| /* ldmisc.c |
| Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 2000, 2002, 2003 |
| Free Software Foundation, Inc. |
| Written by Steve Chamberlain of Cygnus Support. |
| |
| This file is part of GLD, the Gnu Linker. |
| |
| GLD 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, or (at your option) |
| any later version. |
| |
| GLD 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 GLD; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "bfdlink.h" |
| #include "sysdep.h" |
| #include "libiberty.h" |
| #include "demangle.h" |
| #include <stdarg.h> |
| #include "ld.h" |
| #include "ldmisc.h" |
| #include "ldexp.h" |
| #include "ldlang.h" |
| #include <ldgram.h> |
| #include "ldlex.h" |
| #include "ldmain.h" |
| #include "ldfile.h" |
| |
| /* |
| %% literal % |
| %F error is fatal |
| %P print program name |
| %S print script file and linenumber |
| %E current bfd error or errno |
| %I filename from a lang_input_statement_type |
| %B filename from a bfd |
| %T symbol name |
| %X no object output, fail return |
| %V hex bfd_vma |
| %v hex bfd_vma, no leading zeros |
| %W hex bfd_vma with 0x with no leading zeros taking up 8 spaces |
| %C clever filename:linenumber with function |
| %D like %C, but no function name |
| %G like %D, but only function name |
| %R info about a relent |
| %s arbitrary string, like printf |
| %d integer, like printf |
| %u integer, like printf |
| */ |
| |
| static void |
| vfinfo (FILE *fp, const char *fmt, va_list arg) |
| { |
| bfd_boolean fatal = FALSE; |
| |
| while (*fmt != '\0') |
| { |
| while (*fmt != '%' && *fmt != '\0') |
| { |
| putc (*fmt, fp); |
| fmt++; |
| } |
| |
| if (*fmt == '%') |
| { |
| fmt++; |
| switch (*fmt++) |
| { |
| default: |
| fprintf (fp, "%%%c", fmt[-1]); |
| break; |
| |
| case '%': |
| /* literal % */ |
| putc ('%', fp); |
| break; |
| |
| case 'X': |
| /* no object output, fail return */ |
| config.make_executable = FALSE; |
| break; |
| |
| case 'V': |
| /* hex bfd_vma */ |
| { |
| bfd_vma value = va_arg (arg, bfd_vma); |
| fprintf_vma (fp, value); |
| } |
| break; |
| |
| case 'v': |
| /* hex bfd_vma, no leading zeros */ |
| { |
| char buf[100]; |
| char *p = buf; |
| bfd_vma value = va_arg (arg, bfd_vma); |
| sprintf_vma (p, value); |
| while (*p == '0') |
| p++; |
| if (!*p) |
| p--; |
| fputs (p, fp); |
| } |
| break; |
| |
| case 'W': |
| /* hex bfd_vma with 0x with no leading zeroes taking up |
| 8 spaces. */ |
| { |
| char buf[100]; |
| bfd_vma value; |
| char *p; |
| int len; |
| |
| value = va_arg (arg, bfd_vma); |
| sprintf_vma (buf, value); |
| for (p = buf; *p == '0'; ++p) |
| ; |
| if (*p == '\0') |
| --p; |
| len = strlen (p); |
| while (len < 8) |
| { |
| putc (' ', fp); |
| ++len; |
| } |
| fprintf (fp, "0x%s", p); |
| } |
| break; |
| |
| case 'T': |
| /* Symbol name. */ |
| { |
| const char *name = va_arg (arg, const char *); |
| |
| if (name == NULL || *name == 0) |
| fprintf (fp, _("no symbol")); |
| else if (! demangling) |
| fprintf (fp, "%s", name); |
| else |
| { |
| char *demangled; |
| |
| demangled = demangle (name); |
| fprintf (fp, "%s", demangled); |
| free (demangled); |
| } |
| } |
| break; |
| |
| case 'B': |
| /* filename from a bfd */ |
| { |
| bfd *abfd = va_arg (arg, bfd *); |
| if (abfd->my_archive) |
| fprintf (fp, "%s(%s)", abfd->my_archive->filename, |
| abfd->filename); |
| else |
| fprintf (fp, "%s", abfd->filename); |
| } |
| break; |
| |
| case 'F': |
| /* Error is fatal. */ |
| fatal = TRUE; |
| break; |
| |
| case 'P': |
| /* Print program name. */ |
| fprintf (fp, "%s", program_name); |
| break; |
| |
| case 'E': |
| /* current bfd error or errno */ |
| fprintf (fp, "%s", bfd_errmsg (bfd_get_error ())); |
| break; |
| |
| case 'I': |
| /* filename from a lang_input_statement_type */ |
| { |
| lang_input_statement_type *i; |
| |
| i = va_arg (arg, lang_input_statement_type *); |
| if (bfd_my_archive (i->the_bfd) != NULL) |
| fprintf (fp, "(%s)", |
| bfd_get_filename (bfd_my_archive (i->the_bfd))); |
| fprintf (fp, "%s", i->local_sym_name); |
| if (bfd_my_archive (i->the_bfd) == NULL |
| && strcmp (i->local_sym_name, i->filename) != 0) |
| fprintf (fp, " (%s)", i->filename); |
| } |
| break; |
| |
| case 'S': |
| /* Print script file and linenumber. */ |
| if (parsing_defsym) |
| fprintf (fp, "--defsym %s", lex_string); |
| else if (ldfile_input_filename != NULL) |
| fprintf (fp, "%s:%u", ldfile_input_filename, lineno); |
| else |
| fprintf (fp, _("built in linker script:%u"), lineno); |
| break; |
| |
| case 'R': |
| /* Print all that's interesting about a relent. */ |
| { |
| arelent *relent = va_arg (arg, arelent *); |
| |
| lfinfo (fp, "%s+0x%v (type %s)", |
| (*(relent->sym_ptr_ptr))->name, |
| relent->addend, |
| relent->howto->name); |
| } |
| break; |
| |
| case 'C': |
| case 'D': |
| case 'G': |
| /* Clever filename:linenumber with function name if possible. |
| The arguments are a BFD, a section, and an offset. */ |
| { |
| static bfd *last_bfd; |
| static char *last_file = NULL; |
| static char *last_function = NULL; |
| bfd *abfd; |
| asection *section; |
| bfd_vma offset; |
| lang_input_statement_type *entry; |
| asymbol **asymbols; |
| const char *filename; |
| const char *functionname; |
| unsigned int linenumber; |
| bfd_boolean discard_last; |
| |
| abfd = va_arg (arg, bfd *); |
| section = va_arg (arg, asection *); |
| offset = va_arg (arg, bfd_vma); |
| |
| entry = (lang_input_statement_type *) abfd->usrdata; |
| if (entry != (lang_input_statement_type *) NULL |
| && entry->asymbols != (asymbol **) NULL) |
| asymbols = entry->asymbols; |
| else |
| { |
| long symsize; |
| long symbol_count; |
| |
| symsize = bfd_get_symtab_upper_bound (abfd); |
| if (symsize < 0) |
| einfo (_("%B%F: could not read symbols\n"), abfd); |
| asymbols = xmalloc (symsize); |
| symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
| if (symbol_count < 0) |
| einfo (_("%B%F: could not read symbols\n"), abfd); |
| if (entry != (lang_input_statement_type *) NULL) |
| { |
| entry->asymbols = asymbols; |
| entry->symbol_count = symbol_count; |
| } |
| } |
| |
| lfinfo (fp, "%B(%s+0x%v)", abfd, section->name, offset); |
| |
| discard_last = TRUE; |
| if (bfd_find_nearest_line (abfd, section, asymbols, offset, |
| &filename, &functionname, |
| &linenumber)) |
| { |
| bfd_boolean need_colon = TRUE; |
| |
| if (functionname != NULL && fmt[-1] == 'C') |
| { |
| if (last_bfd == NULL |
| || last_file == NULL |
| || last_function == NULL |
| || last_bfd != abfd |
| || (filename != NULL |
| && strcmp (last_file, filename) != 0) |
| || strcmp (last_function, functionname) != 0) |
| { |
| lfinfo (fp, _(": In function `%T':\n"), |
| functionname); |
| need_colon = FALSE; |
| |
| last_bfd = abfd; |
| if (last_file != NULL) |
| free (last_file); |
| last_file = NULL; |
| if (filename) |
| last_file = xstrdup (filename); |
| if (last_function != NULL) |
| free (last_function); |
| last_function = xstrdup (functionname); |
| } |
| discard_last = FALSE; |
| } |
| |
| if (filename != NULL) |
| { |
| if (need_colon) |
| putc (':', fp); |
| fputs (filename, fp); |
| } |
| |
| if (functionname != NULL && fmt[-1] == 'G') |
| lfinfo (fp, ":%T", functionname); |
| else if (filename != NULL && linenumber != 0) |
| fprintf (fp, ":%u", linenumber); |
| } |
| |
| if (asymbols != NULL && entry == NULL) |
| free (asymbols); |
| |
| if (discard_last) |
| { |
| last_bfd = NULL; |
| if (last_file != NULL) |
| { |
| free (last_file); |
| last_file = NULL; |
| } |
| if (last_function != NULL) |
| { |
| free (last_function); |
| last_function = NULL; |
| } |
| } |
| } |
| break; |
| |
| case 's': |
| /* arbitrary string, like printf */ |
| fprintf (fp, "%s", va_arg (arg, char *)); |
| break; |
| |
| case 'd': |
| /* integer, like printf */ |
| fprintf (fp, "%d", va_arg (arg, int)); |
| break; |
| |
| case 'u': |
| /* unsigned integer, like printf */ |
| fprintf (fp, "%u", va_arg (arg, unsigned int)); |
| break; |
| } |
| } |
| } |
| |
| if (config.fatal_warnings) |
| config.make_executable = FALSE; |
| |
| if (fatal) |
| xexit (1); |
| } |
| |
| /* Wrapper around cplus_demangle. Strips leading underscores and |
| other such chars that would otherwise confuse the demangler. */ |
| |
| char * |
| demangle (const char *name) |
| { |
| char *res; |
| const char *p; |
| |
| if (output_bfd != NULL |
| && bfd_get_symbol_leading_char (output_bfd) == name[0]) |
| ++name; |
| |
| /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF |
| or the MS PE format. These formats have a number of leading '.'s |
| on at least some symbols, so we remove all dots to avoid |
| confusing the demangler. */ |
| p = name; |
| while (*p == '.') |
| ++p; |
| |
| res = cplus_demangle (p, DMGL_ANSI | DMGL_PARAMS); |
| if (res) |
| { |
| size_t dots = p - name; |
| |
| /* Now put back any stripped dots. */ |
| if (dots != 0) |
| { |
| size_t len = strlen (res) + 1; |
| char *add_dots = xmalloc (len + dots); |
| |
| memcpy (add_dots, name, dots); |
| memcpy (add_dots + dots, res, len); |
| free (res); |
| res = add_dots; |
| } |
| return res; |
| } |
| return xstrdup (name); |
| } |
| |
| /* Format info message and print on stdout. */ |
| |
| /* (You would think this should be called just "info", but then you |
| would be hosed by LynxOS, which defines that name in its libc.) */ |
| |
| void |
| info_msg (const char *fmt, ...) |
| { |
| va_list arg; |
| |
| va_start (arg, fmt); |
| vfinfo (stdout, fmt, arg); |
| va_end (arg); |
| } |
| |
| /* ('e' for error.) Format info message and print on stderr. */ |
| |
| void |
| einfo (const char *fmt, ...) |
| { |
| va_list arg; |
| |
| va_start (arg, fmt); |
| vfinfo (stderr, fmt, arg); |
| va_end (arg); |
| } |
| |
| void |
| info_assert (const char *file, unsigned int line) |
| { |
| einfo (_("%F%P: internal error %s %d\n"), file, line); |
| } |
| |
| /* ('m' for map) Format info message and print on map. */ |
| |
| void |
| minfo (const char *fmt, ...) |
| { |
| va_list arg; |
| |
| va_start (arg, fmt); |
| vfinfo (config.map_file, fmt, arg); |
| va_end (arg); |
| } |
| |
| void |
| lfinfo (FILE *file, const char *fmt, ...) |
| { |
| va_list arg; |
| |
| va_start (arg, fmt); |
| vfinfo (file, fmt, arg); |
| va_end (arg); |
| } |
| |
| /* Functions to print the link map. */ |
| |
| void |
| print_space (void) |
| { |
| fprintf (config.map_file, " "); |
| } |
| |
| void |
| print_nl (void) |
| { |
| fprintf (config.map_file, "\n"); |
| } |
| |
| /* A more or less friendly abort message. In ld.h abort is defined to |
| call this function. */ |
| |
| void |
| ld_abort (const char *file, int line, const char *fn) |
| { |
| if (fn != NULL) |
| einfo (_("%P: internal error: aborting at %s line %d in %s\n"), |
| file, line, fn); |
| else |
| einfo (_("%P: internal error: aborting at %s line %d\n"), |
| file, line); |
| einfo (_("%P%F: please report this bug\n")); |
| xexit (1); |
| } |
| |
| bfd_boolean |
| error_handler (int id, const char *fmt, ...) |
| { |
| va_list arg; |
| |
| va_start (arg, fmt); |
| |
| switch (id) |
| { |
| default: |
| break; |
| |
| /* We can be called with |
| |
| error_handler (-LD_DEFINITION_IN_DISCARDED_SECTION, "", 0); |
| |
| to make this error non-fatal and |
| |
| error_handler (-LD_DEFINITION_IN_DISCARDED_SECTION, "", 1); |
| |
| to make this error fatal. */ |
| case -LD_DEFINITION_IN_DISCARDED_SECTION: |
| case LD_DEFINITION_IN_DISCARDED_SECTION: |
| { |
| static struct bfd_hash_table *hash; |
| static int fatal = 1; |
| const char *name; |
| |
| if (id == -LD_DEFINITION_IN_DISCARDED_SECTION) |
| { |
| fatal = va_arg (arg, int); |
| goto out; |
| } |
| |
| name = va_arg (arg, const char *); |
| /* Only warn once about a particular undefined symbol. */ |
| if (hash == NULL) |
| { |
| hash = xmalloc (sizeof (struct bfd_hash_table)); |
| if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
| einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
| } |
| |
| if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
| goto out; |
| |
| if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
| einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
| |
| if (fatal) |
| config.make_executable = FALSE; |
| } |
| break; |
| } |
| vfinfo (stderr, fmt, arg); |
| |
| out: |
| va_end (arg); |
| return TRUE; |
| } |