// object.cc -- support for an object file for linking in gold
-// Copyright (C) 2006-2015 Free Software Foundation, Inc.
+// Copyright (C) 2006-2017 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
unsigned int shndx, section_offset_type offset,
section_size_type length,
section_offset_type output_offset) {
- if (this->object_merge_map_ == NULL)
- {
- this->object_merge_map_ = new Object_merge_map();
- }
-
- this->object_merge_map_->add_mapping(output_data, shndx, offset, length,
- output_offset);
+ Object_merge_map* object_merge_map = this->get_or_create_merge_map();
+ object_merge_map->add_mapping(output_data, shndx, offset, length, output_offset);
}
bool
return object_merge_map->get_output_offset(shndx, offset, poutput);
}
-bool
-Relobj::is_merge_section_for(const Output_section_data* output_data,
- unsigned int shndx) const {
+const Output_section_data*
+Relobj::find_merge_section(unsigned int shndx) const {
Object_merge_map* object_merge_map = this->object_merge_map_;
if (object_merge_map == NULL)
- return false;
- return object_merge_map->is_merge_section_for(output_data, shndx);
-
+ return NULL;
+ return object_merge_map->find_merge_section(shndx);
}
// To copy the symbols data read from the file to a local data structure.
layout->incremental_inputs()->set_reloc_count(rindex);
}
+Object_merge_map*
+Relobj::get_or_create_merge_map()
+{
+ if (!this->object_merge_map_)
+ this->object_merge_map_ = new Object_merge_map();
+ return this->object_merge_map_;
+}
+
// Class Sized_relobj.
// Iterate over local symbols, calling a visitor class V for each GOT offset
unsigned int nsyms = this->local_symbol_count();
for (unsigned int i = 0; i < nsyms; i++)
{
- Local_got_offsets::const_iterator p = this->local_got_offsets_.find(i);
+ Local_got_entry_key key(i, 0);
+ Local_got_offsets::const_iterator p = this->local_got_offsets_.find(key);
if (p != this->local_got_offsets_.end())
{
const Got_offset_list* got_offsets = p->second;
discarded_eh_frame_shndx_(-1U),
is_deferred_layout_(false),
deferred_layout_(),
- deferred_layout_relocs_()
+ deferred_layout_relocs_(),
+ output_views_(NULL)
{
this->e_type_ = ehdr.get_e_type();
}
// Return TRUE if this is a section whose contents will be needed in the
// Add_symbols task. This function is only called for sections that have
-// already passed the test in is_compressed_debug_section(), so we know
-// that the section name begins with ".zdebug".
+// already passed the test in is_compressed_debug_section() and the debug
+// section name prefix, ".debug"/".zdebug", has been skipped.
static bool
need_decompressed_section(const char* name)
{
- // Skip over the ".zdebug" and a quick check for the "_".
- name += 7;
if (*name++ != '_')
return false;
}
const char* name = names + shdr.get_sh_name();
- if (is_compressed_debug_section(name))
+ bool is_compressed = ((shdr.get_sh_flags()
+ & elfcpp::SHF_COMPRESSED) != 0);
+ bool is_zcompressed = (!is_compressed
+ && is_compressed_debug_section(name));
+
+ if (is_zcompressed || is_compressed)
{
section_size_type len;
const unsigned char* contents =
obj->section_contents(i, &len, false);
- uint64_t uncompressed_size = get_uncompressed_size(contents, len);
+ uint64_t uncompressed_size;
+ if (is_zcompressed)
+ {
+ // Skip over the ".zdebug" prefix.
+ name += 7;
+ uncompressed_size = get_uncompressed_size(contents, len);
+ }
+ else
+ {
+ // Skip over the ".debug" prefix.
+ name += 6;
+ elfcpp::Chdr<size, big_endian> chdr(contents);
+ uncompressed_size = chdr.get_ch_size();
+ }
Compressed_section_info info;
info.size = convert_to_section_size_type(uncompressed_size);
+ info.flag = shdr.get_sh_flags();
info.contents = NULL;
if (uncompressed_size != -1ULL)
{
uncompressed_data = new unsigned char[uncompressed_size];
if (decompress_input_section(contents, len,
uncompressed_data,
- uncompressed_size))
+ uncompressed_size,
+ size, big_endian,
+ shdr.get_sh_flags()))
info.contents = uncompressed_data;
else
delete[] uncompressed_data;
if (this->find_eh_frame(pshdrs, names, sd->section_names_size))
this->has_eh_frame_ = true;
- if (memmem(names, sd->section_names_size, ".zdebug_", 8) != NULL)
- {
- Compressed_section_map* compressed_sections =
- build_compressed_section_map<size, big_endian>(
- pshdrs, this->shnum(), names, sd->section_names_size, this, true);
- if (compressed_sections != NULL)
- this->set_compressed_sections(compressed_sections);
- }
+ Compressed_section_map* compressed_sections =
+ build_compressed_section_map<size, big_endian>(
+ pshdrs, this->shnum(), names, sd->section_names_size, this, true);
+ if (compressed_sections != NULL)
+ this->set_compressed_sections(compressed_sections);
return (this->has_eh_frame_
|| (!parameters->options().relocatable()
&& parameters->options().gdb_index()
- && (memmem(names, sd->section_names_size, "debug_info", 12) == 0
- || memmem(names, sd->section_names_size, "debug_types",
- 13) == 0)));
+ && (memmem(names, sd->section_names_size, "debug_info", 11) == 0
+ || memmem(names, sd->section_names_size,
+ "debug_types", 12) == 0)));
}
// Read the sections and symbols from an object file.
|| shdr.get_sh_type() == elfcpp::SHT_INIT_ARRAY
|| shdr.get_sh_type() == elfcpp::SHT_FINI_ARRAY)
{
- symtab->gc()->worklist().push(Section_id(this, i));
+ symtab->gc()->worklist().push_back(Section_id(this, i));
}
// If the section name XXX can be represented as a C identifier
// it cannot be discarded if there are references to
// Loop over the local symbols.
const Output_sections& out_sections(this->output_sections());
+ std::vector<Address>& out_section_offsets(this->section_offsets());
unsigned int shnum = this->shnum();
unsigned int count = 0;
unsigned int dyncount = 0;
bool strip_all = parameters->options().strip_all();
bool discard_all = parameters->options().discard_all();
bool discard_locals = parameters->options().discard_locals();
+ bool discard_sec_merge = parameters->options().discard_sec_merge();
for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size)
{
elfcpp::Sym<size, big_endian> sym(psyms);
// Decide whether this symbol should go into the output file.
- if ((shndx < shnum && out_sections[shndx] == NULL)
- || shndx == this->discarded_eh_frame_shndx_)
+ if (is_ordinary
+ && ((shndx < shnum && out_sections[shndx] == NULL)
+ || shndx == this->discarded_eh_frame_shndx_))
{
lv.set_no_output_symtab_entry();
gold_assert(!lv.needs_output_dynsym_entry());
continue;
}
+ // By default, discard temporary local symbols in merge sections.
// If --discard-locals option is used, discard all temporary local
// symbols. These symbols start with system-specific local label
// prefixes, typically .L for ELF system. We want to be compatible
// - the symbol has a name.
//
// We do not discard a symbol if it needs a dynamic symbol entry.
- if (discard_locals
+ if ((discard_locals
+ || (discard_sec_merge
+ && is_ordinary
+ && out_section_offsets[shndx] == invalid_address))
&& sym.get_st_type() != elfcpp::STT_FILE
&& !lv.needs_output_dynsym_entry()
&& lv.may_be_discarded_from_output_symtab()
elfcpp::Sym<size, big_endian> isym(psyms);
Symbol_value<size>& lv(this->local_values_[i]);
+ typename elfcpp::Elf_types<size>::Elf_Addr sym_value = lv.value(this, 0);
bool is_ordinary;
unsigned int st_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
gold_assert(st_shndx < out_sections.size());
if (out_sections[st_shndx] == NULL)
continue;
+ // In relocatable object files symbol values are section relative.
+ if (parameters->options().relocatable())
+ sym_value -= out_sections[st_shndx]->address();
st_shndx = out_sections[st_shndx]->out_shndx();
if (st_shndx >= elfcpp::SHN_LORESERVE)
{
gold_assert(isym.get_st_name() < strtab_size);
const char* name = pnames + isym.get_st_name();
osym.put_st_name(sympool->get_offset(name));
- osym.put_st_value(this->local_values_[i].value(this, 0));
+ osym.put_st_value(sym_value);
osym.put_st_size(isym.get_st_size());
osym.put_st_info(isym.get_st_info());
osym.put_st_other(isym.get_st_other());
gold_assert(isym.get_st_name() < strtab_size);
const char* name = pnames + isym.get_st_name();
osym.put_st_name(dynpool->get_offset(name));
- osym.put_st_value(this->local_values_[i].value(this, 0));
+ osym.put_st_value(sym_value);
osym.put_st_size(isym.get_st_size());
osym.put_st_info(isym.get_st_info());
osym.put_st_other(isym.get_st_other());
if (!decompress_input_section(buffer,
buffer_size,
uncompressed_data,
- uncompressed_size))
+ uncompressed_size,
+ elfsize(),
+ is_big_endian(),
+ p->second.flag))
this->error(_("could not decompress section %s"),
this->do_section_name(shndx).c_str());
Dynobj* dynobj = static_cast<Dynobj*>(obj);
const char* soname = dynobj->soname();
- std::pair<Unordered_set<std::string>::iterator, bool> ins =
- this->sonames_.insert(soname);
+ Unordered_map<std::string, Object*>::value_type val(soname, obj);
+ std::pair<Unordered_map<std::string, Object*>::iterator, bool> ins =
+ this->sonames_.insert(val);
if (!ins.second)
{
// We have already seen a dynamic object with this soname.
+ // If any instances of this object on the command line have
+ // the --no-as-needed flag, make sure the one we keep is
+ // marked so.
+ if (!obj->as_needed())
+ {
+ gold_assert(ins.first->second != NULL);
+ ins.first->second->clear_as_needed();
+ }
return false;
}
const unsigned char*);
#endif
+#ifdef HAVE_TARGET_32_LITTLE
+template
+Compressed_section_map*
+build_compressed_section_map<32, false>(const unsigned char*, unsigned int,
+ const char*, section_size_type,
+ Object*, bool);
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+Compressed_section_map*
+build_compressed_section_map<32, true>(const unsigned char*, unsigned int,
+ const char*, section_size_type,
+ Object*, bool);
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+Compressed_section_map*
+build_compressed_section_map<64, false>(const unsigned char*, unsigned int,
+ const char*, section_size_type,
+ Object*, bool);
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+Compressed_section_map*
+build_compressed_section_map<64, true>(const unsigned char*, unsigned int,
+ const char*, section_size_type,
+ Object*, bool);
+#endif
+
} // End namespace gold.
projects / deliverable / binutils-gdb.git / blobdiff