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Diffstat (limited to 'sysdeps/sparc/sparc32/strchr.S')
| -rw-r--r-- | sysdeps/sparc/sparc32/strchr.S | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/sysdeps/sparc/sparc32/strchr.S b/sysdeps/sparc/sparc32/strchr.S deleted file mode 100644 index f934473ea8..0000000000 --- a/sysdeps/sparc/sparc32/strchr.S +++ /dev/null @@ -1,284 +0,0 @@ -/* strchr (str, ch) -- Return pointer to first occurrence of CH in STR. - For SPARC v7. - Copyright (C) 1996-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jj@ultra.linux.cz> and - David S. Miller <davem@caip.rutgers.edu>. - - 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> - - /* Normally, this uses ((xword - 0x01010101) & 0x80808080) test - to find out if any byte in xword could be zero. This is fast, but - also gives false alarm for any byte in range 0x81-0xff. It does - not matter for correctness, as if this test tells us there could - be some zero byte, we check it byte by byte, but if bytes with - high bits set are common in the strings, then this will give poor - performance. You can #define EIGHTBIT_NOT_RARE and the algorithm - will use one tick slower, but more precise test - ((xword - 0x01010101) & (~xword) & 0x80808080), - which does not give any false alarms (but if some bits are set, - one cannot assume from it which bytes are zero and which are not). - It is yet to be measured, what is the correct default for glibc - in these days for an average user. - */ - - .text - .align 4 -ENTRY(strchr) - andcc %o1, 0xff, %o1 - be 12f - sll %o1, 8, %o2 - andcc %o0, 3, %g0 - or %o1, %o2, %o2 - sethi %hi(0x80808080), %o4 - sll %o2, 16, %o3 - be 13f - or %o3, %o2, %g2 - - ldub [%o0], %g4 - cmp %g4, %o1 - be 11f - add %o0, 1, %o0 - cmp %g4, 0 - be 9f - andcc %o0, 3, %g0 - be 4f - or %o4, %lo(0x80808080), %o3 - ldub [%o0], %g4 - cmp %g4, %o1 - be 11f - add %o0, 1, %o0 - cmp %g4, 0 - be 9f - andcc %o0, 3, %g0 - be 5f - sethi %hi(0x01010101), %o5 - ldub [%o0], %g4 - cmp %g4, %o1 - be 11f - add %o0, 1, %o0 - cmp %g4, 0 - be 9f - or %o5, %lo(0x01010101), %o2 - b 6f - ld [%o0], %g4 -11: retl - sub %o0, 1, %o0 - -13: or %o4, %lo(0x80808080), %o3 -4: sethi %hi(0x01010101), %o5 -5: or %o5, %lo(0x01010101), %o2 -7: ld [%o0], %g4 -6: xor %g4, %g2, %g5 - sub %g4, %o2, %o4 -#ifdef EIGHTBIT_NOT_RARE - sub %g5, %o2, %g6 - andn %o4, %g4, %o4 - andn %g6, %g5, %g5 -#else - sub %g5, %o2, %g5 -#endif - or %g5, %o4, %o4 - andcc %o4, %o3, %g0 - be 7b - add %o0, 4, %o0 - - /* Check every byte. */ -8: srl %g4, 24, %g5 -7: andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be 4f - srl %g4, 16, %g5 - andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be 3f - srl %g4, 8, %g5 - andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be 2f - andcc %g4, 0xff, %g5 - be 9f - cmp %g5, %o1 - bne,a 6b - ld [%o0], %g4 - retl - sub %o0, 1, %o0 -2: retl - sub %o0, 2, %o0 -3: retl - sub %o0, 3, %o0 -4: retl - sub %o0, 4, %o0 -9: retl - clr %o0 - -11: ldub [%o0], %o5 - cmp %o5, 0 - be 1f - add %o0, 1, %o0 - andcc %o0, 3, %g0 - be 4f - or %o4, %lo(0x80808080), %o3 - ldub [%o0], %o5 - cmp %o5, 0 - be 1f - add %o0, 1, %o0 - andcc %o0, 3, %g0 - be 5f - sethi %hi(0x01010101), %o4 - ldub [%o0], %o5 - cmp %o5, 0 - be 1f - add %o0, 1, %o0 - b 6f - or %o4, %lo(0x01010101), %o2 -1: retl - sub %o0, 1, %o0 - -12: andcc %o0, 3, %g0 - bne 11b - sethi %hi(0x80808080), %o4 - or %o4, %lo(0x80808080), %o3 -4: sethi %hi(0x01010101), %o4 -5: or %o4, %lo(0x01010101), %o2 -6: ld [%o0], %o5 -7: sub %o5, %o2, %o4 -#ifdef EIGHTBIT_NOT_RARE - andn %o4, %o5, %o4 -#endif - andcc %o4, %o3, %g0 - be 6b - add %o0, 4, %o0 - - /* Check every byte. */ - srl %o5, 24, %g5 - andcc %g5, 0xff, %g0 - be 8f - add %o0, -4, %o4 - srl %o5, 16, %g5 - andcc %g5, 0xff, %g0 - be 8f - add %o4, 1, %o4 - srl %o5, 8, %g5 - andcc %g5, 0xff, %g0 - be 8f - add %o4, 1, %o4 - andcc %o5, 0xff, %g0 - bne,a 7b - ld [%o0], %o5 - add %o4, 1, %o4 -8: retl - mov %o4, %o0 - -13: ldub [%o0], %g4 - cmp %g4, %o1 - add %o0, 1, %o0 - be,a 1f - sub %o0, 1, %o5 - cmp %g4, 0 - be 9f -1: andcc %o0, 3, %g0 - be 4f - or %o4, %lo(0x80808080), %o3 - ldub [%o0], %g4 - cmp %g4, %o1 - add %o0, 1, %o0 - be,a 1f - sub %o0, 1, %o5 - cmp %g4, 0 - be 9f -1: andcc %o0, 3, %g0 - be 5f - sethi %hi(0x01010101), %o4 - ldub [%o0], %g4 - cmp %g4, %o1 - add %o0, 1, %o0 - be,a 1f - sub %o0, 1, %o5 - cmp %g4, 0 - be 9f -1: or %o4, %lo(0x01010101), %o2 - b 7f - ld [%o0], %g4 -END(strchr) - -ENTRY(strrchr) - andcc %o1, 0xff, %o1 - clr %o5 - be 12b - sll %o1, 8, %o2 - andcc %o0, 3, %g0 - or %o1, %o2, %o2 - sethi %hi(0x80808080), %o4 - sll %o2, 16, %o3 - bne 13b - or %o3, %o2, %g2 - or %o4, %lo(0x80808080), %o3 -4: sethi %hi(0x01010101), %o4 -5: or %o4, %lo(0x01010101), %o2 -6: ld [%o0], %g4 -7: xor %g4, %g2, %g5 - sub %g4, %o2, %o4 -#ifdef EIGHTBIT_NOT_RARE - sub %g5, %o2, %g6 - andn %o4, %g4, %o4 - andn %g6, %g5, %g5 -#else - sub %g5, %o2, %g5 -#endif - or %g5, %o4, %o4 - andcc %o4, %o3, %g0 - be 6b - add %o0, 4, %o0 - - /* Check every byte. */ -3: srl %g4, 24, %g5 -8: andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be,a 1f - sub %o0, 4, %o5 -1: srl %g4, 16, %g5 - andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be,a 1f - sub %o0, 3, %o5 -1: srl %g4, 8, %g5 - andcc %g5, 0xff, %g5 - be 9f - cmp %g5, %o1 - be,a 1f - sub %o0, 2, %o5 -1: andcc %g4, 0xff, %g5 - be 9f - cmp %g5, %o1 - be,a 1f - sub %o0, 1, %o5 -1: b 7b - ld [%o0], %g4 -9: retl - mov %o5, %o0 -END(strrchr) - -weak_alias (strchr, index) -weak_alias (strrchr, rindex) -libc_hidden_builtin_def (strchr) -libc_hidden_builtin_def (strrchr) |