break;
+ else if (a > b)
+ printf (_(" [corrupt: start > end]"));
+ else
+ {
+ printf (" ");
+ print_vma (base_address + a, PREFIX_HEX);
+ printf (" - ");
+ print_vma (base_address + b, PREFIX_HEX);
+ printf (", ");
+ }
+
+ start += 16;
+ }
+ while (start < end);
+}
+
+/* Decode a DW_AT_ranges attribute. */
+
+static void
+decode_range (unsigned long offset, bfd_vma base_address)
+{
+ const char * start;
+ const char * end;
+
+ if (offset >= (debug_range_size - 8))
+ {
+ printf (_("[corrupt: offset is outside the .debug_ranges section]"));
+ return;
+ }
+
+ /* Since all entries in the .debug_ranges section are pairs of either
+ 4-byte integers (32-bit DWARF3) or 8-byte integers (64-bit DWARF3)
+ the offset should always be a multiple of 8 bytes. */
+ if (offset % 8)
+ {
+ printf (_("[corrupt: offset is not a multiple of 8]"));
+ return;
+ }
+
+ start = debug_range_contents + offset;
+
+ if (offset > 0
+ /* Be paranoid - check to see if the previous
+ two words were and end-of-range marker. */
+ && (byte_get ((unsigned char *) start - 4, 4) != 0
+ || byte_get ((unsigned char *) start - 8, 4) != 0))
+ {
+ printf (_("[corrupt: offset is not at the start of a range]"));
+ return;
+ }
+
+ end = debug_range_contents + debug_range_size;
+
+ printf ("(");
+ do
+ {
+ unsigned long a;
+ unsigned long b;
+
+ a = byte_get ((unsigned char *) start, 4);
+ b = byte_get ((unsigned char *) start + 4, 4);
+
+ if (a == 0xffffffff)
+ {
+ if (b == 0xffffffff)
+ {
+ decode_64bit_range (offset, base_address);
+ return;
+ }
+
+ base_address = b;
+ }
+ else if (a == 0 && b == 0)
+ break;
+ else if (a > b)
+ printf (_("[corrupt: start > end]"));
+ else
+ {
+ if (start > debug_range_contents + offset)
+ printf (", ");
+
+ printf (_("0x%lx - 0x%lx"),
+ (unsigned long) base_address + a,
+ (unsigned long) base_address + b);
+ }
+
+ start += 8;
+ }
+ while (start < end);
+ 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,
+ unsigned long form,
+ unsigned char *data,
+ unsigned long cu_offset,
+ unsigned long pointer_size,
+ unsigned long offset_size,
+ int dwarf_version,
+ debug_info *debug_info_p,
+ int do_loc)
+{
+ static unsigned long saved_DW_AT_low_pc = 0;
+ unsigned long uvalue = 0;
+ unsigned char *block_start = NULL;
+ int bytes_read;
+
+ switch (form)
+ {
+ default:
+ break;
+
+ case DW_FORM_ref_addr:
+ if (dwarf_version == 2)
+ {
+ uvalue = byte_get (data, pointer_size);
+ data += pointer_size;
+ }
+ else if (dwarf_version == 3)
+ {
+ uvalue = byte_get (data, offset_size);
+ data += offset_size;
+ }
+ else
+ {
+ error (_("Internal error: DWARF version is not 2 or 3.\n"));
+ }
+ break;
+
+ case DW_FORM_addr:
+ uvalue = byte_get (data, pointer_size);
+ data += pointer_size;
+ break;
+
+ case DW_FORM_strp:
+ uvalue = byte_get (data, offset_size);
+ data += offset_size;
+ break;
+
+ case DW_FORM_ref1:
+ case DW_FORM_flag:
+ case DW_FORM_data1:
+ uvalue = byte_get (data++, 1);
+ break;
+
+ case DW_FORM_ref2:
+ case DW_FORM_data2:
+ uvalue = byte_get (data, 2);
+ data += 2;
+ break;
+
+ case DW_FORM_ref4:
+ case DW_FORM_data4:
+ uvalue = byte_get (data, 4);
+ data += 4;
+ break;
+
+ case DW_FORM_sdata:
+ uvalue = read_leb128 (data, & bytes_read, 1);
+ data += bytes_read;
+ break;
+
+ case DW_FORM_ref_udata:
+ case DW_FORM_udata:
+ uvalue = read_leb128 (data, & bytes_read, 0);
+ data += bytes_read;
+ break;
+
+ case DW_FORM_indirect:
+ form = read_leb128 (data, & bytes_read, 0);
+ data += bytes_read;
+ 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:
+ if (!do_loc)
+ printf (" <#%lx>", uvalue);
+ break;
+
+ case DW_FORM_ref1:
+ case DW_FORM_ref2:
+ case DW_FORM_ref4:
+ case DW_FORM_ref_udata:
+ if (!do_loc)
+ printf (" <%lx>", uvalue + cu_offset);
+ break;
+
+ case DW_FORM_data4:
+ case DW_FORM_addr:
+ if (!do_loc)
+ printf (" %#lx", uvalue);
+ break;
+
+ case DW_FORM_flag:
+ case DW_FORM_data1:
+ case DW_FORM_data2:
+ case DW_FORM_sdata:
+ case DW_FORM_udata:
+ if (!do_loc)
+ printf (" %ld", uvalue);
+ break;
+
+ case DW_FORM_ref8:
+ case DW_FORM_data8:
+ 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:
+ 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;
+ 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;
+ 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;
+ 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;
+ if (do_loc)
+ data = block_start + uvalue;
+ else
+ data = display_block (block_start, uvalue);
+ break;
+
+ case DW_FORM_strp:
+ if (!do_loc)
+ printf (_(" (indirect string, offset: 0x%lx): %s"),
+ uvalue, fetch_indirect_string (uvalue));
+ break;
+
+ case DW_FORM_indirect:
+ /* Handled above. */
+ break;
+
+ default:
+ warn (_("Unrecognized form: %d\n"), form);
+ break;
+ }
+
+ /* 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");
+
+ switch (attribute)
+ {
+ case DW_AT_inline:
+ switch (uvalue)
+ {
+ case DW_INL_not_inlined:
+ printf (_("(not inlined)"));
+ break;
+ case DW_INL_inlined:
+ printf (_("(inlined)"));
+ break;
+ case DW_INL_declared_not_inlined:
+ printf (_("(declared as inline but ignored)"));
+ break;
+ case DW_INL_declared_inlined:
+ printf (_("(declared as inline and inlined)"));
+ break;
+ default:
+ printf (_(" (Unknown inline attribute value: %lx)"), uvalue);
+ break;
+ }
+ break;
+
+ case DW_AT_language:
+ switch (uvalue)
+ {
+ case DW_LANG_C: printf ("(non-ANSI C)"); break;
+ case DW_LANG_C89: printf ("(ANSI C)"); break;
+ case DW_LANG_C_plus_plus: printf ("(C++)"); break;
+ case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break;
+ case DW_LANG_Fortran90: printf ("(Fortran 90)"); break;
+ case DW_LANG_Modula2: printf ("(Modula 2)"); break;
+ case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break;
+ case DW_LANG_Ada83: printf ("(Ada)"); break;
+ case DW_LANG_Cobol74: printf ("(Cobol 74)"); break;
+ case DW_LANG_Cobol85: printf ("(Cobol 85)"); break;
+ /* DWARF 2.1 values. */
+ case DW_LANG_C99: printf ("(ANSI C99)"); break;
+ case DW_LANG_Ada95: printf ("(ADA 95)"); break;
+ case DW_LANG_Fortran95: printf ("(Fortran 95)"); break;
+ /* MIPS extension. */
+ case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break;
+ /* UPC extension. */
+ case DW_LANG_Upc: printf ("(Unified Parallel C)"); break;
+ default:
+ printf ("(Unknown: %lx)", uvalue);
+ break;
+ }
+ break;
+
+ case DW_AT_encoding:
+ switch (uvalue)
+ {
+ case DW_ATE_void: printf ("(void)"); break;
+ case DW_ATE_address: printf ("(machine address)"); break;
+ case DW_ATE_boolean: printf ("(boolean)"); break;
+ case DW_ATE_complex_float: printf ("(complex float)"); break;
+ case DW_ATE_float: printf ("(float)"); break;
+ case DW_ATE_signed: printf ("(signed)"); break;
+ case DW_ATE_signed_char: printf ("(signed char)"); break;
+ case DW_ATE_unsigned: printf ("(unsigned)"); break;
+ case DW_ATE_unsigned_char: printf ("(unsigned char)"); break;
+ /* DWARF 2.1 value. */
+ case DW_ATE_imaginary_float: printf ("(imaginary float)"); break;
+ default:
+ if (uvalue >= DW_ATE_lo_user
+ && uvalue <= DW_ATE_hi_user)
+ printf ("(user defined type)");
+ else
+ printf ("(unknown type)");
+ break;
+ }
+ break;
+
+ case DW_AT_accessibility:
+ switch (uvalue)
+ {
+ case DW_ACCESS_public: printf ("(public)"); break;
+ case DW_ACCESS_protected: printf ("(protected)"); break;
+ case DW_ACCESS_private: printf ("(private)"); break;
+ default:
+ printf ("(unknown accessibility)");
+ break;
+ }
+ break;
+
+ case DW_AT_visibility:
+ switch (uvalue)
+ {
+ case DW_VIS_local: printf ("(local)"); break;
+ case DW_VIS_exported: printf ("(exported)"); break;
+ case DW_VIS_qualified: printf ("(qualified)"); break;
+ default: printf ("(unknown visibility)"); break;
+ }
+ break;
+
+ case DW_AT_virtuality:
+ switch (uvalue)
+ {
+ case DW_VIRTUALITY_none: printf ("(none)"); break;
+ case DW_VIRTUALITY_virtual: printf ("(virtual)"); break;
+ case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break;
+ default: printf ("(unknown virtuality)"); break;
+ }
+ break;
+
+ case DW_AT_identifier_case:
+ switch (uvalue)
+ {
+ case DW_ID_case_sensitive: printf ("(case_sensitive)"); break;
+ case DW_ID_up_case: printf ("(up_case)"); break;
+ case DW_ID_down_case: printf ("(down_case)"); break;
+ case DW_ID_case_insensitive: printf ("(case_insensitive)"); break;
+ default: printf ("(unknown case)"); break;
+ }
+ break;
+
+ case DW_AT_calling_convention:
+ switch (uvalue)
+ {
+ case DW_CC_normal: printf ("(normal)"); break;
+ case DW_CC_program: printf ("(program)"); break;
+ case DW_CC_nocall: printf ("(nocall)"); break;
+ default:
+ if (uvalue >= DW_CC_lo_user
+ && uvalue <= DW_CC_hi_user)
+ printf ("(user defined)");
+ else
+ printf ("(unknown convention)");
+ }
+ break;
+
+ case DW_AT_ordering:
+ switch (uvalue)
+ {
+ case -1: printf ("(undefined)"); break;
+ case 0: printf ("(row major)"); break;
+ case 1: printf ("(column major)"); break;
+ }
+ break;
+
+ 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 (block_start)
+ {
+ printf ("(");
+ decode_location_expression (block_start, pointer_size, uvalue, cu_offset);
+ printf (")");
+ }
+ else if (form == DW_FORM_data4 || form == DW_FORM_data8)
+ printf (_("(location list)"));
+
+ break;
+
+ case DW_AT_low_pc:
+ /* This is a hack. We keep track of the DW_AT_low_pc attributes
+ and use them when decoding DW_AT_ranges attributes. The
+ assumption here is that we are decoding the attributes in order
+ and so the correct base address for the range is the low_pc. */
+ saved_DW_AT_low_pc = uvalue;
+ break;
+
+ case DW_AT_ranges:
+ decode_range (uvalue, saved_DW_AT_low_pc);
+ break;
+
+ default:
+ break;
+ }
+
+ 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;
+ }
+ }
+}
- case DW_OP_reg0:
- case DW_OP_reg1:
- case DW_OP_reg2:
- case DW_OP_reg3:
- case DW_OP_reg4:
- case DW_OP_reg5:
- case DW_OP_reg6:
- case DW_OP_reg7:
- case DW_OP_reg8:
- case DW_OP_reg9:
- case DW_OP_reg10:
- case DW_OP_reg11:
- case DW_OP_reg12:
- case DW_OP_reg13:
- case DW_OP_reg14:
- case DW_OP_reg15:
- case DW_OP_reg16:
- case DW_OP_reg17:
- case DW_OP_reg18:
- case DW_OP_reg19:
- case DW_OP_reg20:
- case DW_OP_reg21:
- case DW_OP_reg22:
- case DW_OP_reg23:
- case DW_OP_reg24:
- case DW_OP_reg25:
- case DW_OP_reg26:
- case DW_OP_reg27:
- case DW_OP_reg28:
- case DW_OP_reg29:
- case DW_OP_reg30:
- case DW_OP_reg31:
- printf ("DW_OP_reg%d", op - DW_OP_reg0);
- break;
+static unsigned char *
+read_and_display_attr (unsigned long attribute,
+ unsigned long form,
+ unsigned char *data,
+ unsigned long cu_offset,
+ unsigned long pointer_size,
+ unsigned long offset_size,
+ int dwarf_version,
+ debug_info *debug_info_p,
+ int do_loc)
+{
+ 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, debug_info_p,
+ do_loc);
+ if (!do_loc)
+ printf ("\n");
+ return data;
+}
- case DW_OP_breg0:
- case DW_OP_breg1:
- case DW_OP_breg2:
- case DW_OP_breg3:
- case DW_OP_breg4:
- case DW_OP_breg5:
- case DW_OP_breg6:
- case DW_OP_breg7:
- case DW_OP_breg8:
- case DW_OP_breg9:
- case DW_OP_breg10:
- case DW_OP_breg11:
- case DW_OP_breg12:
- case DW_OP_breg13:
- case DW_OP_breg14:
- case DW_OP_breg15:
- case DW_OP_breg16:
- case DW_OP_breg17:
- case DW_OP_breg18:
- case DW_OP_breg19:
- case DW_OP_breg20:
- case DW_OP_breg21:
- case DW_OP_breg22:
- case DW_OP_breg23:
- case DW_OP_breg24:
- case DW_OP_breg25:
- case DW_OP_breg26:
- case DW_OP_breg27:
- case DW_OP_breg28:
- case DW_OP_breg29:
- case DW_OP_breg30:
- case DW_OP_breg31:
- printf ("DW_OP_breg%d: %ld", op - DW_OP_breg0,
- read_leb128 (data, &bytes_read, 1));
- data += bytes_read;
- break;
- case DW_OP_regx:
- printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0));
- data += bytes_read;
- break;
- case DW_OP_fbreg:
- printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1));
- data += bytes_read;
- break;
- case DW_OP_bregx:
- uvalue = read_leb128 (data, &bytes_read, 0);
- data += bytes_read;
- printf ("DW_OP_bregx: %lu %ld", uvalue,
- read_leb128 (data, &bytes_read, 1));
- data += bytes_read;
- break;
- case DW_OP_piece:
- printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0));
- data += bytes_read;
- break;
- case DW_OP_deref_size:
- printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1));
- break;
- case DW_OP_xderef_size:
- printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1));
- break;
- case DW_OP_nop:
- printf ("DW_OP_nop");
- break;
+/* 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. */
- /* DWARF 3 extensions. */
- case DW_OP_push_object_address:
- printf ("DW_OP_push_object_address");
- break;
- case DW_OP_call2:
- printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2));
- data += 2;
- break;
- case DW_OP_call4:
- printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4));
- data += 4;
- break;
- case DW_OP_call_ref:
- printf ("DW_OP_call_ref");
- break;
+static int
+process_debug_info (Elf_Internal_Shdr *section, unsigned char *start,
+ FILE *file, int do_loc)
+{
+ unsigned char *end = start + section->sh_size;
+ unsigned char *section_begin;
+ unsigned int unit;
+ unsigned int num_units = 0;
- /* GNU extensions. */
- case DW_OP_GNU_push_tls_address:
- printf ("DW_OP_GNU_push_tls_address");
- break;
+ if ((do_loc || do_debug_loc)
+ && num_debug_info_entries == 0)
+ {
+ unsigned long length;
- default:
- if (op >= DW_OP_lo_user
- && op <= DW_OP_hi_user)
- printf (_("(User defined location op)"));
+ /* First scan the section to get the number of comp units. */
+ for (section_begin = start, num_units = 0; section_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 (section_begin, 4);
+
+ if (length == 0xffffffff)
+ {
+ length = byte_get (section_begin + 4, 8);
+ section_begin += length + 12;
+ }
else
- printf (_("(Unknown location op)"));
- /* No way to tell where the next op is, so just bail. */
- return;
+ section_begin += length + 4;
}
- /* Separate the ops. */
- if (data < end)
- printf ("; ");
+ if (num_units == 0)
+ {
+ error (_("No comp units in .debug_info section ?"));
+ return 0;
+ }
+
+ /* 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;
+ }
}
-}
-static const char *debug_loc_contents;
-static bfd_vma debug_loc_size;
+ if (!do_loc)
+ {
+ printf (_("The section %s contains:\n\n"),
+ SECTION_NAME (section));
-static void
-load_debug_loc (FILE *file)
-{
- Elf_Internal_Shdr *sec;
+ load_debug_str (file);
+ load_debug_loc (file);
+ load_debug_range (file);
+ }
- /* If it is already loaded, do nothing. */
- if (debug_loc_contents != NULL)
- return;
+ for (section_begin = start, unit = 0; start < end; unit++)
+ {
+ DWARF2_Internal_CompUnit compunit;
+ unsigned char *hdrptr;
+ unsigned char *cu_abbrev_offset_ptr;
+ unsigned char *tags;
+ int level;
+ unsigned long cu_offset;
+ int offset_size;
+ int initial_length_size;
- /* Locate the .debug_loc section. */
- sec = find_section (".debug_loc");
- if (sec == NULL)
- return;
+ hdrptr = start;
- debug_loc_size = sec->sh_size;
+ compunit.cu_length = byte_get (hdrptr, 4);
+ hdrptr += 4;
- debug_loc_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size,
- _("debug_loc section data"));
-}
+ if (compunit.cu_length == 0xffffffff)
+ {
+ compunit.cu_length = byte_get (hdrptr, 8);
+ hdrptr += 8;
+ offset_size = 8;
+ initial_length_size = 12;
+ }
+ else
+ {
+ offset_size = 4;
+ initial_length_size = 4;
+ }
-static void
-free_debug_loc (void)
-{
- if (debug_loc_contents == NULL)
- return;
+ compunit.cu_version = byte_get (hdrptr, 2);
+ hdrptr += 2;
+
+ cu_offset = start - section_begin;
+ start += compunit.cu_length + initial_length_size;
- free ((char *) debug_loc_contents);
- debug_loc_contents = NULL;
- debug_loc_size = 0;
-}
+ if (elf_header.e_type == ET_REL
+ && !debug_apply_rela_addends (file, section, offset_size,
+ section_begin, hdrptr, start))
+ return 0;
+ cu_abbrev_offset_ptr = hdrptr;
+ compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
+ hdrptr += offset_size;
-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;
+ 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;
+ }
- addr = section->sh_addr;
- bytes = section->sh_size;
- section_end = start + bytes;
+ tags = hdrptr;
- if (bytes == 0)
- {
- printf (_("\nThe .debug_loc section is empty.\n"));
- return 0;
- }
+ 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);
+ }
- get_debug_info (file);
+ if (compunit.cu_version != 2 && compunit.cu_version != 3)
+ {
+ warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n"));
+ continue;
+ }
- printf (_("Contents of the .debug_loc section:\n\n"));
- printf (_("\n Offset Begin End Expression\n"));
+ free_abbrevs ();
- while (start < section_end)
- {
- unsigned long begin;
- unsigned long end;
- unsigned short length;
- unsigned long offset;
- unsigned int pointer_size;
+ /* Read in the abbrevs used by this compilation unit. */
+ {
+ Elf_Internal_Shdr *sec;
+ unsigned char *begin;
- offset = start - section_begin;
+ /* Locate the .debug_abbrev section and process it. */
+ sec = find_section (".debug_abbrev");
+ if (sec == NULL)
+ {
+ warn (_("Unable to locate .debug_abbrev section!\n"));
+ return 0;
+ }
- /* 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");
+ begin = get_data (NULL, file, sec->sh_offset, sec->sh_size,
+ _("debug_abbrev section data"));
+ if (!begin)
+ return 0;
- comp_unit ++;
+ process_abbrev_section (begin + compunit.cu_abbrev_offset,
+ begin + sec->sh_size);
+
+ free (begin);
+ }
- while (1)
+ level = 0;
+ while (tags < start)
{
- begin = byte_get (start, pointer_size);
- start += pointer_size;
- end = byte_get (start, pointer_size);
- start += pointer_size;
+ int bytes_read;
+ unsigned long abbrev_number;
+ abbrev_entry *entry;
+ abbrev_attr *attr;
- if (begin == 0 && end == 0)
- break;
+ abbrev_number = read_leb128 (tags, & bytes_read, 0);
+ tags += bytes_read;
- /* For now, skip any base address specifiers. */
- if (begin == 0xffffffff)
- continue;
+ /* A null DIE marks the end of a list of children. */
+ if (abbrev_number == 0)
+ {
+ --level;
+ continue;
+ }
- begin += addr;
- end += addr;
+ /* Scan through the abbreviation list until we reach the
+ correct entry. */
+ for (entry = first_abbrev;
+ entry && entry->entry != abbrev_number;
+ entry = entry->next)
+ continue;
- length = byte_get (start, 2);
- start += 2;
+ if (entry == NULL)
+ {
+ warn (_("Unable to locate entry %lu in the abbreviation table\n"),
+ abbrev_number);
+ return 0;
+ }
- printf (" %8.8lx %8.8lx %8.8lx (", offset, begin, end);
- decode_location_expression (start, pointer_size, length);
- printf (")\n");
+ 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,
+ &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 ();
- start += length;
- }
printf ("\n");
}
+
return 1;
}
-static const char *debug_str_contents;
-static bfd_vma debug_str_size;
+/* 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 void
-load_debug_str (FILE *file)
+static unsigned int
+get_pointer_size_and_offset_of_comp_unit (unsigned int comp_unit,
+ const char * section_name,
+ unsigned long * offset_return)
{
- Elf_Internal_Shdr *sec;
+ unsigned long offset = 0;
- /* If it is already loaded, do nothing. */
- if (debug_str_contents != NULL)
- return;
+ if (num_debug_info_entries == 0)
+ error (_("%s section needs a populated .debug_info section\n"),
+ section_name);
- /* Locate the .debug_str section. */
- sec = find_section (".debug_str");
- if (sec == NULL)
- return;
+ 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;
+ }
- debug_str_size = sec->sh_size;
+ if (offset_return != NULL)
+ * offset_return = offset;
- debug_str_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size,
- _("debug_str section data"));
+ return last_pointer_size;
}
-static void
-free_debug_str (void)
+/* 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)
{
- if (debug_str_contents == NULL)
- return;
+ Elf_Internal_Shdr * section;
+ unsigned char * start;
+ int ret;
- free ((char *) debug_str_contents);
- debug_str_contents = NULL;
- debug_str_size = 0;
-}
+ /* 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;
-static const char *
-fetch_indirect_string (unsigned long offset)
-{
- if (debug_str_contents == NULL)
- return _("<no .debug_str section>");
+ /* If we already have the information there is nothing else to do. */
+ if (num_debug_info_entries > 0)
+ return num_debug_info_entries;
- if (offset > debug_str_size)
- return _("<offset is too big>");
+ section = find_section (".debug_info");
+ if (section == NULL)
+ return 0;
- return debug_str_contents + offset;
+ 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_str (Elf_Internal_Shdr *section,
- unsigned char *start,
- FILE *file ATTRIBUTE_UNUSED)
+display_debug_lines (Elf_Internal_Shdr *section,
+ unsigned char *start, FILE *file)
{
- unsigned long bytes;
- bfd_vma addr;
+ unsigned char *data = start;
+ unsigned char *end = start + section->sh_size;
+ unsigned int comp_unit = 0;
- addr = section->sh_addr;
- bytes = section->sh_size;
+ printf (_("\nDump of debug contents of section %s:\n\n"),
+ SECTION_NAME (section));
- if (bytes == 0)
+ get_debug_info (file);
+
+ while (data < end)
{
- printf (_("\nThe .debug_str section is empty.\n"));
- return 0;
- }
+ 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++;
- printf (_("Contents of the .debug_str section:\n\n"));
+ /* Sign extend the line base field. */
+ info.li_line_base <<= 24;
+ info.li_line_base >>= 24;
- while (bytes)
- {
- int j;
- int k;
- int lbytes;
+ /* 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 ++;
- lbytes = (bytes > 16 ? 16 : bytes);
+ 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);
- printf (" 0x%8.8lx ", (unsigned long) addr);
+ end_of_sequence = data + info.li_length + initial_length_size;
- for (j = 0; j < 16; j++)
- {
- if (j < lbytes)
- printf ("%2.2x", start[j]);
- else
- printf (" ");
+ reset_state_machine (info.li_default_is_stmt);
- if ((j & 3) == 3)
- printf (" ");
- }
+ /* Display the contents of the Opcodes table. */
+ standard_opcodes = hdrptr;
- for (j = 0; j < lbytes; j++)
- {
- k = start[j];
- if (k >= ' ' && k < 0x80)
- printf ("%c", k);
- else
- printf (".");
- }
+ printf (_("\n Opcodes:\n"));
- putchar ('\n');
+ for (i = 1; i < info.li_opcode_base; i++)
+ printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]);
- start += lbytes;
- addr += lbytes;
- bytes -= lbytes;
- }
+ /* Display the contents of the Directory table. */
+ data = standard_opcodes + info.li_opcode_base - 1;
- return 1;
-}
+ if (*data == 0)
+ printf (_("\n The Directory Table is empty.\n"));
+ else
+ {
+ printf (_("\n The Directory Table:\n"));
-static const char * debug_range_contents;
-static unsigned long debug_range_size;
+ while (*data != 0)
+ {
+ printf (_(" %s\n"), data);
-static void
-load_debug_range (FILE *file)
-{
- Elf_Internal_Shdr *sec;
+ data += strlen ((char *) data) + 1;
+ }
+ }
- /* If it is already loaded, do nothing. */
- if (debug_range_contents != NULL)
- return;
+ /* Skip the NUL at the end of the table. */
+ data++;
- /* Locate the .debug_str section. */
- sec = find_section (".debug_ranges");
- if (sec == NULL)
- return;
+ /* 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"));
- debug_range_size = sec->sh_size;
+ while (*data != 0)
+ {
+ unsigned char *name;
+ int bytes_read;
- debug_range_contents = get_data (NULL, file, sec->sh_offset, sec->sh_size,
- _("debug_range section data"));
-}
+ printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
+ name = data;
-static void
-free_debug_range (void)
-{
- if (debug_range_contents == NULL)
- return;
+ data += strlen ((char *) data) + 1;
- free ((char *) debug_range_contents);
- debug_range_contents = NULL;
- debug_range_size = 0;
-}
+ 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++;
-/* Decode a DW_AT_ranges attribute for 64bit DWARF3 . */
+ /* Now display the statements. */
+ printf (_("\n Line Number Statements:\n"));
-static void
-decode_64bit_range (unsigned long offset, bfd_vma base_address)
-{
- const char * start = debug_range_contents + offset;
- const char * end = debug_range_contents + debug_range_size;
+ while (data < end_of_sequence)
+ {
+ unsigned char op_code;
+ int adv;
+ int bytes_read;
- do
- {
- bfd_vma a;
- bfd_vma b;
+ op_code = *data++;
- a = byte_get ((unsigned char *) start, 8);
- b = byte_get ((unsigned char *) start + 8, 8);
+ 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;
- if (a == 0xffffffff)
- {
- base_address = b;
- }
- else if (a == 0 && b == 0)
- break;
- else if (a > b)
- printf (_(" [corrupt: start > end]"));
- else
- {
- printf (" ");
- print_vma (base_address + a, PREFIX_HEX);
- printf (" - ");
- print_vma (base_address + b, PREFIX_HEX);
- printf (", ");
- }
+ case DW_LNS_copy:
+ printf (_(" Copy\n"));
+ break;
- start += 16;
- }
- while (start < end);
-}
+ 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;
-/* Decode a DW_AT_ranges attribute. */
+ 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;
-static void
-decode_range (unsigned long offset, bfd_vma base_address)
-{
- const char * start;
- const char * end;
+ 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;
- if (offset >= (debug_range_size - 8))
- {
- printf (_("[corrupt: offset is outside the .debug_ranges section]"));
- return;
- }
+ 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;
- /* Since all entries in the .debug_ranges section are pairs of either
- 4-byte integers (32-bit DWARF3) or 8-byte integers (64-bit DWARF3)
- the offset should always be a multiple of 8 bytes. */
- if (offset % 8)
- {
- printf (_("[corrupt: offset is not a multiple of 8]"));
- return;
- }
+ 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;
- start = debug_range_contents + offset;
+ case DW_LNS_set_basic_block:
+ printf (_(" Set basic block\n"));
+ state_machine_regs.basic_block = 1;
+ break;
- if (offset > 0
- /* Be paranoid - check to see if the previous
- two words were and end-of-range marker. */
- && (byte_get ((unsigned char *) start - 4, 4) != 0
- || byte_get ((unsigned char *) start - 8, 4) != 0))
- {
- printf (_("[corrupt: offset is not at the start of a range]"));
- return;
- }
+ 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;
- end = debug_range_contents + debug_range_size;
+ 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;
- printf ("(");
- do
- {
- unsigned long a;
- unsigned long b;
+ case DW_LNS_set_prologue_end:
+ printf (_(" Set prologue_end to true\n"));
+ break;
- a = byte_get ((unsigned char *) start, 4);
- b = byte_get ((unsigned char *) start + 4, 4);
+ case DW_LNS_set_epilogue_begin:
+ printf (_(" Set epilogue_begin to true\n"));
+ break;
- if (a == 0xffffffff)
- {
- if (b == 0xffffffff)
- {
- decode_64bit_range (offset, base_address);
- return;
- }
+ case DW_LNS_set_isa:
+ adv = read_leb128 (data, & bytes_read, 0);
+ data += bytes_read;
+ printf (_(" Set ISA to %d\n"), adv);
+ break;
- base_address = b;
- }
- else if (a == 0 && b == 0)
- break;
- else if (a > b)
- printf (_("[corrupt: start > end]"));
- else
- {
- if (start > debug_range_contents + offset)
- printf (", ");
+ default:
+ printf (_(" Unknown opcode %d with operands: "), op_code);
- printf (_("0x%lx - 0x%lx"),
- (unsigned long) base_address + a,
- (unsigned long) base_address + b);
+ 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;
+ }
}
-
- start += 8;
+ putchar ('\n');
}
- while (start < end);
- printf (")");
-}
+ return 1;
+}
-static unsigned char *
-read_and_display_attr_value (unsigned long attribute,
- unsigned long form,
- unsigned char *data,
- unsigned long cu_offset,
- unsigned long pointer_size,
- unsigned long offset_size,
- int dwarf_version)
+static int
+display_debug_pubnames (Elf_Internal_Shdr *section,
+ unsigned char *start,
+ FILE *file ATTRIBUTE_UNUSED)
{
- static unsigned long saved_DW_AT_low_pc = 0;
- unsigned long uvalue = 0;
- unsigned char *block_start = NULL;
- int bytes_read;
+ DWARF2_Internal_PubNames pubnames;
+ unsigned char *end;
- switch (form)
+ end = start + section->sh_size;
+
+ printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section));
+
+ while (start < end)
{
- default:
- break;
+ unsigned char *data;
+ unsigned long offset;
+ int offset_size, initial_length_size;
- case DW_FORM_ref_addr:
- if (dwarf_version == 2)
- {
- uvalue = byte_get (data, pointer_size);
- data += pointer_size;
- }
- else if (dwarf_version == 3)
+ data = start;
+
+ pubnames.pn_length = byte_get (data, 4);
+ data += 4;
+ if (pubnames.pn_length == 0xffffffff)
{
- uvalue = byte_get (data, offset_size);
- data += offset_size;
+ pubnames.pn_length = byte_get (data, 8);
+ data += 8;
+ offset_size = 8;
+ initial_length_size = 12;
}
else
{
- error (_("Internal error: DWARF version is not 2 or 3.\n"));
+ offset_size = 4;
+ initial_length_size = 4;
}
- break;
-
- case DW_FORM_addr:
- uvalue = byte_get (data, pointer_size);
- data += pointer_size;
- break;
-
- case DW_FORM_strp:
- uvalue = byte_get (data, offset_size);
- data += offset_size;
- break;
-
- case DW_FORM_ref1:
- case DW_FORM_flag:
- case DW_FORM_data1:
- uvalue = byte_get (data++, 1);
- break;
- case DW_FORM_ref2:
- case DW_FORM_data2:
- uvalue = byte_get (data, 2);
+ pubnames.pn_version = byte_get (data, 2);
data += 2;
- break;
-
- case DW_FORM_ref4:
- case DW_FORM_data4:
- uvalue = byte_get (data, 4);
- data += 4;
- break;
-
- case DW_FORM_sdata:
- uvalue = read_leb128 (data, & bytes_read, 1);
- data += bytes_read;
- break;
-
- case DW_FORM_ref_udata:
- case DW_FORM_udata:
- uvalue = read_leb128 (data, & bytes_read, 0);
- data += bytes_read;
- break;
-
- 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);
- }
-
- switch (form)
- {
- case DW_FORM_ref_addr:
- 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);
- break;
-
- case DW_FORM_addr:
- 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);
- 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));
- data += 8;
- break;
+ pubnames.pn_offset = byte_get (data, offset_size);
+ data += offset_size;
+ pubnames.pn_size = byte_get (data, offset_size);
+ data += offset_size;
- case DW_FORM_string:
- printf (" %s", data);
- data += strlen ((char *) data) + 1;
- break;
+ start += pubnames.pn_length + initial_length_size;
- case DW_FORM_block:
- uvalue = read_leb128 (data, & bytes_read, 0);
- block_start = data + bytes_read;
- data = display_block (block_start, uvalue);
- break;
+ if (pubnames.pn_version != 2 && pubnames.pn_version != 3)
+ {
+ static int warned = 0;
- case DW_FORM_block1:
- uvalue = byte_get (data, 1);
- block_start = data + 1;
- data = display_block (block_start, uvalue);
- break;
+ if (! warned)
+ {
+ warn (_("Only DWARF 2 and 3 pubnames are currently supported\n"));
+ warned = 1;
+ }
- case DW_FORM_block2:
- uvalue = byte_get (data, 2);
- block_start = data + 2;
- data = display_block (block_start, uvalue);
- break;
+ continue;
+ }
- case DW_FORM_block4:
- uvalue = byte_get (data, 4);
- block_start = data + 4;
- data = display_block (block_start, uvalue);
- break;
+ 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);
- case DW_FORM_strp:
- printf (_(" (indirect string, offset: 0x%lx): %s"),
- uvalue, fetch_indirect_string (uvalue));
- break;
+ printf (_("\n Offset\tName\n"));
- case DW_FORM_indirect:
- /* Handled above. */
- break;
+ do
+ {
+ offset = byte_get (data, offset_size);
- default:
- warn (_("Unrecognized form: %d\n"), form);
- break;
+ if (offset != 0)
+ {
+ data += offset_size;
+ printf (" %-6ld\t\t%s\n", offset, data);
+ data += strlen ((char *) data) + 1;
+ }
+ }
+ while (offset != 0);
}
- /* For some attributes we can display further information. */
+ 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 ("\t");
+ printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section));
- switch (attribute)
+ while (curr < end)
{
- case DW_AT_inline:
- switch (uvalue)
+ unsigned int lineno;
+ const char *string;
+
+ op = *curr;
+ curr++;
+
+ switch (op)
{
- case DW_INL_not_inlined:
- printf (_("(not inlined)"));
- break;
- case DW_INL_inlined:
- printf (_("(inlined)"));
- break;
- case DW_INL_declared_not_inlined:
- printf (_("(declared as inline but ignored)"));
- break;
- case DW_INL_declared_inlined:
- printf (_("(declared as inline and inlined)"));
+ 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;
- default:
- printf (_(" (Unknown inline attribute value: %lx)"), uvalue);
+
+ case DW_MACINFO_end_file:
+ printf (_(" DW_MACINFO_end_file\n"));
break;
- }
- break;
- case DW_AT_language:
- switch (uvalue)
- {
- case DW_LANG_C: printf ("(non-ANSI C)"); break;
- case DW_LANG_C89: printf ("(ANSI C)"); break;
- case DW_LANG_C_plus_plus: printf ("(C++)"); break;
- case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break;
- case DW_LANG_Fortran90: printf ("(Fortran 90)"); break;
- case DW_LANG_Modula2: printf ("(Modula 2)"); break;
- case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break;
- case DW_LANG_Ada83: printf ("(Ada)"); break;
- case DW_LANG_Cobol74: printf ("(Cobol 74)"); break;
- case DW_LANG_Cobol85: printf ("(Cobol 85)"); break;
- /* DWARF 2.1 values. */
- case DW_LANG_C99: printf ("(ANSI C99)"); break;
- case DW_LANG_Ada95: printf ("(ADA 95)"); break;
- case DW_LANG_Fortran95: printf ("(Fortran 95)"); break;
- /* MIPS extension. */
- case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break;
- /* UPC extension. */
- case DW_LANG_Upc: printf ("(Unified Parallel C)"); break;
- default:
- printf ("(Unknown: %lx)", uvalue);
+ 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;
- }
- break;
- case DW_AT_encoding:
- switch (uvalue)
- {
- case DW_ATE_void: printf ("(void)"); break;
- case DW_ATE_address: printf ("(machine address)"); break;
- case DW_ATE_boolean: printf ("(boolean)"); break;
- case DW_ATE_complex_float: printf ("(complex float)"); break;
- case DW_ATE_float: printf ("(float)"); break;
- case DW_ATE_signed: printf ("(signed)"); break;
- case DW_ATE_signed_char: printf ("(signed char)"); break;
- case DW_ATE_unsigned: printf ("(unsigned)"); break;
- case DW_ATE_unsigned_char: printf ("(unsigned char)"); break;
- /* DWARF 2.1 value. */
- case DW_ATE_imaginary_float: printf ("(imaginary float)"); break;
- default:
- if (uvalue >= DW_ATE_lo_user
- && uvalue <= DW_ATE_hi_user)
- printf ("(user defined type)");
- else
- printf ("(unknown type)");
+ 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;
- }
- break;
- case DW_AT_accessibility:
- switch (uvalue)
- {
- case DW_ACCESS_public: printf ("(public)"); break;
- case DW_ACCESS_protected: printf ("(protected)"); break;
- case DW_ACCESS_private: printf ("(private)"); break;
- default:
- printf ("(unknown accessibility)");
+ 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;
}
- break;
+ }
- case DW_AT_visibility:
- switch (uvalue)
- {
- case DW_VIS_local: printf ("(local)"); break;
- case DW_VIS_exported: printf ("(exported)"); break;
- case DW_VIS_qualified: printf ("(qualified)"); break;
- default: printf ("(unknown visibility)"); break;
- }
- break;
+ return 1;
+}
- case DW_AT_virtuality:
- switch (uvalue)
- {
- case DW_VIRTUALITY_none: printf ("(none)"); break;
- case DW_VIRTUALITY_virtual: printf ("(virtual)"); break;
- case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break;
- default: printf ("(unknown virtuality)"); break;
- }
- break;
- case DW_AT_identifier_case:
- switch (uvalue)
- {
- case DW_ID_case_sensitive: printf ("(case_sensitive)"); break;
- case DW_ID_up_case: printf ("(up_case)"); break;
- case DW_ID_down_case: printf ("(down_case)"); break;
- case DW_ID_case_insensitive: printf ("(case_insensitive)"); break;
- default: printf ("(unknown case)"); break;
- }
- break;
+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;
- case DW_AT_calling_convention:
- switch (uvalue)
- {
- case DW_CC_normal: printf ("(normal)"); break;
- case DW_CC_program: printf ("(program)"); break;
- case DW_CC_nocall: printf ("(nocall)"); break;
- default:
- if (uvalue >= DW_CC_lo_user
- && uvalue <= DW_CC_hi_user)
- printf ("(user defined)");
- else
- printf ("(unknown convention)");
- }
- break;
+ printf (_("Contents of the %s section:\n\n"), SECTION_NAME (section));
- case DW_AT_ordering:
- switch (uvalue)
- {
- case -1: printf ("(undefined)"); break;
- case 0: printf ("(row major)"); break;
- case 1: printf ("(column major)"); break;
- }
- break;
+ do
+ {
+ start = process_abbrev_section (start, end);
- 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 (block_start)
- {
- printf ("(");
- decode_location_expression (block_start, pointer_size, uvalue);
- printf (")");
- }
- else if (form == DW_FORM_data4 || form == DW_FORM_data8)
- printf (_("(location list)"));
+ if (first_abbrev == NULL)
+ continue;
- break;
+ printf (_(" Number TAG\n"));
- case DW_AT_low_pc:
- /* This is a hack. We keep track of the DW_AT_low_pc attributes
- and use them when decoding DW_AT_ranges attributes. The
- assumption here is that we are decoding the attributes in order
- and so the correct base address for the range is the low_pc. */
- saved_DW_AT_low_pc = uvalue;
- break;
+ for (entry = first_abbrev; entry; entry = entry->next)
+ {
+ abbrev_attr *attr;
- case DW_AT_ranges:
- decode_range (uvalue, saved_DW_AT_low_pc);
- break;
+ printf (_(" %ld %s [%s]\n"),
+ entry->entry,
+ get_TAG_name (entry->tag),
+ entry->children ? _("has children") : _("no children"));
- default:
- break;
- }
+ for (attr = entry->first_attr; attr; attr = attr->next)
+ printf (_(" %-18s %s\n"),
+ get_AT_name (attr->attribute),
+ get_FORM_name (attr->form));
+ }
- return data;
-}
+ free_abbrevs ();
+ }
+ while (start);
-static unsigned char *
-read_and_display_attr (unsigned long attribute,
- unsigned long form,
- unsigned char *data,
- unsigned long cu_offset,
- unsigned long pointer_size,
- unsigned long offset_size,
- int dwarf_version)
-{
- 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");
- return data;
-}
-/* Apply addends of RELA relocations. */
+ return 1;
+}
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)
+display_debug_loc (Elf_Internal_Shdr *section,
+ unsigned char *start, FILE *file)
{
- Elf_Internal_Shdr *relsec;
+ 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;
- if (end - start < reloc_size)
- return 1;
+ addr = section->sh_addr;
+ bytes = section->sh_size;
+ section_end = start + bytes;
- for (relsec = section_headers;
- relsec < section_headers + elf_header.e_shnum;
- ++relsec)
+ if (bytes == 0)
{
- unsigned long nrelas;
- Elf_Internal_Rela *rela, *rp;
- Elf_Internal_Shdr *symsec;
- Elf_Internal_Sym *symtab;
- Elf_Internal_Sym *sym;
+ printf (_("\nThe .debug_loc section is empty.\n"));
+ return 0;
+ }
- if (relsec->sh_type != SHT_RELA
- || SECTION_HEADER (relsec->sh_info) != section
- || relsec->sh_size == 0)
- continue;
+ get_debug_info (file);
- if (!slurp_rela_relocs (file, relsec->sh_offset, relsec->sh_size,
- &rela, &nrelas))
- return 0;
+ /* 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;
- symsec = SECTION_HEADER (relsec->sh_link);
- symtab = GET_ELF_SYMBOLS (file, symsec);
+ num = debug_information [i].num_loc_offsets;
+ num_loc_list += num;
- for (rp = rela; rp < rela + nrelas; ++rp)
+ /* Check if we can use `debug_information' directly. */
+ if (use_debug_info && num != 0)
{
- 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;
-
- if (is_32bit_elf)
+ if (!seen_first_offset)
{
- 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;
- }
+ /* This is the first location list. */
+ last_offset = debug_information [i].loc_offsets [0];
+ first = i;
+ seen_first_offset = 1;
+ j = 1;
}
else
- {
- sym = symtab + ELF64_R_SYM (rp->r_info);
+ j = 0;
- if (ELF64_R_SYM (rp->r_info) != 0
- && ELF64_ST_TYPE (sym->st_info) != STT_SECTION
- && ELF64_ST_TYPE (sym->st_info) != STT_OBJECT)
+ for (; j < num; j++)
+ {
+ if (last_offset >
+ debug_information [i].loc_offsets [j])
{
- 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;
+ use_debug_info = 0;
+ break;
}
+ last_offset = debug_information [i].loc_offsets [j];
}
-
- byte_put (loc, rp->r_addend, reloc_size);
}
-
- free (symtab);
- free (rela);
- break;
}
- 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;
+ if (!use_debug_info)
+ /* FIXME: Should we handle this case? */
+ error (_("Location lists in .debug_info section aren't in ascending order!\n"));
- printf (_("The section %s contains:\n\n"), SECTION_NAME (section));
+ if (!seen_first_offset)
+ error (_("No location lists in .debug_info section!\n"));
- load_debug_str (file);
- load_debug_loc (file);
- load_debug_range (file);
+ 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]);
- while (start < end)
+ 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++)
{
- DWARF2_Internal_CompUnit compunit;
- unsigned char *hdrptr;
- unsigned char *cu_abbrev_offset_ptr;
- unsigned char *tags;
- int level;
+ unsigned long begin;
+ unsigned long end;
+ unsigned short length;
+ unsigned long offset;
+ unsigned int pointer_size;
unsigned long cu_offset;
- int offset_size;
- int initial_length_size;
-
- hdrptr = start;
- compunit.cu_length = byte_get (hdrptr, 4);
- hdrptr += 4;
+ pointer_size = debug_information [i].pointer_size;
+ cu_offset = debug_information [i].cu_offset;
- if (compunit.cu_length == 0xffffffff)
+ for (j = 0; j < debug_information [i].num_loc_offsets; j++)
{
- compunit.cu_length = byte_get (hdrptr, 8);
- hdrptr += 8;
- offset_size = 8;
- initial_length_size = 12;
- }
- else
- {
- offset_size = 4;
- initial_length_size = 4;
- }
+ offset = debug_information [i].loc_offsets [j];
+ next = section_begin + offset;
- compunit.cu_version = byte_get (hdrptr, 2);
- hdrptr += 2;
+ 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;
- cu_offset = start - section_begin;
- start += compunit.cu_length + initial_length_size;
+ while (1)
+ {
+ begin = byte_get (start, pointer_size);
+ start += pointer_size;
+ end = byte_get (start, pointer_size);
+ start += pointer_size;
- if (elf_header.e_type == ET_REL
- && !debug_apply_rela_addends (file, section, offset_size,
- section_begin, hdrptr, start))
- return 0;
+ if (begin == 0 && end == 0)
+ break;
- cu_abbrev_offset_ptr = hdrptr;
- compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
- hdrptr += offset_size;
+ /* For now, skip any base address specifiers. */
+ if (begin == 0xffffffff)
+ continue;
- compunit.cu_pointer_size = byte_get (hdrptr, 1);
- hdrptr += 1;
+ begin += addr;
+ end += addr;
- tags = hdrptr;
+ length = byte_get (start, 2);
+ start += 2;
- 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);
+ printf (" %8.8lx %8.8lx %8.8lx (",
+ offset, begin, end);
+ decode_location_expression (start, pointer_size, length,
+ cu_offset);
+ printf (")\n");
- if (compunit.cu_version != 2 && compunit.cu_version != 3)
- {
- warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n"));
- continue;
- }
+ if (begin >= end)
+ warn ("Bad location list at %8.8lx from %8.8lx to %8.8lx\n",
+ offset, begin, end);
- free_abbrevs ();
+ start += length;
+ }
- /* Read in the abbrevs used by this compilation unit. */
- {
- Elf_Internal_Shdr *sec;
- unsigned char *begin;
+ if (j < debug_information [i].num_loc_offsets -1)
+ printf (_(" <End of list>"));
+ printf ("\n");
+ }
+ }
+ return 1;
+}
- /* Locate the .debug_abbrev section and process it. */
- sec = find_section (".debug_abbrev");
- if (sec == NULL)
- {
- warn (_("Unable to locate .debug_abbrev section!\n"));
- return 0;
- }
+static int
+display_debug_str (Elf_Internal_Shdr *section,
+ unsigned char *start,
+ FILE *file ATTRIBUTE_UNUSED)
+{
+ unsigned long bytes;
+ bfd_vma addr;
- begin = get_data (NULL, file, sec->sh_offset, sec->sh_size,
- _("debug_abbrev section data"));
- if (!begin)
- return 0;
+ addr = section->sh_addr;
+ bytes = section->sh_size;
- process_abbrev_section (begin + compunit.cu_abbrev_offset,
- begin + sec->sh_size);
+ if (bytes == 0)
+ {
+ printf (_("\nThe .debug_str section is empty.\n"));
+ return 0;
+ }
- free (begin);
- }
+ printf (_("Contents of the .debug_str section:\n\n"));
- level = 0;
- while (tags < start)
- {
- int bytes_read;
- unsigned long abbrev_number;
- abbrev_entry *entry;
- abbrev_attr *attr;
+ while (bytes)
+ {
+ int j;
+ int k;
+ int lbytes;
- abbrev_number = read_leb128 (tags, & bytes_read, 0);
- tags += bytes_read;
+ lbytes = (bytes > 16 ? 16 : bytes);
- /* A null DIE marks the end of a list of children. */
- if (abbrev_number == 0)
- {
- --level;
- continue;
- }
+ printf (" 0x%8.8lx ", (unsigned long) addr);
- /* Scan through the abbreviation list until we reach the
- correct entry. */
- for (entry = first_abbrev;
- entry && entry->entry != abbrev_number;
- entry = entry->next)
- continue;
+ for (j = 0; j < 16; j++)
+ {
+ if (j < lbytes)
+ printf ("%2.2x", start[j]);
+ else
+ printf (" ");
- if (entry == NULL)
- {
- warn (_("Unable to locate entry %lu in the abbreviation table\n"),
- abbrev_number);
- return 0;
- }
+ if ((j & 3) == 3)
+ printf (" ");
+ }
- printf (_(" <%d><%lx>: Abbrev Number: %lu (%s)\n"),
- level,
- (unsigned long) (tags - section_begin - bytes_read),
- abbrev_number,
- get_TAG_name (entry->tag));
+ for (j = 0; j < lbytes; j++)
+ {
+ k = start[j];
+ if (k >= ' ' && k < 0x80)
+ printf ("%c", k);
+ else
+ printf (".");
+ }
- 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);
+ putchar ('\n');
- if (entry->children)
- ++level;
- }
+ start += lbytes;
+ addr += lbytes;
+ bytes -= lbytes;
}
- free_debug_range ();
- free_debug_str ();
- free_debug_loc ();
+ return 1;
+}
- printf ("\n");
- 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,
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]);
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;
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;
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;
projects / binutils-gdb.git / commitdiff