powerpc-linux.kernel.vmlinux.s

来自「UPX 源代码」· S 代码 · 共 114 行

/*
;  powerpc-linux.kernel.vmlinux.S -- loader & decompressor for the vmlinux/powerpc format
;
;  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) 2004-2007 John Reiser
;  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]>
;
;  John Reiser
;  <[e-mail]>
*/

#include "arch/powerpc/32/macros.S"
#include "arch/powerpc/32/regs.h"

// offsets in struct b_info
sz_unc   = 0
sz_cpr   = 4
b_method = 8
b_ftid   = 9
b_cto8   = 10
sz_b_info = 12

// ========== ENTRY POINT

section LINUX000  // adjust parameters; call decompressor
        b uncompress
        b unfilter

section LINUX010  // call unfilter
        .long filter_length
        .long filter_cto

section LINUX020  // adjust return value

// ========== UNFILTER

unfilter:
//section ctok32.00
#include "arch/powerpc/32/bxx.S"

// ========== DECOMPRESSION

section LINUX030  // decompressor
uncompress:

SZ_DLINE=128  # size of data cache line in Apple G5

/* register assingments for NRV algorithms */
#define  hibit r0  /* holds 0x80000000 during decompress */

#define src  a0
#define lsrc a1
#define dst  a2
#define ldst a3  /* Out: actually a reference: &len_dst */
#define meth a4

#define off  a4
#define len  a5
#define bits a6
#define disp a7


section NRV2B
#include "arch/powerpc/32/nrv2b_d.S"

section NRV2D
#include "arch/powerpc/32/nrv2d_d.S"

section NRV2E
#include "arch/powerpc/32/nrv2e_d.S"

#undef hibit

#undef src
#undef lsrc
#undef dst
#undef ldst
#undef meth

#undef off
#undef len
#undef bits
#undef disp

section LZMA
#include "arch/powerpc/32/lzma_d.S"

// ========== IDENT

#include "include/header.S"

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