#include "readsyms.h"
#include "symtab.h"
#include "object.h"
+#include "layout.h"
#include "archive.h"
#include "plugin.h"
+#include "incremental.h"
namespace gold
{
: name_(name), input_file_(input_file), armap_(), armap_names_(),
extended_names_(), armap_checked_(), seen_offsets_(), members_(),
is_thin_archive_(is_thin_archive), included_member_(false),
- nested_archives_(), dirpath_(dirpath), task_(task), num_members_(0)
+ nested_archives_(), dirpath_(dirpath), task_(task), num_members_(0),
+ incremental_info_(NULL)
{
this->no_export_ =
parameters->options().check_excluded_libs(input_file->found_name());
return NULL;
}
- Object *obj = make_elf_object((std::string(this->input_file_->filename())
+ Object* obj = make_elf_object((std::string(this->input_file_->filename())
+ "(" + member_name + ")"),
input_file, memoff, ehdr, read_size,
punconfigured);
this->members_[off] = member;
}
+Archive::Should_include
+Archive::should_include_member(Symbol_table* symtab, Layout* layout,
+ 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))
+ {
+ *why = "-u ";
+ *why += sym_name;
+ }
+ else if (layout->script_options()->is_referenced(sym_name))
+ {
+ size_t alc = 100 + strlen(sym_name);
+ char* buf = new char[alc];
+ snprintf(buf, alc, _("script or expression reference to %s"),
+ sym_name);
+ *why = buf;
+ delete[] buf;
+ }
+ else
+ return Archive::SHOULD_INCLUDE_UNKNOWN;
+ }
+ 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, layout, sym_name, &sym,
+ &why, &tmpbuf, &tmpbuflen);
- 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);
+ 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()))
std::map<off_t, Archive_member>::const_iterator p = this->members_.find(off);
if (p != this->members_.end())
{
- Object *obj = p->second.obj_;
+ Object* obj = p->second.obj_;
- Read_symbols_data *sd = p->second.sd_;
+ Read_symbols_data* sd = p->second.sd_;
if (mapfile != NULL)
mapfile->report_include_archive_member(obj->name(), sym, why);
if (input_objects->add_object(obj))
&& this->searched_for()
&& obj == NULL
&& unconfigured)
- {
- if (obj != NULL)
- delete obj;
- return false;
- }
+ return false;
if (obj == NULL)
return true;
}
if (!input_objects->add_object(obj))
- delete obj;
+ {
+ // If this is an external member of a thin archive, unlock the
+ // file.
+ if (obj->offset() == 0)
+ obj->unlock(this->task_);
+ delete obj;
+ }
else
{
- Read_symbols_data sd;
- obj->read_symbols(&sd);
- obj->layout(symtab, layout, &sd);
- obj->add_symbols(symtab, &sd, layout);
+ {
+ if (layout->incremental_inputs() != NULL)
+ layout->incremental_inputs()->report_object(obj, this);
+ 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.
void
Add_archive_symbols::run(Workqueue* workqueue)
{
+ // For an incremental link, begin recording layout information.
+ Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs();
+ if (incremental_inputs != NULL)
+ incremental_inputs->report_archive_begin(this->archive_);
+
bool added = this->archive_->add_symbols(this->symtab_, this->layout_,
this->input_objects_,
this->mapfile_);
this->input_group_->add_archive(this->archive_);
else
{
+ // For an incremental link, finish recording the layout information.
+ Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs();
+ if (incremental_inputs != NULL)
+ incremental_inputs->report_archive_end(this->archive_);
+
// We no longer need to know about this archive.
delete this->archive_;
this->archive_ = NULL;
}
}
+// 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,
+ layout,
+ 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)
+ {
+ // The file must be locked in order to destroy the views
+ // associated with it.
+ gold_assert(obj != NULL);
+ obj->lock(this->task_);
+ delete member.sd_;
+ obj->unlock(this->task_);
+ }
+ }
+
+ 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))
+ {
+ // FIXME: Record incremental link info for --start-lib/--end-lib.
+ if (layout->incremental_inputs() != NULL)
+ layout->incremental_inputs()->report_object(obj, NULL);
+ obj->layout(symtab, layout, sd);
+ obj->add_symbols(symtab, sd, layout);
+ }
+ delete sd;
+ // Unlock the file for the next task.
+ obj->unlock(this->task_);
+}
+
+// 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->readsyms_blocker_ != NULL && this->readsyms_blocker_->is_blocked())
+ return this->readsyms_blocker_;
+ 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_);
+
+ // FIXME: Record incremental link info for --start_lib/--end_lib.
+}
+
+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 / deliverable / binutils-gdb.git / blobdiff