diff options
Diffstat (limited to 'binutils/dwarf.c')
| -rw-r--r-- | binutils/dwarf.c | 3746 |
1 files changed, 3746 insertions, 0 deletions
diff --git a/binutils/dwarf.c b/binutils/dwarf.c new file mode 100644 index 0000000..a874d84 --- /dev/null +++ b/binutils/dwarf.c @@ -0,0 +1,3746 @@ +/* dwarf.c -- display DWARF contents of a BFD binary file + Copyright 2005 + Free Software Foundation, Inc. + + This file is part of GNU Binutils. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ + +#include <stdio.h> + +#include "dwarf.h" + +#include "bucomm.h" +#include "libiberty.h" + +static int have_frame_base; +static int need_base_address; + +static unsigned int last_pointer_size = 0; +static int warned_about_missing_comp_units = FALSE; + +static unsigned int num_debug_info_entries = 0; +static debug_info *debug_information = NULL; + +dwarf_vma eh_addr_size; +int is_relocatable; + +int do_debug_info; +int do_debug_abbrevs; +int do_debug_lines; +int do_debug_pubnames; +int do_debug_aranges; +int do_debug_ranges; +int do_debug_frames; +int do_debug_frames_interp; +int do_debug_macinfo; +int do_debug_str; +int do_debug_loc; + +dwarf_vma (*byte_get) (unsigned char *, int); + +dwarf_vma +byte_get_little_endian (unsigned char *field, int size) +{ + switch (size) + { + case 1: + return *field; + + case 2: + return ((unsigned int) (field[0])) + | (((unsigned int) (field[1])) << 8); + + case 4: + return ((unsigned long) (field[0])) + | (((unsigned long) (field[1])) << 8) + | (((unsigned long) (field[2])) << 16) + | (((unsigned long) (field[3])) << 24); + + case 8: + if (sizeof (dwarf_vma) == 8) + return ((dwarf_vma) (field[0])) + | (((dwarf_vma) (field[1])) << 8) + | (((dwarf_vma) (field[2])) << 16) + | (((dwarf_vma) (field[3])) << 24) + | (((dwarf_vma) (field[4])) << 32) + | (((dwarf_vma) (field[5])) << 40) + | (((dwarf_vma) (field[6])) << 48) + | (((dwarf_vma) (field[7])) << 56); + else if (sizeof (dwarf_vma) == 4) + /* We want to extract data from an 8 byte wide field and + place it into a 4 byte wide field. Since this is a little + endian source we can just use the 4 byte extraction code. */ + return ((unsigned long) (field[0])) + | (((unsigned long) (field[1])) << 8) + | (((unsigned long) (field[2])) << 16) + | (((unsigned long) (field[3])) << 24); + + default: + error (_("Unhandled data length: %d\n"), size); + abort (); + } +} + +dwarf_vma +byte_get_big_endian (unsigned char *field, int size) +{ + switch (size) + { + case 1: + return *field; + + case 2: + return ((unsigned int) (field[1])) | (((int) (field[0])) << 8); + + case 4: + return ((unsigned long) (field[3])) + | (((unsigned long) (field[2])) << 8) + | (((unsigned long) (field[1])) << 16) + | (((unsigned long) (field[0])) << 24); + + case 8: + if (sizeof (dwarf_vma) == 8) + return ((dwarf_vma) (field[7])) + | (((dwarf_vma) (field[6])) << 8) + | (((dwarf_vma) (field[5])) << 16) + | (((dwarf_vma) (field[4])) << 24) + | (((dwarf_vma) (field[3])) << 32) + | (((dwarf_vma) (field[2])) << 40) + | (((dwarf_vma) (field[1])) << 48) + | (((dwarf_vma) (field[0])) << 56); + else if (sizeof (dwarf_vma) == 4) + { + /* Although we are extracing data from an 8 byte wide field, + we are returning only 4 bytes of data. */ + field += 4; + return ((unsigned long) (field[3])) + | (((unsigned long) (field[2])) << 8) + | (((unsigned long) (field[1])) << 16) + | (((unsigned long) (field[0])) << 24); + } + + default: + error (_("Unhandled data length: %d\n"), size); + abort (); + } +} + +static dwarf_vma +byte_get_signed (unsigned char *field, int size) +{ + dwarf_vma x = byte_get (field, size); + + switch (size) + { + case 1: + return (x ^ 0x80) - 0x80; + case 2: + return (x ^ 0x8000) - 0x8000; + case 4: + return (x ^ 0x80000000) - 0x80000000; + case 8: + return x; + default: + abort (); + } +} + +static unsigned long int +read_leb128 (unsigned char *data, unsigned int *length_return, int sign) +{ + unsigned long int result = 0; + unsigned int num_read = 0; + unsigned int shift = 0; + unsigned char byte; + + do + { + byte = *data++; + num_read++; + + result |= ((unsigned long int) (byte & 0x7f)) << shift; + + shift += 7; + + } + while (byte & 0x80); + + if (length_return != NULL) + *length_return = num_read; + + if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) + result |= -1L << shift; + + return result; +} + +typedef struct State_Machine_Registers +{ + unsigned long address; + unsigned int file; + unsigned int line; + unsigned int column; + int is_stmt; + int basic_block; + int end_sequence; +/* This variable hold the number of the last entry seen + in the File Table. */ + unsigned int last_file_entry; +} SMR; + +static SMR state_machine_regs; + +static void +reset_state_machine (int is_stmt) +{ + state_machine_regs.address = 0; + state_machine_regs.file = 1; + state_machine_regs.line = 1; + state_machine_regs.column = 0; + state_machine_regs.is_stmt = is_stmt; + state_machine_regs.basic_block = 0; + state_machine_regs.end_sequence = 0; + state_machine_regs.last_file_entry = 0; +} + +/* Handled an extend line op. + Returns the number of bytes read. */ + +static int +process_extended_line_op (unsigned char *data, int is_stmt, int pointer_size) +{ + unsigned char op_code; + unsigned int bytes_read; + unsigned int len; + unsigned char *name; + unsigned long adr; + + len = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + + if (len == 0) + { + warn (_("badly formed extended line op encountered!\n")); + return bytes_read; + } + + len += bytes_read; + op_code = *data++; + + printf (_(" Extended opcode %d: "), op_code); + + switch (op_code) + { + case DW_LNE_end_sequence: + printf (_("End of Sequence\n\n")); + reset_state_machine (is_stmt); + break; + + case DW_LNE_set_address: + adr = byte_get (data, pointer_size); + printf (_("set Address to 0x%lx\n"), adr); + state_machine_regs.address = adr; + break; + + case DW_LNE_define_file: + printf (_(" define new File Table entry\n")); + printf (_(" Entry\tDir\tTime\tSize\tName\n")); + + printf (_(" %d\t"), ++state_machine_regs.last_file_entry); + name = data; + data += strlen ((char *) data) + 1; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + printf (_("%s\n\n"), name); + break; + + default: + printf (_("UNKNOWN: length %d\n"), len - bytes_read); + break; + } + + return len; +} + +static const char * +fetch_indirect_string (unsigned long offset) +{ + struct dwarf_section *section = &debug_displays [str].section; + + if (section->start == NULL) + return _("<no .debug_str section>"); + + if (offset > section->size) + { + warn (_("DW_FORM_strp offset too big: %lx\n"), offset); + return _("<offset is too big>"); + } + + return (const char *) section->start + offset; +} + +/* 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; + +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; + + if (first_abbrev == NULL) + first_abbrev = entry; + else + last_abbrev->next = entry; + + last_abbrev = entry; +} + +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) + { + unsigned 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 char * +get_TAG_name (unsigned long tag) +{ + switch (tag) + { + case DW_TAG_padding: return "DW_TAG_padding"; + case DW_TAG_array_type: return "DW_TAG_array_type"; + case DW_TAG_class_type: return "DW_TAG_class_type"; + case DW_TAG_entry_point: return "DW_TAG_entry_point"; + case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type"; + case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter"; + case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration"; + case DW_TAG_label: return "DW_TAG_label"; + case DW_TAG_lexical_block: return "DW_TAG_lexical_block"; + case DW_TAG_member: return "DW_TAG_member"; + case DW_TAG_pointer_type: return "DW_TAG_pointer_type"; + case DW_TAG_reference_type: return "DW_TAG_reference_type"; + case DW_TAG_compile_unit: return "DW_TAG_compile_unit"; + case DW_TAG_string_type: return "DW_TAG_string_type"; + case DW_TAG_structure_type: return "DW_TAG_structure_type"; + case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type"; + case DW_TAG_typedef: return "DW_TAG_typedef"; + case DW_TAG_union_type: return "DW_TAG_union_type"; + case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters"; + case DW_TAG_variant: return "DW_TAG_variant"; + case DW_TAG_common_block: return "DW_TAG_common_block"; + case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion"; + case DW_TAG_inheritance: return "DW_TAG_inheritance"; + case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine"; + case DW_TAG_module: return "DW_TAG_module"; + case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type"; + case DW_TAG_set_type: return "DW_TAG_set_type"; + case DW_TAG_subrange_type: return "DW_TAG_subrange_type"; + case DW_TAG_with_stmt: return "DW_TAG_with_stmt"; + case DW_TAG_access_declaration: return "DW_TAG_access_declaration"; + case DW_TAG_base_type: return "DW_TAG_base_type"; + case DW_TAG_catch_block: return "DW_TAG_catch_block"; + case DW_TAG_const_type: return "DW_TAG_const_type"; + case DW_TAG_constant: return "DW_TAG_constant"; + case DW_TAG_enumerator: return "DW_TAG_enumerator"; + case DW_TAG_file_type: return "DW_TAG_file_type"; + case DW_TAG_friend: return "DW_TAG_friend"; + case DW_TAG_namelist: return "DW_TAG_namelist"; + case DW_TAG_namelist_item: return "DW_TAG_namelist_item"; + case DW_TAG_packed_type: return "DW_TAG_packed_type"; + case DW_TAG_subprogram: return "DW_TAG_subprogram"; + case DW_TAG_template_type_param: return "DW_TAG_template_type_param"; + case DW_TAG_template_value_param: return "DW_TAG_template_value_param"; + case DW_TAG_thrown_type: return "DW_TAG_thrown_type"; + case DW_TAG_try_block: return "DW_TAG_try_block"; + case DW_TAG_variant_part: return "DW_TAG_variant_part"; + case DW_TAG_variable: return "DW_TAG_variable"; + case DW_TAG_volatile_type: return "DW_TAG_volatile_type"; + case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop"; + case DW_TAG_format_label: return "DW_TAG_format_label"; + case DW_TAG_function_template: return "DW_TAG_function_template"; + case DW_TAG_class_template: return "DW_TAG_class_template"; + /* DWARF 2.1 values. */ + case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure"; + case DW_TAG_restrict_type: return "DW_TAG_restrict_type"; + case DW_TAG_interface_type: return "DW_TAG_interface_type"; + case DW_TAG_namespace: return "DW_TAG_namespace"; + case DW_TAG_imported_module: return "DW_TAG_imported_module"; + case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type"; + case DW_TAG_partial_unit: return "DW_TAG_partial_unit"; + case DW_TAG_imported_unit: return "DW_TAG_imported_unit"; + /* UPC values. */ + case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type"; + case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type"; + case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type"; + default: + { + static char buffer[100]; + + snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag); + return buffer; + } + } +} + +static char * +get_FORM_name (unsigned long form) +{ + switch (form) + { + case DW_FORM_addr: return "DW_FORM_addr"; + case DW_FORM_block2: return "DW_FORM_block2"; + case DW_FORM_block4: return "DW_FORM_block4"; + case DW_FORM_data2: return "DW_FORM_data2"; + case DW_FORM_data4: return "DW_FORM_data4"; + case DW_FORM_data8: return "DW_FORM_data8"; + case DW_FORM_string: return "DW_FORM_string"; + case DW_FORM_block: return "DW_FORM_block"; + case DW_FORM_block1: return "DW_FORM_block1"; + case DW_FORM_data1: return "DW_FORM_data1"; + case DW_FORM_flag: return "DW_FORM_flag"; + case DW_FORM_sdata: return "DW_FORM_sdata"; + case DW_FORM_strp: return "DW_FORM_strp"; + case DW_FORM_udata: return "DW_FORM_udata"; + case DW_FORM_ref_addr: return "DW_FORM_ref_addr"; + case DW_FORM_ref1: return "DW_FORM_ref1"; + case DW_FORM_ref2: return "DW_FORM_ref2"; + case DW_FORM_ref4: return "DW_FORM_ref4"; + case DW_FORM_ref8: return "DW_FORM_ref8"; + case DW_FORM_ref_udata: return "DW_FORM_ref_udata"; + case DW_FORM_indirect: return "DW_FORM_indirect"; + default: + { + static char buffer[100]; + + snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); + return buffer; + } + } +} + +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 int +decode_location_expression (unsigned char * data, + unsigned int pointer_size, + unsigned long length, + unsigned long cu_offset) +{ + unsigned op; + unsigned int bytes_read; + unsigned long uvalue; + unsigned char *end = data + length; + int need_frame_base = 0; + + 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; + break; + case DW_OP_const2s: + printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2)); + data += 2; + break; + case DW_OP_const4u: + printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4)); + data += 4; + break; + case DW_OP_const4s: + printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4)); + data += 4; + break; + case DW_OP_const8u: + printf ("DW_OP_const8u: %lu %lu", (unsigned long) byte_get (data, 4), + (unsigned long) byte_get (data + 4, 4)); + data += 8; + break; + case DW_OP_const8s: + printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4), + (long) byte_get (data + 4, 4)); + data += 8; + break; + case DW_OP_constu: + printf ("DW_OP_constu: %lu", read_leb128 (data, &bytes_read, 0)); + data += bytes_read; + break; + case DW_OP_consts: + printf ("DW_OP_consts: %ld", read_leb128 (data, &bytes_read, 1)); + data += bytes_read; + break; + case DW_OP_dup: + printf ("DW_OP_dup"); + break; + case DW_OP_drop: + printf ("DW_OP_drop"); + break; + case DW_OP_over: + printf ("DW_OP_over"); + break; + case DW_OP_pick: + printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1)); + break; + case DW_OP_swap: + printf ("DW_OP_swap"); + break; + case DW_OP_rot: + printf ("DW_OP_rot"); + break; + case DW_OP_xderef: + printf ("DW_OP_xderef"); + break; + case DW_OP_abs: + printf ("DW_OP_abs"); + break; + case DW_OP_and: + printf ("DW_OP_and"); + break; + case DW_OP_div: + printf ("DW_OP_div"); + break; + case DW_OP_minus: + printf ("DW_OP_minus"); + break; + case DW_OP_mod: + printf ("DW_OP_mod"); + break; + case DW_OP_mul: + printf ("DW_OP_mul"); + break; + case DW_OP_neg: + printf ("DW_OP_neg"); + break; + case DW_OP_not: + printf ("DW_OP_not"); + break; + case DW_OP_or: + printf ("DW_OP_or"); + break; + case DW_OP_plus: + printf ("DW_OP_plus"); + break; + case DW_OP_plus_uconst: + printf ("DW_OP_plus_uconst: %lu", + read_leb128 (data, &bytes_read, 0)); + data += bytes_read; + break; + case DW_OP_shl: + printf ("DW_OP_shl"); + break; + case DW_OP_shr: + printf ("DW_OP_shr"); + break; + case DW_OP_shra: + printf ("DW_OP_shra"); + break; + case DW_OP_xor: + printf ("DW_OP_xor"); + break; + case DW_OP_bra: + printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2)); + data += 2; + break; + case DW_OP_eq: + printf ("DW_OP_eq"); + break; + case DW_OP_ge: + printf ("DW_OP_ge"); + break; + case DW_OP_gt: + printf ("DW_OP_gt"); + break; + case DW_OP_le: + printf ("DW_OP_le"); + break; + case DW_OP_lt: + printf ("DW_OP_lt"); + break; + case DW_OP_ne: + printf ("DW_OP_ne"); + break; + case DW_OP_skip: + printf ("DW_OP_skip: %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_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: + need_frame_base = 1; + 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 need_frame_base; + } + + /* Separate the ops. */ + if (data < end) + printf ("; "); + } + + return need_frame_base; +} + +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) +{ + unsigned long uvalue = 0; + unsigned char *block_start = NULL; + unsigned 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 || do_debug_ranges) + && 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: %lu\n"), form); + break; + } + + /* For some attributes we can display further information. */ + if ((do_loc || do_debug_loc || do_debug_ranges) + && num_debug_info_entries == 0) + { + switch (attribute) + { + case DW_AT_frame_base: + have_frame_base = 1; + 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 + = xcrealloc (debug_info_p->loc_offsets, + max, sizeof (*debug_info_p->loc_offsets)); + debug_info_p->have_frame_base + = xcrealloc (debug_info_p->have_frame_base, + max, sizeof (*debug_info_p->have_frame_base)); + debug_info_p->max_loc_offsets = max; + } + debug_info_p->loc_offsets [num] = uvalue; + debug_info_p->have_frame_base [num] = have_frame_base; + debug_info_p->num_loc_offsets++; + } + break; + + case DW_AT_low_pc: + if (need_base_address) + debug_info_p->base_address = uvalue; + break; + + case DW_AT_ranges: + if (form == DW_FORM_data4 || form == DW_FORM_data8) + { + /* Process range list. */ + unsigned int max = debug_info_p->max_range_lists; + unsigned int num = debug_info_p->num_range_lists; + + if (max == 0 || num >= max) + { + max += 1024; + debug_info_p->range_lists + = xcrealloc (debug_info_p->range_lists, + max, sizeof (*debug_info_p->range_lists)); + debug_info_p->max_range_lists = max; + } + debug_info_p->range_lists [num] = uvalue; + debug_info_p->num_range_lists++; + } + 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; + case DW_ATE_decimal_float: printf ("(decimal 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: + have_frame_base = 1; + 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) + { + int need_frame_base; + + printf ("("); + need_frame_base = decode_location_expression (block_start, + pointer_size, + uvalue, + cu_offset); + printf (")"); + if (need_frame_base && !have_frame_base) + printf (_(" [without DW_AT_frame_base]")); + } + else if (form == DW_FORM_data4 || form == DW_FORM_data8) + printf (_("(location list)")); + + 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]; + + snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), + attribute); + return buffer; + } + } +} + +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; +} + + +/* Process the contents of a .debug_info section. If do_loc is non-zero + then we are scanning for location lists and we do not want to display + anything to the user. */ + +static int +process_debug_info (struct dwarf_section *section, void *file, + int do_loc) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; + unsigned char *section_begin; + unsigned int unit; + unsigned int num_units = 0; + + if ((do_loc || do_debug_loc || do_debug_ranges) + && num_debug_info_entries == 0) + { + unsigned long length; + + /* 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 + section_begin += length + 4; + } + + if (num_units == 0) + { + error (_("No comp units in %s section ?"), section->name); + return 0; + } + + /* Then allocate an array to hold the information. */ + debug_information = cmalloc (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; + } + } + + if (!do_loc) + { + printf (_("The section %s contains:\n\n"), section->name); + + load_debug_section (str, file); + } + + load_debug_section (abbrev, file); + if (debug_displays [abbrev].section.start == NULL) + { + warn (_("Unable to locate %s section!\n"), + debug_displays [abbrev].section.name); + return 0; + } + + 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; + + hdrptr = start; + + compunit.cu_length = byte_get (hdrptr, 4); + hdrptr += 4; + + 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; + } + + compunit.cu_version = byte_get (hdrptr, 2); + hdrptr += 2; + + cu_offset = start - section_begin; + start += compunit.cu_length + initial_length_size; + + cu_abbrev_offset_ptr = hdrptr; + compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size); + hdrptr += offset_size; + + compunit.cu_pointer_size = byte_get (hdrptr, 1); + hdrptr += 1; + if ((do_loc || do_debug_loc || do_debug_ranges) + && num_debug_info_entries == 0) + { + debug_information [unit].cu_offset = cu_offset; + debug_information [unit].pointer_size + = compunit.cu_pointer_size; + debug_information [unit].base_address = 0; + debug_information [unit].loc_offsets = NULL; + debug_information [unit].have_frame_base = NULL; + debug_information [unit].max_loc_offsets = 0; + debug_information [unit].num_loc_offsets = 0; + debug_information [unit].range_lists = NULL; + debug_information [unit].max_range_lists= 0; + debug_information [unit].num_range_lists = 0; + } + + tags = hdrptr; + + if (!do_loc) + { + printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset); + printf (_(" Length: %ld\n"), compunit.cu_length); + printf (_(" Version: %d\n"), compunit.cu_version); + printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset); + printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); + } + + if (compunit.cu_version != 2 && compunit.cu_version != 3) + { + warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n")); + continue; + } + + free_abbrevs (); + + /* Process the abbrevs used by this compilation unit. */ + process_abbrev_section + ((unsigned char *) debug_displays [abbrev].section.start + + compunit.cu_abbrev_offset, + (unsigned char *) debug_displays [abbrev].section.start + + debug_displays [abbrev].section.size); + + level = 0; + while (tags < start) + { + unsigned int bytes_read; + unsigned long abbrev_number; + abbrev_entry *entry; + abbrev_attr *attr; + + abbrev_number = read_leb128 (tags, & bytes_read, 0); + tags += bytes_read; + + /* A null DIE marks the end of a list of children. */ + if (abbrev_number == 0) + { + --level; + continue; + } + + /* Scan through the abbreviation list until we reach the + correct entry. */ + for (entry = first_abbrev; + entry && entry->entry != abbrev_number; + entry = entry->next) + continue; + + if (entry == NULL) + { + warn (_("Unable to locate entry %lu in the abbreviation table\n"), + abbrev_number); + return 0; + } + + 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)); + + switch (entry->tag) + { + default: + need_base_address = 0; + break; + case DW_TAG_compile_unit: + need_base_address = 1; + break; + case DW_TAG_entry_point: + case DW_TAG_inlined_subroutine: + case DW_TAG_subprogram: + need_base_address = 0; + /* Assuming that there is no DW_AT_frame_base. */ + have_frame_base = 0; + break; + } + + 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 process .debug_loc and .debug_ranges sections. */ + if ((do_loc || do_debug_loc || do_debug_ranges) + && num_debug_info_entries == 0) + num_debug_info_entries = num_units; + + if (!do_loc) + { + printf ("\n"); + } + + return 1; +} + +/* 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 +load_debug_info (void * file) +{ + /* Reset the last pointer size so that we can issue correct error + messages if we are displaying the contents of more than one section. */ + last_pointer_size = 0; + warned_about_missing_comp_units = FALSE; + + /* If we already have the information there is nothing else to do. */ + if (num_debug_info_entries > 0) + return num_debug_info_entries; + + if (load_debug_section (info, file) + && process_debug_info (&debug_displays [info].section, file, 1)) + return num_debug_info_entries; + else + return 0; +} + +/* Retrieve the pointer size associated with the given compilation unit. + Optionally the offset of this unit into the .debug_info section is + also retutned. If there is no .debug_info section then an error + message is issued and 0 is returned. If the requested comp unit has + not been defined in the .debug_info section then a warning message + is issued and the last know pointer size is returned. This message + is only issued once per section dumped per file dumped. */ + +static unsigned int +get_pointer_size_and_offset_of_comp_unit (unsigned int comp_unit, + const char * section_name, + unsigned long * offset_return) +{ + unsigned long offset = 0; + + if (num_debug_info_entries == 0) + error (_("%s section needs a populated .debug_info section\n"), + section_name); + + else if (comp_unit >= num_debug_info_entries) + { + if (!warned_about_missing_comp_units) + { + warn (_("%s section has more comp units than .debug_info section\n"), + section_name); + warn (_("assuming that the pointer size is %d, from the last comp unit in .debug_info\n\n"), + last_pointer_size); + warned_about_missing_comp_units = TRUE; + } + } + else + { + last_pointer_size = debug_information [comp_unit].pointer_size; + offset = debug_information [comp_unit].cu_offset; + } + + if (offset_return != NULL) + * offset_return = offset; + + return last_pointer_size; +} + +static int +display_debug_lines (struct dwarf_section *section, void *file) +{ + unsigned char *start = section->start; + unsigned char *data = start; + unsigned char *end = start + section->size; + unsigned int comp_unit = 0; + + printf (_("\nDump of debug contents of section %s:\n\n"), + section->name); + + load_debug_info (file); + + while (data < end) + { + DWARF2_Internal_LineInfo info; + unsigned char *standard_opcodes; + unsigned char *end_of_sequence; + unsigned char *hdrptr; + unsigned int pointer_size; + int initial_length_size; + int offset_size; + int i; + + hdrptr = data; + + /* Check the length of the block. */ + info.li_length = byte_get (hdrptr, 4); + hdrptr += 4; + + if (info.li_length == 0xffffffff) + { + /* This section is 64-bit DWARF 3. */ + info.li_length = byte_get (hdrptr, 8); + hdrptr += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + if (info.li_length + initial_length_size > section->size) + { + warn + (_("The line info appears to be corrupt - the section is too small\n")); + return 0; + } + + /* Check its version number. */ + info.li_version = byte_get (hdrptr, 2); + hdrptr += 2; + if (info.li_version != 2 && info.li_version != 3) + { + warn (_("Only DWARF version 2 and 3 line info is currently supported.\n")); + return 0; + } + + info.li_prologue_length = byte_get (hdrptr, offset_size); + hdrptr += offset_size; + info.li_min_insn_length = byte_get (hdrptr, 1); + hdrptr++; + info.li_default_is_stmt = byte_get (hdrptr, 1); + hdrptr++; + info.li_line_base = byte_get (hdrptr, 1); + hdrptr++; + info.li_line_range = byte_get (hdrptr, 1); + hdrptr++; + info.li_opcode_base = byte_get (hdrptr, 1); + hdrptr++; + + /* Sign extend the line base field. */ + info.li_line_base <<= 24; + info.li_line_base >>= 24; + + /* Get the pointer size from the comp unit associated + with this block of line number information. */ + pointer_size = get_pointer_size_and_offset_of_comp_unit + (comp_unit, ".debug_line", NULL); + comp_unit ++; + + printf (_(" Length: %ld\n"), info.li_length); + printf (_(" DWARF Version: %d\n"), info.li_version); + printf (_(" Prologue Length: %d\n"), info.li_prologue_length); + printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length); + printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt); + printf (_(" Line Base: %d\n"), info.li_line_base); + printf (_(" Line Range: %d\n"), info.li_line_range); + printf (_(" Opcode Base: %d\n"), info.li_opcode_base); + printf (_(" (Pointer size: %u)%s\n"), + pointer_size, + warned_about_missing_comp_units ? " [assumed]" : "" ); + + end_of_sequence = data + info.li_length + initial_length_size; + + reset_state_machine (info.li_default_is_stmt); + + /* Display the contents of the Opcodes table. */ + standard_opcodes = hdrptr; + + printf (_("\n Opcodes:\n")); + + for (i = 1; i < info.li_opcode_base; i++) + printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); + + /* Display the contents of the Directory table. */ + data = standard_opcodes + info.li_opcode_base - 1; + + if (*data == 0) + printf (_("\n The Directory Table is empty.\n")); + else + { + printf (_("\n The Directory Table:\n")); + + while (*data != 0) + { + printf (_(" %s\n"), data); + + data += strlen ((char *) data) + 1; + } + } + + /* Skip the NUL at the end of the table. */ + data++; + + /* Display the contents of the File Name table. */ + if (*data == 0) + printf (_("\n The File Name Table is empty.\n")); + else + { + printf (_("\n The File Name Table:\n")); + printf (_(" Entry\tDir\tTime\tSize\tName\n")); + + while (*data != 0) + { + unsigned char *name; + unsigned int bytes_read; + + printf (_(" %d\t"), ++state_machine_regs.last_file_entry); + name = data; + + data += strlen ((char *) data) + 1; + + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + data += bytes_read; + printf (_("%s\n"), name); + } + } + + /* Skip the NUL at the end of the table. */ + data++; + + /* Now display the statements. */ + printf (_("\n Line Number Statements:\n")); + + while (data < end_of_sequence) + { + unsigned char op_code; + int adv; + unsigned long int uladv; + unsigned int bytes_read; + + op_code = *data++; + + if (op_code >= info.li_opcode_base) + { + op_code -= info.li_opcode_base; + uladv = (op_code / info.li_line_range) * info.li_min_insn_length; + state_machine_regs.address += uladv; + printf (_(" Special opcode %d: advance Address by %lu to 0x%lx"), + op_code, uladv, 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: + if (pointer_size == 0) + { + warn (_("Extend line ops need a valid pointer size, guessing at 4\n")); + pointer_size = 4; + } + + data += process_extended_line_op (data, info.li_default_is_stmt, + pointer_size); + break; + + case DW_LNS_copy: + printf (_(" Copy\n")); + break; + + case DW_LNS_advance_pc: + uladv = read_leb128 (data, & bytes_read, 0); + uladv *= info.li_min_insn_length; + data += bytes_read; + state_machine_regs.address += uladv; + printf (_(" Advance PC by %lu to 0x%lx\n"), uladv, + state_machine_regs.address); + break; + + case DW_LNS_advance_line: + adv = read_leb128 (data, & bytes_read, 1); + data += bytes_read; + state_machine_regs.line += adv; + printf (_(" Advance Line by %d to %d\n"), adv, + state_machine_regs.line); + break; + + case DW_LNS_set_file: + adv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set File Name to entry %d in the File Name Table\n"), + adv); + state_machine_regs.file = adv; + break; + + case DW_LNS_set_column: + uladv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set column to %lu\n"), uladv); + state_machine_regs.column = uladv; + break; + + case DW_LNS_negate_stmt: + adv = state_machine_regs.is_stmt; + adv = ! adv; + printf (_(" Set is_stmt to %d\n"), adv); + state_machine_regs.is_stmt = adv; + break; + + case DW_LNS_set_basic_block: + printf (_(" Set basic block\n")); + state_machine_regs.basic_block = 1; + break; + + case DW_LNS_const_add_pc: + uladv = (((255 - info.li_opcode_base) / info.li_line_range) + * info.li_min_insn_length); + state_machine_regs.address += uladv; + printf (_(" Advance PC by constant %lu to 0x%lx\n"), uladv, + state_machine_regs.address); + break; + + case DW_LNS_fixed_advance_pc: + uladv = byte_get (data, 2); + data += 2; + state_machine_regs.address += uladv; + printf (_(" Advance PC by fixed size amount %lu to 0x%lx\n"), + uladv, 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: + uladv = read_leb128 (data, & bytes_read, 0); + data += bytes_read; + printf (_(" Set ISA to %lu\n"), uladv); + 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 (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + DWARF2_Internal_PubNames pubnames; + unsigned char *start = section->start; + unsigned char *end = start + section->size; + + printf (_("Contents of the %s section:\n\n"), section->name); + + while (start < end) + { + unsigned char *data; + unsigned long offset; + int offset_size, initial_length_size; + + data = start; + + pubnames.pn_length = byte_get (data, 4); + data += 4; + if (pubnames.pn_length == 0xffffffff) + { + pubnames.pn_length = byte_get (data, 8); + data += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + pubnames.pn_version = byte_get (data, 2); + data += 2; + pubnames.pn_offset = byte_get (data, offset_size); + data += offset_size; + pubnames.pn_size = byte_get (data, offset_size); + data += offset_size; + + start += pubnames.pn_length + initial_length_size; + + if (pubnames.pn_version != 2 && pubnames.pn_version != 3) + { + static int warned = 0; + + if (! warned) + { + warn (_("Only DWARF 2 and 3 pubnames are currently supported\n")); + warned = 1; + } + + continue; + } + + printf (_(" Length: %ld\n"), + pubnames.pn_length); + printf (_(" Version: %d\n"), + pubnames.pn_version); + printf (_(" Offset into .debug_info section: %ld\n"), + pubnames.pn_offset); + printf (_(" Size of area in .debug_info section: %ld\n"), + pubnames.pn_size); + + printf (_("\n Offset\tName\n")); + + do + { + offset = byte_get (data, offset_size); + + if (offset != 0) + { + data += offset_size; + printf (" %-6ld\t\t%s\n", offset, data); + data += strlen ((char *) data) + 1; + } + } + while (offset != 0); + } + + printf ("\n"); + return 1; +} + +static int +display_debug_macinfo (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->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); + + while (curr < end) + { + unsigned int lineno; + const char *string; + + op = *curr; + curr++; + + switch (op) + { + case DW_MACINFO_start_file: + { + unsigned int filenum; + + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + filenum = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + + printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), + lineno, filenum); + } + break; + + case DW_MACINFO_end_file: + printf (_(" DW_MACINFO_end_file\n")); + break; + + case DW_MACINFO_define: + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = (char *) curr; + curr += strlen (string) + 1; + printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"), + lineno, string); + break; + + case DW_MACINFO_undef: + lineno = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = (char *) curr; + curr += strlen (string) + 1; + printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), + lineno, string); + break; + + case DW_MACINFO_vendor_ext: + { + unsigned int constant; + + constant = read_leb128 (curr, & bytes_read, 0); + curr += bytes_read; + string = (char *) 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 (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + abbrev_entry *entry; + unsigned char *start = section->start; + unsigned char *end = start + section->size; + + printf (_("Contents of the %s section:\n\n"), section->name); + + do + { + free_abbrevs (); + + 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)); + } + } + while (start); + + printf ("\n"); + + return 1; +} + +static int +display_debug_loc (struct dwarf_section *section, void *file) +{ + unsigned char *start = section->start; + unsigned char *section_end; + unsigned long bytes; + unsigned char *section_begin = start; + 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; + + bytes = section->size; + section_end = start + bytes; + + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + load_debug_info (file); + + /* Check the order of location list in .debug_info section. If + offsets of location lists are in the ascending order, we can + use `debug_information' directly. */ + for (i = 0; i < num_debug_info_entries; i++) + { + unsigned int num; + + num = debug_information [i].num_loc_offsets; + num_loc_list += num; + + /* Check if we can use `debug_information' directly. */ + if (use_debug_info && num != 0) + { + if (!seen_first_offset) + { + /* This is the first location list. */ + last_offset = debug_information [i].loc_offsets [0]; + first = i; + seen_first_offset = 1; + j = 1; + } + else + j = 0; + + for (; j < num; j++) + { + if (last_offset > + debug_information [i].loc_offsets [j]) + { + use_debug_info = 0; + break; + } + last_offset = debug_information [i].loc_offsets [j]; + } + } + } + + if (!use_debug_info) + /* FIXME: Should we handle this case? */ + error (_("Location lists in .debug_info section aren't in ascending order!\n")); + + if (!seen_first_offset) + error (_("No location lists in .debug_info section!\n")); + + if (debug_information [first].loc_offsets [0] != 0) + warn (_("Location lists in %s section start at 0x%lx\n"), + section->name, debug_information [first].loc_offsets [0]); + + printf (_("Contents of the %s section:\n\n"), section->name); + printf (_(" Offset Begin End Expression\n")); + + seen_first_offset = 0; + for (i = first; i < num_debug_info_entries; i++) + { + unsigned long begin; + unsigned long end; + unsigned short length; + unsigned long offset; + unsigned int pointer_size; + unsigned long cu_offset; + unsigned long base_address; + int need_frame_base; + int has_frame_base; + + pointer_size = debug_information [i].pointer_size; + cu_offset = debug_information [i].cu_offset; + + for (j = 0; j < debug_information [i].num_loc_offsets; j++) + { + has_frame_base = debug_information [i].have_frame_base [j]; + offset = debug_information [i].loc_offsets [j]; + next = section_begin + offset; + base_address = debug_information [i].base_address; + + 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"), + (long)(start - section_begin), (long)(next - section_begin)); + else if (start > next) + warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), + (long)(start - section_begin), (long)(next - section_begin)); + } + start = next; + + if (offset >= bytes) + { + warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), + offset); + continue; + } + + while (1) + { + if (start + 2 * pointer_size > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + begin = byte_get (start, pointer_size); + start += pointer_size; + end = byte_get (start, pointer_size); + start += pointer_size; + + if (begin == 0 && end == 0) + { + printf (_(" %8.8lx <End of list>\n"), offset); + break; + } + + /* Check base address specifiers. */ + if (begin == -1UL && end != -1UL) + { + base_address = end; + printf (_(" %8.8lx %8.8lx %8.8lx (base address)\n"), + offset, begin, end); + continue; + } + + if (start + 2 > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + length = byte_get (start, 2); + start += 2; + + if (start + length > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + printf (" %8.8lx %8.8lx %8.8lx (", + offset, begin + base_address, end + base_address); + need_frame_base = decode_location_expression (start, + pointer_size, + length, + cu_offset); + putchar (')'); + + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); + + if (begin == end) + fputs (_(" (start == end)"), stdout); + else if (begin > end) + fputs (_(" (start > end)"), stdout); + + putchar ('\n'); + + start += length; + } + } + } + return 1; +} + +static int +display_debug_str (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned long bytes = section->size; + dwarf_vma addr = section->address; + + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + printf (_("Contents of the %s section:\n\n"), section->name); + + while (bytes) + { + int j; + int k; + int lbytes; + + lbytes = (bytes > 16 ? 16 : bytes); + + printf (" 0x%8.8lx ", (unsigned long) addr); + + for (j = 0; j < 16; j++) + { + if (j < lbytes) + printf ("%2.2x", start[j]); + else + printf (" "); + + if ((j & 3) == 3) + printf (" "); + } + + for (j = 0; j < lbytes; j++) + { + k = start[j]; + if (k >= ' ' && k < 0x80) + printf ("%c", k); + else + printf ("."); + } + + putchar ('\n'); + + start += lbytes; + addr += lbytes; + bytes -= lbytes; + } + + putchar ('\n'); + + return 1; +} + + +static int +display_debug_info (struct dwarf_section *section, void *file) +{ + return process_debug_info (section, file, 0); +} + + +static int +display_debug_aranges (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; + + printf (_("The section %s contains:\n\n"), section->name); + + while (start < end) + { + unsigned char *hdrptr; + DWARF2_Internal_ARange arange; + unsigned char *ranges; + unsigned long length; + unsigned long address; + int excess; + int offset_size; + int initial_length_size; + + hdrptr = start; + + arange.ar_length = byte_get (hdrptr, 4); + hdrptr += 4; + + if (arange.ar_length == 0xffffffff) + { + arange.ar_length = byte_get (hdrptr, 8); + hdrptr += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + arange.ar_version = byte_get (hdrptr, 2); + hdrptr += 2; + + arange.ar_info_offset = byte_get (hdrptr, offset_size); + hdrptr += offset_size; + + arange.ar_pointer_size = byte_get (hdrptr, 1); + hdrptr += 1; + + arange.ar_segment_size = byte_get (hdrptr, 1); + hdrptr += 1; + + if (arange.ar_version != 2 && arange.ar_version != 3) + { + warn (_("Only DWARF 2 and 3 aranges are currently supported.\n")); + break; + } + + printf (_(" Length: %ld\n"), arange.ar_length); + printf (_(" Version: %d\n"), arange.ar_version); + printf (_(" Offset into .debug_info: %lx\n"), arange.ar_info_offset); + printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size); + printf (_(" Segment Size: %d\n"), arange.ar_segment_size); + + printf (_("\n Address Length\n")); + + ranges = hdrptr; + + /* Must pad to an alignment boundary that is twice the pointer size. */ + excess = (hdrptr - start) % (2 * arange.ar_pointer_size); + if (excess) + ranges += (2 * arange.ar_pointer_size) - excess; + + for (;;) + { + address = byte_get (ranges, arange.ar_pointer_size); + + ranges += arange.ar_pointer_size; + + length = byte_get (ranges, arange.ar_pointer_size); + + ranges += arange.ar_pointer_size; + + /* A pair of zeros marks the end of the list. */ + if (address == 0 && length == 0) + break; + + printf (" %8.8lx %lu\n", address, length); + } + + start += arange.ar_length + initial_length_size; + } + + printf ("\n"); + + return 1; +} + +static int +display_debug_ranges (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *section_end; + unsigned long bytes; + unsigned char *section_begin = start; + unsigned int num_range_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; + + bytes = section->size; + section_end = start + bytes; + + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + load_debug_info (file); + + /* Check the order of range list in .debug_info section. If + offsets of range lists are in the ascending order, we can + use `debug_information' directly. */ + for (i = 0; i < num_debug_info_entries; i++) + { + unsigned int num; + + num = debug_information [i].num_range_lists; + num_range_list += num; + + /* Check if we can use `debug_information' directly. */ + if (use_debug_info && num != 0) + { + if (!seen_first_offset) + { + /* This is the first range list. */ + last_offset = debug_information [i].range_lists [0]; + first = i; + seen_first_offset = 1; + j = 1; + } + else + j = 0; + + for (; j < num; j++) + { + if (last_offset > + debug_information [i].range_lists [j]) + { + use_debug_info = 0; + break; + } + last_offset = debug_information [i].range_lists [j]; + } + } + } + + if (!use_debug_info) + /* FIXME: Should we handle this case? */ + error (_("Range lists in .debug_info section aren't in ascending order!\n")); + + if (!seen_first_offset) + error (_("No range lists in .debug_info section!\n")); + + if (debug_information [first].range_lists [0] != 0) + warn (_("Range lists in %s section start at 0x%lx\n"), + section->name, debug_information [first].range_lists [0]); + + printf (_("Contents of the %s section:\n\n"), section->name); + printf (_(" Offset Begin End\n")); + + seen_first_offset = 0; + for (i = first; i < num_debug_info_entries; i++) + { + unsigned long begin; + unsigned long end; + unsigned long offset; + unsigned int pointer_size; + unsigned long base_address; + + pointer_size = debug_information [i].pointer_size; + + for (j = 0; j < debug_information [i].num_range_lists; j++) + { + offset = debug_information [i].range_lists [j]; + next = section_begin + offset; + base_address = debug_information [i].base_address; + + if (!seen_first_offset) + seen_first_offset = 1; + else + { + if (start < next) + warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), + (long)(start - section_begin), + (long)(next - section_begin), section->name); + else if (start > next) + warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), + (long)(start - section_begin), + (long)(next - section_begin), section->name); + } + start = next; + + while (1) + { + begin = byte_get (start, pointer_size); + start += pointer_size; + end = byte_get (start, pointer_size); + start += pointer_size; + + if (begin == 0 && end == 0) + { + printf (_(" %8.8lx <End of list>\n"), offset); + break; + } + + /* Check base address specifiers. */ + if (begin == -1UL && end != -1UL) + { + base_address = end; + printf (" %8.8lx %8.8lx %8.8lx (base address)\n", + offset, begin, end); + continue; + } + + printf (" %8.8lx %8.8lx %8.8lx", + offset, begin + base_address, end + base_address); + + if (begin == end) + fputs (_(" (start == end)"), stdout); + else if (begin > end) + fputs (_(" (start > end)"), stdout); + + putchar ('\n'); + } + } + } + putchar ('\n'); + return 1; +} + +typedef struct Frame_Chunk +{ + struct Frame_Chunk *next; + unsigned char *chunk_start; + int ncols; + /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */ + short int *col_type; + int *col_offset; + char *augmentation; + unsigned int code_factor; + int data_factor; + unsigned long pc_begin; + unsigned long pc_range; + int cfa_reg; + int cfa_offset; + int ra; + unsigned char fde_encoding; + unsigned char cfa_exp; +} +Frame_Chunk; + +/* A marker for a col_type that means this column was never referenced + in the frame info. */ +#define DW_CFA_unreferenced (-1) + +static void +frame_need_space (Frame_Chunk *fc, int reg) +{ + int prev = fc->ncols; + + if (reg < fc->ncols) + return; + + fc->ncols = reg + 1; + fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int)); + fc->col_offset = xcrealloc (fc->col_offset, fc->ncols, sizeof (int)); + + while (prev < fc->ncols) + { + fc->col_type[prev] = DW_CFA_unreferenced; + fc->col_offset[prev] = 0; + prev++; + } +} + +static void +frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs) +{ + int r; + char tmp[100]; + + if (*max_regs < fc->ncols) + *max_regs = fc->ncols; + + if (*need_col_headers) + { + *need_col_headers = 0; + + printf (" LOC CFA "); + + for (r = 0; r < *max_regs; r++) + if (fc->col_type[r] != DW_CFA_unreferenced) + { + if (r == fc->ra) + printf ("ra "); + else + printf ("r%-4d", r); + } + + printf ("\n"); + } + + printf ("%08lx ", fc->pc_begin); + if (fc->cfa_exp) + strcpy (tmp, "exp"); + else + sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset); + printf ("%-8s ", tmp); + + for (r = 0; r < fc->ncols; r++) + { + if (fc->col_type[r] != DW_CFA_unreferenced) + { + switch (fc->col_type[r]) + { + case DW_CFA_undefined: + strcpy (tmp, "u"); + break; + case DW_CFA_same_value: + strcpy (tmp, "s"); + break; + case DW_CFA_offset: + sprintf (tmp, "c%+d", fc->col_offset[r]); + break; + case DW_CFA_register: + sprintf (tmp, "r%d", fc->col_offset[r]); + break; + case DW_CFA_expression: + strcpy (tmp, "exp"); + break; + default: + strcpy (tmp, "n/a"); + break; + } + printf ("%-5s", tmp); + } + } + printf ("\n"); +} + +static int +size_of_encoded_value (int encoding) +{ + switch (encoding & 0x7) + { + default: /* ??? */ + case 0: return eh_addr_size; + case 2: return 2; + case 3: return 4; + case 4: return 8; + } +} + +static dwarf_vma +get_encoded_value (unsigned char *data, int encoding) +{ + int size = size_of_encoded_value (encoding); + if (encoding & DW_EH_PE_signed) + return byte_get_signed (data, size); + else + return byte_get (data, size); +} + +#define GET(N) byte_get (start, N); start += N +#define LEB() read_leb128 (start, & length_return, 0); start += length_return +#define SLEB() read_leb128 (start, & length_return, 1); start += length_return + +static int +display_debug_frames (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; + unsigned char *section_start = start; + Frame_Chunk *chunks = 0; + Frame_Chunk *remembered_state = 0; + Frame_Chunk *rs; + int is_eh = strcmp (section->name, ".eh_frame") == 0; + unsigned int length_return; + int max_regs = 0; + + printf (_("The section %s contains:\n"), section->name); + + while (start < end) + { + unsigned char *saved_start; + unsigned char *block_end; + unsigned long length; + unsigned long cie_id; + Frame_Chunk *fc; + Frame_Chunk *cie; + int need_col_headers = 1; + unsigned char *augmentation_data = NULL; + unsigned long augmentation_data_len = 0; + int encoded_ptr_size = eh_addr_size; + int offset_size; + int initial_length_size; + + saved_start = start; + length = byte_get (start, 4); start += 4; + + if (length == 0) + { + printf ("\n%08lx ZERO terminator\n\n", + (unsigned long)(saved_start - section_start)); + return 1; + } + + if (length == 0xffffffff) + { + length = byte_get (start, 8); + start += 8; + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + block_end = saved_start + length + initial_length_size; + cie_id = byte_get (start, offset_size); start += offset_size; + + if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID)) + { + int version; + + fc = xmalloc (sizeof (Frame_Chunk)); + memset (fc, 0, sizeof (Frame_Chunk)); + + fc->next = chunks; + chunks = fc; + fc->chunk_start = saved_start; + fc->ncols = 0; + fc->col_type = xmalloc (sizeof (short int)); + fc->col_offset = xmalloc (sizeof (int)); + frame_need_space (fc, max_regs-1); + + version = *start++; + + fc->augmentation = (char *) start; + start = (unsigned char *) strchr ((char *) start, '\0') + 1; + + if (fc->augmentation[0] == 'z') + { + fc->code_factor = LEB (); + fc->data_factor = SLEB (); + if (version == 1) + { + fc->ra = GET (1); + } + else + { + fc->ra = LEB (); + } + augmentation_data_len = LEB (); + augmentation_data = start; + start += augmentation_data_len; + } + else if (strcmp (fc->augmentation, "eh") == 0) + { + start += eh_addr_size; + fc->code_factor = LEB (); + fc->data_factor = SLEB (); + if (version == 1) + { + fc->ra = GET (1); + } + else + { + fc->ra = LEB (); + } + } + else + { + fc->code_factor = LEB (); + fc->data_factor = SLEB (); + if (version == 1) + { + fc->ra = GET (1); + } + else + { + fc->ra = LEB (); + } + } + cie = fc; + + if (do_debug_frames_interp) + printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n", + (unsigned long)(saved_start - section_start), length, cie_id, + fc->augmentation, fc->code_factor, fc->data_factor, + fc->ra); + else + { + printf ("\n%08lx %08lx %08lx CIE\n", + (unsigned long)(saved_start - section_start), length, cie_id); + printf (" Version: %d\n", version); + printf (" Augmentation: \"%s\"\n", fc->augmentation); + printf (" Code alignment factor: %u\n", fc->code_factor); + printf (" Data alignment factor: %d\n", fc->data_factor); + printf (" Return address column: %d\n", fc->ra); + + if (augmentation_data_len) + { + unsigned long i; + printf (" Augmentation data: "); + for (i = 0; i < augmentation_data_len; ++i) + printf (" %02x", augmentation_data[i]); + putchar ('\n'); + } + putchar ('\n'); + } + + if (augmentation_data_len) + { + unsigned char *p, *q; + p = (unsigned char *) fc->augmentation + 1; + q = augmentation_data; + + while (1) + { + if (*p == 'L') + q++; + else if (*p == 'P') + q += 1 + size_of_encoded_value (*q); + else if (*p == 'R') + fc->fde_encoding = *q++; + else + break; + p++; + } + + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + } + + frame_need_space (fc, fc->ra); + } + else + { + unsigned char *look_for; + static Frame_Chunk fde_fc; + + fc = & fde_fc; + memset (fc, 0, sizeof (Frame_Chunk)); + + look_for = is_eh ? start - 4 - cie_id : section_start + cie_id; + + for (cie = chunks; cie ; cie = cie->next) + if (cie->chunk_start == look_for) + break; + + if (!cie) + { + warn ("Invalid CIE pointer %08lx in FDE at %p\n", + cie_id, saved_start); + start = block_end; + fc->ncols = 0; + fc->col_type = xmalloc (sizeof (short int)); + fc->col_offset = xmalloc (sizeof (int)); + frame_need_space (fc, max_regs - 1); + cie = fc; + fc->augmentation = ""; + fc->fde_encoding = 0; + } + else + { + fc->ncols = cie->ncols; + fc->col_type = xcmalloc (fc->ncols, sizeof (short int)); + fc->col_offset = xcmalloc (fc->ncols, sizeof (int)); + memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int)); + memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int)); + fc->augmentation = cie->augmentation; + fc->code_factor = cie->code_factor; + fc->data_factor = cie->data_factor; + fc->cfa_reg = cie->cfa_reg; + fc->cfa_offset = cie->cfa_offset; + fc->ra = cie->ra; + frame_need_space (fc, max_regs-1); + fc->fde_encoding = cie->fde_encoding; + } + + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + + fc->pc_begin = get_encoded_value (start, fc->fde_encoding); + if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel + /* Don't adjust for relocatable file since there's + invariably a pcrel reloc here, which we haven't + applied. */ + && !is_relocatable) + fc->pc_begin += section->address + (start - section_start); + start += encoded_ptr_size; + fc->pc_range = byte_get (start, encoded_ptr_size); + start += encoded_ptr_size; + + if (cie->augmentation[0] == 'z') + { + augmentation_data_len = LEB (); + augmentation_data = start; + start += augmentation_data_len; + } + + printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=%08lx..%08lx\n", + (unsigned long)(saved_start - section_start), length, cie_id, + (unsigned long)(cie->chunk_start - section_start), + fc->pc_begin, fc->pc_begin + fc->pc_range); + 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]); + putchar ('\n'); + putchar ('\n'); + } + } + + /* At this point, fc is the current chunk, cie (if any) is set, and + we're about to interpret instructions for the chunk. */ + /* ??? At present we need to do this always, since this sizes the + fc->col_type and fc->col_offset arrays, which we write into always. + We should probably split the interpreted and non-interpreted bits + into two different routines, since there's so much that doesn't + really overlap between them. */ + if (1 || do_debug_frames_interp) + { + /* Start by making a pass over the chunk, allocating storage + and taking note of what registers are used. */ + unsigned char *tmp = start; + + while (start < block_end) + { + unsigned op, opa; + unsigned long reg, tmp; + + op = *start++; + opa = op & 0x3f; + if (op & 0xc0) + op &= 0xc0; + + /* Warning: if you add any more cases to this switch, be + sure to add them to the corresponding switch below. */ + switch (op) + { + case DW_CFA_advance_loc: + break; + case DW_CFA_offset: + LEB (); + frame_need_space (fc, opa); + fc->col_type[opa] = DW_CFA_undefined; + break; + case DW_CFA_restore: + frame_need_space (fc, opa); + fc->col_type[opa] = DW_CFA_undefined; + break; + case DW_CFA_set_loc: + start += encoded_ptr_size; + break; + case DW_CFA_advance_loc1: + start += 1; + break; + case DW_CFA_advance_loc2: + start += 2; + break; + case DW_CFA_advance_loc4: + start += 4; + break; + case DW_CFA_offset_extended: + reg = LEB (); LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_restore_extended: + reg = LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_undefined: + reg = LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_same_value: + reg = LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_register: + reg = LEB (); LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_def_cfa: + LEB (); LEB (); + break; + case DW_CFA_def_cfa_register: + LEB (); + break; + case DW_CFA_def_cfa_offset: + LEB (); + break; + case DW_CFA_def_cfa_expression: + tmp = LEB (); + start += tmp; + break; + case DW_CFA_expression: + reg = LEB (); + tmp = LEB (); + start += tmp; + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_offset_extended_sf: + reg = LEB (); SLEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_def_cfa_sf: + LEB (); SLEB (); + break; + case DW_CFA_def_cfa_offset_sf: + SLEB (); + break; + case DW_CFA_MIPS_advance_loc8: + start += 8; + break; + case DW_CFA_GNU_args_size: + LEB (); + break; + case DW_CFA_GNU_negative_offset_extended: + reg = LEB (); LEB (); + frame_need_space (fc, reg); + fc->col_type[reg] = DW_CFA_undefined; + + default: + break; + } + } + start = tmp; + } + + /* Now we know what registers are used, make a second pass over + the chunk, this time actually printing out the info. */ + + while (start < block_end) + { + unsigned op, opa; + unsigned long ul, reg, roffs; + long l, ofs; + dwarf_vma vma; + + op = *start++; + opa = op & 0x3f; + if (op & 0xc0) + op &= 0xc0; + + /* Warning: if you add any more cases to this switch, be + sure to add them to the corresponding switch above. */ + switch (op) + { + case DW_CFA_advance_loc: + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc: %d to %08lx\n", + opa * fc->code_factor, + fc->pc_begin + opa * fc->code_factor); + fc->pc_begin += opa * fc->code_factor; + break; + + case DW_CFA_offset: + roffs = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_offset: r%d at cfa%+ld\n", + opa, roffs * fc->data_factor); + fc->col_type[opa] = DW_CFA_offset; + fc->col_offset[opa] = roffs * fc->data_factor; + break; + + case DW_CFA_restore: + if (! do_debug_frames_interp) + printf (" DW_CFA_restore: r%d\n", opa); + fc->col_type[opa] = cie->col_type[opa]; + fc->col_offset[opa] = cie->col_offset[opa]; + break; + + case DW_CFA_set_loc: + vma = get_encoded_value (start, fc->fde_encoding); + if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel + && !is_relocatable) + vma += section->address + (start - section_start); + start += encoded_ptr_size; + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma); + fc->pc_begin = vma; + break; + + case DW_CFA_advance_loc1: + ofs = byte_get (start, 1); start += 1; + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc1: %ld to %08lx\n", + ofs * fc->code_factor, + fc->pc_begin + ofs * fc->code_factor); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc2: + ofs = byte_get (start, 2); start += 2; + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc2: %ld to %08lx\n", + ofs * fc->code_factor, + fc->pc_begin + ofs * fc->code_factor); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc4: + ofs = byte_get (start, 4); start += 4; + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc4: %ld to %08lx\n", + ofs * fc->code_factor, + fc->pc_begin + ofs * fc->code_factor); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_offset_extended: + reg = LEB (); + roffs = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_offset_extended: r%ld at cfa%+ld\n", + reg, roffs * fc->data_factor); + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = roffs * fc->data_factor; + break; + + case DW_CFA_restore_extended: + reg = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_restore_extended: r%ld\n", reg); + fc->col_type[reg] = cie->col_type[reg]; + fc->col_offset[reg] = cie->col_offset[reg]; + break; + + case DW_CFA_undefined: + reg = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_undefined: r%ld\n", reg); + fc->col_type[reg] = DW_CFA_undefined; + fc->col_offset[reg] = 0; + break; + + case DW_CFA_same_value: + reg = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_same_value: r%ld\n", reg); + fc->col_type[reg] = DW_CFA_same_value; + fc->col_offset[reg] = 0; + break; + + case DW_CFA_register: + reg = LEB (); + roffs = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_register: r%ld in r%ld\n", reg, roffs); + fc->col_type[reg] = DW_CFA_register; + fc->col_offset[reg] = roffs; + break; + + case DW_CFA_remember_state: + if (! do_debug_frames_interp) + printf (" DW_CFA_remember_state\n"); + rs = xmalloc (sizeof (Frame_Chunk)); + rs->ncols = fc->ncols; + rs->col_type = xcmalloc (rs->ncols, sizeof (short int)); + rs->col_offset = xcmalloc (rs->ncols, sizeof (int)); + memcpy (rs->col_type, fc->col_type, rs->ncols); + memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int)); + rs->next = remembered_state; + remembered_state = rs; + break; + + case DW_CFA_restore_state: + if (! do_debug_frames_interp) + printf (" DW_CFA_restore_state\n"); + rs = remembered_state; + if (rs) + { + remembered_state = rs->next; + frame_need_space (fc, rs->ncols-1); + memcpy (fc->col_type, rs->col_type, rs->ncols); + memcpy (fc->col_offset, rs->col_offset, + rs->ncols * sizeof (int)); + free (rs->col_type); + free (rs->col_offset); + free (rs); + } + else if (do_debug_frames_interp) + printf ("Mismatched DW_CFA_restore_state\n"); + break; + + case DW_CFA_def_cfa: + fc->cfa_reg = LEB (); + fc->cfa_offset = LEB (); + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa: r%d ofs %d\n", + fc->cfa_reg, fc->cfa_offset); + break; + + case DW_CFA_def_cfa_register: + fc->cfa_reg = LEB (); + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_reg: r%d\n", fc->cfa_reg); + break; + + case DW_CFA_def_cfa_offset: + fc->cfa_offset = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset); + break; + + case DW_CFA_nop: + if (! do_debug_frames_interp) + printf (" DW_CFA_nop\n"); + break; + + case DW_CFA_def_cfa_expression: + ul = LEB (); + if (! do_debug_frames_interp) + { + printf (" DW_CFA_def_cfa_expression ("); + decode_location_expression (start, eh_addr_size, ul, 0); + printf (")\n"); + } + fc->cfa_exp = 1; + start += ul; + break; + + case DW_CFA_expression: + reg = LEB (); + ul = LEB (); + if (! do_debug_frames_interp) + { + printf (" DW_CFA_expression: r%ld (", reg); + decode_location_expression (start, eh_addr_size, ul, 0); + printf (")\n"); + } + fc->col_type[reg] = DW_CFA_expression; + start += ul; + break; + + case DW_CFA_offset_extended_sf: + reg = LEB (); + l = SLEB (); + frame_need_space (fc, reg); + if (! do_debug_frames_interp) + printf (" DW_CFA_offset_extended_sf: r%ld at cfa%+ld\n", + reg, l * fc->data_factor); + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = l * fc->data_factor; + break; + + case DW_CFA_def_cfa_sf: + fc->cfa_reg = LEB (); + fc->cfa_offset = SLEB (); + fc->cfa_offset = fc->cfa_offset * fc->data_factor; + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_sf: r%d ofs %d\n", + fc->cfa_reg, fc->cfa_offset); + break; + + case DW_CFA_def_cfa_offset_sf: + fc->cfa_offset = SLEB (); + fc->cfa_offset = fc->cfa_offset * fc->data_factor; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset); + break; + + case DW_CFA_MIPS_advance_loc8: + ofs = byte_get (start, 8); start += 8; + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n", + ofs * fc->code_factor, + fc->pc_begin + ofs * fc->code_factor); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_GNU_window_save: + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_window_save\n"); + break; + + case DW_CFA_GNU_args_size: + ul = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_args_size: %ld\n", ul); + break; + + case DW_CFA_GNU_negative_offset_extended: + reg = LEB (); + l = - LEB (); + frame_need_space (fc, reg); + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_negative_offset_extended: r%ld at cfa%+ld\n", + reg, l * fc->data_factor); + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = l * fc->data_factor; + break; + + default: + warn (_("unsupported or unknown DW_CFA_%d\n"), op); + start = block_end; + } + } + + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + + start = block_end; + } + + printf ("\n"); + + return 1; +} + +#undef GET +#undef LEB +#undef SLEB + +static int +display_debug_not_supported (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + printf (_("Displaying the debug contents of section %s is not yet supported.\n"), + section->name); + + return 1; +} + +void * +cmalloc (size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + return NULL; + else + return malloc (nmemb * size); +} + +void * +xcmalloc (size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + return NULL; + else + return xmalloc (nmemb * size); +} + +void * +xcrealloc (void *ptr, size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + return NULL; + else + return xrealloc (ptr, nmemb * size); +} + +void +error (const char *message, ...) +{ + va_list args; + + va_start (args, message); + fprintf (stderr, _("%s: Error: "), program_name); + vfprintf (stderr, message, args); + va_end (args); +} + +void +warn (const char *message, ...) +{ + va_list args; + + va_start (args, message); + fprintf (stderr, _("%s: Warning: "), program_name); + vfprintf (stderr, message, args); + va_end (args); +} + +void +free_debug_memory (void) +{ + enum dwarf_section_display_enum i; + + free_abbrevs (); + + for (i = 0; i < max; i++) + free_debug_section (i); + + if (debug_information) + { + for (i = 0; i < num_debug_info_entries; i++) + { + if (!debug_information [i].max_loc_offsets) + { + free (debug_information [i].loc_offsets); + free (debug_information [i].have_frame_base); + } + if (!debug_information [i].max_range_lists) + free (debug_information [i].range_lists); + } + free (debug_information); + debug_information = NULL; + num_debug_info_entries = 0; + } + +} + +struct dwarf_section_display debug_displays[] = +{ + { { ".debug_abbrev", NULL, 0, 0 }, + display_debug_abbrev, 0, 0 }, + { { ".debug_aranges", NULL, 0, 0 }, + display_debug_aranges, 0, 0 }, + { { ".debug_frame", NULL, 0, 0 }, + display_debug_frames, 1, 0 }, + { { ".debug_info", NULL, 0, 0 }, + display_debug_info, 1, 0 }, + { { ".debug_line", NULL, 0, 0 }, + display_debug_lines, 0, 0 }, + { { ".debug_pubnames", NULL, 0, 0 }, + display_debug_pubnames, 0, 0 }, + { { ".eh_frame", NULL, 0, 0 }, + display_debug_frames, 1, 1 }, + { { ".debug_macinfo", NULL, 0, 0 }, + display_debug_macinfo, 0, 0 }, + { { ".debug_str", NULL, 0, 0 }, + display_debug_str, 0, 0 }, + { { ".debug_loc", NULL, 0, 0 }, + display_debug_loc, 0, 0 }, + { { ".debug_pubtypes", NULL, 0, 0 }, + display_debug_pubnames, 0, 0 }, + { { ".debug_ranges", NULL, 0, 0 }, + display_debug_ranges, 0, 0 }, + { { ".debug_static_func", NULL, 0, 0 }, + display_debug_not_supported, 0, 0 }, + { { ".debug_static_vars", NULL, 0, 0 }, + display_debug_not_supported, 0, 0 }, + { { ".debug_types", NULL, 0, 0 }, + display_debug_not_supported, 0, 0 }, + { { ".debug_weaknames", NULL, 0, 0 }, + display_debug_not_supported, 0, 0 } +}; |