X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=binutils%2Fnm.c;h=e46fffc796f772141e9ad8ea4515be2dc36d49cd;hb=9108bc33b1ca0b2e930c0cce5b1a0394e33e86be;hp=15c48a3c5ff63e12bd04379568684dfcb6814b85;hpb=4b95cf5c0c75d6efc1b2f96af72317aecca079f1;p=deliverable%2Fbinutils-gdb.git diff --git a/binutils/nm.c b/binutils/nm.c index 15c48a3c5f..e46fffc796 100644 --- a/binutils/nm.c +++ b/binutils/nm.c @@ -1,5 +1,5 @@ /* nm.c -- Describe symbol table of a rel file. - Copyright (C) 1991-2014 Free Software Foundation, Inc. + Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of GNU Binutils. @@ -28,7 +28,15 @@ #include "libiberty.h" #include "elf-bfd.h" #include "elf/common.h" +#define DO_NOT_DEFINE_AOUTHDR +#define DO_NOT_DEFINE_FILHDR +#define DO_NOT_DEFINE_LINENO +#define DO_NOT_DEFINE_SCNHDR +#include "coff/external.h" +#include "coff/internal.h" +#include "libcoff.h" #include "bucomm.h" +#include "plugin-api.h" #include "plugin.h" /* When sorting by size, we use this structure to hold the size and a @@ -56,6 +64,7 @@ struct extended_symbol_info symbol_info *sinfo; bfd_vma ssize; elf_symbol_type *elfinfo; + coff_symbol_type *coffinfo; /* FIXME: We should add more fields for Type, Line, Section. */ }; #define SYM_NAME(sym) (sym->sinfo->name) @@ -148,10 +157,10 @@ static int sort_by_size = 0; /* Sort by size of symbol. */ static int undefined_only = 0; /* Print undefined symbols only. */ static int dynamic = 0; /* Print dynamic symbols. */ static int show_version = 0; /* Show the version number. */ -static int show_stats = 0; /* Show statistics. */ static int show_synthetic = 0; /* Display synthesized symbols too. */ static int line_numbers = 0; /* Print line numbers for symbols. */ static int allow_special_symbols = 0; /* Allow special symbols. */ +static int with_symbol_versions = 0; /* Include symbol version information in the output. */ /* When to print the names of files. Not mutually exclusive in SYSV format. */ static int filename_per_file = 0; /* Once per file, on its own line. */ @@ -175,7 +184,11 @@ static char other_format[] = "%02x"; static char desc_format[] = "%04x"; static char *target = NULL; -static char *plugin_target = NULL; +#if BFD_SUPPORTS_PLUGINS +static const char *plugin_target = "plugin"; +#else +static const char *plugin_target = NULL; +#endif /* Used to cache the line numbers for a BFD. */ static bfd *lineno_cache_bfd; @@ -207,18 +220,18 @@ static struct option long_options[] = {"reverse-sort", no_argument, &reverse_sort, 1}, {"size-sort", no_argument, 0, OPTION_SIZE_SORT}, {"special-syms", no_argument, &allow_special_symbols, 1}, - {"stats", no_argument, &show_stats, 1}, {"synthetic", no_argument, &show_synthetic, 1}, {"target", required_argument, 0, OPTION_TARGET}, {"defined-only", no_argument, &defined_only, 1}, {"undefined-only", no_argument, &undefined_only, 1}, {"version", no_argument, &show_version, 1}, + {"with-symbol-versions", no_argument, &with_symbol_versions, 1}, {0, no_argument, 0, 0} }; /* Some error-reporting functions. */ -static void +ATTRIBUTE_NORETURN static void usage (FILE *stream, int status) { fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name); @@ -258,6 +271,7 @@ usage (FILE *stream, int status) -t, --radix=RADIX Use RADIX for printing symbol values\n\ --target=BFDNAME Specify the target object format as BFDNAME\n\ -u, --undefined-only Display only undefined symbols\n\ + --with-symbol-versions Display version strings after symbol names\n\ -X 32_64 (ignored)\n\ @FILE Read options from FILE\n\ -h, --help Display this information\n\ @@ -327,9 +341,10 @@ set_output_format (char *f) } static const char * -get_symbol_type (unsigned int type) +get_elf_symbol_type (unsigned int type) { - static char buff [32]; + static char *bufp; + int n; switch (type) { @@ -340,15 +355,48 @@ get_symbol_type (unsigned int type) case STT_FILE: return "FILE"; case STT_COMMON: return "COMMON"; case STT_TLS: return "TLS"; - default: - if (type >= STT_LOPROC && type <= STT_HIPROC) - sprintf (buff, _(": %d"), type); - else if (type >= STT_LOOS && type <= STT_HIOS) - sprintf (buff, _(": %d"), type); - else - sprintf (buff, _(": %d"), type); - return buff; } + + free (bufp); + if (type >= STT_LOPROC && type <= STT_HIPROC) + n = asprintf (&bufp, _(": %d"), type); + else if (type >= STT_LOOS && type <= STT_HIOS) + n = asprintf (&bufp, _(": %d"), type); + else + n = asprintf (&bufp, _(": %d"), type); + if (n < 0) + fatal ("%s", xstrerror (errno)); + return bufp; +} + +static const char * +get_coff_symbol_type (const struct internal_syment *sym) +{ + static char *bufp; + int n; + + switch (sym->n_sclass) + { + case C_BLOCK: return "Block"; + case C_FILE: return "File"; + case C_LINE: return "Line"; + } + + if (!sym->n_type) + return "None"; + + switch (DTYPE(sym->n_type)) + { + case DT_FCN: return "Function"; + case DT_PTR: return "Pointer"; + case DT_ARY: return "Array"; + } + + free (bufp); + n = asprintf (&bufp, _(": %d/%d"), sym->n_sclass, sym->n_type); + if (n < 0) + fatal ("%s", xstrerror (errno)); + return bufp; } /* Print symbol name NAME, read from ABFD, with printf format FORM, @@ -430,6 +478,12 @@ filter_symbols (bfd *abfd, bfd_boolean is_dynamic, void *minisyms, if (sym == NULL) bfd_fatal (bfd_get_filename (abfd)); + if (sym->name[0] == '_' + && sym->name[1] == '_' + && strcmp (sym->name + (sym->name[2] == '_'), "__gnu_lto_slim") == 0) + non_fatal (_("%s: plugin needed to handle lto object"), + bfd_get_filename (abfd)); + if (undefined_only) keep = bfd_is_und_section (sym->section); else if (external_only) @@ -631,7 +685,8 @@ size_forward1 (const void *P_x, const void *P_y) #define file_symbol(s, sn, snl) \ (((s)->flags & BSF_FILE) != 0 \ - || ((sn)[(snl) - 2] == '.' \ + || ((snl) > 2 \ + && (sn)[(snl) - 2] == '.' \ && ((sn)[(snl) - 1] == 'o' \ || (sn)[(snl) - 1] == 'a'))) @@ -723,9 +778,14 @@ sort_symbols_by_size (bfd *abfd, bfd_boolean is_dynamic, void *minisyms, sec = bfd_get_section (sym); - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) + /* Synthetic symbols don't have a full type set of data available, thus + we can't rely on that information for the symbol size. Ditto for + bfd/section.c:global_syms like *ABS*. */ + if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0 + && bfd_get_flavour (abfd) == bfd_target_elf_flavour) sz = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; - else if (bfd_is_com_section (sec)) + else if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0 + && bfd_is_com_section (sec)) sz = sym->value; else { @@ -798,7 +858,10 @@ get_relocs (bfd *abfd, asection *sec, void *dataarg) /* Print a single symbol. */ static void -print_symbol (bfd *abfd, asymbol *sym, bfd_vma ssize, bfd *archive_bfd) +print_symbol (bfd * abfd, + asymbol * sym, + bfd_vma ssize, + bfd * archive_bfd) { symbol_info syminfo; struct extended_symbol_info info; @@ -808,14 +871,39 @@ print_symbol (bfd *abfd, asymbol *sym, bfd_vma ssize, bfd *archive_bfd) format->print_symbol_filename (archive_bfd, abfd); bfd_get_symbol_info (abfd, sym, &syminfo); + info.sinfo = &syminfo; info.ssize = ssize; - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) - info.elfinfo = (elf_symbol_type *) sym; + /* Synthetic symbols do not have a full symbol type set of data available. + Nor do bfd/section.c:global_syms like *ABS*. */ + if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) != 0) + { + info.elfinfo = NULL; + info.coffinfo = NULL; + } else - info.elfinfo = NULL; + { + info.elfinfo = elf_symbol_from (abfd, sym); + info.coffinfo = coff_symbol_from (sym); + } + format->print_symbol_info (&info, abfd); + if (with_symbol_versions) + { + const char * version_string = NULL; + bfd_boolean hidden = FALSE; + + if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0) + version_string = bfd_get_symbol_version_string (abfd, sym, &hidden); + + if (bfd_is_und_section (bfd_get_section (sym))) + hidden = TRUE; + + if (version_string && *version_string != '\0') + printf (hidden ? "@%s" : "@@%s", version_string); + } + if (line_numbers) { static asymbol **syms; @@ -933,12 +1021,15 @@ print_symbol (bfd *abfd, asymbol *sym, bfd_vma ssize, bfd *archive_bfd) /* Print the symbols when sorting by size. */ static void -print_size_symbols (bfd *abfd, bfd_boolean is_dynamic, - struct size_sym *symsizes, long symcount, - bfd *archive_bfd) +print_size_symbols (bfd * abfd, + bfd_boolean is_dynamic, + struct size_sym * symsizes, + long symcount, + bfd * archive_bfd) { asymbol *store; - struct size_sym *from, *fromend; + struct size_sym *from; + struct size_sym *fromend; store = bfd_make_empty_symbol (abfd); if (store == NULL) @@ -946,6 +1037,7 @@ print_size_symbols (bfd *abfd, bfd_boolean is_dynamic, from = symsizes; fromend = from + symcount; + for (; from < fromend; from++) { asymbol *sym; @@ -959,15 +1051,25 @@ print_size_symbols (bfd *abfd, bfd_boolean is_dynamic, } -/* Print the symbols. If ARCHIVE_BFD is non-NULL, it is the archive - containing ABFD. */ +/* Print the symbols of ABFD that are held in MINISYMS. + + If ARCHIVE_BFD is non-NULL, it is the archive containing ABFD. + + SYMCOUNT is the number of symbols in MINISYMS. + + SIZE is the size of a symbol in MINISYMS. */ static void -print_symbols (bfd *abfd, bfd_boolean is_dynamic, void *minisyms, long symcount, - unsigned int size, bfd *archive_bfd) +print_symbols (bfd * abfd, + bfd_boolean is_dynamic, + void * minisyms, + long symcount, + unsigned int size, + bfd * archive_bfd) { asymbol *store; - bfd_byte *from, *fromend; + bfd_byte *from; + bfd_byte *fromend; store = bfd_make_empty_symbol (abfd); if (store == NULL) @@ -975,6 +1077,7 @@ print_symbols (bfd *abfd, bfd_boolean is_dynamic, void *minisyms, long symcount, from = (bfd_byte *) minisyms; fromend = from + symcount * size; + for (; from < fromend; from += size) { asymbol *sym; @@ -996,6 +1099,7 @@ display_rel_file (bfd *abfd, bfd *archive_bfd) void *minisyms; unsigned int size; struct size_sym *symsizes; + asymbol *synthsyms = NULL; if (! dynamic) { @@ -1026,12 +1130,11 @@ display_rel_file (bfd *abfd, bfd *archive_bfd) if (show_synthetic && size == sizeof (asymbol *)) { - asymbol *synthsyms; - long synth_count; asymbol **static_syms = NULL; asymbol **dyn_syms = NULL; long static_count = 0; long dyn_count = 0; + long synth_count; if (dynamic) { @@ -1053,6 +1156,7 @@ display_rel_file (bfd *abfd, bfd *archive_bfd) bfd_fatal (bfd_get_filename (abfd)); } } + synth_count = bfd_get_synthetic_symtab (abfd, static_count, static_syms, dyn_count, dyn_syms, &synthsyms); if (synth_count > 0) @@ -1102,6 +1206,8 @@ display_rel_file (bfd *abfd, bfd *archive_bfd) else print_size_symbols (abfd, dynamic, symsizes, symcount, archive_bfd); + if (synthsyms) + free (synthsyms); free (minisyms); free (symsizes); } @@ -1173,6 +1279,8 @@ display_archive (bfd *file) bfd_close (last_arfile); lineno_cache_bfd = NULL; lineno_cache_rel_bfd = NULL; + if (arfile == last_arfile) + return; } last_arfile = arfile; } @@ -1426,7 +1534,6 @@ print_symbol_info_bsd (struct extended_symbol_info *info, bfd *abfd) print_value (abfd, SYM_SIZE (info)); else print_value (abfd, SYM_VALUE (info)); - if (print_size && SYM_SIZE (info)) { printf (" "); @@ -1477,7 +1584,10 @@ print_symbol_info_sysv (struct extended_symbol_info *info, bfd *abfd) /* Type, Size, Line, Section */ if (info->elfinfo) printf ("%18s|", - get_symbol_type (ELF_ST_TYPE (info->elfinfo->internal_elf_sym.st_info))); + get_elf_symbol_type (ELF_ST_TYPE (info->elfinfo->internal_elf_sym.st_info))); + else if (info->coffinfo) + printf ("%18s|", + get_coff_symbol_type (&info->coffinfo->native->u.syment)); else printf (" |"); @@ -1493,6 +1603,8 @@ print_symbol_info_sysv (struct extended_symbol_info *info, bfd *abfd) if (info->elfinfo) printf("| |%s", info->elfinfo->symbol.section->name); + else if (info->coffinfo) + printf("| |%s", info->coffinfo->symbol.section->name); else printf("| |"); } @@ -1533,6 +1645,7 @@ main (int argc, char **argv) program_name = *argv; xmalloc_set_program_name (program_name); + bfd_set_error_program_name (program_name); #if BFD_SUPPORTS_PLUGINS bfd_plugin_set_program_name (program_name); #endif @@ -1646,7 +1759,6 @@ main (int argc, char **argv) case OPTION_PLUGIN: /* --plugin */ #if BFD_SUPPORTS_PLUGINS - plugin_target = "plugin"; bfd_plugin_set_plugin (optarg); #else fatal (_("sorry - this program has been built without plugin support\n")); @@ -1690,15 +1802,6 @@ main (int argc, char **argv) END_PROGRESS (program_name); -#ifdef HAVE_SBRK - if (show_stats) - { - char *lim = (char *) sbrk (0); - - non_fatal (_("data size %ld"), (long) (lim - (char *) &environ)); - } -#endif - exit (retval); return retval; }