aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--elfcpp/ChangeLog7
-rw-r--r--elfcpp/elfcpp.h61
-rw-r--r--elfcpp/elfcpp_internal.h10
3 files changed, 78 insertions, 0 deletions
diff --git a/elfcpp/ChangeLog b/elfcpp/ChangeLog
index 75681b1..3342ac9 100644
--- a/elfcpp/ChangeLog
+++ b/elfcpp/ChangeLog
@@ -1,5 +1,12 @@
2015-04-08 H.J. Lu <hongjiu.lu@intel.com>
+ * elfcpp.h (Elf_sizes): Add chdr_size.
+ (Chdr): New.
+ (Chdr_write): Likewise.
+ * elfcpp_internal.h (Chdr_data): Likewise.
+
+2015-04-08 H.J. Lu <hongjiu.lu@intel.com>
+
* elfcpp.h (SHF): Add SHF_COMPRESSED.
(ELFCOMPRESS_ZLIB): New.
(ELFCOMPRESS_LOOS): Likewise.
diff --git a/elfcpp/elfcpp.h b/elfcpp/elfcpp.h
index f5a3efc..722984e 100644
--- a/elfcpp/elfcpp.h
+++ b/elfcpp/elfcpp.h
@@ -1009,6 +1009,8 @@ struct Elf_sizes
static const int phdr_size = sizeof(internal::Phdr_data<size>);
// Size of ELF section header.
static const int shdr_size = sizeof(internal::Shdr_data<size>);
+ // Size of ELF compression header.
+ static const int chdr_size = sizeof(internal::Chdr_data<size>);
// Size of ELF symbol table entry.
static const int sym_size = sizeof(internal::Sym_data<size>);
// Sizes of ELF reloc entries.
@@ -1284,6 +1286,65 @@ class Shdr_write
internal::Shdr_data<size>* p_;
};
+// Accessor class for an ELF compression header.
+
+template<int size, bool big_endian>
+class Chdr
+{
+ public:
+ Chdr(const unsigned char* p)
+ : p_(reinterpret_cast<const internal::Chdr_data<size>*>(p))
+ { }
+
+ template<typename File>
+ Chdr(File* file, typename File::Location loc)
+ : p_(reinterpret_cast<const internal::Chdr_data<size>*>(
+ file->view(loc.file_offset, loc.data_size).data()))
+ { }
+
+ typename Elf_types<size>::Elf_WXword
+ get_ch_type() const
+ { return Convert<size, big_endian>::convert_host(this->p_->ch_type); }
+
+ typename Elf_types<size>::Elf_WXword
+ get_ch_size() const
+ { return Convert<size, big_endian>::convert_host(this->p_->ch_size); }
+
+ typename Elf_types<size>::Elf_WXword
+ get_ch_addralign() const
+ { return
+ Convert<size, big_endian>::convert_host(this->p_->ch_addralign); }
+
+ private:
+ const internal::Chdr_data<size>* p_;
+};
+
+// Write class for an ELF compression header.
+
+template<int size, bool big_endian>
+class Chdr_write
+{
+ public:
+ Chdr_write(unsigned char* p)
+ : p_(reinterpret_cast<internal::Chdr_data<size>*>(p))
+ { }
+
+ void
+ put_ch_type(typename Elf_types<size>::Elf_WXword v)
+ { this->p_->ch_type = Convert<size, big_endian>::convert_host(v); }
+
+ void
+ put_ch_size(typename Elf_types<size>::Elf_WXword v)
+ { this->p_->ch_size = Convert<size, big_endian>::convert_host(v); }
+
+ void
+ put_ch_addralign(typename Elf_types<size>::Elf_WXword v)
+ { this->p_->ch_addralign = Convert<size, big_endian>::convert_host(v); }
+
+ private:
+ internal::Chdr_data<size>* p_;
+};
+
// Accessor class for an ELF segment header.
template<int size, bool big_endian>
diff --git a/elfcpp/elfcpp_internal.h b/elfcpp/elfcpp_internal.h
index d800f7a..424a1f6 100644
--- a/elfcpp/elfcpp_internal.h
+++ b/elfcpp/elfcpp_internal.h
@@ -79,6 +79,16 @@ struct Shdr_data
typename Elf_types<size>::Elf_WXword sh_entsize;
};
+// An ELF compression header.
+
+template<int size>
+struct Chdr_data
+{
+ typename Elf_types<size>::Elf_WXword ch_type;
+ typename Elf_types<size>::Elf_WXword ch_size;
+ typename Elf_types<size>::Elf_WXword ch_addralign;
+};
+
// An ELF segment header. We use template specialization for the
// 32-bit and 64-bit versions because the fields are in a different
// order.