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author | Karl Berry <karl@freefriends.org> | 2006-01-16 00:09:26 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2006-01-16 00:09:26 +0000 |
commit | 6c0eafbb1395d426a72a74538e0b2a95e8344ca6 (patch) | |
tree | 2a5f80b80fc76086a2602b812c2a182d00f961b7 /Build/source/libs/zlib/contrib/masmx86/gvmat32c.c | |
parent | 70f7efeb5c9965a63a4143ad1c1f473585dc364c (diff) |
libs 1
git-svn-id: svn://tug.org/texlive/trunk@1483 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/zlib/contrib/masmx86/gvmat32c.c')
-rw-r--r-- | Build/source/libs/zlib/contrib/masmx86/gvmat32c.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Build/source/libs/zlib/contrib/masmx86/gvmat32c.c b/Build/source/libs/zlib/contrib/masmx86/gvmat32c.c new file mode 100644 index 00000000000..89f525cd502 --- /dev/null +++ b/Build/source/libs/zlib/contrib/masmx86/gvmat32c.c @@ -0,0 +1,62 @@ +/* gvmat32.c -- C portion of the optimized longest_match for 32 bits x86 + * Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant. + * File written by Gilles Vollant, by modifiying the longest_match + * from Jean-loup Gailly in deflate.c + * it prepare all parameters and call the assembly longest_match_gvasm + * longest_match execute standard C code is wmask != 0x7fff + * (assembly code is faster with a fixed wmask) + * + * Read comment at beginning of gvmat32.asm for more information + */ + +#if defined(ASMV) && (!defined(NOOLDPENTIUMCODE)) +#include "deflate.h" + +/* if your C compiler don't add underline before function name, + define ADD_UNDERLINE_ASMFUNC */ +#ifdef ADD_UNDERLINE_ASMFUNC +#define longest_match_7fff _longest_match_7fff +#define longest_match_686 _longest_match_686 +#define cpudetect32 _cpudetect32 +#endif + + +unsigned long cpudetect32(); + +uInt longest_match_c( + deflate_state *s, + IPos cur_match); /* current match */ + + +uInt longest_match_7fff( + deflate_state *s, + IPos cur_match); /* current match */ + +uInt longest_match_686( + deflate_state *s, + IPos cur_match); /* current match */ + + +static uInt iIsPPro=2; + +void match_init () +{ + iIsPPro = (((cpudetect32()/0x100)&0xf)>=6) ? 1 : 0; +} + +uInt longest_match( + deflate_state *s, + IPos cur_match) /* current match */ +{ + if (iIsPPro!=0) + return longest_match_686(s,cur_match); + + if (s->w_mask != 0x7fff) + return longest_match_686(s,cur_match); + + /* now ((s->w_mask == 0x7fff) && (iIsPPro==0)) */ + return longest_match_7fff(s,cur_match); +} + + +#endif /* defined(ASMV) && (!defined(NOOLDPENTIUMCODE)) */ |