2009-10-22 Hui Zhu <teawater@gmail.com>

[deliverable/binutils-gdb.git] / gold / powerpc.cc

diff --git a/gold/powerpc.cc b/gold/powerpc.cc
index 8eac78366edf695de92635bce047e680f0721d7e..71f2ae468e535bfbdfd6ec4a45025aa0fb68d44d 100644 (file)
--- a/gold/powerpc.cc
+++ b/gold/powerpc.cc
@@ -37,6 +37,7 @@
 #include "target-select.h"
 #include "tls.h"
 #include "errors.h"
+#include "gc.h"
 
 namespace
 {
@@ -110,7 +111,8 @@ class Target_powerpc : public Sized_target<size, big_endian>
                   bool needs_special_offset_handling,
                   unsigned char* view,
                   typename elfcpp::Elf_types<size>::Elf_Addr view_address,
-                  section_size_type view_size);
+                  section_size_type view_size,
+                  const Reloc_symbol_changes*);
 
   // Scan the relocs during a relocatable link.
   void
@@ -214,7 +216,8 @@ class Target_powerpc : public Sized_target<size, big_endian>
     // any warnings about this relocation.
     inline bool
     relocate(const Relocate_info<size, big_endian>*, Target_powerpc*,
-            size_t relnum, const elfcpp::Rela<size, big_endian>&,
+            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*,
@@ -283,17 +286,6 @@ class Target_powerpc : public Sized_target<size, big_endian>
   Reloc_section*
   rela_dyn_section(Layout*);
 
-  // Return true if the symbol may need a COPY relocation.
-  // References from an executable object to non-function symbols
-  // defined in a dynamic object may need a COPY relocation.
-  bool
-  may_need_copy_reloc(Symbol* gsym)
-  {
-    return (!parameters->options().shared()
-            && gsym->is_from_dynobj()
-            && gsym->type() != elfcpp::STT_FUNC);
-  }
-
   // Copy a relocation against a global symbol.
   void
   copy_reloc(Symbol_table* symtab, Layout* layout,
@@ -351,7 +343,11 @@ Target::Target_info Target_powerpc<32, true>::powerpc_info =
   "/usr/lib/ld.so.1",  // dynamic_linker
   0x10000000,          // default_text_segment_address
   64 * 1024,           // abi_pagesize (overridable by -z max-page-size)
-  4 * 1024             // common_pagesize (overridable by -z common-page-size)
+  4 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0                    // large_common_section_flags
 };
 
 template<>
@@ -368,7 +364,11 @@ Target::Target_info Target_powerpc<32, false>::powerpc_info =
   "/usr/lib/ld.so.1",  // dynamic_linker
   0x10000000,          // default_text_segment_address
   64 * 1024,           // abi_pagesize (overridable by -z max-page-size)
-  4 * 1024             // common_pagesize (overridable by -z common-page-size)
+  4 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0                    // large_common_section_flags
 };
 
 template<>
@@ -385,7 +385,11 @@ Target::Target_info Target_powerpc<64, true>::powerpc_info =
   "/usr/lib/ld.so.1",  // dynamic_linker
   0x10000000,          // default_text_segment_address
   64 * 1024,           // abi_pagesize (overridable by -z max-page-size)
-  8 * 1024             // common_pagesize (overridable by -z common-page-size)
+  8 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0                    // large_common_section_flags
 };
 
 template<>
@@ -402,7 +406,11 @@ Target::Target_info Target_powerpc<64, false>::powerpc_info =
   "/usr/lib/ld.so.1",  // dynamic_linker
   0x10000000,          // default_text_segment_address
   64 * 1024,           // abi_pagesize (overridable by -z max-page-size)
-  8 * 1024             // common_pagesize (overridable by -z common-page-size)
+  8 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0                    // large_common_section_flags
 };
 
 template<int size, bool big_endian>
@@ -1093,6 +1101,7 @@ Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object,
   // error per object file.
   if (this->issued_non_pic_error_)
     return;
+  gold_assert(parameters->options().output_is_position_independent());
   object->error(_("requires unsupported dynamic reloc; "
                  "recompile with -fPIC"));
   this->issued_non_pic_error_ = true;
@@ -1293,7 +1302,7 @@ Target_powerpc<size, big_endian>::Scan::global(
         // Make a dynamic relocation if necessary.
         if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
           {
-            if (target->may_need_copy_reloc(gsym))
+            if (gsym->may_need_copy_reloc())
               {
                target->copy_reloc(symtab, layout, object,
                                   data_shndx, output_section, gsym, reloc);
@@ -1346,7 +1355,7 @@ Target_powerpc<size, big_endian>::Scan::global(
          flags |= Symbol::FUNCTION_CALL;
        if (gsym->needs_dynamic_reloc(flags))
          {
-           if (target->may_need_copy_reloc(gsym))
+           if (gsym->may_need_copy_reloc())
              {
                target->copy_reloc(symtab, layout, object,
                                   data_shndx, output_section, gsym,
@@ -1578,6 +1587,7 @@ inline bool
 Target_powerpc<size, big_endian>::Relocate::relocate(
                        const Relocate_info<size, big_endian>* relinfo,
                        Target_powerpc* target,
+                       Output_section*,
                        size_t relnum,
                        const elfcpp::Rela<size, big_endian>& rela,
                        unsigned int r_type,
@@ -1846,7 +1856,8 @@ Target_powerpc<size, big_endian>::relocate_section(
                        bool needs_special_offset_handling,
                        unsigned char* view,
                        typename elfcpp::Elf_types<size>::Elf_Addr address,
-                       section_size_type view_size)
+                       section_size_type view_size,
+                       const Reloc_symbol_changes* reloc_symbol_changes)
 {
   typedef Target_powerpc<size, big_endian> Powerpc;
   typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate;
@@ -1863,7 +1874,8 @@ Target_powerpc<size, big_endian>::relocate_section(
     needs_special_offset_handling,
     view,
     address,
-    view_size);
+    view_size,
+    reloc_symbol_changes);
 }
 
 // Return the size of a relocation while scanning during a relocatable
@@ -1980,8 +1992,6 @@ public:
                       (big_endian ? "elf32-powerpc" : "elf32-powerpcle")))
   { }
 
-  Target* instantiated_target_;
-
   Target* do_recognize(int machine, int, int)
   {
     switch (size)
@@ -2000,15 +2010,11 @@ public:
        return NULL;
       }
 
-    return do_instantiate_target();
+    return this->instantiate_target();
   }
 
   Target* do_instantiate_target()
-  {
-    if (this->instantiated_target_ == NULL)
-      this->instantiated_target_ = new Target_powerpc<size, big_endian>();
-    return this->instantiated_target_;
-  }
+  { return new Target_powerpc<size, big_endian>(); }
 };
 
 Target_selector_powerpc<32, true> target_selector_ppc32;