#include "libiberty.h"
+#include "dwarf.h"
#include "parameters.h"
#include "object.h"
#include "symtab.h"
# define MREMAP_MAYMOVE 1
#endif
-#ifndef HAVE_POSIX_FALLOCATE
-// A dummy, non general, version of posix_fallocate. Here we just set
-// the file size and hope that there is enough disk space. FIXME: We
-// could allocate disk space by walking block by block and writing a
-// zero byte into each block.
-static int
-posix_fallocate(int o, off_t offset, off_t len)
-{
- return ftruncate(o, offset + len);
-}
-#endif // !defined(HAVE_POSIX_FALLOCATE)
-
// Mingw does not have S_ISLNK.
#ifndef S_ISLNK
# define S_ISLNK(mode) 0
namespace gold
{
+// A wrapper around posix_fallocate. If we don't have posix_fallocate,
+// or the --no-posix-fallocate option is set, we try the fallocate
+// system call directly. If that fails, we use ftruncate to set
+// the file size and hope that there is enough disk space.
+
+static int
+gold_fallocate(int o, off_t offset, off_t len)
+{
+#ifdef HAVE_POSIX_FALLOCATE
+ if (parameters->options().posix_fallocate())
+ return ::posix_fallocate(o, offset, len);
+#endif // defined(HAVE_POSIX_FALLOCATE)
+#ifdef HAVE_FALLOCATE
+ if (::fallocate(o, 0, offset, len) == 0)
+ return 0;
+#endif // defined(HAVE_FALLOCATE)
+ if (::ftruncate(o, offset + len) < 0)
+ return errno;
+ return 0;
+}
+
// Output_data variables.
bool Output_data::allocated_sizes_are_fixed;
Output_data* od,
Address address,
bool is_relative,
- bool is_symbolless)
+ bool is_symbolless,
+ bool use_plt_offset)
: address_(address), local_sym_index_(GSYM_CODE), type_(type),
is_relative_(is_relative), is_symbolless_(is_symbolless),
- is_section_symbol_(false), shndx_(INVALID_CODE)
+ is_section_symbol_(false), use_plt_offset_(use_plt_offset), shndx_(INVALID_CODE)
{
// this->type_ is a bitfield; make sure TYPE fits.
gold_assert(this->type_ == type);
unsigned int shndx,
Address address,
bool is_relative,
- bool is_symbolless)
+ bool is_symbolless,
+ bool use_plt_offset)
: address_(address), local_sym_index_(GSYM_CODE), type_(type),
is_relative_(is_relative), is_symbolless_(is_symbolless),
- is_section_symbol_(false), shndx_(shndx)
+ is_section_symbol_(false), use_plt_offset_(use_plt_offset), shndx_(shndx)
{
gold_assert(shndx != INVALID_CODE);
// this->type_ is a bitfield; make sure TYPE fits.
Address address,
bool is_relative,
bool is_symbolless,
- bool is_section_symbol)
+ bool is_section_symbol,
+ bool use_plt_offset)
: address_(address), local_sym_index_(local_sym_index), type_(type),
is_relative_(is_relative), is_symbolless_(is_symbolless),
- is_section_symbol_(is_section_symbol), shndx_(INVALID_CODE)
+ is_section_symbol_(is_section_symbol), use_plt_offset_(use_plt_offset),
+ shndx_(INVALID_CODE)
{
gold_assert(local_sym_index != GSYM_CODE
&& local_sym_index != INVALID_CODE);
Address address,
bool is_relative,
bool is_symbolless,
- bool is_section_symbol)
+ bool is_section_symbol,
+ bool use_plt_offset)
: address_(address), local_sym_index_(local_sym_index), type_(type),
is_relative_(is_relative), is_symbolless_(is_symbolless),
- is_section_symbol_(is_section_symbol), shndx_(shndx)
+ is_section_symbol_(is_section_symbol), use_plt_offset_(use_plt_offset),
+ shndx_(shndx)
{
gold_assert(local_sym_index != GSYM_CODE
&& local_sym_index != INVALID_CODE);
Output_section* os,
unsigned int type,
Output_data* od,
- Address address)
+ Address address,
+ bool is_relative)
: address_(address), local_sym_index_(SECTION_CODE), type_(type),
- is_relative_(false), is_symbolless_(false),
- is_section_symbol_(true), shndx_(INVALID_CODE)
+ is_relative_(is_relative), is_symbolless_(is_relative),
+ is_section_symbol_(true), use_plt_offset_(false), shndx_(INVALID_CODE)
{
// this->type_ is a bitfield; make sure TYPE fits.
gold_assert(this->type_ == type);
unsigned int type,
Sized_relobj<size, big_endian>* relobj,
unsigned int shndx,
- Address address)
+ Address address,
+ bool is_relative)
: address_(address), local_sym_index_(SECTION_CODE), type_(type),
- is_relative_(false), is_symbolless_(false),
- is_section_symbol_(true), shndx_(shndx)
+ is_relative_(is_relative), is_symbolless_(is_relative),
+ is_section_symbol_(true), use_plt_offset_(false), shndx_(shndx)
{
gold_assert(shndx != INVALID_CODE);
// this->type_ is a bitfield; make sure TYPE fits.
Address address)
: address_(address), local_sym_index_(0), type_(type),
is_relative_(false), is_symbolless_(false),
- is_section_symbol_(false), shndx_(INVALID_CODE)
+ is_section_symbol_(false), use_plt_offset_(false), shndx_(INVALID_CODE)
{
// this->type_ is a bitfield; make sure TYPE fits.
gold_assert(this->type_ == type);
Address address)
: address_(address), local_sym_index_(0), type_(type),
is_relative_(false), is_symbolless_(false),
- is_section_symbol_(false), shndx_(shndx)
+ is_section_symbol_(false), use_plt_offset_(false), shndx_(shndx)
{
gold_assert(shndx != INVALID_CODE);
// this->type_ is a bitfield; make sure TYPE fits.
Address address)
: address_(address), local_sym_index_(TARGET_CODE), type_(type),
is_relative_(false), is_symbolless_(false),
- is_section_symbol_(false), shndx_(INVALID_CODE)
+ is_section_symbol_(false), use_plt_offset_(false), shndx_(INVALID_CODE)
{
// this->type_ is a bitfield; make sure TYPE fits.
gold_assert(this->type_ == type);
Address address)
: address_(address), local_sym_index_(TARGET_CODE), type_(type),
is_relative_(false), is_symbolless_(false),
- is_section_symbol_(false), shndx_(shndx)
+ is_section_symbol_(false), use_plt_offset_(false), shndx_(shndx)
{
gold_assert(shndx != INVALID_CODE);
// this->type_ is a bitfield; make sure TYPE fits.
{
const Sized_symbol<size>* sym;
sym = static_cast<const Sized_symbol<size>*>(this->u1_.gsym);
- return sym->value() + addend;
+ if (this->use_plt_offset_ && sym->has_plt_offset())
+ {
+ uint64_t plt_address =
+ parameters->target().plt_address_for_global(sym);
+ return plt_address + sym->plt_offset();
+ }
+ else
+ return sym->value() + addend;
}
- gold_assert(this->local_sym_index_ != SECTION_CODE
- && this->local_sym_index_ != TARGET_CODE
+ if (this->local_sym_index_ == SECTION_CODE)
+ {
+ gold_assert(!this->use_plt_offset_);
+ return this->u1_.os->address() + addend;
+ }
+ gold_assert(this->local_sym_index_ != TARGET_CODE
&& this->local_sym_index_ != INVALID_CODE
&& this->local_sym_index_ != 0
&& !this->is_section_symbol_);
Sized_relobj_file<size, big_endian>* relobj =
this->u1_.relobj->sized_relobj();
gold_assert(relobj != NULL);
+ if (this->use_plt_offset_)
+ {
+ uint64_t plt_address =
+ parameters->target().plt_address_for_local(relobj, lsi);
+ return plt_address + relobj->local_plt_offset(lsi);
+ }
const Symbol_value<size>* symval = relobj->local_symbol(lsi);
return symval->value(relobj, addend);
}
// RELATIVE relocation.
Symbol* gsym = this->u_.gsym;
if (this->use_plt_offset_ && gsym->has_plt_offset())
- val = (parameters->target().plt_section_for_global(gsym)->address()
+ val = (parameters->target().plt_address_for_global(gsym)
+ gsym->plt_offset());
else
{
default:
{
- const Sized_relobj_file<size, big_endian>* object = this->u_.object;
+ const Relobj* object = this->u_.object;
const unsigned int lsi = this->local_sym_index_;
- const Symbol_value<size>* symval = object->local_symbol(lsi);
if (!this->use_plt_offset_)
- val = symval->value(this->u_.object, 0);
+ {
+ uint64_t lval = object->local_symbol_value(lsi, 0);
+ val = convert_types<Valtype, uint64_t>(lval);
+ }
else
{
- const Output_data* plt =
- parameters->target().plt_section_for_local(object, lsi);
- val = plt->address() + object->local_plt_offset(lsi);
+ uint64_t plt_address =
+ parameters->target().plt_address_for_local(object, lsi);
+ val = plt_address + object->local_plt_offset(lsi);
}
}
break;
Output_data_got<size, big_endian>::add_global_with_rel(
Symbol* gsym,
unsigned int got_type,
- Rel_dyn* rel_dyn,
- unsigned int r_type)
-{
- if (gsym->has_got_offset(got_type))
- return;
-
- unsigned int got_offset = this->add_got_entry(Got_entry());
- gsym->set_got_offset(got_type, got_offset);
- rel_dyn->add_global(gsym, r_type, this, got_offset);
-}
-
-template<int size, bool big_endian>
-void
-Output_data_got<size, big_endian>::add_global_with_rela(
- Symbol* gsym,
- unsigned int got_type,
- Rela_dyn* rela_dyn,
+ Output_data_reloc_generic* rel_dyn,
unsigned int r_type)
{
if (gsym->has_got_offset(got_type))
unsigned int got_offset = this->add_got_entry(Got_entry());
gsym->set_got_offset(got_type, got_offset);
- rela_dyn->add_global(gsym, r_type, this, got_offset, 0);
+ rel_dyn->add_global_generic(gsym, r_type, this, got_offset, 0);
}
// Add a pair of entries for a global symbol to the GOT, and add
Output_data_got<size, big_endian>::add_global_pair_with_rel(
Symbol* gsym,
unsigned int got_type,
- Rel_dyn* rel_dyn,
+ Output_data_reloc_generic* rel_dyn,
unsigned int r_type_1,
unsigned int r_type_2)
{
unsigned int got_offset = this->add_got_entry_pair(Got_entry(), Got_entry());
gsym->set_got_offset(got_type, got_offset);
- rel_dyn->add_global(gsym, r_type_1, this, got_offset);
+ rel_dyn->add_global_generic(gsym, r_type_1, this, got_offset, 0);
if (r_type_2 != 0)
- rel_dyn->add_global(gsym, r_type_2, this, got_offset + size / 8);
-}
-
-template<int size, bool big_endian>
-void
-Output_data_got<size, big_endian>::add_global_pair_with_rela(
- Symbol* gsym,
- unsigned int got_type,
- Rela_dyn* rela_dyn,
- unsigned int r_type_1,
- unsigned int r_type_2)
-{
- if (gsym->has_got_offset(got_type))
- return;
-
- unsigned int got_offset = this->add_got_entry_pair(Got_entry(), Got_entry());
- gsym->set_got_offset(got_type, got_offset);
- rela_dyn->add_global(gsym, r_type_1, this, got_offset, 0);
-
- if (r_type_2 != 0)
- rela_dyn->add_global(gsym, r_type_2, this, got_offset + size / 8, 0);
+ rel_dyn->add_global_generic(gsym, r_type_2, this,
+ got_offset + size / 8, 0);
}
// Add an entry for a local symbol to the GOT. This returns true if
template<int size, bool big_endian>
bool
Output_data_got<size, big_endian>::add_local(
- Sized_relobj_file<size, big_endian>* object,
+ Relobj* object,
unsigned int symndx,
unsigned int got_type)
{
template<int size, bool big_endian>
bool
Output_data_got<size, big_endian>::add_local_plt(
- Sized_relobj_file<size, big_endian>* object,
+ Relobj* object,
unsigned int symndx,
unsigned int got_type)
{
template<int size, bool big_endian>
void
Output_data_got<size, big_endian>::add_local_with_rel(
- Sized_relobj_file<size, big_endian>* object,
- unsigned int symndx,
- unsigned int got_type,
- Rel_dyn* rel_dyn,
- unsigned int r_type)
-{
- if (object->local_has_got_offset(symndx, got_type))
- return;
-
- unsigned int got_offset = this->add_got_entry(Got_entry());
- object->set_local_got_offset(symndx, got_type, got_offset);
- rel_dyn->add_local(object, symndx, r_type, this, got_offset);
-}
-
-template<int size, bool big_endian>
-void
-Output_data_got<size, big_endian>::add_local_with_rela(
- Sized_relobj_file<size, big_endian>* object,
+ Relobj* object,
unsigned int symndx,
unsigned int got_type,
- Rela_dyn* rela_dyn,
+ Output_data_reloc_generic* rel_dyn,
unsigned int r_type)
{
if (object->local_has_got_offset(symndx, got_type))
unsigned int got_offset = this->add_got_entry(Got_entry());
object->set_local_got_offset(symndx, got_type, got_offset);
- rela_dyn->add_local(object, symndx, r_type, this, got_offset, 0);
+ rel_dyn->add_local_generic(object, symndx, r_type, this, got_offset, 0);
}
// Add a pair of entries for a local symbol to the GOT, and add
template<int size, bool big_endian>
void
Output_data_got<size, big_endian>::add_local_pair_with_rel(
- Sized_relobj_file<size, big_endian>* object,
- unsigned int symndx,
- unsigned int shndx,
- unsigned int got_type,
- Rel_dyn* rel_dyn,
- unsigned int r_type_1,
- unsigned int r_type_2)
-{
- if (object->local_has_got_offset(symndx, got_type))
- return;
-
- unsigned int got_offset =
- this->add_got_entry_pair(Got_entry(),
- Got_entry(object, symndx, false));
- object->set_local_got_offset(symndx, got_type, got_offset);
- Output_section* os = object->output_section(shndx);
- rel_dyn->add_output_section(os, r_type_1, this, got_offset);
-
- if (r_type_2 != 0)
- rel_dyn->add_output_section(os, r_type_2, this, got_offset + size / 8);
-}
-
-template<int size, bool big_endian>
-void
-Output_data_got<size, big_endian>::add_local_pair_with_rela(
- Sized_relobj_file<size, big_endian>* object,
+ Relobj* object,
unsigned int symndx,
unsigned int shndx,
unsigned int got_type,
- Rela_dyn* rela_dyn,
+ Output_data_reloc_generic* rel_dyn,
unsigned int r_type_1,
unsigned int r_type_2)
{
Got_entry(object, symndx, false));
object->set_local_got_offset(symndx, got_type, got_offset);
Output_section* os = object->output_section(shndx);
- rela_dyn->add_output_section(os, r_type_1, this, got_offset, 0);
+ rel_dyn->add_output_section_generic(os, r_type_1, this, got_offset, 0);
if (r_type_2 != 0)
- rela_dyn->add_output_section(os, r_type_2, this, got_offset + size / 8, 0);
+ rel_dyn->add_output_section_generic(os, r_type_2, this,
+ got_offset + size / 8, 0);
}
// Reserve a slot in the GOT for a local symbol or the second slot of a pair.
void
Output_data_got<size, big_endian>::reserve_local(
unsigned int i,
- Sized_relobj<size, big_endian>* object,
+ Relobj* object,
unsigned int sym_index,
unsigned int got_type)
{
- this->reserve_slot(i);
+ this->do_reserve_slot(i);
object->set_local_got_offset(sym_index, got_type, this->got_offset(i));
}
Symbol* gsym,
unsigned int got_type)
{
- this->reserve_slot(i);
+ this->do_reserve_slot(i);
gsym->set_got_offset(got_type, this->got_offset(i));
}
}
}
+// Replace GOT entry I with a new value.
+
+template<int size, bool big_endian>
+void
+Output_data_got<size, big_endian>::replace_got_entry(
+ unsigned int i,
+ Got_entry got_entry)
+{
+ gold_assert(i < this->entries_.size());
+ this->entries_[i] = got_entry;
+}
+
// Output_data_dynamic::Dynamic_entry methods.
// Write out the entry.
}
}
+// Output_fill_debug_info methods.
+
+// Return the minimum size needed for a dummy compilation unit header.
+
+size_t
+Output_fill_debug_info::do_minimum_hole_size() const
+{
+ // Compile unit header fields: unit_length, version, debug_abbrev_offset,
+ // address_size.
+ const size_t len = 4 + 2 + 4 + 1;
+ // For type units, add type_signature, type_offset.
+ if (this->is_debug_types_)
+ return len + 8 + 4;
+ return len;
+}
+
+// Write a dummy compilation unit header to fill a hole in the
+// .debug_info or .debug_types section.
+
+void
+Output_fill_debug_info::do_write(Output_file* of, off_t off, size_t len) const
+{
+ gold_debug(DEBUG_INCREMENTAL, "fill_debug_info(%08lx, %08lx)",
+ static_cast<long>(off), static_cast<long>(len));
+
+ gold_assert(len >= this->do_minimum_hole_size());
+
+ unsigned char* const oview = of->get_output_view(off, len);
+ unsigned char* pov = oview;
+
+ // Write header fields: unit_length, version, debug_abbrev_offset,
+ // address_size.
+ if (this->is_big_endian())
+ {
+ elfcpp::Swap_unaligned<32, true>::writeval(pov, len - 4);
+ elfcpp::Swap_unaligned<16, true>::writeval(pov + 4, this->version);
+ elfcpp::Swap_unaligned<32, true>::writeval(pov + 6, 0);
+ }
+ else
+ {
+ elfcpp::Swap_unaligned<32, false>::writeval(pov, len - 4);
+ elfcpp::Swap_unaligned<16, false>::writeval(pov + 4, this->version);
+ elfcpp::Swap_unaligned<32, false>::writeval(pov + 6, 0);
+ }
+ pov += 4 + 2 + 4;
+ *pov++ = 4;
+
+ // For type units, the additional header fields -- type_signature,
+ // type_offset -- can be filled with zeroes.
+
+ // Fill the remainder of the free space with zeroes. The first
+ // zero should tell the consumer there are no DIEs to read in this
+ // compilation unit.
+ if (pov < oview + len)
+ memset(pov, 0, oview + len - pov);
+
+ of->write_output_view(off, len, oview);
+}
+
+// Output_fill_debug_line methods.
+
+// Return the minimum size needed for a dummy line number program header.
+
+size_t
+Output_fill_debug_line::do_minimum_hole_size() const
+{
+ // Line number program header fields: unit_length, version, header_length,
+ // minimum_instruction_length, default_is_stmt, line_base, line_range,
+ // opcode_base, standard_opcode_lengths[], include_directories, filenames.
+ const size_t len = 4 + 2 + 4 + this->header_length;
+ return len;
+}
+
+// Write a dummy line number program header to fill a hole in the
+// .debug_line section.
+
+void
+Output_fill_debug_line::do_write(Output_file* of, off_t off, size_t len) const
+{
+ gold_debug(DEBUG_INCREMENTAL, "fill_debug_line(%08lx, %08lx)",
+ static_cast<long>(off), static_cast<long>(len));
+
+ gold_assert(len >= this->do_minimum_hole_size());
+
+ unsigned char* const oview = of->get_output_view(off, len);
+ unsigned char* pov = oview;
+
+ // Write header fields: unit_length, version, header_length,
+ // minimum_instruction_length, default_is_stmt, line_base, line_range,
+ // opcode_base, standard_opcode_lengths[], include_directories, filenames.
+ // We set the header_length field to cover the entire hole, so the
+ // line number program is empty.
+ if (this->is_big_endian())
+ {
+ elfcpp::Swap_unaligned<32, true>::writeval(pov, len - 4);
+ elfcpp::Swap_unaligned<16, true>::writeval(pov + 4, this->version);
+ elfcpp::Swap_unaligned<32, true>::writeval(pov + 6, len - (4 + 2 + 4));
+ }
+ else
+ {
+ elfcpp::Swap_unaligned<32, false>::writeval(pov, len - 4);
+ elfcpp::Swap_unaligned<16, false>::writeval(pov + 4, this->version);
+ elfcpp::Swap_unaligned<32, false>::writeval(pov + 6, len - (4 + 2 + 4));
+ }
+ pov += 4 + 2 + 4;
+ *pov++ = 1; // minimum_instruction_length
+ *pov++ = 0; // default_is_stmt
+ *pov++ = 0; // line_base
+ *pov++ = 5; // line_range
+ *pov++ = 13; // opcode_base
+ *pov++ = 0; // standard_opcode_lengths[1]
+ *pov++ = 1; // standard_opcode_lengths[2]
+ *pov++ = 1; // standard_opcode_lengths[3]
+ *pov++ = 1; // standard_opcode_lengths[4]
+ *pov++ = 1; // standard_opcode_lengths[5]
+ *pov++ = 0; // standard_opcode_lengths[6]
+ *pov++ = 0; // standard_opcode_lengths[7]
+ *pov++ = 0; // standard_opcode_lengths[8]
+ *pov++ = 1; // standard_opcode_lengths[9]
+ *pov++ = 0; // standard_opcode_lengths[10]
+ *pov++ = 0; // standard_opcode_lengths[11]
+ *pov++ = 1; // standard_opcode_lengths[12]
+ *pov++ = 0; // include_directories (empty)
+ *pov++ = 0; // filenames (empty)
+
+ // Some consumers don't check the header_length field, and simply
+ // start reading the line number program immediately following the
+ // header. For those consumers, we fill the remainder of the free
+ // space with DW_LNS_set_basic_block opcodes. These are effectively
+ // no-ops: the resulting line table program will not create any rows.
+ if (pov < oview + len)
+ memset(pov, elfcpp::DW_LNS_set_basic_block, oview + len - pov);
+
+ of->write_output_view(off, len, oview);
+}
+
// Output_section::Input_section methods.
// Return the current data size. For an input section we store the size here.
is_noload_(false),
always_keeps_input_sections_(false),
has_fixed_layout_(false),
+ is_patch_space_allowed_(false),
+ is_unique_segment_(false),
tls_offset_(0),
+ extra_segment_flags_(0),
+ segment_alignment_(0),
checkpoint_(NULL),
lookup_maps_(new Output_section_lookup_maps),
- free_list_()
+ free_list_(),
+ free_space_fill_(NULL),
+ patch_space_(0)
{
// An unallocated section has no address. Forcing this means that
// we don't need special treatment for symbols defined in debug
offset_in_section = this->free_list_.allocate(input_section_size,
addralign, 0);
if (offset_in_section == -1)
- gold_fallback(_("out of patch space; relink with --incremental-full"));
+ gold_fallback(_("out of patch space in section %s; "
+ "relink with --incremental-full"),
+ this->name());
aligned_offset_in_section = offset_in_section;
}
else
&& (sh_flags & elfcpp::SHF_EXECINSTR) != 0
&& parameters->target().has_code_fill()
&& (parameters->target().may_relax()
- || parameters->options().section_ordering_file()))
+ || layout->is_section_ordering_specified()))
{
gold_assert(this->fills_.empty());
this->generate_code_fills_at_write_ = true;
|| this->must_sort_attached_input_sections()
|| parameters->options().user_set_Map()
|| parameters->target().may_relax()
- || parameters->options().section_ordering_file())
+ || layout->is_section_ordering_specified())
{
Input_section isecn(object, shndx, input_section_size, addralign);
+ /* If section ordering is requested by specifying a ordering file,
+ using --section-ordering-file, match the section name with
+ a pattern. */
if (parameters->options().section_ordering_file())
{
unsigned int section_order_index =
offset_in_section = this->free_list_.allocate(posd->data_size(),
posd->addralign(), 0);
if (offset_in_section == -1)
- gold_fallback(_("out of patch space; "
- "relink with --incremental-full"));
+ gold_fallback(_("out of patch space in section %s; "
+ "relink with --incremental-full"),
+ this->name());
// Finalize the address and offset now.
uint64_t addr = this->address();
off_t offset = this->offset();
// If the --section-ordering-file option is used to specify the order of
// sections, we need to keep track of sections.
- if (parameters->options().section_ordering_file())
+ if (layout->is_section_ordering_specified())
{
unsigned int section_order_index =
layout->find_section_order_index(name);
void
Output_section::set_final_data_size()
{
+ off_t data_size;
+
if (this->input_sections_.empty())
+ data_size = this->current_data_size_for_child();
+ else
{
- this->set_data_size(this->current_data_size_for_child());
- return;
- }
+ if (this->must_sort_attached_input_sections()
+ || this->input_section_order_specified())
+ this->sort_attached_input_sections();
- if (this->must_sort_attached_input_sections()
- || this->input_section_order_specified())
- this->sort_attached_input_sections();
+ uint64_t address = this->address();
+ off_t startoff = this->offset();
+ off_t off = startoff + this->first_input_offset_;
+ for (Input_section_list::iterator p = this->input_sections_.begin();
+ p != this->input_sections_.end();
+ ++p)
+ {
+ off = align_address(off, p->addralign());
+ p->set_address_and_file_offset(address + (off - startoff), off,
+ startoff);
+ off += p->data_size();
+ }
+ data_size = off - startoff;
+ }
- uint64_t address = this->address();
- off_t startoff = this->offset();
- off_t off = startoff + this->first_input_offset_;
- for (Input_section_list::iterator p = this->input_sections_.begin();
- p != this->input_sections_.end();
- ++p)
+ // For full incremental links, we want to allocate some patch space
+ // in most sections for subsequent incremental updates.
+ if (this->is_patch_space_allowed_ && parameters->incremental_full())
{
- off = align_address(off, p->addralign());
- p->set_address_and_file_offset(address + (off - startoff), off,
- startoff);
- off += p->data_size();
+ double pct = parameters->options().incremental_patch();
+ size_t extra = static_cast<size_t>(data_size * pct);
+ if (this->free_space_fill_ != NULL
+ && this->free_space_fill_->minimum_hole_size() > extra)
+ extra = this->free_space_fill_->minimum_hole_size();
+ off_t new_size = align_address(data_size + extra, this->addralign());
+ this->patch_space_ = new_size - data_size;
+ gold_debug(DEBUG_INCREMENTAL,
+ "set_final_data_size: %08lx + %08lx: section %s",
+ static_cast<long>(data_size),
+ static_cast<long>(this->patch_space_),
+ this->name());
+ data_size = new_size;
}
- this->set_data_size(off - startoff);
+ this->set_data_size(data_size);
}
// Reset the address and file offset.
p != this->input_sections_.end();
++p)
p->reset_address_and_file_offset();
+
+ // Remove any patch space that was added in set_final_data_size.
+ if (this->patch_space_ > 0)
+ {
+ this->set_current_data_size_for_child(this->current_data_size_for_child()
+ - this->patch_space_);
+ this->patch_space_ = 0;
+ }
}
-
+
// Return true if address and file offset have the values after reset.
bool
return s1_secn_index < s2_secn_index;
}
+// This updates the section order index of input sections according to the
+// the order specified in the mapping from Section id to order index.
+
+void
+Output_section::update_section_layout(
+ const Section_layout_order* order_map)
+{
+ for (Input_section_list::iterator p = this->input_sections_.begin();
+ p != this->input_sections_.end();
+ ++p)
+ {
+ if (p->is_input_section()
+ || p->is_relaxed_input_section())
+ {
+ Object* obj = (p->is_input_section()
+ ? p->relobj()
+ : p->relaxed_input_section()->relobj());
+ unsigned int shndx = p->shndx();
+ Section_layout_order::const_iterator it
+ = order_map->find(Section_id(obj, shndx));
+ if (it == order_map->end())
+ continue;
+ unsigned int section_order_index = it->second;
+ if (section_order_index != 0)
+ {
+ p->set_section_order_index(section_order_index);
+ this->set_input_section_order_specified();
+ }
+ }
+ }
+}
+
// Sort the input sections attached to an output section.
void
}
else
{
- gold_assert(parameters->options().section_ordering_file());
+ gold_assert(this->input_section_order_specified());
std::sort(sort_list.begin(), sort_list.end(),
Input_section_sort_section_order_index_compare());
}
p->write(of);
off = aligned_off + p->data_size();
}
+
+ // For incremental links, fill in unused chunks in debug sections
+ // with dummy compilation unit headers.
+ if (this->free_space_fill_ != NULL)
+ {
+ for (Free_list::Const_iterator p = this->free_list_.begin();
+ p != this->free_list_.end();
+ ++p)
+ {
+ off_t off = p->start_;
+ size_t len = p->end_ - off;
+ this->free_space_fill_->write(of, this->offset() + off, len);
+ }
+ if (this->patch_space_ > 0)
+ {
+ off_t off = this->current_data_size_for_child() - this->patch_space_;
+ this->free_space_fill_->write(of, this->offset() + off,
+ this->patch_space_);
+ }
+ }
}
// If a section requires postprocessing, create the buffer to use.
flags_(flags),
is_max_align_known_(false),
are_addresses_set_(false),
- is_large_data_segment_(false)
+ is_large_data_segment_(false),
+ is_unique_segment_(false)
{
// The ELF ABI specifies that a PT_TLS segment always has PF_R as
// the flags.
(*p)->finalize_data_size();
}
- gold_debug(DEBUG_INCREMENTAL,
- "set_section_list_addresses: %08lx %08lx %s",
- static_cast<long>(off),
- static_cast<long>((*p)->data_size()),
- ((*p)->output_section() != NULL
- ? (*p)->output_section()->name() : "(special)"));
-
- // We want to ignore the size of a SHF_TLS or SHT_NOBITS
+ if (parameters->incremental_update())
+ gold_debug(DEBUG_INCREMENTAL,
+ "set_section_list_addresses: %08lx %08lx %s",
+ static_cast<long>(off),
+ static_cast<long>((*p)->data_size()),
+ ((*p)->output_section() != NULL
+ ? (*p)->output_section()->name() : "(special)"));
+
+ // We want to ignore the size of a SHF_TLS SHT_NOBITS
// section. Such a section does not affect the size of a
// PT_LOAD segment.
if (!(*p)->is_section_flag_set(elfcpp::SHF_TLS)
(*p)->set_tls_offset(this->vaddr_);
}
-// Return the load address of the first section.
+// Return the first section.
-uint64_t
-Output_segment::first_section_load_address() const
+Output_section*
+Output_segment::first_section() const
{
for (int i = 0; i < static_cast<int>(ORDER_MAX); ++i)
{
++p)
{
if ((*p)->is_section())
- return ((*p)->has_load_address()
- ? (*p)->load_address()
- : (*p)->address());
+ return (*p)->output_section();
}
}
gold_unreachable();
if (use_base_file)
{
this->open(s.st_size);
- ssize_t len = ::read(o, this->base_, s.st_size);
- if (len < 0)
- {
- gold_info(_("%s: read failed: %s"), base_name, strerror(errno));
- return false;
- }
- if (len < s.st_size)
- {
- gold_info(_("%s: file too short"), base_name);
- return false;
- }
+ ssize_t bytes_to_read = s.st_size;
+ unsigned char* p = this->base_;
+ while (bytes_to_read > 0)
+ {
+ ssize_t len = ::read(o, p, bytes_to_read);
+ if (len < 0)
+ {
+ gold_info(_("%s: read failed: %s"), base_name, strerror(errno));
+ return false;
+ }
+ if (len == 0)
+ {
+ gold_info(_("%s: file too short: read only %lld of %lld bytes"),
+ base_name,
+ static_cast<long long>(s.st_size - bytes_to_read),
+ static_cast<long long>(s.st_size));
+ return false;
+ }
+ p += len;
+ bytes_to_read -= len;
+ }
::close(o);
return true;
}
// output file will wind up incomplete, but we will have already
// exited. The alternative to fallocate would be to use fdatasync,
// but that would be a more significant performance hit.
- if (writable && ::posix_fallocate(o, 0, this->file_size_) < 0)
- gold_fatal(_("%s: %s"), this->name_, strerror(errno));
+ if (writable)
+ {
+ int err = gold_fallocate(o, 0, this->file_size_);
+ if (err != 0)
+ gold_fatal(_("%s: %s"), this->name_, strerror(err));
+ }
// Map the file into memory.
int prot = PROT_READ;
void
Output_file::map()
{
- if (this->map_no_anonymous(true))
+ if (parameters->options().mmap_output_file()
+ && this->map_no_anonymous(true))
return;
// The mmap call might fail because of file system issues: the file
projects / deliverable / binutils-gdb.git / blobdiff