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[deliverable/binutils-gdb.git] / gold / target-reloc.h
index d06dc82023bcd759328c4828fe46d5b8a17de5a2..d93e7552888bb71a432d7cc8324964e967354c45 100644 (file)
@@ -218,12 +218,14 @@ relocate_section(
           // If the local symbol belongs to a section we are discarding,
           // and that section is a debug section, try to find the
           // corresponding kept section and map this symbol to its
-          // counterpart in the kept section.
+          // counterpart in the kept section.  The symbol must not 
+          // correspond to a section we are folding.
          bool is_ordinary;
          unsigned int shndx = psymval->input_shndx(&is_ordinary);
          if (is_ordinary
              && shndx != elfcpp::SHN_UNDEF
-             && !object->is_section_included(shndx))
+             && !object->is_section_included(shndx) 
+              && !(relinfo->symtab->is_section_folded(object, shndx)))
            {
              if (comdat_behavior == CB_UNDETERMINED)
                {
@@ -268,8 +270,9 @@ relocate_section(
          psymval = &symval;
        }
 
-      if (!relocate.relocate(relinfo, target, i, reloc, r_type, sym, psymval,
-                            view + offset, view_address + offset, view_size))
+      if (!relocate.relocate(relinfo, target, output_section, i, reloc,
+                            r_type, sym, psymval, view + offset,
+                            view_address + offset, view_size))
        continue;
 
       if (offset < 0 || static_cast<section_size_type>(offset) >= view_size)
@@ -283,9 +286,10 @@ relocate_section(
       if (sym != NULL
          && sym->is_undefined()
          && sym->binding() != elfcpp::STB_WEAK
+          && !target->is_defined_by_abi(sym)
          && (!parameters->options().shared()       // -shared
               || parameters->options().defs()))     // -z defs
-       gold_undefined_symbol(sym, relinfo, i, offset);
+       gold_undefined_symbol_at_location(sym, relinfo, i, offset);
 
       if (sym != NULL && sym->has_warning())
        relinfo->symtab->issue_warning(sym, relinfo, i, offset);
@@ -307,8 +311,14 @@ class Default_scan_relocatable_relocs
   // Return the strategy to use for a local symbol which is not a
   // section symbol, given the relocation type.
   inline Relocatable_relocs::Reloc_strategy
-  local_non_section_strategy(unsigned int, Relobj*)
-  { return Relocatable_relocs::RELOC_COPY; }
+  local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym)
+  {
+    // We assume that relocation type 0 is NONE.  Targets which are
+    // different must override.
+    if (r_type == 0 && r_sym == 0)
+      return Relocatable_relocs::RELOC_DISCARD;
+    return Relocatable_relocs::RELOC_COPY;
+  }
 
   // Return the strategy to use for a local symbol which is a section
   // symbol, given the relocation type.
@@ -412,17 +422,13 @@ scan_relocatable_relocs(
                  strategy = Relocatable_relocs::RELOC_DISCARD;
                }
              else if (lsym.get_st_type() != elfcpp::STT_SECTION)
-               strategy = scan.local_non_section_strategy(r_type, object);
+               strategy = scan.local_non_section_strategy(r_type, object,
+                                                          r_sym);
              else
                {
                  strategy = scan.local_section_strategy(r_type, object);
                  if (strategy != Relocatable_relocs::RELOC_DISCARD)
-                   {
-                     section_offset_type dummy;
-                     Output_section* os = object->output_section(shndx,
-                                                                 &dummy);
-                     os->set_needs_symtab_index();
-                   }
+                    object->output_section(shndx)->set_needs_symtab_index();
                }
            }
        }
@@ -441,7 +447,7 @@ relocate_for_relocatable(
     const unsigned char* prelocs,
     size_t reloc_count,
     Output_section* output_section,
-    off_t offset_in_output_section,
+    typename elfcpp::Elf_types<size>::Elf_Addr offset_in_output_section,
     const Relocatable_relocs* rr,
     unsigned char* view,
     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
@@ -449,10 +455,12 @@ relocate_for_relocatable(
     unsigned char* reloc_view,
     section_size_type reloc_view_size)
 {
+  typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
   typedef typename Reloc_types<sh_type, size, big_endian>::Reloc Reltype;
   typedef typename Reloc_types<sh_type, size, big_endian>::Reloc_write
     Reltype_write;
   const int reloc_size = Reloc_types<sh_type, size, big_endian>::reloc_size;
+  const Address invalid_address = static_cast<Address>(0) - 1;
 
   Sized_relobj<size, big_endian>* const object = relinfo->object;
   const unsigned int local_count = object->local_symbol_count();
@@ -500,8 +508,7 @@ relocate_for_relocatable(
                unsigned int shndx =
                  object->local_symbol_input_shndx(r_sym, &is_ordinary);
                gold_assert(is_ordinary);
-               section_offset_type dummy;
-               Output_section* os = object->output_section(shndx, &dummy);
+               Output_section* os = object->output_section(shndx);
                gold_assert(os != NULL);
                gold_assert(os->needs_symtab_index());
                new_symndx = os->symtab_index();
@@ -526,23 +533,30 @@ relocate_for_relocatable(
       // Get the new offset--the location in the output section where
       // this relocation should be applied.
 
-      off_t offset = reloc.get_r_offset();
-      off_t new_offset;
-      if (offset_in_output_section != -1)
+      Address offset = reloc.get_r_offset();
+      Address new_offset;
+      if (offset_in_output_section != invalid_address)
        new_offset = offset + offset_in_output_section;
       else
        {
-         new_offset = output_section->output_offset(object,
-                                                    relinfo->data_shndx,
-                                                    offset);
-         gold_assert(new_offset != -1);
+          section_offset_type sot_offset =
+              convert_types<section_offset_type, Address>(offset);
+         section_offset_type new_sot_offset =
+              output_section->output_offset(object, relinfo->data_shndx,
+                                            sot_offset);
+         gold_assert(new_sot_offset != -1);
+          new_offset = new_sot_offset;
        }
 
       // In an object file, r_offset is an offset within the section.
       // In an executable or dynamic object, generated by
       // --emit-relocs, r_offset is an absolute address.
       if (!parameters->options().relocatable())
-       new_offset += view_address;
+       {
+         new_offset += view_address;
+         if (offset_in_output_section != invalid_address)
+           new_offset -= offset_in_output_section;
+       }
 
       reloc_write.put_r_offset(new_offset);
       reloc_write.put_r_info(elfcpp::elf_r_info<size>(new_symndx, r_type));
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