X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=binutils%2Fdwarf.c;h=c3dc814204f6589124423431a4023c3e90610365;hb=b68a20d6675f1360ea4db50a9835c073675b9889;hp=506fa4e47b3ba42917aff718a795d3d077c50308;hpb=cecf136e77cbd7cbe69148c91a08545d4bbbb162;p=deliverable%2Fbinutils-gdb.git diff --git a/binutils/dwarf.c b/binutils/dwarf.c index 506fa4e47b..c3dc814204 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -1,6 +1,5 @@ /* dwarf.c -- display DWARF contents of a BFD binary file - Copyright 2005, 2006, 2007, 2008 - Free Software Foundation, Inc. + Copyright (C) 2005-2015 Free Software Foundation, Inc. This file is part of GNU Binutils. @@ -22,10 +21,15 @@ #include "sysdep.h" #include "libiberty.h" #include "bfd.h" +#include "bfd_stdint.h" #include "bucomm.h" +#include "elfcomm.h" #include "elf/common.h" -#include "elf/dwarf2.h" +#include "dwarf2.h" #include "dwarf.h" +#include "gdb/gdb-index.h" + +static const char *regname (unsigned int regno, int row); static int have_frame_base; static int need_base_address; @@ -34,17 +38,19 @@ static unsigned int last_pointer_size = 0; static int warned_about_missing_comp_units = FALSE; static unsigned int num_debug_info_entries = 0; +static unsigned int alloc_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; +unsigned int eh_addr_size; int do_debug_info; int do_debug_abbrevs; int do_debug_lines; int do_debug_pubnames; +int do_debug_pubtypes; int do_debug_aranges; int do_debug_ranges; int do_debug_frames; @@ -52,179 +58,339 @@ int do_debug_frames_interp; int do_debug_macinfo; int do_debug_str; int do_debug_loc; +int do_gdb_index; +int do_trace_info; +int do_trace_abbrevs; +int do_trace_aranges; +int do_debug_addr; +int do_debug_cu_index; +int do_wide; + +int dwarf_cutoff_level = -1; +unsigned long dwarf_start_die; + +int dwarf_check = 0; + +/* Collection of CU/TU section sets from .debug_cu_index and .debug_tu_index + sections. For version 1 package files, each set is stored in SHNDX_POOL + as a zero-terminated list of section indexes comprising one set of debug + sections from a .dwo file. */ + +static int cu_tu_indexes_read = 0; +static unsigned int *shndx_pool = NULL; +static unsigned int shndx_pool_size = 0; +static unsigned int shndx_pool_used = 0; + +/* For version 2 package files, each set contains an array of section offsets + and an array of section sizes, giving the offset and size of the + contribution from a CU or TU within one of the debug sections. + When displaying debug info from a package file, we need to use these + tables to locate the corresponding contributions to each section. */ + +struct cu_tu_set +{ + uint64_t signature; + dwarf_vma section_offsets[DW_SECT_MAX]; + size_t section_sizes[DW_SECT_MAX]; +}; -dwarf_vma (*byte_get) (unsigned char *, int); +static int cu_count = 0; +static int tu_count = 0; +static struct cu_tu_set *cu_sets = NULL; +static struct cu_tu_set *tu_sets = NULL; -dwarf_vma -byte_get_little_endian (unsigned char *field, int size) +static void load_cu_tu_indexes (void *file); + +/* Values for do_debug_lines. */ +#define FLAG_DEBUG_LINES_RAW 1 +#define FLAG_DEBUG_LINES_DECODED 2 + +static unsigned int +size_of_encoded_value (int encoding) { - switch (size) + switch (encoding & 0x7) { - case 1: - return *field; - - case 2: - return ((unsigned int) (field[0])) - | (((unsigned int) (field[1])) << 8); - - case 4: - return ((unsigned long) (field[0])) - | (((unsigned long) (field[1])) << 8) - | (((unsigned long) (field[2])) << 16) - | (((unsigned long) (field[3])) << 24); - - case 8: - if (sizeof (dwarf_vma) == 8) - return ((dwarf_vma) (field[0])) - | (((dwarf_vma) (field[1])) << 8) - | (((dwarf_vma) (field[2])) << 16) - | (((dwarf_vma) (field[3])) << 24) - | (((dwarf_vma) (field[4])) << 32) - | (((dwarf_vma) (field[5])) << 40) - | (((dwarf_vma) (field[6])) << 48) - | (((dwarf_vma) (field[7])) << 56); - else if (sizeof (dwarf_vma) == 4) - /* We want to extract data from an 8 byte wide field and - place it into a 4 byte wide field. Since this is a little - endian source we can just use the 4 byte extraction code. */ - return ((unsigned long) (field[0])) - | (((unsigned long) (field[1])) << 8) - | (((unsigned long) (field[2])) << 16) - | (((unsigned long) (field[3])) << 24); - - default: - error (_("Unhandled data length: %d\n"), size); - abort (); + default: /* ??? */ + case 0: return eh_addr_size; + case 2: return 2; + case 3: return 4; + case 4: return 8; } } -dwarf_vma -byte_get_big_endian (unsigned char *field, int size) +static dwarf_vma +get_encoded_value (unsigned char **pdata, + int encoding, + struct dwarf_section *section, + unsigned char * end) { - switch (size) + unsigned char * data = * pdata; + unsigned int size = size_of_encoded_value (encoding); + dwarf_vma val; + + if (data + size >= end) { - case 1: - return *field; - - case 2: - return ((unsigned int) (field[1])) | (((int) (field[0])) << 8); - - case 4: - return ((unsigned long) (field[3])) - | (((unsigned long) (field[2])) << 8) - | (((unsigned long) (field[1])) << 16) - | (((unsigned long) (field[0])) << 24); - - case 8: - if (sizeof (dwarf_vma) == 8) - return ((dwarf_vma) (field[7])) - | (((dwarf_vma) (field[6])) << 8) - | (((dwarf_vma) (field[5])) << 16) - | (((dwarf_vma) (field[4])) << 24) - | (((dwarf_vma) (field[3])) << 32) - | (((dwarf_vma) (field[2])) << 40) - | (((dwarf_vma) (field[1])) << 48) - | (((dwarf_vma) (field[0])) << 56); - else if (sizeof (dwarf_vma) == 4) - { - /* Although we are extracing data from an 8 byte wide field, - we are returning only 4 bytes of data. */ - field += 4; - return ((unsigned long) (field[3])) - | (((unsigned long) (field[2])) << 8) - | (((unsigned long) (field[1])) << 16) - | (((unsigned long) (field[0])) << 24); - } + warn (_("Encoded value extends past end of section\n")); + * pdata = end; + return 0; + } - default: - error (_("Unhandled data length: %d\n"), size); - abort (); + /* PR 17512: file: 002-829853-0.004. */ + if (size > 8) + { + warn (_("Encoded size of %d is too large to read\n"), size); + * pdata = end; + return 0; + } + + /* PR 17512: file: 1085-5603-0.004. */ + if (size == 0) + { + warn (_("Encoded size of 0 is too small to read\n")); + * pdata = end; + return 0; } + + if (encoding & DW_EH_PE_signed) + val = byte_get_signed (data, size); + else + val = byte_get (data, size); + + if ((encoding & 0x70) == DW_EH_PE_pcrel) + val += section->address + (data - section->start); + + * pdata = data + size; + return val; } -static dwarf_vma -byte_get_signed (unsigned char *field, int size) -{ - dwarf_vma x = byte_get (field, size); +#if defined HAVE_LONG_LONG && SIZEOF_LONG_LONG > SIZEOF_LONG +# ifndef __MINGW32__ +# define DWARF_VMA_FMT "ll" +# define DWARF_VMA_FMT_LONG "%16.16llx" +# else +# define DWARF_VMA_FMT "I64" +# define DWARF_VMA_FMT_LONG "%016I64x" +# endif +#else +# define DWARF_VMA_FMT "l" +# define DWARF_VMA_FMT_LONG "%16.16lx" +#endif + +/* Convert a dwarf vma value into a string. Returns a pointer to a static + buffer containing the converted VALUE. The value is converted according + to the printf formating character FMTCH. If NUM_BYTES is non-zero then + it specifies the maximum number of bytes to be displayed in the converted + value and FMTCH is ignored - hex is always used. */ - switch (size) +static const char * +dwarf_vmatoa_1 (const char *fmtch, dwarf_vma value, unsigned num_bytes) +{ + /* As dwarf_vmatoa is used more then once in a printf call + for output, we are cycling through an fixed array of pointers + for return address. */ + static int buf_pos = 0; + static struct dwarf_vmatoa_buf + { + char place[64]; + } buf[16]; + char *ret; + + ret = buf[buf_pos++].place; + buf_pos %= ARRAY_SIZE (buf); + + if (num_bytes) { - case 1: - return (x ^ 0x80) - 0x80; - case 2: - return (x ^ 0x8000) - 0x8000; - case 4: - return (x ^ 0x80000000) - 0x80000000; - case 8: - return x; - default: - abort (); + /* 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. */ + snprintf (ret, sizeof (buf[0].place), DWARF_VMA_FMT_LONG, value); + if (num_bytes > 8) + num_bytes = 8; + return ret + (16 - 2 * num_bytes); + } + else + { + char fmt[32]; + + sprintf (fmt, "%%%s%s", DWARF_VMA_FMT, fmtch); + snprintf (ret, sizeof (buf[0].place), fmt, value); + return ret; } } +static inline const char * +dwarf_vmatoa (const char * fmtch, dwarf_vma value) +{ + return dwarf_vmatoa_1 (fmtch, value, 0); +} + /* 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. */ + hexadecimal format, followed by a space. The length of the VALUE (and + hence the precision displayed) is determined by the NUM_BYTES parameter. */ static void -print_dwarf_vma (dwarf_vma val, unsigned byte_size) +print_dwarf_vma (dwarf_vma value, unsigned num_bytes) { - 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 + printf ("%s ", dwarf_vmatoa_1 (NULL, value, num_bytes)); +} + +/* Format a 64-bit value, given as two 32-bit values, in hex. + For reentrancy, this uses a buffer provided by the caller. */ - printf (buff + (byte_size == 4 ? 8 : 0)); +static const char * +dwarf_vmatoa64 (dwarf_vma hvalue, dwarf_vma lvalue, char *buf, + unsigned int buf_len) +{ + int len = 0; + + if (hvalue == 0) + snprintf (buf, buf_len, "%" DWARF_VMA_FMT "x", lvalue); + else + { + len = snprintf (buf, buf_len, "%" DWARF_VMA_FMT "x", hvalue); + snprintf (buf + len, buf_len - len, + "%08" DWARF_VMA_FMT "x", lvalue); + } + + return buf; } -static unsigned long int -read_leb128 (unsigned char *data, unsigned int *length_return, int sign) +/* Read in a LEB128 encoded value starting at address DATA. + If SIGN is true, return a signed LEB128 value. + If LENGTH_RETURN is not NULL, return in it the number of bytes read. + No bytes will be read at address END or beyond. */ + +dwarf_vma +read_leb128 (unsigned char *data, + unsigned int *length_return, + bfd_boolean sign, + const unsigned char * const end) { - unsigned long int result = 0; + dwarf_vma result = 0; unsigned int num_read = 0; unsigned int shift = 0; - unsigned char byte; + unsigned char byte = 0; - do + while (data < end) { byte = *data++; num_read++; - result |= ((unsigned long int) (byte & 0x7f)) << shift; + result |= ((dwarf_vma) (byte & 0x7f)) << shift; shift += 7; + if ((byte & 0x80) == 0) + break; + /* PR 17512: file: 0ca183b8. + FIXME: Should we signal this error somehow ? */ + if (shift >= sizeof (result) * 8) + break; } - while (byte & 0x80); if (length_return != NULL) *length_return = num_read; if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) - result |= -1L << shift; + result |= (dwarf_vma) -1 << shift; return result; } +/* Create a signed version to avoid painful typecasts. */ +static inline dwarf_signed_vma +read_sleb128 (unsigned char * data, + unsigned int * length_return, + const unsigned char * const end) +{ + return (dwarf_signed_vma) read_leb128 (data, length_return, TRUE, end); +} + +static inline dwarf_vma +read_uleb128 (unsigned char * data, + unsigned int * length_return, + const unsigned char * const end) +{ + return read_leb128 (data, length_return, FALSE, end); +} + +#define SAFE_BYTE_GET(VAL, PTR, AMOUNT, END) \ + do \ + { \ + int dummy [sizeof (VAL) < (AMOUNT) ? -1 : 1] ATTRIBUTE_UNUSED ; \ + unsigned int amount = (AMOUNT); \ + if (((PTR) + amount) >= (END)) \ + { \ + if ((PTR) < (END)) \ + amount = (END) - (PTR); \ + else \ + amount = 0; \ + } \ + if (amount == 0 || amount > 8) \ + VAL = 0; \ + else \ + VAL = byte_get ((PTR), amount); \ + } \ + while (0) + +#define SAFE_BYTE_GET_AND_INC(VAL, PTR, AMOUNT, END) \ + do \ + { \ + SAFE_BYTE_GET (VAL, PTR, AMOUNT, END); \ + PTR += AMOUNT; \ + } \ + while (0) + +#define SAFE_SIGNED_BYTE_GET(VAL, PTR, AMOUNT, END) \ + do \ + { \ + unsigned int amount = (AMOUNT); \ + if (((PTR) + amount) >= (END)) \ + { \ + if ((PTR) < (END)) \ + amount = (END) - (PTR); \ + else \ + amount = 0; \ + } \ + if (amount) \ + VAL = byte_get_signed ((PTR), amount); \ + else \ + VAL = 0; \ + } \ + while (0) + +#define SAFE_SIGNED_BYTE_GET_AND_INC(VAL, PTR, AMOUNT, END) \ + do \ + { \ + SAFE_SIGNED_BYTE_GET (VAL, PTR, AMOUNT, END); \ + PTR += AMOUNT; \ + } \ + while (0) + +#define SAFE_BYTE_GET64(PTR, HIGH, LOW, END) \ + do \ + { \ + if (((PTR) + 8) <= (END)) \ + { \ + byte_get_64 ((PTR), (HIGH), (LOW)); \ + } \ + else \ + { \ + * (LOW) = * (HIGH) = 0; \ + } \ + } \ + while (0) + typedef struct State_Machine_Registers { - unsigned long address; + dwarf_vma address; unsigned int file; unsigned int line; unsigned int column; int is_stmt; int basic_block; - int end_sequence; + unsigned char op_index; + unsigned char end_sequence; /* This variable hold the number of the last entry seen in the File Table. */ unsigned int last_file_entry; @@ -236,6 +402,7 @@ static void reset_state_machine (int is_stmt) { state_machine_regs.address = 0; + state_machine_regs.op_index = 0; state_machine_regs.file = 1; state_machine_regs.line = 1; state_machine_regs.column = 0; @@ -249,20 +416,23 @@ reset_state_machine (int is_stmt) Returns the number of bytes read. */ static int -process_extended_line_op (unsigned char *data, int is_stmt) +process_extended_line_op (unsigned char * data, + int is_stmt, + unsigned char * end) { unsigned char op_code; unsigned int bytes_read; unsigned int len; unsigned char *name; - unsigned long adr; + unsigned char *orig_data = data; + dwarf_vma adr; - len = read_leb128 (data, & bytes_read, 0); + len = read_uleb128 (data, & bytes_read, end); data += bytes_read; - if (len == 0) + if (len == 0 || data == end || len > (uintptr_t) (end - data)) { - warn (_("badly formed extended line op encountered!\n")); + warn (_("Badly formed extended line op encountered!\n")); return bytes_read; } @@ -279,92 +449,223 @@ process_extended_line_op (unsigned char *data, int is_stmt) break; case DW_LNE_set_address: - adr = byte_get (data, len - bytes_read - 1); - printf (_("set Address to 0x%lx\n"), adr); + /* PR 17512: file: 002-100480-0.004. */ + if (len - bytes_read - 1 > 8) + { + warn (_("Length (%d) of DW_LNE_set_address op is too long\n"), + len - bytes_read - 1); + adr = 0; + } + else + SAFE_BYTE_GET (adr, data, len - bytes_read - 1, end); + printf (_("set Address to 0x%s\n"), dwarf_vmatoa ("x", adr)); state_machine_regs.address = adr; + state_machine_regs.op_index = 0; break; case DW_LNE_define_file: - printf (_(" define new File Table entry\n")); + printf (_("define new File Table entry\n")); printf (_(" Entry\tDir\tTime\tSize\tName\n")); + printf (" %d\t", ++state_machine_regs.last_file_entry); - 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 += strnlen ((char *) data, end - data) + 1; + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); data += bytes_read; - printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); data += bytes_read; - printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); - printf (_("%s\n\n"), name); + printf ("%s\n\n", name); + + if (((unsigned int) (data - orig_data) != len) || data == end) + warn (_("DW_LNE_define_file: Bad opcode length\n")); + break; + + case DW_LNE_set_discriminator: + printf (_("set Discriminator to %s\n"), + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); break; /* HP extensions. */ case DW_LNE_HP_negate_is_UV_update: - printf ("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"); + printf ("DW_LNE_HP_push_context\n"); break; case DW_LNE_HP_pop_context: - printf ("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"); + printf ("DW_LNE_HP_set_file_line_column\n"); break; case DW_LNE_HP_set_routine_name: - printf ("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"); + printf ("DW_LNE_HP_set_sequence\n"); break; case DW_LNE_HP_negate_post_semantics: - printf ("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"); + 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"); + printf ("DW_LNE_HP_negate_front_end_logical\n"); break; case DW_LNE_HP_define_proc: - printf ("DW_LNE_HP_define_proc"); + printf ("DW_LNE_HP_define_proc\n"); + break; + case DW_LNE_HP_source_file_correlation: + { + unsigned char *edata = data + len - bytes_read - 1; + + printf ("DW_LNE_HP_source_file_correlation\n"); + + while (data < edata) + { + unsigned int opc; + + opc = read_uleb128 (data, & bytes_read, edata); + data += bytes_read; + + switch (opc) + { + case DW_LNE_HP_SFC_formfeed: + printf (" DW_LNE_HP_SFC_formfeed\n"); + break; + case DW_LNE_HP_SFC_set_listing_line: + printf (" DW_LNE_HP_SFC_set_listing_line (%s)\n", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + break; + case DW_LNE_HP_SFC_associate: + printf (" DW_LNE_HP_SFC_associate "); + printf ("(%s", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + printf (",%s", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + printf (",%s)\n", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + break; + default: + printf (_(" UNKNOWN DW_LNE_HP_SFC opcode (%u)\n"), opc); + data = edata; + break; + } + } + } 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); + { + unsigned int rlen = len - bytes_read - 1; + + 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: ")); + else + printf (_("UNKNOWN: ")); + printf (_("length %d ["), rlen); + for (; rlen; rlen--) + printf (" %02x", *data++); + printf ("]\n"); + } break; } return len; } -static const char * -fetch_indirect_string (unsigned long offset) +static const unsigned char * +fetch_indirect_string (dwarf_vma offset) { struct dwarf_section *section = &debug_displays [str].section; if (section->start == NULL) - return _(""); + return (const unsigned char *) _(""); - /* 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 _(""); + warn (_("DW_FORM_strp offset too big: %s\n"), + dwarf_vmatoa ("x", offset)); + return (const unsigned char *) _(""); + } + + return (const unsigned char *) section->start + offset; +} + +static const char * +fetch_indexed_string (dwarf_vma idx, struct cu_tu_set *this_set, + dwarf_vma offset_size, int dwo) +{ + enum dwarf_section_display_enum str_sec_idx = dwo ? str_dwo : str; + enum dwarf_section_display_enum idx_sec_idx = dwo ? str_index_dwo : str_index; + struct dwarf_section *index_section = &debug_displays [idx_sec_idx].section; + struct dwarf_section *str_section = &debug_displays [str_sec_idx].section; + dwarf_vma index_offset = idx * offset_size; + dwarf_vma str_offset; + + if (index_section->start == NULL) + return (dwo ? _("") + : _("")); + + if (this_set != NULL) + index_offset += this_set->section_offsets [DW_SECT_STR_OFFSETS]; + if (index_offset > index_section->size) + { + warn (_("DW_FORM_GNU_str_index offset too big: %s\n"), + dwarf_vmatoa ("x", index_offset)); + return _(""); + } + + if (str_section->start == NULL) + return (dwo ? _("") + : _("")); + + str_offset = byte_get (index_section->start + index_offset, offset_size); + str_offset -= str_section->address; + if (str_offset > str_section->size) + { + warn (_("DW_FORM_GNU_str_index indirect offset too big: %s\n"), + dwarf_vmatoa ("x", str_offset)); + return _(""); + } + + return (const char *) str_section->start + str_offset; +} + +static const char * +fetch_indexed_value (dwarf_vma offset, dwarf_vma bytes) +{ + struct dwarf_section *section = &debug_displays [debug_addr].section; + + if (section->start == NULL) + return (_("")); + + if (offset + bytes > section->size) + { + warn (_("Offset into section %s too big: %s\n"), + section->name, dwarf_vmatoa ("x", offset)); + return ""; } - return (const char *) section->start + offset; + return dwarf_vmatoa ("x", byte_get (section->start + offset, bytes)); } + /* FIXME: There are better and more efficient ways to handle these structures. For now though, I just want something that is simple to implement. */ @@ -393,23 +694,23 @@ static abbrev_entry *last_abbrev = NULL; static void free_abbrevs (void) { - abbrev_entry *abbrev; + abbrev_entry *abbrv; - for (abbrev = first_abbrev; abbrev;) + for (abbrv = first_abbrev; abbrv;) { - abbrev_entry *next = abbrev->next; + abbrev_entry *next_abbrev = abbrv->next; abbrev_attr *attr; - for (attr = abbrev->first_attr; attr;) + for (attr = abbrv->first_attr; attr;) { - abbrev_attr *next = attr->next; + abbrev_attr *next_attr = attr->next; free (attr); - attr = next; + attr = next_attr; } - free (abbrev); - abbrev = next; + free (abbrv); + abbrv = next_abbrev; } last_abbrev = first_abbrev = NULL; @@ -420,8 +721,7 @@ add_abbrev (unsigned long number, unsigned long tag, int children) { abbrev_entry *entry; - entry = malloc (sizeof (*entry)); - + entry = (abbrev_entry *) malloc (sizeof (*entry)); if (entry == NULL) /* ugg */ return; @@ -446,8 +746,7 @@ add_abbrev_attr (unsigned long attribute, unsigned long form) { abbrev_attr *attr; - attr = malloc (sizeof (*attr)); - + attr = (abbrev_attr *) malloc (sizeof (*attr)); if (attr == NULL) /* ugg */ return; @@ -483,17 +782,21 @@ process_abbrev_section (unsigned char *start, unsigned char *end) unsigned long attribute; int children; - entry = read_leb128 (start, & bytes_read, 0); + entry = read_uleb128 (start, & bytes_read, end); 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 (start == end) + return NULL; if (entry == 0) - return start == end ? NULL : start; + return start; - tag = read_leb128 (start, & bytes_read, 0); + tag = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + return NULL; children = *start++; @@ -503,141 +806,76 @@ process_abbrev_section (unsigned char *start, unsigned char *end) { unsigned long form; - attribute = read_leb128 (start, & bytes_read, 0); + attribute = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + break; - form = read_leb128 (start, & bytes_read, 0); + form = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + break; - if (attribute != 0) - add_abbrev_attr (attribute, form); + add_abbrev_attr (attribute, form); } while (attribute != 0); } + /* Report the missing single zero which ends the section. */ + error (_(".debug_abbrev section not zero terminated\n")); + return NULL; } -static char * +static const char * get_TAG_name (unsigned long tag) { - switch (tag) + const char *name = get_DW_TAG_name ((unsigned int)tag); + + if (name == NULL) { - 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]; + static char buffer[100]; - snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag); - return buffer; - } + snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag); + return buffer; } + + return name; } -static char * +static const char * get_FORM_name (unsigned long form) { - switch (form) + const char *name; + + if (form == 0) + return "DW_FORM value: 0"; + + name = get_DW_FORM_name (form); + if (name == NULL) { - 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]; + static char buffer[100]; - snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); - return buffer; - } + snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); + return buffer; } + + return name; } static unsigned char * -display_block (unsigned char *data, unsigned long length) +display_block (unsigned char *data, + dwarf_vma length, + const unsigned char * const end) { - printf (_(" %lu byte block: "), length); + dwarf_vma maxlen; + + printf (_(" %s byte block: "), dwarf_vmatoa ("u", length)); + if (data > end) + return (unsigned char *) end; + + maxlen = (dwarf_vma) (end - data); + length = length > maxlen ? maxlen : length; while (length --) printf ("%lx ", (unsigned long) byte_get (data++, 1)); @@ -648,12 +886,16 @@ display_block (unsigned char *data, unsigned long length) static int decode_location_expression (unsigned char * data, unsigned int pointer_size, - unsigned long length, - unsigned long cu_offset) + unsigned int offset_size, + int dwarf_version, + dwarf_vma length, + dwarf_vma cu_offset, + struct dwarf_section * section) { unsigned op; unsigned int bytes_read; - unsigned long uvalue; + dwarf_vma uvalue; + dwarf_signed_vma svalue; unsigned char *end = data + length; int need_frame_base = 0; @@ -664,51 +906,56 @@ decode_location_expression (unsigned char * data, switch (op) { case DW_OP_addr: - printf ("DW_OP_addr: %lx", - (unsigned long) byte_get (data, pointer_size)); - data += pointer_size; + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + printf ("DW_OP_addr: %s", dwarf_vmatoa ("x", uvalue)); 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)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_const1u: %lu", (unsigned long) uvalue); break; case DW_OP_const1s: - printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1)); + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 1, end); + printf ("DW_OP_const1s: %ld", (long) svalue); break; case DW_OP_const2u: - printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2)); - data += 2; + SAFE_BYTE_GET_AND_INC (uvalue, data, 2, end); + printf ("DW_OP_const2u: %lu", (unsigned long) uvalue); break; case DW_OP_const2s: - printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_const2s: %ld", (long) svalue); break; case DW_OP_const4u: - printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4)); - data += 4; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_const4u: %lu", (unsigned long) uvalue); break; case DW_OP_const4s: - printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4)); - data += 4; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("DW_OP_const4s: %ld", (long) svalue); 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; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_const8u: %lu ", (unsigned long) uvalue); + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("%lu", (unsigned long) uvalue); break; case DW_OP_const8s: - printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4), - (long) byte_get (data + 4, 4)); - data += 8; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("DW_OP_const8s: %ld ", (long) svalue); + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("%ld", (long) svalue); break; case DW_OP_constu: - printf ("DW_OP_constu: %lu", read_leb128 (data, &bytes_read, 0)); + printf ("DW_OP_constu: %s", + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_consts: - printf ("DW_OP_consts: %ld", read_leb128 (data, &bytes_read, 1)); + printf ("DW_OP_consts: %s", + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_dup: @@ -721,7 +968,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_over"); break; case DW_OP_pick: - printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_pick: %ld", (unsigned long) uvalue); break; case DW_OP_swap: printf ("DW_OP_swap"); @@ -763,8 +1011,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_plus"); break; case DW_OP_plus_uconst: - printf ("DW_OP_plus_uconst: %lu", - read_leb128 (data, &bytes_read, 0)); + printf ("DW_OP_plus_uconst: %s", + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_shl: @@ -780,8 +1028,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_xor"); break; case DW_OP_bra: - printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_bra: %ld", (long) svalue); break; case DW_OP_eq: printf ("DW_OP_eq"); @@ -802,8 +1050,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_ne"); break; case DW_OP_skip: - printf ("DW_OP_skip: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_skip: %ld", (long) svalue); break; case DW_OP_lit0: @@ -873,7 +1121,8 @@ decode_location_expression (unsigned char * data, case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31: - printf ("DW_OP_reg%d", op - DW_OP_reg0); + printf ("DW_OP_reg%d (%s)", op - DW_OP_reg0, + regname (op - DW_OP_reg0, 1)); break; case DW_OP_breg0: @@ -908,36 +1157,45 @@ decode_location_expression (unsigned char * data, 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)); + printf ("DW_OP_breg%d (%s): %s", + op - DW_OP_breg0, + regname (op - DW_OP_breg0, 1), + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_regx: - printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0)); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; + printf ("DW_OP_regx: %s (%s)", + dwarf_vmatoa ("u", uvalue), regname (uvalue, 1)); break; case DW_OP_fbreg: need_frame_base = 1; - printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1)); + printf ("DW_OP_fbreg: %s", + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_bregx: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_bregx: %lu %ld", uvalue, - read_leb128 (data, &bytes_read, 1)); + printf ("DW_OP_bregx: %s (%s) %s", + dwarf_vmatoa ("u", uvalue), regname (uvalue, 1), + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_piece: - printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0)); + printf ("DW_OP_piece: %s", + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_deref_size: - printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_deref_size: %ld", (long) uvalue); break; case DW_OP_xderef_size: - printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_xderef_size: %ld", (long) uvalue); break; case DW_OP_nop: printf ("DW_OP_nop"); @@ -950,20 +1208,35 @@ decode_location_expression (unsigned char * data, 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; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_call2: <0x%s>", + dwarf_vmatoa ("x", svalue + cu_offset)); 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; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("DW_OP_call4: <0x%s>", + dwarf_vmatoa ("x", svalue + cu_offset)); 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; + if (dwarf_version == -1) + { + printf (_("(DW_OP_call_ref in frame info)")); + /* No way to tell where the next op is, so just bail. */ + return need_frame_base; + } + if (dwarf_version == 2) + { + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + } + else + { + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + } + printf ("DW_OP_call_ref: <0x%s>", dwarf_vmatoa ("x", uvalue)); break; case DW_OP_form_tls_address: printf ("DW_OP_form_tls_address"); @@ -973,20 +1246,137 @@ decode_location_expression (unsigned char * data, break; case DW_OP_bit_piece: printf ("DW_OP_bit_piece: "); - printf ("size: %lu ", read_leb128 (data, &bytes_read, 0)); + printf (_("size: %s "), + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); + data += bytes_read; + printf (_("offset: %s "), + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; - printf ("offset: %lu ", read_leb128 (data, &bytes_read, 0)); + 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_uleb128 (data, &bytes_read, end); data += bytes_read; + data = display_block (data, uvalue, end); break; /* GNU extensions. */ case DW_OP_GNU_push_tls_address: - printf ("DW_OP_GNU_push_tls_address or DW_OP_HP_unknown"); + 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 = 0; + dwarf_vma addr; + + if (data < end) + encoding = *data++; + addr = get_encoded_value (&data, encoding, section, end); + + printf ("DW_OP_GNU_encoded_addr: fmt:%02x addr:", encoding); + print_dwarf_vma (addr, pointer_size); + } + break; + case DW_OP_GNU_implicit_pointer: + /* XXX: Strictly speaking for 64-bit DWARF3 files + this ought to be an 8-byte wide computation. */ + if (dwarf_version == -1) + { + printf (_("(DW_OP_GNU_implicit_pointer in frame info)")); + /* No way to tell where the next op is, so just bail. */ + return need_frame_base; + } + if (dwarf_version == 2) + { + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + } + else + { + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + } + printf ("DW_OP_GNU_implicit_pointer: <0x%s> %s", + dwarf_vmatoa ("x", uvalue), + dwarf_vmatoa ("d", read_sleb128 (data, + &bytes_read, end))); + data += bytes_read; + break; + case DW_OP_GNU_entry_value: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + /* PR 17531: file: 0cc9cd00. */ + if (uvalue > (dwarf_vma) (end - data)) + uvalue = end - data; + printf ("DW_OP_GNU_entry_value: ("); + if (decode_location_expression (data, pointer_size, offset_size, + dwarf_version, uvalue, + cu_offset, section)) + need_frame_base = 1; + putchar (')'); + data += uvalue; + if (data > end) + data = end; + break; + case DW_OP_GNU_const_type: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_const_type: <0x%s> ", + dwarf_vmatoa ("x", cu_offset + uvalue)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + data = display_block (data, uvalue, end); + break; + case DW_OP_GNU_regval_type: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_regval_type: %s (%s)", + dwarf_vmatoa ("u", uvalue), regname (uvalue, 1)); + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf (" <0x%s>", dwarf_vmatoa ("x", cu_offset + uvalue)); + break; + case DW_OP_GNU_deref_type: + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_GNU_deref_type: %ld", (long) uvalue); + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf (" <0x%s>", dwarf_vmatoa ("x", cu_offset + uvalue)); + break; + case DW_OP_GNU_convert: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_convert <0x%s>", + dwarf_vmatoa ("x", uvalue ? cu_offset + uvalue : 0)); + break; + case DW_OP_GNU_reinterpret: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_reinterpret <0x%s>", + dwarf_vmatoa ("x", uvalue ? cu_offset + uvalue : 0)); + break; + case DW_OP_GNU_parameter_ref: + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_GNU_parameter_ref: <0x%s>", + dwarf_vmatoa ("x", cu_offset + uvalue)); + break; + case DW_OP_GNU_addr_index: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_addr_index <0x%s>", dwarf_vmatoa ("x", uvalue)); + break; + case DW_OP_GNU_const_index: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_const_index <0x%s>", dwarf_vmatoa ("x", uvalue)); + break; /* HP extensions. */ case DW_OP_HP_is_value: @@ -1041,23 +1431,91 @@ decode_location_expression (unsigned char * data, return need_frame_base; } +/* Find the CU or TU set corresponding to the given CU_OFFSET. + This is used for DWARF package files. */ + +static struct cu_tu_set * +find_cu_tu_set_v2 (dwarf_vma cu_offset, int do_types) +{ + struct cu_tu_set *p; + unsigned int nsets; + unsigned int dw_sect; + + if (do_types) + { + p = tu_sets; + nsets = tu_count; + dw_sect = DW_SECT_TYPES; + } + else + { + p = cu_sets; + nsets = cu_count; + dw_sect = DW_SECT_INFO; + } + while (nsets > 0) + { + if (p->section_offsets [dw_sect] == cu_offset) + return p; + p++; + nsets--; + } + return NULL; +} + +/* Add INC to HIGH_BITS:LOW_BITS. */ +static void +add64 (dwarf_vma * high_bits, dwarf_vma * low_bits, dwarf_vma inc) +{ + dwarf_vma tmp = * low_bits; + + tmp += inc; + + /* FIXME: There is probably a better way of handling this: + + We need to cope with dwarf_vma being a 32-bit or 64-bit + type. Plus regardless of its size LOW_BITS is meant to + only hold 32-bits, so if there is overflow or wrap around + we must propagate into HIGH_BITS. */ + if (tmp < * low_bits) + { + ++ * high_bits; + } + else if (sizeof (tmp) > 8 + && (tmp >> 31) > 1) + { + ++ * high_bits; + tmp &= 0xFFFFFFFF; + } + + * low_bits = tmp; +} + 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, + unsigned char * end, + dwarf_vma cu_offset, + dwarf_vma pointer_size, + dwarf_vma offset_size, int dwarf_version, debug_info * debug_info_p, int do_loc, - struct dwarf_section * section) + struct dwarf_section * section, + struct cu_tu_set * this_set) { - unsigned long uvalue = 0; + dwarf_vma uvalue = 0; unsigned char *block_start = NULL; unsigned char * orig_data = data; unsigned int bytes_read; + if (data > end || (data == end && form != DW_FORM_flag_present)) + { + warn (_("Corrupt attribute\n")); + return data; + } + switch (form) { default: @@ -1065,77 +1523,87 @@ read_and_display_attr_value (unsigned long attribute, 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; - } + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + else if (dwarf_version == 3 || dwarf_version == 4) + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); else - { - error (_("Internal error: DWARF version is not 2 or 3.\n")); - } + error (_("Internal error: DWARF version is not 2, 3 or 4.\n")); + break; case DW_FORM_addr: - uvalue = byte_get (data, pointer_size); - data += pointer_size; + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); break; case DW_FORM_strp: - uvalue = byte_get (data, offset_size); - data += offset_size; + case DW_FORM_sec_offset: + case DW_FORM_GNU_ref_alt: + case DW_FORM_GNU_strp_alt: + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + break; + + case DW_FORM_flag_present: + uvalue = 1; break; case DW_FORM_ref1: case DW_FORM_flag: case DW_FORM_data1: - uvalue = byte_get (data++, 1); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); break; case DW_FORM_ref2: case DW_FORM_data2: - uvalue = byte_get (data, 2); - data += 2; + SAFE_BYTE_GET_AND_INC (uvalue, data, 2, end); break; case DW_FORM_ref4: case DW_FORM_data4: - uvalue = byte_get (data, 4); - data += 4; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); break; case DW_FORM_sdata: - uvalue = read_leb128 (data, & bytes_read, 1); + uvalue = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + break; + + case DW_FORM_GNU_str_index: + uvalue = read_uleb128 (data, & bytes_read, end); data += bytes_read; break; case DW_FORM_ref_udata: case DW_FORM_udata: - uvalue = read_leb128 (data, & bytes_read, 0); + uvalue = read_uleb128 (data, & bytes_read, end); data += bytes_read; break; case DW_FORM_indirect: - form = read_leb128 (data, & bytes_read, 0); + form = read_uleb128 (data, & bytes_read, end); data += bytes_read; if (!do_loc) printf (" %s", get_FORM_name (form)); - return read_and_display_attr_value (attribute, form, data, + return read_and_display_attr_value (attribute, form, data, end, cu_offset, pointer_size, offset_size, dwarf_version, debug_info_p, do_loc, - section); + section, this_set); + case DW_FORM_GNU_addr_index: + uvalue = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + break; } switch (form) { case DW_FORM_ref_addr: if (!do_loc) - printf (" <0x%lx>", uvalue); + printf (" <0x%s>", dwarf_vmatoa ("x",uvalue)); + break; + + case DW_FORM_GNU_ref_alt: + if (!do_loc) + printf (" ", dwarf_vmatoa ("x",uvalue)); break; case DW_FORM_ref1: @@ -1143,102 +1611,209 @@ read_and_display_attr_value (unsigned long attribute, case DW_FORM_ref4: case DW_FORM_ref_udata: if (!do_loc) - printf (" <0x%lx>", uvalue + cu_offset); + printf (" <0x%s>", dwarf_vmatoa ("x", uvalue + cu_offset)); break; case DW_FORM_data4: case DW_FORM_addr: + case DW_FORM_sec_offset: if (!do_loc) - printf (" 0x%lx", uvalue); + printf (" 0x%s", dwarf_vmatoa ("x", uvalue)); break; + case DW_FORM_flag_present: 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); + printf (" %s", dwarf_vmatoa ("d", 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)); + dwarf_vma high_bits; + dwarf_vma utmp; + char buf[64]; + + SAFE_BYTE_GET64 (data, &high_bits, &uvalue, end); + utmp = uvalue; + if (form == DW_FORM_ref8) + add64 (& high_bits, & utmp, cu_offset); + printf (" 0x%s", + dwarf_vmatoa64 (high_bits, utmp, buf, sizeof (buf))); } + if ((do_loc || do_debug_loc || do_debug_ranges) && num_debug_info_entries == 0) { if (sizeof (uvalue) == 8) - uvalue = byte_get (data, 8); + SAFE_BYTE_GET (uvalue, data, 8, end); else - error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n")); + error (_("DW_FORM_data8 is unsupported when sizeof (dwarf_vma) != 8\n")); } + data += 8; break; case DW_FORM_string: if (!do_loc) - printf (" %s", data); - data += strlen ((char *) data) + 1; + printf (" %.*s", (int) (end - data), data); + data += strnlen ((char *) data, end - data) + 1; break; case DW_FORM_block: - uvalue = read_leb128 (data, & bytes_read, 0); + case DW_FORM_exprloc: + uvalue = read_uleb128 (data, & bytes_read, end); block_start = data + bytes_read; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + /* FIXME: Testing "(block_start + uvalue) < block_start" miscompiles with + gcc 4.8.3 running on an x86_64 host in 32-bit mode. So we pre-compute + block_start + uvalue here. */ + data = block_start + uvalue; + /* PR 17512: file: 008-103549-0.001:0.1. */ + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end); break; case DW_FORM_block1: - uvalue = byte_get (data, 1); + SAFE_BYTE_GET (uvalue, data, 1, end); block_start = data + 1; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end); break; case DW_FORM_block2: - uvalue = byte_get (data, 2); + SAFE_BYTE_GET (uvalue, data, 2, end); block_start = data + 2; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end); break; case DW_FORM_block4: - uvalue = byte_get (data, 4); + SAFE_BYTE_GET (uvalue, data, 4, end); block_start = data + 4; + /* PR 17512: file: 3371-3907-0.004. */ + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end + /* PR 17531: file: 5b5f0592. */ + || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end); break; case DW_FORM_strp: if (!do_loc) - printf (_(" (indirect string, offset: 0x%lx): %s"), - uvalue, fetch_indirect_string (uvalue)); + printf (_(" (indirect string, offset: 0x%s): %s"), + dwarf_vmatoa ("x", uvalue), + fetch_indirect_string (uvalue)); break; - case DW_FORM_indirect: - /* Handled above. */ + case DW_FORM_GNU_str_index: + if (!do_loc) + { + const char *suffix = strrchr (section->name, '.'); + int dwo = (suffix && strcmp (suffix, ".dwo") == 0) ? 1 : 0; + + printf (_(" (indexed string: 0x%s): %s"), + dwarf_vmatoa ("x", uvalue), + fetch_indexed_string (uvalue, this_set, offset_size, dwo)); + } break; - default: + case DW_FORM_GNU_strp_alt: + if (!do_loc) + printf (_(" (alt indirect string, offset: 0x%s)"), + dwarf_vmatoa ("x", uvalue)); + break; + + case DW_FORM_indirect: + /* Handled above. */ + break; + + case DW_FORM_ref_sig8: + if (!do_loc) + { + dwarf_vma high_bits; + char buf[64]; + + SAFE_BYTE_GET64 (data, &high_bits, &uvalue, end); + printf (" signature: 0x%s", + dwarf_vmatoa64 (high_bits, uvalue, buf, sizeof (buf))); + } + data += 8; + break; + + case DW_FORM_GNU_addr_index: + if (!do_loc) + printf (_(" (addr_index: 0x%s): %s"), + dwarf_vmatoa ("x", uvalue), + fetch_indexed_value (uvalue * pointer_size, pointer_size)); + break; + + default: warn (_("Unrecognized form: %lu\n"), form); break; } if ((do_loc || do_debug_loc || do_debug_ranges) - && num_debug_info_entries == 0) + && num_debug_info_entries == 0 + && debug_info_p != NULL) { switch (attribute) { @@ -1252,23 +1827,31 @@ read_and_display_attr_value (unsigned long attribute, case DW_AT_segment: case DW_AT_static_link: case DW_AT_use_location: - if (form == DW_FORM_data4 || form == DW_FORM_data8) + case DW_AT_GNU_call_site_value: + case DW_AT_GNU_call_site_data_value: + case DW_AT_GNU_call_site_target: + case DW_AT_GNU_call_site_target_clobbered: + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) + || form == DW_FORM_sec_offset) { /* Process location list. */ - unsigned int max = debug_info_p->max_loc_offsets; + unsigned int lmax = debug_info_p->max_loc_offsets; unsigned int num = debug_info_p->num_loc_offsets; - if (max == 0 || num >= max) + if (lmax == 0 || num >= lmax) { - max += 1024; - debug_info_p->loc_offsets - = xcrealloc (debug_info_p->loc_offsets, - max, sizeof (*debug_info_p->loc_offsets)); - debug_info_p->have_frame_base - = xcrealloc (debug_info_p->have_frame_base, - max, sizeof (*debug_info_p->have_frame_base)); - debug_info_p->max_loc_offsets = max; + lmax += 1024; + debug_info_p->loc_offsets = (dwarf_vma *) + xcrealloc (debug_info_p->loc_offsets, + lmax, sizeof (*debug_info_p->loc_offsets)); + debug_info_p->have_frame_base = (int *) + xcrealloc (debug_info_p->have_frame_base, + lmax, sizeof (*debug_info_p->have_frame_base)); + debug_info_p->max_loc_offsets = lmax; } + if (this_set != NULL) + uvalue += this_set->section_offsets [DW_SECT_LOC]; debug_info_p->loc_offsets [num] = uvalue; debug_info_p->have_frame_base [num] = have_frame_base; debug_info_p->num_loc_offsets++; @@ -1280,20 +1863,30 @@ read_and_display_attr_value (unsigned long attribute, debug_info_p->base_address = uvalue; break; + case DW_AT_GNU_addr_base: + debug_info_p->addr_base = uvalue; + break; + + case DW_AT_GNU_ranges_base: + debug_info_p->ranges_base = uvalue; + break; + case DW_AT_ranges: - if (form == DW_FORM_data4 || form == DW_FORM_data8) + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) + || form == DW_FORM_sec_offset) { /* Process range list. */ - unsigned int max = debug_info_p->max_range_lists; + unsigned int lmax = debug_info_p->max_range_lists; unsigned int num = debug_info_p->num_range_lists; - if (max == 0 || num >= max) + if (lmax == 0 || num >= lmax) { - max += 1024; - debug_info_p->range_lists - = xcrealloc (debug_info_p->range_lists, - max, sizeof (*debug_info_p->range_lists)); - debug_info_p->max_range_lists = max; + lmax += 1024; + debug_info_p->range_lists = (dwarf_vma *) + xcrealloc (debug_info_p->range_lists, + lmax, sizeof (*debug_info_p->range_lists)); + debug_info_p->max_range_lists = lmax; } debug_info_p->range_lists [num] = uvalue; debug_info_p->num_range_lists++; @@ -1305,15 +1898,14 @@ read_and_display_attr_value (unsigned long attribute, } } - if (do_loc) + if (do_loc || attribute == 0) return data; /* For some attributes we can display further information. */ - printf ("\t"); - switch (attribute) { case DW_AT_inline: + printf ("\t"); switch (uvalue) { case DW_INL_not_inlined: @@ -1329,12 +1921,14 @@ read_and_display_attr_value (unsigned long attribute, printf (_("(declared as inline and inlined)")); break; default: - printf (_(" (Unknown inline attribute value: %lx)"), uvalue); + printf (_(" (Unknown inline attribute value: %s)"), + dwarf_vmatoa ("x", uvalue)); break; } break; case DW_AT_language: + printf ("\t"); switch (uvalue) { /* Ordered by the numeric value of these constants. */ @@ -1359,20 +1953,31 @@ read_and_display_attr_value (unsigned long attribute, 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; + /* DWARF 4 values. */ + case DW_LANG_Python: printf ("(Python)"); break; + /* DWARF 5 values. */ + case DW_LANG_Go: printf ("(Go)"); break; + case DW_LANG_C_plus_plus_11: printf ("(C++11)"); break; + case DW_LANG_C11: printf ("(C11)"); break; + case DW_LANG_C_plus_plus_14: printf ("(C++14)"); break; + case DW_LANG_Fortran03: printf ("(Fortran 03)"); break; + case DW_LANG_Fortran08: printf ("(Fortran 08)"); 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); + printf (_("(implementation defined: %s)"), + dwarf_vmatoa ("x", uvalue)); else - printf ("(Unknown: %lx)", uvalue); + printf (_("(Unknown: %s)"), dwarf_vmatoa ("x", uvalue)); break; } break; case DW_AT_encoding: + printf ("\t"); switch (uvalue) { case DW_ATE_void: printf ("(void)"); break; @@ -1401,61 +2006,68 @@ read_and_display_attr_value (unsigned long attribute, 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; + /* DWARF 4 values: */ + case DW_ATE_UTF: printf ("(unicode string)"); break; default: if (uvalue >= DW_ATE_lo_user && uvalue <= DW_ATE_hi_user) - printf ("(user defined type)"); + printf (_("(user defined type)")); else - printf ("(unknown type)"); + printf (_("(unknown type)")); break; } break; case DW_AT_accessibility: + printf ("\t"); 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)"); + printf (_("(unknown accessibility)")); break; } break; case DW_AT_visibility: + printf ("\t"); 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; + default: printf (_("(unknown visibility)")); break; } break; case DW_AT_virtuality: + printf ("\t"); 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; + default: printf (_("(unknown virtuality)")); break; } break; case DW_AT_identifier_case: + printf ("\t"); 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; + default: printf (_("(unknown case)")); break; } break; case DW_AT_calling_convention: + printf ("\t"); switch (uvalue) { case DW_CC_normal: printf ("(normal)"); break; @@ -1464,16 +2076,17 @@ read_and_display_attr_value (unsigned long attribute, default: if (uvalue >= DW_CC_lo_user && uvalue <= DW_CC_hi_user) - printf ("(user defined)"); + printf (_("(user defined)")); else - printf ("(unknown convention)"); + printf (_("(unknown convention)")); } break; case DW_AT_ordering: + printf ("\t"); switch (uvalue) { - case -1: printf ("(undefined)"); break; + case -1: printf (_("(undefined)")); break; case 0: printf ("(row major)"); break; case 1: printf ("(column major)"); break; } @@ -1489,8 +2102,14 @@ read_and_display_attr_value (unsigned long attribute, 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)")); + case DW_AT_GNU_call_site_value: + case DW_AT_GNU_call_site_data_value: + case DW_AT_GNU_call_site_target: + case DW_AT_GNU_call_site_target_clobbered: + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) + || form == DW_FORM_sec_offset) + printf (_(" (location list)")); /* Fall through. */ case DW_AT_allocated: case DW_AT_associated: @@ -1502,11 +2121,13 @@ read_and_display_attr_value (unsigned long attribute, { int need_frame_base; - printf ("("); + printf ("\t("); need_frame_base = decode_location_expression (block_start, pointer_size, + offset_size, + dwarf_version, uvalue, - cu_offset); + cu_offset, section); printf (")"); if (need_frame_base && !have_frame_base) printf (_(" [without DW_AT_frame_base]")); @@ -1515,27 +2136,39 @@ read_and_display_attr_value (unsigned long attribute, case DW_AT_import: { + if (form == DW_FORM_ref_sig8 + || form == DW_FORM_GNU_ref_alt) + break; + if (form == DW_FORM_ref1 || form == DW_FORM_ref2 - || form == DW_FORM_ref4) + || form == DW_FORM_ref4 + || form == DW_FORM_ref_udata) 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, (long int)(orig_data - section->start)); + warn (_("Offset %s used as value for DW_AT_import attribute of DIE at offset 0x%lx is too big.\n"), + dwarf_vmatoa ("x", uvalue), + (unsigned long) (orig_data - section->start)); else { unsigned long abbrev_number; abbrev_entry * entry; - abbrev_number = read_leb128 (section->start + uvalue, NULL, 0); + abbrev_number = read_uleb128 (section->start + uvalue, NULL, end); - 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 (_("\t[Abbrev Number: %ld"), abbrev_number); + /* Don't look up abbrev for DW_FORM_ref_addr, as it very often will + use different abbrev table, and we don't track .debug_info chunks + yet. */ + if (form != DW_FORM_ref_addr) + { + 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 ("]"); } } @@ -1548,192 +2181,68 @@ read_and_display_attr_value (unsigned long attribute, return data; } -static char * +static const 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"; + const char *name; - default: - { - static char buffer[100]; + if (attribute == 0) + return "DW_AT value: 0"; - snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), - attribute); - return buffer; - } + /* One value is shared by the MIPS and HP extensions: */ + if (attribute == DW_AT_MIPS_fde) + return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable"; + + name = get_DW_AT_name (attribute); + + if (name == NULL) + { + static char buffer[100]; + + snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), + attribute); + return buffer; } + + return name; } 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, + unsigned char * end, + dwarf_vma cu_offset, + dwarf_vma pointer_size, + dwarf_vma offset_size, int dwarf_version, debug_info * debug_info_p, int do_loc, - struct dwarf_section * section) + struct dwarf_section * section, + struct cu_tu_set * this_set) { if (!do_loc) printf (" %-18s:", get_AT_name (attribute)); - data = read_and_display_attr_value (attribute, form, data, cu_offset, - pointer_size, offset_size, + data = read_and_display_attr_value (attribute, form, data, end, + cu_offset, pointer_size, offset_size, dwarf_version, debug_info_p, - do_loc, section); + do_loc, section, this_set); 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. */ + anything to the user. If do_types is non-zero, we are processing + a .debug_types section instead of a .debug_info section. */ static int process_debug_info (struct dwarf_section *section, void *file, - int do_loc) + enum dwarf_section_display_enum abbrev_sec, + int do_loc, + int do_types) { unsigned char *start = section->start; unsigned char *end = start + section->size; @@ -1742,9 +2251,10 @@ process_debug_info (struct dwarf_section *section, unsigned int num_units = 0; if ((do_loc || do_debug_loc || do_debug_ranges) - && num_debug_info_entries == 0) + && num_debug_info_entries == 0 + && ! do_types) { - unsigned long length; + dwarf_vma length; /* First scan the section to get the number of comp units. */ for (section_begin = start, num_units = 0; section_begin < end; @@ -1753,16 +2263,17 @@ process_debug_info (struct dwarf_section *section, /* 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); + SAFE_BYTE_GET (length, section_begin, 4, end); if (length == 0xffffffff) { - length = byte_get (section_begin + 4, 8); + SAFE_BYTE_GET (length, section_begin + 4, 8, end); section_begin += length + 12; } else if (length >= 0xfffffff0 && length < 0xffffffff) { - warn (_("Reserved length value (%lx) found in section %s\n"), length, section->name); + warn (_("Reserved length value (0x%s) found in section %s\n"), + dwarf_vmatoa ("x", length), section->name); return 0; } else @@ -1770,43 +2281,58 @@ process_debug_info (struct dwarf_section *section, /* 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) + relocations to an object file, or if the file is corrupt. */ + if ((signed long) length <= 0 || section_begin < start) { - warn (_("Corrupt unit length (%lx) found in section %s\n"), length, section->name); + warn (_("Corrupt unit length (0x%s) found in section %s\n"), + dwarf_vmatoa ("x", length), section->name); return 0; } } if (num_units == 0) { - error (_("No comp units in %s section ?"), section->name); + error (_("No comp units in %s section ?\n"), section->name); return 0; } /* Then allocate an array to hold the information. */ - debug_information = cmalloc (num_units, - sizeof (* debug_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"), + error (_("Not enough memory for a debug info array of %u entries\n"), num_units); + alloc_num_debug_info_entries = num_debug_info_entries = 0; return 0; } + /* PR 17531: file: 92ca3797. + We cannot rely upon the debug_information array being initialised + before it is used. A corrupt file could easily contain references + to a unit for which information has not been made available. So + we ensure that the array is zeroed here. */ + memset (debug_information, 0, num_units * sizeof (*debug_information)); + + alloc_num_debug_info_entries = num_units; } if (!do_loc) { - printf (_("The section %s contains:\n\n"), section->name); + if (dwarf_start_die == 0) + printf (_("Contents of the %s section:\n\n"), section->name); load_debug_section (str, file); + load_debug_section (str_dwo, file); + load_debug_section (str_index, file); + load_debug_section (str_index_dwo, file); + load_debug_section (debug_addr, file); } - load_debug_section (abbrev, file); - if (debug_displays [abbrev].section.start == NULL) + load_debug_section (abbrev_sec, file); + if (debug_displays [abbrev_sec].section.start == NULL) { warn (_("Unable to locate %s section!\n"), - debug_displays [abbrev].section.name); + debug_displays [abbrev_sec].section.name); return 0; } @@ -1814,22 +2340,25 @@ process_debug_info (struct dwarf_section *section, { 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 level, last_level, saved_level; + dwarf_vma cu_offset; + unsigned int offset_size; int initial_length_size; + dwarf_vma signature_high = 0; + dwarf_vma signature_low = 0; + dwarf_vma type_offset = 0; + struct cu_tu_set *this_set; + dwarf_vma abbrev_base; + size_t abbrev_size; hdrptr = start; - compunit.cu_length = byte_get (hdrptr, 4); - hdrptr += 4; + SAFE_BYTE_GET_AND_INC (compunit.cu_length, hdrptr, 4, end); if (compunit.cu_length == 0xffffffff) { - compunit.cu_length = byte_get (hdrptr, 8); - hdrptr += 8; + SAFE_BYTE_GET_AND_INC (compunit.cu_length, hdrptr, 8, end); offset_size = 8; initial_length_size = 12; } @@ -1839,24 +2368,53 @@ process_debug_info (struct dwarf_section *section, initial_length_size = 4; } - compunit.cu_version = byte_get (hdrptr, 2); - hdrptr += 2; + SAFE_BYTE_GET_AND_INC (compunit.cu_version, hdrptr, 2, end); cu_offset = start - section_begin; - cu_abbrev_offset_ptr = hdrptr; - compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size); - hdrptr += offset_size; + this_set = find_cu_tu_set_v2 (cu_offset, do_types); + + SAFE_BYTE_GET_AND_INC (compunit.cu_abbrev_offset, hdrptr, offset_size, end); + + if (this_set == NULL) + { + abbrev_base = 0; + abbrev_size = debug_displays [abbrev_sec].section.size; + } + else + { + abbrev_base = this_set->section_offsets [DW_SECT_ABBREV]; + abbrev_size = this_set->section_sizes [DW_SECT_ABBREV]; + } + + SAFE_BYTE_GET_AND_INC (compunit.cu_pointer_size, hdrptr, 1, end); + /* PR 17512: file: 001-108546-0.001:0.1. */ + if (compunit.cu_pointer_size < 2 || compunit.cu_pointer_size > 8) + { + warn (_("Invalid pointer size (%d) in compunit header, using %d instead\n"), + compunit.cu_pointer_size, offset_size); + compunit.cu_pointer_size = offset_size; + } + + if (do_types) + { + SAFE_BYTE_GET64 (hdrptr, &signature_high, &signature_low, end); + hdrptr += 8; + SAFE_BYTE_GET_AND_INC (type_offset, hdrptr, offset_size, end); + } - compunit.cu_pointer_size = byte_get (hdrptr, 1); - hdrptr += 1; if ((do_loc || do_debug_loc || do_debug_ranges) - && num_debug_info_entries == 0) + && num_debug_info_entries == 0 + && ! do_types) { debug_information [unit].cu_offset = cu_offset; debug_information [unit].pointer_size = compunit.cu_pointer_size; + debug_information [unit].offset_size = offset_size; + debug_information [unit].dwarf_version = compunit.cu_version; debug_information [unit].base_address = 0; + debug_information [unit].addr_base = DEBUG_INFO_UNAVAILABLE; + debug_information [unit].ranges_base = DEBUG_INFO_UNAVAILABLE; debug_information [unit].loc_offsets = NULL; debug_information [unit].have_frame_base = NULL; debug_information [unit].max_loc_offsets = 0; @@ -1866,49 +2424,101 @@ process_debug_info (struct dwarf_section *section, debug_information [unit].num_range_lists = 0; } - if (!do_loc) + if (!do_loc && dwarf_start_die == 0) { - 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 (_(" Compilation Unit @ offset 0x%s:\n"), + dwarf_vmatoa ("x", cu_offset)); + printf (_(" Length: 0x%s (%s)\n"), + dwarf_vmatoa ("x", compunit.cu_length), + offset_size == 8 ? "64-bit" : "32-bit"); printf (_(" Version: %d\n"), compunit.cu_version); - printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset); + printf (_(" Abbrev Offset: 0x%s\n"), + dwarf_vmatoa ("x", compunit.cu_abbrev_offset)); printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); + if (do_types) + { + char buf[64]; + + printf (_(" Signature: 0x%s\n"), + dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + printf (_(" Type Offset: 0x%s\n"), + dwarf_vmatoa ("x", type_offset)); + } + if (this_set != NULL) + { + dwarf_vma *offsets = this_set->section_offsets; + size_t *sizes = this_set->section_sizes; + + printf (_(" Section contributions:\n")); + printf (_(" .debug_abbrev.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_ABBREV]), + dwarf_vmatoa ("x", sizes [DW_SECT_ABBREV])); + printf (_(" .debug_line.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_LINE]), + dwarf_vmatoa ("x", sizes [DW_SECT_LINE])); + printf (_(" .debug_loc.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_LOC]), + dwarf_vmatoa ("x", sizes [DW_SECT_LOC])); + printf (_(" .debug_str_offsets.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_STR_OFFSETS]), + dwarf_vmatoa ("x", sizes [DW_SECT_STR_OFFSETS])); + } } 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); + warn (_("Debug info is corrupted, length of CU at %s" + " extends beyond end of section (length = %s)\n"), + dwarf_vmatoa ("x", cu_offset), + dwarf_vmatoa ("x", compunit.cu_length)); + num_units = unit; break; } tags = hdrptr; start += compunit.cu_length + initial_length_size; - if (compunit.cu_version != 2 && compunit.cu_version != 3) + if (start > end) + { + warn (_("Debug info is corrupt. CU at %s extends beyond end of section"), + dwarf_vmatoa ("x", cu_offset)); + start = end; + } + + if (compunit.cu_version != 2 + && compunit.cu_version != 3 + && compunit.cu_version != 4) { - warn (_("CU at offset %lx contains corrupt or unsupported version number: %d.\n"), - cu_offset, compunit.cu_version); + warn (_("CU at offset %s contains corrupt or " + "unsupported version number: %d.\n"), + dwarf_vmatoa ("x", 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) + /* Process the abbrevs used by this compilation unit. */ + if (compunit.cu_abbrev_offset >= abbrev_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); + (unsigned long) abbrev_size); + /* PR 17531: file:4bcd9ce9. */ + else if ((abbrev_base + abbrev_size) + > debug_displays [abbrev_sec].section.size) + warn (_("Debug info is corrupted, abbrev size (%lx) is larger than abbrev section size (%lx)\n"), + (unsigned long) abbrev_base + abbrev_size, + (unsigned long) debug_displays [abbrev_sec].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); + (((unsigned char *) debug_displays [abbrev_sec].section.start + + abbrev_base + compunit.cu_abbrev_offset), + ((unsigned char *) debug_displays [abbrev_sec].section.start + + abbrev_base + abbrev_size)); level = 0; + last_level = level; + saved_level = -1; while (tags < start) { unsigned int bytes_read; @@ -1916,15 +2526,35 @@ process_debug_info (struct dwarf_section *section, unsigned long die_offset; abbrev_entry *entry; abbrev_attr *attr; + int do_printing = 1; die_offset = tags - section_begin; - abbrev_number = read_leb128 (tags, & bytes_read, 0); + abbrev_number = read_uleb128 (tags, & bytes_read, start); tags += bytes_read; - /* A null DIE marks the end of a list of siblings. */ + /* 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; + } + + if (!do_loc && die_offset >= dwarf_start_die + && (dwarf_cutoff_level == -1 + || level < dwarf_cutoff_level)) + printf (_(" <%d><%lx>: Abbrev Number: 0\n"), + level, die_offset); + --level; if (level < 0) { @@ -1932,19 +2562,37 @@ process_debug_info (struct dwarf_section *section, if (num_bogus_warns < 3) { - warn (_("Bogus end-of-siblings marker detected at offset %lx in .debug_info section\n"), - die_offset); + warn (_("Bogus end-of-siblings marker detected at offset %lx in %s section\n"), + die_offset, section->name); num_bogus_warns ++; if (num_bogus_warns == 3) warn (_("Further warnings about bogus end-of-sibling markers suppressed\n")); } } + if (dwarf_start_die != 0 && level < saved_level) + return 1; continue; } if (!do_loc) - printf (_(" <%d><%lx>: Abbrev Number: %lu"), - level, die_offset, abbrev_number); + { + if (dwarf_start_die != 0 && die_offset < dwarf_start_die) + do_printing = 0; + else + { + if (dwarf_start_die != 0 && die_offset == dwarf_start_die) + saved_level = level; + do_printing = (dwarf_cutoff_level == -1 + || level < dwarf_cutoff_level); + if (do_printing) + printf (_(" <%d><%lx>: Abbrev Number: %lu"), + level, die_offset, abbrev_number); + else if (dwarf_cutoff_level == -1 + || last_level < dwarf_cutoff_level) + printf (_(" <%d><%lx>: ...\n"), level, die_offset); + last_level = level; + } + } /* Scan through the abbreviation list until we reach the correct entry. */ @@ -1955,18 +2603,18 @@ process_debug_info (struct dwarf_section *section, if (entry == NULL) { - if (!do_loc) + if (!do_loc && do_printing) { printf ("\n"); fflush (stdout); } - warn (_("DIE at offset %lx refers to abbreviation number %lu which does not exist\n"), + warn (_("DIE at offset 0x%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)); + if (!do_loc && do_printing) + printf (" (%s)\n", get_TAG_name (entry->tag)); switch (entry->tag) { @@ -1984,38 +2632,55 @@ process_debug_info (struct dwarf_section *section, break; } - for (attr = entry->first_attr; attr; attr = attr->next) + for (attr = entry->first_attr; + attr && attr->attribute; + attr = attr->next) { - if (! do_loc) + debug_info *arg; + + if (! do_loc && do_printing) /* Show the offset from where the tag was extracted. */ - printf (" <%2lx>", (unsigned long)(tags - section_begin)); + printf (" <%lx>", (unsigned long)(tags - section_begin)); + + if (debug_information && unit < alloc_num_debug_info_entries) + arg = debug_information + unit; + else + arg = NULL; tags = read_and_display_attr (attr->attribute, attr->form, - tags, cu_offset, + tags, + end, + cu_offset, compunit.cu_pointer_size, offset_size, compunit.cu_version, - debug_information + unit, - do_loc, section); + arg, + do_loc || ! do_printing, + section, + this_set); } - if (entry->children) - ++level; - } + 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) + && num_debug_info_entries == 0 + && ! do_types) { - printf ("\n"); + if (num_units > alloc_num_debug_info_entries) + num_debug_info_entries = alloc_num_debug_info_entries; + else + num_debug_info_entries = num_units; } + if (!do_loc) + printf ("\n"); + return 1; } @@ -2034,7 +2699,7 @@ load_debug_info (void * file) 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. */ + section then do not bother to repeat the task. */ if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE) return 0; @@ -2042,340 +2707,1039 @@ load_debug_info (void * file) if (num_debug_info_entries > 0) return num_debug_info_entries; + /* If this is a DWARF package file, load the CU and TU indexes. */ + load_cu_tu_indexes (file); + if (load_debug_section (info, file) - && process_debug_info (&debug_displays [info].section, file, 1)) + && process_debug_info (&debug_displays [info].section, file, abbrev, 1, 0)) + return num_debug_info_entries; + + if (load_debug_section (info_dwo, file) + && process_debug_info (&debug_displays [info_dwo].section, file, + abbrev_dwo, 1, 0)) return num_debug_info_entries; num_debug_info_entries = DEBUG_INFO_UNAVAILABLE; return 0; } -static int -display_debug_lines (struct dwarf_section *section, void *file) +/* Read a DWARF .debug_line section header starting at DATA. + Upon success returns an updated DATA pointer and the LINFO + structure and the END_OF_SEQUENCE pointer will be filled in. + Otherwise returns NULL. */ + +static unsigned char * +read_debug_line_header (struct dwarf_section * section, + unsigned char * data, + unsigned char * end, + DWARF2_Internal_LineInfo * linfo, + unsigned char ** end_of_sequence) { - unsigned char *start = section->start; - unsigned char *data = start; - unsigned char *end = start + section->size; + unsigned char *hdrptr; + unsigned int offset_size; + unsigned int initial_length_size; - printf (_("\nDump of debug contents of section %s:\n\n"), - section->name); + /* Extract information from the Line Number Program Header. + (section 6.2.4 in the Dwarf3 doc). */ + hdrptr = data; - if (load_debug_info (file) == 0) + /* Get and check the length of the block. */ + SAFE_BYTE_GET_AND_INC (linfo->li_length, hdrptr, 4, end); + + if (linfo->li_length == 0xffffffff) { - warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), - section->name); - return 0; + /* This section is 64-bit DWARF 3. */ + SAFE_BYTE_GET_AND_INC (linfo->li_length, hdrptr, 8, end); + offset_size = 8; + initial_length_size = 12; } - - while (data < end) + else { - 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; + offset_size = 4; + initial_length_size = 4; + } - if (info.li_length == 0xffffffff) + if (linfo->li_length + initial_length_size > section->size) + { + /* If the length field has a relocation against it, then we should + not complain if it is inaccurate (and probably negative). This + happens in object files when the .debug_line section is actually + comprised of several different .debug_line.* sections, (some of + which may be removed by linker garbage collection), and a relocation + is used to compute the correct length once that is done. */ + if (reloc_at (section, (hdrptr - section->start) - offset_size)) { - /* This section is 64-bit DWARF 3. */ - info.li_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; + linfo->li_length = (end - data) - initial_length_size; } else { - offset_size = 4; - initial_length_size = 4; + warn (_("The length field (0x%lx) in the debug_line header is wrong - the section is too small\n"), + (long) linfo->li_length); + return NULL; } + } - 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 and check the version number. */ + SAFE_BYTE_GET_AND_INC (linfo->li_version, hdrptr, 2, end); + + if (linfo->li_version != 2 + && linfo->li_version != 3 + && linfo->li_version != 4) + { + warn (_("Only DWARF version 2, 3 and 4 line info is currently supported.\n")); + return NULL; + } + + SAFE_BYTE_GET_AND_INC (linfo->li_prologue_length, hdrptr, offset_size, end); + SAFE_BYTE_GET_AND_INC (linfo->li_min_insn_length, hdrptr, 1, end); - /* Check its version number. */ - info.li_version = byte_get (hdrptr, 2); - hdrptr += 2; - if (info.li_version != 2 && info.li_version != 3) + if (linfo->li_version >= 4) + { + SAFE_BYTE_GET_AND_INC (linfo->li_max_ops_per_insn, hdrptr, 1, end); + + if (linfo->li_max_ops_per_insn == 0) { - warn (_("Only DWARF version 2 and 3 line info is currently supported.\n")); - return 0; + warn (_("Invalid maximum operations per insn.\n")); + return NULL; } + } + else + linfo->li_max_ops_per_insn = 1; - 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")); + SAFE_BYTE_GET_AND_INC (linfo->li_default_is_stmt, hdrptr, 1, end); + SAFE_SIGNED_BYTE_GET_AND_INC (linfo->li_line_base, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (linfo->li_line_range, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (linfo->li_opcode_base, hdrptr, 1, end); - while (*data != 0) - { - printf (_(" %s\n"), data); + * end_of_sequence = data + linfo->li_length + initial_length_size; + /* PR 17512: file:002-117414-0.004. */ + if (* end_of_sequence > end) + { + warn (_("Line length %s extends beyond end of section\n"), + dwarf_vmatoa ("u", linfo->li_length)); + * end_of_sequence = end; + return NULL; + } - data += strlen ((char *) data) + 1; - } - } + return hdrptr; +} + +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); - /* Skip the NUL at the end of the table. */ - data++; + while (data < end) + { + static DWARF2_Internal_LineInfo saved_linfo; + DWARF2_Internal_LineInfo linfo; + unsigned char *standard_opcodes; + unsigned char *end_of_sequence; + unsigned int last_dir_entry = 0; + int i; - /* Display the contents of the File Name table. */ - if (*data == 0) - printf (_("\n The File Name Table is empty.\n")); + if (const_strneq (section->name, ".debug_line.") + /* Note: the following does not apply to .debug_line.dwo sections. + These are full debug_line sections. */ + && strcmp (section->name, ".debug_line.dwo") != 0) + { + /* Sections named .debug_line. are fragments of a .debug_line + section containing just the Line Number Statements. They are + created by the assembler and intended to be used alongside gcc's + -ffunction-sections command line option. When the linker's + garbage collection decides to discard a .text. section it + can then also discard the line number information in .debug_line.. + + Since the section is a fragment it does not have the details + needed to fill out a LineInfo structure, so instead we use the + details from the last full debug_line section that we processed. */ + end_of_sequence = end; + standard_opcodes = NULL; + linfo = saved_linfo; + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) + { + warn (_("Partial .debug_line. section encountered without a prior full .debug_line section\n")); + return 0; + } + reset_state_machine (linfo.li_default_is_stmt); + } else { - printf (_("\n The File Name Table:\n")); - printf (_(" Entry\tDir\tTime\tSize\tName\n")); - - while (*data != 0) + unsigned char * hdrptr; + + if ((hdrptr = read_debug_line_header (section, data, end, & linfo, + & end_of_sequence)) == NULL) + return 0; + + printf (_(" Offset: 0x%lx\n"), (long)(data - start)); + printf (_(" Length: %ld\n"), (long) linfo.li_length); + printf (_(" DWARF Version: %d\n"), linfo.li_version); + printf (_(" Prologue Length: %d\n"), (int) linfo.li_prologue_length); + printf (_(" Minimum Instruction Length: %d\n"), linfo.li_min_insn_length); + if (linfo.li_version >= 4) + printf (_(" Maximum Ops per Instruction: %d\n"), linfo.li_max_ops_per_insn); + printf (_(" Initial value of 'is_stmt': %d\n"), linfo.li_default_is_stmt); + printf (_(" Line Base: %d\n"), linfo.li_line_base); + printf (_(" Line Range: %d\n"), linfo.li_line_range); + printf (_(" Opcode Base: %d\n"), linfo.li_opcode_base); + + /* PR 17512: file: 1665-6428-0.004. */ + if (linfo.li_line_range == 0) { - unsigned char *name; - unsigned int bytes_read; + warn (_("Line range of 0 is invalid, using 1 instead\n")); + linfo.li_line_range = 1; + } - printf (_(" %d\t"), ++state_machine_regs.last_file_entry); - name = data; + reset_state_machine (linfo.li_default_is_stmt); - data += strlen ((char *) data) + 1; + /* Display the contents of the Opcodes table. */ + standard_opcodes = hdrptr; - 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); + /* PR 17512: file: 002-417945-0.004. */ + if (standard_opcodes + linfo.li_opcode_base >= end) + { + warn (_("Line Base extends beyond end of section\n")); + return 0; } - } - - /* Skip the NUL at the end of the table. */ - data++; - /* Now display the statements. */ - printf (_("\n Line Number Statements:\n")); + printf (_("\n Opcodes:\n")); - while (data < end_of_sequence) - { - unsigned char op_code; - int adv; - unsigned long int uladv; - unsigned int bytes_read; + for (i = 1; i < linfo.li_opcode_base; i++) + printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); - op_code = *data++; + /* Display the contents of the Directory table. */ + data = standard_opcodes + linfo.li_opcode_base - 1; - 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) + if (*data == 0) + printf (_("\n The Directory Table is empty.\n")); + else { - case DW_LNS_extended_op: - data += process_extended_line_op (data, info.li_default_is_stmt); - break; + printf (_("\n The Directory Table (offset 0x%lx):\n"), + (long)(data - start)); - case DW_LNS_copy: - printf (_(" Copy\n")); - break; + while (data < end && *data != 0) + { + printf (" %d\t%.*s\n", ++last_dir_entry, (int) (end - data), data); - 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; + data += strnlen ((char *) data, end - data) + 1; + } - 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; + /* PR 17512: file: 002-132094-0.004. */ + if (data >= end - 1) + 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; + /* Skip the NUL at the end of the table. */ + data++; - 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; + /* 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 (offset 0x%lx):\n"), + (long)(data - start)); + printf (_(" Entry\tDir\tTime\tSize\tName\n")); - case DW_LNS_negate_stmt: - adv = state_machine_regs.is_stmt; - adv = ! adv; - printf (_(" Set is_stmt to %d\n"), adv); - state_machine_regs.is_stmt = adv; - break; + while (data < end && *data != 0) + { + unsigned char *name; + unsigned int bytes_read; - case DW_LNS_set_basic_block: - printf (_(" Set basic block\n")); - state_machine_regs.basic_block = 1; - break; + printf (" %d\t", ++state_machine_regs.last_file_entry); + name = data; + data += strnlen ((char *) data, end - data) + 1; - 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; + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%.*s\n", (int)(end - name), name); - 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; + if (data == end) + { + warn (_("Corrupt file name table entry\n")); + break; + } + } + } - case DW_LNS_set_prologue_end: - printf (_(" Set prologue_end to true\n")); - break; + /* Skip the NUL at the end of the table. */ + data++; + putchar ('\n'); + saved_linfo = linfo; + } - case DW_LNS_set_epilogue_begin: - printf (_(" Set epilogue_begin to true\n")); - break; + /* Now display the statements. */ + if (data >= end_of_sequence) + printf (_(" No Line Number Statements.\n")); + else + { + printf (_(" Line Number Statements:\n")); - case DW_LNS_set_isa: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set ISA to %lu\n"), uladv); - break; + while (data < end_of_sequence) + { + unsigned char op_code; + dwarf_signed_vma adv; + dwarf_vma uladv; + unsigned int bytes_read; - default: - printf (_(" Unknown opcode %d with operands: "), op_code); + printf (" [0x%08lx]", (long)(data - start)); + + op_code = *data++; - for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + if (op_code >= linfo.li_opcode_base) { - printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0), - i == 1 ? "" : ", "); - data += bytes_read; + op_code -= linfo.li_opcode_base; + uladv = (op_code / linfo.li_line_range); + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + printf (_(" Special opcode %d: " + "advance Address by %s to 0x%s"), + op_code, dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address)); + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + printf (_(" Special opcode %d: " + "advance Address by %s to 0x%s[%d]"), + op_code, dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index); + } + adv = (op_code % linfo.li_line_range) + linfo.li_line_base; + state_machine_regs.line += adv; + printf (_(" and Line by %s to %d\n"), + dwarf_vmatoa ("d", adv), state_machine_regs.line); } - putchar ('\n'); - break; + else switch (op_code) + { + case DW_LNS_extended_op: + data += process_extended_line_op (data, linfo.li_default_is_stmt, end); + break; + + case DW_LNS_copy: + printf (_(" Copy\n")); + break; + + case DW_LNS_advance_pc: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + printf (_(" Advance PC by %s to 0x%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address)); + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + printf (_(" Advance PC by %s to 0x%s[%d]\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index); + } + break; + + case DW_LNS_advance_line: + adv = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.line += adv; + printf (_(" Advance Line by %s to %d\n"), + dwarf_vmatoa ("d", adv), + state_machine_regs.line); + break; + + case DW_LNS_set_file: + adv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set File Name to entry %s in the File Name Table\n"), + dwarf_vmatoa ("d", adv)); + state_machine_regs.file = adv; + break; + + case DW_LNS_set_column: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set column to %s\n"), + dwarf_vmatoa ("u", 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 %s\n"), dwarf_vmatoa ("d", 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 - linfo.li_opcode_base) / linfo.li_line_range); + if (linfo.li_max_ops_per_insn) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + printf (_(" Advance PC by constant %s to 0x%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address)); + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + printf (_(" Advance PC by constant %s to 0x%s[%d]\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index); + } + break; + + case DW_LNS_fixed_advance_pc: + SAFE_BYTE_GET_AND_INC (uladv, data, 2, end); + state_machine_regs.address += uladv; + state_machine_regs.op_index = 0; + printf (_(" Advance PC by fixed size amount %s to 0x%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", 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_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set ISA to %s\n"), dwarf_vmatoa ("u", uladv)); + break; + + default: + printf (_(" Unknown opcode %d with operands: "), op_code); + + if (standard_opcodes != NULL) + for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + { + printf ("0x%s%s", dwarf_vmatoa ("x", read_uleb128 (data, + &bytes_read, end)), + i == 1 ? "" : ", "); + data += bytes_read; + } + putchar ('\n'); + break; + } } + putchar ('\n'); } - putchar ('\n'); } return 1; } -static debug_info * -find_debug_info_for_offset (unsigned long offset) +typedef struct { - 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; + unsigned char *name; + unsigned int directory_index; + unsigned int modification_date; + unsigned int length; +} File_Entry; - return NULL; -} +/* Output a decoded representation of the .debug_line section. */ static int -display_debug_pubnames (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +display_debug_lines_decoded (struct dwarf_section *section, + unsigned char *data, + unsigned char *end) { - 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); + static DWARF2_Internal_LineInfo saved_linfo; - printf (_("Contents of the %s section:\n\n"), section->name); + printf (_("Decoded dump of debug contents of section %s:\n\n"), + section->name); - while (start < end) + while (data < 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) + /* This loop amounts to one iteration per compilation unit. */ + DWARF2_Internal_LineInfo linfo; + unsigned char *standard_opcodes; + unsigned char *end_of_sequence; + int i; + File_Entry *file_table = NULL; + unsigned int n_files = 0; + unsigned char **directory_table = NULL; + unsigned int n_directories = 0; + + if (const_strneq (section->name, ".debug_line.") + /* Note: the following does not apply to .debug_line.dwo sections. + These are full debug_line sections. */ + && strcmp (section->name, ".debug_line.dwo") != 0) { - pubnames.pn_length = byte_get (data, 8); - data += 8; - offset_size = 8; + /* See comment in display_debug_lines_raw(). */ + end_of_sequence = end; + standard_opcodes = NULL; + linfo = saved_linfo; + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) + { + warn (_("Partial .debug_line. section encountered without a prior full .debug_line section\n")); + return 0; + } + reset_state_machine (linfo.li_default_is_stmt); + } + else + { + unsigned char *hdrptr; + + if ((hdrptr = read_debug_line_header (section, data, end, & linfo, + & end_of_sequence)) == NULL) + return 0; + + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) + { + warn (_("Line range of 0 is invalid, using 1 instead\n")); + linfo.li_line_range = 1; + } + reset_state_machine (linfo.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 + linfo.li_opcode_base - 1; + if (*data != 0) + { + unsigned char *ptr_directory_table = data; + + while (*data != 0) + { + data += strnlen ((char *) data, end - 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 += strnlen ((char *) ptr_directory_table, + ptr_directory_table - end) + 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 char *ptr_file_name_table = data; + + while (*data != 0) + { + unsigned int bytes_read; + + /* Skip Name, directory index, last modification time and length + of file. */ + data += strnlen ((char *) data, end - data) + 1; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + 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 += strnlen ((char *) ptr_file_name_table, + end - ptr_file_name_table) + 1; + + /* We are not interested in directory, time or size. */ + file_table[i].directory_index = read_uleb128 (ptr_file_name_table, + & bytes_read, end); + ptr_file_name_table += bytes_read; + file_table[i].modification_date = read_uleb128 (ptr_file_name_table, + & bytes_read, end); + ptr_file_name_table += bytes_read; + file_table[i].length = read_uleb128 (ptr_file_name_table, & bytes_read, end); + 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 + { + unsigned int ix = file_table[0].directory_index; + const char *directory = ix ? (char *)directory_table[ix - 1] : "."; + + if (do_wide || strlen (directory) < 76) + printf (_("CU: %s/%s:\n"), directory, 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++; + + saved_linfo = linfo; + } + + /* 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++; + + if (op_code >= linfo.li_opcode_base) + { + op_code -= linfo.li_opcode_base; + uladv = (op_code / linfo.li_line_range); + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + } + + adv = (op_code % linfo.li_line_range) + linfo.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 char ext_op_code; + unsigned char *op_code_data = data; + + ext_op_code_len = read_uleb128 (op_code_data, &bytes_read, + end_of_sequence); + 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 (linfo.li_default_is_stmt); + break; + case DW_LNE_set_address: + SAFE_BYTE_GET_AND_INC (state_machine_regs.address, + op_code_data, + ext_op_code_len - bytes_read - 1, + end); + state_machine_regs.op_index = 0; + break; + case DW_LNE_define_file: + { + file_table = (File_Entry *) xrealloc + (file_table, (n_files + 1) * sizeof (File_Entry)); + + ++state_machine_regs.last_file_entry; + /* Source file name. */ + file_table[n_files].name = op_code_data; + op_code_data += strlen ((char *) op_code_data) + 1; + /* Directory index. */ + file_table[n_files].directory_index = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + op_code_data += bytes_read; + /* Last modification time. */ + file_table[n_files].modification_date = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + op_code_data += bytes_read; + /* File length. */ + file_table[n_files].length = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + + n_files++; + break; + } + case DW_LNE_set_discriminator: + case DW_LNE_HP_set_sequence: + /* Simply ignored. */ + break; + + default: + printf (_("UNKNOWN (%u): length %d\n"), + ext_op_code, 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_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + } + break; + + case DW_LNS_advance_line: + adv = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.line += adv; + break; + + case DW_LNS_set_file: + adv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.file = adv; + + if (file_table == NULL) + printf (_("\n [Use file table entry %d]\n"), state_machine_regs.file - 1); + else 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 if (directory_table == NULL) + printf (_("\n [Use directory table entry %d]\n"), + file_table[state_machine_regs.file - 1].directory_index - 1); + 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_uleb128 (data, & bytes_read, end); + 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 - linfo.li_opcode_base) / linfo.li_line_range); + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + } + else + { + state_machine_regs.address + += ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + } + break; + + case DW_LNS_fixed_advance_pc: + SAFE_BYTE_GET_AND_INC (uladv, data, 2, end); + state_machine_regs.address += uladv; + state_machine_regs.op_index = 0; + break; + + case DW_LNS_set_prologue_end: + break; + + case DW_LNS_set_epilogue_begin: + break; + + case DW_LNS_set_isa: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set ISA to %lu\n"), uladv); + break; + + default: + printf (_(" Unknown opcode %d with operands: "), op_code); + + if (standard_opcodes != NULL) + for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + { + printf ("0x%s%s", dwarf_vmatoa ("x", read_uleb128 (data, + &bytes_read, end)), + 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 *newFileName = NULL; + size_t fileNameLength; + + if (file_table) + fileName = (char *) file_table[state_machine_regs.file - 1].name; + else + fileName = ""; + + 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)) + { + if (linfo.li_max_ops_per_insn == 1) + printf ("%-35s %11d %#18" DWARF_VMA_FMT "x\n", + newFileName, state_machine_regs.line, + state_machine_regs.address); + else + printf ("%-35s %11d %#18" DWARF_VMA_FMT "x[%d]\n", + newFileName, state_machine_regs.line, + state_machine_regs.address, + state_machine_regs.op_index); + } + else + { + if (linfo.li_max_ops_per_insn == 1) + printf ("%s %11d %#18" DWARF_VMA_FMT "x\n", + newFileName, state_machine_regs.line, + state_machine_regs.address); + else + printf ("%s %11d %#18" DWARF_VMA_FMT "x[%d]\n", + newFileName, state_machine_regs.line, + state_machine_regs.address, + state_machine_regs.op_index); + } + + if (op_code == DW_LNE_end_sequence) + printf ("\n"); + + free (newFileName); + } + } + + if (file_table) + { + free (file_table); + file_table = NULL; + n_files = 0; + } + + if (directory_table) + { + free (directory_table); + directory_table = NULL; + n_directories = 0; + } + + putchar ('\n'); + } + + return 1; +} + +static int +display_debug_lines (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) +{ + unsigned char *data = section->start; + unsigned char *end = data + section->size; + int retValRaw = 1; + int retValDecoded = 1; + + 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 const char * +get_gdb_index_symbol_kind_name (gdb_index_symbol_kind kind) +{ + /* See gdb/gdb-index.h. */ + static const char * const kinds[] = + { + N_ ("no info"), + N_ ("type"), + N_ ("variable"), + N_ ("function"), + N_ ("other"), + N_ ("unused5"), + N_ ("unused6"), + N_ ("unused7") + }; + + return _ (kinds[kind]); +} + +static int +display_debug_pubnames_worker (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED, + int is_gnu) +{ + DWARF2_Internal_PubNames names; + 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 char *adr; + dwarf_vma offset; + unsigned int offset_size, initial_length_size; + + data = start; + + SAFE_BYTE_GET_AND_INC (names.pn_length, data, 4, end); + if (names.pn_length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (names.pn_length, data, 8, end); + offset_size = 8; initial_length_size = 12; } else @@ -2384,24 +3748,39 @@ display_debug_pubnames (struct dwarf_section *section, initial_length_size = 4; } - pubnames.pn_version = byte_get (data, 2); - data += 2; - - pubnames.pn_offset = byte_get (data, offset_size); - data += offset_size; + SAFE_BYTE_GET_AND_INC (names.pn_version, data, 2, end); + SAFE_BYTE_GET_AND_INC (names.pn_offset, data, offset_size, end); if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE && num_debug_info_entries > 0 - && find_debug_info_for_offset (pubnames.pn_offset) == NULL) + && find_debug_info_for_offset (names.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); + (unsigned long) names.pn_offset, section->name); - pubnames.pn_size = byte_get (data, offset_size); - data += offset_size; + SAFE_BYTE_GET_AND_INC (names.pn_size, data, offset_size, end); + + adr = start + names.pn_length + initial_length_size; + /* PR 17531: file: 7615b6b2. */ + if ((dwarf_signed_vma) names.pn_length < 0 + /* PR 17531: file: a5dbeaa7. */ + || adr < start) + { + warn (_("Negative length for public name: 0x%lx\n"), (long) names.pn_length); + start = end; + } + else + start = adr; - start += pubnames.pn_length + initial_length_size; + printf (_(" Length: %ld\n"), + (long) names.pn_length); + printf (_(" Version: %d\n"), + names.pn_version); + printf (_(" Offset into .debug_info section: 0x%lx\n"), + (unsigned long) names.pn_offset); + printf (_(" Size of area in .debug_info section: %ld\n"), + (long) names.pn_size); - if (pubnames.pn_version != 2 && pubnames.pn_version != 3) + if (names.pn_version != 2 && names.pn_version != 3) { static int warned = 0; @@ -2414,26 +3793,53 @@ display_debug_pubnames (struct dwarf_section *section, 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")); + if (is_gnu) + printf (_("\n Offset Kind Name\n")); + else + printf (_("\n Offset\tName\n")); do { - offset = byte_get (data, offset_size); + bfd_size_type maxprint; + + SAFE_BYTE_GET (offset, data, offset_size, end); if (offset != 0) { data += offset_size; - printf (" %-6ld\t\t%s\n", offset, data); - data += strlen ((char *) data) + 1; + if (data >= end) + break; + maxprint = (end - data) - 1; + + if (is_gnu) + { + unsigned int kind_data; + gdb_index_symbol_kind kind; + const char *kind_name; + int is_static; + + SAFE_BYTE_GET (kind_data, data, 1, end); + data++; + maxprint --; + /* GCC computes the kind as the upper byte in the CU index + word, and then right shifts it by the CU index size. + Left shift KIND to where the gdb-index.h accessor macros + can use it. */ + kind_data <<= GDB_INDEX_CU_BITSIZE; + kind = GDB_INDEX_SYMBOL_KIND_VALUE (kind_data); + kind_name = get_gdb_index_symbol_kind_name (kind); + is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (kind_data); + printf (" %-6lx %s,%-10s %.*s\n", + (unsigned long) offset, is_static ? _("s") : _("g"), + kind_name, (int) maxprint, data); + } + else + printf (" %-6lx\t%.*s\n", + (unsigned long) offset, (int) maxprint, data); + + data += strnlen ((char *) data, maxprint) + 1; + if (data >= end) + break; } } while (offset != 0); @@ -2443,6 +3849,18 @@ display_debug_pubnames (struct dwarf_section *section, return 1; } +static int +display_debug_pubnames (struct dwarf_section *section, void *file) +{ + return display_debug_pubnames_worker (section, file, 0); +} + +static int +display_debug_gnu_pubnames (struct dwarf_section *section, void *file) +{ + return display_debug_pubnames_worker (section, file, 1); +} + static int display_debug_macinfo (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) @@ -2458,9 +3876,9 @@ display_debug_macinfo (struct dwarf_section *section, while (curr < end) { unsigned int lineno; - const char *string; + const unsigned char *string; - op = *curr; + op = (enum dwarf_macinfo_record_type) *curr; curr++; switch (op) @@ -2469,9 +3887,9 @@ display_debug_macinfo (struct dwarf_section *section, { unsigned int filenum; - lineno = read_leb128 (curr, & bytes_read, 0); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - filenum = read_leb128 (curr, & bytes_read, 0); + filenum = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), @@ -2484,19 +3902,19 @@ display_debug_macinfo (struct dwarf_section *section, break; case DW_MACINFO_define: - lineno = read_leb128 (curr, & bytes_read, 0); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - 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); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), lineno, string); break; @@ -2505,10 +3923,10 @@ display_debug_macinfo (struct dwarf_section *section, { unsigned int constant; - constant = read_leb128 (curr, & bytes_read, 0); + constant = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"), constant, string); } @@ -2519,466 +3937,701 @@ display_debug_macinfo (struct dwarf_section *section, return 1; } -static int -display_debug_abbrev (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +/* Given LINE_OFFSET into the .debug_line section, attempt to return + filename and dirname corresponding to file name table entry with index + FILEIDX. Return NULL on failure. */ + +static unsigned char * +get_line_filename_and_dirname (dwarf_vma line_offset, + dwarf_vma fileidx, + unsigned char **dir_name) { - abbrev_entry *entry; - unsigned char *start = section->start; - unsigned char *end = start + section->size; + struct dwarf_section *section = &debug_displays [line].section; + unsigned char *hdrptr, *dirtable, *file_name; + unsigned int offset_size, initial_length_size; + unsigned int version, opcode_base, bytes_read; + dwarf_vma length, diridx; + const unsigned char * end; + + *dir_name = NULL; + if (section->start == NULL + || line_offset >= section->size + || fileidx == 0) + return NULL; - printf (_("Contents of the %s section:\n\n"), section->name); + hdrptr = section->start + line_offset; + end = section->start + section->size; - do + SAFE_BYTE_GET_AND_INC (length, hdrptr, 4, end); + if (length == 0xffffffff) { - free_abbrevs (); - - start = process_abbrev_section (start, end); - - if (first_abbrev == NULL) - continue; - - printf (_(" Number TAG\n")); + /* This section is 64-bit DWARF 3. */ + SAFE_BYTE_GET_AND_INC (length, hdrptr, 8, end); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + if (length + initial_length_size > section->size) + return NULL; - for (entry = first_abbrev; entry; entry = entry->next) - { - abbrev_attr *attr; + SAFE_BYTE_GET_AND_INC (version, hdrptr, 2, end); + if (version != 2 && version != 3 && version != 4) + return NULL; + hdrptr += offset_size + 1;/* Skip prologue_length and min_insn_length. */ + if (version >= 4) + hdrptr++; /* Skip max_ops_per_insn. */ + hdrptr += 3; /* Skip default_is_stmt, line_base, line_range. */ - printf (_(" %ld %s [%s]\n"), - entry->entry, - get_TAG_name (entry->tag), - entry->children ? _("has children") : _("no children")); + SAFE_BYTE_GET_AND_INC (opcode_base, hdrptr, 1, end); + if (opcode_base == 0) + return NULL; - for (attr = entry->first_attr; attr; attr = attr->next) - printf (_(" %-18s %s\n"), - get_AT_name (attr->attribute), - get_FORM_name (attr->form)); - } + hdrptr += opcode_base - 1; + dirtable = hdrptr; + /* Skip over dirname table. */ + while (*hdrptr != '\0') + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + hdrptr++; /* Skip the NUL at the end of the table. */ + /* Now skip over preceding filename table entries. */ + for (; *hdrptr != '\0' && fileidx > 1; fileidx--) + { + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; } - while (start); - - printf ("\n"); - - return 1; + if (hdrptr == end || *hdrptr == '\0') + return NULL; + file_name = hdrptr; + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + diridx = read_uleb128 (hdrptr, &bytes_read, end); + if (diridx == 0) + return file_name; + for (; *dirtable != '\0' && diridx > 1; diridx--) + dirtable += strnlen ((char *) dirtable, end - dirtable) + 1; + if (*dirtable == '\0') + return NULL; + *dir_name = dirtable; + return file_name; } static int -display_debug_loc (struct dwarf_section *section, void *file) +display_debug_macro (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; + unsigned char *end = start + section->size; + unsigned char *curr = start; + unsigned char *extended_op_buf[256]; + unsigned int bytes_read; - bytes = section->size; - section_end = start + bytes; + load_debug_section (str, file); + load_debug_section (line, file); - if (bytes == 0) - { - printf (_("\nThe %s section is empty.\n"), section->name); - return 0; - } + printf (_("Contents of the %s section:\n\n"), section->name); - if (load_debug_info (file) == 0) + while (curr < end) { - warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), - section->name); - return 0; - } + unsigned int lineno, version, flags; + unsigned int offset_size = 4; + const unsigned char *string; + dwarf_vma line_offset = 0, sec_offset = curr - start, offset; + unsigned char **extended_ops = NULL; + + SAFE_BYTE_GET_AND_INC (version, curr, 2, end); + if (version != 4) + { + error (_("Only GNU extension to DWARF 4 of %s is currently supported.\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) + SAFE_BYTE_GET_AND_INC (flags, curr, 1, end); + if (flags & 1) + offset_size = 8; + printf (_(" Offset: 0x%lx\n"), + (unsigned long) sec_offset); + printf (_(" Version: %d\n"), version); + printf (_(" Offset size: %d\n"), offset_size); + if (flags & 2) { - 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; + SAFE_BYTE_GET_AND_INC (line_offset, curr, offset_size, end); + printf (_(" Offset into .debug_line: 0x%lx\n"), + (unsigned long) line_offset); + } + if (flags & 4) + { + unsigned int i, count, op; + dwarf_vma nargs, n; - for (; j < num; j++) + SAFE_BYTE_GET_AND_INC (count, curr, 1, end); + + memset (extended_op_buf, 0, sizeof (extended_op_buf)); + extended_ops = extended_op_buf; + if (count) { - if (last_offset > - debug_information [i].loc_offsets [j]) + printf (_(" Extension opcode arguments:\n")); + for (i = 0; i < count; i++) { - use_debug_info = 0; - break; + SAFE_BYTE_GET_AND_INC (op, curr, 1, end); + extended_ops[op] = curr; + nargs = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + if (nargs == 0) + printf (_(" DW_MACRO_GNU_%02x has no arguments\n"), op); + else + { + printf (_(" DW_MACRO_GNU_%02x arguments: "), op); + for (n = 0; n < nargs; n++) + { + unsigned int form; + + SAFE_BYTE_GET_AND_INC (form, curr, 1, end); + printf ("%s%s", get_FORM_name (form), + n == nargs - 1 ? "\n" : ", "); + switch (form) + { + case DW_FORM_data1: + case DW_FORM_data2: + case DW_FORM_data4: + case DW_FORM_data8: + case DW_FORM_sdata: + case DW_FORM_udata: + case DW_FORM_block: + case DW_FORM_block1: + case DW_FORM_block2: + case DW_FORM_block4: + case DW_FORM_flag: + case DW_FORM_string: + case DW_FORM_strp: + case DW_FORM_sec_offset: + break; + default: + error (_("Invalid extension opcode form %s\n"), + get_FORM_name (form)); + return 0; + } + } + } } - 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; + printf ("\n"); - for (j = 0; j < debug_information [i].num_loc_offsets; j++) + while (1) { - 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; + unsigned int op; - if (!seen_first_offset) - seen_first_offset = 1; - else + if (curr >= end) { - if (start < next) - warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), - (long)(start - section_begin), (long)(next - section_begin)); - else if (start > next) - warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), - (long)(start - section_begin), (long)(next - section_begin)); + error (_(".debug_macro section not zero terminated\n")); + return 0; } - start = next; - if (offset >= bytes) - { - warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), - offset); - continue; - } + SAFE_BYTE_GET_AND_INC (op, curr, 1, end); + if (op == 0) + break; - while (1) + switch (op) { - 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 (_("\n")); - break; - } + case DW_MACRO_GNU_start_file: + { + unsigned int filenum; + unsigned char *file_name = NULL, *dir_name = NULL; + + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + filenum = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + + if ((flags & 2) == 0) + error (_("DW_MACRO_GNU_start_file used, but no .debug_line offset provided.\n")); + else + file_name + = get_line_filename_and_dirname (line_offset, filenum, + &dir_name); + if (file_name == NULL) + printf (_(" DW_MACRO_GNU_start_file - lineno: %d filenum: %d\n"), + lineno, filenum); + else + printf (_(" DW_MACRO_GNU_start_file - lineno: %d filenum: %d filename: %s%s%s\n"), + lineno, filenum, + dir_name != NULL ? (const char *) dir_name : "", + dir_name != NULL ? "/" : "", file_name); + } + 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; - } + case DW_MACRO_GNU_end_file: + printf (_(" DW_MACRO_GNU_end_file\n")); + break; - if (start + 2 > section_end) - { - warn (_("Location list starting at offset 0x%lx is not terminated.\n"), - offset); - break; - } + case DW_MACRO_GNU_define: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; + printf (_(" DW_MACRO_GNU_define - lineno : %d macro : %s\n"), + lineno, string); + break; - length = byte_get (start, 2); - start += 2; + case DW_MACRO_GNU_undef: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; + printf (_(" DW_MACRO_GNU_undef - lineno : %d macro : %s\n"), + lineno, string); + break; - if (start + length > section_end) - { - warn (_("Location list starting at offset 0x%lx is not terminated.\n"), - offset); - break; - } + case DW_MACRO_GNU_define_indirect: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + string = fetch_indirect_string (offset); + printf (_(" DW_MACRO_GNU_define_indirect - lineno : %d macro : %s\n"), + lineno, string); + break; - print_dwarf_vma (begin + base_address, pointer_size); - print_dwarf_vma (end + base_address, pointer_size); + case DW_MACRO_GNU_undef_indirect: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + string = fetch_indirect_string (offset); + printf (_(" DW_MACRO_GNU_undef_indirect - lineno : %d macro : %s\n"), + lineno, string); + break; - putchar ('('); - need_frame_base = decode_location_expression (start, - pointer_size, - length, - cu_offset); - putchar (')'); + case DW_MACRO_GNU_transparent_include: + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_GNU_transparent_include - offset : 0x%lx\n"), + (unsigned long) offset); + break; - if (need_frame_base && !has_frame_base) - printf (_(" [without DW_AT_frame_base]")); + case DW_MACRO_GNU_define_indirect_alt: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_GNU_define_indirect_alt - lineno : %d macro offset : 0x%lx\n"), + lineno, (unsigned long) offset); + break; - if (begin == end) - fputs (_(" (start == end)"), stdout); - else if (begin > end) - fputs (_(" (start > end)"), stdout); + case DW_MACRO_GNU_undef_indirect_alt: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_GNU_undef_indirect_alt - lineno : %d macro offset : 0x%lx\n"), + lineno, (unsigned long) offset); + break; - putchar ('\n'); + case DW_MACRO_GNU_transparent_include_alt: + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_GNU_transparent_include_alt - offset : 0x%lx\n"), + (unsigned long) offset); + break; - start += length; + default: + if (extended_ops == NULL || extended_ops[op] == NULL) + { + error (_(" Unknown macro opcode %02x seen\n"), op); + return 0; + } + else + { + /* Skip over unhandled opcodes. */ + dwarf_vma nargs, n; + unsigned char *desc = extended_ops[op]; + nargs = read_uleb128 (desc, &bytes_read, end); + desc += bytes_read; + if (nargs == 0) + { + printf (_(" DW_MACRO_GNU_%02x\n"), op); + break; + } + printf (_(" DW_MACRO_GNU_%02x -"), op); + for (n = 0; n < nargs; n++) + { + int val; + + SAFE_BYTE_GET_AND_INC (val, desc, 1, end); + curr + = read_and_display_attr_value (0, val, + curr, end, 0, 0, offset_size, + version, NULL, 0, NULL, + NULL); + if (n != nargs - 1) + printf (","); + } + printf ("\n"); + } + break; } } + + printf ("\n"); } - if (start < section_end) - warn (_("There are %ld unused bytes at the end of section %s\n"), - (long) (section_end - start), section->name); return 1; } static int -display_debug_str (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +display_debug_abbrev (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) { + abbrev_entry *entry; 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; - } + unsigned char *end = start + section->size; printf (_("Contents of the %s section:\n\n"), section->name); - while (bytes) + do { - int j; - int k; - int lbytes; + unsigned char *last; - lbytes = (bytes > 16 ? 16 : bytes); + free_abbrevs (); - printf (" 0x%8.8lx ", (unsigned long) addr); + last = start; + start = process_abbrev_section (start, end); - for (j = 0; j < 16; j++) - { - if (j < lbytes) - printf ("%2.2x", start[j]); - else - printf (" "); + if (first_abbrev == NULL) + continue; - if ((j & 3) == 3) - printf (" "); - } + printf (_(" Number TAG (0x%lx)\n"), (long) (last - section->start)); - for (j = 0; j < lbytes; j++) + for (entry = first_abbrev; entry; entry = entry->next) { - k = start[j]; - if (k >= ' ' && k < 0x80) - printf ("%c", k); - else - printf ("."); - } + abbrev_attr *attr; - putchar ('\n'); + printf (" %ld %s [%s]\n", + entry->entry, + get_TAG_name (entry->tag), + entry->children ? _("has children") : _("no children")); - start += lbytes; - addr += lbytes; - bytes -= lbytes; + 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); - putchar ('\n'); + printf ("\n"); return 1; } -static int -display_debug_info (struct dwarf_section *section, void *file) -{ - return process_debug_info (section, file, 0); -} - +/* Display a location list from a normal (ie, non-dwo) .debug_loc section. */ -static int -display_debug_aranges (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +static void +display_loc_list (struct dwarf_section *section, + unsigned char **start_ptr, + unsigned int debug_info_entry, + unsigned long offset, + unsigned long base_address, + int has_frame_base) { - unsigned char *start = section->start; - unsigned char *end = start + section->size; - - printf (_("The section %s contains:\n\n"), section->name); + unsigned char *start = *start_ptr; + unsigned char *section_end = section->start + section->size; + unsigned long cu_offset; + unsigned int pointer_size; + unsigned int offset_size; + int dwarf_version; + + dwarf_vma begin; + dwarf_vma end; + unsigned short length; + int need_frame_base; + + if (debug_info_entry >= num_debug_info_entries) + { + warn (_("No debug information available for loc lists of entry: %u\n"), + debug_info_entry); + return; + } - /* It does not matter if this load fails, - we test for that later on. */ - load_debug_info (file); + cu_offset = debug_information [debug_info_entry].cu_offset; + pointer_size = debug_information [debug_info_entry].pointer_size; + offset_size = debug_information [debug_info_entry].offset_size; + dwarf_version = debug_information [debug_info_entry].dwarf_version; - while (start < end) + if (pointer_size < 2 || pointer_size > 8) { - 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; + warn (_("Invalid pointer size (%d) in debug info for entry %d\n"), + pointer_size, debug_info_entry); + return; + } - arange.ar_length = byte_get (hdrptr, 4); - hdrptr += 4; + while (1) + { + unsigned long off = offset + (start - *start_ptr); - if (arange.ar_length == 0xffffffff) - { - arange.ar_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; - } - else + if (start + 2 * pointer_size > section_end) { - offset_size = 4; - initial_length_size = 4; + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; } - arange.ar_version = byte_get (hdrptr, 2); - hdrptr += 2; + printf (" %8.8lx ", off); - arange.ar_info_offset = byte_get (hdrptr, offset_size); - hdrptr += offset_size; + /* 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. */ + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, section_end); + SAFE_BYTE_GET_AND_INC (end, start, pointer_size, section_end); - 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; + if (begin == 0 && end == 0) + { + /* PR 18374: In a object file we can have a location list that + starts with a begin and end of 0 because there are relocations + that need to be applied to the addresses. Actually applying + the relocations now does not help as they will probably resolve + to 0, since the object file has not been fully linked. Real + end of list markers will not have any relocations against them. */ + if (! reloc_at (section, off) + && ! reloc_at (section, off + pointer_size)) + { + printf (_("\n")); + break; + } + } - arange.ar_segment_size = byte_get (hdrptr, 1); - hdrptr += 1; + /* 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 (arange.ar_version != 2 && arange.ar_version != 3) + if (start + 2 > section_end) { - warn (_("Only DWARF 2 and 3 aranges are currently supported.\n")); + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); 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; + SAFE_BYTE_GET_AND_INC (length, start, 2, section_end); - /* 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) + if (start + length > section_end) { - warn (_("Pointer size + Segment size is not a power of two.\n")); + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); 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; + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); - while (ranges + 2 * address_size <= start) - { - address = byte_get (ranges, address_size); + putchar ('('); + need_frame_base = decode_location_expression (start, + pointer_size, + offset_size, + dwarf_version, + length, + cu_offset, section); + putchar (')'); - ranges += address_size; + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); - length = byte_get (ranges, address_size); + if (begin == end) + fputs (_(" (start == end)"), stdout); + else if (begin > end) + fputs (_(" (start > end)"), stdout); - ranges += address_size; + putchar ('\n'); - print_dwarf_vma (address, address_size); - print_dwarf_vma (length, address_size); - putchar ('\n'); - } + start += length; } - printf ("\n"); + *start_ptr = start; +} - return 1; +/* Print a .debug_addr table index in decimal, surrounded by square brackets, + right-adjusted in a field of length LEN, and followed by a space. */ + +static void +print_addr_index (unsigned int idx, unsigned int len) +{ + static char buf[15]; + snprintf (buf, sizeof (buf), "[%d]", idx); + printf ("%*s ", len, buf); } -static int -display_debug_ranges (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +/* Display a location list from a .dwo section. It uses address indexes rather + than embedded addresses. This code closely follows display_loc_list, but the + two are sufficiently different that combining things is very ugly. */ + +static void +display_loc_list_dwo (struct dwarf_section *section, + unsigned char **start_ptr, + unsigned int debug_info_entry, + unsigned long offset, + int has_frame_base) +{ + unsigned char *start = *start_ptr; + unsigned char *section_end = section->start + section->size; + unsigned long cu_offset; + unsigned int pointer_size; + unsigned int offset_size; + int dwarf_version; + int entry_type; + unsigned short length; + int need_frame_base; + unsigned int idx; + unsigned int bytes_read; + + if (debug_info_entry >= num_debug_info_entries) + { + warn (_("No debug information for loc lists of entry: %u\n"), + debug_info_entry); + return; + } + + cu_offset = debug_information [debug_info_entry].cu_offset; + pointer_size = debug_information [debug_info_entry].pointer_size; + offset_size = debug_information [debug_info_entry].offset_size; + dwarf_version = debug_information [debug_info_entry].dwarf_version; + + if (pointer_size < 2 || pointer_size > 8) + { + warn (_("Invalid pointer size (%d) in debug info for entry %d\n"), + pointer_size, debug_info_entry); + return; + } + + while (1) + { + printf (" %8.8lx ", offset + (start - *start_ptr)); + + if (start >= section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + SAFE_BYTE_GET_AND_INC (entry_type, start, 1, section_end); + switch (entry_type) + { + case 0: /* A terminating entry. */ + *start_ptr = start; + printf (_("\n")); + return; + case 1: /* A base-address entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + printf (" "); + printf (_("(base address selection entry)\n")); + continue; + case 2: /* A start/end entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + break; + case 3: /* A start/length entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + break; + case 4: /* An offset pair entry. */ + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + break; + default: + warn (_("Unknown location list entry type 0x%x.\n"), entry_type); + *start_ptr = start; + return; + } + + if (start + 2 > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + SAFE_BYTE_GET_AND_INC (length, start, 2, section_end); + if (start + length > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + putchar ('('); + need_frame_base = decode_location_expression (start, + pointer_size, + offset_size, + dwarf_version, + length, + cu_offset, section); + putchar (')'); + + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); + + putchar ('\n'); + + start += length; + } + + *start_ptr = start; +} + +/* Sort array of indexes in ascending order of loc_offsets[idx]. */ + +static dwarf_vma *loc_offsets; + +static int +loc_offsets_compar (const void *ap, const void *bp) +{ + dwarf_vma a = loc_offsets[*(const unsigned int *) ap]; + dwarf_vma b = loc_offsets[*(const unsigned int *) bp]; + + return (a > b) - (b > a); +} + +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_range_list = 0; + 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; + int locs_sorted = 1; unsigned char *next; + unsigned int *array = NULL; + const char *suffix = strrchr (section->name, '.'); + int is_dwo = 0; + + if (suffix && strcmp (suffix, ".dwo") == 0) + is_dwo = 1; bytes = section->size; - section_end = start + bytes; if (bytes == 0) { @@ -2993,23 +4646,24 @@ display_debug_ranges (struct dwarf_section *section, return 0; } - /* Check the order of range list in .debug_info section. If - offsets of range lists are in the ascending order, we can + /* 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_range_lists; - num_range_list += num; + num = debug_information [i].num_loc_offsets; + if (num > num_loc_list) + num_loc_list = num; /* Check if we can use `debug_information' directly. */ - if (use_debug_info && num != 0) + if (locs_sorted && num != 0) { if (!seen_first_offset) { - /* This is the first range list. */ - last_offset = debug_information [i].range_lists [0]; + /* This is the first location list. */ + last_offset = debug_information [i].loc_offsets [0]; first = i; seen_first_offset = 1; j = 1; @@ -3020,47 +4674,59 @@ display_debug_ranges (struct dwarf_section *section, for (; j < num; j++) { if (last_offset > - debug_information [i].range_lists [j]) + debug_information [i].loc_offsets [j]) { - use_debug_info = 0; + locs_sorted = 0; break; } - last_offset = debug_information [i].range_lists [j]; + last_offset = debug_information [i].loc_offsets [j]; } } } - if (!use_debug_info) - /* FIXME: Should we handle this case? */ - error (_("Range lists in .debug_info section aren't in ascending order!\n")); - if (!seen_first_offset) - error (_("No range lists in .debug_info section!\n")); + error (_("No location lists in .debug_info section!\n")); - /* DWARF sections under Mach-O have non-zero addresses. */ - if (debug_information [first].num_range_lists > 0 - && debug_information [first].range_lists [0] != section->address) - warn (_("Range lists in %s section start at 0x%lx\n"), - section->name, debug_information [first].range_lists [0]); + if (debug_information [first].num_loc_offsets > 0 + && debug_information [first].loc_offsets [0] != 0) + warn (_("Location lists in %s section start at 0x%s\n"), + section->name, + dwarf_vmatoa ("x", debug_information [first].loc_offsets [0])); + if (!locs_sorted) + array = (unsigned int *) xcmalloc (num_loc_list, sizeof (unsigned int)); printf (_("Contents of the %s section:\n\n"), section->name); - printf (_(" Offset Begin End\n")); + if (reloc_at (section, 0)) + printf (_(" Warning: This section has relocations - addresses seen here may not be accurate.\n\n")); + 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 long offset; - unsigned int pointer_size; unsigned long base_address; + unsigned int k; + int has_frame_base; - pointer_size = debug_information [i].pointer_size; + if (!locs_sorted) + { + for (k = 0; k < debug_information [i].num_loc_offsets; k++) + array[k] = k; + loc_offsets = debug_information [i].loc_offsets; + qsort (array, debug_information [i].num_loc_offsets, + sizeof (*array), loc_offsets_compar); + } - for (j = 0; j < debug_information [i].num_range_lists; j++) + for (k = 0; k < debug_information [i].num_loc_offsets; k++) { - /* DWARF sections under Mach-O have non-zero addresses. */ - offset = debug_information [i].range_lists [j] - section->address; + j = locs_sorted ? k : array[k]; + if (k + && debug_information [i].loc_offsets [locs_sorted + ? k - 1 : array [k - 1]] + == debug_information [i].loc_offsets [j]) + continue; + has_frame_base = debug_information [i].have_frame_base [j]; + offset = debug_information [i].loc_offsets [j]; next = section_begin + offset; base_address = debug_information [i].base_address; @@ -3069,1021 +4735,2572 @@ display_debug_ranges (struct dwarf_section *section, else { if (start < next) - warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), - (long)(start - section_begin), - (long)(next - section_begin), section->name); + warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) offset); else if (start > next) - warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), - (long)(start - section_begin), - (long)(next - section_begin), section->name); + warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) offset); } start = next; - while (1) + if (offset >= bytes) { - /* 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 (_("\n")); - break; - } - - print_dwarf_vma (begin, pointer_size); - print_dwarf_vma (end, pointer_size); - - /* Check base address specifiers. */ - if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) - { - base_address = end; - printf ("(base address)\n"); - continue; - } - - if (begin == end) - fputs (_("(start == end)"), stdout); - else if (begin > end) - fputs (_("(start > end)"), stdout); - - putchar ('\n'); + warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), + offset); + continue; } + + if (is_dwo) + display_loc_list_dwo (section, &start, i, offset, has_frame_base); + else + display_loc_list (section, &start, i, offset, base_address, + has_frame_base); } } + + if (start < section->start + section->size) + warn (_("There are %ld unused bytes at the end of section %s\n"), + (long) (section->start + section->size - start), section->name); putchar ('\n'); + free (array); return 1; } -typedef struct Frame_Chunk -{ - struct Frame_Chunk *next; - unsigned char *chunk_start; - int ncols; - /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */ - short int *col_type; - int *col_offset; - char *augmentation; - unsigned int code_factor; - int data_factor; - unsigned long pc_begin; - unsigned long pc_range; - int cfa_reg; - int cfa_offset; - int ra; - unsigned char fde_encoding; - unsigned char cfa_exp; -} -Frame_Chunk; - -/* A marker for a col_type that means this column was never referenced - in the frame info. */ -#define DW_CFA_unreferenced (-1) - -static void -frame_need_space (Frame_Chunk *fc, int reg) +static int +display_debug_str (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) { - int prev = fc->ncols; + unsigned char *start = section->start; + unsigned long bytes = section->size; + dwarf_vma addr = section->address; - if (reg < fc->ncols) - return; + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } - fc->ncols = reg + 1; - fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int)); - fc->col_offset = xcrealloc (fc->col_offset, fc->ncols, sizeof (int)); + printf (_("Contents of the %s section:\n\n"), section->name); - while (prev < fc->ncols) + while (bytes) { - fc->col_type[prev] = DW_CFA_unreferenced; - fc->col_offset[prev] = 0; - prev++; - } -} + int j; + int k; + int lbytes; -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", - NULL, NULL, NULL, - "ymm0", "ymm1", "ymm2", "ymm3", - "ymm4", "ymm5", "ymm6", "ymm7" -}; + lbytes = (bytes > 16 ? 16 : bytes); -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", - NULL, NULL, NULL, - "ymm0", "ymm1", "ymm2", "ymm3", - "ymm4", "ymm5", "ymm6", "ymm7", - "ymm8", "ymm9", "ymm10", "ymm11", - "ymm12", "ymm13", "ymm14", "ymm15" -}; + printf (" 0x%8.8lx ", (unsigned long) addr); -static const char *const *dwarf_regnames; -static unsigned int dwarf_regnames_count; + for (j = 0; j < 16; j++) + { + if (j < lbytes) + printf ("%2.2x", start[j]); + else + printf (" "); -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; + if ((j & 3) == 3) + printf (" "); + } - case EM_X86_64: - dwarf_regnames = dwarf_regnames_x86_64; - dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64); - break; + for (j = 0; j < lbytes; j++) + { + k = start[j]; + if (k >= ' ' && k < 0x80) + printf ("%c", k); + else + printf ("."); + } - default: - break; + putchar ('\n'); + + start += lbytes; + addr += lbytes; + bytes -= lbytes; } + + putchar ('\n'); + + return 1; } -static const char * -regname (unsigned int regno, int row) +static int +display_debug_info (struct dwarf_section *section, void *file) { - 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; + return process_debug_info (section, file, section->abbrev_sec, 0, 0); } -static void -frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs) +static int +display_debug_types (struct dwarf_section *section, void *file) { - int r; - char tmp[100]; + return process_debug_info (section, file, section->abbrev_sec, 0, 1); +} - if (*max_regs < fc->ncols) - *max_regs = fc->ncols; +static int +display_trace_info (struct dwarf_section *section, void *file) +{ + return process_debug_info (section, file, section->abbrev_sec, 0, 0); +} - if (*need_col_headers) - { - static const char *loc = " LOC"; +static int +display_debug_aranges (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; - *need_col_headers = 0; + printf (_("Contents of the %s section:\n\n"), section->name); - printf ("%-*s CFA ", eh_addr_size * 2, loc); + /* It does not matter if this load fails, + we test for that later on. */ + load_debug_info (file); - 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)); - } + while (start < end) + { + unsigned char *hdrptr; + DWARF2_Internal_ARange arange; + unsigned char *addr_ranges; + dwarf_vma length; + dwarf_vma address; + unsigned char address_size; + int excess; + unsigned int offset_size; + unsigned int initial_length_size; - printf ("\n"); + hdrptr = start; + + SAFE_BYTE_GET_AND_INC (arange.ar_length, hdrptr, 4, end); + if (arange.ar_length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (arange.ar_length, hdrptr, 8, end); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + SAFE_BYTE_GET_AND_INC (arange.ar_version, hdrptr, 2, end); + SAFE_BYTE_GET_AND_INC (arange.ar_info_offset, hdrptr, offset_size, end); + + 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"), + (unsigned long) arange.ar_info_offset, section->name); + + SAFE_BYTE_GET_AND_INC (arange.ar_pointer_size, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (arange.ar_segment_size, hdrptr, 1, end); + + 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"), + (long) arange.ar_length); + printf (_(" Version: %d\n"), arange.ar_version); + printf (_(" Offset into .debug_info: 0x%lx\n"), + (unsigned long) 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; + + /* PR 17512: file: 001-108546-0.001:0.1. */ + if (address_size == 0 || address_size > 8) + { + error (_("Invalid address size in %s section!\n"), + section->name); + break; + } + + /* 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")); + + addr_ranges = hdrptr; + + /* Must pad to an alignment boundary that is twice the address size. */ + excess = (hdrptr - start) % (2 * address_size); + if (excess) + addr_ranges += (2 * address_size) - excess; + + hdrptr = start + arange.ar_length + initial_length_size; + if (hdrptr < start || hdrptr > end) + { + error (_("Excessive header length: %lx\n"), (long) arange.ar_length); + break; + } + start = hdrptr; + + while (addr_ranges + 2 * address_size <= start) + { + SAFE_BYTE_GET_AND_INC (address, addr_ranges, address_size, end); + SAFE_BYTE_GET_AND_INC (length, addr_ranges, address_size, end); + + printf (" "); + print_dwarf_vma (address, address_size); + print_dwarf_vma (length, address_size); + putchar ('\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); + printf ("\n"); - for (r = 0; r < fc->ncols; r++) + return 1; +} + +/* Comparison function for qsort. */ +static int +comp_addr_base (const void * v0, const void * v1) +{ + debug_info * info0 = (debug_info *) v0; + debug_info * info1 = (debug_info *) v1; + return info0->addr_base - info1->addr_base; +} + +/* Display the debug_addr section. */ +static int +display_debug_addr (struct dwarf_section *section, + void *file) +{ + debug_info **debug_addr_info; + unsigned char *entry; + unsigned char *end; + unsigned int i; + unsigned int count; + + if (section->size == 0) { - if (fc->col_type[r] != DW_CFA_unreferenced) + 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; + } + + printf (_("Contents of the %s section:\n\n"), section->name); + + /* PR 17531: file: cf38d01b. + We use xcalloc because a corrupt file may not have initialised all of the + fields in the debug_info structure, which means that the sort below might + try to move uninitialised data. */ + debug_addr_info = (debug_info **) xcalloc ((num_debug_info_entries + 1), + sizeof (debug_info *)); + + count = 0; + for (i = 0; i < num_debug_info_entries; i++) + if (debug_information [i].addr_base != DEBUG_INFO_UNAVAILABLE) + { + /* PR 17531: file: cf38d01b. */ + if (debug_information[i].addr_base >= section->size) + warn (_("Corrupt address base (%lx) found in debug section %u\n"), + (unsigned long) debug_information[i].addr_base, i); + else + debug_addr_info [count++] = debug_information + i; + } + + /* Add a sentinel to make iteration convenient. */ + debug_addr_info [count] = (debug_info *) xmalloc (sizeof (debug_info)); + debug_addr_info [count]->addr_base = section->size; + qsort (debug_addr_info, count, sizeof (debug_info *), comp_addr_base); + + for (i = 0; i < count; i++) + { + unsigned int idx; + unsigned int address_size = debug_addr_info [i]->pointer_size; + + printf (_(" For compilation unit at offset 0x%s:\n"), + dwarf_vmatoa ("x", debug_addr_info [i]->cu_offset)); + + printf (_("\tIndex\tAddress\n")); + entry = section->start + debug_addr_info [i]->addr_base; + end = section->start + debug_addr_info [i + 1]->addr_base; + idx = 0; + while (entry < end) { - 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); + dwarf_vma base = byte_get (entry, address_size); + printf (_("\t%d:\t"), idx); + print_dwarf_vma (base, address_size); + printf ("\n"); + entry += address_size; + idx++; } } printf ("\n"); + + free (debug_addr_info); + return 1; } +/* Display the .debug_str_offsets and .debug_str_offsets.dwo sections. */ static int -size_of_encoded_value (int encoding) +display_debug_str_offsets (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) { - switch (encoding & 0x7) + if (section->size == 0) { - default: /* ??? */ - case 0: return eh_addr_size; - case 2: return 2; - case 3: return 4; - case 4: return 8; + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; } + /* TODO: Dump the contents. This is made somewhat difficult by not knowing + what the offset size is for this section. */ + return 1; } -static dwarf_vma -get_encoded_value (unsigned char *data, int encoding) +/* Each debug_information[x].range_lists[y] gets this representation for + sorting purposes. */ + +struct range_entry { - int size = size_of_encoded_value (encoding); + /* The debug_information[x].range_lists[y] value. */ + unsigned long ranges_offset; - if (encoding & DW_EH_PE_signed) - return byte_get_signed (data, size); - else - return byte_get (data, size); -} + /* Original debug_information to find parameters of the data. */ + debug_info *debug_info_p; +}; -#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 +/* Sort struct range_entry in ascending order of its RANGES_OFFSET. */ static int -display_debug_frames (struct dwarf_section *section, +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 *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; + unsigned char *last_start = start; + unsigned long bytes = section->size; + unsigned char *section_begin = start; + unsigned char *finish = start + bytes; + unsigned int num_range_list, i; + struct range_entry *range_entries, *range_entry_fill; - printf (_("The section %s contains:\n"), section->name); + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } - while (start < end) + if (load_debug_info (file) == 0) { - 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; + warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), + section->name); + return 0; + } - saved_start = start; - length = byte_get (start, 4); start += 4; + num_range_list = 0; + for (i = 0; i < num_debug_info_entries; i++) + num_range_list += debug_information [i].num_range_lists; - if (length == 0) - { - printf ("\n%08lx ZERO terminator\n\n", - (unsigned long)(saved_start - section_start)); - continue; - } + if (num_range_list == 0) + { + /* This can happen when the file was compiled with -gsplit-debug + which removes references to range lists from the primary .o file. */ + printf (_("No range lists in .debug_info section.\n")); + return 1; + } - if (length == 0xffffffff) + 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++) { - length = byte_get (start, 8); - start += 8; - offset_size = 8; - initial_length_size = 12; + range_entry_fill->ranges_offset = debug_info_p->range_lists[j]; + range_entry_fill->debug_info_p = debug_info_p; + range_entry_fill++; } - else + } + + qsort (range_entries, num_range_list, sizeof (*range_entries), + range_entry_compar); + + if (dwarf_check != 0 && range_entries[0].ranges_offset != 0) + 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; + offset = range_entry->ranges_offset; + next = section_begin + offset; + base_address = debug_info_p->base_address; + + /* PR 17512: file: 001-101485-0.001:0.1. */ + if (pointer_size < 2 || pointer_size > 8) { - offset_size = 4; - initial_length_size = 4; + warn (_("Corrupt pointer size (%d) in debug entry at offset %8.8lx\n"), + pointer_size, offset); + continue; } - block_end = saved_start + length + initial_length_size; - if (block_end > end) + if (dwarf_check != 0 && i > 0) { - warn ("Invalid length %#08lx in FDE at %#08lx\n", - length, (unsigned long)(saved_start - section_start)); - block_end = end; + 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) + { + if (next == last_start) + continue; + 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); + } } - cie_id = byte_get (start, offset_size); start += offset_size; + start = next; + last_start = next; - if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID)) + while (start < finish) { - int version; - - fc = xmalloc (sizeof (Frame_Chunk)); - memset (fc, 0, sizeof (Frame_Chunk)); + 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. */ + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, finish); + if (start >= finish) + break; + SAFE_SIGNED_BYTE_GET_AND_INC (end, start, pointer_size, finish); + + printf (" %8.8lx ", offset); + + if (begin == 0 && end == 0) + { + printf (_("\n")); + break; + } - fc->next = chunks; - chunks = fc; - fc->chunk_start = saved_start; - fc->ncols = 0; - fc->col_type = xmalloc (sizeof (short int)); - fc->col_offset = xmalloc (sizeof (int)); - frame_need_space (fc, max_regs - 1); + /* 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; + } - version = *start++; + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); - fc->augmentation = (char *) start; - start = (unsigned char *) strchr ((char *) start, '\0') + 1; + if (begin == end) + fputs (_("(start == end)"), stdout); + else if (begin > end) + fputs (_("(start > end)"), stdout); - if (fc->augmentation[0] == 'z') - { - fc->code_factor = LEB (); - fc->data_factor = SLEB (); - if (version == 1) - { - fc->ra = GET (1); + putchar ('\n'); + } + } + putchar ('\n'); + + free (range_entries); + + return 1; +} + +typedef struct Frame_Chunk +{ + struct Frame_Chunk *next; + unsigned char *chunk_start; + unsigned 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; + dwarf_vma pc_begin; + dwarf_vma pc_range; + int cfa_reg; + dwarf_vma cfa_offset; + unsigned int ra; + unsigned char fde_encoding; + unsigned char cfa_exp; + unsigned char ptr_size; + unsigned char segment_size; +} +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 no 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) +{ + unsigned 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; + /* PR 17512: file: 10450-2643-0.004. + If reg == -1 then this can happen... */ + if (fc->ncols == 0) + return -1; + + /* PR 17512: file: 2844a11d. */ + if (fc->ncols > 1024) + { + error (_("Unfeasibly large register number: %u\n"), reg); + fc->ncols = 0; + /* FIXME: 1024 is an arbitrary limit. Increase it if + we ever encounter a valid binary that exceeds it. */ + return -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)); + /* PR 17512: file:002-10025-0.005. */ + if (fc->col_type == NULL || fc->col_offset == NULL) + { + error (_("Out of memory allocating %u columns in dwarf frame arrays\n"), + fc->ncols); + fc->ncols = 0; + return -1; + } + + 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", /* 0 - 3 */ + "esp", "ebp", "esi", "edi", /* 4 - 7 */ + "eip", "eflags", NULL, /* 8 - 10 */ + "st0", "st1", "st2", "st3", /* 11 - 14 */ + "st4", "st5", "st6", "st7", /* 15 - 18 */ + NULL, NULL, /* 19 - 20 */ + "xmm0", "xmm1", "xmm2", "xmm3", /* 21 - 24 */ + "xmm4", "xmm5", "xmm6", "xmm7", /* 25 - 28 */ + "mm0", "mm1", "mm2", "mm3", /* 29 - 32 */ + "mm4", "mm5", "mm6", "mm7", /* 33 - 36 */ + "fcw", "fsw", "mxcsr", /* 37 - 39 */ + "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, /* 40 - 47 */ + "tr", "ldtr", /* 48 - 49 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 50 - 57 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 58 - 65 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 66 - 73 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 74 - 81 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 82 - 89 */ + NULL, NULL, NULL, /* 90 - 92 */ + "k0", "k1", "k2", "k3", "k4", "k5", "k6", "k7" /* 93 - 100 */ +}; + +static const char *const dwarf_regnames_iamcu[] = +{ + "eax", "ecx", "edx", "ebx", /* 0 - 3 */ + "esp", "ebp", "esi", "edi", /* 4 - 7 */ + "eip", "eflags", NULL, /* 8 - 10 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 11 - 18 */ + NULL, NULL, /* 19 - 20 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 21 - 28 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 29 - 36 */ + NULL, NULL, NULL, /* 37 - 39 */ + "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, /* 40 - 47 */ + "tr", "ldtr", /* 48 - 49 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 50 - 57 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 58 - 65 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 66 - 73 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 74 - 81 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 82 - 89 */ + NULL, NULL, NULL, /* 90 - 92 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL /* 93 - 100 */ +}; + +void +init_dwarf_regnames_i386 (void) +{ + dwarf_regnames = dwarf_regnames_i386; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_i386); +} + +void +init_dwarf_regnames_iamcu (void) +{ + dwarf_regnames = dwarf_regnames_iamcu; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_iamcu); +} + +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", + "xmm16", "xmm17", "xmm18", "xmm19", + "xmm20", "xmm21", "xmm22", "xmm23", + "xmm24", "xmm25", "xmm26", "xmm27", + "xmm28", "xmm29", "xmm30", "xmm31", + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 83 - 90 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 91 - 98 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 99 - 106 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 107 - 114 */ + NULL, NULL, NULL, /* 115 - 117 */ + "k0", "k1", "k2", "k3", "k4", "k5", "k6", "k7" +}; + +void +init_dwarf_regnames_x86_64 (void) +{ + dwarf_regnames = dwarf_regnames_x86_64; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64); +} + +static const char *const dwarf_regnames_aarch64[] = +{ + "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", + "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", + "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23", + "x24", "x25", "x26", "x27", "x28", "x29", "x30", "sp", + NULL, "elr", NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", + "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", + "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", + "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", +}; + +void +init_dwarf_regnames_aarch64 (void) +{ + dwarf_regnames = dwarf_regnames_aarch64; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_aarch64); +} + +void +init_dwarf_regnames (unsigned int e_machine) +{ + switch (e_machine) + { + case EM_386: + init_dwarf_regnames_i386 (); + break; + + case EM_IAMCU: + init_dwarf_regnames_iamcu (); + break; + + case EM_X86_64: + case EM_L1OM: + case EM_K1OM: + init_dwarf_regnames_x86_64 (); + break; + + case EM_AARCH64: + init_dwarf_regnames_aarch64 (); + 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, unsigned int *max_regs) +{ + unsigned int r; + char tmp[100]; + + if (*max_regs < fc->ncols) + *max_regs = fc->ncols; + + if (*need_col_headers) + { + static const char *sloc = " LOC"; + + *need_col_headers = 0; + + printf ("%-*s CFA ", eh_addr_size * 2, sloc); + + 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"); + } + + print_dwarf_vma (fc->pc_begin, eh_addr_size); + if (fc->cfa_exp) + strcpy (tmp, "exp"); + else + sprintf (tmp, "%s%+d", regname (fc->cfa_reg, 1), (int) 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(VAR, N) SAFE_BYTE_GET_AND_INC (VAR, start, N, end) +#define LEB() read_uleb128 (start, & length_return, end); start += length_return +#define SLEB() read_sleb128 (start, & length_return, end); start += length_return + +static unsigned char * +read_cie (unsigned char *start, unsigned char *end, + Frame_Chunk **p_cie, int *p_version, + unsigned long *p_aug_len, unsigned char **p_aug) +{ + int version; + Frame_Chunk *fc; + unsigned int length_return; + unsigned char *augmentation_data = NULL; + unsigned long augmentation_data_len = 0; + + * p_cie = NULL; + /* PR 17512: file: 001-228113-0.004. */ + if (start >= end) + return end; + + fc = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); + memset (fc, 0, sizeof (Frame_Chunk)); + + fc->col_type = (short int *) xmalloc (sizeof (short int)); + fc->col_offset = (int *) xmalloc (sizeof (int)); + + version = *start++; + + fc->augmentation = (char *) start; + /* PR 17512: file: 001-228113-0.004. + Skip past augmentation name, but avoid running off the end of the data. */ + while (start < end) + if (* start ++ == '\0') + break; + if (start == end) + { + warn (_("No terminator for augmentation name\n")); + return start; + } + + if (strcmp (fc->augmentation, "eh") == 0) + start += eh_addr_size; + + if (version >= 4) + { + GET (fc->ptr_size, 1); + if (fc->ptr_size < 1 || fc->ptr_size > 8) + { + warn (_("Invalid pointer size (%d) in CIE data\n"), fc->ptr_size); + return end; + } + + GET (fc->segment_size, 1); + /* PR 17512: file: e99d2804. */ + if (fc->segment_size > 8 || fc->segment_size + fc->ptr_size > 8) + { + warn (_("Invalid segment size (%d) in CIE data\n"), fc->segment_size); + return end; + } + + eh_addr_size = fc->ptr_size; + } + else + { + fc->ptr_size = eh_addr_size; + fc->segment_size = 0; + } + fc->code_factor = LEB (); + fc->data_factor = SLEB (); + if (version == 1) + { + GET (fc->ra, 1); + } + else + { + fc->ra = LEB (); + } + + if (fc->augmentation[0] == 'z') + { + augmentation_data_len = LEB (); + augmentation_data = start; + start += augmentation_data_len; + /* PR 17512: file: 11042-2589-0.004. */ + if (start > end) + { + warn (_("Augmentation data too long: 0x%lx\n"), augmentation_data_len); + return end; + } + } + + if (augmentation_data_len) + { + unsigned char *p; + unsigned char *q; + unsigned char *qend; + + p = (unsigned char *) fc->augmentation + 1; + q = augmentation_data; + qend = q + augmentation_data_len; + + /* PR 17531: file: 015adfaa. */ + if (qend < q) + { + warn (_("Negative augmentation data length: 0x%lx"), augmentation_data_len); + augmentation_data_len = 0; + } + + while (p < end && q < augmentation_data + augmentation_data_len) + { + if (*p == 'L') + q++; + else if (*p == 'P') + q += 1 + size_of_encoded_value (*q); + else if (*p == 'R') + fc->fde_encoding = *q++; + else if (*p == 'S') + ; + else + break; + p++; + } + /* Note - it is OK if this loop terminates with q < qend. + Padding may have been inserted to align the end of the CIE. */ + } + + *p_cie = fc; + if (p_version) + *p_version = version; + if (p_aug_len) + { + *p_aug_len = augmentation_data_len; + *p_aug = augmentation_data; + } + return start; +} + +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, *forward_refs = 0; + Frame_Chunk *remembered_state = 0; + Frame_Chunk *rs; + int is_eh = strcmp (section->name, ".eh_frame") == 0; + unsigned int length_return; + unsigned int max_regs = 0; + const char *bad_reg = _("bad register: "); + unsigned int saved_eh_addr_size = eh_addr_size; + + printf (_("Contents of the %s section:\n"), section->name); + + while (start < end) + { + unsigned char *saved_start; + unsigned char *block_end; + dwarf_vma length; + dwarf_vma cie_id; + Frame_Chunk *fc; + Frame_Chunk *cie; + int need_col_headers = 1; + unsigned char *augmentation_data = NULL; + unsigned long augmentation_data_len = 0; + unsigned int encoded_ptr_size = saved_eh_addr_size; + unsigned int offset_size; + unsigned int initial_length_size; + + saved_start = start; + + SAFE_BYTE_GET_AND_INC (length, start, 4, end); + + if (length == 0) + { + printf ("\n%08lx ZERO terminator\n\n", + (unsigned long)(saved_start - section_start)); + /* Skip any zero terminators that directly follow. + A corrupt section size could have loaded a whole + slew of zero filled memory bytes. eg + PR 17512: file: 070-19381-0.004. */ + while (start < end && * start == 0) + ++ start; + continue; + } + + if (length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (length, start, 8, end); + 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 || block_end < start) + { + warn ("Invalid length 0x%s in FDE at %#08lx\n", + dwarf_vmatoa_1 (NULL, length, offset_size), + (unsigned long) (saved_start - section_start)); + block_end = end; + } + + SAFE_BYTE_GET_AND_INC (cie_id, start, offset_size, end); + + if (is_eh ? (cie_id == 0) : ((offset_size == 4 && cie_id == DW_CIE_ID) + || (offset_size == 8 && cie_id == DW64_CIE_ID))) + { + int version; + unsigned int mreg; + + start = read_cie (start, end, &cie, &version, + &augmentation_data_len, &augmentation_data); + /* PR 17512: file: 027-135133-0.005. */ + if (cie == NULL) + break; + + fc = cie; + fc->next = chunks; + chunks = fc; + fc->chunk_start = saved_start; + mreg = max_regs > 0 ? max_regs - 1 : 0; + if (mreg < fc->ra) + mreg = fc->ra; + if (frame_need_space (fc, mreg) < 0) + break; + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + + printf ("\n%08lx ", (unsigned long) (saved_start - section_start)); + print_dwarf_vma (length, fc->ptr_size); + print_dwarf_vma (cie_id, offset_size); + + if (do_debug_frames_interp) + { + printf ("CIE \"%s\" cf=%d df=%d ra=%d\n", fc->augmentation, + fc->code_factor, fc->data_factor, fc->ra); + } + else + { + printf ("CIE\n"); + printf (" Version: %d\n", version); + printf (" Augmentation: \"%s\"\n", fc->augmentation); + if (version >= 4) + { + printf (" Pointer Size: %u\n", fc->ptr_size); + printf (" Segment Size: %u\n", fc->segment_size); + } + 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) + /* FIXME: If do_wide is FALSE, then we should + add carriage returns at 80 columns... */ + printf (" %02x", augmentation_data[i]); + putchar ('\n'); + } + putchar ('\n'); + } + } + else + { + unsigned char *look_for; + static Frame_Chunk fde_fc; + unsigned long segment_selector; + + if (is_eh) + { + dwarf_vma sign = (dwarf_vma) 1 << (offset_size * 8 - 1); + look_for = start - 4 - ((cie_id ^ sign) - sign); + } + else + look_for = section_start + cie_id; + + if (look_for <= saved_start) + { + for (cie = chunks; cie ; cie = cie->next) + if (cie->chunk_start == look_for) + break; + } + else + { + for (cie = forward_refs; cie ; cie = cie->next) + if (cie->chunk_start == look_for) + break; + if (!cie) + { + unsigned int off_size; + unsigned char *cie_scan; + + cie_scan = look_for; + off_size = 4; + SAFE_BYTE_GET_AND_INC (length, cie_scan, 4, end); + if (length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (length, cie_scan, 8, end); + off_size = 8; + } + if (length != 0) + { + dwarf_vma c_id; + + SAFE_BYTE_GET_AND_INC (c_id, cie_scan, off_size, end); + if (is_eh + ? c_id == 0 + : ((off_size == 4 && c_id == DW_CIE_ID) + || (off_size == 8 && c_id == DW64_CIE_ID))) + { + int version; + unsigned int mreg; + + read_cie (cie_scan, end, &cie, &version, + &augmentation_data_len, &augmentation_data); + /* PR 17512: file: 3450-2098-0.004. */ + if (cie == NULL) + { + warn (_("Failed to read CIE information\n")); + break; + } + cie->next = forward_refs; + forward_refs = cie; + cie->chunk_start = look_for; + mreg = max_regs > 0 ? max_regs - 1 : 0; + if (mreg < cie->ra) + mreg = cie->ra; + if (frame_need_space (cie, mreg) < 0) + { + warn (_("Invalid max register\n")); + break; + } + if (cie->fde_encoding) + encoded_ptr_size + = size_of_encoded_value (cie->fde_encoding); + } + } + } + } + + fc = &fde_fc; + memset (fc, 0, sizeof (Frame_Chunk)); + + if (!cie) + { + warn ("Invalid CIE pointer 0x%s in FDE at %#08lx\n", + dwarf_vmatoa_1 (NULL, cie_id, offset_size), + (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)); + if (frame_need_space (fc, max_regs > 0 ? max_regs - 1 : 0) < 0) + { + warn (_("Invalid max register\n")); + break; + } + cie = fc; + fc->augmentation = ""; + fc->fde_encoding = 0; + fc->ptr_size = eh_addr_size; + fc->segment_size = 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->ptr_size = cie->ptr_size; + eh_addr_size = cie->ptr_size; + fc->segment_size = cie->segment_size; + 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; + if (frame_need_space (fc, max_regs > 0 ? max_regs - 1: 0) < 0) + { + warn (_("Invalid max register\n")); + break; + } + fc->fde_encoding = cie->fde_encoding; + } + + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + + segment_selector = 0; + if (fc->segment_size) + { + if (fc->segment_size > sizeof (segment_selector)) + { + /* PR 17512: file: 9e196b3e. */ + warn (_("Probably corrupt segment size: %d - using 4 instead\n"), fc->segment_size); + fc->segment_size = 4; + } + SAFE_BYTE_GET_AND_INC (segment_selector, start, fc->segment_size, end); + } + + fc->pc_begin = get_encoded_value (&start, fc->fde_encoding, section, end); + + /* FIXME: It appears that sometimes the final pc_range value is + encoded in less than encoded_ptr_size bytes. See the x86_64 + run of the "objcopy on compressed debug sections" test for an + example of this. */ + SAFE_BYTE_GET_AND_INC (fc->pc_range, start, encoded_ptr_size, end); + + if (cie->augmentation[0] == 'z') + { + augmentation_data_len = LEB (); + augmentation_data = start; + start += augmentation_data_len; + /* PR 17512: file: 722-8446-0.004. */ + if (start >= end || ((signed long) augmentation_data_len) < 0) + { + warn (_("Corrupt augmentation data length: %lx\n"), + augmentation_data_len); + start = end; + augmentation_data = NULL; + augmentation_data_len = 0; + } + } + + printf ("\n%08lx %s %s FDE cie=%08lx pc=", + (unsigned long)(saved_start - section_start), + dwarf_vmatoa_1 (NULL, length, fc->ptr_size), + dwarf_vmatoa_1 (NULL, cie_id, offset_size), + (unsigned long)(cie->chunk_start - section_start)); + + if (fc->segment_size) + printf ("%04lx:", segment_selector); + + printf ("%s..%s\n", + dwarf_vmatoa_1 (NULL, fc->pc_begin, fc->ptr_size), + dwarf_vmatoa_1 (NULL, fc->pc_begin + fc->pc_range, fc->ptr_size)); + + 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 int reg, op, opa; + unsigned long temp; + unsigned char * new_start; + + 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 (); + 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: + temp = LEB (); + new_start = start + temp; + if (new_start < start) + { + warn (_("Corrupt CFA_def expression value: %lu\n"), temp); + start = block_end; + } + else + start = new_start; + break; + case DW_CFA_expression: + case DW_CFA_val_expression: + reg = LEB (); + temp = LEB (); + new_start = start + temp; + if (new_start < start) + { + /* PR 17512: file:306-192417-0.005. */ + warn (_("Corrupt CFA expression value: %lu\n"), temp); + start = block_end; + } + else + start = new_start; + 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 char * tmp; + unsigned op, opa; + unsigned long ul, reg, roffs; + dwarf_vma l; + dwarf_vma 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 %s\n", + opa * fc->code_factor, + dwarf_vmatoa_1 (NULL, + fc->pc_begin + opa * fc->code_factor, + fc->ptr_size)); + 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]; + if (do_debug_frames_interp + && fc->col_type[opa] == DW_CFA_unreferenced) + fc->col_type[opa] = DW_CFA_undefined; } + break; + + case DW_CFA_set_loc: + vma = get_encoded_value (&start, fc->fde_encoding, section, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_set_loc: %s\n", + dwarf_vmatoa_1 (NULL, vma, fc->ptr_size)); + fc->pc_begin = vma; + break; + + case DW_CFA_advance_loc1: + SAFE_BYTE_GET_AND_INC (ofs, start, 1, end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc1: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc2: + SAFE_BYTE_GET_AND_INC (ofs, start, 2, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc2: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc4: + SAFE_BYTE_GET_AND_INC (ofs, start, 4, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); else + printf (" DW_CFA_advance_loc4: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + 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') { - fc->ra = LEB (); + printf (" DW_CFA_register: %s%s in ", + reg_prefix, regname (reg, 0)); + puts (regname (roffs, 0)); } - 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) + if (*reg_prefix == '\0') { - fc->ra = GET (1); + fc->col_type[reg] = DW_CFA_register; + fc->col_offset[reg] = roffs; } - else + 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->cfa_offset = fc->cfa_offset; + rs->cfa_reg = fc->cfa_reg; + rs->ra = fc->ra; + rs->cfa_exp = fc->cfa_exp; + rs->ncols = fc->ncols; + rs->col_type = (short int *) xcmalloc (rs->ncols, + sizeof (* rs->col_type)); + rs->col_offset = (int *) xcmalloc (rs->ncols, sizeof (* rs->col_offset)); + memcpy (rs->col_type, fc->col_type, rs->ncols * sizeof (* fc->col_type)); + memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (* fc->col_offset)); + 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) { - fc->ra = LEB (); + remembered_state = rs->next; + fc->cfa_offset = rs->cfa_offset; + fc->cfa_reg = rs->cfa_reg; + fc->ra = rs->ra; + fc->cfa_exp = rs->cfa_exp; + if (frame_need_space (fc, rs->ncols - 1) < 0) + { + warn (_("Invalid column number in saved frame state\n")); + fc->ncols = 0; + break; + } + memcpy (fc->col_type, rs->col_type, rs->ncols * sizeof (* rs->col_type)); + memcpy (fc->col_offset, rs->col_offset, + rs->ncols * sizeof (* rs->col_offset)); + free (rs->col_type); + free (rs->col_offset); + free (rs); } - } - else - { - fc->code_factor = LEB (); - fc->data_factor = SLEB (); - if (version == 1) + 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), (int) 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", (int) 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 (start >= block_end || start + ul > block_end || start + ul < start) { - fc->ra = GET (1); + printf (_(" DW_CFA_def_cfa_expression: \n"), ul); + break; } - else + if (! do_debug_frames_interp) { - fc->ra = LEB (); + printf (" DW_CFA_def_cfa_expression ("); + decode_location_expression (start, eh_addr_size, 0, -1, + ul, 0, section); + printf (")\n"); } - } - cie = fc; + fc->cfa_exp = 1; + start += ul; + break; - 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); + case DW_CFA_expression: + reg = LEB (); + ul = LEB (); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + /* PR 17512: file: 069-133014-0.006. */ + /* PR 17512: file: 98c02eb4. */ + tmp = start + ul; + if (start >= block_end || tmp > block_end || tmp < start) + { + printf (_(" DW_CFA_expression: \n"), ul); + break; + } + 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, 0, -1, + ul, 0, section); + printf (")\n"); + } + if (*reg_prefix == '\0') + fc->col_type[reg] = DW_CFA_expression; + start = tmp; + break; - if (augmentation_data_len) + case DW_CFA_val_expression: + reg = LEB (); + ul = LEB (); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + tmp = start + ul; + if (start >= block_end || tmp > block_end || tmp < start) { - unsigned long i; - printf (" Augmentation data: "); - for (i = 0; i < augmentation_data_len; ++i) - printf (" %02x", augmentation_data[i]); - putchar ('\n'); + printf (" DW_CFA_val_expression: \n", ul); + break; } - putchar ('\n'); - } + 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, 0, -1, + ul, 0, section); + printf (")\n"); + } + if (*reg_prefix == '\0') + fc->col_type[reg] = DW_CFA_val_expression; + start = tmp; + break; - if (augmentation_data_len) - { - unsigned char *p, *q; - p = (unsigned char *) fc->augmentation + 1; - q = augmentation_data; + 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), + (long)(l * fc->data_factor)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = l * fc->data_factor; + } + break; - while (1) + 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), + (long)(l * fc->data_factor)); + if (*reg_prefix == '\0') { - 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++; + fc->col_type[reg] = DW_CFA_val_offset; + fc->col_offset[reg] = l * fc->data_factor; } + break; - if (fc->fde_encoding) - encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); - } + 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), (int) fc->cfa_offset); + break; - frame_need_space (fc, fc->ra); - } - else - { - unsigned char *look_for; - static Frame_Chunk fde_fc; + case DW_CFA_def_cfa_offset_sf: + fc->cfa_offset = SLEB (); + fc->cfa_offset *= fc->data_factor; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_offset_sf: %d\n", (int) fc->cfa_offset); + break; - fc = & fde_fc; - memset (fc, 0, sizeof (Frame_Chunk)); + case DW_CFA_MIPS_advance_loc8: + SAFE_BYTE_GET_AND_INC (ofs, start, 8, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_MIPS_advance_loc8: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; - look_for = is_eh ? start - 4 - cie_id : section_start + cie_id; + case DW_CFA_GNU_window_save: + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_window_save\n"); + break; - for (cie = chunks; cie ; cie = cie->next) - if (cie->chunk_start == look_for) + case DW_CFA_GNU_args_size: + ul = LEB (); + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_args_size: %ld\n", ul); 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 = xmalloc (sizeof (short int)); - fc->col_offset = xmalloc (sizeof (int)); - frame_need_space (fc, max_regs - 1); - cie = fc; - fc->augmentation = ""; - fc->fde_encoding = 0; - } - else - { - fc->ncols = cie->ncols; - fc->col_type = xcmalloc (fc->ncols, sizeof (short int)); - fc->col_offset = xcmalloc (fc->ncols, sizeof (int)); - memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int)); - memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int)); - fc->augmentation = cie->augmentation; - fc->code_factor = cie->code_factor; - fc->data_factor = cie->data_factor; - fc->cfa_reg = cie->cfa_reg; - fc->cfa_offset = cie->cfa_offset; - fc->ra = cie->ra; - frame_need_space (fc, max_regs - 1); - fc->fde_encoding = cie->fde_encoding; + 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), + (long)(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; + eh_addr_size = saved_eh_addr_size; + } + + printf ("\n"); + + return 1; +} + +#undef GET +#undef LEB +#undef SLEB + +static int +display_gdb_index (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + uint32_t version; + uint32_t cu_list_offset, tu_list_offset; + uint32_t address_table_offset, symbol_table_offset, constant_pool_offset; + unsigned int cu_list_elements, tu_list_elements; + unsigned int address_table_size, symbol_table_slots; + unsigned char *cu_list, *tu_list; + unsigned char *address_table, *symbol_table, *constant_pool; + unsigned int i; + + /* The documentation for the format of this file is in gdb/dwarf2read.c. */ + + printf (_("Contents of the %s section:\n"), section->name); + + if (section->size < 6 * sizeof (uint32_t)) + { + warn (_("Truncated header in the %s section.\n"), section->name); + return 0; + } + + version = byte_get_little_endian (start, 4); + printf (_("Version %ld\n"), (long) version); + + /* Prior versions are obsolete, and future versions may not be + backwards compatible. */ + if (version < 3 || version > 8) + { + warn (_("Unsupported version %lu.\n"), (unsigned long) version); + return 0; + } + if (version < 4) + warn (_("The address table data in version 3 may be wrong.\n")); + if (version < 5) + warn (_("Version 4 does not support case insensitive lookups.\n")); + if (version < 6) + warn (_("Version 5 does not include inlined functions.\n")); + if (version < 7) + warn (_("Version 6 does not include symbol attributes.\n")); + /* Version 7 indices generated by Gold have bad type unit references, + PR binutils/15021. But we don't know if the index was generated by + Gold or not, so to avoid worrying users with gdb-generated indices + we say nothing for version 7 here. */ + + cu_list_offset = byte_get_little_endian (start + 4, 4); + tu_list_offset = byte_get_little_endian (start + 8, 4); + address_table_offset = byte_get_little_endian (start + 12, 4); + symbol_table_offset = byte_get_little_endian (start + 16, 4); + constant_pool_offset = byte_get_little_endian (start + 20, 4); + + if (cu_list_offset > section->size + || tu_list_offset > section->size + || address_table_offset > section->size + || symbol_table_offset > section->size + || constant_pool_offset > section->size) + { + warn (_("Corrupt header in the %s section.\n"), section->name); + return 0; + } + + /* PR 17531: file: 418d0a8a. */ + if (tu_list_offset < cu_list_offset) + { + warn (_("TU offset (%x) is less than CU offset (%x)\n"), + tu_list_offset, cu_list_offset); + return 0; + } + + cu_list_elements = (tu_list_offset - cu_list_offset) / 8; + + if (address_table_offset < tu_list_offset) + { + warn (_("Address table offset (%x) is less than TU offset (%x)\n"), + address_table_offset, tu_list_offset); + return 0; + } + + tu_list_elements = (address_table_offset - tu_list_offset) / 8; + + /* PR 17531: file: 18a47d3d. */ + if (symbol_table_offset < address_table_offset) + { + warn (_("Symbol table offset (%xl) is less then Address table offset (%x)\n"), + symbol_table_offset, address_table_offset); + return 0; + } + + address_table_size = symbol_table_offset - address_table_offset; + + if (constant_pool_offset < symbol_table_offset) + { + warn (_("Constant pool offset (%x) is less than symbol table offset (%x)\n"), + constant_pool_offset, symbol_table_offset); + return 0; + } + + symbol_table_slots = (constant_pool_offset - symbol_table_offset) / 8; + + cu_list = start + cu_list_offset; + tu_list = start + tu_list_offset; + address_table = start + address_table_offset; + symbol_table = start + symbol_table_offset; + constant_pool = start + constant_pool_offset; + + if (address_table + address_table_size * (2 + 8 + 4) > section->start + section->size) + { + warn (_("Address table extends beyond end of section.\n")); + return 0; + } + + printf (_("\nCU table:\n")); + for (i = 0; i < cu_list_elements; i += 2) + { + uint64_t cu_offset = byte_get_little_endian (cu_list + i * 8, 8); + uint64_t cu_length = byte_get_little_endian (cu_list + i * 8 + 8, 8); + + printf (_("[%3u] 0x%lx - 0x%lx\n"), i / 2, + (unsigned long) cu_offset, + (unsigned long) (cu_offset + cu_length - 1)); + } + + printf (_("\nTU table:\n")); + for (i = 0; i < tu_list_elements; i += 3) + { + uint64_t tu_offset = byte_get_little_endian (tu_list + i * 8, 8); + uint64_t type_offset = byte_get_little_endian (tu_list + i * 8 + 8, 8); + uint64_t signature = byte_get_little_endian (tu_list + i * 8 + 16, 8); + + printf (_("[%3u] 0x%lx 0x%lx "), i / 3, + (unsigned long) tu_offset, + (unsigned long) type_offset); + print_dwarf_vma (signature, 8); + printf ("\n"); + } + + printf (_("\nAddress table:\n")); + for (i = 0; i < address_table_size && i <= address_table_size - (2 * 8 + 4); + i += 2 * 8 + 4) + { + uint64_t low = byte_get_little_endian (address_table + i, 8); + uint64_t high = byte_get_little_endian (address_table + i + 8, 8); + uint32_t cu_index = byte_get_little_endian (address_table + i + 16, 4); - if (fc->fde_encoding) - encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + print_dwarf_vma (low, 8); + print_dwarf_vma (high, 8); + printf (_("%lu\n"), (unsigned long) cu_index); + } + + printf (_("\nSymbol table:\n")); + for (i = 0; i < symbol_table_slots; ++i) + { + uint32_t name_offset = byte_get_little_endian (symbol_table + i * 8, 4); + uint32_t cu_vector_offset = byte_get_little_endian (symbol_table + i * 8 + 4, 4); + uint32_t num_cus, cu; - 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 (name_offset != 0 + || cu_vector_offset != 0) + { + unsigned int j; + unsigned char * adr; - if (cie->augmentation[0] == 'z') + adr = constant_pool + name_offset; + /* PR 17531: file: 5b7b07ad. */ + if (adr < constant_pool || adr >= section->start + section->size) { - augmentation_data_len = LEB (); - augmentation_data = start; - start += augmentation_data_len; + printf (_("[%3u] "), i, name_offset); + warn (_("Corrupt name offset of 0x%x found for symbol table slot %d\n"), + name_offset, i); } + else + printf ("[%3u] %.*s:", i, + (int) (section->size - (constant_pool_offset + name_offset)), + constant_pool + name_offset); - 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) + adr = constant_pool + cu_vector_offset; + if (adr < constant_pool || adr >= section->start + section->size - 3) { - unsigned long i; - - printf (" Augmentation data: "); - for (i = 0; i < augmentation_data_len; ++i) - printf (" %02x", augmentation_data[i]); - putchar ('\n'); - putchar ('\n'); + printf (_("\n"), cu_vector_offset); + warn (_("Corrupt CU vector offset of 0x%x found for symbol table slot %d\n"), + cu_vector_offset, i); + continue; } - } - /* 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; + num_cus = byte_get_little_endian (adr, 4); - while (start < block_end) + adr = constant_pool + cu_vector_offset + 4 + num_cus * 4; + if (num_cus * 4 < num_cus + || adr >= section->start + section->size + || adr < constant_pool) { - unsigned op, opa; - unsigned long reg, tmp; + printf ("\n", num_cus); + warn (_("Invalid number of CUs (0x%x) for symbol table slot %d\n"), + num_cus, i); + continue; + } - op = *start++; - opa = op & 0x3f; - if (op & 0xc0) - op &= 0xc0; + if (num_cus > 1) + printf ("\n"); - /* Warning: if you add any more cases to this switch, be - sure to add them to the corresponding switch below. */ - switch (op) - { - case DW_CFA_advance_loc: - break; - case DW_CFA_offset: - LEB (); - frame_need_space (fc, opa); - fc->col_type[opa] = DW_CFA_undefined; - break; - case DW_CFA_restore: - frame_need_space (fc, opa); - fc->col_type[opa] = DW_CFA_undefined; - break; - case DW_CFA_set_loc: - start += encoded_ptr_size; - break; - case DW_CFA_advance_loc1: - start += 1; - break; - case DW_CFA_advance_loc2: - start += 2; - break; - case DW_CFA_advance_loc4: - start += 4; - break; - case DW_CFA_offset_extended: - case DW_CFA_val_offset: - reg = LEB (); LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_restore_extended: - reg = LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_undefined: - reg = LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_same_value: - reg = LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_register: - reg = LEB (); LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_def_cfa: - LEB (); LEB (); - break; - case DW_CFA_def_cfa_register: - LEB (); - break; - case DW_CFA_def_cfa_offset: - LEB (); - break; - case DW_CFA_def_cfa_expression: - tmp = LEB (); - start += tmp; - break; - case DW_CFA_expression: - case DW_CFA_val_expression: - reg = LEB (); - tmp = LEB (); - start += tmp; - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_offset_extended_sf: - case DW_CFA_val_offset_sf: - reg = LEB (); SLEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_def_cfa_sf: - LEB (); SLEB (); - break; - case DW_CFA_def_cfa_offset_sf: - SLEB (); - break; - case DW_CFA_MIPS_advance_loc8: - start += 8; - break; - case DW_CFA_GNU_args_size: - LEB (); - break; - case DW_CFA_GNU_negative_offset_extended: - reg = LEB (); LEB (); - frame_need_space (fc, reg); - fc->col_type[reg] = DW_CFA_undefined; + for (j = 0; j < num_cus; ++j) + { + int is_static; + gdb_index_symbol_kind kind; + + cu = byte_get_little_endian (constant_pool + cu_vector_offset + 4 + j * 4, 4); + is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu); + kind = GDB_INDEX_SYMBOL_KIND_VALUE (cu); + cu = GDB_INDEX_CU_VALUE (cu); + /* Convert to TU number if it's for a type unit. */ + if (cu >= cu_list_elements / 2) + printf ("%cT%lu", num_cus > 1 ? '\t' : ' ', + (unsigned long) (cu - cu_list_elements / 2)); + else + printf ("%c%lu", num_cus > 1 ? '\t' : ' ', (unsigned long) cu); - default: - break; - } + printf (" [%s, %s]", + is_static ? _("static") : _("global"), + get_gdb_index_symbol_kind_name (kind)); + if (num_cus > 1) + printf ("\n"); } - start = tmp; + if (num_cus <= 1) + printf ("\n"); } + } - /* Now we know what registers are used, make a second pass over - the chunk, this time actually printing out the info. */ + return 1; +} - while (start < block_end) - { - unsigned op, opa; - unsigned long ul, reg, roffs; - long l, ofs; - dwarf_vma vma; +/* Pre-allocate enough space for the CU/TU sets needed. */ - op = *start++; - opa = op & 0x3f; - if (op & 0xc0) - op &= 0xc0; +static void +prealloc_cu_tu_list (unsigned int nshndx) +{ + if (shndx_pool == NULL) + { + shndx_pool_size = nshndx; + shndx_pool_used = 0; + shndx_pool = (unsigned int *) xcmalloc (shndx_pool_size, + sizeof (unsigned int)); + } + else + { + shndx_pool_size = shndx_pool_used + nshndx; + shndx_pool = (unsigned int *) xcrealloc (shndx_pool, shndx_pool_size, + sizeof (unsigned int)); + } +} - /* 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; +static void +add_shndx_to_cu_tu_entry (unsigned int shndx) +{ + if (shndx_pool_used >= shndx_pool_size) + { + error (_("Internal error: out of space in the shndx pool.\n")); + return; + } + shndx_pool [shndx_pool_used++] = shndx; +} - case DW_CFA_offset: - roffs = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_offset: %s at cfa%+ld\n", - regname (opa, 0), roffs * fc->data_factor); - fc->col_type[opa] = DW_CFA_offset; - fc->col_offset[opa] = roffs * fc->data_factor; - break; +static void +end_cu_tu_entry (void) +{ + if (shndx_pool_used >= shndx_pool_size) + { + error (_("Internal error: out of space in the shndx pool.\n")); + return; + } + shndx_pool [shndx_pool_used++] = 0; +} - case DW_CFA_restore: - if (! do_debug_frames_interp) - printf (" DW_CFA_restore: %s\n", regname (opa, 0)); - fc->col_type[opa] = cie->col_type[opa]; - fc->col_offset[opa] = cie->col_offset[opa]; - break; +/* Return the short name of a DWARF section given by a DW_SECT enumerator. */ - 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; +static const char * +get_DW_SECT_short_name (unsigned int dw_sect) +{ + static char buf[16]; - 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; + switch (dw_sect) + { + case DW_SECT_INFO: + return "info"; + case DW_SECT_TYPES: + return "types"; + case DW_SECT_ABBREV: + return "abbrev"; + case DW_SECT_LINE: + return "line"; + case DW_SECT_LOC: + return "loc"; + case DW_SECT_STR_OFFSETS: + return "str_off"; + case DW_SECT_MACINFO: + return "macinfo"; + case DW_SECT_MACRO: + return "macro"; + default: + 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; + snprintf (buf, sizeof (buf), "%d", dw_sect); + return buf; +} - 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; +/* Process a CU or TU index. If DO_DISPLAY is true, print the contents. + These sections are extensions for Fission. + See http://gcc.gnu.org/wiki/DebugFissionDWP. */ - case DW_CFA_offset_extended: - reg = LEB (); - roffs = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_offset_extended: %s at cfa%+ld\n", - regname (reg, 0), roffs * fc->data_factor); - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = roffs * fc->data_factor; - break; +static int +process_cu_tu_index (struct dwarf_section *section, int do_display) +{ + unsigned char *phdr = section->start; + unsigned char *limit = phdr + section->size; + unsigned char *phash; + unsigned char *pindex; + unsigned char *ppool; + unsigned int version; + unsigned int ncols = 0; + unsigned int nused; + unsigned int nslots; + unsigned int i; + unsigned int j; + dwarf_vma signature_high; + dwarf_vma signature_low; + char buf[64]; - case DW_CFA_val_offset: - reg = LEB (); - roffs = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_val_offset: %s at cfa%+ld\n", - regname (reg, 0), roffs * fc->data_factor); - fc->col_type[reg] = DW_CFA_val_offset; - fc->col_offset[reg] = roffs * fc->data_factor; - break; + /* PR 17512: file: 002-168123-0.004. */ + if (phdr == NULL) + { + warn (_("Section %s is empty\n"), section->name); + return 0; + } + /* PR 17512: file: 002-376-0.004. */ + if (section->size < 24) + { + warn (_("Section %s is too small to contain a CU/TU header\n"), + section->name); + return 0; + } - case DW_CFA_restore_extended: - reg = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_restore_extended: %s\n", - regname (reg, 0)); - fc->col_type[reg] = cie->col_type[reg]; - fc->col_offset[reg] = cie->col_offset[reg]; - break; + SAFE_BYTE_GET (version, phdr, 4, limit); + if (version >= 2) + SAFE_BYTE_GET (ncols, phdr + 4, 4, limit); + SAFE_BYTE_GET (nused, phdr + 8, 4, limit); + SAFE_BYTE_GET (nslots, phdr + 12, 4, limit); - case DW_CFA_undefined: - reg = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_undefined: %s\n", regname (reg, 0)); - fc->col_type[reg] = DW_CFA_undefined; - fc->col_offset[reg] = 0; - break; + phash = phdr + 16; + pindex = phash + nslots * 8; + ppool = pindex + nslots * 4; - case DW_CFA_same_value: - reg = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_same_value: %s\n", regname (reg, 0)); - fc->col_type[reg] = DW_CFA_same_value; - fc->col_offset[reg] = 0; - break; + /* PR 17531: file: 45d69832. */ + if (pindex < phash || ppool < phdr || (pindex == phash && nslots != 0)) + { + warn (_("Section %s is too small for %d slots\n"), + section->name, nslots); + return 0; + } - case DW_CFA_register: - reg = LEB (); - roffs = LEB (); - if (! do_debug_frames_interp) + if (do_display) + { + printf (_("Contents of the %s section:\n\n"), section->name); + printf (_(" Version: %d\n"), version); + if (version >= 2) + printf (_(" Number of columns: %d\n"), ncols); + printf (_(" Number of used entries: %d\n"), nused); + printf (_(" Number of slots: %d\n\n"), nslots); + } + + if (ppool > limit || ppool < phdr) + { + warn (_("Section %s too small for %d hash table entries\n"), + section->name, nslots); + return 0; + } + + if (version == 1) + { + if (!do_display) + prealloc_cu_tu_list ((limit - ppool) / 4); + for (i = 0; i < nslots; i++) + { + unsigned char *shndx_list; + unsigned int shndx; + + SAFE_BYTE_GET64 (phash, &signature_high, &signature_low, limit); + if (signature_high != 0 || signature_low != 0) + { + SAFE_BYTE_GET (j, pindex, 4, limit); + shndx_list = ppool + j * 4; + /* PR 17531: file: 705e010d. */ + if (shndx_list < ppool) { - printf (" DW_CFA_register: %s in ", - regname (reg, 0)); - puts (regname (roffs, 0)); + warn (_("Section index pool located before start of section\n")); + return 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 = xmalloc (sizeof (Frame_Chunk)); - rs->ncols = fc->ncols; - rs->col_type = xcmalloc (rs->ncols, sizeof (short int)); - rs->col_offset = xcmalloc (rs->ncols, sizeof (int)); - memcpy (rs->col_type, fc->col_type, rs->ncols); - memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int)); - rs->next = remembered_state; - remembered_state = rs; - break; - case DW_CFA_restore_state: - if (! do_debug_frames_interp) - printf (" DW_CFA_restore_state\n"); - rs = remembered_state; - if (rs) + if (do_display) + printf (_(" [%3d] Signature: 0x%s Sections: "), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + for (;;) { - 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); + if (shndx_list >= limit) + { + warn (_("Section %s too small for shndx pool\n"), + section->name); + return 0; + } + SAFE_BYTE_GET (shndx, shndx_list, 4, limit); + if (shndx == 0) + break; + if (do_display) + printf (" %d", shndx); + else + add_shndx_to_cu_tu_entry (shndx); + shndx_list += 4; } - else if (do_debug_frames_interp) - printf ("Mismatched DW_CFA_restore_state\n"); - break; + if (do_display) + printf ("\n"); + else + end_cu_tu_entry (); + } + phash += 8; + pindex += 4; + } + } + else if (version == 2) + { + unsigned int val; + unsigned int dw_sect; + unsigned char *ph = phash; + unsigned char *pi = pindex; + unsigned char *poffsets = ppool + ncols * 4; + unsigned char *psizes = poffsets + nused * ncols * 4; + unsigned char *pend = psizes + nused * ncols * 4; + bfd_boolean is_tu_index; + struct cu_tu_set *this_set = NULL; + unsigned int row; + unsigned char *prow; + + is_tu_index = strcmp (section->name, ".debug_tu_index") == 0; + + /* PR 17531: file: 0dd159bf. + Check for wraparound with an overlarge ncols value. */ + if (poffsets < ppool || (unsigned int) ((poffsets - ppool) / 4) != ncols) + { + warn (_("Overlarge number of columns: %x\n"), ncols); + return 0; + } - 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; + if (pend > limit) + { + warn (_("Section %s too small for offset and size tables\n"), + section->name); + return 0; + } - 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; + if (do_display) + { + printf (_(" Offset table\n")); + printf (" slot %-16s ", + is_tu_index ? _("signature") : _("dwo_id")); + } + else + { + if (is_tu_index) + { + tu_count = nused; + tu_sets = xcalloc2 (nused, sizeof (struct cu_tu_set)); + this_set = tu_sets; + } + else + { + cu_count = nused; + cu_sets = xcalloc2 (nused, sizeof (struct cu_tu_set)); + this_set = cu_sets; + } + } - 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; + if (do_display) + { + for (j = 0; j < ncols; j++) + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + printf (" %8s", get_DW_SECT_short_name (dw_sect)); + } + printf ("\n"); + } - case DW_CFA_nop: - if (! do_debug_frames_interp) - printf (" DW_CFA_nop\n"); - break; + for (i = 0; i < nslots; i++) + { + SAFE_BYTE_GET64 (ph, &signature_high, &signature_low, limit); - case DW_CFA_def_cfa_expression: - ul = LEB (); - if (! do_debug_frames_interp) + SAFE_BYTE_GET (row, pi, 4, limit); + if (row != 0) + { + /* PR 17531: file: a05f6ab3. */ + if (row > nused) { - printf (" DW_CFA_def_cfa_expression ("); - decode_location_expression (start, eh_addr_size, ul, 0); - printf (")\n"); + warn (_("Row index (%u) is larger than number of used entries (%u)\n"), + row, nused); + return 0; } - fc->cfa_exp = 1; - start += ul; - break; - case DW_CFA_expression: - reg = LEB (); - ul = LEB (); - if (! do_debug_frames_interp) + if (!do_display) + memcpy (&this_set[row - 1].signature, ph, sizeof (uint64_t)); + + prow = poffsets + (row - 1) * ncols * 4; + /* PR 17531: file: b8ce60a8. */ + if (prow < poffsets || prow > limit) { - printf (" DW_CFA_expression: %s (", - regname (reg, 0)); - decode_location_expression (start, eh_addr_size, - ul, 0); - printf (")\n"); + warn (_("Row index (%u) * num columns (%u) > space remaining in section\n"), + row, ncols); + return 0; } - fc->col_type[reg] = DW_CFA_expression; - start += ul; - break; - - case DW_CFA_val_expression: - reg = LEB (); - ul = LEB (); - if (! do_debug_frames_interp) + + if (do_display) + printf (_(" [%3d] 0x%s"), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + for (j = 0; j < ncols; j++) { - printf (" DW_CFA_val_expression: %s (", - regname (reg, 0)); - decode_location_expression (start, eh_addr_size, ul, 0); - printf (")\n"); + SAFE_BYTE_GET (val, prow + j * 4, 4, limit); + if (do_display) + printf (" %8d", val); + else + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + + /* PR 17531: file: 10796eb3. */ + if (dw_sect >= DW_SECT_MAX) + warn (_("Overlarge Dwarf section index detected: %u\n"), dw_sect); + else + this_set [row - 1].section_offsets [dw_sect] = val; + } } - fc->col_type[reg] = DW_CFA_val_expression; - start += ul; - break; - case DW_CFA_offset_extended_sf: - reg = LEB (); - l = SLEB (); - frame_need_space (fc, reg); - if (! do_debug_frames_interp) - printf (" DW_CFA_offset_extended_sf: %s at cfa%+ld\n", - regname (reg, 0), l * fc->data_factor); - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = l * fc->data_factor; - break; + if (do_display) + printf ("\n"); + } + ph += 8; + pi += 4; + } - case DW_CFA_val_offset_sf: - reg = LEB (); - l = SLEB (); - frame_need_space (fc, reg); - if (! do_debug_frames_interp) - printf (" DW_CFA_val_offset_sf: %s at cfa%+ld\n", - regname (reg, 0), l * fc->data_factor); - fc->col_type[reg] = DW_CFA_val_offset; - fc->col_offset[reg] = l * fc->data_factor; - break; + ph = phash; + pi = pindex; + if (do_display) + { + printf ("\n"); + printf (_(" Size table\n")); + printf (" slot %-16s ", + is_tu_index ? _("signature") : _("dwo_id")); + } - 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; + for (j = 0; j < ncols; j++) + { + SAFE_BYTE_GET (val, ppool + j * 4, 4, limit); + if (do_display) + printf (" %8s", get_DW_SECT_short_name (val)); + } - 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; + if (do_display) + printf ("\n"); - 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; + for (i = 0; i < nslots; i++) + { + SAFE_BYTE_GET64 (ph, &signature_high, &signature_low, limit); - case DW_CFA_GNU_window_save: - if (! do_debug_frames_interp) - printf (" DW_CFA_GNU_window_save\n"); - break; + SAFE_BYTE_GET (row, pi, 4, limit); + if (row != 0) + { + prow = psizes + (row - 1) * ncols * 4; - case DW_CFA_GNU_args_size: - ul = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_GNU_args_size: %ld\n", ul); - break; + if (do_display) + printf (_(" [%3d] 0x%s"), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); - case DW_CFA_GNU_negative_offset_extended: - reg = LEB (); - l = - LEB (); - frame_need_space (fc, reg); - if (! do_debug_frames_interp) - printf (" DW_CFA_GNU_negative_offset_extended: %s at cfa%+ld\n", - regname (reg, 0), l * fc->data_factor); - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = l * fc->data_factor; - break; + for (j = 0; j < ncols; j++) + { + SAFE_BYTE_GET (val, prow + j * 4, 4, limit); + if (do_display) + printf (" %8d", val); + else + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + if (dw_sect >= DW_SECT_MAX) + warn (_("Overlarge Dwarf section index detected: %u\n"), dw_sect); + else + this_set [row - 1].section_sizes [dw_sect] = val; + } + } - 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_display) + printf ("\n"); } - } - - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - start = block_end; + ph += 8; + pi += 4; + } } + else if (do_display) + printf (_(" Unsupported version (%d)\n"), version); - printf ("\n"); + if (do_display) + printf ("\n"); return 1; } -#undef GET -#undef LEB -#undef SLEB +/* Load the CU and TU indexes if present. This will build a list of + section sets that we can use to associate a .debug_info.dwo section + with its associated .debug_abbrev.dwo section in a .dwp file. */ + +static void +load_cu_tu_indexes (void *file) +{ + /* If we have already loaded (or tried to load) the CU and TU indexes + then do not bother to repeat the task. */ + if (cu_tu_indexes_read) + return; + + if (load_debug_section (dwp_cu_index, file)) + process_cu_tu_index (&debug_displays [dwp_cu_index].section, 0); + + if (load_debug_section (dwp_tu_index, file)) + process_cu_tu_index (&debug_displays [dwp_tu_index].section, 0); + + cu_tu_indexes_read = 1; +} + +/* Find the set of sections that includes section SHNDX. */ + +unsigned int * +find_cu_tu_set (void *file, unsigned int shndx) +{ + unsigned int i; + + load_cu_tu_indexes (file); + + /* Find SHNDX in the shndx pool. */ + for (i = 0; i < shndx_pool_used; i++) + if (shndx_pool [i] == shndx) + break; + + if (i >= shndx_pool_used) + return NULL; + + /* Now backup to find the first entry in the set. */ + while (i > 0 && shndx_pool [i - 1] != 0) + i--; + + return shndx_pool + i; +} + +/* Display a .debug_cu_index or .debug_tu_index section. */ + +static int +display_cu_index (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) +{ + return process_cu_tu_index (section, 1); +} static int display_debug_not_supported (struct dwarf_section *section, @@ -4095,67 +7312,80 @@ display_debug_not_supported (struct dwarf_section *section, return 1; } +/* Like malloc, but takes two parameters like calloc. + Verifies that the first parameter is not too large. + Note: does *not* initialise the allocated memory to zero. */ void * cmalloc (size_t nmemb, size_t size) { /* Check for overflow. */ if (nmemb >= ~(size_t) 0 / size) return NULL; - else - return malloc (nmemb * size); + + return xmalloc (nmemb * size); } +/* Like xmalloc, but takes two parameters like calloc. + Verifies that the first parameter is not too large. + Note: does *not* initialise the allocated memory to zero. */ void * xcmalloc (size_t nmemb, size_t size) { /* Check for overflow. */ if (nmemb >= ~(size_t) 0 / size) - return NULL; - else - return xmalloc (nmemb * size); + { + fprintf (stderr, + _("Attempt to allocate an array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } + + return xmalloc (nmemb * size); } +/* Like xrealloc, but takes three parameters. + Verifies that the second parameter is not too large. + Note: does *not* initialise any new memory to zero. */ 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; + { + fprintf (stderr, + _("Attempt to re-allocate an array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } - va_start (args, message); - fprintf (stderr, _("%s: Error: "), program_name); - vfprintf (stderr, message, args); - va_end (args); + return xrealloc (ptr, nmemb * size); } -void -warn (const char *message, ...) +/* Like xcalloc, but verifies that the first parameter is not too large. */ +void * +xcalloc2 (size_t nmemb, size_t size) { - va_list args; + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + { + fprintf (stderr, + _("Attempt to allocate a zero'ed array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } - va_start (args, message); - fprintf (stderr, _("%s: Warning: "), program_name); - vfprintf (stderr, message, args); - va_end (args); + return xcalloc (nmemb, size); } void free_debug_memory (void) { - enum dwarf_section_display_enum i; + unsigned int i; free_abbrevs (); for (i = 0; i < max; i++) - free_debug_section (i); + free_debug_section ((enum dwarf_section_display_enum) i); if (debug_information != NULL) { @@ -4172,45 +7402,251 @@ free_debug_memory (void) free (debug_information [i].range_lists); } } - free (debug_information); debug_information = NULL; - num_debug_info_entries = 0; + alloc_num_debug_info_entries = 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 }, + { "addr", & do_debug_addr, 1 }, + { "aranges", & do_debug_aranges, 1 }, + { "cu_index", & do_debug_cu_index, 1 }, + { "decodedline", & do_debug_lines, FLAG_DEBUG_LINES_DECODED }, + { "frames", & do_debug_frames, 1 }, + { "frames-interp", & do_debug_frames_interp, 1 }, + /* The special .gdb_index section. */ + { "gdb_index", & do_gdb_index, 1 }, + { "info", & do_debug_info, 1 }, + { "line", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, /* For backwards compatibility. */ + { "loc", & do_debug_loc, 1 }, + { "macro", & do_debug_macinfo, 1 }, + { "pubnames", & do_debug_pubnames, 1 }, + { "pubtypes", & do_debug_pubtypes, 1 }, + /* This entry is for compatability + with earlier versions of readelf. */ + { "ranges", & do_debug_aranges, 1 }, + { "rawline", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, + { "str", & do_debug_str, 1 }, + /* These trace_* sections are used by Itanium VMS. */ + { "trace_abbrev", & do_trace_abbrevs, 1 }, + { "trace_aranges", & do_trace_aranges, 1 }, + { "trace_info", & do_trace_info, 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 lindex = 0; + + while (letters[lindex]) + switch (letters[lindex++]) + { + 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 't': + do_debug_pubtypes = 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"), letters); + 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_pubtypes = 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; + do_gdb_index = 1; + do_trace_info = 1; + do_trace_abbrevs = 1; + do_trace_aranges = 1; + do_debug_addr = 1; + do_debug_cu_index = 1; +} + struct dwarf_section_display debug_displays[] = { - { { ".debug_abbrev", NULL, 0, 0 }, - display_debug_abbrev, 0, 0 }, - { { ".debug_aranges", NULL, 0, 0 }, - display_debug_aranges, 0, 0 }, - { { ".debug_frame", NULL, 0, 0 }, - display_debug_frames, 1, 0 }, - { { ".debug_info", NULL, 0, 0 }, - display_debug_info, 1, 0 }, - { { ".debug_line", NULL, 0, 0 }, - display_debug_lines, 0, 0 }, - { { ".debug_pubnames", NULL, 0, 0 }, - display_debug_pubnames, 0, 0 }, - { { ".eh_frame", NULL, 0, 0 }, - display_debug_frames, 1, 1 }, - { { ".debug_macinfo", NULL, 0, 0 }, - display_debug_macinfo, 0, 0 }, - { { ".debug_str", NULL, 0, 0 }, - display_debug_str, 0, 0 }, - { { ".debug_loc", NULL, 0, 0 }, - display_debug_loc, 0, 0 }, - { { ".debug_pubtypes", NULL, 0, 0 }, - display_debug_pubnames, 0, 0 }, - { { ".debug_ranges", NULL, 0, 0 }, - display_debug_ranges, 0, 0 }, - { { ".debug_static_func", NULL, 0, 0 }, - display_debug_not_supported, 0, 0 }, - { { ".debug_static_vars", NULL, 0, 0 }, - display_debug_not_supported, 0, 0 }, - { { ".debug_types", NULL, 0, 0 }, - display_debug_not_supported, 0, 0 }, - { { ".debug_weaknames", NULL, 0, 0 }, - display_debug_not_supported, 0, 0 } + { { ".debug_abbrev", ".zdebug_abbrev", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_abbrev, &do_debug_abbrevs, FALSE }, + { { ".debug_aranges", ".zdebug_aranges", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_aranges, &do_debug_aranges, TRUE }, + { { ".debug_frame", ".zdebug_frame", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_frames, &do_debug_frames, TRUE }, + { { ".debug_info", ".zdebug_info", NULL, NULL, 0, 0, abbrev, NULL, 0, NULL }, + display_debug_info, &do_debug_info, TRUE }, + { { ".debug_line", ".zdebug_line", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_lines, &do_debug_lines, TRUE }, + { { ".debug_pubnames", ".zdebug_pubnames", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_pubnames, &do_debug_pubnames, FALSE }, + { { ".debug_gnu_pubnames", ".zdebug_gnu_pubnames", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_gnu_pubnames, &do_debug_pubnames, FALSE }, + { { ".eh_frame", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_frames, &do_debug_frames, TRUE }, + { { ".debug_macinfo", ".zdebug_macinfo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_macinfo, &do_debug_macinfo, FALSE }, + { { ".debug_macro", ".zdebug_macro", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_macro, &do_debug_macinfo, TRUE }, + { { ".debug_str", ".zdebug_str", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_str, &do_debug_str, FALSE }, + { { ".debug_loc", ".zdebug_loc", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_loc, &do_debug_loc, TRUE }, + { { ".debug_pubtypes", ".zdebug_pubtypes", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_pubnames, &do_debug_pubtypes, FALSE }, + { { ".debug_gnu_pubtypes", ".zdebug_gnu_pubtypes", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_gnu_pubnames, &do_debug_pubtypes, FALSE }, + { { ".debug_ranges", ".zdebug_ranges", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_ranges, &do_debug_ranges, TRUE }, + { { ".debug_static_func", ".zdebug_static_func", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_not_supported, NULL, FALSE }, + { { ".debug_static_vars", ".zdebug_static_vars", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_not_supported, NULL, FALSE }, + { { ".debug_types", ".zdebug_types", NULL, NULL, 0, 0, abbrev, NULL, 0, NULL }, + display_debug_types, &do_debug_info, TRUE }, + { { ".debug_weaknames", ".zdebug_weaknames", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_not_supported, NULL, FALSE }, + { { ".gdb_index", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_gdb_index, &do_gdb_index, FALSE }, + { { ".trace_info", "", NULL, NULL, 0, 0, trace_abbrev, NULL, 0, NULL }, + display_trace_info, &do_trace_info, TRUE }, + { { ".trace_abbrev", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_abbrev, &do_trace_abbrevs, FALSE }, + { { ".trace_aranges", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_aranges, &do_trace_aranges, FALSE }, + { { ".debug_info.dwo", ".zdebug_info.dwo", NULL, NULL, 0, 0, abbrev_dwo, NULL, 0, NULL }, + display_debug_info, &do_debug_info, TRUE }, + { { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_abbrev, &do_debug_abbrevs, FALSE }, + { { ".debug_types.dwo", ".zdebug_types.dwo", NULL, NULL, 0, 0, abbrev_dwo, NULL, 0, NULL }, + display_debug_types, &do_debug_info, TRUE }, + { { ".debug_line.dwo", ".zdebug_line.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_lines, &do_debug_lines, TRUE }, + { { ".debug_loc.dwo", ".zdebug_loc.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_loc, &do_debug_loc, TRUE }, + { { ".debug_macro.dwo", ".zdebug_macro.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_macro, &do_debug_macinfo, TRUE }, + { { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_macinfo, &do_debug_macinfo, FALSE }, + { { ".debug_str.dwo", ".zdebug_str.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_str, &do_debug_str, TRUE }, + { { ".debug_str_offsets", ".zdebug_str_offsets", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_str_offsets, NULL, FALSE }, + { { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_str_offsets, NULL, FALSE }, + { { ".debug_addr", ".zdebug_addr", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_debug_addr, &do_debug_addr, TRUE }, + { { ".debug_cu_index", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_cu_index, &do_debug_cu_index, FALSE }, + { { ".debug_tu_index", "", NULL, NULL, 0, 0, 0, NULL, 0, NULL }, + display_cu_index, &do_debug_cu_index, FALSE }, };