105 lines
2.6 KiB
Text
105 lines
2.6 KiB
Text
/*
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* This file is part of libsidplayfp, a SID player engine.
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*
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* Copyright (C) 2013-2014 Leandro Nini
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* Copyright (C) 2001 Dag Lem
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* Copyright (C) 1989-1997 André Fachat (a.fachat@physik.tu-chemnitz.de)
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*
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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 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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Modified by Dag Lem <resid@nimrod.no>
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Relocate and extract text segment from memory buffer instead of file.
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For use with VICE VSID.
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Ported to c++ by Leandro Nini
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*/
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#ifndef RELOC65_H
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#define RELOC65_H
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/**
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* reloc65 -- A part of xa65 - 65xx/65816 cross-assembler and utility suite
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* o65 file relocator.
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*/
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class reloc65
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{
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public:
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typedef enum
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{
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WHOLE,
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TEXT,
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DATA,
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BSS,
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ZEROPAGE
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} segment_t;
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private:
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int m_tbase, m_dbase, m_bbase, m_zbase;
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int m_tdiff, m_ddiff, m_bdiff, m_zdiff;
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bool m_tflag, m_dflag, m_bflag, m_zflag;
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segment_t m_extract;
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private:
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int reldiff(unsigned char s);
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/**
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* Relocate segment.
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*
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* @param buf segment
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* @param len segment size
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* @param rtab relocation table
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* @return a pointer to the next section
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*/
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unsigned char* reloc_seg(unsigned char *buf, int len, unsigned char *rtab);
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/**
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* Relocate exported globals list.
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*
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* @param buf exported globals list
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* @return a pointer to the next section
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*/
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unsigned char* reloc_globals(unsigned char *buf);
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public:
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reloc65();
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/**
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* Select segment to relocate.
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*
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* @param type the segment to relocate
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* @param addr new address
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*/
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void setReloc(segment_t type, int addr);
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/**
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* Select segment to extract.
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*
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* @param type the segment to extract
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*/
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void setExtract(segment_t type);
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/**
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* Do the relocation.
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*
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* @param buf beffer containing o65 data
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* @param fsize size of the data
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*/
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bool reloc(unsigned char **buf, int *fsize);
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};
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#endif
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