diff options
Diffstat (limited to 'strings/bcmp.c')
| -rw-r--r-- | strings/bcmp.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/strings/bcmp.c b/strings/bcmp.c new file mode 100644 index 00000000000..3dce5025b64 --- /dev/null +++ b/strings/bcmp.c @@ -0,0 +1,63 @@ +/* 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 */ + +/* + bcmp(s1, s2, len) returns 0 if the "len" bytes starting at "s1" are + identical to the "len" bytes starting at "s2", non-zero if they are + different. + Now only used with purify. +*/ + +#include <global.h> +#include "m_string.h" + +#if !defined(bcmp) && !defined(HAVE_BCMP) + +#if defined(MC68000) && defined(DS90) + +int bcmp(s1,s2, len) +const char *s1; +const char *s2; +uint len; /* 0 <= len <= 65535 */ +{ + asm(" movl 12(a7),d0 "); + asm(" subqw #1,d0 "); + asm(" blt .L5 "); + asm(" movl 4(a7),a1 "); + asm(" movl 8(a7),a0 "); + asm(".L4: cmpmb (a0)+,(a1)+ "); + asm(" dbne d0,.L4 "); + asm(".L5: addqw #1,d0 "); +} + +#else + +#ifdef HAVE_purify +int my_bcmp(s1, s2, len) +#else +int bcmp(s1, s2, len) +#endif + register const char *s1; + register const char *s2; + register uint len; +{ + while (len-- != 0 && *s1++ == *s2++) ; + return len+1; +} + +#endif +#endif /* BSD_FUNCS */ |