diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/strncmp.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/strncmp.S | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/sysdeps/sparc/sparc64/strncmp.S b/sysdeps/sparc/sparc64/strncmp.S deleted file mode 100644 index f0af16155b..0000000000 --- a/sysdeps/sparc/sparc64/strncmp.S +++ /dev/null @@ -1,363 +0,0 @@ -/* Compare no more than N characters of S1 and S2, returning less than, - equal to or greater than zero if S1 is lexicographically less than, - equal to or greater than S2. - For SPARC v9. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and - Jakub Jelinek <jj@ultra.linux.cz>. - - 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 - .register %g6, #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(strncmp) -#ifdef USE_BPR - brz,pn %o2, 4f /* CTI+IEU1 Group */ -#else - tst %o2 /* IEU1 Group */ - be,pn %XCC, 4f /* CTI */ -#endif - sethi %hi(0x1010101), %g1 /* IEU0 */ - andcc %o0, 7, %g0 /* IEU1 Group */ - bne,pn %icc, 9f /* CTI */ - - or %g1, %lo(0x1010101), %g1 /* IEU0 */ - andcc %o1, 7, %g3 /* IEU1 Group */ - bne,pn %icc, 11f /* CTI */ - sllx %g1, 32, %g2 /* IEU0 */ - - ldx [%o0], %g4 /* Load Group */ - or %g1, %g2, %g1 /* IEU0 */ -1: ldx [%o1], %o3 /* Load Group */ - sllx %g1, 7, %g2 /* IEU0 */ - - add %o0, 8, %o0 /* IEU1 */ -2: subcc %o2, 8, %o2 /* IEU1 Group */ - bcs,pn %XCC, 5f /* CTI */ - add %o1, 8, %o1 /* IEU0 */ - - sub %g4, %g1, %g3 /* IEU0 Group */ - subcc %g4, %o3, %o4 /* IEU1 */ -#ifdef EIGHTBIT_NOT_RARE - andn %g3, %g4, %g6 /* IEU0 Group */ -#endif - bne,pn %xcc, 6f /* CTI */ - ldxa [%o0] ASI_PNF, %g4 /* Load Group */ - - add %o0, 8, %o0 /* IEU0 */ -#ifdef EIGHTBIT_NOT_RARE - andcc %g6, %g2, %g0 /* IEU1 */ -#else - andcc %g3, %g2, %g0 /* IEU1 */ -#endif - be,a,pt %xcc, 2b /* CTI */ - ldxa [%o1] ASI_PNF, %o3 /* Load Group */ - - addcc %g3, %g1, %o4 /* IEU1 */ -#ifdef EIGHTBIT_NOT_RARE - srlx %g6, 32, %g6 /* IEU0 */ - andcc %g6, %g2, %g0 /* IEU1 Group */ -#else - srlx %g3, 32, %g3 /* IEU0 */ - andcc %g3, %g2, %g0 /* IEU1 Group */ -#endif - be,pt %xcc, 3f /* CTI */ - - srlx %o4, 56, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4f /* CTI */ - srlx %o4, 48, %o5 /* IEU0 */ - - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4f /* CTI */ - srlx %o4, 40, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - - be,pn %icc, 4f /* CTI */ - srlx %o4, 32, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4f /* CTI */ - -3: srlx %o4, 24, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4f /* CTI */ - srlx %o4, 16, %o5 /* IEU0 */ - - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4f /* CTI */ - srlx %o4, 8, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - - be,pn %icc, 4f /* CTI */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - bne,a,pn %icc, 2b /* CTI */ - ldxa [%o1] ASI_PNF, %o3 /* Load */ - -4: retl /* CTI+IEU1 Group */ - clr %o0 /* IEU0 */ - - .align 16 -5: srlx %g4, 56, %o4 /* IEU0 Group */ - cmp %o2, -8 /* IEU1 */ - be,pn %XCC, 4b /* CTI */ - srlx %o3, 56, %o5 /* IEU0 Group */ - - andcc %o4, 0xff, %g0 /* IEU1 */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 48, %o5 /* IEU0 */ - cmp %o2, -7 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 48, %o4 /* IEU0 */ - - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 40, %o5 /* IEU0 */ - cmp %o2, -6 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 40, %o4 /* IEU0 */ - - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 32, %o5 /* IEU0 */ - cmp %o2, -5 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 32, %o4 /* IEU0 */ - - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 24, %o5 /* IEU0 */ - cmp %o2, -4 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 24, %o4 /* IEU0 */ - - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 16, %o5 /* IEU0 */ - cmp %o2, -3 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 16, %o4 /* IEU0 */ - - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - - srlx %o3, 8, %o5 /* IEU0 */ - cmp %o2, -2 /* IEU1 Group */ - be,pn %XCC, 4b /* CTI */ - srlx %g4, 8, %o4 /* IEU0 */ - - retl /* CTI+IEU1 Group */ - sub %o4, %o5, %o0 /* IEU0 */ -6: addcc %o3, %o4, %g4 /* IEU1 */ -7: srlx %o3, 56, %o5 /* IEU0 */ - - srlx %g4, 56, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 48, %o5 /* IEU0 */ - srlx %g4, 48, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 40, %o5 /* IEU0 */ - - srlx %g4, 40, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 32, %o5 /* IEU0 */ - srlx %g4, 32, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 24, %o5 /* IEU0 */ - - srlx %g4, 24, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 16, %o5 /* IEU0 */ - srlx %g4, 16, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - bne,pn %xcc, 8f /* CTI */ - srlx %o3, 8, %o5 /* IEU0 */ - - srlx %g4, 8, %o4 /* IEU0 Group */ - andcc %o4, 0xff, %g0 /* IEU1 Group */ - be,pn %xcc, 8f /* CTI */ - subcc %o4, %o5, %o4 /* IEU1 Group */ - - retl /* CTI+IEU1 Group */ - sub %g4, %o3, %o0 /* IEU0 */ -8: retl /* CTI+IEU1 Group */ - mov %o4, %o0 /* IEU0 */ - -9: ldub [%o0], %g4 /* Load Group */ - add %o0, 1, %o0 /* IEU0 */ - ldub [%o1], %o3 /* Load Group */ - sllx %g1, 32, %g2 /* IEU0 */ - -10: subcc %o2, 1, %o2 /* IEU1 Group */ - be,pn %XCC, 8b /* CTI */ - sub %g4, %o3, %o4 /* IEU0 */ - add %o1, 1, %o1 /* IEU0 Group */ - - cmp %g4, %o3 /* IEU1 */ - bne,pn %xcc, 8b /* CTI */ - lduba [%o0] ASI_PNF, %g4 /* Load Group */ - andcc %o3, 0xff, %g0 /* IEU1 */ - - be,pn %icc, 4b /* CTI */ - lduba [%o1] ASI_PNF, %o3 /* Load Group */ - andcc %o0, 7, %g0 /* IEU1 */ - bne,a,pn %icc, 10b /* CTI */ - - add %o0, 1, %o0 /* IEU0 Group */ - or %g1, %g2, %g1 /* IEU1 */ - andcc %o1, 7, %g3 /* IEU1 Group */ - be,pn %icc, 1b /* CTI */ - - ldxa [%o0] ASI_PNF, %g4 /* Load */ -11: sllx %g3, 3, %g5 /* IEU0 Group */ - mov 64, %g6 /* IEU1 */ - or %g1, %g2, %g1 /* IEU0 Group */ - sub %o1, %g3, %o1 /* IEU1 */ - - sub %g6, %g5, %g6 /* IEU0 Group */ - ldxa [%o1] ASI_PNF, %o4 /* Load */ - sllx %g1, 7, %g2 /* IEU1 */ - add %o1, 8, %o1 /* IEU0 Group */ - /* %g1 = 0101010101010101 - %g2 = 8080808080808080 - %g3 = %o1 alignment - %g5 = number of bits to shift left - %g6 = number of bits to shift right */ - -12: sllx %o4, %g5, %o3 /* IEU0 Group */ - ldxa [%o1] ASI_PNF, %o4 /* Load */ - add %o1, 8, %o1 /* IEU1 */ -13: ldxa [%o0] ASI_PNF, %g4 /* Load Group */ - - addcc %o0, 8, %o0 /* IEU1 */ - srlx %o4, %g6, %o5 /* IEU0 */ - subcc %o2, 8, %o2 /* IEU1 Group */ - bcs,pn %XCC, 5b /* CTI */ - - or %o3, %o5, %o3 /* IEU0 */ - cmp %g4, %o3 /* IEU1 Group */ - bne,pn %xcc, 7b /* CTI */ - sub %g4, %g1, %o5 /* IEU0 */ - -#ifdef EIGHTBIT_NOT_RARE - andn %o5, %g4, %o5 /* IEU0 Group */ -#endif - andcc %o5, %g2, %g0 /* IEU1 Group */ - be,pt %xcc, 12b /* CTI */ - srlx %o5, 32, %o5 /* IEU0 */ - andcc %o5, %g2, %g0 /* IEU1 Group */ - - be,pt %xcc, 14f /* CTI */ - srlx %g4, 56, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - - srlx %g4, 48, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - srlx %g4, 40, %o5 /* IEU0 */ - - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - srlx %g4, 32, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - - be,pn %icc, 4b /* CTI */ -14: srlx %g4, 24, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - - srlx %g4, 16, %o5 /* IEU0 */ - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - srlx %g4, 8, %o5 /* IEU0 */ - - andcc %o5, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - andcc %g4, 0xff, %g0 /* IEU1 Group */ - be,pn %icc, 4b /* CTI */ - - sllx %o4, %g5, %o3 /* IEU0 */ - ldxa [%o1] ASI_PNF, %o4 /* Load Group */ - ba,pt %xcc, 13b /* CTI */ - add %o1, 8, %o1 /* IEU0 */ -END(strncmp) -libc_hidden_builtin_def (strncmp) |