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authorCary Coutant <ccoutant@google.com>2011-04-25 20:28:48 +0000
committerCary Coutant <ccoutant@google.com>2011-04-25 20:28:48 +0000
commitf0f9babffe098a7419062b594894ac5c57b28e88 (patch)
treee677eab0152eeed2dfd1a570993294cdd1b6e295 /gold/incremental.cc
parent3e03848b6ca5ca5a8e36d4a8be1682c0c220a6d5 (diff)
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* incremental-dump.cc (dump_incremental_inputs): Print local
symbol info for each input file. * incremental.cc (Output_section_incremental_inputs::set_final_data_size): Add local symbol info to input file entries in incremental info. (Output_section_incremental_inputs::write_info_blocks): Likewise. (Sized_incr_relobj::Sized_incr_relobj): Initialize new data members. (Sized_incr_relobj::do_add_symbols): Cosmetic change. (Sized_incr_relobj::do_count_local_symbols): Replace stub with implementation. (Sized_incr_relobj::do_finalize_local_symbols): Likewise. (Sized_incr_relobj::do_relocate): Write the local symbols. (Sized_incr_dynobj::do_add_symbols): Cosmetic change. * incremental.h (Incremental_inputs_reader::get_symbol_offset): Adjust size of input file header. (Incremental_inputs_reader::get_local_symbol_offset): New function. (Incremental_inputs_reader::get_local_symbol_count): New function. (Incremental_inputs_reader::get_input_section): Adjust size of input file header. (Incremental_inputs_reader::get_global_symbol_reader): Likewise. (Sized_incr_relobj::This): New typedef. (Sized_incr_relobj::sym_size): New const data member. (Sized_incr_relobj::Local_symbol): New struct. (Sized_incr_relobj::do_output_local_symbol_count): New function. (Sized_incr_relobj::do_local_symbol_offset): New function. (Sized_incr_relobj::local_symbol_count_): New data member. (Sized_incr_relobj::output_local_dynsym_count_): New data member. (Sized_incr_relobj::local_symbol_index_): New data member. (Sized_incr_relobj::local_symbol_offset_): New data member. (Sized_incr_relobj::local_dynsym_offset_): New data member. (Sized_incr_relobj::local_symbols_): New data member. * object.h (Relobj::output_local_symbol_count): New function. (Relobj::local_symbol_offset): New function. (Relobj::do_output_local_symbol_count): New function. (Relobj::do_local_symbol_offset): New function. (Sized_relobj::do_output_local_symbol_count): New function. (Sized_relobj::do_local_symbol_offset): New function.
Diffstat (limited to 'gold/incremental.cc')
-rw-r--r--gold/incremental.cc147
1 files changed, 136 insertions, 11 deletions
diff --git a/gold/incremental.cc b/gold/incremental.cc
index 3de22f1..1250d70 100644
--- a/gold/incremental.cc
+++ b/gold/incremental.cc
@@ -1055,8 +1055,9 @@ Output_section_incremental_inputs<size, big_endian>::set_final_data_size()
Incremental_object_entry* entry = (*p)->object_entry();
gold_assert(entry != NULL);
(*p)->set_info_offset(info_offset);
- // Input section count + global symbol count.
- info_offset += 8;
+ // Input section count, global symbol count, local symbol offset,
+ // local symbol count.
+ info_offset += 16;
// Each input section.
info_offset += (entry->get_input_section_count()
* (8 + 2 * sizeof_addr));
@@ -1295,13 +1296,18 @@ Output_section_incremental_inputs<size, big_endian>::write_info_blocks(
Incremental_object_entry* entry = (*p)->object_entry();
gold_assert(entry != NULL);
const Object* obj = entry->object();
+ const Relobj* relobj = static_cast<const Relobj*>(obj);
const Object::Symbols* syms = obj->get_global_symbols();
// Write the input section count and global symbol count.
unsigned int nsections = entry->get_input_section_count();
unsigned int nsyms = syms->size();
+ off_t locals_offset = relobj->local_symbol_offset();
+ unsigned int nlocals = relobj->output_local_symbol_count();
Swap32::writeval(pov, nsections);
Swap32::writeval(pov + 4, nsyms);
- pov += 8;
+ Swap32::writeval(pov + 8, static_cast<unsigned int>(locals_offset));
+ Swap32::writeval(pov + 12, nlocals);
+ pov += 16;
// Build a temporary array to map input section indexes
// from the original object file index to the index in the
@@ -1671,8 +1677,11 @@ Sized_incr_relobj<size, big_endian>::Sized_incr_relobj(
: Sized_relobj_base<size, big_endian>(name, NULL), ibase_(ibase),
input_file_index_(input_file_index),
input_reader_(ibase->inputs_reader().input_file(input_file_index)),
+ local_symbol_count_(0), output_local_dynsym_count_(0),
+ local_symbol_index_(0), local_symbol_offset_(0), local_dynsym_offset_(0),
symbols_(), section_offsets_(), incr_reloc_offset_(-1U),
- incr_reloc_count_(0), incr_reloc_output_index_(0), incr_relocs_(NULL)
+ incr_reloc_count_(0), incr_reloc_output_index_(0), incr_relocs_(NULL),
+ local_symbols_()
{
if (this->input_reader_.is_in_system_directory())
this->set_is_in_system_directory();
@@ -1756,7 +1765,7 @@ Sized_incr_relobj<size, big_endian>::do_add_symbols(
unsigned int isym_count = isymtab.symbol_count();
unsigned int first_global = symtab_count - isym_count;
- unsigned const char* sym_p;
+ const unsigned char* sym_p;
for (unsigned int i = 0; i < nsyms; ++i)
{
Incremental_global_symbol_reader<big_endian> info =
@@ -2027,10 +2036,40 @@ Sized_incr_relobj<size, big_endian>::do_scan_relocs(Symbol_table*,
template<int size, bool big_endian>
void
Sized_incr_relobj<size, big_endian>::do_count_local_symbols(
- Stringpool_template<char>*,
+ Stringpool_template<char>* pool,
Stringpool_template<char>*)
{
- // FIXME: Count local symbols.
+ const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
+
+ // Set the count of local symbols based on the incremental info.
+ unsigned int nlocals = this->input_reader_.get_local_symbol_count();
+ this->local_symbol_count_ = nlocals;
+ this->local_symbols_.reserve(nlocals);
+
+ // Get views of the base file's symbol table and string table.
+ Incremental_binary::View symtab_view(NULL);
+ unsigned int symtab_count;
+ elfcpp::Elf_strtab strtab(NULL, 0);
+ this->ibase_->get_symtab_view(&symtab_view, &symtab_count, &strtab);
+
+ // Read the local symbols from the base file's symbol table.
+ off_t off = this->input_reader_.get_local_symbol_offset();
+ const unsigned char* symp = symtab_view.data() + off;
+ for (unsigned int i = 0; i < nlocals; ++i, symp += sym_size)
+ {
+ elfcpp::Sym<size, big_endian> sym(symp);
+ const char* name;
+ if (!strtab.get_c_string(sym.get_st_name(), &name))
+ name = "";
+ gold_debug(DEBUG_INCREMENTAL, "Local symbol %d: %s", i, name);
+ name = pool->add(name, true, NULL);
+ this->local_symbols_.push_back(Local_symbol(name,
+ sym.get_st_value(),
+ sym.get_st_size(),
+ sym.get_st_shndx(),
+ sym.get_st_type(),
+ false));
+ }
}
// Finalize the local symbols.
@@ -2039,11 +2078,12 @@ template<int size, bool big_endian>
unsigned int
Sized_incr_relobj<size, big_endian>::do_finalize_local_symbols(
unsigned int index,
- off_t,
+ off_t off,
Symbol_table*)
{
- // FIXME: Finalize local symbols.
- return index;
+ this->local_symbol_index_ = index;
+ this->local_symbol_offset_ = off;
+ return index + this->local_symbol_count_;
}
// Set the offset where local dynamic symbol information will be stored.
@@ -2109,6 +2149,91 @@ Sized_incr_relobj<size, big_endian>::do_relocate(const Symbol_table*,
}
of->write_output_view(off, len, view);
+
+ // Get views into the output file for the portions of the symbol table
+ // and the dynamic symbol table that we will be writing.
+ off_t symtab_off = layout->symtab_section()->offset();
+ off_t output_size = this->local_symbol_count_ * This::sym_size;
+ unsigned char* oview = NULL;
+ if (output_size > 0)
+ oview = of->get_output_view(symtab_off + this->local_symbol_offset_,
+ output_size);
+
+ off_t dyn_output_size = this->output_local_dynsym_count_ * sym_size;
+ unsigned char* dyn_oview = NULL;
+ if (dyn_output_size > 0)
+ dyn_oview = of->get_output_view(this->local_dynsym_offset_,
+ dyn_output_size);
+
+ // Write the local symbols.
+ unsigned char* ov = oview;
+ unsigned char* dyn_ov = dyn_oview;
+ const Stringpool* sympool = layout->sympool();
+ const Stringpool* dynpool = layout->dynpool();
+ Output_symtab_xindex* symtab_xindex = layout->symtab_xindex();
+ Output_symtab_xindex* dynsym_xindex = layout->dynsym_xindex();
+ for (unsigned int i = 0; i < this->local_symbol_count_; ++i)
+ {
+ Local_symbol& lsym(this->local_symbols_[i]);
+
+ bool is_ordinary;
+ unsigned int st_shndx = this->adjust_sym_shndx(i, lsym.st_shndx,
+ &is_ordinary);
+ if (is_ordinary)
+ {
+ Output_section* os = this->ibase_->output_section(st_shndx);
+ st_shndx = os->out_shndx();
+ if (st_shndx >= elfcpp::SHN_LORESERVE)
+ {
+ symtab_xindex->add(this->local_symbol_index_ + i, st_shndx);
+ if (lsym.needs_dynsym_entry)
+ dynsym_xindex->add(lsym.output_dynsym_index, st_shndx);
+ st_shndx = elfcpp::SHN_XINDEX;
+ }
+ }
+
+ // Write the symbol to the output symbol table.
+ {
+ elfcpp::Sym_write<size, big_endian> osym(ov);
+ osym.put_st_name(sympool->get_offset(lsym.name));
+ osym.put_st_value(lsym.st_value);
+ osym.put_st_size(lsym.st_size);
+ osym.put_st_info(elfcpp::STB_LOCAL,
+ static_cast<elfcpp::STT>(lsym.st_type));
+ osym.put_st_other(0);
+ osym.put_st_shndx(st_shndx);
+ ov += sym_size;
+ }
+
+ // Write the symbol to the output dynamic symbol table.
+ if (lsym.needs_dynsym_entry)
+ {
+ gold_assert(dyn_ov < dyn_oview + dyn_output_size);
+ elfcpp::Sym_write<size, big_endian> osym(dyn_ov);
+ osym.put_st_name(dynpool->get_offset(lsym.name));
+ osym.put_st_value(lsym.st_value);
+ osym.put_st_size(lsym.st_size);
+ osym.put_st_info(elfcpp::STB_LOCAL,
+ static_cast<elfcpp::STT>(lsym.st_type));
+ osym.put_st_other(0);
+ osym.put_st_shndx(st_shndx);
+ dyn_ov += sym_size;
+ }
+ }
+
+ if (output_size > 0)
+ {
+ gold_assert(ov - oview == output_size);
+ of->write_output_view(symtab_off + this->local_symbol_offset_,
+ output_size, oview);
+ }
+
+ if (dyn_output_size > 0)
+ {
+ gold_assert(dyn_ov - dyn_oview == dyn_output_size);
+ of->write_output_view(this->local_dynsym_offset_, dyn_output_size,
+ dyn_oview);
+ }
}
// Set the offset of a section.
@@ -2187,7 +2312,7 @@ Sized_incr_dynobj<size, big_endian>::do_add_symbols(
unsigned int isym_count = isymtab.symbol_count();
unsigned int first_global = symtab_count - isym_count;
- unsigned const char* sym_p;
+ const unsigned char* sym_p;
for (unsigned int i = 0; i < nsyms; ++i)
{
bool is_def;