// dwp.cc -- DWARF packaging utility
-// Copyright 2012 Free Software Foundation, Inc.
+// Copyright (C) 2012-2020 Free Software Foundation, Inc.
// Written by Cary Coutant <ccoutant@google.com>.
// This file is part of dwp, the DWARF packaging utility.
// Get the name of a section.
std::string
- do_section_name(unsigned int shndx)
+ do_section_name(unsigned int shndx) const
{ return this->elf_file_.section_name(shndx); }
// Get the size of a section.
const unsigned char*
do_section_contents(unsigned int, section_size_type*, bool);
- // Return a view of the uncompressed contents of a section. Set *PLEN
- // to the size. Set *IS_NEW to true if the contents need to be deleted
- // by the caller.
- const unsigned char*
- do_decompressed_section_contents(unsigned int shndx,
- section_size_type* plen,
- bool* is_new);
-
// The following virtual functions are abstract in the base classes,
// but are not used here.
void
Sized_relobj_dwo<size, big_endian>::setup()
{
+ const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
+ const off_t shoff = this->elf_file_.shoff();
const unsigned int shnum = this->elf_file_.shnum();
+
this->set_shnum(shnum);
this->section_offsets().resize(shnum);
+
+ // Read the section headers.
+ const unsigned char* const pshdrs = this->get_view(shoff, shnum * shdr_size,
+ true, false);
+
+ // Read the section names.
+ const unsigned char* pshdrnames =
+ pshdrs + this->elf_file_.shstrndx() * shdr_size;
+ typename elfcpp::Shdr<size, big_endian> shdrnames(pshdrnames);
+ if (shdrnames.get_sh_type() != elfcpp::SHT_STRTAB)
+ this->error(_("section name section has wrong type: %u"),
+ static_cast<unsigned int>(shdrnames.get_sh_type()));
+ section_size_type section_names_size =
+ convert_to_section_size_type(shdrnames.get_sh_size());
+ const unsigned char* namesu = this->get_view(shdrnames.get_sh_offset(),
+ section_names_size, false,
+ false);
+ const char* names = reinterpret_cast<const char*>(namesu);
+
+ Compressed_section_map* compressed_sections =
+ build_compressed_section_map<size, big_endian>(
+ pshdrs, this->shnum(), names, section_names_size, this, true);
+ if (compressed_sections != NULL && !compressed_sections->empty())
+ this->set_compressed_sections(compressed_sections);
}
// Return a view of the contents of a section.
return this->get_view(loc.file_offset, *plen, true, cache);
}
-// Return a view of the uncompressed contents of a section. Set *PLEN
-// to the size. Set *IS_NEW to true if the contents need to be deleted
-// by the caller.
-
-template <int size, bool big_endian>
-const unsigned char*
-Sized_relobj_dwo<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->do_section_contents(shndx, &buffer_size,
- false);
-
- std::string sect_name = this->do_section_name(shndx);
- if (!is_prefix_of(".zdebug_", sect_name.c_str()))
- {
- *plen = buffer_size;
- *is_new = false;
- return buffer;
- }
-
- section_size_type uncompressed_size = get_uncompressed_size(buffer,
- buffer_size);
- 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->section_name(shndx).c_str());
- *plen = uncompressed_size;
- *is_new = true;
- return uncompressed_data;
-}
-
// Class Dwo_file.
Dwo_file::~Dwo_file()
this->read_unit_index(debug_cu_index, debug_shndx, output_file, false);
if (debug_tu_index > 0)
{
- if (debug_types.size() != 1)
- gold_fatal(_("%s: .dwp file must have exactly one "
+ if (debug_types.size() > 1)
+ gold_fatal(_("%s: .dwp file must have no more than one "
".debug_types.dwo section"), this->name_);
- debug_shndx[elfcpp::DW_SECT_TYPES] = debug_types[0];
+ if (debug_types.size() == 1)
+ debug_shndx[elfcpp::DW_SECT_TYPES] = debug_types[0];
+ else
+ debug_shndx[elfcpp::DW_SECT_TYPES] = 0;
this->read_unit_index(debug_tu_index, debug_shndx, output_file, true);
}
return;
: elfcpp::DW_SECT_INFO);
unsigned int info_shndx = debug_shndx[info_sect];
- gold_assert(shndx > 0 && info_shndx > 0);
+ gold_assert(shndx > 0);
section_size_type index_len;
bool index_is_new;
if (ncols == 0 || nused == 0)
return;
+ gold_assert(info_shndx > 0);
+
unsigned int nslots =
elfcpp::Swap_unaligned<32, big_endian>::readval(contents
+ 3 * sizeof(uint32_t));
{
// This output is intended to follow the GNU standards.
printf("GNU dwp %s\n", BFD_VERSION_STRING);
- printf(_("Copyright 2014 Free Software Foundation, Inc.\n"));
+ printf(_("Copyright (C) 2020 Free Software Foundation, Inc.\n"));
printf(_("\
This program is free software; you may redistribute it under the terms of\n\
the GNU General Public License version 3 or (at your option) any later version.\n\