From 6bd1a22c3eecb1892841a530544d8cdf43af5263 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 9 Oct 2007 13:32:50 +0000 Subject: [PATCH] binutils/ 2007-10-09 H.J. Lu PR binutils/4476 * readelf.c (print_dynamic_symbol): New. (process_symbol_table): Handle DT_GNU_HASH for dynamic symbols. ld/testsuite/ 2007-10-09 H.J. Lu PR binutils/4476 * ld-elf/hash.d: Check "-s -D" for readelf. --- binutils/ChangeLog | 6 + binutils/readelf.c | 310 +++++++++++++++++++++---------------- ld/testsuite/ChangeLog | 5 + ld/testsuite/ld-elf/hash.d | 10 +- 4 files changed, 196 insertions(+), 135 deletions(-) diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 7a4c816532c..0c5f72314f0 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,9 @@ +2007-10-09 H.J. Lu + + PR binutils/4476 + * readelf.c (print_dynamic_symbol): New. + (process_symbol_table): Handle DT_GNU_HASH for dynamic symbols. + 2007-10-08 Carlos O'Donell * resrc.c (read_rc_file): Rename e to edit, and c to dir. diff --git a/binutils/readelf.c b/binutils/readelf.c index 191042eaa9d..e550f6fba7f 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -7084,6 +7084,39 @@ get_dynamic_data (FILE *file, unsigned int number, unsigned int ent_size) return i_data; } +static void +print_dynamic_symbol (bfd_vma si, unsigned long hn) +{ + Elf_Internal_Sym *psym; + int n; + + psym = dynamic_symbols + si; + + n = print_vma (si, DEC_5); + if (n < 5) + fputs (" " + n, stdout); + printf (" %3lu: ", hn); + print_vma (psym->st_value, LONG_HEX); + putchar (' '); + print_vma (psym->st_size, DEC_5); + + printf (" %6s", get_symbol_type (ELF_ST_TYPE (psym->st_info))); + printf (" %6s", get_symbol_binding (ELF_ST_BIND (psym->st_info))); + printf (" %3s", get_symbol_visibility (ELF_ST_VISIBILITY (psym->st_other))); + /* Check to see if any other bits in the st_other field are set. + Note - displaying this information disrupts the layout of the + table being generated, but for the moment this case is very + rare. */ + if (psym->st_other ^ ELF_ST_VISIBILITY (psym->st_other)) + printf (" [%s] ", get_symbol_other (psym->st_other ^ ELF_ST_VISIBILITY (psym->st_other))); + printf (" %3.3s ", get_symbol_index_type (psym->st_shndx)); + if (VALID_DYNAMIC_NAME (psym->st_name)) + print_symbol (25, GET_DYNAMIC_NAME (psym->st_name)); + else + printf (" ", psym->st_name); + putchar ('\n'); +} + /* Dump the symbol table. */ static int process_symbol_table (FILE *file) @@ -7096,12 +7129,14 @@ process_symbol_table (FILE *file) bfd_vma ngnubuckets = 0; bfd_vma *gnubuckets = NULL; bfd_vma *gnuchains = NULL; + bfd_vma gnusymidx = 0; if (! do_syms && !do_histogram) return 1; - if (dynamic_info[DT_HASH] && ((do_using_dynamic && dynamic_strings != NULL) - || do_histogram)) + if (dynamic_info[DT_HASH] + && (do_histogram + || (do_using_dynamic && dynamic_strings != NULL))) { unsigned char nb[8]; unsigned char nc[8]; @@ -7145,54 +7180,157 @@ process_symbol_table (FILE *file) return 0; } - if (do_syms - && dynamic_info[DT_HASH] && do_using_dynamic && dynamic_strings != NULL) + if (dynamic_info_DT_GNU_HASH + && (do_histogram + || (do_using_dynamic && dynamic_strings != NULL))) { - unsigned long hn; - bfd_vma si; + unsigned char nb[16]; + bfd_vma i, maxchain = 0xffffffff, bitmaskwords; + bfd_vma buckets_vma; + + if (fseek (file, + (archive_file_offset + + offset_from_vma (file, dynamic_info_DT_GNU_HASH, + sizeof nb)), + SEEK_SET)) + { + error (_("Unable to seek to start of dynamic information\n")); + return 0; + } - printf (_("\nSymbol table for image:\n")); + if (fread (nb, 16, 1, file) != 1) + { + error (_("Failed to read in number of buckets\n")); + return 0; + } + + ngnubuckets = byte_get (nb, 4); + gnusymidx = byte_get (nb + 4, 4); + bitmaskwords = byte_get (nb + 8, 4); + buckets_vma = dynamic_info_DT_GNU_HASH + 16; if (is_32bit_elf) - printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + buckets_vma += bitmaskwords * 4; else - printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + buckets_vma += bitmaskwords * 8; - for (hn = 0; hn < nbuckets; hn++) + if (fseek (file, + (archive_file_offset + + offset_from_vma (file, buckets_vma, 4)), + SEEK_SET)) { - if (! buckets[hn]) - continue; + error (_("Unable to seek to start of dynamic information\n")); + return 0; + } + + gnubuckets = get_dynamic_data (file, ngnubuckets, 4); - for (si = buckets[hn]; si < nchains && si > 0; si = chains[si]) + if (gnubuckets == NULL) + return 0; + + for (i = 0; i < ngnubuckets; i++) + if (gnubuckets[i] != 0) + { + if (gnubuckets[i] < gnusymidx) + return 0; + + if (maxchain == 0xffffffff || gnubuckets[i] > maxchain) + maxchain = gnubuckets[i]; + } + + if (maxchain == 0xffffffff) + return 0; + + maxchain -= gnusymidx; + + if (fseek (file, + (archive_file_offset + + offset_from_vma (file, buckets_vma + + 4 * (ngnubuckets + maxchain), 4)), + SEEK_SET)) + { + error (_("Unable to seek to start of dynamic information\n")); + return 0; + } + + do + { + if (fread (nb, 4, 1, file) != 1) { - Elf_Internal_Sym *psym; - int n; + error (_("Failed to determine last chain length\n")); + return 0; + } - psym = dynamic_symbols + si; + if (maxchain + 1 == 0) + return 0; - n = print_vma (si, DEC_5); - if (n < 5) - fputs (" " + n, stdout); - printf (" %3lu: ", hn); - print_vma (psym->st_value, LONG_HEX); - putchar (' '); - print_vma (psym->st_size, DEC_5); + ++maxchain; + } + while ((byte_get (nb, 4) & 1) == 0); - printf (" %6s", get_symbol_type (ELF_ST_TYPE (psym->st_info))); - printf (" %6s", get_symbol_binding (ELF_ST_BIND (psym->st_info))); - printf (" %3s", get_symbol_visibility (ELF_ST_VISIBILITY (psym->st_other))); - /* Check to see if any other bits in the st_other field are set. - Note - displaying this information disrupts the layout of the - table being generated, but for the moment this case is very rare. */ - if (psym->st_other ^ ELF_ST_VISIBILITY (psym->st_other)) - printf (" [%s] ", get_symbol_other (psym->st_other ^ ELF_ST_VISIBILITY (psym->st_other))); - printf (" %3.3s ", get_symbol_index_type (psym->st_shndx)); - if (VALID_DYNAMIC_NAME (psym->st_name)) - print_symbol (25, GET_DYNAMIC_NAME (psym->st_name)); - else - printf (" ", psym->st_name); - putchar ('\n'); + if (fseek (file, + (archive_file_offset + + offset_from_vma (file, buckets_vma + 4 * ngnubuckets, 4)), + SEEK_SET)) + { + error (_("Unable to seek to start of dynamic information\n")); + return 0; + } + + gnuchains = get_dynamic_data (file, maxchain, 4); + + if (gnuchains == NULL) + return 0; + } + + if ((dynamic_info[DT_HASH] || dynamic_info_DT_GNU_HASH) + && do_syms + && do_using_dynamic + && dynamic_strings != NULL) + { + unsigned long hn; + + if (dynamic_info[DT_HASH]) + { + bfd_vma si; + + printf (_("\nSymbol table for image:\n")); + if (is_32bit_elf) + printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + else + printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + + for (hn = 0; hn < nbuckets; hn++) + { + if (! buckets[hn]) + continue; + + for (si = buckets[hn]; si < nchains && si > 0; si = chains[si]) + print_dynamic_symbol (si, hn); } } + + if (dynamic_info_DT_GNU_HASH) + { + printf (_("\nSymbol table of `.gnu.hash' for image:\n")); + if (is_32bit_elf) + printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + else + printf (_(" Num Buc: Value Size Type Bind Vis Ndx Name\n")); + + for (hn = 0; hn < ngnubuckets; ++hn) + if (gnubuckets[hn] != 0) + { + bfd_vma si = gnubuckets[hn]; + bfd_vma off = si - gnusymidx; + + do + { + print_dynamic_symbol (si, hn); + si++; + } + while ((gnuchains[off++] & 1) == 0); + } + } } else if (do_syms && !do_using_dynamic) { @@ -7477,108 +7615,12 @@ process_symbol_table (FILE *file) if (do_histogram && dynamic_info_DT_GNU_HASH) { - unsigned char nb[16]; - bfd_vma i, maxchain = 0xffffffff, symidx, bitmaskwords; unsigned long *lengths; unsigned long *counts; unsigned long hn; unsigned long maxlength = 0; unsigned long nzero_counts = 0; unsigned long nsyms = 0; - bfd_vma buckets_vma; - - if (fseek (file, - (archive_file_offset - + offset_from_vma (file, dynamic_info_DT_GNU_HASH, - sizeof nb)), - SEEK_SET)) - { - error (_("Unable to seek to start of dynamic information\n")); - return 0; - } - - if (fread (nb, 16, 1, file) != 1) - { - error (_("Failed to read in number of buckets\n")); - return 0; - } - - ngnubuckets = byte_get (nb, 4); - symidx = byte_get (nb + 4, 4); - bitmaskwords = byte_get (nb + 8, 4); - buckets_vma = dynamic_info_DT_GNU_HASH + 16; - if (is_32bit_elf) - buckets_vma += bitmaskwords * 4; - else - buckets_vma += bitmaskwords * 8; - - if (fseek (file, - (archive_file_offset - + offset_from_vma (file, buckets_vma, 4)), - SEEK_SET)) - { - error (_("Unable to seek to start of dynamic information\n")); - return 0; - } - - gnubuckets = get_dynamic_data (file, ngnubuckets, 4); - - if (gnubuckets == NULL) - return 0; - - for (i = 0; i < ngnubuckets; i++) - if (gnubuckets[i] != 0) - { - if (gnubuckets[i] < symidx) - return 0; - - if (maxchain == 0xffffffff || gnubuckets[i] > maxchain) - maxchain = gnubuckets[i]; - } - - if (maxchain == 0xffffffff) - return 0; - - maxchain -= symidx; - - if (fseek (file, - (archive_file_offset - + offset_from_vma (file, buckets_vma - + 4 * (ngnubuckets + maxchain), 4)), - SEEK_SET)) - { - error (_("Unable to seek to start of dynamic information\n")); - return 0; - } - - do - { - if (fread (nb, 4, 1, file) != 1) - { - error (_("Failed to determine last chain length\n")); - return 0; - } - - if (maxchain + 1 == 0) - return 0; - - ++maxchain; - } - while ((byte_get (nb, 4) & 1) == 0); - - if (fseek (file, - (archive_file_offset - + offset_from_vma (file, buckets_vma + 4 * ngnubuckets, 4)), - SEEK_SET)) - { - error (_("Unable to seek to start of dynamic information\n")); - return 0; - } - - gnuchains = get_dynamic_data (file, maxchain, 4); - - if (gnuchains == NULL) - return 0; lengths = calloc (ngnubuckets, sizeof (*lengths)); if (lengths == NULL) @@ -7596,7 +7638,7 @@ process_symbol_table (FILE *file) { bfd_vma off, length = 1; - for (off = gnubuckets[hn] - symidx; + for (off = gnubuckets[hn] - gnusymidx; (gnuchains[off] & 1) == 0; ++off) ++length; lengths[hn] = length; diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index a555727ea82..8c3f7361842 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2007-10-09 H.J. Lu + + PR binutils/4476 + * ld-elf/hash.d: Check "-s -D" for readelf. + 2007-10-02 Ralf Habecker PR linker/4844 diff --git a/ld/testsuite/ld-elf/hash.d b/ld/testsuite/ld-elf/hash.d index 9c5a8f92096..b3769aaaba1 100644 --- a/ld/testsuite/ld-elf/hash.d +++ b/ld/testsuite/ld-elf/hash.d @@ -1,5 +1,5 @@ #source: start.s -#readelf: -d +#readelf: -d -s -D #ld: -shared --hash-style=gnu #target: *-*-linux* #notarget: mips*-*-* @@ -7,3 +7,11 @@ #... [ ]*0x[0-9a-z]+[ ]+\(GNU_HASH\)[ ]+0x[0-9a-z]+ #... +[ ]+[0-9]+[ ]+[0-9]+:[ ]+[0-9a-f]+[ ]+[0-9]+[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+[1-9] _start +#... +[ ]+[0-9]+[ ]+[0-9]+:[ ]+[0-9a-f]+[ ]+[0-9]+[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+[1-9] main +#... +[ ]+[0-9]+[ ]+[0-9]+:[ ]+[0-9a-f]+[ ]+[0-9]+[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+[1-9] start +#... +[ ]+[0-9]+[ ]+[0-9]+:[ ]+[0-9a-f]+[ ]+[0-9]+[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+[1-9] __start +#... -- 2.30.2