Changeset 445 in xtideuniversalbios for trunk/Assembly_Library/Src/Util


Ignore:
Timestamp:
Aug 29, 2012, 12:59:23 PM (12 years ago)
Author:
krille_n_@…
google:author:
krille_n_@hotmail.com
Message:

Changes:

  • A speed optimization to the eSHL_IM macro for 386 and higher. This change breaks emulation in the sense that the macro will fail when given a memory operand as the first parameter.
  • Memory_SumCXbytesFromESSItoAL now returns with the zero flag set/cleared according to the result.
  • Unrolled all the 8 bit READ transfer loops to do 16 bytes per iteration. Added a new macro (UNROLL_SECTORS_IN_CX_TO_OWORDS) as part of it. Size wise this is expensive but I think it should be worth the ROM space. The WRITE transfer loops were left as is since writes are rare anyway (<10% of all disk I/O IIRC).
  • Minor optimizations and fixes here and there.
Location:
trunk/Assembly_Library/Src/Util
Files:
2 edited

Legend:

Unmodified
Added
Removed

  • trunk/Assembly_Library/Src/Util/Memory.asm

    r440 r445  
    33
    44;
    5 ; XTIDE Universal BIOS and Associated Tools 
     5; XTIDE Universal BIOS and Associated Tools
    66; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
    77;
    … …  
    1010; the Free Software Foundation; either version 2 of the License, or
    1111; (at your option) any later version.
    12 ; 
     12;
    1313; This program is distributed in the hope that it will be useful,
    1414; but WITHOUT ANY WARRANTY; without even the implied warranty of
    1515; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16 ; GNU General Public License for more details.     
     16; GNU General Public License for more details.
    1717; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    18 ;       
     18;
    1919
    2020; Section containing code
    … …  
    151151;   Returns:
    152152;       AL:     Sum of bytes
     153;       ZF:     Set if result is zero
     154;               Cleared if result is non-zero
    153155;   Corrupts registers:
    154156;       CX
    155157;--------------------------------------------------------------------
     158%ifndef EXCLUDE_FROM_XTIDECFG
    156159ALIGN JUMP_ALIGN
    157160Memory_SumCXbytesFromESSItoAL:
    158161    push    si
     162    dec     si
    159163    xor     al, al
    160164ALIGN JUMP_ALIGN
    161165.AddNextByteToAL:
     166    inc     si
    162167    add     al, [es:si]
    163     inc     si
    164168    loop    .AddNextByteToAL
    165169    pop     si
    166170    ret
     171%endif

  • trunk/Assembly_Library/Src/Util/Sort.asm

    r376 r445  
    77
    88;
    9 ; XTIDE Universal BIOS and Associated Tools 
     9; XTIDE Universal BIOS and Associated Tools
    1010; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
    1111;
    … …  
    1414; the Free Software Foundation; either version 2 of the License, or
    1515; (at your option) any later version.
    16 ; 
     16;
    1717; This program is distributed in the hope that it will be useful,
    1818; but WITHOUT ANY WARRANTY; without even the implied warranty of
    1919; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    20 ; GNU General Public License for more details.     
     20; GNU General Public License for more details.
    2121; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    22 ;       
     22;
    2323
    2424; Algorith is from http://www.algolist.net/Algorithms/Sorting/Quicksort
    … …  
    6262    push    di
    6363    mov     di, cx
    64     shl     cx, 1                       ; Reserve temp and pivot items
     64    eSHL_IM cx, 1                       ; Reserve temp and pivot items
    6565    add     cx, BYTE QSORT_PARAMS_size
    6666    eENTER_STRUCT cx
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