mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 01:40:07 +00:00
339 lines
5.6 KiB
ArmAsm
339 lines
5.6 KiB
ArmAsm
/* strlen with SSE2
|
|
Copyright (C) 2010, 2011 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#if (defined USE_AS_STRCAT || defined SHARED) && !defined NOT_IN_libc
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
# include <sysdep.h>
|
|
# include "asm-syntax.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)
|
|
# define PARMS 4
|
|
# define STR PARMS
|
|
# define ENTRANCE
|
|
# define RETURN ret
|
|
|
|
.text
|
|
ENTRY (__strlen_sse2)
|
|
ENTRANCE
|
|
mov STR(%esp), %edx
|
|
# endif
|
|
xor %eax, %eax
|
|
cmpb $0, (%edx)
|
|
jz L(exit_tail0)
|
|
cmpb $0, 1(%edx)
|
|
jz L(exit_tail1)
|
|
cmpb $0, 2(%edx)
|
|
jz L(exit_tail2)
|
|
cmpb $0, 3(%edx)
|
|
jz L(exit_tail3)
|
|
cmpb $0, 4(%edx)
|
|
jz L(exit_tail4)
|
|
cmpb $0, 5(%edx)
|
|
jz L(exit_tail5)
|
|
cmpb $0, 6(%edx)
|
|
jz L(exit_tail6)
|
|
cmpb $0, 7(%edx)
|
|
jz L(exit_tail7)
|
|
cmpb $0, 8(%edx)
|
|
jz L(exit_tail8)
|
|
cmpb $0, 9(%edx)
|
|
jz L(exit_tail9)
|
|
cmpb $0, 10(%edx)
|
|
jz L(exit_tail10)
|
|
cmpb $0, 11(%edx)
|
|
jz L(exit_tail11)
|
|
cmpb $0, 12(%edx)
|
|
jz L(exit_tail12)
|
|
cmpb $0, 13(%edx)
|
|
jz L(exit_tail13)
|
|
cmpb $0, 14(%edx)
|
|
jz L(exit_tail14)
|
|
cmpb $0, 15(%edx)
|
|
jz L(exit_tail15)
|
|
pxor %xmm0, %xmm0
|
|
mov %edx, %eax
|
|
lea 16(%edx), %ecx
|
|
and $-16, %eax
|
|
add $16, %eax
|
|
|
|
pcmpeqb (%eax), %xmm0
|
|
pmovmskb %xmm0, %edx
|
|
pxor %xmm1, %xmm1
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edx
|
|
pxor %xmm2, %xmm2
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
|
|
pcmpeqb (%eax), %xmm2
|
|
pmovmskb %xmm2, %edx
|
|
pxor %xmm3, %xmm3
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm0
|
|
pmovmskb %xmm0, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm2
|
|
pmovmskb %xmm2, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm0
|
|
pmovmskb %xmm0, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm2
|
|
pmovmskb %xmm2, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm0
|
|
pmovmskb %xmm0, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm2
|
|
pmovmskb %xmm2, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
pcmpeqb (%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea 16(%eax), %eax
|
|
jnz L(exit)
|
|
|
|
and $-0x40, %eax
|
|
L(aligned_64):
|
|
movaps (%eax), %xmm0
|
|
movaps 16(%eax), %xmm1
|
|
movaps 32(%eax), %xmm2
|
|
movaps 48(%eax), %xmm6
|
|
pminub %xmm1, %xmm0
|
|
pminub %xmm6, %xmm2
|
|
pminub %xmm0, %xmm2
|
|
pcmpeqb %xmm3, %xmm2
|
|
pmovmskb %xmm2, %edx
|
|
test %edx, %edx
|
|
lea 64(%eax), %eax
|
|
jz L(aligned_64)
|
|
|
|
pcmpeqb -64(%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea 48(%ecx), %ecx
|
|
jnz L(exit)
|
|
|
|
pcmpeqb %xmm1, %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea -16(%ecx), %ecx
|
|
jnz L(exit)
|
|
|
|
pcmpeqb -32(%eax), %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
test %edx, %edx
|
|
lea -16(%ecx), %ecx
|
|
jnz L(exit)
|
|
|
|
pcmpeqb %xmm6, %xmm3
|
|
pmovmskb %xmm3, %edx
|
|
lea -16(%ecx), %ecx
|
|
L(exit):
|
|
sub %ecx, %eax
|
|
test %dl, %dl
|
|
jz L(exit_high)
|
|
test $0x01, %dl
|
|
jnz L(exit_tail0)
|
|
|
|
test $0x02, %dl
|
|
jnz L(exit_tail1)
|
|
|
|
test $0x04, %dl
|
|
jnz L(exit_tail2)
|
|
|
|
test $0x08, %dl
|
|
jnz L(exit_tail3)
|
|
|
|
test $0x10, %dl
|
|
jnz L(exit_tail4)
|
|
|
|
test $0x20, %dl
|
|
jnz L(exit_tail5)
|
|
|
|
test $0x40, %dl
|
|
jnz L(exit_tail6)
|
|
add $7, %eax
|
|
L(exit_tail0):
|
|
RETURN
|
|
|
|
L(exit_high):
|
|
add $8, %eax
|
|
test $0x01, %dh
|
|
jnz L(exit_tail0)
|
|
|
|
test $0x02, %dh
|
|
jnz L(exit_tail1)
|
|
|
|
test $0x04, %dh
|
|
jnz L(exit_tail2)
|
|
|
|
test $0x08, %dh
|
|
jnz L(exit_tail3)
|
|
|
|
test $0x10, %dh
|
|
jnz L(exit_tail4)
|
|
|
|
test $0x20, %dh
|
|
jnz L(exit_tail5)
|
|
|
|
test $0x40, %dh
|
|
jnz L(exit_tail6)
|
|
add $7, %eax
|
|
RETURN
|
|
|
|
.p2align 4
|
|
L(exit_tail1):
|
|
add $1, %eax
|
|
RETURN
|
|
|
|
L(exit_tail2):
|
|
add $2, %eax
|
|
RETURN
|
|
|
|
L(exit_tail3):
|
|
add $3, %eax
|
|
RETURN
|
|
|
|
L(exit_tail4):
|
|
add $4, %eax
|
|
RETURN
|
|
|
|
L(exit_tail5):
|
|
add $5, %eax
|
|
RETURN
|
|
|
|
L(exit_tail6):
|
|
add $6, %eax
|
|
RETURN
|
|
|
|
L(exit_tail7):
|
|
add $7, %eax
|
|
RETURN
|
|
|
|
L(exit_tail8):
|
|
add $8, %eax
|
|
RETURN
|
|
|
|
L(exit_tail9):
|
|
add $9, %eax
|
|
RETURN
|
|
|
|
L(exit_tail10):
|
|
add $10, %eax
|
|
RETURN
|
|
|
|
L(exit_tail11):
|
|
add $11, %eax
|
|
RETURN
|
|
|
|
L(exit_tail12):
|
|
add $12, %eax
|
|
RETURN
|
|
|
|
L(exit_tail13):
|
|
add $13, %eax
|
|
RETURN
|
|
|
|
L(exit_tail14):
|
|
add $14, %eax
|
|
RETURN
|
|
|
|
L(exit_tail15):
|
|
add $15, %eax
|
|
# ifndef USE_AS_STRCAT
|
|
ret
|
|
END (__strlen_sse2)
|
|
# endif
|
|
#endif
|