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Diffstat (limited to 'strings/bmove512.c')
| -rw-r--r-- | strings/bmove512.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/strings/bmove512.c b/strings/bmove512.c new file mode 100644 index 00000000000..4b0c3f5c1cb --- /dev/null +++ b/strings/bmove512.c @@ -0,0 +1,129 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA */ + +/* File : bmove512.c + Author : Michael Widenius; + Defines: bmove512() + + bmove512(dst, src, len) moves exactly "len" bytes from the source "src" + to the destination "dst". "src" and "dst" must be alligned on long + boundory and len must be a mutliple of 512 byte. If len is not a + multiple of 512 byte len/512*512+1 bytes is copyed. + bmove512 is moustly used to copy IO_BLOCKS. bmove512 should be the + fastest way to move a mutiple of 512 byte. +*/ + +#include <global.h> +#include "m_string.h" + +#ifndef bmove512 + +#ifdef HAVE_LONG_LONG +#define LONG ulonglong +#else +#define LONG ulonglong +#endif + +void bmove512(register gptr to, register const gptr from, register uint length) +{ + reg1 LONG *f,*t; + reg3 int len; + + f= (LONG*) from; + t= (LONG*) to; + len= (int) length; + +#if defined(m88k) || defined(sparc) || defined(HAVE_LONG_LONG) + do { + t[0]=f[0]; t[1]=f[1]; t[2]=f[2]; t[3]=f[3]; + t[4]=f[4]; t[5]=f[5]; t[6]=f[6]; t[7]=f[7]; + t[8]=f[8]; t[9]=f[9]; t[10]=f[10]; t[11]=f[11]; + t[12]=f[12]; t[13]=f[13]; t[14]=f[14]; t[15]=f[15]; + t[16]=f[16]; t[17]=f[17]; t[18]=f[18]; t[19]=f[19]; + t[20]=f[20]; t[21]=f[21]; t[22]=f[22]; t[23]=f[23]; + t[24]=f[24]; t[25]=f[25]; t[26]=f[26]; t[27]=f[27]; + t[28]=f[28]; t[29]=f[29]; t[30]=f[30]; t[31]=f[31]; + t[32]=f[32]; t[33]=f[33]; t[34]=f[34]; t[35]=f[35]; + t[36]=f[36]; t[37]=f[37]; t[38]=f[38]; t[39]=f[39]; + t[40]=f[40]; t[41]=f[41]; t[42]=f[42]; t[43]=f[43]; + t[44]=f[44]; t[45]=f[45]; t[46]=f[46]; t[47]=f[47]; + t[48]=f[48]; t[49]=f[49]; t[50]=f[50]; t[51]=f[51]; + t[52]=f[52]; t[53]=f[53]; t[54]=f[54]; t[55]=f[55]; + t[56]=f[56]; t[57]=f[57]; t[58]=f[58]; t[59]=f[59]; + t[60]=f[60]; t[61]=f[61]; t[62]=f[62]; t[63]=f[63]; +#ifdef HAVE_LONG_LONG + t+=64; f+=64; +#else + t[64]=f[64]; t[65]=f[65]; t[66]=f[66]; t[67]=f[67]; + t[68]=f[68]; t[69]=f[69]; t[70]=f[70]; t[71]=f[71]; + t[72]=f[72]; t[73]=f[73]; t[74]=f[74]; t[75]=f[75]; + t[76]=f[76]; t[77]=f[77]; t[78]=f[78]; t[79]=f[79]; + t[80]=f[80]; t[81]=f[81]; t[82]=f[82]; t[83]=f[83]; + t[84]=f[84]; t[85]=f[85]; t[86]=f[86]; t[87]=f[87]; + t[88]=f[88]; t[89]=f[89]; t[90]=f[90]; t[91]=f[91]; + t[92]=f[92]; t[93]=f[93]; t[94]=f[94]; t[95]=f[95]; + t[96]=f[96]; t[97]=f[97]; t[98]=f[98]; t[99]=f[99]; + t[100]=f[100]; t[101]=f[101]; t[102]=f[102]; t[103]=f[103]; + t[104]=f[104]; t[105]=f[105]; t[106]=f[106]; t[107]=f[107]; + t[108]=f[108]; t[109]=f[109]; t[110]=f[110]; t[111]=f[111]; + t[112]=f[112]; t[113]=f[113]; t[114]=f[114]; t[115]=f[115]; + t[116]=f[116]; t[117]=f[117]; t[118]=f[118]; t[119]=f[119]; + t[120]=f[120]; t[121]=f[121]; t[122]=f[122]; t[123]=f[123]; + t[124]=f[124]; t[125]=f[125]; t[126]=f[126]; t[127]=f[127]; + t+=128; f+=128; +#endif + } while ((len-=512) > 0); +#else + do { + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + *t++ = *f++; *t++ = *f++; *t++ = *f++; *t++ = *f++; + } while ((len-=512) > 0); +#endif + return; +} /* bmove512 */ + +#endif /* bmove512 */ |