421 lines
8.8 KiB
C
421 lines
8.8 KiB
C
/* ldmisc.c
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Copyright (C) 1991, 92, 93, 94 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
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include <varargs.h>
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#include <demangle.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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/* VARARGS*/
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static void finfo ();
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static const char *demangle PARAMS ((const char *string,
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int remove_underscore));
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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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%C clever filename:linenumber with function
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%D like %C, but no 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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*/
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static const char *
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demangle (string, remove_underscore)
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const char *string;
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int remove_underscore;
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{
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const char *res;
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if (remove_underscore && output_bfd)
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{
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if (bfd_get_symbol_leading_char (output_bfd) == string[0])
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string++;
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}
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/* Note that there's a memory leak here, we keep buying memory
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for demangled names, and never free. But if you have so many
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errors that you run out of VM with the error messages, then
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there's something up */
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res = cplus_demangle (string, DMGL_ANSI|DMGL_PARAMS);
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return res ? res : string;
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}
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static void
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vfinfo(fp, fmt, arg)
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FILE *fp;
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char *fmt;
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va_list arg;
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{
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boolean fatal = false;
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while (*fmt)
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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 '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 != (const char *) NULL)
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fprintf (fp, "%s", demangle (name, 1));
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else
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fprintf (fp, "no symbol");
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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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}
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else {
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fprintf(fp,"%s", abfd->filename);
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}
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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, 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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va_arg(arg,lang_input_statement_type *);
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if (i->the_bfd->my_archive)
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fprintf(fp, "(%s)", i->the_bfd->my_archive->filename);
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fprintf(fp,"%s", i->local_sym_name);
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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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{
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if (ldfile_input_filename) {
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fprintf(fp,"%s:%u", ldfile_input_filename, lineno );
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}
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}
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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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finfo (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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/* Clever filename:linenumber with function name if possible,
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or section name as a last resort. The arguments are a BFD,
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a section, and an offset. */
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{
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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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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", abfd);
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asymbols = (asymbol **) 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", 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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discard_last = true;
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if (bfd_find_nearest_line (abfd, section, asymbols, offset,
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&filename, &functionname, &linenumber))
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{
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if (filename == (char *) NULL)
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filename = abfd->filename;
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if (functionname != NULL && fmt[-1] == 'C')
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{
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if (last_file == NULL
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|| last_function == 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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fprintf (fp, "%s: In function `%s':\n", filename,
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demangle (functionname, 1));
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if (last_file != NULL)
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free (last_file);
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last_file = buystring (filename);
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if (last_function != NULL)
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free (last_function);
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last_function = buystring (functionname);
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}
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discard_last = false;
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fprintf (fp, "%s:%u", filename, linenumber);
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}
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else if (linenumber != 0)
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fprintf (fp, "%s:%u", filename, linenumber);
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else
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finfo (fp, "%s(%s+0x%v)", filename, section->name, offset);
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}
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else
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finfo (fp, "%s(%s+0x%v)", abfd->filename, section->name, offset);
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if (discard_last)
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{
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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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}
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}
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}
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if (fatal == true)
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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 would
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hosed by LynxOS, which defines that name in its libc.) */
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void info_msg(va_alist)
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va_dcl
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{
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char *fmt;
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va_list arg;
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va_start(arg);
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fmt = va_arg(arg, char *);
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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 einfo(va_alist)
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va_dcl
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{
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char *fmt;
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va_list arg;
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va_start(arg);
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fmt = va_arg(arg, char *);
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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(file, line)
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char *file;
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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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char *
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buystring (x)
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CONST char *CONST x;
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{
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size_t l = strlen(x)+1;
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char *r = xmalloc(l);
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memcpy(r, x,l);
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return r;
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}
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/* ('m' for map) Format info message and print on map. */
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void minfo(va_alist)
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va_dcl
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{
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char *fmt;
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va_list arg;
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va_start(arg);
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fmt = va_arg(arg, char *);
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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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static void
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finfo (va_alist)
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va_dcl
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{
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char *fmt;
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FILE *file;
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va_list arg;
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va_start (arg);
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file = va_arg (arg, FILE *);
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fmt = va_arg (arg, char *);
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vfinfo (file, fmt, arg);
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va_end (arg);
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}
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/*----------------------------------------------------------------------
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Functions to print the link map
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*/
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void
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print_space ()
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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 ()
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{
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fprintf(config.map_file, "\n");
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}
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void
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print_address (value)
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bfd_vma value;
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{
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fprintf_vma(config.map_file, value);
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}
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