gdb/
[binutils-gdb.git] / gold / reloc.cc
index 3018dc3daf5f497c6c7358ad95bc841a631a0ffe..8879f0a5042703d72256ee82eb792e1d134e520d 100644 (file)
@@ -1,6 +1,6 @@
 // reloc.cc -- relocate input files for gold.
 
-// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -72,19 +72,18 @@ Read_relocs::run(Workqueue* workqueue)
   if (parameters->options().gc_sections()
       || parameters->options().icf_enabled())
     {
-      workqueue->queue_next(new Gc_process_relocs(this->options_,
-                                                  this->symtab_,
+      workqueue->queue_next(new Gc_process_relocs(this->symtab_,
                                                   this->layout_, 
                                                   this->object_, rd,
-                                                  this->symtab_lock_, 
-                                                  this->blocker_));
+                                                  this->this_blocker_,
+                                                 this->next_blocker_));
     }
   else
     {
-      workqueue->queue_next(new Scan_relocs(this->options_, this->symtab_,
-                                            this->layout_, this->object_, rd,
-                                            this->symtab_lock_, 
-                                            this->blocker_));
+      workqueue->queue_next(new Scan_relocs(this->symtab_, this->layout_,
+                                           this->object_, rd,
+                                            this->this_blocker_,
+                                           this->next_blocker_));
     }
 }
 
@@ -98,13 +97,22 @@ Read_relocs::get_name() const
 
 // Gc_process_relocs methods.
 
-// These tasks process the relocations read by Read_relocs and 
+Gc_process_relocs::~Gc_process_relocs()
+{
+  if (this->this_blocker_ != NULL)
+    delete this->this_blocker_;
+}
+
+// These tasks process the relocations read by Read_relocs and
 // determine which sections are referenced and which are garbage.
-// This task is done only when --gc-sections is used.
+// This task is done only when --gc-sections is used.  This is blocked
+// by THIS_BLOCKER_.  It unblocks NEXT_BLOCKER_.
 
 Task_token*
 Gc_process_relocs::is_runnable()
 {
+  if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
+    return this->this_blocker_;
   if (this->object_->is_locked())
     return this->object_->token();
   return NULL;
@@ -114,14 +122,13 @@ void
 Gc_process_relocs::locks(Task_locker* tl)
 {
   tl->add(this, this->object_->token());
-  tl->add(this, this->blocker_);
+  tl->add(this, this->next_blocker_);
 }
 
 void
 Gc_process_relocs::run(Workqueue*)
 {
-  this->object_->gc_process_relocs(this->options_, this->symtab_, this->layout_,
-                    this->rd_);
+  this->object_->gc_process_relocs(this->symtab_, this->layout_, this->rd_);
   this->object_->release();
 }
 
@@ -135,6 +142,12 @@ Gc_process_relocs::get_name() const
 
 // Scan_relocs methods.
 
+Scan_relocs::~Scan_relocs()
+{
+  if (this->this_blocker_ != NULL)
+    delete this->this_blocker_;
+}
+
 // These tasks scan the relocations read by Read_relocs and mark up
 // the symbol table to indicate which relocations are required.  We
 // use a lock on the symbol table to keep them from interfering with
@@ -143,8 +156,8 @@ Gc_process_relocs::get_name() const
 Task_token*
 Scan_relocs::is_runnable()
 {
-  if (!this->symtab_lock_->is_writable())
-    return this->symtab_lock_;
+  if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
+    return this->this_blocker_;
   if (this->object_->is_locked())
     return this->object_->token();
   return NULL;
@@ -157,8 +170,7 @@ void
 Scan_relocs::locks(Task_locker* tl)
 {
   tl->add(this, this->object_->token());
-  tl->add(this, this->symtab_lock_);
-  tl->add(this, this->blocker_);
+  tl->add(this, this->next_blocker_);
 }
 
 // Scan the relocs.
@@ -166,11 +178,10 @@ Scan_relocs::locks(Task_locker* tl)
 void
 Scan_relocs::run(Workqueue*)
 {
-  this->object_->scan_relocs(this->options_, this->symtab_, this->layout_,
-                            this->rd_);
-  this->object_->release();
+  this->object_->scan_relocs(this->symtab_, this->layout_, this->rd_);
   delete this->rd_;
   this->rd_ = NULL;
+  this->object_->release();
 }
 
 // Return a debugging name for the task.
@@ -216,8 +227,7 @@ Relocate_task::locks(Task_locker* tl)
 void
 Relocate_task::run(Workqueue*)
 {
-  this->object_->relocate(this->options_, this->symtab_, this->layout_,
-                         this->of_);
+  this->object_->relocate(this->symtab_, this->layout_, this->of_);
 
   // This is normally the last thing we will do with an object, so
   // uncache all views.
@@ -360,10 +370,9 @@ Sized_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd)
 
 template<int size, bool big_endian>
 void
-Sized_relobj<size, big_endian>::do_gc_process_relocs(const General_options& options,
-                                              Symbol_table* symtab,
-                                              Layout* layout,
-                                              Read_relocs_data* rd)
+Sized_relobj<size, big_endian>::do_gc_process_relocs(Symbol_table* symtab,
+                                                    Layout* layout,
+                                                    Read_relocs_data* rd)
 {  
   Sized_target<size, big_endian>* target =
     parameters->sized_target<size, big_endian>();
@@ -384,7 +393,7 @@ Sized_relobj<size, big_endian>::do_gc_process_relocs(const General_options& opti
            // only scan allocated sections.  We may see a non-allocated
            // section here if we are emitting relocs.
            if (p->is_data_section_allocated)
-              target->gc_process_relocs(options, symtab, layout, this, 
+              target->gc_process_relocs(symtab, layout, this, 
                                         p->data_shndx, p->sh_type, 
                                         p->contents->data(), p->reloc_count, 
                                         p->output_section,
@@ -401,8 +410,7 @@ Sized_relobj<size, big_endian>::do_gc_process_relocs(const General_options& opti
 
 template<int size, bool big_endian>
 void
-Sized_relobj<size, big_endian>::do_scan_relocs(const General_options& options,
-                                              Symbol_table* symtab,
+Sized_relobj<size, big_endian>::do_scan_relocs(Symbol_table* symtab,
                                               Layout* layout,
                                               Read_relocs_data* rd)
 {
@@ -434,21 +442,21 @@ Sized_relobj<size, big_endian>::do_scan_relocs(const General_options& options,
          // only scan allocated sections.  We may see a non-allocated
          // section here if we are emitting relocs.
          if (p->is_data_section_allocated)
-           target->scan_relocs(options, symtab, layout, this, p->data_shndx,
+           target->scan_relocs(symtab, layout, this, p->data_shndx,
                                p->sh_type, p->contents->data(),
                                p->reloc_count, p->output_section,
                                p->needs_special_offset_handling,
                                this->local_symbol_count_,
                                local_symbols);
          if (parameters->options().emit_relocs())
-           this->emit_relocs_scan(options, symtab, layout, local_symbols, p);
+           this->emit_relocs_scan(symtab, layout, local_symbols, p);
        }
       else
        {
          Relocatable_relocs* rr = this->relocatable_relocs(p->reloc_shndx);
          gold_assert(rr != NULL);
          rr->set_reloc_count(p->reloc_count);
-         target->scan_relocatable_relocs(options, symtab, layout, this,
+         target->scan_relocatable_relocs(symtab, layout, this,
                                          p->data_shndx, p->sh_type,
                                          p->contents->data(),
                                          p->reloc_count,
@@ -510,7 +518,6 @@ class Emit_relocs_strategy
 template<int size, bool big_endian>
 void
 Sized_relobj<size, big_endian>::emit_relocs_scan(
-    const General_options& options,
     Symbol_table* symtab,
     Layout* layout,
     const unsigned char* plocal_syms,
@@ -521,14 +528,13 @@ Sized_relobj<size, big_endian>::emit_relocs_scan(
   rr->set_reloc_count(p->reloc_count);
 
   if (p->sh_type == elfcpp::SHT_REL)
-    this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(options, symtab, layout,
+    this->emit_relocs_scan_reltype<elfcpp::SHT_REL>(symtab, layout,
                                                    plocal_syms, p, rr);
   else
     {
       gold_assert(p->sh_type == elfcpp::SHT_RELA);
-      this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(options, symtab,
-                                                      layout, plocal_syms, p,
-                                                      rr);
+      this->emit_relocs_scan_reltype<elfcpp::SHT_RELA>(symtab, layout,
+                                                      plocal_syms, p, rr);
     }
 }
 
@@ -539,7 +545,6 @@ template<int size, bool big_endian>
 template<int sh_type>
 void
 Sized_relobj<size, big_endian>::emit_relocs_scan_reltype(
-    const General_options& options,
     Symbol_table* symtab,
     Layout* layout,
     const unsigned char* plocal_syms,
@@ -548,7 +553,6 @@ Sized_relobj<size, big_endian>::emit_relocs_scan_reltype(
 {
   scan_relocatable_relocs<size, big_endian, sh_type,
                          Emit_relocs_strategy<sh_type> >(
-    options,
     symtab,
     layout,
     this,
@@ -566,8 +570,7 @@ Sized_relobj<size, big_endian>::emit_relocs_scan_reltype(
 
 template<int size, bool big_endian>
 void
-Sized_relobj<size, big_endian>::do_relocate(const General_options& options,
-                                           const Symbol_table* symtab,
+Sized_relobj<size, big_endian>::do_relocate(const Symbol_table* symtab,
                                            const Layout* layout,
                                            Output_file* of)
 {
@@ -593,7 +596,7 @@ Sized_relobj<size, big_endian>::do_relocate(const General_options& options,
 
   // Apply relocations.
 
-  this->relocate_sections(options, symtab, layout, pshdrs, &views);
+  this->relocate_sections(symtab, layout, pshdrs, &views);
 
   // After we've done the relocations, we release the hash tables,
   // since we no longer need them.
@@ -799,8 +802,7 @@ Sized_relobj<size, big_endian>::write_sections(const unsigned char* pshdrs,
 
 template<int size, bool big_endian>
 void
-Sized_relobj<size, big_endian>::relocate_sections(
-    const General_options& options,
+Sized_relobj<size, big_endian>::do_relocate_sections(
     const Symbol_table* symtab,
     const Layout* layout,
     const unsigned char* pshdrs,
@@ -814,7 +816,6 @@ Sized_relobj<size, big_endian>::relocate_sections(
   const std::vector<Address>& out_offsets(this->section_offsets_);
 
   Relocate_info<size, big_endian> relinfo;
-  relinfo.options = &options;
   relinfo.symtab = symtab;
   relinfo.layout = layout;
   relinfo.object = this;
@@ -1105,14 +1106,17 @@ Sized_relobj<size, big_endian>::split_stack_adjust_reltype(
       // cases we will ask for a large stack unnecessarily, but this
       // is not fatal.  FIXME: Some targets have symbols which are
       // functions but are not type STT_FUNC, e.g., STT_ARM_TFUNC.
-      if (gsym->type() == elfcpp::STT_FUNC
-         && !gsym->is_undefined()
+      if (!gsym->is_undefined()
          && gsym->source() == Symbol::FROM_OBJECT
          && !gsym->object()->uses_split_stack())
        {
-         section_offset_type offset =
-           convert_to_section_size_type(reloc.get_r_offset());
-         non_split_refs.push_back(offset);
+         unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
+         if (parameters->target().is_call_to_non_split(gsym, r_type))
+           {
+             section_offset_type offset =
+               convert_to_section_size_type(reloc.get_r_offset());
+             non_split_refs.push_back(offset);
+           }
        }
     }
 
@@ -1431,44 +1435,39 @@ Sized_relobj<64, true>::do_read_relocs(Read_relocs_data* rd);
 #ifdef HAVE_TARGET_32_LITTLE
 template
 void
-Sized_relobj<32, false>::do_gc_process_relocs(const General_options& options,
-                                       Symbol_table* symtab,
-                                       Layout* layout,
-                                       Read_relocs_data* rd);
+Sized_relobj<32, false>::do_gc_process_relocs(Symbol_table* symtab,
+                                             Layout* layout,
+                                             Read_relocs_data* rd);
 #endif
 
 #ifdef HAVE_TARGET_32_BIG
 template
 void
-Sized_relobj<32, true>::do_gc_process_relocs(const General_options& options,
-                                      Symbol_table* symtab,
-                                      Layout* layout,
-                                      Read_relocs_data* rd);
+Sized_relobj<32, true>::do_gc_process_relocs(Symbol_table* symtab,
+                                            Layout* layout,
+                                            Read_relocs_data* rd);
 #endif
 
 #ifdef HAVE_TARGET_64_LITTLE
 template
 void
-Sized_relobj<64, false>::do_gc_process_relocs(const General_options& options,
-                                       Symbol_table* symtab,
-                                       Layout* layout,
-                                       Read_relocs_data* rd);
+Sized_relobj<64, false>::do_gc_process_relocs(Symbol_table* symtab,
+                                             Layout* layout,
+                                             Read_relocs_data* rd);
 #endif
 
 #ifdef HAVE_TARGET_64_BIG
 template
 void
-Sized_relobj<64, true>::do_gc_process_relocs(const General_options& options,
-                                      Symbol_table* symtab,
-                                      Layout* layout,
-                                      Read_relocs_data* rd);
+Sized_relobj<64, true>::do_gc_process_relocs(Symbol_table* symtab,
+                                            Layout* layout,
+                                            Read_relocs_data* rd);
 #endif
 
 #ifdef HAVE_TARGET_32_LITTLE
 template
 void
-Sized_relobj<32, false>::do_scan_relocs(const General_options& options,
-                                       Symbol_table* symtab,
+Sized_relobj<32, false>::do_scan_relocs(Symbol_table* symtab,
                                        Layout* layout,
                                        Read_relocs_data* rd);
 #endif
@@ -1476,8 +1475,7 @@ Sized_relobj<32, false>::do_scan_relocs(const General_options& options,
 #ifdef HAVE_TARGET_32_BIG
 template
 void
-Sized_relobj<32, true>::do_scan_relocs(const General_options& options,
-                                      Symbol_table* symtab,
+Sized_relobj<32, true>::do_scan_relocs(Symbol_table* symtab,
                                       Layout* layout,
                                       Read_relocs_data* rd);
 #endif
@@ -1485,8 +1483,7 @@ Sized_relobj<32, true>::do_scan_relocs(const General_options& options,
 #ifdef HAVE_TARGET_64_LITTLE
 template
 void
-Sized_relobj<64, false>::do_scan_relocs(const General_options& options,
-                                       Symbol_table* symtab,
+Sized_relobj<64, false>::do_scan_relocs(Symbol_table* symtab,
                                        Layout* layout,
                                        Read_relocs_data* rd);
 #endif
@@ -1494,8 +1491,7 @@ Sized_relobj<64, false>::do_scan_relocs(const General_options& options,
 #ifdef HAVE_TARGET_64_BIG
 template
 void
-Sized_relobj<64, true>::do_scan_relocs(const General_options& options,
-                                      Symbol_table* symtab,
+Sized_relobj<64, true>::do_scan_relocs(Symbol_table* symtab,
                                       Layout* layout,
                                       Read_relocs_data* rd);
 #endif
@@ -1503,8 +1499,7 @@ Sized_relobj<64, true>::do_scan_relocs(const General_options& options,
 #ifdef HAVE_TARGET_32_LITTLE
 template
 void
-Sized_relobj<32, false>::do_relocate(const General_options& options,
-                                    const Symbol_table* symtab,
+Sized_relobj<32, false>::do_relocate(const Symbol_table* symtab,
                                     const Layout* layout,
                                     Output_file* of);
 #endif
@@ -1512,8 +1507,7 @@ Sized_relobj<32, false>::do_relocate(const General_options& options,
 #ifdef HAVE_TARGET_32_BIG
 template
 void
-Sized_relobj<32, true>::do_relocate(const General_options& options,
-                                   const Symbol_table* symtab,
+Sized_relobj<32, true>::do_relocate(const Symbol_table* symtab,
                                    const Layout* layout,
                                    Output_file* of);
 #endif
@@ -1521,8 +1515,7 @@ Sized_relobj<32, true>::do_relocate(const General_options& options,
 #ifdef HAVE_TARGET_64_LITTLE
 template
 void
-Sized_relobj<64, false>::do_relocate(const General_options& options,
-                                    const Symbol_table* symtab,
+Sized_relobj<64, false>::do_relocate(const Symbol_table* symtab,
                                     const Layout* layout,
                                     Output_file* of);
 #endif
@@ -1530,12 +1523,91 @@ Sized_relobj<64, false>::do_relocate(const General_options& options,
 #ifdef HAVE_TARGET_64_BIG
 template
 void
-Sized_relobj<64, true>::do_relocate(const General_options& options,
-                                   const Symbol_table* symtab,
+Sized_relobj<64, true>::do_relocate(const Symbol_table* symtab,
                                    const Layout* layout,
                                    Output_file* of);
 #endif
 
+#ifdef HAVE_TARGET_32_LITTLE
+template
+void
+Sized_relobj<32, false>::do_relocate_sections(
+    const Symbol_table* symtab,
+    const Layout* layout,
+    const unsigned char* pshdrs,
+    Views* pviews);
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+void
+Sized_relobj<32, true>::do_relocate_sections(
+    const Symbol_table* symtab,
+    const Layout* layout,
+    const unsigned char* pshdrs,
+    Views* pviews);
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+void
+Sized_relobj<64, false>::do_relocate_sections(
+    const Symbol_table* symtab,
+    const Layout* layout,
+    const unsigned char* pshdrs,
+    Views* pviews);
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+void
+Sized_relobj<64, true>::do_relocate_sections(
+    const Symbol_table* symtab,
+    const Layout* layout,
+    const unsigned char* pshdrs,
+    Views* pviews);
+#endif
+
+#ifdef HAVE_TARGET_32_LITTLE
+template
+void
+Sized_relobj<32, false>::initialize_input_to_output_maps();
+
+template
+void
+Sized_relobj<32, false>::free_input_to_output_maps();
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+void
+Sized_relobj<32, true>::initialize_input_to_output_maps();
+
+template
+void
+Sized_relobj<32, true>::free_input_to_output_maps();
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+void
+Sized_relobj<64, false>::initialize_input_to_output_maps();
+
+template
+void
+Sized_relobj<64, false>::free_input_to_output_maps();
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+void
+Sized_relobj<64, true>::initialize_input_to_output_maps();
+
+template
+void
+Sized_relobj<64, true>::free_input_to_output_maps();
+#endif
+
 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
 template
 class Merged_symbol_value<32>;