97d40d3d4a
us up to version 2.17.50.20070703, at the last GPLv2 commit. Amongst others, this added upstream support for some FreeBSD-specific things that we previously had to manually hack in, such as the OSABI label support, and so on. There are also quite a number of new files, some for cpu's (e.g. SPU) that we may or may not be interested in, but those can be cleaned up later on, if needed.
529 lines
12 KiB
C
529 lines
12 KiB
C
/* ldmisc.c
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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2001, 2002, 2003, 2004, 2005, 2006, 2007
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Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libiberty.h"
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#include "demangle.h"
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#include <stdarg.h>
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#include "ld.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include <ldgram.h>
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#include "ldlex.h"
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#include "ldmain.h"
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#include "ldfile.h"
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#include "elf-bfd.h"
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/*
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%% literal %
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%A section name from a section
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%B filename from a bfd
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%C clever filename:linenumber with function
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%D like %C, but no function name
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%E current bfd error or errno
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%F error is fatal
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%G like %D, but only function name
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%I filename from a lang_input_statement_type
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%P print program name
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%R info about a relent
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%S print script file and linenumber
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%T symbol name
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%V hex bfd_vma
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%W hex bfd_vma with 0x with no leading zeros taking up 8 spaces
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%X no object output, fail return
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%d integer, like printf
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%ld long, like printf
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%lu unsigned long, like printf
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%s arbitrary string, like printf
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%u integer, like printf
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%v hex bfd_vma, no leading zeros
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*/
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static void
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vfinfo (FILE *fp, const char *fmt, va_list arg, bfd_boolean is_warning)
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{
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bfd_boolean fatal = FALSE;
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while (*fmt != '\0')
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{
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while (*fmt != '%' && *fmt != '\0')
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{
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putc (*fmt, fp);
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fmt++;
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}
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if (*fmt == '%')
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{
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fmt++;
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switch (*fmt++)
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{
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case '%':
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/* literal % */
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putc ('%', fp);
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break;
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case 'X':
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/* no object output, fail return */
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config.make_executable = FALSE;
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break;
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case 'V':
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/* hex bfd_vma */
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{
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bfd_vma value = va_arg (arg, bfd_vma);
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fprintf_vma (fp, value);
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}
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break;
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case 'v':
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/* hex bfd_vma, no leading zeros */
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{
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char buf[100];
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char *p = buf;
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bfd_vma value = va_arg (arg, bfd_vma);
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sprintf_vma (p, value);
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while (*p == '0')
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p++;
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if (!*p)
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p--;
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fputs (p, fp);
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}
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break;
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case 'W':
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/* hex bfd_vma with 0x with no leading zeroes taking up
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8 spaces. */
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{
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char buf[100];
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bfd_vma value;
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char *p;
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int len;
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value = va_arg (arg, bfd_vma);
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sprintf_vma (buf, value);
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for (p = buf; *p == '0'; ++p)
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;
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if (*p == '\0')
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--p;
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len = strlen (p);
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while (len < 8)
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{
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putc (' ', fp);
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++len;
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}
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fprintf (fp, "0x%s", p);
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}
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break;
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case 'T':
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/* Symbol name. */
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{
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const char *name = va_arg (arg, const char *);
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if (name == NULL || *name == 0)
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{
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fprintf (fp, _("no symbol"));
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break;
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}
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else if (demangling)
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{
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char *demangled;
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demangled = bfd_demangle (output_bfd, name,
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DMGL_ANSI | DMGL_PARAMS);
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if (demangled != NULL)
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{
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fprintf (fp, "%s", demangled);
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free (demangled);
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break;
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}
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}
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fprintf (fp, "%s", name);
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}
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break;
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case 'A':
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/* section name from a section */
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{
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asection *sec = va_arg (arg, asection *);
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bfd *abfd = sec->owner;
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const char *group = NULL;
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struct coff_comdat_info *ci;
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fprintf (fp, "%s", sec->name);
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if (abfd != NULL
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&& bfd_get_flavour (abfd) == bfd_target_elf_flavour
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&& elf_next_in_group (sec) != NULL
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&& (sec->flags & SEC_GROUP) == 0)
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group = elf_group_name (sec);
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else if (abfd != NULL
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&& bfd_get_flavour (abfd) == bfd_target_coff_flavour
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&& (ci = bfd_coff_get_comdat_section (sec->owner,
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sec)) != NULL)
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group = ci->name;
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if (group != NULL)
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fprintf (fp, "[%s]", group);
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}
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break;
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case 'B':
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/* filename from a bfd */
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{
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bfd *abfd = va_arg (arg, bfd *);
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if (abfd == NULL)
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fprintf (fp, "%s generated", program_name);
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else if (abfd->my_archive)
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fprintf (fp, "%s(%s)", abfd->my_archive->filename,
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abfd->filename);
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else
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fprintf (fp, "%s", abfd->filename);
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}
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break;
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case 'F':
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/* Error is fatal. */
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fatal = TRUE;
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break;
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case 'P':
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/* Print program name. */
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fprintf (fp, "%s", program_name);
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break;
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case 'E':
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/* current bfd error or errno */
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fprintf (fp, "%s", bfd_errmsg (bfd_get_error ()));
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break;
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case 'I':
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/* filename from a lang_input_statement_type */
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{
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lang_input_statement_type *i;
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i = va_arg (arg, lang_input_statement_type *);
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if (bfd_my_archive (i->the_bfd) != NULL)
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fprintf (fp, "(%s)",
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bfd_get_filename (bfd_my_archive (i->the_bfd)));
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fprintf (fp, "%s", i->local_sym_name);
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if (bfd_my_archive (i->the_bfd) == NULL
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&& strcmp (i->local_sym_name, i->filename) != 0)
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fprintf (fp, " (%s)", i->filename);
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}
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break;
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case 'S':
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/* Print script file and linenumber. */
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if (parsing_defsym)
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fprintf (fp, "--defsym %s", lex_string);
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else if (ldfile_input_filename != NULL)
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fprintf (fp, "%s:%u", ldfile_input_filename, lineno);
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else
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fprintf (fp, _("built in linker script:%u"), lineno);
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break;
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case 'R':
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/* Print all that's interesting about a relent. */
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{
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arelent *relent = va_arg (arg, arelent *);
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lfinfo (fp, "%s+0x%v (type %s)",
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(*(relent->sym_ptr_ptr))->name,
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relent->addend,
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relent->howto->name);
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}
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break;
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case 'C':
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case 'D':
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case 'G':
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/* Clever filename:linenumber with function name if possible.
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The arguments are a BFD, a section, and an offset. */
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{
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static bfd *last_bfd;
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static char *last_file = NULL;
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static char *last_function = NULL;
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bfd *abfd;
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asection *section;
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bfd_vma offset;
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lang_input_statement_type *entry;
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asymbol **asymbols;
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const char *filename;
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const char *functionname;
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unsigned int linenumber;
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bfd_boolean discard_last;
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abfd = va_arg (arg, bfd *);
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section = va_arg (arg, asection *);
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offset = va_arg (arg, bfd_vma);
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if (abfd == NULL)
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{
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entry = NULL;
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asymbols = NULL;
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}
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else
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{
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entry = (lang_input_statement_type *) abfd->usrdata;
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if (entry != (lang_input_statement_type *) NULL
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&& entry->asymbols != (asymbol **) NULL)
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asymbols = entry->asymbols;
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else
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{
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long symsize;
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long sym_count;
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symsize = bfd_get_symtab_upper_bound (abfd);
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if (symsize < 0)
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einfo (_("%B%F: could not read symbols\n"), abfd);
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asymbols = xmalloc (symsize);
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sym_count = bfd_canonicalize_symtab (abfd, asymbols);
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if (sym_count < 0)
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einfo (_("%B%F: could not read symbols\n"), abfd);
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if (entry != (lang_input_statement_type *) NULL)
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{
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entry->asymbols = asymbols;
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entry->symbol_count = sym_count;
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}
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}
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}
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/* The GNU Coding Standard requires that error messages
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be of the form:
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source-file-name:lineno: message
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We do not always have a line number available so if
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we cannot find them we print out the section name and
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offset instread. */
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discard_last = TRUE;
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if (abfd != NULL
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&& bfd_find_nearest_line (abfd, section, asymbols, offset,
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&filename, &functionname,
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&linenumber))
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{
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if (functionname != NULL && fmt[-1] == 'C')
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{
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/* Detect the case where we are printing out a
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message for the same function as the last
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call to vinfo ("%C"). In this situation do
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not print out the ABFD filename or the
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function name again. Note - we do still
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print out the source filename, as this will
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allow programs that parse the linker's output
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(eg emacs) to correctly locate multiple
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errors in the same source file. */
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if (last_bfd == NULL
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|| last_file == NULL
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|| last_function == NULL
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|| last_bfd != abfd
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|| (filename != NULL
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&& strcmp (last_file, filename) != 0)
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|| strcmp (last_function, functionname) != 0)
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{
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lfinfo (fp, _("%B: In function `%T':\n"),
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abfd, functionname);
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last_bfd = abfd;
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if (last_file != NULL)
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free (last_file);
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last_file = NULL;
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if (filename)
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last_file = xstrdup (filename);
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if (last_function != NULL)
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free (last_function);
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last_function = xstrdup (functionname);
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}
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discard_last = FALSE;
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}
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else
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lfinfo (fp, "%B:", abfd);
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if (filename != NULL)
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fprintf (fp, "%s:", filename);
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if (functionname != NULL && fmt[-1] == 'G')
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lfinfo (fp, "%T", functionname);
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else if (filename != NULL && linenumber != 0)
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fprintf (fp, "%u", linenumber);
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else
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lfinfo (fp, "(%A+0x%v)", section, offset);
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}
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else
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lfinfo (fp, "%B:(%A+0x%v)", abfd, section, offset);
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if (asymbols != NULL && entry == NULL)
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free (asymbols);
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if (discard_last)
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{
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last_bfd = NULL;
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if (last_file != NULL)
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{
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free (last_file);
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last_file = NULL;
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}
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if (last_function != NULL)
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{
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free (last_function);
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last_function = NULL;
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}
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}
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}
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break;
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case 's':
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/* arbitrary string, like printf */
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fprintf (fp, "%s", va_arg (arg, char *));
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break;
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case 'd':
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/* integer, like printf */
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fprintf (fp, "%d", va_arg (arg, int));
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break;
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case 'u':
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/* unsigned integer, like printf */
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fprintf (fp, "%u", va_arg (arg, unsigned int));
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break;
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case 'l':
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if (*fmt == 'd')
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{
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fprintf (fp, "%ld", va_arg (arg, long));
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++fmt;
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break;
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}
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else if (*fmt == 'u')
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{
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fprintf (fp, "%lu", va_arg (arg, unsigned long));
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++fmt;
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break;
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}
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/* Fall thru */
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default:
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fprintf (fp, "%%%c", fmt[-1]);
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break;
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}
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}
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}
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if (is_warning && config.fatal_warnings)
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config.make_executable = FALSE;
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if (fatal)
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xexit (1);
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}
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/* Format info message and print on stdout. */
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/* (You would think this should be called just "info", but then you
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would be hosed by LynxOS, which defines that name in its libc.) */
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void
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info_msg (const char *fmt, ...)
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{
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va_list arg;
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va_start (arg, fmt);
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vfinfo (stdout, fmt, arg, FALSE);
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va_end (arg);
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}
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/* ('e' for error.) Format info message and print on stderr. */
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void
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einfo (const char *fmt, ...)
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{
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va_list arg;
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va_start (arg, fmt);
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vfinfo (stderr, fmt, arg, TRUE);
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va_end (arg);
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}
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void
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info_assert (const char *file, unsigned int line)
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{
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einfo (_("%F%P: internal error %s %d\n"), file, line);
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}
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/* ('m' for map) Format info message and print on map. */
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void
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minfo (const char *fmt, ...)
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{
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if (config.map_file != NULL)
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{
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va_list arg;
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va_start (arg, fmt);
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vfinfo (config.map_file, fmt, arg, FALSE);
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va_end (arg);
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}
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}
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void
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lfinfo (FILE *file, const char *fmt, ...)
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{
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va_list arg;
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va_start (arg, fmt);
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vfinfo (file, fmt, arg, FALSE);
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va_end (arg);
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}
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/* Functions to print the link map. */
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void
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print_space (void)
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{
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fprintf (config.map_file, " ");
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}
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void
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print_nl (void)
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{
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fprintf (config.map_file, "\n");
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}
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/* A more or less friendly abort message. In ld.h abort is defined to
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call this function. */
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void
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ld_abort (const char *file, int line, const char *fn)
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{
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if (fn != NULL)
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einfo (_("%P: internal error: aborting at %s line %d in %s\n"),
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file, line, fn);
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else
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einfo (_("%P: internal error: aborting at %s line %d\n"),
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file, line);
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einfo (_("%P%F: please report this bug\n"));
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xexit (1);
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}
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