mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-28 13:31:13 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
710 lines
11 KiB
ArmAsm
710 lines
11 KiB
ArmAsm
/* Optimized memchr with sse2 without bsf
|
|
Copyright (C) 2011-2019 Free Software Foundation, Inc.
|
|
Contributed by Intel Corporation.
|
|
This file is part of the GNU C Library.
|
|
|
|
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/>. */
|
|
|
|
#if IS_IN (libc)
|
|
|
|
# include <sysdep.h>
|
|
|
|
# define CFI_PUSH(REG) \
|
|
cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (REG, 0)
|
|
|
|
# define CFI_POP(REG) \
|
|
cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (REG)
|
|
|
|
# define PUSH(REG) pushl REG; CFI_PUSH (REG)
|
|
# define POP(REG) popl REG; CFI_POP (REG)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
# define ENTRANCE PUSH(%edi);
|
|
# define PARMS 8
|
|
# define RETURN POP(%edi); ret; CFI_PUSH(%edi);
|
|
# else
|
|
# define ENTRANCE
|
|
# define PARMS 4
|
|
# endif
|
|
|
|
# define STR1 PARMS
|
|
# define STR2 STR1+4
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
# define LEN STR2+4
|
|
# endif
|
|
|
|
# ifndef MEMCHR
|
|
# define MEMCHR __memchr_sse2
|
|
# endif
|
|
|
|
atom_text_section
|
|
ENTRY (MEMCHR)
|
|
ENTRANCE
|
|
mov STR1(%esp), %ecx
|
|
movd STR2(%esp), %xmm1
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
mov LEN(%esp), %edx
|
|
test %edx, %edx
|
|
jz L(return_null)
|
|
# endif
|
|
|
|
punpcklbw %xmm1, %xmm1
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
mov %ecx, %edi
|
|
# else
|
|
mov %ecx, %edx
|
|
# endif
|
|
punpcklbw %xmm1, %xmm1
|
|
|
|
and $63, %ecx
|
|
pshufd $0, %xmm1, %xmm1
|
|
cmp $48, %ecx
|
|
ja L(crosscache)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqu (%edi), %xmm0
|
|
# else
|
|
movdqu (%edx), %xmm0
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm0
|
|
pmovmskb %xmm0, %eax
|
|
test %eax, %eax
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
jnz L(match_case2_prolog)
|
|
|
|
sub $16, %edx
|
|
jbe L(return_null)
|
|
lea 16(%edi), %edi
|
|
and $15, %ecx
|
|
and $-16, %edi
|
|
add %ecx, %edx
|
|
# else
|
|
jnz L(match_case1_prolog)
|
|
lea 16(%edx), %edx
|
|
and $-16, %edx
|
|
# endif
|
|
jmp L(loop_prolog)
|
|
|
|
.p2align 4
|
|
L(crosscache):
|
|
and $15, %ecx
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
and $-16, %edi
|
|
movdqa (%edi), %xmm0
|
|
# else
|
|
and $-16, %edx
|
|
movdqa (%edx), %xmm0
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm0
|
|
pmovmskb %xmm0, %eax
|
|
sar %cl, %eax
|
|
test %eax, %eax
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
jnz L(match_case2_prolog1)
|
|
/* "ecx" is less than 16. Calculate "edx + ecx - 16" by using
|
|
"edx - (16 - ecx)" instead of "(edx + ecx) - 16" to void
|
|
possible addition overflow. */
|
|
neg %ecx
|
|
add $16, %ecx
|
|
sub %ecx, %edx
|
|
jbe L(return_null)
|
|
lea 16(%edi), %edi
|
|
# else
|
|
jnz L(match_case1_prolog1)
|
|
lea 16(%edx), %edx
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(loop_prolog):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
sub $64, %edx
|
|
jbe L(exit_loop)
|
|
movdqa (%edi), %xmm0
|
|
# else
|
|
movdqa (%edx), %xmm0
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm0
|
|
xor %ecx, %ecx
|
|
pmovmskb %xmm0, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 16(%edi), %xmm2
|
|
# else
|
|
movdqa 16(%edx), %xmm2
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm2
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm2, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 32(%edi), %xmm3
|
|
# else
|
|
movdqa 32(%edx), %xmm3
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm3
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm3, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 48(%edi), %xmm4
|
|
# else
|
|
movdqa 48(%edx), %xmm4
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm4
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm4, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 64(%edi), %edi
|
|
sub $64, %edx
|
|
jbe L(exit_loop)
|
|
|
|
movdqa (%edi), %xmm0
|
|
# else
|
|
lea 64(%edx), %edx
|
|
movdqa (%edx), %xmm0
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm0
|
|
xor %ecx, %ecx
|
|
pmovmskb %xmm0, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 16(%edi), %xmm2
|
|
# else
|
|
movdqa 16(%edx), %xmm2
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm2
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm2, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 32(%edi), %xmm3
|
|
# else
|
|
movdqa 32(%edx), %xmm3
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm3
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm3, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 48(%edi), %xmm4
|
|
# else
|
|
movdqa 48(%edx), %xmm4
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm4
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm4, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 64(%edi), %edi
|
|
mov %edi, %ecx
|
|
and $-64, %edi
|
|
and $63, %ecx
|
|
add %ecx, %edx
|
|
# else
|
|
lea 64(%edx), %edx
|
|
and $-64, %edx
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(align64_loop):
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
sub $64, %edx
|
|
jbe L(exit_loop)
|
|
movdqa (%edi), %xmm0
|
|
movdqa 16(%edi), %xmm2
|
|
movdqa 32(%edi), %xmm3
|
|
movdqa 48(%edi), %xmm4
|
|
# else
|
|
movdqa (%edx), %xmm0
|
|
movdqa 16(%edx), %xmm2
|
|
movdqa 32(%edx), %xmm3
|
|
movdqa 48(%edx), %xmm4
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm0
|
|
pcmpeqb %xmm1, %xmm2
|
|
pcmpeqb %xmm1, %xmm3
|
|
pcmpeqb %xmm1, %xmm4
|
|
|
|
pmaxub %xmm0, %xmm3
|
|
pmaxub %xmm2, %xmm4
|
|
pmaxub %xmm3, %xmm4
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
add $64, %edi
|
|
# else
|
|
add $64, %edx
|
|
# endif
|
|
pmovmskb %xmm4, %eax
|
|
|
|
test %eax, %eax
|
|
jz L(align64_loop)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
sub $64, %edi
|
|
# else
|
|
sub $64, %edx
|
|
# endif
|
|
|
|
pmovmskb %xmm0, %eax
|
|
xor %ecx, %ecx
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
pmovmskb %xmm2, %eax
|
|
lea 16(%ecx), %ecx
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
movdqa 32(%edi), %xmm3
|
|
# else
|
|
movdqa 32(%edx), %xmm3
|
|
# endif
|
|
pcmpeqb %xmm1, %xmm3
|
|
pmovmskb %xmm3, %eax
|
|
lea 16(%ecx), %ecx
|
|
test %eax, %eax
|
|
jnz L(match_case1)
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
pcmpeqb 48(%edi), %xmm1
|
|
# else
|
|
pcmpeqb 48(%edx), %xmm1
|
|
# endif
|
|
pmovmskb %xmm1, %eax
|
|
lea 16(%ecx), %ecx
|
|
|
|
.p2align 4
|
|
L(match_case1):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
add %ecx, %edi
|
|
# else
|
|
L(match_case1_prolog1):
|
|
add %ecx, %edx
|
|
L(match_case1_prolog):
|
|
# endif
|
|
test %al, %al
|
|
jz L(match_case1_high)
|
|
mov %al, %cl
|
|
and $15, %cl
|
|
jz L(match_case1_8)
|
|
test $0x01, %al
|
|
jnz L(ExitCase1_1)
|
|
test $0x02, %al
|
|
jnz L(ExitCase1_2)
|
|
test $0x04, %al
|
|
jnz L(ExitCase1_3)
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 3(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 3(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(match_case1_8):
|
|
test $0x10, %al
|
|
jnz L(ExitCase1_5)
|
|
test $0x20, %al
|
|
jnz L(ExitCase1_6)
|
|
test $0x40, %al
|
|
jnz L(ExitCase1_7)
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 7(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 7(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(match_case1_high):
|
|
mov %ah, %ch
|
|
and $15, %ch
|
|
jz L(match_case1_high_8)
|
|
test $0x01, %ah
|
|
jnz L(ExitCase1_9)
|
|
test $0x02, %ah
|
|
jnz L(ExitCase1_10)
|
|
test $0x04, %ah
|
|
jnz L(ExitCase1_11)
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 11(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 11(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(match_case1_high_8):
|
|
test $0x10, %ah
|
|
jnz L(ExitCase1_13)
|
|
test $0x20, %ah
|
|
jnz L(ExitCase1_14)
|
|
test $0x40, %ah
|
|
jnz L(ExitCase1_15)
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 15(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 15(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
.p2align 4
|
|
L(exit_loop):
|
|
add $64, %edx
|
|
|
|
movdqa (%edi), %xmm0
|
|
pcmpeqb %xmm1, %xmm0
|
|
xor %ecx, %ecx
|
|
pmovmskb %xmm0, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case2)
|
|
cmp $16, %edx
|
|
jbe L(return_null)
|
|
|
|
movdqa 16(%edi), %xmm2
|
|
pcmpeqb %xmm1, %xmm2
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm2, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case2)
|
|
cmp $32, %edx
|
|
jbe L(return_null)
|
|
|
|
movdqa 32(%edi), %xmm3
|
|
pcmpeqb %xmm1, %xmm3
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm3, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case2)
|
|
cmp $48, %edx
|
|
jbe L(return_null)
|
|
|
|
pcmpeqb 48(%edi), %xmm1
|
|
lea 16(%ecx), %ecx
|
|
pmovmskb %xmm1, %eax
|
|
test %eax, %eax
|
|
jnz L(match_case2)
|
|
|
|
xor %eax, %eax
|
|
RETURN
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_1):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
mov %edi, %eax
|
|
RETURN
|
|
# else
|
|
mov %edx, %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_2):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 1(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 1(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_3):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 2(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 2(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_5):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 4(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 4(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_6):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 5(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 5(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_7):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 6(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 6(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_9):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 8(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 8(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_10):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 9(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 9(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_11):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 10(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 10(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_13):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 12(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 12(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_14):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 13(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 13(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(ExitCase1_15):
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
lea 14(%edi), %eax
|
|
RETURN
|
|
# else
|
|
lea 14(%edx), %eax
|
|
ret
|
|
# endif
|
|
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
.p2align 4
|
|
L(match_case2):
|
|
sub %ecx, %edx
|
|
L(match_case2_prolog1):
|
|
add %ecx, %edi
|
|
L(match_case2_prolog):
|
|
test %al, %al
|
|
jz L(match_case2_high)
|
|
mov %al, %cl
|
|
and $15, %cl
|
|
jz L(match_case2_8)
|
|
test $0x01, %al
|
|
jnz L(ExitCase2_1)
|
|
test $0x02, %al
|
|
jnz L(ExitCase2_2)
|
|
test $0x04, %al
|
|
jnz L(ExitCase2_3)
|
|
sub $4, %edx
|
|
jb L(return_null)
|
|
lea 3(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(match_case2_8):
|
|
test $0x10, %al
|
|
jnz L(ExitCase2_5)
|
|
test $0x20, %al
|
|
jnz L(ExitCase2_6)
|
|
test $0x40, %al
|
|
jnz L(ExitCase2_7)
|
|
sub $8, %edx
|
|
jb L(return_null)
|
|
lea 7(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(match_case2_high):
|
|
mov %ah, %ch
|
|
and $15, %ch
|
|
jz L(match_case2_high_8)
|
|
test $0x01, %ah
|
|
jnz L(ExitCase2_9)
|
|
test $0x02, %ah
|
|
jnz L(ExitCase2_10)
|
|
test $0x04, %ah
|
|
jnz L(ExitCase2_11)
|
|
sub $12, %edx
|
|
jb L(return_null)
|
|
lea 11(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(match_case2_high_8):
|
|
test $0x10, %ah
|
|
jnz L(ExitCase2_13)
|
|
test $0x20, %ah
|
|
jnz L(ExitCase2_14)
|
|
test $0x40, %ah
|
|
jnz L(ExitCase2_15)
|
|
sub $16, %edx
|
|
jb L(return_null)
|
|
lea 15(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_1):
|
|
mov %edi, %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_2):
|
|
sub $2, %edx
|
|
jb L(return_null)
|
|
lea 1(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_3):
|
|
sub $3, %edx
|
|
jb L(return_null)
|
|
lea 2(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_5):
|
|
sub $5, %edx
|
|
jb L(return_null)
|
|
lea 4(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_6):
|
|
sub $6, %edx
|
|
jb L(return_null)
|
|
lea 5(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_7):
|
|
sub $7, %edx
|
|
jb L(return_null)
|
|
lea 6(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_9):
|
|
sub $9, %edx
|
|
jb L(return_null)
|
|
lea 8(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_10):
|
|
sub $10, %edx
|
|
jb L(return_null)
|
|
lea 9(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_11):
|
|
sub $11, %edx
|
|
jb L(return_null)
|
|
lea 10(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_13):
|
|
sub $13, %edx
|
|
jb L(return_null)
|
|
lea 12(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_14):
|
|
sub $14, %edx
|
|
jb L(return_null)
|
|
lea 13(%edi), %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(ExitCase2_15):
|
|
sub $15, %edx
|
|
jb L(return_null)
|
|
lea 14(%edi), %eax
|
|
RETURN
|
|
# endif
|
|
|
|
.p2align 4
|
|
L(return_null):
|
|
xor %eax, %eax
|
|
# ifndef USE_AS_RAWMEMCHR
|
|
RETURN
|
|
# else
|
|
ret
|
|
# endif
|
|
|
|
END (MEMCHR)
|
|
#endif
|