Refactor gold to enable support for MIPS-64 relocation format.
[deliverable/binutils-gdb.git] / gold / sparc.cc
index d34585a9b6e5df83a562841304a727e07d716924..c97c32ceb70dae85f640e84295297cf0d8ba2d6d 100644 (file)
@@ -1,6 +1,6 @@
 // sparc.cc -- sparc target support for gold.
 
-// Copyright (C) 2008-2015 Free Software Foundation, Inc.
+// Copyright (C) 2008-2016 Free Software Foundation, Inc.
 // Written by David S. Miller <davem@davemloft.net>.
 
 // This file is part of gold.
@@ -131,6 +131,21 @@ class Target_sparc : public Sized_target<size, big_endian>
                          const unsigned char* plocal_symbols,
                          Relocatable_relocs*);
 
+  // Scan the relocs for --emit-relocs.
+  void
+  emit_relocs_scan(Symbol_table* symtab,
+                  Layout* layout,
+                  Sized_relobj_file<size, big_endian>* object,
+                  unsigned int data_shndx,
+                  unsigned int sh_type,
+                  const unsigned char* prelocs,
+                  size_t reloc_count,
+                  Output_section* output_section,
+                  bool needs_special_offset_handling,
+                  size_t local_symbol_count,
+                  const unsigned char* plocal_syms,
+                  Relocatable_relocs* rr);
+
   // Emit relocations for a section.
   void
   relocate_relocs(const Relocate_info<size, big_endian>*,
@@ -140,7 +155,6 @@ class Target_sparc : public Sized_target<size, big_endian>
                  Output_section* output_section,
                  typename elfcpp::Elf_types<size>::Elf_Off
                     offset_in_output_section,
-                 const Relocatable_relocs*,
                  unsigned char* view,
                  typename elfcpp::Elf_types<size>::Elf_Addr view_address,
                  section_size_type view_size,
@@ -316,13 +330,10 @@ class Target_sparc : public Sized_target<size, big_endian>
     // Do a relocation.  Return false if the caller should not issue
     // any warnings about this relocation.
     inline bool
-    relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
-            Output_section*, size_t relnum,
-            const elfcpp::Rela<size, big_endian>&,
-            unsigned int r_type, const Sized_symbol<size>*,
-            const Symbol_value<size>*,
-            unsigned char*,
-            typename elfcpp::Elf_types<size>::Elf_Addr,
+    relocate(const Relocate_info<size, big_endian>*, unsigned int,
+            Target_sparc*, Output_section*, size_t, const unsigned char*,
+            const Sized_symbol<size>*, const Symbol_value<size>*,
+            unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr,
             section_size_type);
 
    private:
@@ -349,15 +360,6 @@ class Target_sparc : public Sized_target<size, big_endian>
     unsigned char *reloc_adjust_addr_;
   };
 
-  // A class which returns the size required for a relocation type,
-  // used while scanning relocs during a relocatable link.
-  class Relocatable_size_for_reloc
-  {
-   public:
-    unsigned int
-    get_size_for_reloc(unsigned int, Relobj*);
-  };
-
   // Get the GOT section, creating it if necessary.
   Output_data_got<size, big_endian>*
   got_section(Symbol_table*, Layout*);
@@ -415,10 +417,13 @@ class Target_sparc : public Sized_target<size, big_endian>
             unsigned int shndx, Output_section* output_section,
             Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
   {
+    unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
     this->copy_relocs_.copy_reloc(symtab, layout,
                                  symtab->get_sized_symbol<size>(sym),
                                  object, shndx, output_section,
-                                 reloc, this->rela_dyn_section(layout));
+                                 r_type, reloc.get_r_offset(),
+                                 reloc.get_r_addend(),
+                                 this->rela_dyn_section(layout));
   }
 
   // Information about this specific target which we pass to the
@@ -482,7 +487,8 @@ Target::Target_info Target_sparc<32, true>::sparc_info =
   0,                   // large_common_section_flags
   NULL,                        // attributes_section
   NULL,                        // attributes_vendor
-  "_start"             // entry_symbol_name
+  "_start",            // entry_symbol_name
+  32,                  // hash_entry_size
 };
 
 template<>
@@ -509,7 +515,8 @@ Target::Target_info Target_sparc<64, true>::sparc_info =
   0,                   // large_common_section_flags
   NULL,                        // attributes_section
   NULL,                        // attributes_vendor
-  "_start"             // entry_symbol_name
+  "_start",            // entry_symbol_name
+  32,                  // hash_entry_size
 };
 
 // We have to take care here, even when operating in little-endian
@@ -1107,13 +1114,12 @@ public:
   // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10
   static inline void
   gdop_hix22(unsigned char* view,
-            typename elfcpp::Elf_types<size>::Elf_Addr value,
-            typename elfcpp::Elf_types<size>::Elf_Addr addend)
+            typename elfcpp::Elf_types<size>::Elf_Addr value)
   {
     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
     Valtype* wv = reinterpret_cast<Valtype*>(view);
     Valtype val = elfcpp::Swap<32, true>::readval(wv);
-    int32_t reloc = static_cast<int32_t>(value + addend);
+    int32_t reloc = static_cast<int32_t>(value);
 
     val &= ~0x3fffff;
 
@@ -1170,13 +1176,12 @@ public:
   // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00
   static inline void
   gdop_lox10(unsigned char* view,
-            typename elfcpp::Elf_types<size>::Elf_Addr value,
-            typename elfcpp::Elf_types<size>::Elf_Addr addend)
+            typename elfcpp::Elf_types<size>::Elf_Addr value)
   {
     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
     Valtype* wv = reinterpret_cast<Valtype*>(view);
     Valtype val = elfcpp::Swap<32, true>::readval(wv);
-    int32_t reloc = static_cast<int32_t>(value + addend);
+    int32_t reloc = static_cast<int32_t>(value);
 
     if (reloc < 0)
       reloc = (reloc & 0x3ff) | 0x1c00;
@@ -3037,9 +3042,10 @@ Target_sparc<size, big_endian>::gc_process_relocs(
 {
   typedef Target_sparc<size, big_endian> Sparc;
   typedef typename Target_sparc<size, big_endian>::Scan Scan;
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
 
-  gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
-                         typename Target_sparc::Relocatable_size_for_reloc>(
+  gold::gc_process_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
     symtab,
     layout,
     this,
@@ -3071,7 +3077,8 @@ Target_sparc<size, big_endian>::scan_relocs(
                        const unsigned char* plocal_symbols)
 {
   typedef Target_sparc<size, big_endian> Sparc;
-  typedef typename Target_sparc<size, big_endian>::Scan Scan;
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
 
   if (sh_type == elfcpp::SHT_REL)
     {
@@ -3080,7 +3087,7 @@ Target_sparc<size, big_endian>::scan_relocs(
       return;
     }
 
-  gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
+  gold::scan_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
     symtab,
     layout,
     this,
@@ -3166,17 +3173,19 @@ template<int size, bool big_endian>
 inline bool
 Target_sparc<size, big_endian>::Relocate::relocate(
                        const Relocate_info<size, big_endian>* relinfo,
+                       unsigned int,
                        Target_sparc* target,
                        Output_section*,
                        size_t relnum,
-                       const elfcpp::Rela<size, big_endian>& rela,
-                       unsigned int r_type,
+                       const unsigned char* preloc,
                        const Sized_symbol<size>* gsym,
                        const Symbol_value<size>* psymval,
                        unsigned char* view,
                        typename elfcpp::Elf_types<size>::Elf_Addr address,
                        section_size_type view_size)
 {
+  const elfcpp::Rela<size, big_endian> rela(preloc);
+  unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info());
   bool orig_is_ifunc = psymval->is_ifunc_symbol();
   r_type &= 0xff;
 
@@ -3244,7 +3253,7 @@ Target_sparc<size, big_endian>::Relocate::relocate(
              && !gsym->is_preemptible()
              && !orig_is_ifunc))
        {
-         got_offset = psymval->value(object, 0) - target->got_address();
+         got_offset = psymval->value(object, addend) - target->got_address();
          gdop_valid = true;
          break;
        }
@@ -3384,7 +3393,7 @@ Target_sparc<size, big_endian>::Relocate::relocate(
     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
       if (gdop_valid)
        {
-         Reloc::gdop_lox10(view, got_offset, addend);
+         Reloc::gdop_lox10(view, got_offset);
          break;
        }
       /* Fall through.  */
@@ -3395,7 +3404,7 @@ Target_sparc<size, big_endian>::Relocate::relocate(
     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
       if (gdop_valid)
        {
-         Reloc::gdop_hix22(view, got_offset, addend);
+         Reloc::gdop_hix22(view, got_offset);
          break;
        }
       /* Fall through.  */
@@ -4141,11 +4150,13 @@ Target_sparc<size, big_endian>::relocate_section(
 {
   typedef Target_sparc<size, big_endian> Sparc;
   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
 
   gold_assert(sh_type == elfcpp::SHT_RELA);
 
-  gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
-                        Sparc_relocate, gold::Default_comdat_behavior>(
+  gold::relocate_section<size, big_endian, Sparc, Sparc_relocate,
+                        gold::Default_comdat_behavior, Classify_reloc>(
     relinfo,
     this,
     prelocs,
@@ -4158,20 +4169,6 @@ Target_sparc<size, big_endian>::relocate_section(
     reloc_symbol_changes);
 }
 
-// Return the size of a relocation while scanning during a relocatable
-// link.
-
-template<int size, bool big_endian>
-unsigned int
-Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
-    unsigned int,
-    Relobj*)
-{
-  // We are always SHT_RELA, so we should never get here.
-  gold_unreachable();
-  return 0;
-}
-
 // Scan the relocs during a relocatable link.
 
 template<int size, bool big_endian>
@@ -4190,13 +4187,14 @@ Target_sparc<size, big_endian>::scan_relocatable_relocs(
                        const unsigned char* plocal_symbols,
                        Relocatable_relocs* rr)
 {
-  gold_assert(sh_type == elfcpp::SHT_RELA);
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
+  typedef gold::Default_scan_relocatable_relocs<Classify_reloc>
+      Scan_relocatable_relocs;
 
-  typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
-    Relocatable_size_for_reloc> Scan_relocatable_relocs;
+  gold_assert(sh_type == elfcpp::SHT_RELA);
 
-  gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
-      Scan_relocatable_relocs>(
+  gold::scan_relocatable_relocs<size, big_endian, Scan_relocatable_relocs>(
     symtab,
     layout,
     object,
@@ -4210,6 +4208,45 @@ Target_sparc<size, big_endian>::scan_relocatable_relocs(
     rr);
 }
 
+// Scan the relocs for --emit-relocs.
+
+template<int size, bool big_endian>
+void
+Target_sparc<size, big_endian>::emit_relocs_scan(
+    Symbol_table* symtab,
+    Layout* layout,
+    Sized_relobj_file<size, big_endian>* object,
+    unsigned int data_shndx,
+    unsigned int sh_type,
+    const unsigned char* prelocs,
+    size_t reloc_count,
+    Output_section* output_section,
+    bool needs_special_offset_handling,
+    size_t local_symbol_count,
+    const unsigned char* plocal_syms,
+    Relocatable_relocs* rr)
+{
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
+  typedef gold::Default_emit_relocs_strategy<Classify_reloc>
+      Emit_relocs_strategy;
+
+  gold_assert(sh_type == elfcpp::SHT_RELA);
+
+  gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>(
+    symtab,
+    layout,
+    object,
+    data_shndx,
+    prelocs,
+    reloc_count,
+    output_section,
+    needs_special_offset_handling,
+    local_symbol_count,
+    plocal_syms,
+    rr);
+}
+
 // Emit relocations for a section.
 
 template<int size, bool big_endian>
@@ -4221,22 +4258,23 @@ Target_sparc<size, big_endian>::relocate_relocs(
     size_t reloc_count,
     Output_section* output_section,
     typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
-    const Relocatable_relocs* rr,
     unsigned char* view,
     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
     section_size_type view_size,
     unsigned char* reloc_view,
     section_size_type reloc_view_size)
 {
+  typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+      Classify_reloc;
+
   gold_assert(sh_type == elfcpp::SHT_RELA);
 
-  gold::relocate_relocs<size, big_endian, elfcpp::SHT_RELA>(
+  gold::relocate_relocs<size, big_endian, Classify_reloc>(
     relinfo,
     prelocs,
     reloc_count,
     output_section,
     offset_in_output_section,
-    rr,
     view,
     view_address,
     view_size,
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