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annotate zlib/contrib/masmx86/gvmat32c.c @ 51:ae3a4bfb450b

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add some files of version 4.4.3 that have been forgotten.
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Sun, 07 Feb 2010 18:27:48 +0900
parents
children
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51
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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1 /* gvmat32.c -- C portion of the optimized longest_match for 32 bits x86
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
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2 * Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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3 * File written by Gilles Vollant, by modifiying the longest_match
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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4 * from Jean-loup Gailly in deflate.c
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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5 * it prepare all parameters and call the assembly longest_match_gvasm
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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6 * longest_match execute standard C code is wmask != 0x7fff
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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7 * (assembly code is faster with a fixed wmask)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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8 *
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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9 * Read comment at beginning of gvmat32.asm for more information
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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10 */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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11
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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12 #if defined(ASMV) && (!defined(NOOLDPENTIUMCODE))
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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13 #include "deflate.h"
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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14
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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15 /* if your C compiler don't add underline before function name,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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16 define ADD_UNDERLINE_ASMFUNC */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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17 #ifdef ADD_UNDERLINE_ASMFUNC
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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18 #define longest_match_7fff _longest_match_7fff
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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19 #define longest_match_686 _longest_match_686
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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20 #define cpudetect32 _cpudetect32
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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21 #endif
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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22
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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23
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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24 unsigned long cpudetect32();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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25
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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26 uInt longest_match_c(
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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27 deflate_state *s,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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28 IPos cur_match); /* current match */
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29
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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30
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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31 uInt longest_match_7fff(
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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32 deflate_state *s,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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33 IPos cur_match); /* current match */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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34
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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35 uInt longest_match_686(
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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36 deflate_state *s,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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37 IPos cur_match); /* current match */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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38
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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39
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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40 static uInt iIsPPro=2;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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41
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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42 void match_init ()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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43 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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44 iIsPPro = (((cpudetect32()/0x100)&0xf)>=6) ? 1 : 0;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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45 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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46
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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47 uInt longest_match(
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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48 deflate_state *s,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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49 IPos cur_match) /* current match */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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50 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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51 if (iIsPPro!=0)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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52 return longest_match_686(s,cur_match);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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53
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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54 if (s->w_mask != 0x7fff)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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55 return longest_match_686(s,cur_match);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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56
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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57 /* now ((s->w_mask == 0x7fff) && (iIsPPro==0)) */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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58 return longest_match_7fff(s,cur_match);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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59 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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60
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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61
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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62 #endif /* defined(ASMV) && (!defined(NOOLDPENTIUMCODE)) */