| /* dwarf.c -- display DWARF contents of a BFD binary file |
| Copyright 2005, 2006, 2007, 2008, 2009 |
| 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 3 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 "sysdep.h" |
| #include "libiberty.h" |
| #include "bfd.h" |
| #include "bucomm.h" |
| #include "elf/common.h" |
| #include "dwarf2.h" |
| #include "dwarf.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; |
| /* Special value for num_debug_info_entries to indicate |
| that the .debug_info section could not be loaded/parsed. */ |
| #define DEBUG_INFO_UNAVAILABLE (unsigned int) -1 |
| |
| int eh_addr_size; |
| |
| 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; |
| int do_wide; |
| |
| /* Values for do_debug_lines. */ |
| #define FLAG_DEBUG_LINES_RAW 1 |
| #define FLAG_DEBUG_LINES_DECODED 2 |
| |
| 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 3: |
| return ((unsigned long) (field[0])) |
| | (((unsigned long) (field[1])) << 8) |
| | (((unsigned long) (field[2])) << 16); |
| |
| 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 3: |
| return ((unsigned long) (field[2])) |
| | (((unsigned long) (field[1])) << 8) |
| | (((unsigned long) (field[0])) << 16); |
| |
| 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 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); |
| } |
| |
| /* Print a dwarf_vma value (typically an address, offset or length) in |
| hexadecimal format, followed by a space. The length of the value (and |
| hence the precision displayed) is determined by the byte_size parameter. */ |
| |
| static void |
| print_dwarf_vma (dwarf_vma val, unsigned byte_size) |
| { |
| static char buff[18]; |
| |
| /* Printf does not have a way of specifiying a maximum field width for an |
| integer value, so we print the full value into a buffer and then select |
| the precision we need. */ |
| #if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) |
| #ifndef __MSVCRT__ |
| snprintf (buff, sizeof (buff), "%16.16llx ", val); |
| #else |
| snprintf (buff, sizeof (buff), "%016I64x ", val); |
| #endif |
| #else |
| snprintf (buff, sizeof (buff), "%16.16lx ", val); |
| #endif |
| |
| fputs (buff + (byte_size == 4 ? 8 : 0), stdout); |
| } |
| |
| 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) |
| { |
| 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, len - bytes_read - 1); |
| 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; |
| |
| case DW_LNE_set_discriminator: |
| printf (_("set Discriminator to %lu\n"), |
| read_leb128 (data, & bytes_read, 0)); |
| break; |
| |
| /* HP extensions. */ |
| case DW_LNE_HP_negate_is_UV_update: |
| printf ("DW_LNE_HP_negate_is_UV_update\n"); |
| break; |
| case DW_LNE_HP_push_context: |
| printf ("DW_LNE_HP_push_context\n"); |
| break; |
| case DW_LNE_HP_pop_context: |
| printf ("DW_LNE_HP_pop_context\n"); |
| break; |
| case DW_LNE_HP_set_file_line_column: |
| printf ("DW_LNE_HP_set_file_line_column\n"); |
| break; |
| case DW_LNE_HP_set_routine_name: |
| printf ("DW_LNE_HP_set_routine_name\n"); |
| break; |
| case DW_LNE_HP_set_sequence: |
| printf ("DW_LNE_HP_set_sequence\n"); |
| break; |
| case DW_LNE_HP_negate_post_semantics: |
| printf ("DW_LNE_HP_negate_post_semantics\n"); |
| break; |
| case DW_LNE_HP_negate_function_exit: |
| printf ("DW_LNE_HP_negate_function_exit\n"); |
| break; |
| case DW_LNE_HP_negate_front_end_logical: |
| printf ("DW_LNE_HP_negate_front_end_logical\n"); |
| break; |
| case DW_LNE_HP_define_proc: |
| printf ("DW_LNE_HP_define_proc\n"); |
| break; |
| |
| default: |
| if (op_code >= DW_LNE_lo_user |
| /* The test against DW_LNW_hi_user is redundant due to |
| the limited range of the unsigned char data type used |
| for op_code. */ |
| /*&& op_code <= DW_LNE_hi_user*/) |
| printf (_("user defined: length %d\n"), len - bytes_read); |
| else |
| 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>"); |
| |
| /* DWARF sections under Mach-O have non-zero addresses. */ |
| offset -= section->address; |
| 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 = (abbrev_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 = (abbrev_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, |
| struct dwarf_section * section) |
| { |
| 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: |
| /* XXX: Strictly speaking for 64-bit DWARF3 files |
| this ought to be an 8-byte wide computation. */ |
| printf ("DW_OP_call_ref: <%lx>", (long) byte_get (data, 4) + cu_offset); |
| data += 4; |
| break; |
| case DW_OP_form_tls_address: |
| printf ("DW_OP_form_tls_address"); |
| break; |
| case DW_OP_call_frame_cfa: |
| printf ("DW_OP_call_frame_cfa"); |
| break; |
| case DW_OP_bit_piece: |
| printf ("DW_OP_bit_piece: "); |
| printf ("size: %lu ", read_leb128 (data, &bytes_read, 0)); |
| data += bytes_read; |
| printf ("offset: %lu ", read_leb128 (data, &bytes_read, 0)); |
| data += bytes_read; |
| break; |
| |
| /* DWARF 4 extensions. */ |
| case DW_OP_stack_value: |
| printf ("DW_OP_stack_value"); |
| break; |
| |
| case DW_OP_implicit_value: |
| printf ("DW_OP_implicit_value"); |
| uvalue = read_leb128 (data, &bytes_read, 0); |
| data += bytes_read; |
| display_block (data, uvalue); |
| data += uvalue; |
| break; |
| |
| /* GNU extensions. */ |
| case DW_OP_GNU_push_tls_address: |
| printf ("DW_OP_GNU_push_tls_address or DW_OP_HP_unknown"); |
| break; |
| case DW_OP_GNU_uninit: |
| printf ("DW_OP_GNU_uninit"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_GNU_encoded_addr: |
| { |
| int encoding; |
| dwarf_vma addr; |
| |
| encoding = *data++; |
| addr = get_encoded_value (data, encoding); |
| if ((encoding & 0x70) == DW_EH_PE_pcrel) |
| addr += section->address + (data - section->start); |
| data += size_of_encoded_value (encoding); |
| |
| printf ("DW_OP_GNU_encoded_addr: fmt:%02x addr:", encoding); |
| print_dwarf_vma (addr, pointer_size); |
| } |
| break; |
| |
| /* HP extensions. */ |
| case DW_OP_HP_is_value: |
| printf ("DW_OP_HP_is_value"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_HP_fltconst4: |
| printf ("DW_OP_HP_fltconst4"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_HP_fltconst8: |
| printf ("DW_OP_HP_fltconst8"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_HP_mod_range: |
| printf ("DW_OP_HP_mod_range"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_HP_unmod_range: |
| printf ("DW_OP_HP_unmod_range"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| case DW_OP_HP_tls: |
| printf ("DW_OP_HP_tls"); |
| /* FIXME: Is there data associated with this OP ? */ |
| break; |
| |
| /* PGI (STMicroelectronics) extensions. */ |
| case DW_OP_PGI_omp_thread_num: |
| /* Pushes the thread number for the current thread as it would be |
| returned by the standard OpenMP library function: |
| omp_get_thread_num(). The "current thread" is the thread for |
| which the expression is being evaluated. */ |
| printf ("DW_OP_PGI_omp_thread_num"); |
| 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, |
| struct dwarf_section * section) |
| { |
| unsigned long uvalue = 0; |
| unsigned char *block_start = NULL; |
| unsigned char * orig_data = data; |
| 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, |
| section); |
| } |
| |
| switch (form) |
| { |
| case DW_FORM_ref_addr: |
| if (!do_loc) |
| printf (" <0x%lx>", uvalue); |
| break; |
| |
| case DW_FORM_ref1: |
| case DW_FORM_ref2: |
| case DW_FORM_ref4: |
| case DW_FORM_ref_udata: |
| if (!do_loc) |
| printf (" <0x%lx>", uvalue + cu_offset); |
| break; |
| |
| case DW_FORM_data4: |
| case DW_FORM_addr: |
| if (!do_loc) |
| printf (" 0x%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 (" 0x%lx", uvalue); |
| printf (" 0x%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; |
| } |
| |
| 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_string_length: |
| case DW_AT_return_addr: |
| case DW_AT_data_member_location: |
| case DW_AT_vtable_elem_location: |
| case DW_AT_segment: |
| case DW_AT_static_link: |
| case DW_AT_use_location: |
| 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 = (long unsigned int *) |
| xcrealloc (debug_info_p->loc_offsets, |
| max, sizeof (*debug_info_p->loc_offsets)); |
| debug_info_p->have_frame_base = (int *) |
| 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 = (long unsigned int *) |
| 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; |
| |
| /* For some attributes we can display further information. */ |
| 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) |
| { |
| /* Ordered by the numeric value of these constants. */ |
| case DW_LANG_C89: printf ("(ANSI C)"); break; |
| case DW_LANG_C: printf ("(non-ANSI C)"); break; |
| case DW_LANG_Ada83: printf ("(Ada)"); break; |
| case DW_LANG_C_plus_plus: printf ("(C++)"); break; |
| case DW_LANG_Cobol74: printf ("(Cobol 74)"); break; |
| case DW_LANG_Cobol85: printf ("(Cobol 85)"); break; |
| case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break; |
| case DW_LANG_Fortran90: printf ("(Fortran 90)"); break; |
| case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break; |
| case DW_LANG_Modula2: printf ("(Modula 2)"); break; |
| /* DWARF 2.1 values. */ |
| case DW_LANG_Java: printf ("(Java)"); break; |
| case DW_LANG_C99: printf ("(ANSI C99)"); break; |
| case DW_LANG_Ada95: printf ("(ADA 95)"); break; |
| case DW_LANG_Fortran95: printf ("(Fortran 95)"); break; |
| /* DWARF 3 values. */ |
| case DW_LANG_PLI: printf ("(PLI)"); break; |
| case DW_LANG_ObjC: printf ("(Objective C)"); break; |
| case DW_LANG_ObjC_plus_plus: printf ("(Objective C++)"); break; |
| case DW_LANG_UPC: printf ("(Unified Parallel C)"); break; |
| case DW_LANG_D: printf ("(D)"); break; |
| /* MIPS extension. */ |
| case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break; |
| /* UPC extension. */ |
| case DW_LANG_Upc: printf ("(Unified Parallel C)"); break; |
| default: |
| if (uvalue >= DW_LANG_lo_user && uvalue <= DW_LANG_hi_user) |
| printf ("(implementation defined: %lx)", uvalue); |
| else |
| 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 values: */ |
| case DW_ATE_imaginary_float: printf ("(imaginary float)"); break; |
| case DW_ATE_decimal_float: printf ("(decimal float)"); break; |
| /* DWARF 3 values: */ |
| case DW_ATE_packed_decimal: printf ("(packed_decimal)"); break; |
| case DW_ATE_numeric_string: printf ("(numeric_string)"); break; |
| case DW_ATE_edited: printf ("(edited)"); break; |
| case DW_ATE_signed_fixed: printf ("(signed_fixed)"); break; |
| case DW_ATE_unsigned_fixed: printf ("(unsigned_fixed)"); break; |
| /* HP extensions: */ |
| case DW_ATE_HP_float80: printf ("(HP_float80)"); break; |
| case DW_ATE_HP_complex_float80: printf ("(HP_complex_float80)"); break; |
| case DW_ATE_HP_float128: printf ("(HP_float128)"); break; |
| case DW_ATE_HP_complex_float128:printf ("(HP_complex_float128)"); break; |
| case DW_ATE_HP_floathpintel: printf ("(HP_floathpintel)"); break; |
| case DW_ATE_HP_imaginary_float80: printf ("(HP_imaginary_float80)"); break; |
| case DW_ATE_HP_imaginary_float128: printf ("(HP_imaginary_float128)"); 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_string_length: |
| case DW_AT_return_addr: |
| case DW_AT_data_member_location: |
| case DW_AT_vtable_elem_location: |
| case DW_AT_segment: |
| case DW_AT_static_link: |
| case DW_AT_use_location: |
| if (form == DW_FORM_data4 || form == DW_FORM_data8) |
| printf (_("(location list)")); |
| /* Fall through. */ |
| 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, section); |
| printf (")"); |
| if (need_frame_base && !have_frame_base) |
| printf (_(" [without DW_AT_frame_base]")); |
| } |
| break; |
| |
| case DW_AT_import: |
| { |
| if (form == DW_FORM_ref1 |
| || form == DW_FORM_ref2 |
| || form == DW_FORM_ref4) |
| uvalue += cu_offset; |
| |
| if (uvalue >= section->size) |
| warn (_("Offset %lx used as value for DW_AT_import attribute of DIE at offset %lx is too big.\n"), |
| uvalue, (unsigned long) (orig_data - section->start)); |
| else |
| { |
| unsigned long abbrev_number; |
| abbrev_entry * entry; |
| |
| abbrev_number = read_leb128 (section->start + uvalue, NULL, 0); |
| |
| printf ("[Abbrev Number: %ld", abbrev_number); |
| for (entry = first_abbrev; entry != NULL; entry = entry->next) |
| if (entry->entry == abbrev_number) |
| break; |
| if (entry != NULL) |
| printf (" (%s)", get_TAG_name (entry->tag)); |
| printf ("]"); |
| } |
| } |
| 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"; |
| case DW_AT_description: return "DW_AT_description"; |
| case DW_AT_binary_scale: return "DW_AT_binary_scale"; |
| case DW_AT_decimal_scale: return "DW_AT_decimal_scale"; |
| case DW_AT_small: return "DW_AT_small"; |
| case DW_AT_decimal_sign: return "DW_AT_decimal_sign"; |
| case DW_AT_digit_count: return "DW_AT_digit_count"; |
| case DW_AT_picture_string: return "DW_AT_picture_string"; |
| case DW_AT_mutable: return "DW_AT_mutable"; |
| case DW_AT_threads_scaled: return "DW_AT_threads_scaled"; |
| case DW_AT_explicit: return "DW_AT_explicit"; |
| case DW_AT_object_pointer: return "DW_AT_object_pointer"; |
| case DW_AT_endianity: return "DW_AT_endianity"; |
| case DW_AT_elemental: return "DW_AT_elemental"; |
| case DW_AT_pure: return "DW_AT_pure"; |
| case DW_AT_recursive: return "DW_AT_recursive"; |
| |
| /* HP and SGI/MIPS extensions. */ |
| 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"; |
| |
| /* HP Extensions. */ |
| case DW_AT_HP_block_index: return "DW_AT_HP_block_index"; |
| case DW_AT_HP_actuals_stmt_list: return "DW_AT_HP_actuals_stmt_list"; |
| case DW_AT_HP_proc_per_section: return "DW_AT_HP_proc_per_section"; |
| case DW_AT_HP_raw_data_ptr: return "DW_AT_HP_raw_data_ptr"; |
| case DW_AT_HP_pass_by_reference: return "DW_AT_HP_pass_by_reference"; |
| case DW_AT_HP_opt_level: return "DW_AT_HP_opt_level"; |
| case DW_AT_HP_prof_version_id: return "DW_AT_HP_prof_version_id"; |
| case DW_AT_HP_opt_flags: return "DW_AT_HP_opt_flags"; |
| case DW_AT_HP_cold_region_low_pc: return "DW_AT_HP_cold_region_low_pc"; |
| case DW_AT_HP_cold_region_high_pc: return "DW_AT_HP_cold_region_high_pc"; |
| case DW_AT_HP_all_variables_modifiable: return "DW_AT_HP_all_variables_modifiable"; |
| case DW_AT_HP_linkage_name: return "DW_AT_HP_linkage_name"; |
| case DW_AT_HP_prof_flags: return "DW_AT_HP_prof_flags"; |
| |
| /* One value is shared by the MIPS and HP extensions: */ |
| case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable"; |
| |
| /* 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"; |
| |
| /* PGI (STMicroelectronics) extensions. */ |
| case DW_AT_PGI_lbase: return "DW_AT_PGI_lbase"; |
| case DW_AT_PGI_soffset: return "DW_AT_PGI_soffset"; |
| case DW_AT_PGI_lstride: return "DW_AT_PGI_lstride"; |
| |
| 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, |
| struct dwarf_section * section) |
| { |
| 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, section); |
| 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 if (length >= 0xfffffff0 && length < 0xffffffff) |
| { |
| warn (_("Reserved length value (%lx) found in section %s\n"), length, section->name); |
| return 0; |
| } |
| else |
| section_begin += length + 4; |
| |
| /* Negative values are illegal, they may even cause infinite |
| looping. This can happen if we can't accurately apply |
| relocations to an object file. */ |
| if ((signed long) length <= 0) |
| { |
| warn (_("Corrupt unit length (%lx) found in section %s\n"), length, section->name); |
| return 0; |
| } |
| } |
| |
| 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 = (debug_info *) 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 (_("Contents of the %s section:\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; |
| |
| 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; |
| } |
| |
| if (!do_loc) |
| { |
| printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset); |
| printf (_(" Length: 0x%lx (%s)\n"), compunit.cu_length, |
| initial_length_size == 8 ? "64-bit" : "32-bit"); |
| 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 (cu_offset + compunit.cu_length + initial_length_size |
| > section->size) |
| { |
| warn (_("Debug info is corrupted, length of CU at %lx extends beyond end of section (length = %lx)\n"), |
| cu_offset, compunit.cu_length); |
| break; |
| } |
| tags = hdrptr; |
| start += compunit.cu_length + initial_length_size; |
| |
| if (compunit.cu_version != 2 && compunit.cu_version != 3) |
| { |
| warn (_("CU at offset %lx contains corrupt or unsupported version number: %d.\n"), |
| cu_offset, compunit.cu_version); |
| continue; |
| } |
| |
| free_abbrevs (); |
| |
| /* Process the abbrevs used by this compilation unit. DWARF |
| sections under Mach-O have non-zero addresses. */ |
| if (compunit.cu_abbrev_offset >= debug_displays [abbrev].section.size) |
| warn (_("Debug info is corrupted, abbrev offset (%lx) is larger than abbrev section size (%lx)\n"), |
| (unsigned long) compunit.cu_abbrev_offset, |
| (unsigned long) debug_displays [abbrev].section.size); |
| else |
| process_abbrev_section |
| ((unsigned char *) debug_displays [abbrev].section.start |
| + compunit.cu_abbrev_offset - debug_displays [abbrev].section.address, |
| (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; |
| unsigned long die_offset; |
| abbrev_entry *entry; |
| abbrev_attr *attr; |
| |
| die_offset = tags - section_begin; |
| |
| abbrev_number = read_leb128 (tags, & bytes_read, 0); |
| tags += bytes_read; |
| |
| /* A null DIE marks the end of a list of siblings or it may also be |
| a section padding. */ |
| if (abbrev_number == 0) |
| { |
| /* Check if it can be a section padding for the last CU. */ |
| if (level == 0 && start == end) |
| { |
| unsigned char *chk; |
| |
| for (chk = tags; chk < start; chk++) |
| if (*chk != 0) |
| break; |
| if (chk == start) |
| break; |
| } |
| |
| --level; |
| if (level < 0) |
| { |
| static unsigned num_bogus_warns = 0; |
| |
| if (num_bogus_warns < 3) |
| { |
| warn (_("Bogus end-of-siblings marker detected at offset %lx in .debug_info section\n"), |
| die_offset); |
| num_bogus_warns ++; |
| if (num_bogus_warns == 3) |
| warn (_("Further warnings about bogus end-of-sibling markers suppressed\n")); |
| } |
| } |
| continue; |
| } |
| |
| if (!do_loc) |
| printf (_(" <%d><%lx>: Abbrev Number: %lu"), |
| level, die_offset, abbrev_number); |
| |
| /* 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) |
| { |
| if (!do_loc) |
| { |
| printf ("\n"); |
| fflush (stdout); |
| } |
| warn (_("DIE at offset %lx refers to abbreviation number %lu which does not exist\n"), |
| die_offset, abbrev_number); |
| return 0; |
| } |
| |
| if (!do_loc) |
| printf (_(" (%s)\n"), 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_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) |
| { |
| if (! do_loc) |
| /* Show the offset from where the tag was extracted. */ |
| printf (" <%2lx>", (unsigned long)(tags - section_begin)); |
| |
| 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, section); |
| } |
| |
| 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 have already tried and failed to load the .debug_info |
| section then do not bother to repear the task. */ |
| if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE) |
| return 0; |
| |
| /* 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; |
| |
| num_debug_info_entries = DEBUG_INFO_UNAVAILABLE; |
| return 0; |
| } |
| |
| static int |
| display_debug_lines_raw (struct dwarf_section *section, |
| unsigned char *data, |
| unsigned char *end) |
| { |
| unsigned char *start = section->start; |
| |
| printf (_("Raw dump of debug contents of section %s:\n\n"), |
| section->name); |
| |
| while (data < end) |
| { |
| DWARF2_Internal_LineInfo info; |
| unsigned char *standard_opcodes; |
| unsigned char *end_of_sequence; |
| unsigned char *hdrptr; |
| unsigned long hdroff; |
| int initial_length_size; |
| int offset_size; |
| int i; |
| |
| hdrptr = data; |
| hdroff = hdrptr - start; |
| |
| /* 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 information in section %s appears to be corrupt - the section is too small\n"), |
| section->name); |
| 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; |
| |
| printf (_(" Offset: 0x%lx\n"), hdroff); |
| 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); |
| |
| 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: |
| data += process_extended_line_op (data, info.li_default_is_stmt); |
| 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; |
| } |
| |
| typedef struct |
| { |
| unsigned char *name; |
| unsigned int directory_index; |
| unsigned int modification_date; |
| unsigned int length; |
| } File_Entry; |
| |
| /* Output a decoded representation of the .debug_line section. */ |
| |
| static int |
| display_debug_lines_decoded (struct dwarf_section *section, |
| unsigned char *data, |
| unsigned char *end) |
| { |
| printf (_("Decoded dump of debug contents of section %s:\n\n"), |
| section->name); |
| |
| while (data < end) |
| { |
| /* This loop amounts to one iteration per compilation unit. */ |
| DWARF2_Internal_LineInfo info; |
| unsigned char *standard_opcodes; |
| unsigned char *end_of_sequence; |
| unsigned char *hdrptr; |
| int initial_length_size; |
| int offset_size; |
| int i; |
| File_Entry *file_table = NULL; |
| unsigned char **directory_table = NULL; |
| unsigned int prev_line = 0; |
| |
| hdrptr = data; |
| |
| /* Extract information from the Line Number Program Header. |
| (section 6.2.4 in the Dwarf3 doc). */ |
| |
| /* Get the length of this CU's line number information 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; |
| } |
| |
| /* Get this CU's Line Number Block 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; |
| |
| /* Find the end of this CU's Line Number Information Block. */ |
| end_of_sequence = data + info.li_length + initial_length_size; |
| |
| reset_state_machine (info.li_default_is_stmt); |
| |
| /* Save a pointer to the contents of the Opcodes table. */ |
| standard_opcodes = hdrptr; |
| |
| /* Traverse the Directory table just to count entries. */ |
| data = standard_opcodes + info.li_opcode_base - 1; |
| if (*data != 0) |
| { |
| unsigned int n_directories = 0; |
| unsigned char *ptr_directory_table = data; |
| int i; |
| |
| while (*data != 0) |
| { |
| data += strlen ((char *) data) + 1; |
| n_directories++; |
| } |
| |
| /* Go through the directory table again to save the directories. */ |
| directory_table = (unsigned char **) |
| xmalloc (n_directories * sizeof (unsigned char *)); |
| |
| i = 0; |
| while (*ptr_directory_table != 0) |
| { |
| directory_table[i] = ptr_directory_table; |
| ptr_directory_table += strlen ((char *) ptr_directory_table) + 1; |
| i++; |
| } |
| } |
| /* Skip the NUL at the end of the table. */ |
| data++; |
| |
| /* Traverse the File Name table just to count the entries. */ |
| if (*data != 0) |
| { |
| unsigned int n_files = 0; |
| unsigned char *ptr_file_name_table = data; |
| int i; |
| |
| while (*data != 0) |
| { |
| unsigned int bytes_read; |
| |
| /* Skip Name, directory index, last modification time and length |
| of file. */ |
| data += strlen ((char *) data) + 1; |
| read_leb128 (data, & bytes_read, 0); |
| data += bytes_read; |
| read_leb128 (data, & bytes_read, 0); |
| data += bytes_read; |
| read_leb128 (data, & bytes_read, 0); |
| data += bytes_read; |
| |
| n_files++; |
| } |
| |
| /* Go through the file table again to save the strings. */ |
| file_table = (File_Entry *) xmalloc (n_files * sizeof (File_Entry)); |
| |
| i = 0; |
| while (*ptr_file_name_table != 0) |
| { |
| unsigned int bytes_read; |
| |
| file_table[i].name = ptr_file_name_table; |
| ptr_file_name_table += strlen ((char *) ptr_file_name_table) + 1; |
| |
| /* We are not interested in directory, time or size. */ |
| file_table[i].directory_index = read_leb128 (ptr_file_name_table, |
| & bytes_read, 0); |
| ptr_file_name_table += bytes_read; |
| file_table[i].modification_date = read_leb128 (ptr_file_name_table, |
| & bytes_read, 0); |
| ptr_file_name_table += bytes_read; |
| file_table[i].length = read_leb128 (ptr_file_name_table, & bytes_read, 0); |
| ptr_file_name_table += bytes_read; |
| i++; |
| } |
| i = 0; |
| |
| /* Print the Compilation Unit's name and a header. */ |
| if (directory_table == NULL) |
| { |
| printf (_("CU: %s:\n"), file_table[0].name); |
| printf (_("File name Line number Starting address\n")); |
| } |
| else |
| { |
| if (do_wide || strlen ((char *) directory_table[0]) < 76) |
| { |
| printf (_("CU: %s/%s:\n"), directory_table[0], |
| file_table[0].name); |
| } |
| else |
| { |
| printf (_("%s:\n"), file_table[0].name); |
| } |
| printf (_("File name Line number Starting address\n")); |
| } |
| } |
| |
| /* Skip the NUL at the end of the table. */ |
| data++; |
| |
| /* This loop iterates through the Dwarf Line Number Program. */ |
| while (data < end_of_sequence) |
| { |
| unsigned char op_code; |
| int adv; |
| unsigned long int uladv; |
| unsigned int bytes_read; |
| int is_special_opcode = 0; |
| |
| op_code = *data++; |
| prev_line = state_machine_regs.line; |
| |
| 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; |
| |
| adv = (op_code % info.li_line_range) + info.li_line_base; |
| state_machine_regs.line += adv; |
| is_special_opcode = 1; |
| } |
| else switch (op_code) |
| { |
| case DW_LNS_extended_op: |
| { |
| unsigned int ext_op_code_len; |
| unsigned int bytes_read; |
| unsigned char ext_op_code; |
| unsigned char *op_code_data = data; |
| |
| ext_op_code_len = read_leb128 (op_code_data, &bytes_read, 0); |
| op_code_data += bytes_read; |
| |
| if (ext_op_code_len == 0) |
| { |
| warn (_("badly formed extended line op encountered!\n")); |
| break; |
| } |
| ext_op_code_len += bytes_read; |
| ext_op_code = *op_code_data++; |
| |
| switch (ext_op_code) |
| { |
| case DW_LNE_end_sequence: |
| reset_state_machine (info.li_default_is_stmt); |
| break; |
| case DW_LNE_set_address: |
| state_machine_regs.address = |
| byte_get (op_code_data, ext_op_code_len - bytes_read - 1); |
| break; |
| case DW_LNE_define_file: |
| { |
| unsigned int dir_index = 0; |
| |
| ++state_machine_regs.last_file_entry; |
| op_code_data += strlen ((char *) op_code_data) + 1; |
| dir_index = read_leb128 (op_code_data, & bytes_read, 0); |
| op_code_data += bytes_read; |
| read_leb128 (op_code_data, & bytes_read, 0); |
| op_code_data += bytes_read; |
| read_leb128 (op_code_data, & bytes_read, 0); |
| |
| printf (_("%s:\n"), directory_table[dir_index]); |
| break; |
| } |
| default: |
| printf (_("UNKNOWN: length %d\n"), ext_op_code_len - bytes_read); |
| break; |
| } |
| data += ext_op_code_len; |
| break; |
| } |
| case DW_LNS_copy: |
| 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; |
| break; |
| |
| case DW_LNS_advance_line: |
| adv = read_leb128 (data, & bytes_read, 1); |
| data += bytes_read; |
| state_machine_regs.line += adv; |
| break; |
| |
| case DW_LNS_set_file: |
| adv = read_leb128 (data, & bytes_read, 0); |
| data += bytes_read; |
| state_machine_regs.file = adv; |
| if (file_table[state_machine_regs.file - 1].directory_index == 0) |
| { |
| /* If directory index is 0, that means current directory. */ |
| printf (_("\n./%s:[++]\n"), |
| file_table[state_machine_regs.file - 1].name); |
| } |
| else |
| { |
| /* The directory index starts counting at 1. */ |
| printf (_("\n%s/%s:\n"), |
| directory_table[file_table[state_machine_regs.file - 1].directory_index - 1], |
| file_table[state_machine_regs.file - 1].name); |
| } |
| break; |
| |
| case DW_LNS_set_column: |
| uladv = read_leb128 (data, & bytes_read, 0); |
| data += bytes_read; |
| state_machine_regs.column = uladv; |
| break; |
| |
| case DW_LNS_negate_stmt: |
| adv = state_machine_regs.is_stmt; |
| adv = ! adv; |
| state_machine_regs.is_stmt = adv; |
| break; |
| |
| case DW_LNS_set_basic_block: |
| 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; |
| break; |
| |
| case DW_LNS_fixed_advance_pc: |
| uladv = byte_get (data, 2); |
| data += 2; |
| state_machine_regs.address += uladv; |
| break; |
| |
| case DW_LNS_set_prologue_end: |
| break; |
| |
| case DW_LNS_set_epilogue_begin: |
| 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; |
| } |
| |
| /* Only Special opcodes, DW_LNS_copy and DW_LNE_end_sequence adds a row |
| to the DWARF address/line matrix. */ |
| if ((is_special_opcode) || (op_code == DW_LNE_end_sequence) |
| || (op_code == DW_LNS_copy)) |
| { |
| const unsigned int MAX_FILENAME_LENGTH = 35; |
| char *fileName = (char *)file_table[state_machine_regs.file - 1].name; |
| char *newFileName = NULL; |
| size_t fileNameLength = strlen (fileName); |
| |
| if ((fileNameLength > MAX_FILENAME_LENGTH) && (!do_wide)) |
| { |
| newFileName = (char *) xmalloc (MAX_FILENAME_LENGTH + 1); |
| /* Truncate file name */ |
| strncpy (newFileName, |
| fileName + fileNameLength - MAX_FILENAME_LENGTH, |
| MAX_FILENAME_LENGTH + 1); |
| } |
| else |
| { |
| newFileName = (char *) xmalloc (fileNameLength + 1); |
| strncpy (newFileName, fileName, fileNameLength + 1); |
| } |
| |
| if (!do_wide || (fileNameLength <= MAX_FILENAME_LENGTH)) |
| { |
| printf (_("%-35s %11d %#18lx\n"), newFileName, |
| state_machine_regs.line, state_machine_regs.address); |
| } |
| else |
| { |
| printf (_("%s %11d %#18lx\n"), newFileName, |
| state_machine_regs.line, state_machine_regs.address); |
| } |
| |
| if (op_code == DW_LNE_end_sequence) |
| printf ("\n"); |
| |
| free (newFileName); |
| } |
| } |
| free (file_table); |
| file_table = NULL; |
| free (directory_table); |
| directory_table = NULL; |
| putchar ('\n'); |
| } |
| |
| return 1; |
| } |
| |
| static int |
| display_debug_lines (struct dwarf_section *section, void *file) |
| { |
| unsigned char *data = section->start; |
| unsigned char *end = data + section->size; |
| int retValRaw = 1; |
| int retValDecoded = 1; |
| |
| if (load_debug_info (file) == 0) |
| { |
| warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), |
| section->name); |
| return 0; |
| } |
| |
| if (do_debug_lines == 0) |
| do_debug_lines |= FLAG_DEBUG_LINES_RAW; |
| |
| if (do_debug_lines & FLAG_DEBUG_LINES_RAW) |
| retValRaw = display_debug_lines_raw (section, data, end); |
| |
| if (do_debug_lines & FLAG_DEBUG_LINES_DECODED) |
| retValDecoded = display_debug_lines_decoded (section, data, end); |
| |
| if (!retValRaw || !retValDecoded) |
| return 0; |
| |
| return 1; |
| } |
| |
| static debug_info * |
| find_debug_info_for_offset (unsigned long offset) |
| { |
| unsigned int i; |
| |
| if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE) |
| return NULL; |
| |
| for (i = 0; i < num_debug_info_entries; i++) |
| if (debug_information[i].cu_offset == offset) |
| return debug_information + i; |
| |
| return NULL; |
| } |
| |
| 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; |
| |
| /* It does not matter if this load fails, |
| we test for that later on. */ |
| load_debug_info (file); |
| |
| 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; |
| |
| if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE |
| && num_debug_info_entries > 0 |
| && find_debug_info_for_offset (pubnames.pn_offset) == NULL) |
| warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"), |
| pubnames.pn_offset, section->name); |
| |
| 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: 0x%lx\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 (" %-6lx\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 = (enum dwarf_macinfo_record_type) *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; |
| } |
| |
| if (load_debug_info (file) == 0) |
| { |
| warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), |
| section->name); |
| return 0; |
| } |
| |
| /* Check the order of location list in .debug_info section. If |
| offsets of location lists are in the ascending order, we can |
| use `debug_information' directly. */ |
| for (i = 0; i < num_debug_info_entries; i++) |
| { |
| unsigned int num; |
| |
| 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")); |
| |
| /* DWARF sections under Mach-O have non-zero addresses. */ |
| if (debug_information [first].num_loc_offsets > 0 |
| && debug_information [first].loc_offsets [0] != section->address) |
| 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++) |
| { |
| dwarf_vma begin; |
| dwarf_vma 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]; |
| /* DWARF sections under Mach-O have non-zero addresses. */ |
| offset = debug_information [i].loc_offsets [j] - section->address; |
| 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"), |
| (unsigned long) (start - section_begin), |
| (unsigned long) (next - section_begin)); |
| else if (start > next) |
| warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), |
| (unsigned long) (start - section_begin), |
| (unsigned 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; |
| } |
| |
| /* Note: we use sign extension here in order to be sure that |
| we can detect the -1 escape value. Sign extension into the |
| top 32 bits of a 32-bit address will not affect the values |
| that we display since we always show hex values, and always |
| the bottom 32-bits. */ |
| begin = byte_get_signed (start, pointer_size); |
| start += pointer_size; |
| end = byte_get_signed (start, pointer_size); |
| start += pointer_size; |
| |
| printf (" %8.8lx ", offset); |
| |
| if (begin == 0 && end == 0) |
| { |
| printf (_("<End of list>\n")); |
| break; |
| } |
| |
| /* Check base address specifiers. */ |
| if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) |
| { |
| base_address = end; |
| print_dwarf_vma (begin, pointer_size); |
| print_dwarf_vma (end, pointer_size); |
| printf (_("(base address)\n")); |
| 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; |
| } |
| |
| print_dwarf_vma (begin + base_address, pointer_size); |
| print_dwarf_vma (end + base_address, pointer_size); |
| |
| putchar ('('); |
| need_frame_base = decode_location_expression (start, |
| pointer_size, |
| length, |
| cu_offset, section); |
| 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; |
| } |
| } |
| } |
| |
| if (start < section_end) |
| warn (_("There are %ld unused bytes at the end of section %s\n"), |
| (long) (section_end - start), section->name); |
| putchar ('\n'); |
| 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 (_("Contents of the %s section:\n\n"), section->name); |
| |
| /* It does not matter if this load fails, |
| we test for that later on. */ |
| load_debug_info (file); |
| |
| while (start < end) |
| { |
| unsigned char *hdrptr; |
| DWARF2_Internal_ARange arange; |
| unsigned char *ranges; |
| dwarf_vma length; |
| dwarf_vma address; |
| unsigned char address_size; |
| 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; |
| |
| if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE |
| && num_debug_info_entries > 0 |
| && find_debug_info_for_offset (arange.ar_info_offset) == NULL) |
| warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"), |
| arange.ar_info_offset, section->name); |
| |
| 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: 0x%lx\n"), arange.ar_info_offset); |
| printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size); |
| printf (_(" Segment Size: %d\n"), arange.ar_segment_size); |
| |
| address_size = arange.ar_pointer_size + arange.ar_segment_size; |
| |
| /* The DWARF spec does not require that the address size be a power |
| of two, but we do. This will have to change if we ever encounter |
| an uneven architecture. */ |
| if ((address_size & (address_size - 1)) != 0) |
| { |
| warn (_("Pointer size + Segment size is not a power of two.\n")); |
| break; |
| } |
| |
| if (address_size > 4) |
| printf (_("\n Address Length\n")); |
| else |
| printf (_("\n Address Length\n")); |
| |
| ranges = hdrptr; |
| |
| /* Must pad to an alignment boundary that is twice the address size. */ |
| excess = (hdrptr - start) % (2 * address_size); |
| if (excess) |
| ranges += (2 * address_size) - excess; |
| |
| start += arange.ar_length + initial_length_size; |
| |
| while (ranges + 2 * address_size <= start) |
| { |
| address = byte_get (ranges, address_size); |
| |
| ranges += address_size; |
| |
| length = byte_get (ranges, address_size); |
| |
| ranges += address_size; |
| |
| printf (" "); |
| print_dwarf_vma (address, address_size); |
| print_dwarf_vma (length, address_size); |
| putchar ('\n'); |
| } |
| } |
| |
| printf ("\n"); |
| |
| return 1; |
| } |
| |
| /* Each debug_information[x].range_lists[y] gets this representation for |
| sorting purposes. */ |
| |
| struct range_entry |
| { |
| /* The debug_information[x].range_lists[y] value. */ |
| unsigned long ranges_offset; |
| |
| /* Original debug_information to find parameters of the data. */ |
| debug_info *debug_info_p; |
| }; |
| |
| /* Sort struct range_entry in ascending order of its RANGES_OFFSET. */ |
| |
| static int |
| range_entry_compar (const void *ap, const void *bp) |
| { |
| const struct range_entry *a_re = (const struct range_entry *) ap; |
| const struct range_entry *b_re = (const struct range_entry *) bp; |
| const unsigned long a = a_re->ranges_offset; |
| const unsigned long b = b_re->ranges_offset; |
| |
| return (a > b) - (b > a); |
| } |
| |
| 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, i; |
| struct range_entry *range_entries, *range_entry_fill; |
| |
| bytes = section->size; |
| section_end = start + bytes; |
| |
| if (bytes == 0) |
| { |
| printf (_("\nThe %s section is empty.\n"), section->name); |
| return 0; |
| } |
| |
| if (load_debug_info (file) == 0) |
| { |
| warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), |
| section->name); |
| return 0; |
| } |
| |
| num_range_list = 0; |
| for (i = 0; i < num_debug_info_entries; i++) |
| num_range_list += debug_information [i].num_range_lists; |
| |
| if (num_range_list == 0) |
| error (_("No range lists in .debug_info section!\n")); |
| |
| range_entries = (struct range_entry *) |
| xmalloc (sizeof (*range_entries) * num_range_list); |
| range_entry_fill = range_entries; |
| |
| for (i = 0; i < num_debug_info_entries; i++) |
| { |
| debug_info *debug_info_p = &debug_information[i]; |
| unsigned int j; |
| |
| for (j = 0; j < debug_info_p->num_range_lists; j++) |
| { |
| range_entry_fill->ranges_offset = debug_info_p->range_lists[j]; |
| range_entry_fill->debug_info_p = debug_info_p; |
| range_entry_fill++; |
| } |
| } |
| |
| qsort (range_entries, num_range_list, sizeof (*range_entries), |
| range_entry_compar); |
| |
| /* DWARF sections under Mach-O have non-zero addresses. */ |
| if (range_entries[0].ranges_offset != section->address) |
| warn (_("Range lists in %s section start at 0x%lx\n"), |
| section->name, range_entries[0].ranges_offset); |
| |
| printf (_("Contents of the %s section:\n\n"), section->name); |
| printf (_(" Offset Begin End\n")); |
| |
| for (i = 0; i < num_range_list; i++) |
| { |
| struct range_entry *range_entry = &range_entries[i]; |
| debug_info *debug_info_p = range_entry->debug_info_p; |
| unsigned int pointer_size; |
| unsigned long offset; |
| unsigned char *next; |
| unsigned long base_address; |
| |
| pointer_size = debug_info_p->pointer_size; |
| |
| /* DWARF sections under Mach-O have non-zero addresses. */ |
| offset = range_entry->ranges_offset - section->address; |
| next = section_begin + offset; |
| base_address = debug_info_p->base_address; |
| |
| if (i > 0) |
| { |
| if (start < next) |
| warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), |
| (unsigned long) (start - section_begin), |
| (unsigned long) (next - section_begin), section->name); |
| else if (start > next) |
| warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), |
| (unsigned long) (start - section_begin), |
| (unsigned long) (next - section_begin), section->name); |
| } |
| start = next; |
| |
| while (1) |
| { |
| dwarf_vma begin; |
| dwarf_vma end; |
| |
| /* Note: we use sign extension here in order to be sure that |
| we can detect the -1 escape value. Sign extension into the |
| top 32 bits of a 32-bit address will not affect the values |
| that we display since we always show hex values, and always |
| the bottom 32-bits. */ |
| begin = byte_get_signed (start, pointer_size); |
| start += pointer_size; |
| end = byte_get_signed (start, pointer_size); |
| start += pointer_size; |
| |
| printf (" %8.8lx ", offset); |
| |
| if (begin == 0 && end == 0) |
| { |
| printf (_("<End of list>\n")); |
| break; |
| } |
| |
| /* Check base address specifiers. */ |
| if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) |
| { |
| base_address = end; |
| print_dwarf_vma (begin, pointer_size); |
| print_dwarf_vma (end, pointer_size); |
| printf ("(base address)\n"); |
| continue; |
| } |
| |
| print_dwarf_vma (begin + base_address, pointer_size); |
| print_dwarf_vma (end + base_address, pointer_size); |
| |
| if (begin == end) |
| fputs (_("(start == end)"), stdout); |
| else if (begin > end) |
| fputs (_("(start > end)"), stdout); |
| |
| putchar ('\n'); |
| } |
| } |
| putchar ('\n'); |
| |
| free (range_entries); |
| |
| 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; |
| |
| static const char *const *dwarf_regnames; |
| static unsigned int dwarf_regnames_count; |
| |
| /* A marker for a col_type that means this column was never referenced |
| in the frame info. */ |
| #define DW_CFA_unreferenced (-1) |
| |
| /* Return 0 if not more space is needed, 1 if more space is needed, |
| -1 for invalid reg. */ |
| |
| static int |
| frame_need_space (Frame_Chunk *fc, unsigned int reg) |
| { |
| int prev = fc->ncols; |
| |
| if (reg < (unsigned int) fc->ncols) |
| return 0; |
| |
| if (dwarf_regnames_count |
| && reg > dwarf_regnames_count) |
| return -1; |
| |
| fc->ncols = reg + 1; |
| fc->col_type = (short int *) xcrealloc (fc->col_type, fc->ncols, |
| sizeof (short int)); |
| fc->col_offset = (int *) 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++; |
| } |
| return 1; |
| } |
| |
| static const char *const dwarf_regnames_i386[] = |
| { |
| "eax", "ecx", "edx", "ebx", |
| "esp", "ebp", "esi", "edi", |
| "eip", "eflags", NULL, |
| "st0", "st1", "st2", "st3", |
| "st4", "st5", "st6", "st7", |
| NULL, NULL, |
| "xmm0", "xmm1", "xmm2", "xmm3", |
| "xmm4", "xmm5", "xmm6", "xmm7", |
| "mm0", "mm1", "mm2", "mm3", |
| "mm4", "mm5", "mm6", "mm7", |
| "fcw", "fsw", "mxcsr", |
| "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, |
| "tr", "ldtr" |
| }; |
| |
| static const char *const dwarf_regnames_x86_64[] = |
| { |
| "rax", "rdx", "rcx", "rbx", |
| "rsi", "rdi", "rbp", "rsp", |
| "r8", "r9", "r10", "r11", |
| "r12", "r13", "r14", "r15", |
| "rip", |
| "xmm0", "xmm1", "xmm2", "xmm3", |
| "xmm4", "xmm5", "xmm6", "xmm7", |
| "xmm8", "xmm9", "xmm10", "xmm11", |
| "xmm12", "xmm13", "xmm14", "xmm15", |
| "st0", "st1", "st2", "st3", |
| "st4", "st5", "st6", "st7", |
| "mm0", "mm1", "mm2", "mm3", |
| "mm4", "mm5", "mm6", "mm7", |
| "rflags", |
| "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, |
| "fs.base", "gs.base", NULL, NULL, |
| "tr", "ldtr", |
| "mxcsr", "fcw", "fsw" |
| }; |
| |
| void |
| init_dwarf_regnames (unsigned int e_machine) |
| { |
| switch (e_machine) |
| { |
| case EM_386: |
| case EM_486: |
| dwarf_regnames = dwarf_regnames_i386; |
| dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_i386); |
| break; |
| |
| case EM_X86_64: |
| dwarf_regnames = dwarf_regnames_x86_64; |
| dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static const char * |
| regname (unsigned int regno, int row) |
| { |
| static char reg[64]; |
| if (dwarf_regnames |
| && regno < dwarf_regnames_count |
| && dwarf_regnames [regno] != NULL) |
| { |
| if (row) |
| return dwarf_regnames [regno]; |
| snprintf (reg, sizeof (reg), "r%d (%s)", regno, |
| dwarf_regnames [regno]); |
| } |
| else |
| snprintf (reg, sizeof (reg), "r%d", regno); |
| return reg; |
| } |
| |
| 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) |
| { |
| static const char *loc = " LOC"; |
| |
| *need_col_headers = 0; |
| |
| printf ("%-*s CFA ", eh_addr_size * 2, loc); |
| |
| for (r = 0; r < *max_regs; r++) |
| if (fc->col_type[r] != DW_CFA_unreferenced) |
| { |
| if (r == fc->ra) |
| printf ("ra "); |
| else |
| printf ("%-5s ", regname (r, 1)); |
| } |
| |
| printf ("\n"); |
| } |
| |
| printf ("%0*lx ", eh_addr_size * 2, fc->pc_begin); |
| if (fc->cfa_exp) |
| strcpy (tmp, "exp"); |
| else |
| sprintf (tmp, "%s%+d", regname (fc->cfa_reg, 1), 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_val_offset: |
| sprintf (tmp, "v%+d", fc->col_offset[r]); |
| break; |
| case DW_CFA_register: |
| sprintf (tmp, "%s", regname (fc->col_offset[r], 0)); |
| break; |
| case DW_CFA_expression: |
| strcpy (tmp, "exp"); |
| break; |
| case DW_CFA_val_expression: |
| strcpy (tmp, "vexp"); |
| break; |
| default: |
| strcpy (tmp, "n/a"); |
| break; |
| } |
| printf ("%-5s ", tmp); |
| } |
| } |
| printf ("\n"); |
| } |
| |
| #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; |
| const char *bad_reg = _("bad register: "); |
| |
| printf (_("Contents of the %s section:\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)); |
| continue; |
| } |
| |
| 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; |
| if (block_end > end) |
| { |
| warn ("Invalid length %#08lx in FDE at %#08lx\n", |
| length, (unsigned long)(saved_start - section_start)); |
| block_end = end; |
| } |
| cie_id = byte_get (start, offset_size); start += offset_size; |
| |
| if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID)) |
| { |
| int version; |
| |
| fc = (Frame_Chunk *) 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 = (short int *) xmalloc (sizeof (short int)); |
| fc->col_offset = (int *) 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 %#08lx\n", |
| cie_id, (unsigned long)(saved_start - section_start)); |
| fc->ncols = 0; |
| fc->col_type = (short int *) xmalloc (sizeof (short int)); |
| fc->col_offset = (int *) 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 = (short int *) xcmalloc (fc->ncols, sizeof (short int)); |
| fc->col_offset = (int *) 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) |
| 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 (); |
| if (frame_need_space (fc, opa) >= 0) |
| fc->col_type[opa] = DW_CFA_undefined; |
| break; |
| case DW_CFA_restore: |
| if (frame_need_space (fc, opa) >= 0) |
| 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: |
| case DW_CFA_val_offset: |
| reg = LEB (); LEB (); |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| case DW_CFA_restore_extended: |
| reg = LEB (); |
| frame_need_space (fc, reg); |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| case DW_CFA_undefined: |
| reg = LEB (); |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| case DW_CFA_same_value: |
| reg = LEB (); |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| case DW_CFA_register: |
| reg = LEB (); LEB (); |
| if (frame_need_space (fc, reg) >= 0) |
| 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: |
| case DW_CFA_val_expression: |
| reg = LEB (); |
| tmp = LEB (); |
| start += tmp; |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| case DW_CFA_offset_extended_sf: |
| case DW_CFA_val_offset_sf: |
| reg = LEB (); SLEB (); |
| if (frame_need_space (fc, reg) >= 0) |
| 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 (); |
| if (frame_need_space (fc, reg) >= 0) |
| fc->col_type[reg] = DW_CFA_undefined; |
| break; |
| 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; |
| const char *reg_prefix = ""; |
| |
| 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 (opa >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_offset: %s%s at cfa%+ld\n", |
| reg_prefix, regname (opa, 0), |
| roffs * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[opa] = DW_CFA_offset; |
| fc->col_offset[opa] = roffs * fc->data_factor; |
| } |
| break; |
| |
| case DW_CFA_restore: |
| if (opa >= (unsigned int) cie->ncols |
| || opa >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_restore: %s%s\n", |
| reg_prefix, regname (opa, 0)); |
| if (*reg_prefix == '\0') |
| { |
| 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) |
| 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 (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_offset_extended: %s%s at cfa%+ld\n", |
| reg_prefix, regname (reg, 0), |
| roffs * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_offset; |
| fc->col_offset[reg] = roffs * fc->data_factor; |
| } |
| break; |
| |
| case DW_CFA_val_offset: |
| reg = LEB (); |
| roffs = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_val_offset: %s%s at cfa%+ld\n", |
| reg_prefix, regname (reg, 0), |
| roffs * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_val_offset; |
| fc->col_offset[reg] = roffs * fc->data_factor; |
| } |
| break; |
| |
| case DW_CFA_restore_extended: |
| reg = LEB (); |
| if (reg >= (unsigned int) cie->ncols |
| || reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_restore_extended: %s%s\n", |
| reg_prefix, regname (reg, 0)); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = cie->col_type[reg]; |
| fc->col_offset[reg] = cie->col_offset[reg]; |
| } |
| break; |
| |
| case DW_CFA_undefined: |
| reg = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_undefined: %s%s\n", |
| reg_prefix, regname (reg, 0)); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_undefined; |
| fc->col_offset[reg] = 0; |
| } |
| break; |
| |
| case DW_CFA_same_value: |
| reg = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_same_value: %s%s\n", |
| reg_prefix, regname (reg, 0)); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_same_value; |
| fc->col_offset[reg] = 0; |
| } |
| break; |
| |
| case DW_CFA_register: |
| reg = LEB (); |
| roffs = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| { |
| printf (" DW_CFA_register: %s%s in ", |
| reg_prefix, regname (reg, 0)); |
| puts (regname (roffs, 0)); |
| } |
| if (*reg_prefix == '\0') |
| { |
| 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 = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); |
| rs->ncols = fc->ncols; |
| rs->col_type = (short int *) xcmalloc (rs->ncols, |
| sizeof (short int)); |
| rs->col_offset = (int *) 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: %s ofs %d\n", |
| regname (fc->cfa_reg, 0), 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_register: %s\n", |
| regname (fc->cfa_reg, 0)); |
| 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, |
| section); |
| printf (")\n"); |
| } |
| fc->cfa_exp = 1; |
| start += ul; |
| break; |
| |
| case DW_CFA_expression: |
| reg = LEB (); |
| ul = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| { |
| printf (" DW_CFA_expression: %s%s (", |
| reg_prefix, regname (reg, 0)); |
| decode_location_expression (start, eh_addr_size, |
| ul, 0, section); |
| printf (")\n"); |
| } |
| if (*reg_prefix == '\0') |
| fc->col_type[reg] = DW_CFA_expression; |
| start += ul; |
| break; |
| |
| case DW_CFA_val_expression: |
| reg = LEB (); |
| ul = LEB (); |
| if (reg >= (unsigned int) fc->ncols) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| { |
| printf (" DW_CFA_val_expression: %s%s (", |
| reg_prefix, regname (reg, 0)); |
| decode_location_expression (start, eh_addr_size, ul, 0, |
| section); |
| printf (")\n"); |
| } |
| if (*reg_prefix == '\0') |
| fc->col_type[reg] = DW_CFA_val_expression; |
| start += ul; |
| break; |
| |
| case DW_CFA_offset_extended_sf: |
| reg = LEB (); |
| l = SLEB (); |
| if (frame_need_space (fc, reg) < 0) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_offset_extended_sf: %s%s at cfa%+ld\n", |
| reg_prefix, regname (reg, 0), |
| l * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_offset; |
| fc->col_offset[reg] = l * fc->data_factor; |
| } |
| break; |
| |
| case DW_CFA_val_offset_sf: |
| reg = LEB (); |
| l = SLEB (); |
| if (frame_need_space (fc, reg) < 0) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_val_offset_sf: %s%s at cfa%+ld\n", |
| reg_prefix, regname (reg, 0), |
| l * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_val_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: %s ofs %d\n", |
| regname (fc->cfa_reg, 0), 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 (); |
| if (frame_need_space (fc, reg) < 0) |
| reg_prefix = bad_reg; |
| if (! do_debug_frames_interp || *reg_prefix != '\0') |
| printf (" DW_CFA_GNU_negative_offset_extended: %s%s at cfa%+ld\n", |
| reg_prefix, regname (reg, 0), |
| l * fc->data_factor); |
| if (*reg_prefix == '\0') |
| { |
| fc->col_type[reg] = DW_CFA_offset; |
| fc->col_offset[reg] = l * fc->data_factor; |
| } |
| break; |
| |
| default: |
| if (op >= DW_CFA_lo_user && op <= DW_CFA_hi_user) |
| printf (_(" DW_CFA_??? (User defined call frame op: %#x)\n"), op); |
| else |
| warn (_("unsupported or unknown Dwarf Call Frame Instruction number: %#x\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) |
| { |
| unsigned int i; |
| |
| free_abbrevs (); |
| |
| for (i = 0; i < max; i++) |
| free_debug_section ((enum dwarf_section_display_enum) i); |
| |
| if (debug_information != NULL) |
| { |
| if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE) |
| { |
| 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; |
| } |
| } |
| |
| void |
| dwarf_select_sections_by_names (const char *names) |
| { |
| typedef struct |
| { |
| const char * option; |
| int * variable; |
| int val; |
| } |
| debug_dump_long_opts; |
| |
| static const debug_dump_long_opts opts_table [] = |
| { |
| /* Please keep this table alpha- sorted. */ |
| { "Ranges", & do_debug_ranges, 1 }, |
| { "abbrev", & do_debug_abbrevs, 1 }, |
| { "aranges", & do_debug_aranges, 1 }, |
| { "frames", & do_debug_frames, 1 }, |
| { "frames-interp", & do_debug_frames_interp, 1 }, |
| { "info", & do_debug_info, 1 }, |
| { "line", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, /* For backwards compatibility. */ |
| { "rawline", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, |
| { "decodedline", & do_debug_lines, FLAG_DEBUG_LINES_DECODED }, |
| { "loc", & do_debug_loc, 1 }, |
| { "macro", & do_debug_macinfo, 1 }, |
| { "pubnames", & do_debug_pubnames, 1 }, |
| /* This entry is for compatability |
| with earlier versions of readelf. */ |
| { "ranges", & do_debug_aranges, 1 }, |
| { "str", & do_debug_str, 1 }, |
| { NULL, NULL, 0 } |
| }; |
| |
| const char *p; |
| |
| p = names; |
| while (*p) |
| { |
| const debug_dump_long_opts * entry; |
| |
| for (entry = opts_table; entry->option; entry++) |
| { |
| size_t len = strlen (entry->option); |
| |
| if (strncmp (p, entry->option, len) == 0 |
| && (p[len] == ',' || p[len] == '\0')) |
| { |
| * entry->variable |= entry->val; |
| |
| /* The --debug-dump=frames-interp option also |
| enables the --debug-dump=frames option. */ |
| if (do_debug_frames_interp) |
| do_debug_frames = 1; |
| |
| p += len; |
| break; |
| } |
| } |
| |
| if (entry->option == NULL) |
| { |
| warn (_("Unrecognized debug option '%s'\n"), p); |
| p = strchr (p, ','); |
| if (p == NULL) |
| break; |
| } |
| |
| if (*p == ',') |
| p++; |
| } |
| } |
| |
| void |
| dwarf_select_sections_by_letters (const char *letters) |
| { |
| unsigned int index = 0; |
| |
| while (letters[index]) |
| switch (letters[index++]) |
| { |
| case 'i': |
| do_debug_info = 1; |
| break; |
| |
| case 'a': |
| do_debug_abbrevs = 1; |
| break; |
| |
| case 'l': |
| do_debug_lines |= FLAG_DEBUG_LINES_RAW; |
| break; |
| |
| case 'L': |
| do_debug_lines |= FLAG_DEBUG_LINES_DECODED; |
| break; |
| |
| case 'p': |
| do_debug_pubnames = 1; |
| break; |
| |
| case 'r': |
| do_debug_aranges = 1; |
| break; |
| |
| case 'R': |
| do_debug_ranges = 1; |
| break; |
| |
| case 'F': |
| do_debug_frames_interp = 1; |
| case 'f': |
| do_debug_frames = 1; |
| break; |
| |
| case 'm': |
| do_debug_macinfo = 1; |
| break; |
| |
| case 's': |
| do_debug_str = 1; |
| break; |
| |
| case 'o': |
| do_debug_loc = 1; |
| break; |
| |
| default: |
| warn (_("Unrecognized debug option '%s'\n"), optarg); |
| break; |
| } |
| } |
| |
| void |
| dwarf_select_sections_all (void) |
| { |
| do_debug_info = 1; |
| do_debug_abbrevs = 1; |
| do_debug_lines = FLAG_DEBUG_LINES_RAW; |
| do_debug_pubnames = 1; |
| do_debug_aranges = 1; |
| do_debug_ranges = 1; |
| do_debug_frames = 1; |
| do_debug_macinfo = 1; |
| do_debug_str = 1; |
| do_debug_loc = 1; |
| } |
| |
| struct dwarf_section_display debug_displays[] = |
| { |
| { { ".debug_abbrev", ".zdebug_abbrev", NULL, NULL, 0, 0 }, |
| display_debug_abbrev, &do_debug_abbrevs, 0 }, |
| { { ".debug_aranges", ".zdebug_aranges", NULL, NULL, 0, 0 }, |
| display_debug_aranges, &do_debug_aranges, 1 }, |
| { { ".debug_frame", ".zdebug_frame", NULL, NULL, 0, 0 }, |
| display_debug_frames, &do_debug_frames, 1 }, |
| { { ".debug_info", ".zdebug_info", NULL, NULL, 0, 0 }, |
| display_debug_info, &do_debug_info, 1 }, |
| { { ".debug_line", ".zdebug_line", NULL, NULL, 0, 0 }, |
| display_debug_lines, &do_debug_lines, 1 }, |
| { { ".debug_pubnames", ".zdebug_pubnames", NULL, NULL, 0, 0 }, |
| display_debug_pubnames, &do_debug_pubnames, 0 }, |
| { { ".eh_frame", "", NULL, NULL, 0, 0 }, |
| display_debug_frames, &do_debug_frames, 1 }, |
| { { ".debug_macinfo", ".zdebug_macinfo", NULL, NULL, 0, 0 }, |
| display_debug_macinfo, &do_debug_macinfo, 0 }, |
| { { ".debug_str", ".zdebug_str", NULL, NULL, 0, 0 }, |
| display_debug_str, &do_debug_str, 0 }, |
| { { ".debug_loc", ".zdebug_loc", NULL, NULL, 0, 0 }, |
| display_debug_loc, &do_debug_loc, 1 }, |
| { { ".debug_pubtypes", ".zdebug_pubtypes", NULL, NULL, 0, 0 }, |
| display_debug_pubnames, &do_debug_pubnames, 0 }, |
| { { ".debug_ranges", ".zdebug_ranges", NULL, NULL, 0, 0 }, |
| display_debug_ranges, &do_debug_ranges, 1 }, |
| { { ".debug_static_func", ".zdebug_static_func", NULL, NULL, 0, 0 }, |
| display_debug_not_supported, NULL, 0 }, |
| { { ".debug_static_vars", ".zdebug_static_vars", NULL, NULL, 0, 0 }, |
| display_debug_not_supported, NULL, 0 }, |
| { { ".debug_types", ".zdebug_types", NULL, NULL, 0, 0 }, |
| display_debug_not_supported, NULL, 0 }, |
| { { ".debug_weaknames", ".zdebug_weaknames", NULL, NULL, 0, 0 }, |
| display_debug_not_supported, NULL, 0 } |
| }; |