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-rw-r--r--REORG.TODO/sysdeps/sparc/sparc64/strlen.S85
1 files changed, 85 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc64/strlen.S b/REORG.TODO/sysdeps/sparc/sparc64/strlen.S
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+++ b/REORG.TODO/sysdeps/sparc/sparc64/strlen.S
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+/* Determine the length of a string. For SPARC v9.
+ Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz>,
+ Jakub Jelinek <jj@ultra.linux.cz>, and
+ David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+
+ .register %g2, #scratch
+ .register %g3, #scratch
+
+ .text
+ .align 32
+ENTRY(strlen)
+ mov %o0, %o1
+ andn %o0, 0x7, %o0
+
+ ldx [%o0], %o5
+ and %o1, 0x7, %g1
+ mov -1, %g5
+
+ sethi %hi(0x01010101), %o2
+ sll %g1, 3, %g1
+
+ or %o2, %lo(0x01010101), %o2
+ srlx %g5, %g1, %o3
+
+ sllx %o2, 32, %g1
+ sethi %hi(0x0000ff00), %g5
+
+ orn %o5, %o3, %o5
+ or %o2, %g1, %o2
+
+ sllx %o2, 7, %o3
+10: add %o0, 8, %o0
+
+ andn %o3, %o5, %g1
+ sub %o5, %o2, %g2
+
+ andcc %g1, %g2, %g0
+ be,a,pt %xcc, 10b
+ ldx [%o0], %o5
+ srlx %o5, 32, %g1
+
+ andn %o3, %g1, %o4
+ sub %g1, %o2, %g2
+
+ add %o0, 4, %g3
+ andcc %o4, %g2, %g0
+ movne %icc, %g1, %o5
+
+ move %icc, %g3, %o0
+ or %g5, %lo(0x0000ff00), %g5
+ mov 3 - 8, %g2
+
+ andcc %o5, %g5, %g0
+ srlx %o5, 16, %g1
+ move %icc, 2 - 8, %g2
+
+ andcc %g1, 0xff, %g0
+ srl %o5, 24, %o5
+ move %icc, 1 - 8, %g2
+
+ movrz %o5, 0 - 8, %g2
+ sub %o0, %o1, %o0
+
+ retl
+ add %o0, %g2, %o0
+END(strlen)
+libc_hidden_builtin_def (strlen)