561 lines
13 KiB
C
561 lines
13 KiB
C
/* ldmisc.c
|
||
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
|
||
2001, 2002, 2003, 2004, 2005, 2006
|
||
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, 51 Franklin Street - Fifth Floor, Boston, MA
|
||
02110-1301, 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"
|
||
#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"));
|
||
else if (! demangling)
|
||
fprintf (fp, "%s", name);
|
||
else
|
||
{
|
||
char *demangled;
|
||
|
||
demangled = demangle (name);
|
||
fprintf (fp, "%s", demangled);
|
||
free (demangled);
|
||
}
|
||
}
|
||
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;
|
||
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);
|
||
|
||
if (abfd == NULL)
|
||
{
|
||
entry = NULL;
|
||
asymbols = NULL;
|
||
}
|
||
else
|
||
{
|
||
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 sym_count;
|
||
|
||
symsize = bfd_get_symtab_upper_bound (abfd);
|
||
if (symsize < 0)
|
||
einfo (_("%B%F: could not read symbols\n"), abfd);
|
||
asymbols = xmalloc (symsize);
|
||
sym_count = bfd_canonicalize_symtab (abfd, asymbols);
|
||
if (sym_count < 0)
|
||
einfo (_("%B%F: could not read symbols\n"), abfd);
|
||
if (entry != (lang_input_statement_type *) NULL)
|
||
{
|
||
entry->asymbols = asymbols;
|
||
entry->symbol_count = sym_count;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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 (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;
|
||
|
||
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);
|
||
}
|
||
|
||
/* 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, 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, ...)
|
||
{
|
||
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);
|
||
}
|