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