From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- zlib/contrib/masmx86/gvmat32c.c | 62 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 zlib/contrib/masmx86/gvmat32c.c (limited to 'zlib/contrib/masmx86/gvmat32c.c') diff --git a/zlib/contrib/masmx86/gvmat32c.c b/zlib/contrib/masmx86/gvmat32c.c new file mode 100644 index 000000000..7ad2b2794 --- /dev/null +++ b/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)) */ -- cgit v1.2.3