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|
/* nm.c -- Describe symbol table of a rel file.
Copyright 1991, 92, 93, 94 Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "bucomm.h"
#include "getopt.h"
#include "aout/stab_gnu.h"
#include "aout/ranlib.h"
#include "demangle.h"
static boolean
display_file PARAMS ((char *filename));
static void
display_rel_file PARAMS ((bfd * file, bfd * archive));
static unsigned int
filter_symbols PARAMS ((bfd * file, asymbol ** syms, unsigned long symcount));
static void
print_symbols PARAMS ((bfd * file, asymbol ** syms, unsigned long symcount,
bfd * archive));
static void
print_symdef_entry PARAMS ((bfd * abfd));
/* The output formatting functions. */
static void
print_object_filename_bsd PARAMS ((char *filename));
static void
print_object_filename_sysv PARAMS ((char *filename));
static void
print_object_filename_posix PARAMS ((char *filename));
static void
print_archive_filename_bsd PARAMS ((char *filename));
static void
print_archive_filename_sysv PARAMS ((char *filename));
static void
print_archive_filename_posix PARAMS ((char *filename));
static void
print_archive_member_bsd PARAMS ((char *archive, CONST char *filename));
static void
print_archive_member_sysv PARAMS ((char *archive, CONST char *filename));
static void
print_archive_member_posix PARAMS ((char *archive, CONST char *filename));
static void
print_symbol_filename_bsd PARAMS ((bfd * archive_bfd, bfd * abfd));
static void
print_symbol_filename_sysv PARAMS ((bfd * archive_bfd, bfd * abfd));
static void
print_symbol_filename_posix PARAMS ((bfd * archive_bfd, bfd * abfd));
static void
print_symbol_info_bsd PARAMS ((symbol_info * info, bfd * abfd));
static void
print_symbol_info_sysv PARAMS ((symbol_info * info, bfd * abfd));
static void
print_symbol_info_posix PARAMS ((symbol_info * info, bfd * abfd));
/* Support for different output formats. */
struct output_fns
{
/* Print the name of an object file given on the command line. */
void (*print_object_filename) PARAMS ((char *filename));
/* Print the name of an archive file given on the command line. */
void (*print_archive_filename) PARAMS ((char *filename));
/* Print the name of an archive member file. */
void (*print_archive_member) PARAMS ((char *archive, CONST char *filename));
/* Print the name of the file (and archive, if there is one)
containing a symbol. */
void (*print_symbol_filename) PARAMS ((bfd * archive_bfd, bfd * abfd));
/* Print a line of information about a symbol. */
void (*print_symbol_info) PARAMS ((symbol_info * info, bfd * abfd));
};
static struct output_fns formats[] =
{
{print_object_filename_bsd,
print_archive_filename_bsd,
print_archive_member_bsd,
print_symbol_filename_bsd,
print_symbol_info_bsd},
{print_object_filename_sysv,
print_archive_filename_sysv,
print_archive_member_sysv,
print_symbol_filename_sysv,
print_symbol_info_sysv},
{print_object_filename_posix,
print_archive_filename_posix,
print_archive_member_posix,
print_symbol_filename_posix,
print_symbol_info_posix}
};
/* Indices in `formats'. */
#define FORMAT_BSD 0
#define FORMAT_SYSV 1
#define FORMAT_POSIX 2
#define FORMAT_DEFAULT FORMAT_BSD
/* The output format to use. */
static struct output_fns *format = &formats[FORMAT_DEFAULT];
/* Command options. */
static int do_demangle = 0; /* Pretty print C++ symbol names. */
static int external_only = 0; /* print external symbols only */
static int no_sort = 0; /* don't sort; print syms in order found */
static int print_debug_syms = 0; /* print debugger-only symbols too */
static int print_armap = 0; /* describe __.SYMDEF data in archive files. */
static int reverse_sort = 0; /* sort in downward(alpha or numeric) order */
static int sort_numerically = 0; /* sort in numeric rather than alpha order */
static int undefined_only = 0; /* print undefined symbols only */
static int show_version = 0; /* show the version number */
/* 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. */
static int filename_per_symbol = 0; /* Once per symbol, at start of line. */
/* Print formats for printing a symbol value. */
#ifdef HOST_64_BIT
static char value_format[] = "%08x%08x";
#else
static char value_format[] = "%08lx";
#endif
/* Print formats for printing stab info. */
static char other_format[] = "%02x";
static char desc_format[] = "%04x";
/* IMPORT */
extern char *program_name;
extern char *program_version;
extern char *target;
extern int print_version;
static struct option long_options[] =
{
{"debug-syms", no_argument, &print_debug_syms, 1},
{"demangle", no_argument, &do_demangle, 1},
{"extern-only", no_argument, &external_only, 1},
{"format", required_argument, 0, 'f'},
{"help", no_argument, 0, 'h'},
{"no-sort", no_argument, &no_sort, 1},
{"numeric-sort", no_argument, &sort_numerically, 1},
{"portability", no_argument, 0, 'P'},
{"print-armap", no_argument, &print_armap, 1},
{"print-file-name", no_argument, 0, 'o'},
{"radix", required_argument, 0, 't'},
{"reverse-sort", no_argument, &reverse_sort, 1},
{"target", required_argument, 0, 200},
{"undefined-only", no_argument, &undefined_only, 1},
{"version", no_argument, &show_version, 1},
{0, no_argument, 0, 0}
};
/* Some error-reporting functions */
void
usage (stream, status)
FILE *stream;
int status;
{
fprintf (stream, "\
Usage: %s [-aABCgnopPrsuvV] [-t radix] [--radix=radix] [--target=bfdname]\n\
[--debug-syms] [--extern-only] [--print-armap] [--print-file-name]\n\
[--numeric-sort] [--no-sort] [--reverse-sort] [--undefined-only]\n\
[--portability] [-f {bsd,sysv,posix}] [--format={bsd,sysv,posix}]\n\
[--demangle] [--version] [--help] [file...]\n",
program_name);
exit (status);
}
/* Set the radix for the symbol value and size according to RADIX. */
void
set_print_radix (radix)
char *radix;
{
switch (*radix)
{
case 'd':
case 'o':
case 'x':
#ifdef HOST_64_BIT
value_format[3] = value_format[7] = *radix;
#else
value_format[4] = *radix;
#endif
other_format[3] = desc_format[3] = *radix;
break;
default:
fprintf (stderr, "%s: %s: invalid radix\n", program_name, radix);
exit (1);
}
}
void
set_output_format (f)
char *f;
{
int i;
switch (*f)
{
case 'b':
case 'B':
i = FORMAT_BSD;
break;
case 'p':
case 'P':
i = FORMAT_POSIX;
break;
case 's':
case 'S':
i = FORMAT_SYSV;
break;
default:
fprintf (stderr, "%s: %s: invalid output format\n", program_name, f);
exit (1);
}
format = &formats[i];
}
int
main (argc, argv)
int argc;
char **argv;
{
int c;
int retval;
program_name = *argv;
bfd_init ();
while ((c = getopt_long (argc, argv, "aABCf:gnopPrst:uvV", long_options, (int *) 0)) != EOF)
{
switch (c)
{
case 'a':
print_debug_syms = 1;
break;
case 'A':
case 'o':
filename_per_symbol = 1;
break;
case 'B': /* For MIPS compatibility. */
set_output_format ("bsd");
break;
case 'C':
do_demangle = 1;
break;
case 'f':
set_output_format (optarg);
break;
case 'g':
external_only = 1;
break;
case 'h':
usage (stdout, 0);
case 'n':
case 'v':
sort_numerically = 1;
break;
case 'p':
no_sort = 1;
break;
case 'P':
set_output_format ("posix");
break;
case 'r':
reverse_sort = 1;
break;
case 's':
print_armap = 1;
break;
case 't':
set_print_radix (optarg);
break;
case 'u':
undefined_only = 1;
break;
case 'V':
show_version = 1;
break;
case 200: /* --target */
target = optarg;
break;
case 0: /* A long option that just sets a flag. */
break;
default:
usage (stderr, 1);
}
}
if (show_version)
{
printf ("GNU %s version %s\n", program_name, program_version);
exit (0);
}
/* OK, all options now parsed. If no filename specified, do a.out. */
if (optind == argc)
return !display_file ("a.out");
retval = 0;
if (argc - optind > 1)
filename_per_file = 1;
/* We were given several filenames to do. */
while (optind < argc)
{
if (!display_file (argv[optind++]))
retval++;
}
exit (retval);
return retval;
}
static void
display_archive (file)
bfd *file;
{
bfd *arfile = NULL;
(*format->print_archive_filename) (bfd_get_filename (file));
if (print_armap)
print_symdef_entry (file);
for (;;)
{
arfile = bfd_openr_next_archived_file (file, arfile);
if (arfile == NULL)
{
if (bfd_error != no_more_archived_files)
bfd_fatal (bfd_get_filename (file));
break;
}
if (bfd_check_format (arfile, bfd_object))
{
(*format->print_archive_member) (bfd_get_filename (file),
bfd_get_filename (arfile));
display_rel_file (arfile, file);
}
else
printf ("%s: not an object file\n", arfile->filename);
}
}
static boolean
display_file (filename)
char *filename;
{
boolean retval = true;
bfd *file;
char **matching;
file = bfd_openr (filename, target);
if (file == NULL)
{
bfd_nonfatal (filename);
return false;
}
if (bfd_check_format (file, bfd_archive))
{
display_archive (file);
}
else if (bfd_check_format_matches (file, bfd_object, &matching))
{
(*format->print_object_filename) (filename);
display_rel_file (file, NULL);
}
else
{
bfd_nonfatal (filename);
if (bfd_error == file_ambiguously_recognized)
{
list_matching_formats (matching);
free (matching);
}
retval = false;
}
if (bfd_close (file) == false)
bfd_fatal (filename);
return retval;
}
/* Symbol-sorting predicates */
#define valueof(x) ((x)->section->vma + (x)->value)
int
numeric_forward (x, y)
CONST void *x;
CONST void *y;
{
return (valueof (*(asymbol **) x) - valueof (*(asymbol **) y));
}
int
numeric_reverse (x, y)
CONST void *x;
CONST void *y;
{
return (valueof (*(asymbol **) y) - valueof (*(asymbol **) x));
}
int
non_numeric_forward (x, y)
CONST void *x;
CONST void *y;
{
CONST char *xn = (*(asymbol **) x)->name;
CONST char *yn = (*(asymbol **) y)->name;
return ((xn == NULL) ? ((yn == NULL) ? 0 : -1) :
((yn == NULL) ? 1 : strcmp (xn, yn)));
}
int
non_numeric_reverse (x, y)
CONST void *x;
CONST void *y;
{
return -(non_numeric_forward (x, y));
}
static int (*(sorters[2][2])) PARAMS ((CONST void *, CONST void *)) =
{
{ non_numeric_forward, non_numeric_reverse },
{ numeric_forward, numeric_reverse }
};
/* If ARCHIVE_BFD is non-NULL, it is the archive containing ABFD. */
static void
display_rel_file (abfd, archive_bfd)
bfd *abfd;
bfd *archive_bfd;
{
unsigned int storage;
asymbol **syms;
unsigned int symcount = 0;
if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
{
printf ("No symbols in \"%s\".\n", bfd_get_filename (abfd));
return;
}
storage = get_symtab_upper_bound (abfd);
if (storage == 0)
{
nosymz:
fprintf (stderr, "%s: Symflags set but there are none?\n",
bfd_get_filename (abfd));
return;
}
syms = (asymbol **) xmalloc (storage);
symcount = bfd_canonicalize_symtab (abfd, syms);
if (symcount == 0)
{
free (syms);
goto nosymz;
}
/* Discard the symbols we don't want to print.
It's OK to do this in place; we'll free the storage anyway
(after printing). */
symcount = filter_symbols (abfd, syms, symcount);
if (!no_sort)
qsort ((char *) syms, symcount, sizeof (asymbol *),
sorters[sort_numerically][reverse_sort]);
print_symbols (abfd, syms, symcount, archive_bfd);
free (syms);
}
/* Choose which symbol entries to print;
compact them downward to get rid of the rest.
Return the number of symbols to be printed. */
static unsigned int
filter_symbols (abfd, syms, symcount)
bfd *abfd; /* Unused. */
asymbol **syms;
unsigned long symcount;
{
asymbol **from, **to;
unsigned int src_count;
unsigned int dst_count = 0;
asymbol *sym;
for (from = to = syms, src_count = 0; src_count < symcount; src_count++)
{
int keep = 0;
flagword flags = (from[src_count])->flags;
sym = from[src_count];
if (undefined_only)
keep = sym->section == &bfd_und_section;
else if (external_only)
keep = ((flags & BSF_GLOBAL)
|| (sym->section == &bfd_und_section)
|| (bfd_is_com_section (sym->section)));
else
keep = 1;
if (!print_debug_syms && ((flags & BSF_DEBUGGING) != 0))
keep = 0;
if (keep)
to[dst_count++] = from[src_count];
}
return dst_count;
}
/* Print symbol name NAME, read from ABFD, with printf format FORMAT,
demangling it if requested. */
static void
print_symname (format, name, abfd)
char *format, *name;
bfd *abfd;
{
if (do_demangle)
{
char *res;
/* In this mode, give a user-level view of the symbol name
even if it's not mangled; strip off any leading
underscore. */
if (bfd_get_symbol_leading_char (abfd) == name[0])
name++;
res = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
if (res)
{
printf (format, res);
free (res);
return;
}
}
printf (format, name);
}
/* If ARCHIVE_BFD is non-NULL, it is the archive containing ABFD. */
static void
print_symbols (abfd, syms, symcount, archive_bfd)
bfd *abfd;
asymbol **syms;
unsigned long symcount;
bfd *archive_bfd;
{
asymbol **sym = syms, **end = syms + symcount;
symbol_info syminfo;
for (; sym < end; ++sym)
{
(*format->print_symbol_filename) (archive_bfd, abfd);
if (undefined_only)
{
if ((*sym)->section == &bfd_und_section)
{
print_symname ("%s\n", (*sym)->name, abfd);
}
}
else
{
asymbol *p = *sym;
if (p)
{
bfd_get_symbol_info (abfd, p, &syminfo);
(*format->print_symbol_info) (&syminfo, abfd);
putchar ('\n');
}
}
}
}
/* The following 3 groups of functions are called unconditionally,
once at the start of processing each file of the appropriate type.
They should check `filename_per_file' and `filename_per_symbol',
as appropriate for their output format, to determine whether to
print anything. */
/* Print the name of an object file given on the command line. */
static void
print_object_filename_bsd (filename)
char *filename;
{
if (filename_per_file && !filename_per_symbol)
printf ("\n%s:\n", filename);
}
static void
print_object_filename_sysv (filename)
char *filename;
{
if (undefined_only)
printf ("\n\nUndefined symbols from %s:\n\n", filename);
else
printf ("\n\nSymbols from %s:\n\n", filename);
printf ("\
Name Value Class Type Size Line Section\n\n");
}
static void
print_object_filename_posix (filename)
char *filename;
{
if (filename_per_file && !filename_per_symbol)
printf ("%s:\n", filename);
}
/* Print the name of an archive file given on the command line. */
static void
print_archive_filename_bsd (filename)
char *filename;
{
if (filename_per_file)
printf ("\n%s:\n", filename);
}
static void
print_archive_filename_sysv (filename)
char *filename;
{
}
static void
print_archive_filename_posix (filename)
char *filename;
{
}
/* Print the name of an archive member file. */
static void
print_archive_member_bsd (archive, filename)
char *archive;
CONST char *filename;
{
if (!filename_per_symbol)
printf ("\n%s:\n", filename);
}
static void
print_archive_member_sysv (archive, filename)
char *archive;
CONST char *filename;
{
if (undefined_only)
printf ("\n\nUndefined symbols from %s[%s]:\n\n", archive, filename);
else
printf ("\n\nSymbols from %s[%s]:\n\n", archive, filename);
printf ("\
Name Value Class Type Size Line Section\n\n");
}
static void
print_archive_member_posix (archive, filename)
char *archive;
CONST char *filename;
{
if (!filename_per_symbol)
printf ("%s[%s]:\n", archive, filename);
}
/* Print the name of the file (and archive, if there is one)
containing a symbol. */
static void
print_symbol_filename_bsd (archive_bfd, abfd)
bfd *archive_bfd, *abfd;
{
if (filename_per_symbol)
{
if (archive_bfd)
printf ("%s:", bfd_get_filename (archive_bfd));
printf ("%s:", bfd_get_filename (abfd));
}
}
static void
print_symbol_filename_sysv (archive_bfd, abfd)
bfd *archive_bfd, *abfd;
{
if (filename_per_symbol)
{
if (archive_bfd)
printf ("%s:", bfd_get_filename (archive_bfd));
printf ("%s:", bfd_get_filename (abfd));
}
}
static void
print_symbol_filename_posix (archive_bfd, abfd)
bfd *archive_bfd, *abfd;
{
if (filename_per_symbol)
{
if (archive_bfd)
printf ("%s[%s]: ", bfd_get_filename (archive_bfd),
bfd_get_filename (abfd));
else
printf ("%s: ", bfd_get_filename (abfd));
}
}
/* Print a line of information about a symbol. */
static void
print_symbol_info_bsd (info, abfd)
symbol_info *info;
bfd *abfd;
{
if (info->type == 'U')
printf (" ");
else
{
#ifdef HOST_64_BIT
printf (value_format, uint64_typeHIGH (info->value),
uint64_typeLOW (info->value));
#else
printf (value_format, info->value);
#endif
}
printf (" %c", info->type);
if (info->type == '-')
{
/* A stab. */
printf (" ");
printf (other_format, info->stab_other);
printf (" ");
printf (desc_format, info->stab_desc);
printf (" %5s", info->stab_name);
}
print_symname (" %s", info->name, abfd);
}
static void
print_symbol_info_sysv (info, abfd)
symbol_info *info;
bfd *abfd;
{
print_symname ("%-20s|", info->name, abfd); /* Name */
if (info->type == 'U')
printf (" "); /* Value */
else
{
#ifdef HOST_64_BIT
printf (value_format, uint64_typeHIGH (info->value),
uint64_typeLOW (info->value));
#else
printf (value_format, info->value);
#endif
}
printf ("| %c |", info->type); /* Class */
if (info->type == '-')
{
/* A stab. */
printf ("%18s| ", info->stab_name); /* (C) Type */
printf (desc_format, info->stab_desc); /* Size */
printf ("| |"); /* Line, Section */
}
else
printf (" | | |"); /* Type, Size, Line, Section */
}
static void
print_symbol_info_posix (info, abfd)
symbol_info *info;
bfd *abfd;
{
print_symname ("%s ", info->name, abfd);
printf ("%c ", info->type);
if (info->type == 'U')
printf (" ");
else
{
#ifdef HOST_64_BIT
printf (value_format, uint64_typeHIGH (info->value),
uint64_typeLOW (info->value));
#else
printf (value_format, info->value);
#endif
}
/* POSIX.2 wants the symbol size printed here, when applicable;
BFD currently doesn't provide it, so we take the easy way out by
considering it to never be applicable. */
}
static void
print_symdef_entry (abfd)
bfd *abfd;
{
symindex idx = BFD_NO_MORE_SYMBOLS;
carsym *thesym;
boolean everprinted = false;
for (idx = bfd_get_next_mapent (abfd, idx, &thesym);
idx != BFD_NO_MORE_SYMBOLS;
idx = bfd_get_next_mapent (abfd, idx, &thesym))
{
bfd *elt;
if (!everprinted)
{
printf ("\nArchive index:\n");
everprinted = true;
}
elt = bfd_get_elt_at_index (abfd, idx);
if (thesym->name != (char *) NULL)
{
printf ("%s in %s\n", thesym->name, bfd_get_filename (elt));
}
}
}
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