Add support for WinCE based toolchains.
[deliverable/binutils-gdb.git] / ld / ldexp.c
index 0581517930b119837603d584e5ea04d7e91cc437..0c38314ffa4399d41917de861e5fc60a3edf94f0 100644 (file)
@@ -1,6 +1,7 @@
 /* This module handles expression trees.
-Copyright (C) 1991, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
-Written by Steve Chamberlain of Cygnus Support (sac@cygnus.com).
+   Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
+   Free Software Foundation, Inc.
+   Written by Steve Chamberlain of Cygnus Support (sac@cygnus.com).
 
 This file is part of GLD, the Gnu Linker.
 
@@ -15,8 +16,9 @@ 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+along with GLD; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
 
 /*
 This module is in charge of working out the contents of expressions.
@@ -106,6 +108,7 @@ exp_print_token (code)
        { SEARCH_DIR,"SEARCH_DIR" },
        { MAP,"MAP" },
        { QUAD,"QUAD" },
+       { SQUAD,"SQUAD" },
        { LONG,"LONG" },
        { SHORT,"SHORT" },
        { BYTE,"BYTE" },
@@ -138,7 +141,7 @@ new_abs (value)
      bfd_vma value;
 {
   etree_value_type new;
-  new.valid = true;
+  new.valid_p = true;
   new.section = abs_output_section;
   new.value = value;
   return new;
@@ -151,9 +154,9 @@ check (os, name, op)
      const char *op;
 {
   if (os == NULL)
-    einfo ("%F%P: %s uses undefined section %s\n", op, name);
+    einfo (_("%F%P: %s uses undefined section %s\n"), op, name);
   if (! os->processed)
-    einfo ("%F%P: %s forward reference of section %s\n", op, name);
+    einfo (_("%F%P: %s forward reference of section %s\n"), op, name);
 }
 
 etree_type *
@@ -189,7 +192,7 @@ new_rel (value, section)
      lang_output_section_statement_type *section;
 {
   etree_value_type new;
-  new.valid = true;
+  new.valid_p = true;
   new.value = value;
   new.section = section;
   return new;
@@ -201,7 +204,7 @@ new_rel_from_section (value, section)
      lang_output_section_statement_type *section;
 {
   etree_value_type new;
-  new.valid = true;
+  new.valid_p = true;
   new.value = value;
   new.section = section;
 
@@ -222,14 +225,14 @@ fold_binary (tree, current_section, allocation_done, dot, dotp)
 
   result = exp_fold_tree (tree->binary.lhs, current_section,
                          allocation_done, dot, dotp);
-  if (result.valid)
+  if (result.valid_p)
     {
       etree_value_type other;
 
       other = exp_fold_tree (tree->binary.rhs,
                             current_section,
                             allocation_done, dot,dotp) ;
-      if (other.valid)
+      if (other.valid_p)
        {
          /* If the values are from different sections, or this is an
             absolute expression, make both the source arguments
@@ -265,14 +268,14 @@ fold_binary (tree, current_section, allocation_done, dot, dotp)
            {
            case '%':
              if (other.value == 0)
-               einfo ("%F%S %% by zero\n");
+               einfo (_("%F%S %% by zero\n"));
              result.value = ((bfd_signed_vma) result.value
                              % (bfd_signed_vma) other.value);
              break;
 
            case '/':
              if (other.value == 0)
-               einfo ("%F%S / by zero\n");
+               einfo (_("%F%S / by zero\n"));
              result.value = ((bfd_signed_vma) result.value
                              / (bfd_signed_vma) other.value);
              break;
@@ -295,13 +298,23 @@ fold_binary (tree, current_section, allocation_done, dot, dotp)
              BOP(ANDAND,&&);
              BOP(OROR,||);
 
+           case MAX_K:
+             if (result.value < other.value)
+               result = other;
+             break;
+
+           case MIN_K:
+             if (result.value > other.value)
+               result = other;
+             break;
+
            default:
              FAIL();
            }
        }
       else
        {
-         result.valid = false;
+         result.valid_p = false;
        }
     }
 
@@ -312,7 +325,7 @@ etree_value_type
 invalid ()
 {
   etree_value_type new;
-  new.valid = false;
+  new.valid_p = false;
   return new;
 }
 
@@ -335,12 +348,12 @@ fold_name (tree, current_section, allocation_done, dot)
          }
        else
          {
-           result.valid = false;
+           result.valid_p = false;
          }
        break;
       case DEFINED:
        if (allocation_done == lang_first_phase_enum)
-         result.valid = false;
+         result.valid_p = false;
        else
          {
            struct bfd_link_hash_entry *h;
@@ -353,11 +366,11 @@ fold_name (tree, current_section, allocation_done, dot)
                                || h->type == bfd_link_hash_defweak
                                || h->type == bfd_link_hash_common));
            result.section = 0;
-           result.valid = true;
+           result.valid_p = true;
          }
        break;
       case NAME:
-       result.valid = false;
+       result.valid_p = false;
        if (tree->name.name[0] == '.' && tree->name.name[1] == 0)
          {
            if (allocation_done != lang_first_phase_enum)
@@ -381,20 +394,30 @@ fold_name (tree, current_section, allocation_done, dot)
                else if (allocation_done == lang_final_phase_enum
                         || allocation_done == lang_allocating_phase_enum)
                  {
-                   lang_output_section_statement_type *os;
-               
-                   os = (lang_output_section_statement_lookup
-                         (h->u.def.section->output_section->name));
-
-                   /* FIXME: Is this correct if this section is being
-                      linked with -R?  */
-                   result = new_rel ((h->u.def.value
-                                      + h->u.def.section->output_offset),
-                                     os);
+                   asection *output_section;
+
+                   output_section = h->u.def.section->output_section;
+                   if (output_section == NULL)
+                     einfo (_("%X%S: unresolvable symbol `%s' referenced in expression\n"),
+                            tree->name.name);
+                   else
+                     {
+                       lang_output_section_statement_type *os;
+
+                       os = (lang_output_section_statement_lookup
+                             (bfd_get_section_name (output_bfd,
+                                                    output_section)));
+
+                       /* FIXME: Is this correct if this section is
+                          being linked with -R?  */
+                       result = new_rel ((h->u.def.value
+                                          + h->u.def.section->output_offset),
+                                         os);
+                     }
                  }
              }
            else if (allocation_done == lang_final_phase_enum)
-             einfo ("%F%S: undefined symbol `%s' referenced in expression\n",
+             einfo (_("%F%S: undefined symbol `%s' referenced in expression\n"),
                     tree->name.name);
          }
        break;
@@ -433,11 +456,12 @@ fold_name (tree, current_section, allocation_done, dot)
       case SIZEOF:
        if (allocation_done != lang_first_phase_enum)
          {
+            int opb = bfd_octets_per_byte (output_bfd);
            lang_output_section_statement_type *os;
 
            os = lang_output_section_find (tree->name.name);
            check (os, tree->name.name, "SIZEOF");
-           result = new_abs (os->bfd_section->_raw_size);
+           result = new_abs (os->bfd_section->_raw_size / opb);
          }
        else
          result = invalid ();
@@ -462,7 +486,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
 
   if (tree == NULL)
     {
-      result.valid = false;
+      result.valid_p = false;
       return result;
     }
 
@@ -474,7 +498,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
 
     case etree_rel:
       if (allocation_done != lang_final_phase_enum)
-       result.valid = false;
+       result.valid_p = false;
       else
        result = new_rel ((tree->rel.value
                           + tree->rel.section->output_section->vma
@@ -482,11 +506,23 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
                          current_section);
       break;
 
+    case etree_assert:
+      result = exp_fold_tree (tree->assert_s.child,
+                              current_section,
+                              allocation_done, dot, dotp);
+      if (result.valid_p)
+       {
+         if (! result.value)
+           einfo ("%F%P: %s\n", tree->assert_s.message);
+         return result;
+       }
+      break;
+
     case etree_unary:
       result = exp_fold_tree (tree->unary.child,
                              current_section,
                              allocation_done, dot, dotp);
-      if (result.valid)
+      if (result.valid_p)
        {
          switch (tree->type.node_code) 
            {
@@ -495,17 +531,17 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
                result = new_rel_from_section (ALIGN_N (dot, result.value),
                                               current_section);
              else
-               result.valid = false;
+               result.valid_p = false;
              break;
 
            case ABSOLUTE:
-             if (allocation_done != lang_first_phase_enum && result.valid)
+             if (allocation_done != lang_first_phase_enum && result.valid_p)
                {
                  result.value += result.section->bfd_section->vma;
                  result.section = abs_output_section;
                }
              else 
-               result.valid = false;
+               result.valid_p = false;
              break;
 
            case '~':
@@ -531,7 +567,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
                  result.value = ALIGN_N (dot, result.value);
                }
              else
-               result.valid = false;
+               result.valid_p = false;
              break;
 
            default:
@@ -544,7 +580,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
     case etree_trinary:
       result = exp_fold_tree (tree->trinary.cond, current_section,
                              allocation_done, dot, dotp);
-      if (result.valid)
+      if (result.valid_p)
        result = exp_fold_tree ((result.value
                                 ? tree->trinary.lhs
                                 : tree->trinary.rhs),
@@ -563,7 +599,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
        {
          /* Assignment to dot can only be done during allocation */
          if (tree->type.node_class == etree_provide)
-           einfo ("%F%S can not PROVIDE assignment to location counter\n");
+           einfo (_("%F%S can not PROVIDE assignment to location counter\n"));
          if (allocation_done == lang_allocating_phase_enum
              || (allocation_done == lang_final_phase_enum
                  && current_section == abs_output_section))
@@ -572,12 +608,12 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
                                      current_section,
                                      lang_allocating_phase_enum, dot,
                                      dotp);
-             if (! result.valid)
-               einfo ("%F%S invalid assignment to location counter\n");
+             if (! result.valid_p)
+               einfo (_("%F%S invalid assignment to location counter\n"));
              else
                {
                  if (current_section == NULL)
-                   einfo ("%F%S assignment to location counter invalid outside of SECTION\n");
+                   einfo (_("%F%S assignment to location counter invalid outside of SECTION\n"));
                  else
                    {
                      bfd_vma nextdot;
@@ -587,7 +623,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
                      if (nextdot < dot
                          && current_section != abs_output_section)
                        {
-                         einfo ("%F%S cannot move location counter backwards (from %V to %V)\n",
+                         einfo (_("%F%S cannot move location counter backwards (from %V to %V)\n"),
                                 dot, nextdot);
                        }
                      else
@@ -601,7 +637,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
          result = exp_fold_tree (tree->assign.src,
                                  current_section, allocation_done,
                                  dot, dotp);
-         if (result.valid)
+         if (result.valid_p)
            {
              boolean create;
              struct bfd_link_hash_entry *h;
@@ -615,7 +651,7 @@ exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
              if (h == (struct bfd_link_hash_entry *) NULL)
                {
                  if (tree->type.node_class == etree_assign)
-                   einfo ("%P%F:%s: hash creation failed\n",
+                   einfo (_("%P%F:%s: hash creation failed\n"),
                           tree->assign.dst);
                }
              else if (tree->type.node_class == etree_provide
@@ -675,7 +711,7 @@ exp_binop (code, lhs, rhs)
   r = exp_fold_tree_no_dot(&value,
                           abs_output_section,
                           lang_first_phase_enum );
-  if (r.valid)
+  if (r.valid_p)
     {
       return exp_intop(r.value);
     }
@@ -700,7 +736,7 @@ exp_trinop (code, cond, lhs, rhs)
   value.type.node_class = etree_trinary;
   r= exp_fold_tree_no_dot(&value,  (lang_output_section_statement_type
                                    *)NULL,lang_first_phase_enum);
-  if (r.valid) {
+  if (r.valid_p) {
     return exp_intop(r.value);
   }
   new = (etree_type *) stat_alloc (sizeof (new->trinary));
@@ -722,7 +758,7 @@ exp_unop (code, child)
   value.unary.type.node_class = etree_unary;
   r = exp_fold_tree_no_dot(&value,abs_output_section,
                           lang_first_phase_enum);
-  if (r.valid) {
+  if (r.valid_p) {
     return exp_intop(r.value);
   }
   new = (etree_type *) stat_alloc (sizeof (new->unary));
@@ -746,7 +782,7 @@ exp_nameop (code, name)
   r = exp_fold_tree_no_dot(&value,
                           (lang_output_section_statement_type *)NULL,
                           lang_first_phase_enum);
-  if (r.valid) {
+  if (r.valid_p) {
     return exp_intop(r.value);
   }
   new = (etree_type *) stat_alloc (sizeof (new->name));
@@ -800,6 +836,23 @@ exp_provide (dst, src)
   return n;
 }
 
+/* Handle ASSERT.  */
+
+etree_type *
+exp_assert (exp, message)
+     etree_type *exp;
+     const char *message;
+{
+  etree_type *n;
+
+  n = (etree_type *) stat_alloc (sizeof (n->assert_s));
+  n->assert_s.type.node_code = '!';
+  n->assert_s.type.node_class = etree_assert;
+  n->assert_s.child = exp;
+  n->assert_s.message = message;
+  return n;
+}
+
 void 
 exp_print_tree (tree)
      etree_type *tree;
@@ -850,13 +903,19 @@ exp_print_tree (tree)
     exp_print_token(tree->unary.type.node_code);
     if (tree->unary.child) 
     {
-      
     fprintf(config.map_file,"(");
     exp_print_tree(tree->unary.child);
     fprintf(config.map_file,")");
   }
     
     break;
+
+  case etree_assert:
+    fprintf (config.map_file, "ASSERT (");
+    exp_print_tree (tree->assert_s.child);
+    fprintf (config.map_file, ", %s)", tree->assert_s.message);
+    break;
+
   case etree_undef:
     fprintf(config.map_file,"????????");
     break;
@@ -888,8 +947,8 @@ exp_get_vma (tree, def, name, allocation_done)
   if (tree != NULL)
     {
       r = exp_fold_tree_no_dot (tree, abs_output_section, allocation_done);
-      if (! r.valid && name != NULL)
-       einfo ("%F%S nonconstant expression for %s\n", name);
+      if (! r.valid_p && name != NULL)
+       einfo (_("%F%S nonconstant expression for %s\n"), name);
       return r.value;
     }
   else
@@ -910,19 +969,19 @@ exp_get_value_int (tree,def,name, allocation_done)
 bfd_vma
 exp_get_abs_int (tree, def, name, allocation_done)
      etree_type *tree;
-     int def;
+     int def ATTRIBUTE_UNUSED;
      char *name;
      lang_phase_type allocation_done;
 {
   etree_value_type res;
   res = exp_fold_tree_no_dot (tree, abs_output_section, allocation_done);
 
-  if (res.valid)
+  if (res.valid_p)
     {
       res.value += res.section->bfd_section->vma;
     }
   else {
-    einfo ("%F%S non constant expression for %s\n",name);
+    einfo (_("%F%S non constant expression for %s\n"),name);
   }
   return res.value;
 }
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