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-rw-r--r--sysdeps/sparc/sparc64/stpncpy.S421
1 files changed, 421 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/stpncpy.S b/sysdeps/sparc/sparc64/stpncpy.S
new file mode 100644
index 0000000000..ee1a935d3e
--- /dev/null
+++ b/sysdeps/sparc/sparc64/stpncpy.S
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+/* stpncpy(DST, SRC, COUNT) - Copy no more than N characters of
+ SRC to DEST, returning the address of the terminating '\0' in
+ DEST, if any, or else DEST + N.
+ For SPARC v9.
+ Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jj@ultra.linux.cz> and
+ Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+#include <asm/asi.h>
+#ifndef XCC
+#define XCC xcc
+#define USE_BPR
+#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(__stpncpy)
+ sethi %hi(0x01010101), %g1 /* IEU0 Group */
+#ifdef USE_BPR
+ brz,pn %o2, 19f /* CTI+IEU1 */
+#else
+ tst %o2 /* IEU1 */
+ be,pn %XCC, 19f /* CTI */
+#endif
+ or %g1, %lo(0x01010101), %g1 /* IEU1 */
+ andcc %o0, 7, %g0 /* IEU1 Group */
+
+ sllx %g1, 32, %g2 /* IEU0 */
+ bne,pn %icc, 26f /* CTI */
+ or %g1, %g2, %g1 /* IEU0 Group */
+ andcc %o1, 7, %g3 /* IEU1 */
+
+ bne,pn %icc, 28f /* CTI */
+ sllx %g1, 7, %g2 /* IEU0 Group */
+ ldx [%o1], %o3 /* Load */
+1: add %o1, 8, %o1 /* IEU1 */
+
+2: subcc %o2, 8, %o2 /* IEU1 Group */
+ bl,pn %XCC, 18f /* CTI */
+ sub %o3, %g1, %o4 /* IEU0 */
+ add %o0, 8, %o0 /* IEU0 Group */
+
+#ifdef EIGHTBIT_NOT_MORE
+ andn %o4, %o3, %o4 /* IEU1 */
+#endif
+ mov %o3, %g3 /* IEU1 */
+ ldxa [%o1] ASI_PNF, %o3 /* Load */
+ add %o1, 8, %o1 /* IEU0 Group */
+ andcc %o4, %g2, %g0 /* IEU1 */
+
+ be,a,pt %xcc, 2b /* CTI */
+ stx %g3, [%o0-8] /* Store Group */
+ srlx %g3, 56, %g5 /* IEU0 Group */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 16f /* CTI */
+ srlx %g3, 48, %g4 /* IEU0 */
+ andcc %g4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 15f /* CTI */
+
+ srlx %g3, 40, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 14f /* CTI */
+ srlx %g3, 32, %g4 /* IEU0 */
+
+ andcc %g4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 13f /* CTI */
+ srlx %g3, 24, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 12f /* CTI */
+ srlx %g3, 16, %g4 /* IEU0 */
+ andcc %g4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 11f /* CTI */
+
+ srlx %g3, 8, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 10f /* CTI */
+ sub %o0, 1, %g7 /* IEU0 */
+
+ andcc %g3, 0xff, %g0 /* IEU1 Group */
+ bne,pt %icc, 2b /* CTI */
+3: stx %g3, [%o0-8] /* Store */
+ andncc %o2, 31, %g3 /* IEU1 Group */
+
+4: be,pn %XCC, 41f /* CTI */
+ and %o2, 31, %o2 /* IEU1 Group */
+40: stx %g0, [%o0] /* Store */
+ stx %g0, [%o0 + 8] /* Store Group */
+
+ subcc %g3, 32, %g3 /* IEU1 */
+ stx %g0, [%o0 + 16] /* Store Group */
+ stx %g0, [%o0 + 24] /* Store Group */
+ bne,pt %XCC, 40b /* CTI */
+
+ add %o0, 32, %o0 /* IEU0 */
+41: subcc %o2, 8, %o2 /* IEU1 Group */
+ bl,a,pn %XCC, 6f /* CTI */
+ andcc %o2, 4, %g0 /* IEU1 Group */
+
+5: stx %g0, [%o0] /* Store */
+ subcc %o2, 8, %o2 /* IEU1 Group */
+ bge,pt %XCC, 5b /* CTI */
+ add %o0, 8, %o0 /* IEU0 */
+
+ andcc %o2, 4, %g0 /* IEU1 Group */
+6: be,a,pn %icc, 7f /* CTI */
+ andcc %o2, 2, %g0 /* IEU1 Group */
+ stw %g0, [%o0] /* Store */
+
+ add %o0, 4, %o0 /* IEU0 */
+ andcc %o2, 2, %g0 /* IEU1 Group */
+7: be,a,pn %icc, 8f /* CTI */
+ andcc %o2, 1, %g0 /* IEU1 Group */
+
+ sth %g0, [%o0] /* Store */
+ add %o0, 2, %o0 /* IEU0 */
+ andcc %o2, 1, %g0 /* IEU1 Group */
+8: bne,a,pn %icc, 9f /* CTI */
+
+ stb %g0, [%o0] /* Store */
+9: retl /* CTI+IEU1 Group */
+ mov %g7, %o0 /* IEU0 */
+10: subcc %o0, 2, %g7 /* IEU1 Group */
+
+ ba,pt %xcc, 3b /* CTI */
+ sllx %g5, 8, %g3 /* IEU0 */
+11: subcc %o0, 3, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+
+ sllx %g4, 16, %g3 /* IEU0 */
+12: subcc %o0, 4, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+ sllx %g5, 24, %g3 /* IEU0 */
+
+13: subcc %o0, 5, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+ sllx %g4, 32, %g3 /* IEU0 */
+14: subcc %o0, 6, %g7 /* IEU1 Group */
+
+ ba,pt %xcc, 3b /* CTI */
+ sllx %g5, 40, %g3 /* IEU0 */
+15: subcc %o0, 7, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+
+ sllx %g4, 48, %g3 /* IEU0 */
+16: subcc %o0, 8, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+ clr %g3 /* IEU0 */
+
+ .align 16
+17: or %o3, %o4, %o3 /* IEU0 Group */
+ sub %o3, %g1, %o4 /* IEU1 */
+18: addcc %o2, 8, %o2 /* IEU1 Group */
+ be,pn %XCC, 19f /* CTI */
+
+ andcc %o4, %g2, %g0 /* IEU1 Group */
+ be,pt %xcc, 21f /* CTI */
+ srlx %o3, 56, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 20f /* CTI */
+ stb %g5, [%o0] /* Store */
+ add %o0, 1, %o0 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+
+ be,pn %XCC, 19f /* CTI */
+ srlx %o3, 48, %g5 /* IEU0 Group */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 20f /* CTI */
+
+ stb %g5, [%o0] /* Store */
+ add %o0, 1, %o0 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+ be,pn %XCC, 19f /* CTI */
+
+ srlx %o3, 40, %g5 /* IEU0 Group */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 20f /* CTI */
+ stb %g5, [%o0] /* Store */
+
+ add %o0, 1, %o0 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+ be,pn %XCC, 19f /* CTI */
+ srlx %o3, 32, %g5 /* IEU0 Group */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 20f /* CTI */
+ stb %g5, [%o0] /* Store */
+ add %o0, 1, %o0 /* IEU0 Group */
+
+ subcc %o2, 1, %o2 /* IEU1 */
+ be,pn %XCC, 19f /* CTI */
+ srlx %o3, 24, %g5 /* IEU0 Group */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 20f /* CTI */
+ stb %g5, [%o0] /* Store */
+ add %o0, 1, %o0 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+
+ be,pn %XCC, 19f /* CTI */
+ srlx %o3, 16, %g5 /* IEU0 Group */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 20f /* CTI */
+
+ stb %g5, [%o0] /* Store */
+ add %o0, 1, %o0 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+ be,pn %XCC, 19f /* CTI */
+
+ srlx %o3, 8, %o3 /* IEU0 Group */
+ stb %o3, [%o0] /* Store */
+59: add %o0, 1, %o2 /* IEU1 */
+ andcc %o3, 0xff, %g0 /* IEU1 Group */
+
+ retl /* CTI+IEU1 Group */
+ movne %icc, %o2, %o0 /* Single Group */
+19: retl /* CTI+IEU1 Group */
+ nop /* IEU0 */
+
+20: mov %o0, %g7 /* IEU0 Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+ be,pn %XCC, 51f /* CTI */
+ add %o0, 1, %o0 /* IEU0 Group */
+
+50: stb %g0, [%o0] /* Store Group */
+ subcc %o2, 1, %o2 /* IEU1 Group */
+ bne,pt %XCC, 50b /* CTI */
+ add %o0, 1, %o0 /* IEU0 */
+
+51: retl /* CTI+IEU1 Group */
+ mov %g7, %o0 /* IEU0 */
+
+ .align 16
+21: andcc %o2, 4, %g0 /* IEU1 Group */
+ be,pn %icc, 22f /* CTI */
+ srlx %o3, 32, %g5 /* IEU0 */
+ stw %g5, [%o0] /* Store Group */
+
+ add %o0, 4, %o0 /* IEU0 */
+ mov %o3, %g5 /* IEU1 */
+22: andcc %o2, 2, %g0 /* IEU1 Group */
+ be,pn %icc, 23f /* CTI */
+
+ srlx %g5, 16, %g4 /* IEU0 */
+ sth %g4, [%o0] /* Store Group */
+ add %o0, 2, %o0 /* IEU0 */
+ mov %g5, %g4 /* IEU1 */
+
+23: srlx %g4, 8, %g4 /* IEU0 Group */
+ andcc %o2, 1, %g0 /* IEU1 */
+ bne,a,pn %icc, 24f /* CTI */
+ stb %g4, [%o0] /* Store Group */
+
+ retl /* CTI+IEU1 Group */
+ nop /* IEU0 */
+24: retl /* CTI+IEU1 Group */
+ add %o0, 1, %o0 /* IEU0 */
+
+ .align 16
+55: sub %o0, 1, %g7 /* IEU0 Group */
+25: andcc %o0, 7, %g0 /* IEU1 */
+ be,a,pn %icc, 4b /* CTI */
+ andncc %o2, 31, %g3 /* IEU1 Group */
+
+ stb %g0, [%o0] /* Store Group */
+ subcc %o2, 1, %o2 /* IEU1 */
+ bne,pt %XCC, 25b /* CTI */
+ add %o0, 1, %o0 /* IEU0 Group */
+
+ retl /* CTI+IEU1 Group */
+ mov %g7, %o0 /* IEU0 */
+
+ .align 16
+26: ldub [%o1], %o3 /* Load */
+ sllx %g1, 7, %g2 /* IEU0 Group */
+ stb %o3, [%o0] /* Store */
+27: subcc %o2, 1, %o2 /* IEU1 */
+
+ be,pn %XCC, 59b /* CTI */
+ add %o1, 1, %o1 /* IEU0 Group */
+ add %o0, 1, %o0 /* IEU1 */
+ andcc %o3, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 55b /* CTI */
+ lduba [%o1] ASI_PNF, %o3 /* Load */
+ andcc %o0, 7, %g0 /* IEU1 Group */
+ bne,a,pt %icc, 27b /* CTI */
+
+ stb %o3, [%o0] /* Store */
+ andcc %o1, 7, %g3 /* IEU1 Group */
+ be,a,pt %icc, 1b /* CTI */
+ ldx [%o1], %o3 /* Load */
+
+28: orcc %g0, 64, %g4 /* IEU1 Group */
+ sllx %g3, 3, %g5 /* IEU0 */
+ sub %g4, %g5, %g4 /* IEU0 Group */
+ sub %o1, %g3, %o1 /* IEU1 */
+ /* %g1 = 0101010101010101
+ %g2 = 8080808080808080
+ %g3 = source alignment
+ %g5 = number of bits to shift left
+ %g4 = number of bits to shift right */
+
+ ldxa [%o1] ASI_PNF, %o5 /* Load Group */
+ addcc %o1, 8, %o1 /* IEU1 */
+29: sllx %o5, %g5, %o3 /* IEU0 Group */
+ ldxa [%o1] ASI_PNF, %o5 /* Load */
+
+ subcc %o2, 8, %o2 /* IEU1 */
+ bl,pn %XCC, 17b /* CTI */
+ srlx %o5, %g4, %o4 /* IEU0 Group */
+ add %o1, 8, %o1 /* IEU1 */
+
+ or %o3, %o4, %o3 /* IEU0 Group */
+ add %o0, 8, %o0 /* IEU1 */
+ sub %o3, %g1, %o4 /* IEU0 Group */
+#ifdef EIGHTBIT_NOT_RARE
+ andn %o4, %o3, %o4 /* IEU0 Group */
+#endif
+ andcc %o4, %g2, %g0 /* IEU1 Group */
+
+ be,a,pt %xcc, 29b /* CTI */
+ stx %o3, [%o0-8] /* Store */
+ srlx %o3, 56, %o4 /* IEU0 Group */
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 36f /* CTI */
+ srlx %o3, 48, %g7 /* IEU0 */
+ andcc %g7, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 35f /* CTI */
+
+ srlx %o3, 40, %o4 /* IEU0 */
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 34f /* CTI */
+ srlx %o3, 32, %g7 /* IEU0 */
+
+ andcc %g7, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 33f /* CTI */
+ srlx %o3, 24, %o4 /* IEU0 */
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 32f /* CTI */
+ srlx %o3, 16, %g7 /* IEU0 */
+ andcc %g7, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 31f /* CTI */
+
+ srlx %o3, 8, %o4 /* IEU0 */
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 30f /* CTI */
+ andcc %o3, 0xff, %g0 /* IEU1 Group */
+
+ bne,pn %icc, 29b /* CTI */
+ stx %o3, [%o0-8] /* Store */
+ sub %o0, 1, %g7 /* IEU0 Group */
+ ba,pt %xcc, 4b /* CTI */
+
+ andncc %o2, 31, %g3 /* IEU1 */
+30: subcc %o0, 2, %g7 /* IEU0 */
+ ba,pt %xcc, 3b /* CTI */
+ sllx %o4, 8, %g3 /* IEU0 Group */
+
+31: sllx %g7, 16, %g3 /* IEU0 Group */
+ ba,pt %xcc, 3b /* CTI */
+ sub %o0, 3, %g7 /* IEU1 */
+32: subcc %o0, 4, %g7 /* IEU1 Group */
+
+ ba,pt %xcc, 3b /* CTI */
+ sllx %o4, 24, %g3 /* IEU0 */
+33: sllx %g7, 32, %g3 /* IEU0 Group */
+ ba,pt %xcc, 3b /* CTI */
+
+ sub %o0, 5, %g7 /* IEU1 */
+34: subcc %o0, 6, %g7 /* IEU1 Group */
+ ba,pt %xcc, 3b /* CTI */
+ sllx %o4, 40, %g3 /* IEU0 */
+
+35: sllx %g7, 48, %g3 /* IEU0 Group */
+ ba,pt %xcc, 3b /* CTI */
+ sub %o0, 7, %g7 /* IEU1 */
+36: subcc %o0, 8, %g7 /* IEU1 Group */
+
+ ba,pt %xcc, 3b /* CTI */
+ sllx %o4, 56, %g3 /* IEU0 */
+END(__stpncpy)
+
+weak_alias(__stpncpy, stpncpy)