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Diffstat (limited to 'sysdeps/sparc/sparc64/rawmemchr.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/rawmemchr.S | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/sysdeps/sparc/sparc64/rawmemchr.S b/sysdeps/sparc/sparc64/rawmemchr.S deleted file mode 100644 index d3e7b5d4b4..0000000000 --- a/sysdeps/sparc/sparc64/rawmemchr.S +++ /dev/null @@ -1,178 +0,0 @@ -/* rawmemchr (str, ch) -- Return pointer to first occurrence of CH in STR. - For SPARC v9. - Copyright (C) 1999-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jj@ultra.linux.cz>. - This version is developed using the same algorithm as the fast C - version which carries the following introduction: - Based on strlen implementation by Torbjorn Granlund (tege@sics.se), - with help from Dan Sahlin (dan@sics.se) and - commentary by Jim Blandy (jimb@ai.mit.edu); - adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu), - and implemented by Roland McGrath (roland@ai.mit.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> -#include <asm/asi.h> -#ifndef XCC -#define XCC xcc -#define USE_BPR - .register %g2, #scratch - .register %g3, #scratch -#endif - - /* Normally, this uses - ((xword - 0x0101010101010101) & 0x8080808080808080) 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 - 0x0101010101010101) & (~xword) & 0x8080808080808080), - 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 32 -ENTRY(__rawmemchr) - and %o1, 0xff, %o1 /* IEU0 Group */ - sethi %hi(0x01010101), %g1 /* IEU1 */ - ldub [%o0], %o3 /* Load */ - sll %o1, 8, %o4 /* IEU0 Group */ - - or %g1, %lo(0x01010101), %g1 /* IEU1 */ - sllx %g1, 32, %g2 /* IEU0 Group */ - or %o4, %o1, %o4 /* IEU1 */ - andcc %o0, 7, %g0 /* IEU1 Group */ - - sll %o4, 16, %g5 /* IEU0 */ - or %o4, %g5, %o4 /* IEU0 Group */ - or %g1, %g2, %g1 /* IEU1 */ - bne,pn %icc, 32f /* CTI */ - - sllx %o4, 32, %g5 /* IEU0 Group */ - cmp %o3, %o1 /* IEU1 */ - be,pn %icc, 30f /* CTI */ - sllx %g1, 7, %g2 /* IEU0 Group */ - -18: ldx [%o0], %o3 /* Load */ - or %o4, %g5, %o4 /* IEU1 */ - add %o0, 8, %o0 /* IEU0 Group */ -19: xor %o3, %o4, %o3 /* IEU0 Group */ - - sub %o3, %g1, %o2 /* IEU0 Group */ -#ifdef EIGHTBIT_NOT_RARE - andn %o2, %o3, %o5 /* IEU0 Group */ - ldxa [%o0] ASI_PNF, %o3 /* Load */ - andcc %o5, %g2, %g0 /* IEU1 Group */ -#else - ldxa [%o0] ASI_PNF, %o3 /* Load */ - andcc %o2, %g2, %g0 /* IEU1 Group */ -#endif - be,pt %xcc, 19b /* CTI */ - - add %o0, 8, %o0 /* IEU0 */ - addcc %o2, %g1, %g3 /* IEU1 Group */ - srlx %o2, 32, %o2 /* IEU0 */ -20: andcc %o2, %g2, %g0 /* IEU1 Group */ - - be,pn %xcc, 21f /* CTI */ - srlx %g3, 56, %o2 /* IEU0 */ - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 29f /* CTI */ - - srlx %g3, 48, %o2 /* IEU0 */ - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 28f /* CTI */ - srlx %g3, 40, %o2 /* IEU0 */ - - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 27f /* CTI */ - srlx %g3, 32, %o2 /* IEU0 */ - andcc %o2, 0xff, %g0 /* IEU1 Group */ - - be,pn %icc, 26f /* CTI */ -21: srlx %g3, 24, %o2 /* IEU0 */ - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 25f /* CTI */ - - srlx %g3, 16, %o2 /* IEU0 */ - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 24f /* CTI */ - srlx %g3, 8, %o2 /* IEU0 */ - - andcc %o2, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 23f /* CTI */ - xor %o3, %o4, %o3 /* IEU0 */ - andcc %g3, 0xff, %g0 /* IEU1 Group */ - - be,pn %icc, 22f /* CTI */ - sub %o3, %g1, %o2 /* IEU0 */ - ldxa [%o0] ASI_PNF, %o3 /* Load */ - andcc %o2, %g2, %g0 /* IEU1 Group */ - - be,pt %xcc, 19b /* CTI */ - add %o0, 8, %o0 /* IEU0 */ - addcc %o2, %g1, %g3 /* IEU1 Group */ - ba,pt %xcc, 20b /* CTI */ - - srlx %o2, 32, %o2 /* IEU0 */ - - .align 16 -22: retl /* CTI+IEU1 Group */ - add %o0, -9, %o0 /* IEU0 */ -23: retl /* CTI+IEU1 Group */ - add %o0, -10, %o0 /* IEU0 */ - -24: retl /* CTI+IEU1 Group */ - add %o0, -11, %o0 /* IEU0 */ -25: retl /* CTI+IEU1 Group */ - add %o0, -12, %o0 /* IEU0 */ - -26: retl /* CTI+IEU1 Group */ - add %o0, -13, %o0 /* IEU0 */ -27: retl /* CTI+IEU1 Group */ - add %o0, -14, %o0 /* IEU0 */ - -28: retl /* CTI+IEU1 Group */ - add %o0, -15, %o0 /* IEU0 */ -29: retl /* CTI+IEU1 Group */ - add %o0, -16, %o0 /* IEU0 */ - -30: retl /* CTI+IEU1 Group */ - nop /* IEU0 */ - - .align 16 -32: andcc %o0, 7, %g0 /* IEU1 Group */ - be,a,pn %icc, 18b /* CTI */ - sllx %g1, 7, %g2 /* IEU0 */ - add %o0, 1, %o0 /* IEU0 Group */ - - cmp %o3, %o1 /* IEU1 */ - bne,a,pt %icc, 32b /* CTI */ - lduba [%o0] ASI_PNF, %o3 /* Load */ - retl /* CTI+IEU1 Group */ - - add %o0, -1, %o0 /* IEU0 */ -END(__rawmemchr) - -libc_hidden_def (__rawmemchr) -weak_alias (__rawmemchr, rawmemchr) |