#include <utility>
#include "object.h"
+#include "output.h"
+#include "target.h"
#include "symtab.h"
namespace gold
// Class Symbol_table.
Symbol_table::Symbol_table()
- : size_(0), table_(), namepool_(), forwarders_()
+ : size_(0), offset_(0), table_(), namepool_(), forwarders_()
{
}
from->set_forwarder();
}
+// Resolve the forwards from FROM, returning the real symbol.
+
Symbol*
Symbol_table::resolve_forwards(Symbol* from) const
{
return p->second;
}
+// Look up a symbol by name.
+
+Symbol*
+Symbol_table::lookup(const char* name, const char* version) const
+{
+ name = this->namepool_.find(name);
+ if (name == NULL)
+ return NULL;
+ if (version != NULL)
+ {
+ version = this->namepool_.find(version);
+ if (version == NULL)
+ return NULL;
+ }
+
+ Symbol_table_key key(name, version);
+ Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key);
+ if (p == this->table_.end())
+ return NULL;
+ return p->second;
+}
+
// Resolve a Symbol with another Symbol. This is only used in the
// unusual case where there are references to both an unversioned
// symbol and a symbol with a version, and we then discover that that
template<int size, bool big_endian>
void
-Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from)
+Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from
+ ACCEPT_SIZE_ENDIAN)
{
unsigned char buf[elfcpp::Elf_sizes<size>::sym_size];
elfcpp::Sym_write<size, big_endian> esym(buf);
if (!ins.second)
{
// We already have an entry for NAME/VERSION.
- ret = this->get_sized_symbol<size>(ins.first->second);
+ ret = this->get_sized_symbol SELECT_SIZE_NAME (ins.first->second
+ SELECT_SIZE(size));
assert(ret != NULL);
Symbol_table::resolve(ret, sym, object);
{
// This is the unfortunate case where we already have
// entries for both NAME/VERSION and NAME/NULL.
- const Sized_symbol<size>* sym2 =
- this->get_sized_symbol<size>(insdef.first->second);
- Symbol_table::resolve<size, big_endian>(ret, sym2);
+ const Sized_symbol<size>* sym2;
+ sym2 = this->get_sized_symbol SELECT_SIZE_NAME (
+ insdef.first->second
+ SELECT_SIZE(size));
+ Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME (
+ ret, sym2 SELECT_SIZE_ENDIAN(size, big_endian));
this->make_forwarder(insdef.first->second, ret);
insdef.first->second = ret;
}
{
// We already have an entry for NAME/NULL. Make
// NAME/VERSION point to it.
- ret = this->get_sized_symbol<size>(insdef.first->second);
+ ret = this->get_sized_symbol SELECT_SIZE_NAME (insdef.first->second
+ SELECT_SIZE(size));
Symbol_table::resolve(ret, sym, object);
ins.first->second = ret;
}
unsigned int st_name = sym.get_st_name();
if (st_name >= sym_name_size)
{
- fprintf(stderr, _("%s: %s: bad symbol name offset %u at %lu\n"),
+ fprintf(stderr,
+ _("%s: %s: bad global symbol name offset %u at %lu\n"),
program_name, object->name().c_str(), st_name,
static_cast<unsigned long>(i));
gold_exit(false);
}
}
+// Set the final values for all the symbols. Record the file offset
+// OFF. Add their names to POOL. Return the new file offset.
+
+off_t
+Symbol_table::finalize(off_t off, Stringpool* pool)
+{
+ if (this->size_ == 32)
+ return this->sized_finalize<32>(off, pool);
+ else if (this->size_ == 64)
+ return this->sized_finalize<64>(off, pool);
+ else
+ abort();
+}
+
+// Set the final value for all the symbols.
+
+template<int size>
+off_t
+Symbol_table::sized_finalize(off_t off, Stringpool* pool)
+{
+ off = (off + (size >> 3) - 1) & ~ ((size >> 3) - 1);
+ this->offset_ = off;
+
+ const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
+ Symbol_table_type::iterator p = this->table_.begin();
+ size_t count = 0;
+ while (p != this->table_.end())
+ {
+ Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second);
+
+ // FIXME: Here we need to decide which symbols should go into
+ // the output file.
+
+ // FIXME: This is wrong.
+ if (sym->shnum() >= elfcpp::SHN_LORESERVE)
+ {
+ ++p;
+ continue;
+ }
+
+ const Object::Map_to_output* mo =
+ sym->object()->section_output_info(sym->shnum());
+
+ if (mo->output_section == NULL)
+ {
+ // We should be able to erase this symbol from the symbol
+ // table, but at least with gcc 4.0.2
+ // std::unordered_map::erase doesn't appear to return the
+ // new iterator.
+ // p = this->table_.erase(p);
+ ++p;
+ }
+ else
+ {
+ sym->set_value(sym->value()
+ + mo->output_section->address()
+ + mo->offset);
+ pool->add(sym->name());
+ ++p;
+ ++count;
+ off += sym_size;
+ }
+ }
+
+ this->output_count_ = count;
+
+ return off;
+}
+
+// Write out the global symbols.
+
+void
+Symbol_table::write_globals(const Target* target, const Stringpool* sympool,
+ Output_file* of) const
+{
+ if (this->size_ == 32)
+ {
+ if (target->is_big_endian())
+ this->sized_write_globals<32, true>(target, sympool, of);
+ else
+ this->sized_write_globals<32, false>(target, sympool, of);
+ }
+ else if (this->size_ == 64)
+ {
+ if (target->is_big_endian())
+ this->sized_write_globals<64, true>(target, sympool, of);
+ else
+ this->sized_write_globals<64, false>(target, sympool, of);
+ }
+ else
+ abort();
+}
+
+// Write out the global symbols.
+
+template<int size, bool big_endian>
+void
+Symbol_table::sized_write_globals(const Target*,
+ const Stringpool* sympool,
+ Output_file* of) const
+{
+ const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
+ unsigned char* psyms = of->get_output_view(this->offset_,
+ this->output_count_ * sym_size);
+ unsigned char* ps = psyms;
+ for (Symbol_table_type::const_iterator p = this->table_.begin();
+ p != this->table_.end();
+ ++p)
+ {
+ Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second);
+
+ // FIXME: This repeats sized_finalize().
+
+ // FIXME: This is wrong.
+ if (sym->shnum() >= elfcpp::SHN_LORESERVE)
+ continue;
+
+ const Object::Map_to_output* mo =
+ sym->object()->section_output_info(sym->shnum());
+
+ if (mo->output_section == NULL)
+ continue;
+
+ elfcpp::Sym_write<size, big_endian> osym(ps);
+ osym.put_st_name(sympool->get_offset(sym->name()));
+ osym.put_st_value(sym->value());
+ osym.put_st_size(sym->symsize());
+ osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type()));
+ osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->other()));
+ osym.put_st_shndx(mo->output_section->shndx());
+
+ ps += sym_size;
+ }
+
+ of->write_output_view(this->offset_, this->output_count_ * sym_size, psyms);
+}
+
// Instantiate the templates we need. We could use the configure
// script to restrict this to only the ones needed for implemented
// targets.
projects / binutils-gdb.git / blobdiff