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glibc/sysdeps/sparc/sparc64/memset.S
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/* Set a block of memory to some byte value. | |
For UltraSPARC. | |
Copyright (C) 1996, 97, 98, 99, 2003 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by David S. Miller (davem@caip.rutgers.edu) 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, 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 | |
#define FPRS_FEF 4 | |
#define SET_BLOCKS(base, offset, source) \ | |
stx source, [base - offset - 0x18]; \ | |
stx source, [base - offset - 0x10]; \ | |
stx source, [base - offset - 0x08]; \ | |
stx source, [base - offset - 0x00]; | |
/* Well, memset is a lot easier to get right than bcopy... */ | |
.text | |
.align 32 | |
ENTRY(memset) | |
andcc %o1, 0xff, %o1 | |
mov %o0, %o5 | |
be,a,pt %icc, 50f | |
#ifndef USE_BPR | |
srl %o2, 0, %o1 | |
#else | |
mov %o2, %o1 | |
#endif | |
cmp %o2, 7 | |
#ifndef USE_BPR | |
srl %o2, 0, %o2 | |
#endif | |
bleu,pn %XCC, 17f | |
andcc %o0, 3, %g5 | |
be,pt %xcc, 4f | |
and %o1, 0xff, %o1 | |
cmp %g5, 3 | |
be,pn %xcc, 2f | |
stb %o1, [%o0 + 0x00] | |
cmp %g5, 2 | |
be,pt %xcc, 2f | |
stb %o1, [%o0 + 0x01] | |
stb %o1, [%o0 + 0x02] | |
2: sub %g5, 4, %g5 | |
sub %o0, %g5, %o0 | |
add %o2, %g5, %o2 | |
4: sllx %o1, 8, %g1 | |
andcc %o0, 4, %g0 | |
or %o1, %g1, %o1 | |
sllx %o1, 16, %g1 | |
or %o1, %g1, %o1 | |
be,pt %xcc, 2f | |
sllx %o1, 32, %g1 | |
stw %o1, [%o0] | |
sub %o2, 4, %o2 | |
add %o0, 4, %o0 | |
2: cmp %o2, 128 | |
or %o1, %g1, %o1 | |
blu,pn %xcc, 9f | |
andcc %o0, 0x38, %g5 | |
be,pn %icc, 6f | |
mov 64, %o4 | |
andcc %o0, 8, %g0 | |
be,pn %icc, 1f | |
sub %o4, %g5, %o4 | |
stx %o1, [%o0] | |
add %o0, 8, %o0 | |
1: andcc %o4, 16, %g0 | |
be,pn %icc, 1f | |
sub %o2, %o4, %o2 | |
stx %o1, [%o0] | |
stx %o1, [%o0 + 8] | |
add %o0, 16, %o0 | |
1: andcc %o4, 32, %g0 | |
be,pn %icc, 7f | |
andncc %o2, 0x3f, %o3 | |
stw %o1, [%o0] | |
stw %o1, [%o0 + 4] | |
stw %o1, [%o0 + 8] | |
stw %o1, [%o0 + 12] | |
stw %o1, [%o0 + 16] | |
stw %o1, [%o0 + 20] | |
stw %o1, [%o0 + 24] | |
stw %o1, [%o0 + 28] | |
add %o0, 32, %o0 | |
7: be,pn %xcc, 9f | |
nop | |
ldd [%o0 - 8], %f0 | |
18: wr %g0, ASI_BLK_P, %asi | |
membar #StoreStore | #LoadStore | |
andcc %o3, 0xc0, %g5 | |
and %o2, 0x3f, %o2 | |
fmovd %f0, %f2 | |
fmovd %f0, %f4 | |
andn %o3, 0xff, %o3 | |
fmovd %f0, %f6 | |
cmp %g5, 64 | |
fmovd %f0, %f8 | |
fmovd %f0, %f10 | |
fmovd %f0, %f12 | |
brz,pn %g5, 10f | |
fmovd %f0, %f14 | |
be,pn %icc, 2f | |
stda %f0, [%o0 + 0x00] %asi | |
cmp %g5, 128 | |
be,pn %icc, 2f | |
stda %f0, [%o0 + 0x40] %asi | |
stda %f0, [%o0 + 0x80] %asi | |
2: brz,pn %o3, 12f | |
add %o0, %g5, %o0 | |
10: stda %f0, [%o0 + 0x00] %asi | |
stda %f0, [%o0 + 0x40] %asi | |
stda %f0, [%o0 + 0x80] %asi | |
stda %f0, [%o0 + 0xc0] %asi | |
11: subcc %o3, 256, %o3 | |
bne,pt %xcc, 10b | |
add %o0, 256, %o0 | |
12: wr %g0, FPRS_FEF, %fprs | |
membar #StoreLoad | #StoreStore | |
9: andcc %o2, 0x78, %g5 | |
be,pn %xcc, 13f | |
andcc %o2, 7, %o2 | |
14: rd %pc, %o4 | |
srl %g5, 1, %o3 | |
sub %o4, %o3, %o4 | |
jmpl %o4 + (13f - 14b), %g0 | |
add %o0, %g5, %o0 | |
12: SET_BLOCKS (%o0, 0x68, %o1) | |
SET_BLOCKS (%o0, 0x48, %o1) | |
SET_BLOCKS (%o0, 0x28, %o1) | |
SET_BLOCKS (%o0, 0x08, %o1) | |
13: be,pn %xcc, 8f | |
andcc %o2, 4, %g0 | |
be,pn %xcc, 1f | |
andcc %o2, 2, %g0 | |
stw %o1, [%o0] | |
add %o0, 4, %o0 | |
1: be,pn %xcc, 1f | |
andcc %o2, 1, %g0 | |
sth %o1, [%o0] | |
add %o0, 2, %o0 | |
1: bne,a,pn %xcc, 8f | |
stb %o1, [%o0] | |
8: retl | |
mov %o5, %o0 | |
17: brz,pn %o2, 0f | |
8: add %o0, 1, %o0 | |
subcc %o2, 1, %o2 | |
bne,pt %xcc, 8b | |
stb %o1, [%o0 - 1] | |
0: retl | |
mov %o5, %o0 | |
6: stx %o1, [%o0] | |
andncc %o2, 0x3f, %o3 | |
be,pn %xcc, 9b | |
nop | |
ba,pt %xcc, 18b | |
ldd [%o0], %f0 | |
END(memset) | |
libc_hidden_builtin_def (memset) | |
#define ZERO_BLOCKS(base, offset, source) \ | |
stx source, [base - offset - 0x38]; \ | |
stx source, [base - offset - 0x30]; \ | |
stx source, [base - offset - 0x28]; \ | |
stx source, [base - offset - 0x20]; \ | |
stx source, [base - offset - 0x18]; \ | |
stx source, [base - offset - 0x10]; \ | |
stx source, [base - offset - 0x08]; \ | |
stx source, [base - offset - 0x00]; | |
.text | |
.align 32 | |
ENTRY(__bzero) | |
#ifndef USE_BPR | |
srl %o1, 0, %o1 | |
#endif | |
mov %o0, %o5 | |
50: cmp %o1, 7 | |
bleu,pn %xcc, 17f | |
andcc %o0, 3, %o2 | |
be,a,pt %xcc, 4f | |
andcc %o0, 4, %g0 | |
cmp %o2, 3 | |
be,pn %xcc, 2f | |
stb %g0, [%o0 + 0x00] | |
cmp %o2, 2 | |
be,pt %xcc, 2f | |
stb %g0, [%o0 + 0x01] | |
stb %g0, [%o0 + 0x02] | |
2: sub %o2, 4, %o2 | |
sub %o0, %o2, %o0 | |
add %o1, %o2, %o1 | |
andcc %o0, 4, %g0 | |
4: be,pt %xcc, 2f | |
cmp %o1, 128 | |
stw %g0, [%o0] | |
sub %o1, 4, %o1 | |
add %o0, 4, %o0 | |
2: blu,pn %xcc, 9f | |
andcc %o0, 0x38, %o2 | |
be,pn %icc, 6f | |
mov 64, %o4 | |
andcc %o0, 8, %g0 | |
be,pn %icc, 1f | |
sub %o4, %o2, %o4 | |
stx %g0, [%o0] | |
add %o0, 8, %o0 | |
1: andcc %o4, 16, %g0 | |
be,pn %icc, 1f | |
sub %o1, %o4, %o1 | |
stx %g0, [%o0] | |
stx %g0, [%o0 + 8] | |
add %o0, 16, %o0 | |
1: andcc %o4, 32, %g0 | |
be,pn %icc, 7f | |
andncc %o1, 0x3f, %o3 | |
stx %g0, [%o0] | |
stx %g0, [%o0 + 8] | |
stx %g0, [%o0 + 16] | |
stx %g0, [%o0 + 24] | |
add %o0, 32, %o0 | |
6: andncc %o1, 0x3f, %o3 | |
7: be,pn %xcc, 9f | |
wr %g0, ASI_BLK_P, %asi | |
membar #StoreLoad | #StoreStore | #LoadStore | |
fzero %f0 | |
andcc %o3, 0xc0, %o2 | |
and %o1, 0x3f, %o1 | |
fzero %f2 | |
andn %o3, 0xff, %o3 | |
faddd %f0, %f2, %f4 | |
fmuld %f0, %f2, %f6 | |
cmp %o2, 64 | |
faddd %f0, %f2, %f8 | |
fmuld %f0, %f2, %f10 | |
faddd %f0, %f2, %f12 | |
brz,pn %o2, 10f | |
fmuld %f0, %f2, %f14 | |
be,pn %icc, 2f | |
stda %f0, [%o0 + 0x00] %asi | |
cmp %o2, 128 | |
be,pn %icc, 2f | |
stda %f0, [%o0 + 0x40] %asi | |
stda %f0, [%o0 + 0x80] %asi | |
2: brz,pn %o3, 12f | |
add %o0, %o2, %o0 | |
10: stda %f0, [%o0 + 0x00] %asi | |
stda %f0, [%o0 + 0x40] %asi | |
stda %f0, [%o0 + 0x80] %asi | |
stda %f0, [%o0 + 0xc0] %asi | |
11: subcc %o3, 256, %o3 | |
bne,pt %xcc, 10b | |
add %o0, 256, %o0 | |
12: wr %g0, FPRS_FEF, %fprs | |
membar #StoreLoad | #StoreStore | |
9: andcc %o1, 0xf8, %o2 | |
be,pn %xcc, 13f | |
andcc %o1, 7, %o1 | |
14: rd %pc, %o4 | |
srl %o2, 1, %o3 | |
sub %o4, %o3, %o4 | |
jmpl %o4 + (13f - 14b), %g0 | |
add %o0, %o2, %o0 | |
12: ZERO_BLOCKS (%o0, 0xc8, %g0) | |
ZERO_BLOCKS (%o0, 0x88, %g0) | |
ZERO_BLOCKS (%o0, 0x48, %g0) | |
ZERO_BLOCKS (%o0, 0x08, %g0) | |
13: be,pn %xcc, 8f | |
andcc %o1, 4, %g0 | |
be,pn %xcc, 1f | |
andcc %o1, 2, %g0 | |
stw %g0, [%o0] | |
add %o0, 4, %o0 | |
1: be,pn %xcc, 1f | |
andcc %o1, 1, %g0 | |
sth %g0, [%o0] | |
add %o0, 2, %o0 | |
1: bne,a,pn %xcc, 8f | |
stb %g0, [%o0] | |
8: retl | |
mov %o5, %o0 | |
17: be,pn %xcc, 13b | |
orcc %o1, 0, %g0 | |
be,pn %xcc, 0f | |
8: add %o0, 1, %o0 | |
subcc %o1, 1, %o1 | |
bne,pt %xcc, 8b | |
stb %g0, [%o0 - 1] | |
0: retl | |
mov %o5, %o0 | |
END(__bzero) | |
weak_alias (__bzero, bzero) |