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8cb079d41b
* sysdeps/sparc/sparc64/add_n.S: Avoid using %g2, %g3, %g7 registers as much as possible. Declare them using .register pseudo-op if they are still used. * sysdeps/sparc/sparc64/lshift.S: Likewise. * sysdeps/sparc/sparc64/memchr.S: Likewise. * sysdeps/sparc/sparc64/memcmp.S: Likewise. * sysdeps/sparc/sparc64/memcpy.S: Likewise. * sysdeps/sparc/sparc64/memset.S: Likewise. * sysdeps/sparc/sparc64/rawmemchr.S: Likewise. * sysdeps/sparc/sparc64/rshift.S: Likewise. * sysdeps/sparc/sparc64/stpcpy.S: Likewise. * sysdeps/sparc/sparc64/stpncpy.S: Likewise. * sysdeps/sparc/sparc64/strcat.S: Likewise. * sysdeps/sparc/sparc64/strchr.S: Likewise. * sysdeps/sparc/sparc64/strcmp.S: Likewise. * sysdeps/sparc/sparc64/strcpy.S: Likewise. * sysdeps/sparc/sparc64/strcspn.S: Likewise. * sysdeps/sparc/sparc64/strlen.S: Likewise. * sysdeps/sparc/sparc64/strncmp.S: Likewise. * sysdeps/sparc/sparc64/strncpy.S: Likewise. * sysdeps/sparc/sparc64/strpbrk.S: Likewise. * sysdeps/sparc/sparc64/strspn.S: Likewise. * sysdeps/sparc/sparc64/sub_n.S: Likewise. * sysdeps/sparc/sparc64/dl-machine.h: Likewise. Optimize trampoline code for .plt4-.plt32767. Fix trampolines for .plt32768+. 1999-07-25 Jakub Jelinek <jj@ultra.linux.cz>
482 lines
14 KiB
ArmAsm
482 lines
14 KiB
ArmAsm
/* strchr (str, ch) -- Return pointer to first occurrence of CH in STR.
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For SPARC v9.
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Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
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Jakub Jelinek <jj@ultra.linux.cz>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sysdep.h>
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#include <asm/asi.h>
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#ifndef XCC
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#define XCC xcc
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#define USE_BPR
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.register %g2, #scratch
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.register %g3, #scratch
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.register %g7, #scratch
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#endif
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/* Normally, this uses
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((xword - 0x0101010101010101) & 0x8080808080808080) test
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to find out if any byte in xword could be zero. This is fast, but
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also gives false alarm for any byte in range 0x81-0xff. It does
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not matter for correctness, as if this test tells us there could
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be some zero byte, we check it byte by byte, but if bytes with
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high bits set are common in the strings, then this will give poor
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performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
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will use one tick slower, but more precise test
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((xword - 0x0101010101010101) & (~xword) & 0x8080808080808080),
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which does not give any false alarms (but if some bits are set,
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one cannot assume from it which bytes are zero and which are not).
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It is yet to be measured, what is the correct default for glibc
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in these days for an average user.
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*/
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.text
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.align 32
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ENTRY(strchr)
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andcc %o1, 0xff, %o1 /* IEU1 Group */
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be,pn %icc, 17f /* CTI */
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sllx %o1, 8, %g3 /* IEU0 Group */
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sethi %hi(0x01010101), %g1 /* IEU1 */
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or %g3, %o1, %g3 /* IEU0 Group */
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ldub [%o0], %o3 /* Load */
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sllx %g3, 16, %g5 /* IEU0 Group */
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or %g1, %lo(0x01010101), %g1 /* IEU1 */
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sllx %g1, 32, %g2 /* IEU0 Group */
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brz,pn %o3, 5f /* CTI+IEU1 */
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orcc %g3, %g5, %g3 /* IEU1 Group */
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sllx %g3, 32, %g5 /* IEU0 */
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cmp %o3, %o1 /* IEU1 Group */
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be,pn %xcc, 14f /* CTI */
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or %g1, %g2, %g1 /* IEU0 */
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andcc %o0, 7, %g0 /* IEU1 Group */
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bne,a,pn %icc, 15f /* CTI */
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add %o0, 1, %o0 /* IEU0 */
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ldx [%o0], %o3 /* Load Group */
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1: sllx %g1, 7, %g2 /* IEU0 */
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or %g3, %g5, %g3 /* IEU1 */
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add %o0, 8, %o0 /* IEU0 Group */
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xor %o3, %g3, %o4 /* IEU1 */
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/* %g1 = 0101010101010101 *
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* %g2 = 8080088080808080 *
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* %g3 = c c c c c c c c *
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* %o3 = value *
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* %o4 = value XOR c */
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2: sub %o3, %g1, %o2 /* IEU0 Group */
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sub %o4, %g1, %o5 /* IEU1 */
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#ifdef EIGHTBIT_NOT_RARE
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andn %o2, %o3, %g7 /* IEU0 Group */
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andn %o5, %o4, %o5 /* IEU1 */
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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or %o5, %g7, %o5 /* IEU0 Group */
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#else
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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or %o5, %o2, %o5 /* IEU0 Group */
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#endif
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add %o0, 8, %o0 /* IEU1 */
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andcc %o5, %g2, %g0 /* IEU1 Group */
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be,a,pt %xcc, 2b /* CTI */
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xor %o3, %g3, %o4 /* IEU0 */
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srlx %o5, 32, %g5 /* IEU0 Group */
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add %o2, %g1, %o2 /* IEU1 */
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3: andcc %g5, %g2, %g0 /* IEU1 Group */
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be,pn %xcc, 4f /* CTI */
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srlx %o2, 56, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 56, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 6f /* CTI */
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srlx %o2, 48, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 48, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 7f /* CTI */
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srlx %o2, 40, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 40, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 8f /* CTI */
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srlx %o2, 32, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 32, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 9f /* CTI */
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4: srlx %o2, 24, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 24, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 10f /* CTI */
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srlx %o2, 16, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 16, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 11f /* CTI */
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srlx %o2, 8, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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srlx %o4, 8, %g5 /* IEU0 */
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andcc %g5, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 12f /* CTI */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5f /* CTI */
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sub %o3, %g1, %o2 /* IEU0 */
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andcc %o4, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 13f /* CTI */
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xor %o3, %g3, %o4 /* IEU0 */
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ldxa [%o0] ASI_PNF, %o3 /* Load Group */
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sub %o4, %g1, %o5 /* IEU0 */
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or %o5, %o2, %o5 /* IEU1 */
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add %o0, 8, %o0 /* IEU0 Group */
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andcc %o5, %g2, %g0 /* IEU1 */
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be,a,pt %xcc, 2b /* CTI */
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xor %o3, %g3, %o4 /* IEU0 Group */
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srlx %o5, 32, %g5 /* IEU0 Group */
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ba,pt %xcc, 3b /* CTI */
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add %o2, %g1, %o2 /* IEU1 */
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.align 16
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5: retl /* CTI+IEU1 Group */
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clr %o0 /* IEU0 */
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6: retl /* CTI+IEU1 Group */
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add %o0, -16, %o0 /* IEU0 */
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7: retl /* CTI+IEU1 Group */
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add %o0, -15, %o0 /* IEU0 */
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8: retl /* CTI+IEU1 Group */
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add %o0, -14, %o0 /* IEU0 */
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9: retl /* CTI+IEU1 Group */
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add %o0, -13, %o0 /* IEU0 */
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10: retl /* CTI+IEU1 Group */
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add %o0, -12, %o0 /* IEU0 */
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11: retl /* CTI+IEU1 Group */
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add %o0, -11, %o0 /* IEU0 */
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12: retl /* CTI+IEU1 Group */
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add %o0, -10, %o0 /* IEU0 */
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13: retl /* CTI+IEU1 Group */
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add %o0, -9, %o0 /* IEU0 */
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14: retl /* CTI+IEU1 Group */
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nop /* IEU0 */
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.align 16
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15: ldub [%o0], %o3 /* Load Group */
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16: andcc %o0, 7, %g0 /* IEU1 */
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be,a,pn %icc, 1b /* CTI */
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ldx [%o0], %o3 /* Load Group */
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andcc %o3, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 5b /* CTI */
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add %o0, 1, %o0 /* IEU0 */
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cmp %o3, %o1 /* IEU1 Group */
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bne,a,pn %icc, 16b /* CTI */
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ldub [%o0], %o3 /* Load */
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retl /* CTI+IEU1 Group */
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add %o0, -1, %o0 /* IEU0 */
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/* strchr (str, 0) */
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.align 32
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nop
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.align 16
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17: sethi %hi(0x01010101), %g1 /* IEU0 Group */
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ldub [%o0], %o3 /* Load */
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or %g1, %lo(0x01010101), %g1 /* IEU0 Group */
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sllx %g1, 32, %g2 /* IEU0 Group */
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andcc %o0, 7, %g0 /* IEU1 */
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or %g1, %g2, %g1 /* IEU0 Group */
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bne,pn %icc, 32f /* CTI */
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sllx %g1, 7, %g2 /* IEU0 Group */
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brz,pn %o3, 30f /* CTI+IEU1 */
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ldx [%o0], %o3 /* Load */
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18: add %o0, 8, %o0 /* IEU0 Group */
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19: sub %o3, %g1, %o2 /* IEU0 Group */
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#ifdef EIGHTBIT_NOT_RARE
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andn %o2, %o3, %g7 /* IEU0 Group */
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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andcc %g7, %g2, %g0 /* IEU1 Group */
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#else
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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andcc %o2, %g2, %g0 /* IEU1 Group */
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#endif
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be,pt %xcc, 19b /* CTI */
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add %o0, 8, %o0 /* IEU0 */
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addcc %o2, %g1, %g3 /* IEU1 Group */
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srlx %o2, 32, %o2 /* IEU0 */
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20: andcc %o2, %g2, %g0 /* IEU1 Group */
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be,pn %xcc, 21f /* CTI */
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srlx %g3, 56, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 29f /* CTI */
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srlx %g3, 48, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 28f /* CTI */
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srlx %g3, 40, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 27f /* CTI */
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srlx %g3, 32, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 26f /* CTI */
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21: srlx %g3, 24, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 25f /* CTI */
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srlx %g3, 16, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 24f /* CTI */
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srlx %g3, 8, %o2 /* IEU0 */
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andcc %o2, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 23f /* CTI */
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sub %o3, %g1, %o2 /* IEU0 */
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andcc %g3, 0xff, %g0 /* IEU1 Group */
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be,pn %icc, 22f /* CTI */
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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andcc %o2, %g2, %g0 /* IEU1 Group */
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be,pt %xcc, 19b /* CTI */
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add %o0, 8, %o0 /* IEU0 */
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addcc %o2, %g1, %g3 /* IEU1 Group */
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ba,pt %xcc, 20b /* CTI */
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srlx %o2, 32, %o2 /* IEU0 */
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.align 16
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22: retl /* CTI+IEU1 Group */
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add %o0, -9, %o0 /* IEU0 */
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23: retl /* CTI+IEU1 Group */
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add %o0, -10, %o0 /* IEU0 */
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24: retl /* CTI+IEU1 Group */
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add %o0, -11, %o0 /* IEU0 */
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25: retl /* CTI+IEU1 Group */
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add %o0, -12, %o0 /* IEU0 */
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26: retl /* CTI+IEU1 Group */
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add %o0, -13, %o0 /* IEU0 */
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27: retl /* CTI+IEU1 Group */
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add %o0, -14, %o0 /* IEU0 */
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28: retl /* CTI+IEU1 Group */
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add %o0, -15, %o0 /* IEU0 */
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29: retl /* CTI+IEU1 Group */
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add %o0, -16, %o0 /* IEU0 */
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30: retl /* CTI+IEU1 Group */
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nop /* IEU0 */
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.align 16
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32: andcc %o0, 7, %g0 /* IEU1 Group */
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be,a,pn %icc, 18b /* CTI */
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ldx [%o0], %o3 /* Load */
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add %o0, 1, %o0 /* IEU0 Group */
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brnz,a,pt %o3, 32b /* CTI+IEU1 */
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lduba [%o0] ASI_PNF, %o3 /* Load */
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retl /* CTI+IEU1 Group */
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add %o0, -1, %o0 /* IEU0 */
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END(strchr)
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.align 32
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ENTRY(strrchr)
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andcc %o1, 0xff, %o1 /* IEU1 Group */
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be,pn %icc, 17b /* CTI */
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clr %g4 /* IEU0 */
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andcc %o0, 7, %g0 /* IEU1 Group */
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bne,pn %icc, 13f /* CTI */
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sllx %o1, 8, %g3 /* IEU0 */
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ldx [%o0], %o3 /* Load Group */
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1: sethi %hi(0x01010101), %g1 /* IEU0 */
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or %g3, %o1, %g3 /* IEU1 */
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sllx %g3, 16, %g5 /* IEU0 Group */
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or %g1, %lo(0x01010101), %g1 /* IEU1 */
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sllx %g1, 32, %g2 /* IEU0 Group */
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or %g3, %g5, %g3 /* IEU1 */
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sllx %g3, 32, %g5 /* IEU0 Group */
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or %g1, %g2, %g1 /* IEU1 */
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sllx %g1, 7, %g2 /* IEU0 Group */
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or %g3, %g5, %g3 /* IEU1 */
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add %o0, 8, %o0 /* IEU0 Group */
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xor %o3, %g3, %o4 /* IEU1 */
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/* %g1 = 0101010101010101 *
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* %g2 = 8080088080808080 *
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* %g3 = c c c c c c c c *
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* %o3 = value *
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* %o4 = value XOR c */
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2: sub %o3, %g1, %o2 /* IEU0 Group */
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3: sub %o4, %g1, %o5 /* IEU1 */
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#ifdef EIGHTBIT_NOT_RARE
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andn %o2, %o3, %g7 /* IEU0 Group */
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andn %o5, %o4, %o5 /* IEU1 */
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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or %o5, %g7, %o5 /* IEU0 Group */
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#else
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ldxa [%o0] ASI_PNF, %o3 /* Load */
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or %o5, %o2, %o5 /* IEU0 Group */
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#endif
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add %o0, 8, %o0 /* IEU1 */
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andcc %o5, %g2, %g0 /* IEU1 Group */
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be,a,pt %xcc, 2b /* CTI */
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xor %o3, %g3, %o4 /* IEU0 */
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srlx %o5, 32, %g5 /* IEU0 Group */
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add %o2, %g1, %o2 /* IEU1 */
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andcc %g5, %g2, %g0 /* IEU1 Group */
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be,pn %xcc, 7f /* CTI */
|
|
srlx %o2, 56, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
|
|
srlx %o4, 56, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
srlx %o2, 48, %g5 /* IEU0 */
|
|
be,a,pn %icc, 4f /* CTI */
|
|
|
|
add %o0, -16, %g4 /* IEU0 Group */
|
|
4: andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
srlx %o4, 48, %g5 /* IEU0 */
|
|
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
srlx %o2, 40, %g5 /* IEU0 */
|
|
be,a,pn %icc, 5f /* CTI */
|
|
add %o0, -15, %g4 /* IEU0 Group */
|
|
|
|
5: andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
srlx %o4, 40, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
|
|
srlx %o2, 32, %g5 /* IEU0 */
|
|
be,a,pn %icc, 6f /* CTI */
|
|
add %o0, -14, %g4 /* IEU0 Group */
|
|
6: andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
|
|
be,pn %icc, 12f /* CTI */
|
|
srlx %o4, 32, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,a,pn %icc, 7f /* CTI */
|
|
|
|
add %o0, -13, %g4 /* IEU0 */
|
|
7: srlx %o2, 24, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
|
|
srlx %o4, 24, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
srlx %o2, 16, %g5 /* IEU0 */
|
|
be,a,pn %icc, 8f /* CTI */
|
|
|
|
add %o0, -12, %g4 /* IEU0 Group */
|
|
8: andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
srlx %o4, 16, %g5 /* IEU0 */
|
|
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
srlx %o2, 8, %g5 /* IEU0 */
|
|
be,a,pn %icc, 9f /* CTI */
|
|
add %o0, -11, %g4 /* IEU0 Group */
|
|
|
|
9: andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
srlx %o4, 8, %g5 /* IEU0 */
|
|
andcc %g5, 0xff, %g0 /* IEU1 Group */
|
|
|
|
be,a,pn %icc, 10f /* CTI */
|
|
add %o0, -10, %g4 /* IEU0 */
|
|
10: andcc %o2, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12f /* CTI */
|
|
|
|
sub %o3, %g1, %o2 /* IEU0 */
|
|
andcc %o4, 0xff, %g0 /* IEU1 Group */
|
|
be,a,pn %icc, 11f /* CTI */
|
|
add %o0, -9, %g4 /* IEU0 */
|
|
|
|
11: ba,pt %xcc, 3b /* CTI Group */
|
|
xor %o3, %g3, %o4 /* IEU0 Group */
|
|
12: retl /* CTI+IEU1 Group */
|
|
mov %g4, %o0 /* IEU0 */
|
|
|
|
.align 16
|
|
13: ldub [%o0], %o3 /* Load Group */
|
|
add %o0, 1, %o0 /* IEU0 */
|
|
14: andcc %o3, 0xff, %g0 /* IEU1 Group */
|
|
be,pn %icc, 12b /* CTI */
|
|
|
|
cmp %o3, %o1 /* IEU1 Group */
|
|
ldub [%o0], %o3 /* Load */
|
|
be,a,pn %icc, 15f /* CTI */
|
|
add %o0, -1, %g4 /* IEU0 Group */
|
|
|
|
15: andcc %o0, 7, %g0 /* IEU1 Group */
|
|
bne,a,pt %icc, 14b /* CTI */
|
|
add %o0, 1, %o0 /* IEU0 */
|
|
ba,pt %xcc, 1b /* CTI Group */
|
|
|
|
ldx [%o0], %o3 /* Load */
|
|
END(strrchr)
|
|
|
|
weak_alias (strchr, index)
|
|
weak_alias (strrchr, rindex)
|