OpenE2K
/
binutils-gdb
12
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

2009-10-22 Doug Kwan <dougkwan@google.com> 

* arm.cc (Arm_input_section): New class definition.
	(Arm_input_section::init, Arm_input_section:do_write,
	Arm_input_section::set_final_data_size,
	Arm_input_section::do_reset_address_and_file_offset): New method
	definitions.
This commit is contained in:
Doug Kwan 2009-10-22 18:58:02 +00:00
parent 46187dff42
commit 10ad9fe591
2 changed files with 187 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gold/ChangeLog
View File

@ -1,3 +1,11 @@
2009-10-22 Doug Kwan <dougkwan@google.com>
* arm.cc (Arm_input_section): New class definition.
(Arm_input_section::init, Arm_input_section:do_write,
Arm_input_section::set_final_data_size,
Arm_input_section::do_reset_address_and_file_offset): New method
definitions.
2009-10-21 Doug Kwan <dougkwan@google.com>
* arm.cc (Stub_table, Arm_input_section): New forward class

179
gold/arm.cc
View File

@ -745,6 +745,95 @@ class Stub_table : public Output_data
Reloc_stub_map reloc_stubs_;
};
// A class to wrap an ordinary input section containing executable code.
template<bool big_endian>
class Arm_input_section : public Output_relaxed_input_section
{
public:
Arm_input_section(Relobj* relobj, unsigned int shndx)
: Output_relaxed_input_section(relobj, shndx, 1),
original_addralign_(1), original_size_(0), stub_table_(NULL)
{ }
~Arm_input_section()
{ }
// Initialize.
void
init();
// Whether this is a stub table owner.
bool
is_stub_table_owner() const
{ return this->stub_table_ != NULL && this->stub_table_->owner() == this; }
// Return the stub table.
Stub_table<big_endian>*
stub_table() const
{ return this->stub_table_; }
// Set the stub_table.
void
set_stub_table(Stub_table<big_endian>* stub_table)
{ this->stub_table_ = stub_table; }
protected:
// Write data to output file.
void
do_write(Output_file*);
// Return required alignment of this.
uint64_t
do_addralign() const
{
if (this->is_stub_table_owner())
return std::max(this->stub_table_->addralign(),
this->original_addralign_);
else
return this->original_addralign_;
}
// Finalize data size.
void
set_final_data_size();
// Reset address and file offset.
void
do_reset_address_and_file_offset();
// Output offset.
bool
do_output_offset(const Relobj* object, unsigned int shndx,
section_offset_type offset,
section_offset_type* poutput) const
{
if ((object == this->relobj())
&& (shndx == this->shndx())
&& (offset >= 0)
&& (convert_types<uint64_t, section_offset_type>(offset)
<= this->original_size_))
{
*poutput = offset;
return true;
}
else
return false;
}
private:
// Copying is not allowed.
Arm_input_section(const Arm_input_section&);
Arm_input_section& operator=(const Arm_input_section&);
// Address alignment of the original input section.
uint64_t original_addralign_;
// Section size of the original input section.
uint64_t original_size_;
// Stub table.
Stub_table<big_endian>* stub_table_;
};
// Utilities for manipulating integers of up to 32-bits
namespace utils
@ -2470,6 +2559,96 @@ Stub_table<big_endian>::do_write(Output_file* of)
of->write_output_view(this->offset(), oview_size, oview);
}
// Arm_input_section methods.
// Initialize an Arm_input_section.
template<bool big_endian>
void
Arm_input_section<big_endian>::init()
{
Relobj* relobj = this->relobj();
unsigned int shndx = this->shndx();
// Cache these to speed up size and alignment queries. It is too slow
// to call section_addraglin and section_size every time.
this->original_addralign_ = relobj->section_addralign(shndx);
this->original_size_ = relobj->section_size(shndx);
// We want to make this look like the original input section after
// output sections are finalized.
Output_section* os = relobj->output_section(shndx);
off_t offset = relobj->output_section_offset(shndx);
gold_assert(os != NULL && !relobj->is_output_section_offset_invalid(shndx));
this->set_address(os->address() + offset);
this->set_file_offset(os->offset() + offset);
this->set_current_data_size(this->original_size_);
this->finalize_data_size();
}
template<bool big_endian>
void
Arm_input_section<big_endian>::do_write(Output_file* of)
{
// We have to write out the original section content.
section_size_type section_size;
const unsigned char* section_contents =
this->relobj()->section_contents(this->shndx(), &section_size, false);
of->write(this->offset(), section_contents, section_size);
// If this owns a stub table and it is not empty, write it.
if (this->is_stub_table_owner() && !this->stub_table_->empty())
this->stub_table_->write(of);
}
// Finalize data size.
template<bool big_endian>
void
Arm_input_section<big_endian>::set_final_data_size()
{
// If this owns a stub table, finalize its data size as well.
if (this->is_stub_table_owner())
{
uint64_t address = this->address();
// The stub table comes after the original section contents.
address += this->original_size_;
address = align_address(address, this->stub_table_->addralign());
off_t offset = this->offset() + (address - this->address());
this->stub_table_->set_address_and_file_offset(address, offset);
address += this->stub_table_->data_size();
gold_assert(address == this->address() + this->current_data_size());
}
this->set_data_size(this->current_data_size());
}
// Reset address and file offset.
template<bool big_endian>
void
Arm_input_section<big_endian>::do_reset_address_and_file_offset()
{
// Size of the original input section contents.
off_t off = convert_types<off_t, uint64_t>(this->original_size_);
// If this is a stub table owner, account for the stub table size.
if (this->is_stub_table_owner())
{
Stub_table<big_endian>* stub_table = this->stub_table_;
// Reset the stub table's address and file offset. The
// current data size for child will be updated after that.
stub_table_->reset_address_and_file_offset();
off = align_address(off, stub_table_->addralign());
off += stub_table->current_data_size();
}
this->set_current_data_size(off);
}
// A class to handle the PLT data.
template<bool big_endian>