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authorUlrich Drepper <drepper@redhat.com>2000-05-21 22:04:15 +0000
committerUlrich Drepper <drepper@redhat.com>2000-05-21 22:04:15 +0000
commit5bfc425236ac2105b8642715db83fe39f55640d2 (patch)
tree1bbabd86dcd7381b1bea6ab451a0848415d65220 /sysdeps/ia64/strcmp.S
parent99a206167bd94400d129991e1ec257820eb6df00 (diff)
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Update.
* sysdeps/ia64/memccpy.S: New file. * sysdeps/ia64/memchr.S: New file. * sysdeps/ia64/memcmp.S: New file. * sysdeps/ia64/memcpy.S: New file. * sysdeps/ia64/memmove.S: New file. * sysdeps/ia64/memset.S: New file. * sysdeps/ia64/strcat.S: New file. * sysdeps/ia64/strchr.S: New file. * sysdeps/ia64/strcmp.S: New file. * sysdeps/ia64/strcpy.S: New file. * sysdeps/ia64/strlen.S: New file. * sysdeps/ia64/strncmp.S: New file. * sysdeps/ia64/strncpy.S: New file. * sysdeps/ia64/softpipe.h: New file. Patches by Dan Pop <Dan.Pop@cern.ch>. * manual/memory.texi: Document memory handling functions (mlock, munlock, mlockall, munlockall, brk, and sbrk)
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diff --git a/sysdeps/ia64/strcmp.S b/sysdeps/ia64/strcmp.S
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+/* Optimized version of the standard strcmp() function.
+ This file is part of the GNU C Library.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ Contributed by Dan Pop <Dan.Pop@cern.ch>.
+
+ The GNU C 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.
+
+ The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Return: the result of the comparison
+
+ Inputs:
+ in0: s1
+ in1: s2
+
+ Unlike memcmp(), this function is optimized for mismatches within the
+ first few characters. */
+
+#include <sysdep.h>
+#undef ret
+
+#define s1 in0
+#define s2 in1
+
+#define saved_pfs r14
+#define val1 r15
+#define val2 r16
+
+
+ENTRY(strcmp)
+ alloc saved_pfs = ar.pfs, 2, 0, 0, 0
+.loop:
+ ld1 val1 = [s1], 1
+ ld1 val2 = [s2], 1
+ cmp.eq p6, p0 = r0, r0 // set p6
+ ;;
+ cmp.ne.and p6, p0 = val1, r0
+ cmp.ne.and p6, p0 = val2, r0
+ cmp.eq.and p6, p0 = val1, val2
+(p6) br.cond.sptk .loop
+ sub ret0 = val1, val2
+ mov ar.pfs = saved_pfs
+ br.ret.sptk.many b0
+END(strcmp)