62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
// ehframe.h -- handle exception frame sections for gold -*- C++ -*-
|
|
|
|
// Copyright 2006, 2007 Free Software Foundation, Inc.
|
|
// Written by Ian Lance Taylor <iant@google.com>.
|
|
|
|
// This file is part of gold.
|
|
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
// MA 02110-1301, USA.
|
|
|
|
#ifndef GOLD_EHFRAME_H
|
|
#define GOLD_EHFRAME_H
|
|
|
|
#include "output.h"
|
|
|
|
namespace gold
|
|
{
|
|
|
|
// This class manages the .eh_frame_hdr section, which holds the data
|
|
// for the PT_GNU_EH_FRAME segment. gcc's unwind support code uses
|
|
// the PT_GNU_EH_FRAME segment to find the list of FDEs. This saves
|
|
// the time required to register the exception handlers at startup
|
|
// time and when a shared object is loaded, and the time required to
|
|
// deregister the exception handlers when a shared object is unloaded.
|
|
|
|
// FIXME: gcc supports using storing a sorted lookup table for the
|
|
// FDEs in the PT_GNU_EH_FRAME segment, but we do not yet generate
|
|
// that.
|
|
|
|
class Eh_frame_hdr : public Output_section_data
|
|
{
|
|
public:
|
|
Eh_frame_hdr(Output_section* eh_frame_section);
|
|
|
|
// Set the final data size.
|
|
void
|
|
do_set_address(uint64_t address, off_t offset);
|
|
|
|
// Write the data to the file.
|
|
void
|
|
do_write(Output_file*);
|
|
|
|
private:
|
|
// The .eh_frame section.
|
|
Output_section* eh_frame_section_;
|
|
};
|
|
|
|
} // End namespace gold.
|
|
|
|
#endif // !defined(GOLD_EHFRAME_H)
|