p_ps1.h

UPX 源代码

/* p_ps1.h --

   This file is part of the UPX executable compressor.

   Copyright (C) 1996-2007 Markus Franz Xaver Johannes Oberhumer
   Copyright (C) 1996-2007 Laszlo Molnar
   Copyright (C) 2002-2007 Jens Medoch
   All Rights Reserved.

   UPX and the UCL library are free software; you can redistribute them
   and/or modify them under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 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; see the file COPYING.
   If not, write to the Free Software Foundation, Inc.,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

   Markus F.X.J. Oberhumer              Laszlo Molnar
   <[e-mail]>          <[e-mail]>

   Jens Medoch
   <[e-mail]>
 */


#ifndef __UPX_P_PS1_H
#define __UPX_P_PS1_H


/*************************************************************************
// ps1/exe
**************************************************************************/

class PackPs1 : public Packer
{
    typedef Packer super;
public:
    PackPs1(InputFile *f);
    virtual int getVersion() const { return 13; }
    virtual int getFormat() const { return UPX_F_PS1_EXE; }
    virtual const char *getName() const { return "ps1/exe"; }
    virtual const char *getFullName(const options_t *) const { return "mipsel.r3000-ps1"; }
    virtual const int *getCompressionMethods(int method, int level) const;
    virtual const int *getFilters() const;

    virtual void pack(OutputFile *fo);
    virtual void unpack(OutputFile *fo);

    virtual bool canPack();
    virtual int canUnpack();

protected:
    virtual void putBkupHeader(const unsigned char *src, unsigned char *dst, unsigned *len);
    virtual bool getBkupHeader(unsigned char *src, unsigned char * dst);
    virtual bool readBkupHeader();
    virtual void buildLoader(const Filter *ft);
    virtual bool findBssSection();
    virtual Linker* newLinker() const;

    virtual int readFileHeader();
    virtual bool checkFileHeader();

    struct ps1_exe_t
    {
        // ident string
        char id[8];
        // is NULL
        LE32 text;
        // is NULL
        LE32 data;
        // initial program counter
        LE32 epc;
        // initial gp register value
        LE32 gp;
        // load offset of binary data
        LE32 tx_ptr, tx_len;
        LE32 da_ptr, da_len;
        LE32 bs_ptr, bs_len;
        // initial stack params
        LE32 is_ptr, is_len;
        // saved regs on execution
        LE32 sp, fp, gp0, ra, k0;
        // origin Jap/USA/Europe
        char origin[60];
        // backup of the original header (epc - is_len)
        // id & the upx header ...
    }
    __attribute_packed;

    // for unpack
    struct ps1_exe_hb_t
    {
        LE32 ih_bkup[10];
        // plus checksum for the backup
        LE32 ih_csum;
    }
    __attribute_packed;

    struct ps1_exe_chb_t
    {
        unsigned char id;
        unsigned char len;
        LE16          ih_csum;
        unsigned char ih_bkup;
    }
    __attribute_packed;

    struct bss_nfo
    {
        LE16    hi1, op1, lo1, op2;
        LE16    hi2, op3, lo2, op4;
    }
    __attribute_packed;

    ps1_exe_t ih, oh;
    ps1_exe_hb_t bh;

    bool isCon;
    bool is32Bit;
    bool buildPart2;
    bool foundBss;
    unsigned ram_size;
    unsigned sa_cnt, overlap;
    unsigned sz_lunc, sz_lcpr;
    unsigned pad_code;
    unsigned bss_start, bss_end;
    // filesize-PS_HDR_SIZE
    unsigned fdata_size;
};


#endif /* already included */


/*
vi:ts=4:et
*/