Update year range in copyright notice of binutils files

[thirdparty/binutils-gdb.git] / gold / object.h

diff --git a/gold/object.h b/gold/object.h
index 0b786a5471ed84cc8586f2096af8175a717f453f..38f4a2fd3ff990e1ce18cbe60be5ebd92655467a 100644 (file)
--- a/gold/object.h
+++ b/gold/object.h
@@ -1,6 +1,6 @@
 // object.h -- support for an object file for linking in gold  -*- C++ -*-
 
-// Copyright (C) 2006-2018 Free Software Foundation, Inc.
+// Copyright (C) 2006-2021 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -373,6 +373,7 @@ struct Compressed_section_info
 {
   section_size_type size;
   elfcpp::Elf_Xword flag;
+  uint64_t addralign;
   const unsigned char* contents;
 };
 typedef std::map<unsigned int, Compressed_section_info> Compressed_section_map;
@@ -383,6 +384,47 @@ build_compressed_section_map(const unsigned char* pshdrs, unsigned int shnum,
                             const char* names, section_size_type names_size,
                             Object* obj, bool decompress_if_needed);
 
+// Osabi represents the EI_OSABI field from the ELF header.
+
+class Osabi
+{
+ public:
+  Osabi(unsigned char ei_osabi)
+    : ei_osabi_(static_cast<elfcpp::ELFOSABI>(ei_osabi))
+  { }
+
+  bool
+  has_shf_retain(elfcpp::Elf_Xword sh_flags) const
+  {
+    switch (this->ei_osabi_)
+      {
+      case elfcpp::ELFOSABI_GNU:
+      case elfcpp::ELFOSABI_FREEBSD:
+       return (sh_flags & elfcpp::SHF_GNU_RETAIN) != 0;
+      default:
+        break;
+      }
+    return false;
+  }
+
+  elfcpp::Elf_Xword
+  ignored_sh_flags() const
+  {
+    switch (this->ei_osabi_)
+      {
+      case elfcpp::ELFOSABI_GNU:
+      case elfcpp::ELFOSABI_FREEBSD:
+       return elfcpp::SHF_GNU_RETAIN;
+      default:
+        break;
+      }
+    return 0;
+  }
+
+ private:
+  elfcpp::ELFOSABI ei_osabi_;
+};
+
 // Object is an abstract base class which represents either a 32-bit
 // or a 64-bit input object.  This can be a regular object file
 // (ET_REL) or a shared object (ET_DYN).
@@ -808,7 +850,8 @@ class Object
 
   bool
   section_is_compressed(unsigned int shndx,
-                       section_size_type* uncompressed_size) const
+                       section_size_type* uncompressed_size,
+                       elfcpp::Elf_Xword* palign = NULL) const
   {
     if (this->compressed_sections_ == NULL)
       return false;
@@ -818,6 +861,8 @@ class Object
       {
        if (uncompressed_size != NULL)
          *uncompressed_size = p->second.size;
+       if (palign != NULL)
+         *palign = p->second.addralign;
        return true;
       }
     return false;
@@ -828,7 +873,7 @@ class Object
   // by the caller.
   const unsigned char*
   decompressed_section_contents(unsigned int shndx, section_size_type* plen,
-                               bool* is_cached);
+                               bool* is_cached, uint64_t* palign = NULL);
 
   // Discard any buffers of decompressed sections.  This is done
   // at the end of the Add_symbols task.
@@ -2201,6 +2246,11 @@ class Sized_relobj_file : public Sized_relobj<size, big_endian>
   e_type() const
   { return this->e_type_; }
 
+  // Return the EI_OSABI.
+  const Osabi&
+  osabi() const
+  { return this->osabi_; }
+
   // Return the number of symbols.  This is only valid after
   // Object::add_symbols has been called.
   unsigned int
@@ -2841,6 +2891,8 @@ class Sized_relobj_file : public Sized_relobj<size, big_endian>
 
   // General access to the ELF file.
   elfcpp::Elf_file<size, big_endian, Object> elf_file_;
+  // The EI_OSABI.
+  const Osabi osabi_;
   // Type of ELF file (ET_REL or ET_EXEC).  ET_EXEC files are allowed
   // as input files only for the --just-symbols option.
   int e_type_;