/* ldmisc.c Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. Written by Steve Chamberlain of Cygnus Support. This file is part of the 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 3 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include "sysdep.h" #include "bfd.h" #include "bfdlink.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" #include "elf-bfd.h" /* %% literal % %A section name from a section %B filename from a bfd %C clever filename:linenumber with function %D like %C, but no function name %E current bfd error or errno %F error is fatal %G like %D, but only function name %I filename from a lang_input_statement_type %P print program name %R info about a relent %S print script file and linenumber %T symbol name %V hex bfd_vma %W hex bfd_vma with 0x with no leading zeros taking up 8 spaces %X no object output, fail return %d integer, like printf %ld long, like printf %lu unsigned long, like printf %s arbitrary string, like printf %u integer, like printf %v hex bfd_vma, no leading zeros */ static void vfinfo (FILE *fp, const char *fmt, va_list arg, bfd_boolean is_warning) { bfd_boolean fatal = FALSE; while (*fmt != '\0') { while (*fmt != '%' && *fmt != '\0') { putc (*fmt, fp); fmt++; } if (*fmt == '%') { fmt++; switch (*fmt++) { 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")); break; } else if (demangling) { char *demangled; demangled = bfd_demangle (link_info.output_bfd, name, DMGL_ANSI | DMGL_PARAMS); if (demangled != NULL) { fprintf (fp, "%s", demangled); free (demangled); break; } } fprintf (fp, "%s", name); } break; case 'A': /* section name from a section */ { asection *sec = va_arg (arg, asection *); bfd *abfd = sec->owner; const char *group = NULL; struct coff_comdat_info *ci; fprintf (fp, "%s", sec->name); if (abfd != NULL && bfd_get_flavour (abfd) == bfd_target_elf_flavour && elf_next_in_group (sec) != NULL && (sec->flags & SEC_GROUP) == 0) group = elf_group_name (sec); else if (abfd != NULL && bfd_get_flavour (abfd) == bfd_target_coff_flavour && (ci = bfd_coff_get_comdat_section (sec->owner, sec)) != NULL) group = ci->name; if (group != NULL) fprintf (fp, "[%s]", group); } break; case 'B': /* filename from a bfd */ { bfd *abfd = va_arg (arg, bfd *); if (abfd == NULL) fprintf (fp, "%s generated", program_name); else 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; asymbol **asymbols = NULL; 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); if (abfd != NULL) { if (!bfd_generic_link_read_symbols (abfd)) einfo (_("%B%F: could not read symbols: %E\n"), abfd); asymbols = bfd_get_outsymbols (abfd); } /* The GNU Coding Standard requires that error messages be of the form: source-file-name:lineno: message We do not always have a line number available so if we cannot find them we print out the section name and offset instread. */ discard_last = TRUE; if (abfd != NULL && bfd_find_nearest_line (abfd, section, asymbols, offset, &filename, &functionname, &linenumber)) { if (functionname != NULL && fmt[-1] == 'C') { /* Detect the case where we are printing out a message for the same function as the last call to vinfo ("%C"). In this situation do not print out the ABFD filename or the function name again. Note - we do still print out the source filename, as this will allow programs that parse the linker's output (eg emacs) to correctly locate multiple errors in the same source file. */ 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, _("%B: In function `%T':\n"), abfd, functionname); 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; } else lfinfo (fp, "%B:", abfd); if (filename != NULL) fprintf (fp, "%s:", filename); if (functionname != NULL && fmt[-1] == 'G') lfinfo (fp, "%T", functionname); else if (filename != NULL && linenumber != 0) fprintf (fp, "%u", linenumber); else lfinfo (fp, "(%A+0x%v)", section, offset); } else lfinfo (fp, "%B:(%A+0x%v)", abfd, section, offset); 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; case 'l': if (*fmt == 'd') { fprintf (fp, "%ld", va_arg (arg, long)); ++fmt; break; } else if (*fmt == 'u') { fprintf (fp, "%lu", va_arg (arg, unsigned long)); ++fmt; break; } /* Fall thru */ default: fprintf (fp, "%%%c", fmt[-1]); break; } } } if (is_warning && config.fatal_warnings) config.make_executable = FALSE; if (fatal) xexit (1); } /* 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, FALSE); 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, TRUE); 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, ...) { if (config.map_file != NULL) { va_list arg; va_start (arg, fmt); vfinfo (config.map_file, fmt, arg, FALSE); va_end (arg); } } void lfinfo (FILE *file, const char *fmt, ...) { va_list arg; va_start (arg, fmt); vfinfo (file, fmt, arg, FALSE); 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); }