* configure: Regenerate to track ../common/common.m4 changes.
[deliverable/binutils-gdb.git] / gold / dynobj.cc
index bfcc78ae8d206fa8263b2d6eec3993e023e402c3..89186adecbc84cfcaf8c2119487a7a824e217a73 100644 (file)
@@ -72,7 +72,8 @@ Sized_dynobj<size, big_endian>::Sized_dynobj(
     off_t offset,
     const elfcpp::Ehdr<size, big_endian>& ehdr)
   : Dynobj(name, input_file, offset),
-    elf_file_(this, ehdr)
+    elf_file_(this, ehdr),
+    dynsym_shndx_(-1U)
 {
 }
 
@@ -98,18 +99,18 @@ template<int size, bool big_endian>
 void
 Sized_dynobj<size, big_endian>::find_dynsym_sections(
     const unsigned char* pshdrs,
-    unsigned int* pdynsym_shndx,
     unsigned int* pversym_shndx,
     unsigned int* pverdef_shndx,
     unsigned int* pverneed_shndx,
     unsigned int* pdynamic_shndx)
 {
-  *pdynsym_shndx = -1U;
   *pversym_shndx = -1U;
   *pverdef_shndx = -1U;
   *pverneed_shndx = -1U;
   *pdynamic_shndx = -1U;
 
+  unsigned int xindex_shndx = 0;
+  unsigned int xindex_link = 0;
   const unsigned int shnum = this->shnum();
   const unsigned char* p = pshdrs;
   for (unsigned int i = 0; i < shnum; ++i, p += This::shdr_size)
@@ -120,7 +121,15 @@ Sized_dynobj<size, big_endian>::find_dynsym_sections(
       switch (shdr.get_sh_type())
        {
        case elfcpp::SHT_DYNSYM:
-         pi = pdynsym_shndx;
+         this->dynsym_shndx_ = i;
+         if (xindex_shndx > 0 && xindex_link == i)
+           {
+             Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
+             xindex->read_symtab_xindex<size, big_endian>(this, xindex_shndx,
+                                                          pshdrs);
+             this->set_xindex(xindex);
+           }
+         pi = NULL;
          break;
        case elfcpp::SHT_GNU_versym:
          pi = pversym_shndx;
@@ -134,6 +143,18 @@ Sized_dynobj<size, big_endian>::find_dynsym_sections(
        case elfcpp::SHT_DYNAMIC:
          pi = pdynamic_shndx;
          break;
+       case elfcpp::SHT_SYMTAB_SHNDX:
+         xindex_shndx = i;
+         xindex_link = this->adjust_shndx(shdr.get_sh_link());
+         if (xindex_link == this->dynsym_shndx_)
+           {
+             Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
+             xindex->read_symtab_xindex<size, big_endian>(this, xindex_shndx,
+                                                          pshdrs);
+             this->set_xindex(xindex);
+           }
+         pi = NULL;
+         break;
        default:
          pi = NULL;
          break;
@@ -178,12 +199,12 @@ Sized_dynobj<size, big_endian>::read_dynsym_section(
 
   gold_assert(shdr.get_sh_type() == type);
 
-  if (shdr.get_sh_link() != link)
+  if (this->adjust_shndx(shdr.get_sh_link()) != link)
     this->error(_("unexpected link in section %u header: %u != %u"),
-               shndx, shdr.get_sh_link(), link);
+               shndx, this->adjust_shndx(shdr.get_sh_link()), link);
 
   *view = this->get_lasting_view(shdr.get_sh_offset(), shdr.get_sh_size(),
-                                false);
+                                true, false);
   *view_size = convert_to_section_size_type(shdr.get_sh_size());
   *view_info = shdr.get_sh_info();
 }
@@ -208,9 +229,9 @@ Sized_dynobj<size, big_endian>::read_dynamic(const unsigned char* pshdrs,
 
   const off_t dynamic_size = dynamicshdr.get_sh_size();
   const unsigned char* pdynamic = this->get_view(dynamicshdr.get_sh_offset(),
-                                                dynamic_size, false);
+                                                dynamic_size, true, false);
 
-  const unsigned int link = dynamicshdr.get_sh_link();
+  const unsigned int link = this->adjust_shndx(dynamicshdr.get_sh_link());
   if (link != strtab_shndx)
     {
       if (link >= this->shnum())
@@ -229,7 +250,8 @@ Sized_dynobj<size, big_endian>::read_dynamic(const unsigned char* pshdrs,
        }
 
       strtab_size = strtabshdr.get_sh_size();
-      strtabu = this->get_view(strtabshdr.get_sh_offset(), strtab_size, false);
+      strtabu = this->get_view(strtabshdr.get_sh_offset(), strtab_size, false,
+                              false);
     }
 
   const char* const strtab = reinterpret_cast<const char*>(strtabu);
@@ -290,13 +312,12 @@ Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
 
   const unsigned char* const pshdrs = sd->section_headers->data();
 
-  unsigned int dynsym_shndx;
   unsigned int versym_shndx;
   unsigned int verdef_shndx;
   unsigned int verneed_shndx;
   unsigned int dynamic_shndx;
-  this->find_dynsym_sections(pshdrs, &dynsym_shndx, &versym_shndx,
-                            &verdef_shndx, &verneed_shndx, &dynamic_shndx);
+  this->find_dynsym_sections(pshdrs, &versym_shndx, &verdef_shndx,
+                            &verneed_shndx, &dynamic_shndx);
 
   unsigned int strtab_shndx = -1U;
 
@@ -306,19 +327,21 @@ Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
   sd->symbol_names = NULL;
   sd->symbol_names_size = 0;
 
-  if (dynsym_shndx != -1U)
+  if (this->dynsym_shndx_ != -1U)
     {
       // Get the dynamic symbols.
-      typename This::Shdr dynsymshdr(pshdrs + dynsym_shndx * This::shdr_size);
+      typename This::Shdr dynsymshdr(pshdrs
+                                    + this->dynsym_shndx_ * This::shdr_size);
       gold_assert(dynsymshdr.get_sh_type() == elfcpp::SHT_DYNSYM);
 
       sd->symbols = this->get_lasting_view(dynsymshdr.get_sh_offset(),
-                                          dynsymshdr.get_sh_size(), false);
+                                          dynsymshdr.get_sh_size(), true,
+                                          false);
       sd->symbols_size =
        convert_to_section_size_type(dynsymshdr.get_sh_size());
 
       // Get the symbol names.
-      strtab_shndx = dynsymshdr.get_sh_link();
+      strtab_shndx = this->adjust_shndx(dynsymshdr.get_sh_link());
       if (strtab_shndx >= this->shnum())
        {
          this->error(_("invalid dynamic symbol table name index: %u"),
@@ -336,7 +359,7 @@ Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
 
       sd->symbol_names = this->get_lasting_view(strtabshdr.get_sh_offset(),
                                                strtabshdr.get_sh_size(),
-                                               false);
+                                               false, false);
       sd->symbol_names_size =
        convert_to_section_size_type(strtabshdr.get_sh_size());
 
@@ -344,8 +367,8 @@ Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
 
       unsigned int dummy;
       this->read_dynsym_section(pshdrs, versym_shndx, elfcpp::SHT_GNU_versym,
-                               dynsym_shndx, &sd->versym, &sd->versym_size,
-                               &dummy);
+                               this->dynsym_shndx_,
+                               &sd->versym, &sd->versym_size, &dummy);
 
       // We require that the version definition and need section link
       // to the same string table as the dynamic symbol table.  This
@@ -373,6 +396,19 @@ Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
                       sd->symbol_names_size);
 }
 
+// Return the Xindex structure to use for object with lots of
+// sections.
+
+template<int size, bool big_endian>
+Xindex*
+Sized_dynobj<size, big_endian>::do_initialize_xindex()
+{
+  gold_assert(this->dynsym_shndx_ != -1U);
+  Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
+  xindex->initialize_symtab_xindex<size, big_endian>(this, this->dynsym_shndx_);
+  return xindex;
+}
+
 // Lay out the input sections for a dynamic object.  We don't want to
 // include sections from a dynamic object, so all that we actually do
 // here is check for .gnu.warning sections.
@@ -687,20 +723,22 @@ Dynobj::compute_bucket_count(const std::vector<uint32_t>& hashcodes,
   // based on the number of symbols there are.  If there are fewer
   // than 3 symbols we use 1 bucket, fewer than 17 symbols we use 3
   // buckets, fewer than 37 we use 17 buckets, and so forth.  We never
-  // use more than 32771 buckets.  This is straight from the old GNU
+  // use more than 262147 buckets.  This is straight from the old GNU
   // linker.
   static const unsigned int buckets[] =
   {
     1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 1031, 2053, 4099, 8209,
-    16411, 32771
+    16411, 32771, 65537, 131101, 262147
   };
   const int buckets_count = sizeof buckets / sizeof buckets[0];
 
   unsigned int symcount = hashcodes.size();
   unsigned int ret = 1;
+  const double full_fraction
+    = 1.0 - parameters->options().hash_bucket_empty_fraction();
   for (int i = 0; i < buckets_count; ++i)
     {
-      if (symcount < buckets[i])
+      if (symcount < buckets[i] * full_fraction)
        break;
       ret = buckets[i];
     }
@@ -1110,8 +1148,7 @@ Dynobj::sized_create_gnu_hash_table(
 
 template<int size, bool big_endian>
 unsigned char*
-Verdef::write(const Stringpool* dynpool, bool is_last, unsigned char* pb
-              ACCEPT_SIZE_ENDIAN) const
+Verdef::write(const Stringpool* dynpool, bool is_last, unsigned char* pb) const
 {
   const int verdef_size = elfcpp::Elf_sizes<size>::verdef_size;
   const int verdaux_size = elfcpp::Elf_sizes<size>::verdaux_size;
@@ -1190,7 +1227,7 @@ Verneed::finalize(unsigned int index)
 template<int size, bool big_endian>
 unsigned char*
 Verneed::write(const Stringpool* dynpool, bool is_last,
-              unsigned char* pb ACCEPT_SIZE_ENDIAN) const
+              unsigned char* pb) const
 {
   const int verneed_size = elfcpp::Elf_sizes<size>::verneed_size;
   const int vernaux_size = elfcpp::Elf_sizes<size>::vernaux_size;
@@ -1512,8 +1549,7 @@ Versions::symbol_section_contents(const Symbol_table* symtab,
                                  unsigned int local_symcount,
                                  const std::vector<Symbol*>& syms,
                                  unsigned char** pp,
-                                 unsigned int* psize
-                                  ACCEPT_SIZE_ENDIAN) const
+                                 unsigned int* psize) const
 {
   gold_assert(this->is_finalized_);
 
@@ -1553,8 +1589,7 @@ template<int size, bool big_endian>
 void
 Versions::def_section_contents(const Stringpool* dynpool,
                               unsigned char** pp, unsigned int* psize,
-                              unsigned int* pentries
-                               ACCEPT_SIZE_ENDIAN) const
+                              unsigned int* pentries) const
 {
   gold_assert(this->is_finalized_);
   gold_assert(!this->defs_.empty());
@@ -1579,9 +1614,9 @@ Versions::def_section_contents(const Stringpool* dynpool,
   for (p = this->defs_.begin(), i = 0;
        p != this->defs_.end();
        ++p, ++i)
-    pb = (*p)->write SELECT_SIZE_ENDIAN_NAME(size, big_endian)(
-            dynpool, i + 1 >= this->defs_.size(), pb
-            SELECT_SIZE_ENDIAN(size, big_endian));
+    pb = (*p)->write<size, big_endian>(dynpool,
+                                      i + 1 >= this->defs_.size(),
+                                      pb);
 
   gold_assert(static_cast<unsigned int>(pb - pbuf) == sz);
 
@@ -1597,8 +1632,7 @@ template<int size, bool big_endian>
 void
 Versions::need_section_contents(const Stringpool* dynpool,
                                unsigned char** pp, unsigned int *psize,
-                               unsigned int *pentries
-                                ACCEPT_SIZE_ENDIAN) const
+                               unsigned int *pentries) const
 {
   gold_assert(this->is_finalized_);
   gold_assert(!this->needs_.empty());
@@ -1623,9 +1657,9 @@ Versions::need_section_contents(const Stringpool* dynpool,
   for (p = this->needs_.begin(), i = 0;
        p != this->needs_.end();
        ++p, ++i)
-    pb = (*p)->write SELECT_SIZE_ENDIAN_NAME(size, big_endian)(
-           dynpool, i + 1 >= this->needs_.size(), pb
-            SELECT_SIZE_ENDIAN(size, big_endian));
+    pb = (*p)->write<size, big_endian>(dynpool,
+                                      i + 1 >= this->needs_.size(),
+                                      pb);
 
   gold_assert(static_cast<unsigned int>(pb - pbuf) == sz);
 
@@ -1666,8 +1700,7 @@ Versions::symbol_section_contents<32, false>(
     unsigned int,
     const std::vector<Symbol*>&,
     unsigned char**,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_32_BIG
@@ -1679,8 +1712,7 @@ Versions::symbol_section_contents<32, true>(
     unsigned int,
     const std::vector<Symbol*>&,
     unsigned char**,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, true)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_LITTLE
@@ -1692,8 +1724,7 @@ Versions::symbol_section_contents<64, false>(
     unsigned int,
     const std::vector<Symbol*>&,
     unsigned char**,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_BIG
@@ -1705,8 +1736,7 @@ Versions::symbol_section_contents<64, true>(
     unsigned int,
     const std::vector<Symbol*>&,
     unsigned char**,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, true)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_32_LITTLE
@@ -1716,8 +1746,7 @@ Versions::def_section_contents<32, false>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_32_BIG
@@ -1727,8 +1756,7 @@ Versions::def_section_contents<32, true>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, true)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_LITTLE
@@ -1738,8 +1766,7 @@ Versions::def_section_contents<64, false>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_BIG
@@ -1749,8 +1776,7 @@ Versions::def_section_contents<64, true>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, true)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_32_LITTLE
@@ -1760,8 +1786,7 @@ Versions::need_section_contents<32, false>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_32_BIG
@@ -1771,8 +1796,7 @@ Versions::need_section_contents<32, true>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(32, true)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_LITTLE
@@ -1782,8 +1806,7 @@ Versions::need_section_contents<64, false>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, false)) const;
+    unsigned int*) const;
 #endif
 
 #ifdef HAVE_TARGET_64_BIG
@@ -1793,8 +1816,7 @@ Versions::need_section_contents<64, true>(
     const Stringpool*,
     unsigned char**,
     unsigned int*,
-    unsigned int*
-    ACCEPT_SIZE_ENDIAN_EXPLICIT(64, true)) const;
+    unsigned int*) const;
 #endif
 
 } // End namespace gold.
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