553 lines
12 KiB
C
553 lines
12 KiB
C
/* ldmisc.c
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2002, 2003
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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, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include "bfd.h"
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#include "bfdlink.h"
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#include "sysdep.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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/*
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%% literal %
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%F error is fatal
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%P print program name
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%S print script file and linenumber
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%E current bfd error or errno
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%I filename from a lang_input_statement_type
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%B filename from a bfd
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%T symbol name
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%X no object output, fail return
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%V hex bfd_vma
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%v hex bfd_vma, no leading zeros
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%W hex bfd_vma with 0x with no leading zeros taking up 8 spaces
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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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%G like %D, but only function name
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%R info about a relent
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%s arbitrary string, like printf
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%d integer, like printf
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%u integer, like printf
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*/
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static void
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vfinfo (FILE *fp, const char *fmt, va_list arg)
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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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default:
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fprintf (fp, "%%%c", fmt[-1]);
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break;
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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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fprintf (fp, _("no symbol"));
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else if (! demangling)
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fprintf (fp, "%s", name);
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else
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{
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char *demangled;
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demangled = demangle (name);
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fprintf (fp, "%s", demangled);
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free (demangled);
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}
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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->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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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 symbol_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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symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
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if (symbol_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 = symbol_count;
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}
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}
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lfinfo (fp, "%B(%s+0x%v)", abfd, section->name, offset);
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discard_last = TRUE;
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if (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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bfd_boolean need_colon = TRUE;
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if (functionname != NULL && fmt[-1] == 'C')
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{
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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, _(": In function `%T':\n"),
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functionname);
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need_colon = FALSE;
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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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if (filename != NULL)
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{
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if (need_colon)
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putc (':', fp);
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fputs (filename, fp);
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}
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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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}
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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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}
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}
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}
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if (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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/* Wrapper around cplus_demangle. Strips leading underscores and
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other such chars that would otherwise confuse the demangler. */
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char *
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demangle (const char *name)
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{
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char *res;
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const char *p;
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if (output_bfd != NULL
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&& bfd_get_symbol_leading_char (output_bfd) == name[0])
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++name;
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/* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
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or the MS PE format. These formats have a number of leading '.'s
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on at least some symbols, so we remove all dots to avoid
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confusing the demangler. */
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p = name;
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while (*p == '.')
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++p;
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res = cplus_demangle (p, DMGL_ANSI | DMGL_PARAMS);
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if (res)
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{
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size_t dots = p - name;
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/* Now put back any stripped dots. */
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if (dots != 0)
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{
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size_t len = strlen (res) + 1;
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char *add_dots = xmalloc (len + dots);
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memcpy (add_dots, name, dots);
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memcpy (add_dots + dots, res, len);
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free (res);
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res = add_dots;
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}
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return res;
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}
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return xstrdup (name);
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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);
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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);
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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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va_list arg;
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va_start (arg, fmt);
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vfinfo (config.map_file, fmt, arg);
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va_end (arg);
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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);
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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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bfd_boolean
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error_handler (int id, 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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switch (id)
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{
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default:
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break;
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/* We can be called with
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error_handler (-LD_DEFINITION_IN_DISCARDED_SECTION, "", 0);
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to make this error non-fatal and
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error_handler (-LD_DEFINITION_IN_DISCARDED_SECTION, "", 1);
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to make this error fatal. */
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case -LD_DEFINITION_IN_DISCARDED_SECTION:
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case LD_DEFINITION_IN_DISCARDED_SECTION:
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{
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static struct bfd_hash_table *hash;
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static int fatal = 1;
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const char *name;
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if (id == -LD_DEFINITION_IN_DISCARDED_SECTION)
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{
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fatal = va_arg (arg, int);
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goto out;
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}
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name = va_arg (arg, const char *);
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/* Only warn once about a particular undefined symbol. */
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if (hash == NULL)
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{
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hash = xmalloc (sizeof (struct bfd_hash_table));
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if (! bfd_hash_table_init (hash, bfd_hash_newfunc))
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einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
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}
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if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL)
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goto out;
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if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL)
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einfo (_("%F%P: bfd_hash_lookup failed: %E\n"));
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if (fatal)
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config.make_executable = FALSE;
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}
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break;
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}
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vfinfo (stderr, fmt, arg);
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out:
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va_end (arg);
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return TRUE;
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}
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