ld/ldwarn.c

   1 /*
   2    Copyright (C) 1991 Free Software Foundation, Inc.
   3    Written by Steve Chamberlain of Cygnus Support.
   4
   5 This file is part of GLD, the GNU linker.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "ldsym.h"
  24 #include "ldwarn.h"
  25 #include "ldmisc.h"
  26
  27 /* we keep all the warning symbols in a list, if we ever get a
  28    warning, we'll search it the hard way. This won't be to bad since
  29    warnings are infrequent, and never that many (true or false ?).
  30
  31 */
  32
  33 typedef struct warning_list_struct {
  34   struct warning_list_struct *next;
  35   asymbol *sym;
  36 } warning_list_type;
  37
  38
  39 static warning_list_type *warning_list;
  40
  41
  42
  43 /* This is a warning symbol, add the error text to a list we keep, and mark
  44    the symbol referenced as requiring a warning */
  45
  46
  47 void
  48 add_warning (sym)
  49      asymbol *sym;
  50 {
  51   CONST    char *name = ((asymbol *)(sym->value))->name;
  52   warning_list_type *new;
  53
  54   ldsym_type *lookup = ldsym_get(name);
  55
  56   lookup->flags |= SYM_WARNING;
  57
  58   new = (warning_list_type *)ldmalloc(sizeof(warning_list_type));
  59   new->next = warning_list;
  60   new->sym  = sym;
  61   warning_list = new;
  62 }
  63
  64 /* run through the list we kept, and find the warning associated with
  65    this symbol */
  66 CONST char *
  67 fetch_warning (sym)
  68      asymbol *sym;
  69 {
  70   warning_list_type *ptr = warning_list;
  71   while (ptr != (warning_list_type *)NULL) {
  72     if (strcmp(((asymbol*)(ptr->sym->value))->name, sym->name) == 0) {
  73       return ptr->sym->name;
  74     }
  75     ptr = ptr->next;
  76   }
  77   return "This is a warning without a message !";
  78 }
  79
  80
  81 void
  82 produce_warnings (lgs, it)
  83      ldsym_type *lgs;
  84      asymbol *it;
  85 {
  86   asymbol **ptr;
  87   ptr  = lgs->srefs_chain;
  88   while (ptr != (asymbol **)NULL) {
  89     asymbol *ref = *ptr;
  90     info_msg ("%B: %s\n", bfd_asymbol_bfd(ref), fetch_warning(it));
  91     ptr = (asymbol **)(ref->udata);
  92   }
  93 }