/* lzo1c_d.ash -- assembler implementation of the LZO1C decompression algorithm

   This file is part of the LZO real-time data compression library.

   Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer

   Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer

   All Rights Reserved.

   The LZO library 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 2 of

   the License, or (at your option) any later version.

   The LZO library 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 the LZO library; see the file COPYING.

   If not, write to the Free Software Foundation, Inc.,

   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

   Markus F.X.J. Oberhumer

   <markus@oberhumer.com></markus@oberhumer.com>

   http://www.oberhumer.com/opensource/lzo/

 */

/***********************************************************************

//

************************************************************************/

        ALIGN3

.L1:

        xorl    %eax,%eax

        movb    (%esi),%al

        incl    %esi

        cmpb    $32,%al

        jnb     .LMATCH

        orb     %al,%al

        jz      .L12

        movl    %eax,%ecx

.LIT:

        TEST_OP((%edi,%ecx),%ebx)

        TEST_IP((%esi,%ecx),%ebx)

        rep

        movsb

.LM1:

        movb    (%esi),%al

        incl    %esi

        cmpb    $32,%al

        jb      .LM2

.LMATCH:

        cmpb    $64,%al

        jb      .LN3

        movl    %eax,%ecx

        andb    $31,%al

        leal    -1(%edi),%edx

        shrl    $5,%ecx

        subl    %eax,%edx

        movb    (%esi),%al

        incl    %esi

        shll    $5,%eax

        subl    %eax,%edx

        incl    %ecx

        xchgl   %esi,%edx

        TEST_LOOKBEHIND(%esi)

        TEST_OP((%edi,%ecx),%ebx)

        rep

        movsb

        movl    %edx,%esi

        jmp     .L1

        ALIGN3

.L12:

        LODSB

        leal    32(%eax),%ecx

        cmpb    $248,%al

        jb      .LIT

        movl    $280,%ecx

        subb    $248,%al

        jz      .L11

        xchgl   %eax,%ecx

        xorb    %al,%al

        shll    %cl,%eax

        xchgl   %eax,%ecx

.L11:

        TEST_OP((%edi,%ecx),%ebx)

        TEST_IP((%esi,%ecx),%ebx)

        rep

        movsb

        jmp     .L1

        ALIGN3

.LM2:

        leal    -1(%edi),%edx

        subl    %eax,%edx

        LODSB

        shll    $5,%eax

        subl    %eax,%edx

        xchgl   %esi,%edx

        TEST_LOOKBEHIND(%esi)

        TEST_OP(4(%edi),%ebx)

        movsb

        movsb

        movsb

        movl    %edx,%esi

        movsb

        xorl    %eax,%eax

        jmp     .LM1

.LN3:

        andb    $31,%al

        movl    %eax,%ecx

        jnz     .LN6

        movb    $31,%cl

.LN4:

        LODSB

        orb     %al,%al

        jnz     .LN5

        addl    N_255,%ecx

        jmp     .LN4

        ALIGN3

.LN5:

        addl    %eax,%ecx

.LN6:

        movb    (%esi),%al

        incl    %esi

        movl    %eax,%ebx

        andb    $63,%al

        movl    %edi,%edx

        subl    %eax,%edx

        movb    (%esi),%al

        incl    %esi

        shll    $6,%eax

        subl    %eax,%edx

        cmpl    %edi,%edx

        jz      .LEOF

        xchgl   %edx,%esi

        leal    3(%ecx),%ecx

        TEST_LOOKBEHIND(%esi)

        TEST_OP((%edi,%ecx),%eax)

        rep

        movsb

        movl    %edx,%esi

        xorl    %eax,%eax

        shrl    $6,%ebx

        movl    %ebx,%ecx

        jnz     .LIT

        jmp     .L1

.LEOF:

/****   xorl    %eax,%eax          eax=0 from above */

        cmpl    $1,%ecx         /* ecx must be 1 */

        setnz   %al

/*

vi:ts=4

*/