// archive.cc -- archive support for gold
-// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
const char Archive::arfmag[2] = { '`', '\n' };
-Archive::Archive(const std::string& aname, Input_file* ainput_file,
- bool is_a_thin_archive, Dirsearch* dirpath, Task* task)
- : name_(aname), input_file_(ainput_file), armap_(), armap_names_(),
+Archive::Archive(const std::string& name, Input_file* input_file,
+ bool is_thin_archive, Dirsearch* dirpath, Task* task)
+ : name_(name), input_file_(input_file), armap_(), armap_names_(),
extended_names_(), armap_checked_(), seen_offsets_(), members_(),
- is_thin_archive_(is_a_thin_archive), included_member_(false),
+ is_thin_archive_(is_thin_archive), included_member_(false),
nested_archives_(), dirpath_(dirpath), task_(task), num_members_(0)
{
this->no_export_ =
- parameters->options().check_excluded_libs(ainput_file->found_name());
+ parameters->options().check_excluded_libs(input_file->found_name());
}
// Set up the archive: read the symbol map and the extended name
*ps = '\0';
errno = 0;
- char* hend;
- off_t member_size = strtol(size_string, &hend, 10);
- if (*hend != '\0'
+ char* end;
+ off_t member_size = strtol(size_string, &end, 10);
+ if (*end != '\0'
|| member_size < 0
|| (member_size == LONG_MAX && errno == ERANGE))
{
else if (hdr->ar_name[1] == ' ')
{
// This is the symbol table.
- pname->clear();
+ if (!pname->empty())
+ pname->clear();
}
else if (hdr->ar_name[1] == '/')
{
else
{
errno = 0;
- long x = strtol(hdr->ar_name + 1, &hend, 10);
+ long x = strtol(hdr->ar_name + 1, &end, 10);
long y = 0;
- if (*hend == ':')
- y = strtol(hend + 1, &hend, 10);
- if (*hend != ' '
+ if (*end == ':')
+ y = strtol(end + 1, &end, 10);
+ if (*end != ' '
|| x < 0
|| (x == LONG_MAX && errno == ERANGE)
|| static_cast<size_t>(x) >= this->extended_names_.size())
return this->input_file_->file().filesize() - off;
}
- const char* name_start = this->extended_names_.data() + x;
- const char* name_end = strchr(name_start, '\n');
- if (static_cast<size_t>(name_end - name_start) > this->extended_names_.size()
+ const char* name = this->extended_names_.data() + x;
+ const char* name_end = strchr(name, '\n');
+ if (static_cast<size_t>(name_end - name) > this->extended_names_.size()
|| name_end[-1] != '/')
{
gold_error(_("%s: bad extended name entry at header %zu"),
this->name().c_str(), static_cast<size_t>(off));
return this->input_file_->file().filesize() - off;
}
- pname->assign(name_start, name_end - 1 - name_start);
+ pname->assign(name, name_end - 1 - name);
if (nested_off != NULL)
*nested_off = y;
}
// to the name of the archive member. Return TRUE on success.
bool
-Archive::get_file_and_offset(off_t off, Input_file** in_file, off_t* memoff,
+Archive::get_file_and_offset(off_t off, Input_file** input_file, off_t* memoff,
off_t* memsize, std::string* member_name)
{
off_t nested_off;
*memsize = this->read_header(off, false, member_name, &nested_off);
- *in_file = this->input_file_;
+ *input_file = this->input_file_;
*memoff = off + static_cast<off_t>(sizeof(Archive_header));
if (!this->is_thin_archive_)
new Input_file_argument(member_name->c_str(),
Input_file_argument::INPUT_FILE_TYPE_FILE,
"", false, parameters->options());
- *in_file = new Input_file(input_file_arg);
+ *input_file = new Input_file(input_file_arg);
int dummy = 0;
- if (!(*in_file)->open(*this->dirpath_, this->task_, &dummy))
+ if (!(*input_file)->open(*this->dirpath_, this->task_, &dummy))
return false;
- arch = new Archive(*member_name, *in_file, false, this->dirpath_,
+ arch = new Archive(*member_name, *input_file, false, this->dirpath_,
this->task_);
arch->setup();
std::pair<Nested_archive_table::iterator, bool> ins =
this->nested_archives_.insert(std::make_pair(*member_name, arch));
gold_assert(ins.second);
}
- return arch->get_file_and_offset(nested_off, in_file, memoff,
+ return arch->get_file_and_offset(nested_off, input_file, memoff,
memsize, member_name);
}
new Input_file_argument(member_name->c_str(),
Input_file_argument::INPUT_FILE_TYPE_FILE,
"", false, this->input_file_->options());
- *in_file = new Input_file(input_file_arg);
+ *input_file = new Input_file(input_file_arg);
int dummy = 0;
- if (!(*in_file)->open(*this->dirpath_, this->task_, &dummy))
+ if (!(*input_file)->open(*this->dirpath_, this->task_, &dummy))
return false;
*memoff = 0;
- *memsize = (*in_file)->file().filesize();
+ *memsize = (*input_file)->file().filesize();
return true;
}
{
*punconfigured = false;
- Input_file* in_file;
+ Input_file* input_file;
off_t memoff;
off_t memsize;
std::string member_name;
- if (!this->get_file_and_offset(off, &in_file, &memoff, &memsize,
+ if (!this->get_file_and_offset(off, &input_file, &memoff, &memsize,
&member_name))
return NULL;
if (parameters->options().has_plugins())
{
- Object* obj = parameters->options().plugins()->claim_file(in_file,
+ Object* obj = parameters->options().plugins()->claim_file(input_file,
memoff,
memsize);
if (obj != NULL)
const unsigned char* ehdr;
int read_size;
- if (!is_elf_object(in_file, memoff, &ehdr, &read_size))
+ if (!is_elf_object(input_file, memoff, &ehdr, &read_size))
{
gold_error(_("%s: member at %zu is not an ELF object"),
this->name().c_str(), static_cast<size_t>(off));
Object *obj = make_elf_object((std::string(this->input_file_->filename())
+ "(" + member_name + ")"),
- in_file, memoff, ehdr, read_size,
+ input_file, memoff, ehdr, read_size,
punconfigured);
if (obj == NULL)
return NULL;
this->members_[off] = member;
}
+Archive::Should_include
+Archive::should_include_member(Symbol_table* symtab, const char* sym_name,
+ Symbol** symp, std::string* why, char** tmpbufp,
+ size_t* tmpbuflen)
+{
+ // In an object file, and therefore in an archive map, an
+ // '@' in the name separates the symbol name from the
+ // version name. If there are two '@' characters, this is
+ // the default version.
+ char* tmpbuf = *tmpbufp;
+ const char* ver = strchr(sym_name, '@');
+ bool def = false;
+ if (ver != NULL)
+ {
+ size_t symlen = ver - sym_name;
+ if (symlen + 1 > *tmpbuflen)
+ {
+ tmpbuf = static_cast<char*>(xrealloc(tmpbuf, symlen + 1));
+ *tmpbufp = tmpbuf;
+ *tmpbuflen = symlen + 1;
+ }
+ memcpy(tmpbuf, sym_name, symlen);
+ tmpbuf[symlen] = '\0';
+ sym_name = tmpbuf;
+
+ ++ver;
+ if (*ver == '@')
+ {
+ ++ver;
+ def = true;
+ }
+ }
+
+ Symbol* sym = symtab->lookup(sym_name, ver);
+ if (def
+ && ver != NULL
+ && (sym == NULL
+ || !sym->is_undefined()
+ || sym->binding() == elfcpp::STB_WEAK))
+ sym = symtab->lookup(sym_name, NULL);
+
+ *symp = sym;
+
+ if (sym == NULL)
+ {
+ // Check whether the symbol was named in a -u option.
+ if (!parameters->options().is_undefined(sym_name))
+ return Archive::SHOULD_INCLUDE_UNKNOWN;
+ else
+ {
+ *why = "-u ";
+ *why += sym_name;
+ }
+ }
+ else if (!sym->is_undefined())
+ return Archive::SHOULD_INCLUDE_NO;
+ else if (sym->binding() == elfcpp::STB_WEAK)
+ return Archive::SHOULD_INCLUDE_UNKNOWN;
+
+ return Archive::SHOULD_INCLUDE_YES;
+}
+
// Select members from the archive and add them to the link. We walk
// through the elements in the archive map, and look each one up in
// the symbol table. If it exists as a strong undefined symbol, we
const char* sym_name = (this->armap_names_.data()
+ this->armap_[i].name_offset);
- // In an object file, and therefore in an archive map, an
- // '@' in the name separates the symbol name from the
- // version name. If there are two '@' characters, this is
- // the default version.
- const char* ver = strchr(sym_name, '@');
- bool def = false;
- if (ver != NULL)
- {
- size_t symlen = ver - sym_name;
- if (symlen + 1 > tmpbuflen)
- {
- tmpbuf = static_cast<char*>(realloc(tmpbuf, symlen + 1));
- tmpbuflen = symlen + 1;
- }
- memcpy(tmpbuf, sym_name, symlen);
- tmpbuf[symlen] = '\0';
- sym_name = tmpbuf;
-
- ++ver;
- if (*ver == '@')
- {
- ++ver;
- def = true;
- }
- }
+ Symbol* sym;
+ std::string why;
+ Archive::Should_include t =
+ Archive::should_include_member(symtab, sym_name, &sym, &why,
+ &tmpbuf, &tmpbuflen);
- Symbol* sym = symtab->lookup(sym_name, ver);
- if (def
- && (sym == NULL
- || !sym->is_undefined()
- || sym->binding() == elfcpp::STB_WEAK))
- sym = symtab->lookup(sym_name, NULL);
+ if (t == Archive::SHOULD_INCLUDE_NO
+ || t == Archive::SHOULD_INCLUDE_YES)
+ this->armap_checked_[i] = true;
- if (sym == NULL)
- {
- // Check whether the symbol was named in a -u option.
- if (!parameters->options().is_undefined(sym_name))
- continue;
- }
- else if (!sym->is_undefined())
- {
- this->armap_checked_[i] = true;
- continue;
- }
- else if (sym->binding() == elfcpp::STB_WEAK)
+ if (t != Archive::SHOULD_INCLUDE_YES)
continue;
// We want to include this object in the link.
last_seen_offset = this->armap_[i].file_offset;
this->seen_offsets_.insert(last_seen_offset);
- this->armap_checked_[i] = true;
- std::string why;
- if (sym == NULL)
- {
- why = "-u ";
- why += sym_name;
- }
if (!this->include_member(symtab, layout, input_objects,
last_seen_offset, mapfile, sym,
why.c_str()))
delete obj;
else
{
- Read_symbols_data sd;
- obj->read_symbols(&sd);
- obj->layout(symtab, layout, &sd);
- obj->add_symbols(symtab, &sd, layout);
+ {
+ Read_symbols_data sd;
+ obj->read_symbols(&sd);
+ obj->layout(symtab, layout, &sd);
+ obj->add_symbols(symtab, &sd, layout);
+ }
// If this is an external member of a thin archive, unlock the file
// for the next task.
}
}
+// Class Lib_group static variables.
+unsigned int Lib_group::total_lib_groups;
+unsigned int Lib_group::total_members;
+unsigned int Lib_group::total_members_loaded;
+
+Lib_group::Lib_group(const Input_file_lib* lib, Task* task)
+ : lib_(lib), task_(task), members_()
+{
+ this->members_.resize(lib->size());
+}
+
+// Select members from the lib group and add them to the link. We walk
+// through the the members, and check if each one up should be included.
+// If the object says it should be included, we do so. We have to do
+// this in a loop, since including one member may create new undefined
+// symbols which may be satisfied by other members.
+
+void
+Lib_group::add_symbols(Symbol_table* symtab, Layout* layout,
+ Input_objects* input_objects)
+{
+ ++Lib_group::total_lib_groups;
+
+ Lib_group::total_members += this->members_.size();
+
+ bool added_new_object;
+ do
+ {
+ added_new_object = false;
+ unsigned int i = 0;
+ while (i < this->members_.size())
+ {
+ const Archive_member& member = this->members_[i];
+ Object *obj = member.obj_;
+ std::string why;
+
+ // Skip files with no symbols. Plugin objects have
+ // member.sd_ == NULL.
+ if (obj != NULL
+ && (member.sd_ == NULL || member.sd_->symbol_names != NULL))
+ {
+ Archive::Should_include t = obj->should_include_member(symtab,
+ member.sd_,
+ &why);
+
+ if (t != Archive::SHOULD_INCLUDE_YES)
+ {
+ ++i;
+ continue;
+ }
+
+ this->include_member(symtab, layout, input_objects, member);
+
+ added_new_object = true;
+ }
+ else
+ {
+ if (member.sd_ != NULL)
+ delete member.sd_;
+ }
+
+ this->members_[i] = this->members_.back();
+ this->members_.pop_back();
+ }
+ }
+ while (added_new_object);
+}
+
+// Include a lib group member in the link.
+
+void
+Lib_group::include_member(Symbol_table* symtab, Layout* layout,
+ Input_objects* input_objects,
+ const Archive_member& member)
+{
+ ++Lib_group::total_members_loaded;
+
+ Object* obj = member.obj_;
+ gold_assert(obj != NULL);
+
+ Pluginobj* pluginobj = obj->pluginobj();
+ if (pluginobj != NULL)
+ {
+ pluginobj->add_symbols(symtab, NULL, layout);
+ return;
+ }
+
+ Read_symbols_data* sd = member.sd_;
+ gold_assert(sd != NULL);
+ obj->lock(this->task_);
+ if (input_objects->add_object(obj))
+ {
+ obj->layout(symtab, layout, sd);
+ obj->add_symbols(symtab, sd, layout);
+ // Unlock the file for the next task.
+ obj->unlock(this->task_);
+ }
+ delete sd;
+}
+
+// Print statistical information to stderr. This is used for --stats.
+
+void
+Lib_group::print_stats()
+{
+ fprintf(stderr, _("%s: lib groups: %u\n"),
+ program_name, Lib_group::total_lib_groups);
+ fprintf(stderr, _("%s: total lib groups members: %u\n"),
+ program_name, Lib_group::total_members);
+ fprintf(stderr, _("%s: loaded lib groups members: %u\n"),
+ program_name, Lib_group::total_members_loaded);
+}
+
+Task_token*
+Add_lib_group_symbols::is_runnable()
+{
+ if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
+ return this->this_blocker_;
+ return NULL;
+}
+
+void
+Add_lib_group_symbols::locks(Task_locker* tl)
+{
+ tl->add(this, this->next_blocker_);
+}
+
+void
+Add_lib_group_symbols::run(Workqueue*)
+{
+ this->lib_->add_symbols(this->symtab_, this->layout_, this->input_objects_);
+}
+
+Add_lib_group_symbols::~Add_lib_group_symbols()
+{
+ if (this->this_blocker_ != NULL)
+ delete this->this_blocker_;
+ // next_blocker_ is deleted by the task associated with the next
+ // input file.
+}
+
} // End namespace gold.
projects / binutils-gdb.git / blobdiff