Initial CVS checkin of gold

elfcpp/elfcpp_internal.h

@@ -0,0 +1,238 @@
+// elfcpp_internal.h -- internals for elfcpp   -*- C++ -*-
+
+// This is included by elfcpp.h, the external interface, but holds
+// information which we want to keep private.
+
+#include "elfcpp_config.h"
+
+#include <byteswap.h>
+
+#ifndef ELFCPP_INTERNAL_H
+#define ELFCPP_INTERNAL_H
+
+namespace elfcpp
+{
+
+namespace internal
+{
+
+#ifdef WORDS_BIG_ENDIAN
+const bool host_big_endian = true;
+#else
+const bool host_big_endian = false;
+#endif
+
+// Conversion routines between target and host.
+
+// Convert Elf_Half.
+
+template<bool same_endian>
+Elf_Half
+convert_half_host(Elf_Half v);
+
+template<>
+inline Elf_Half
+convert_half_host<true>(Elf_Half v)
+{
+  return v;
+}
+
+template<>
+inline Elf_Half
+convert_half_host<false>(Elf_Half v)
+{
+  return bswap_16(v);
+}
+
+template<bool big_endian>
+inline Elf_Half
+convert_half(Elf_Half v)
+{
+  return convert_half_host<big_endian == host_big_endian>(v);
+}
+
+// Convert Elf_Word.
+
+template<bool same_endian>
+Elf_Word
+convert_word_host(Elf_Word v);
+
+template<>
+inline Elf_Word
+convert_word_host<true>(Elf_Word v)
+{
+  return v;
+}
+
+template<>
+inline Elf_Word
+convert_word_host<false>(Elf_Word v)
+{
+  return bswap_32(v);
+}
+
+template<bool big_endian>
+inline Elf_Word
+convert_word(Elf_Word v)
+{
+  return convert_word_host<big_endian == host_big_endian>(v);
+}
+
+// Convert Elf_Xword.
+
+template<bool same_endian>
+Elf_Xword
+convert_xword_host(Elf_Xword v);
+
+template<>
+inline Elf_Xword
+convert_xword_host<true>(Elf_Xword v)
+{
+  return v;
+}
+
+template<>
+inline Elf_Xword
+convert_xword_host<false>(Elf_Xword v)
+{
+  return bswap_64(v);
+}
+
+template<bool big_endian>
+inline Elf_Xword
+convert_xword(Elf_Xword v)
+{
+  return convert_xword_host<big_endian == host_big_endian>(v);
+}
+
+// Convert Elf_addr.
+
+template<int size, bool same_endian>
+typename Elf_types<size>::Elf_Addr
+convert_addr_size(typename Elf_types<size>::Elf_Addr);
+
+template<>
+inline Elf_types<32>::Elf_Addr
+convert_addr_size<32, true>(Elf_types<32>::Elf_Addr v)
+{
+  return v;
+}
+
+template<>
+inline Elf_types<64>::Elf_Addr
+convert_addr_size<64, true>(Elf_types<64>::Elf_Addr v)
+{
+  return v;
+}
+
+template<>
+inline Elf_types<32>::Elf_Addr
+convert_addr_size<32, false>(Elf_types<32>::Elf_Addr v)
+{
+  return bswap_32(v);
+}
+
+template<>
+inline Elf_types<64>::Elf_Addr
+convert_addr_size<64, false>(Elf_types<64>::Elf_Addr v)
+{
+  return bswap_64(v);
+}
+
+template<int size, bool big_endian>
+inline typename Elf_types<size>::Elf_Addr
+convert_addr(typename Elf_types<size>::Elf_Addr v)
+{
+  return convert_addr_size<size, big_endian == host_big_endian>(v);
+}
+
+// Convert Elf_Off.
+
+template<int size, bool big_endian>
+inline typename Elf_types<size>::Elf_Off
+convert_off(typename Elf_types<size>::Elf_Off v)
+{
+  return convert_addr_size<size, big_endian == host_big_endian>(v);
+}
+
+// Convert Elf_WXword.
+
+template<int size, bool big_endian>
+inline typename Elf_types<size>::Elf_Off
+convert_wxword(typename Elf_types<size>::Elf_Off v)
+{
+  return convert_addr_size<size, big_endian == host_big_endian>(v);
+}
+
+// The ELF file header.
+
+template<int size>
+struct Ehdr_data
+{
+  unsigned char e_ident[EI_NIDENT];
+  Elf_Half e_type;
+  Elf_Half e_machine;
+  Elf_Word e_version;
+  typename Elf_types<size>::Elf_Addr e_entry;
+  typename Elf_types<size>::Elf_Off e_phoff;
+  typename Elf_types<size>::Elf_Off e_shoff;
+  Elf_Word e_flags;
+  Elf_Half e_ehsize;
+  Elf_Half e_phentsize;
+  Elf_Half e_phnum;
+  Elf_Half e_shentsize;
+  Elf_Half e_shnum;
+  Elf_Half e_shstrndx;
+};
+
+// An Elf section header.
+
+template<int size>
+struct Shdr_data
+{
+  Elf_Word sh_name;
+  Elf_Word sh_type;
+  typename Elf_types<size>::Elf_WXword sh_flags;
+  typename Elf_types<size>::Elf_Addr sh_addr;
+  typename Elf_types<size>::Elf_Off sh_offset;
+  typename Elf_types<size>::Elf_WXword sh_size;
+  Elf_Word sh_link;
+  Elf_Word sh_info;
+  typename Elf_types<size>::Elf_WXword sh_addralign;
+  typename Elf_types<size>::Elf_WXword sh_entsize;
+};
+
+// An ELF symbol table entry.  We use template specialization for the
+// 32-bit and 64-bit versions because the fields are in a different
+// order.
+
+template<int size>
+struct Sym_data;
+
+template<>
+struct Sym_data<32>
+{
+  Elf_Word st_name;
+  Elf_types<32>::Elf_Addr st_value;
+  Elf_Word st_size;
+  unsigned char st_info;
+  unsigned char st_other;
+  Elf_Half st_shndx;
+};
+
+template<>
+struct Sym_data<64>
+{
+  Elf_Word st_name;
+  unsigned char st_info;
+  unsigned char st_other;
+  Elf_Half st_shndx;
+  Elf_types<64>::Elf_Addr st_value;
+  Elf_Xword st_size;
+};
+
+} // End namespace internal.
+
+} // End namespace elfcpp.
+
+#endif // !defined(ELFCPP_INTERNAL_H)