glibc/sysdeps/sparc/sparc64/stpncpy.S
Ulrich Drepper 62f29da7cb Update.
2003-01-26  Andreas Schwab  <schwab@suse.de>

	* sysdeps/wordsize-32/divdi3.c: Export the functions only as
	compatibility symbols.  Remove INTDEF for __divdi3.
	* sysdeps/wordsize-32/lldiv.c: Don't use __divdi3_internal.
	* sysdeps/powerpc/powerpc32/divdi3.c: Remove.
	* sysdeps/powerpc/powerpc32/Makefile (CPPFLAGS-divdi3.c): Don't
	define.
	* sysdeps/powerpc/powerpc32/Dist: Remove divdi3.c.

2003-01-24  Jakub Jelinek  <jakub@redhat.com>

	* elf/tls-macros.h: Add SPARC 32-bit definitions.
	* sysdeps/sparc/sparc32/elf/configure.in: Add TLS check.
	* sysdeps/sparc/sparc32/dl-machine.h: Add dl_machine_h guards
	for the first half of the header.  Include tls.h.
	(elf_machine_type_class): Return ELF_RTYPE_CLASS_PLT for TLS
	relocs too.
	(elf_machine_rela): Handle TLS relocs.
	* sysdeps/sparc/dl-tls.h: New file.

	* sysdeps/unix/sysv/linux/sparc/sparc32/socket.S: Add cancellation
	support.

	* sysdeps/sparc/sparc32/sparcv9/hp-timing.h: Use %g6 instead of %g7.
	* sysdeps/sparc/sparc32/memchr.S: Likewise.
	* sysdeps/sparc/sparc32/memcpy.S: Likewise.
	* sysdeps/sparc/sparc32/strcat.S: Likewise.
	* sysdeps/sparc/sparc32/strchr.S: Likewise.
	* sysdeps/sparc/sparc32/strcmp.S: Likewise.
	* sysdeps/sparc/sparc32/strcpy.S: Likewise.
	* sysdeps/sparc/sparc64/sparcv9b/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/hp-timing.h: Likewise.
	* sysdeps/sparc/sparc64/memcpy.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/strncmp.S: Likewise.
	* sysdeps/sparc/sparc64/strncpy.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.

2003-01-24  Andreas Schwab  <schwab@suse.de>

	* elf/dl-close.c (_dl_close): Don't relocate DT_FINI_ARRAY
	elements, and process them backwards.
	* elf/Makefile ($(objpfx)tst-array4): New target.
	($(objpfx)tst-array4.out): Likewise.
	(tests) [$(have-initfini-array) = yes]: Add tst-array4.
	* elf/tst-array4.c: New file.
	* elf/tst-array4.exp: Likewise.

2003-01-24  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fe_nomask.c: New file.

2003-01-27  Guido Guenther  <agx@sigxcpu.org>

	* sysdeps/unix/sysv/linux/mips/sysdep.h (SYSCALL_ERROR_LABEL): Define.
	* sysdeps/unix/sysv/linux/mips/pread.c: Add support for
	cancellation handling and handle both __NR_pread64 and __NR_pread.
	* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite.c: Add support for
	cancellation handling and handle both __NR_pwrite64 and __NR_pwrite.
	* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
	* sysdeps/unix/mips/sysdep.S: Don't set errno in the _LIBC_REENTRANT
	case, use register names consistently.

2003-01-27  Wolfram Gloger  <wg@malloc.de>

	* malloc/hooks.c (mem2chunk_check): Check alignment of mem
	pointer, not of the computed chunk.  Bug report from Carlos
	O'Donell <carlos@baldric.uwo.ca>.
2003-01-27 21:03:22 +00:00

426 lines
13 KiB
ArmAsm

/* 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, 2002, 2003 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 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, 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
.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(__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, %g6 /* 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 %g6, %o0 /* IEU0 */
10: subcc %o0, 2, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g5, 8, %g3 /* IEU0 */
11: subcc %o0, 3, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g4, 16, %g3 /* IEU0 */
12: subcc %o0, 4, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g5, 24, %g3 /* IEU0 */
13: subcc %o0, 5, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g4, 32, %g3 /* IEU0 */
14: subcc %o0, 6, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g5, 40, %g3 /* IEU0 */
15: subcc %o0, 7, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %g4, 48, %g3 /* IEU0 */
16: subcc %o0, 8, %g6 /* 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, %g6 /* 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 %g6, %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, %g6 /* 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 %g6, %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, %g6 /* IEU0 */
andcc %g6, 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, %g6 /* IEU0 */
andcc %g6, 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, %g6 /* IEU0 */
andcc %g6, 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, %g6 /* IEU0 Group */
ba,pt %xcc, 4b /* CTI */
andncc %o2, 31, %g3 /* IEU1 */
30: subcc %o0, 2, %g6 /* IEU0 */
ba,pt %xcc, 3b /* CTI */
sllx %o4, 8, %g3 /* IEU0 Group */
31: sllx %g6, 16, %g3 /* IEU0 Group */
ba,pt %xcc, 3b /* CTI */
sub %o0, 3, %g6 /* IEU1 */
32: subcc %o0, 4, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %o4, 24, %g3 /* IEU0 */
33: sllx %g6, 32, %g3 /* IEU0 Group */
ba,pt %xcc, 3b /* CTI */
sub %o0, 5, %g6 /* IEU1 */
34: subcc %o0, 6, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %o4, 40, %g3 /* IEU0 */
35: sllx %g6, 48, %g3 /* IEU0 Group */
ba,pt %xcc, 3b /* CTI */
sub %o0, 7, %g6 /* IEU1 */
36: subcc %o0, 8, %g6 /* IEU1 Group */
ba,pt %xcc, 3b /* CTI */
sllx %o4, 56, %g3 /* IEU0 */
END(__stpncpy)
libc_hidden_def (__stpncpy)
weak_alias (__stpncpy, stpncpy)