deferred_layout_relocs_(),
compressed_sections_()
{
+ this->e_type_ = ehdr.get_e_type();
}
template<int size, bool big_endian>
return false;
}
+#ifdef ENABLE_THREADS
+
+// Return TRUE if this is a section whose contents will be needed in the
+// Add_symbols task.
+
+static bool
+need_decompressed_section(const char* name)
+{
+ // We will need .zdebug_str if this is not an incremental link
+ // (i.e., we are processing string merge sections).
+ if (!parameters->incremental() && strcmp(name, ".zdebug_str") == 0)
+ return true;
+
+ return false;
+}
+
+#endif
+
// Build a table for any compressed debug sections, mapping each section index
-// to the uncompressed size.
+// to the uncompressed size and (if needed) the decompressed contents.
template<int size, bool big_endian>
Compressed_section_map*
section_size_type names_size,
Sized_relobj_file<size, big_endian>* obj)
{
- Compressed_section_map* uncompressed_sizes = new Compressed_section_map();
+ Compressed_section_map* uncompressed_map = new Compressed_section_map();
const unsigned int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
const unsigned char* p = pshdrs + shdr_size;
+
for (unsigned int i = 1; i < shnum; ++i, p += shdr_size)
{
typename elfcpp::Shdr<size, big_endian> shdr(p);
obj->section_contents(i, &len, false);
uint64_t uncompressed_size = get_uncompressed_size(contents, len);
if (uncompressed_size != -1ULL)
- (*uncompressed_sizes)[i] =
- convert_to_section_size_type(uncompressed_size);
+ {
+ Compressed_section_info info;
+ info.size = convert_to_section_size_type(uncompressed_size);
+ info.contents = NULL;
+
+#ifdef ENABLE_THREADS
+ // If we're multi-threaded, it will help to decompress
+ // any sections that will be needed during the Add_symbols
+ // task, so that several decompressions can run in
+ // parallel.
+ if (parameters->options().threads())
+ {
+ unsigned char* uncompressed_data = NULL;
+ if (need_decompressed_section(name))
+ {
+ uncompressed_data = new unsigned char[uncompressed_size];
+ if (decompress_input_section(contents, len,
+ uncompressed_data,
+ uncompressed_size))
+ info.contents = uncompressed_data;
+ else
+ delete[] uncompressed_data;
+ }
+ }
+#endif
+
+ (*uncompressed_map)[i] = info;
+ }
}
}
}
- return uncompressed_sizes;
+ return uncompressed_map;
}
// Read the sections and symbols from an object file.
// just like ordinary sections.
elfcpp::Elf_Word flags = elfcpp::Swap<32, big_endian>::readval(pword);
- // Look up the group signature, which is the name of a symbol. This
- // is a lot of effort to go to to read a string. Why didn't they
- // just have the group signature point into the string table, rather
- // than indirect through a symbol?
+ // Look up the group signature, which is the name of a symbol. ELF
+ // uses a symbol name because some group signatures are long, and
+ // the name is generally already in the symbol table, so it makes
+ // sense to put the long string just once in .strtab rather than in
+ // both .strtab and .shstrtab.
// Get the appropriate symbol table header (this will normally be
// the single SHT_SYMTAB section, but in principle it need not be).
section_size_type section_names_size;
const unsigned char* symbols_data = NULL;
section_size_type symbols_size;
- section_offset_type external_symbols_offset;
const unsigned char* symbol_names_data = NULL;
section_size_type symbol_names_size;
section_names_size = gc_sd->section_names_size;
symbols_data = gc_sd->symbols_data;
symbols_size = gc_sd->symbols_size;
- external_symbols_offset = gc_sd->external_symbols_offset;
symbol_names_data = gc_sd->symbol_names_data;
symbol_names_size = gc_sd->symbol_names_size;
}
if (sd->symbols != NULL)
symbols_data = sd->symbols->data();
symbols_size = sd->symbols_size;
- external_symbols_offset = sd->external_symbols_offset;
if (sd->symbol_names != NULL)
symbol_names_data = sd->symbol_names->data();
symbol_names_size = sd->symbol_names_size;
Incremental_inputs* incremental_inputs = layout->incremental_inputs();
if (incremental_inputs != NULL
&& !discard
- && (shdr.get_sh_type() == elfcpp::SHT_PROGBITS
- || shdr.get_sh_type() == elfcpp::SHT_NOBITS
- || shdr.get_sh_type() == elfcpp::SHT_NOTE))
+ && can_incremental_update(shdr.get_sh_type()))
{
off_t sh_size = shdr.get_sh_size();
section_size_type uncompressed_size;
p != eh_frame_sections.end();
++p)
{
- gold_assert(external_symbols_offset != 0);
-
unsigned int i = *p;
const unsigned char* pshdr;
pshdr = section_headers_data + i * This::shdr_size;
template<int size, bool big_endian>
unsigned int
-Sized_relobj_file<size, big_endian>::local_plt_offset(unsigned int symndx) const
+Sized_relobj_file<size, big_endian>::do_local_plt_offset(
+ unsigned int symndx) const
{
typename Local_plt_offsets::const_iterator p =
this->local_plt_offsets_.find(symndx);
*used = count;
}
+// Return a view of the decompressed contents of a section. Set *PLEN
+// to the size. Set *IS_NEW to true if the contents need to be freed
+// by the caller.
+
+template<int size, bool big_endian>
+const unsigned char*
+Sized_relobj_file<size, big_endian>::do_decompressed_section_contents(
+ unsigned int shndx,
+ section_size_type* plen,
+ bool* is_new)
+{
+ section_size_type buffer_size;
+ const unsigned char* buffer = this->section_contents(shndx, &buffer_size,
+ false);
+
+ if (this->compressed_sections_ == NULL)
+ {
+ *plen = buffer_size;
+ *is_new = false;
+ return buffer;
+ }
+
+ Compressed_section_map::const_iterator p =
+ this->compressed_sections_->find(shndx);
+ if (p == this->compressed_sections_->end())
+ {
+ *plen = buffer_size;
+ *is_new = false;
+ return buffer;
+ }
+
+ section_size_type uncompressed_size = p->second.size;
+ if (p->second.contents != NULL)
+ {
+ *plen = uncompressed_size;
+ *is_new = false;
+ return p->second.contents;
+ }
+
+ unsigned char* uncompressed_data = new unsigned char[uncompressed_size];
+ if (!decompress_input_section(buffer,
+ buffer_size,
+ uncompressed_data,
+ uncompressed_size))
+ this->error(_("could not decompress section %s"),
+ this->do_section_name(shndx).c_str());
+
+ // We could cache the results in p->second.contents and store
+ // false in *IS_NEW, but build_compressed_section_map() would
+ // have done so if it had expected it to be profitable. If
+ // we reach this point, we expect to need the contents only
+ // once in this pass.
+ *plen = uncompressed_size;
+ *is_new = true;
+ return uncompressed_data;
+}
+
+// Discard any buffers of uncompressed sections. This is done
+// at the end of the Add_symbols task.
+
+template<int size, bool big_endian>
+void
+Sized_relobj_file<size, big_endian>::do_discard_decompressed_sections()
+{
+ if (this->compressed_sections_ == NULL)
+ return;
+
+ for (Compressed_section_map::iterator p = this->compressed_sections_->begin();
+ p != this->compressed_sections_->end();
+ ++p)
+ {
+ if (p->second.contents != NULL)
+ {
+ delete[] p->second.contents;
+ p->second.contents = NULL;
+ }
+ }
+}
+
// Input_objects methods.
// Add a regular relocatable object to the list. Return false if this
projects / binutils-gdb.git / blobdiff