summaryrefslogtreecommitdiff
path: root/libc/string/sparc/sparc64/strcpy.S
diff options
context:
space:
mode:
Diffstat (limited to 'libc/string/sparc/sparc64/strcpy.S')
-rw-r--r--libc/string/sparc/sparc64/strcpy.S244
1 files changed, 0 insertions, 244 deletions
diff --git a/libc/string/sparc/sparc64/strcpy.S b/libc/string/sparc/sparc64/strcpy.S
deleted file mode 100644
index 28799e4f6..000000000
--- a/libc/string/sparc/sparc64/strcpy.S
+++ /dev/null
@@ -1,244 +0,0 @@
-/* Copy SRC to DEST returning DEST.
- For SPARC v9.
- Copyright (C) 1998, 1999, 2003 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 <asm/asi.h>
-#ifndef XCC
- .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(strcpy)
- sethi %hi(0x01010101), %g1 /* IEU0 Group */
- mov %o0, %g6 /* IEU1 */
- or %g1, %lo(0x01010101), %g1 /* IEU0 Group */
- andcc %o0, 7, %g0 /* IEU1 */
-
- sllx %g1, 32, %g2 /* IEU0 Group */
- bne,pn %icc, 12f /* CTI */
- andcc %o1, 7, %g3 /* IEU1 */
- or %g1, %g2, %g1 /* IEU0 Group */
-
- bne,pn %icc, 14f /* CTI */
- sllx %g1, 7, %g2 /* IEU0 Group */
-1: ldx [%o1], %o3 /* Load */
- add %o1, 8, %o1 /* IEU1 */
-
-2: mov %o3, %g3 /* IEU0 Group */
-3: sub %o3, %g1, %o2 /* IEU1 */
- ldxa [%o1] ASI_PNF, %o3 /* Load */
-#ifdef EIGHTBIT_NOT_RARE
- andn %o2, %g3, %o2 /* IEU0 Group */
-#endif
- add %o0, 8, %o0 /* IEU0 Group */
-
- andcc %o2, %g2, %g0 /* IEU1 */
- add %o1, 8, %o1 /* IEU0 Group */
- be,a,pt %xcc, 2b /* CTI */
- stx %g3, [%o0 - 8] /* Store */
-
- srlx %g3, 56, %g5 /* IEU0 Group */
- andcc %g5, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 11f /* CTI */
- srlx %g3, 48, %g4 /* IEU0 */
-
- andcc %g4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 10f /* CTI */
- srlx %g3, 40, %g5 /* IEU0 */
- andcc %g5, 0xff, %g0 /* IEU1 Group */
-
- be,pn %icc, 9f /* CTI */
- srlx %g3, 32, %g4 /* IEU0 */
- andcc %g4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 8f /* CTI */
-
- srlx %g3, 24, %g5 /* IEU0 */
- andcc %g5, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 7f /* CTI */
- srlx %g3, 16, %g4 /* IEU0 */
-
- andcc %g4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 6f /* CTI */
- srlx %g3, 8, %g5 /* IEU0 */
- andcc %g5, 0xff, %g0 /* IEU1 Group */
-
- be,pn %icc, 5f /* CTI */
- sub %o3, %g1, %o2 /* IEU0 */
- stx %g3, [%o0 - 8] /* Store Group */
- andcc %g3, 0xff, %g0 /* IEU1 */
-
- bne,pt %icc, 3b /* CTI */
- mov %o3, %g3 /* IEU0 Group */
-4: retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
-
- .align 16
-5: stb %g5, [%o0 - 2] /* Store Group */
- srlx %g3, 16, %g4 /* IEU0 */
-6: sth %g4, [%o0 - 4] /* Store Group */
- srlx %g3, 32, %g4 /* IEU0 */
-
- stw %g4, [%o0 - 8] /* Store Group */
- retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
-7: stb %g5, [%o0 - 4] /* Store Group */
-
- srlx %g3, 32, %g4 /* IEU0 */
-8: stw %g4, [%o0 - 8] /* Store Group */
- retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
-
-9: stb %g5, [%o0 - 6] /* Store Group */
- srlx %g3, 48, %g4 /* IEU0 */
-10: sth %g4, [%o0 - 8] /* Store Group */
- retl /* CTI+IEU1 Group */
-
- mov %g6, %o0 /* IEU0 */
-11: stb %g5, [%o0 - 8] /* Store Group */
- retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
-
-12: or %g1, %g2, %g1 /* IEU0 Group */
- ldub [%o1], %o3 /* Load */
- sllx %g1, 7, %g2 /* IEU0 Group */
- stb %o3, [%o0] /* Store Group */
-
-13: add %o0, 1, %o0 /* IEU0 */
- add %o1, 1, %o1 /* IEU1 */
- andcc %o3, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 4b /* CTI */
-
- lduba [%o1] ASI_PNF, %o3 /* Load */
- andcc %o0, 7, %g0 /* IEU1 Group */
- bne,a,pt %icc, 13b /* CTI */
- stb %o3, [%o0] /* Store */
-
- andcc %o1, 7, %g3 /* IEU1 Group */
- be,a,pt %icc, 1b /* CTI */
- ldx [%o1], %o3 /* Load */
-14: orcc %g0, 64, %g4 /* IEU1 Group */
-
- sllx %g3, 3, %g5 /* IEU0 */
- sub %o1, %g3, %o1 /* IEU0 Group */
- sub %g4, %g5, %g4 /* 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 */
-15: sllx %o5, %g5, %o3 /* IEU0 Group */
- ldxa [%o1] ASI_PNF, %o5 /* Load */
- srlx %o5, %g4, %o4 /* IEU0 Group */
-
- add %o0, 8, %o0 /* IEU1 */
- or %o3, %o4, %o3 /* IEU0 Group */
- add %o1, 8, %o1 /* 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, 15b /* CTI */
- stx %o3, [%o0 - 8] /* Store */
- srlx %o3, 56, %o4 /* IEU0 Group */
-
- andcc %o4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 22f /* CTI */
- srlx %o3, 48, %o4 /* IEU0 */
- andcc %o4, 0xff, %g0 /* IEU1 Group */
-
- be,pn %icc, 21f /* CTI */
- srlx %o3, 40, %o4 /* IEU0 */
- andcc %o4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 20f /* CTI */
-
- srlx %o3, 32, %o4 /* IEU0 */
- andcc %o4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 19f /* CTI */
- srlx %o3, 24, %o4 /* IEU0 */
-
- andcc %o4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 18f /* CTI */
- srlx %o3, 16, %o4 /* IEU0 */
- andcc %o4, 0xff, %g0 /* IEU1 Group */
-
- be,pn %icc, 17f /* CTI */
- srlx %o3, 8, %o4 /* IEU0 */
- andcc %o4, 0xff, %g0 /* IEU1 Group */
- be,pn %icc, 16f /* CTI */
-
- andcc %o3, 0xff, %g0 /* IEU1 Group */
- bne,pn %icc, 15b /* CTI */
- stx %o3, [%o0 - 8] /* Store */
- retl /* CTI+IEU1 Group */
-
- mov %g6, %o0 /* IEU0 */
-
- .align 16
-16: srlx %o3, 8, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 2] /* Store */
-17: srlx %o3, 16, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 3] /* Store */
-
-18: srlx %o3, 24, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 4] /* Store */
-19: srlx %o3, 32, %o4 /* IEU0 Group */
- stw %o4, [%o0 - 8] /* Store */
-
- retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
- nop
- nop
-
-20: srlx %o3, 40, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 6] /* Store */
-21: srlx %o3, 48, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 7] /* Store */
-
-22: srlx %o3, 56, %o4 /* IEU0 Group */
- stb %o4, [%o0 - 8] /* Store */
- retl /* CTI+IEU1 Group */
- mov %g6, %o0 /* IEU0 */
-END(strcpy)
-
-libc_hidden_def(strcpy)
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-10 05:07:59 +0000