More dynamic object support, initial scripting support.
This commit is contained in:
Ian Lance Taylor
parent
6c73cbb1d9
commit
dbe717effb
31 changed files with 3698 additions and 373 deletions
326
elfcpp/elfcpp.h
326
elfcpp/elfcpp.h
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@ -530,6 +530,138 @@ elf_r_info<64>(unsigned int s, unsigned int t)
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return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
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}
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// Dynamic tags found in the PT_DYNAMIC segment.
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enum DT
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{
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DT_NULL = 0,
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DT_NEEDED = 1,
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DT_PLTRELSZ = 2,
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DT_PLTGOT = 3,
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DT_HASH = 4,
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DT_STRTAB = 5,
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DT_SYMTAB = 6,
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DT_RELA = 7,
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DT_RELASZ = 8,
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DT_RELAENT = 9,
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DT_STRSZ = 10,
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DT_SYMENT = 11,
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DT_INIT = 12,
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DT_FINI = 13,
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DT_SONAME = 14,
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DT_RPATH = 15,
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DT_SYMBOLIC = 16,
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DT_REL = 17,
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DT_RELSZ = 18,
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DT_RELENT = 19,
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DT_PLTREL = 20,
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DT_DEBUG = 21,
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DT_TEXTREL = 22,
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DT_JMPREL = 23,
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DT_BIND_NOW = 24,
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DT_INIT_ARRAY = 25,
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DT_FINI_ARRAY = 26,
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DT_INIT_ARRAYSZ = 27,
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DT_FINI_ARRAYSZ = 28,
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DT_RUNPATH = 29,
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DT_FLAGS = 30,
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DT_ENCODING = 32,
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DT_PREINIT_ARRAY = 33,
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DT_PREINIT_ARRAYSZ = 33,
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DT_LOOS = 0x6000000d,
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DT_HIOS = 0x6ffff000,
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DT_LOPROC = 0x70000000,
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DT_HIPROC = 0x7fffffff,
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// The remaining values are extensions used by GNU or Solaris.
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DT_VALRNGLO = 0x6ffffd00,
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DT_GNU_PRELINKED = 0x6ffffdf5,
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DT_GNU_CONFLICTSZ = 0x6ffffdf6,
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DT_GNU_LIBLISTSZ = 0x6ffffdf7,
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DT_CHECKSUM = 0x6ffffdf8,
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DT_PLTPADSZ = 0x6ffffdf9,
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DT_MOVEENT = 0x6ffffdfa,
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DT_MOVESZ = 0x6ffffdfb,
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DT_FEATURE = 0x6ffffdfc,
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DT_POSFLAG_1 = 0x6ffffdfd,
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DT_SYMINSZ = 0x6ffffdfe,
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DT_SYMINENT = 0x6ffffdff,
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DT_VALRNGHI = 0x6ffffdff,
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DT_ADDRRNGLO = 0x6ffffe00,
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DT_GNU_HASH = 0x6ffffef5,
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DT_TLSDESC_PLT = 0x6ffffef6,
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DT_TLSDESC_GOT = 0x6ffffef7,
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DT_GNU_CONFLICT = 0x6ffffef8,
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DT_GNU_LIBLIST = 0x6ffffef9,
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DT_CONFIG = 0x6ffffefa,
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DT_DEPAUDIT = 0x6ffffefb,
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DT_AUDIT = 0x6ffffefc,
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DT_PLTPAD = 0x6ffffefd,
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DT_MOVETAB = 0x6ffffefe,
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DT_SYMINFO = 0x6ffffeff,
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DT_ADDRRNGHI = 0x6ffffeff,
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DT_RELACOUNT = 0x6ffffff9,
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DT_RELCOUNT = 0x6ffffffa,
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DT_FLAGS_1 = 0x6ffffffb,
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DT_VERDEF = 0x6ffffffc,
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DT_VERDEFNUM = 0x6ffffffd,
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DT_VERNEED = 0x6ffffffe,
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DT_VERNEEDNUM = 0x6fffffff,
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DT_VERSYM = 0x6ffffff0,
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DT_AUXILIARY = 0x7ffffffd,
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DT_USED = 0x7ffffffe,
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DT_FILTER = 0x7fffffff
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};
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// Flags found in the DT_FLAGS dynamic element.
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enum DF
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{
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DF_ORIGIN = 0x1,
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DF_SYMBOLIC = 0x2,
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DF_TEXTREL = 0x4,
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DF_BIND_NOW = 0x8,
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DF_STATIC_TLS = 0x10
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};
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// Version numbers which appear in the vd_version field of a Verdef
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// structure.
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const int VER_DEF_NONE = 0;
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const int VER_DEF_CURRENT = 1;
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// Version numbers which appear in the vn_version field of a Verneed
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// structure.
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const int VER_NEED_NONE = 0;
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const int VER_NEED_CURRENT = 1;
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// Bit flags which appear in vd_flags of Verdef and vna_flags of
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// Vernaux.
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const int VER_FLG_BASE = 0x1;
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const int VER_FLG_WEAK = 0x2;
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// Special constants found in the SHT_GNU_versym entries.
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const int VER_NDX_LOCAL = 0;
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const int VER_NDX_GLOBAL = 1;
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// A SHT_GNU_versym section holds 16-bit words. This bit is set if
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// the symbol is hidden and can only be seen when referenced using an
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// explicit version number. This is a GNU extension.
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const int VERSYM_HIDDEN = 0x8000;
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// This is the mask for the rest of the data in a word read from a
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// SHT_GNU_versym section.
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const int VERSYM_VERSION = 0x7fff;
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} // End namespace elfcpp.
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// Include internal details after defining the types.
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@ -558,6 +690,8 @@ struct Elf_sizes
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// Sizes of ELF reloc entries.
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static const int rel_size = sizeof(internal::Rel_data<size>);
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static const int rela_size = sizeof(internal::Rela_data<size>);
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// Size of ELF dynamic entry.
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static const int dyn_size = sizeof(internal::Dyn_data<size>);
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};
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// Accessor class for the ELF file header.
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@ -1087,6 +1221,198 @@ class Rela
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const internal::Rela_data<size>* p_;
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};
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// Accessor classes for entries in the ELF SHT_DYNAMIC section aka
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// PT_DYNAMIC segment.
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template<int size, bool big_endian>
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class Dyn
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{
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public:
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Dyn(const unsigned char* p)
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: p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
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{ }
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template<typename File>
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Dyn(File* file, typename File::Location loc)
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: p_(reinterpret_cast<const internal::Dyn_data<size>*>(
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file->view(loc.file_offset, loc.data_size).data()))
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{ }
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typename Elf_types<size>::Elf_Swxword
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get_d_tag() const
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{ return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
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typename Elf_types<size>::Elf_WXword
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get_d_val() const
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{ return Convert<size, big_endian>::convert_host(this->p_->d_val); }
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typename Elf_types<size>::Elf_Addr
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get_d_ptr() const
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{ return Convert<size, big_endian>::convert_host(this->p_->d_val); }
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private:
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const internal::Dyn_data<size>* p_;
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};
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// Accessor classes for entries in the ELF SHT_GNU_verdef section.
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template<int size, bool big_endian>
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class Verdef
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{
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public:
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Verdef(const unsigned char* p)
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: p_(reinterpret_cast<const internal::Verdef_data*>(p))
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{ }
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template<typename File>
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Verdef(File* file, typename File::Location loc)
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: p_(reinterpret_cast<const internal::Verdef_data*>(
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file->view(loc.file_offset, loc.data_size).data()))
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{ }
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Elf_Half
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get_vd_version() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
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Elf_Half
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get_vd_flags() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
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Elf_Half
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get_vd_ndx() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
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Elf_Half
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get_vd_cnt() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
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Elf_Word
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get_vd_hash() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
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Elf_Word
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get_vd_aux() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
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Elf_Word
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get_vd_next() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
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private:
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const internal::Verdef_data* p_;
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};
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// Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
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// section.
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template<int size, bool big_endian>
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class Verdaux
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{
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public:
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Verdaux(const unsigned char* p)
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: p_(reinterpret_cast<const internal::Verdaux_data*>(p))
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{ }
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template<typename File>
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Verdaux(File* file, typename File::Location loc)
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: p_(reinterpret_cast<const internal::Verdaux_data*>(
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file->view(loc.file_offset, loc.data_size).data()))
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{ }
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Elf_Word
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get_vda_name() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
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Elf_Word
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get_vda_next() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
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private:
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const internal::Verdaux_data* p_;
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};
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// Accessor classes for entries in the ELF SHT_GNU_verneed section.
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template<int size, bool big_endian>
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class Verneed
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{
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public:
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Verneed(const unsigned char* p)
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: p_(reinterpret_cast<const internal::Verneed_data*>(p))
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{ }
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template<typename File>
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Verneed(File* file, typename File::Location loc)
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: p_(reinterpret_cast<const internal::Verneed_data*>(
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file->view(loc.file_offset, loc.data_size).data()))
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{ }
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Elf_Half
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get_vn_version() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
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Elf_Half
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get_vn_cnt() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
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Elf_Word
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get_vn_file() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
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Elf_Word
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get_vn_aux() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
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Elf_Word
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get_vn_next() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
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private:
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const internal::Verneed_data* p_;
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};
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// Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
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// section.
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template<int size, bool big_endian>
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class Vernaux
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{
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public:
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Vernaux(const unsigned char* p)
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: p_(reinterpret_cast<const internal::Vernaux_data*>(p))
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{ }
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template<typename File>
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Vernaux(File* file, typename File::Location loc)
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: p_(reinterpret_cast<const internal::Vernaux_data*>(
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file->view(loc.file_offset, loc.data_size).data()))
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{ }
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Elf_Word
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get_vna_hash() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
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Elf_Half
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get_vna_flags() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
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Elf_Half
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get_vna_other() const
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{ return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
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Elf_Word
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get_vna_name() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
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Elf_Word
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get_vna_next() const
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{ return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
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private:
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const internal::Vernaux_data* p_;
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};
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} // End namespace elfcpp.
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#endif // !defined(ELFPCP_H)
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