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bionic/libc/arch-x86/string/ssse3-strcat-atom.S
Liubov Dmitrieva 0a490665a3 bionic/x86: Optimization for string routines 
Optimized strcpy, strcat,
strncpy, strncat, strlcpy, strlcat,
memchr, memrchr, strchr, strrchr, index,
strnlen, strlen, wcslen, wmemcmp, wcscmp,
wcschr, wcsrchr, wcscpy, wcscat

Change-Id: I82b29132edf9a2e144e0bb3ee4ff5217df8d2a6d
Signed-off-by: Liubov Dmitrieva <liubov.dmitrieva@intel.com>
2013-05-31 13:37:03 +04:00

621 lines
11 KiB
ArmAsm
Raw Blame History

/*
Copyright (c) 2011, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef L
# define L(label) .L##label
#endif
#ifndef cfi_startproc
# define cfi_startproc .cfi_startproc
#endif
#ifndef cfi_endproc
# define cfi_endproc .cfi_endproc
#endif
#ifndef cfi_rel_offset
# define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
#endif
#ifndef cfi_restore
# define cfi_restore(reg) .cfi_restore reg
#endif
#ifndef cfi_adjust_cfa_offset
# define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
#endif
#ifndef cfi_remember_state
# define cfi_remember_state .cfi_remember_state
#endif
#ifndef cfi_restore_state
# define cfi_restore_state .cfi_restore_state
#endif
#ifndef ENTRY
# define ENTRY(name) \
.type name, @function; \
.globl name; \
.p2align 4; \
name: \
cfi_startproc
#endif
#ifndef END
# define END(name) \
cfi_endproc; \
.size name, .-name
#endif
#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 STRCAT
# define STRCAT strcat
#endif
#define PARMS 4
#define STR1 PARMS+4
#define STR2 STR1+4
#ifdef USE_AS_STRNCAT
# define LEN STR2+8
#endif
#define USE_AS_STRCAT
.section .text.ssse3,"ax",@progbits
ENTRY (STRCAT)
PUSH (%edi)
mov STR1(%esp), %edi
mov %edi, %edx
#define RETURN jmp L(StrcpyAtom)
#include "sse2-strlen-atom.S"
L(StrcpyAtom):
mov STR2(%esp), %ecx
lea (%edi, %eax), %edx
#ifdef USE_AS_STRNCAT
PUSH (%ebx)
mov LEN(%esp), %ebx
test %ebx, %ebx
jz L(StrncatExit0)
cmp $8, %ebx
jbe L(StrncpyExit8Bytes)
#endif
cmpb $0, (%ecx)
jz L(Exit1)
cmpb $0, 1(%ecx)
jz L(Exit2)
cmpb $0, 2(%ecx)
jz L(Exit3)
cmpb $0, 3(%ecx)
jz L(Exit4)
cmpb $0, 4(%ecx)
jz L(Exit5)
cmpb $0, 5(%ecx)
jz L(Exit6)
cmpb $0, 6(%ecx)
jz L(Exit7)
cmpb $0, 7(%ecx)
jz L(Exit8)
cmpb $0, 8(%ecx)
jz L(Exit9)
#ifdef USE_AS_STRNCAT
cmp $16, %ebx
jb L(StrncpyExit15Bytes)
#endif
cmpb $0, 9(%ecx)
jz L(Exit10)
cmpb $0, 10(%ecx)
jz L(Exit11)
cmpb $0, 11(%ecx)
jz L(Exit12)
cmpb $0, 12(%ecx)
jz L(Exit13)
cmpb $0, 13(%ecx)
jz L(Exit14)
cmpb $0, 14(%ecx)
jz L(Exit15)
cmpb $0, 15(%ecx)
jz L(Exit16)
#ifdef USE_AS_STRNCAT
cmp $16, %ebx
je L(StrncatExit16)
# define RETURN1 POP (%ebx); POP (%edi); ret; \
CFI_PUSH (%ebx); CFI_PUSH (%edi)
# define USE_AS_STRNCPY
#else
# define RETURN1 POP(%edi); ret; CFI_PUSH(%edi)
#endif
#include "ssse3-strcpy-atom.S"
.p2align 4
L(CopyFrom1To16Bytes):
add %esi, %edx
add %esi, %ecx
POP (%esi)
test %al, %al
jz L(ExitHigh)
test $0x01, %al
jnz L(Exit1)
test $0x02, %al
jnz L(Exit2)
test $0x04, %al
jnz L(Exit3)
test $0x08, %al
jnz L(Exit4)
test $0x10, %al
jnz L(Exit5)
test $0x20, %al
jnz L(Exit6)
test $0x40, %al
jnz L(Exit7)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(ExitHigh):
test $0x01, %ah
jnz L(Exit9)
test $0x02, %ah
jnz L(Exit10)
test $0x04, %ah
jnz L(Exit11)
test $0x08, %ah
jnz L(Exit12)
test $0x10, %ah
jnz L(Exit13)
test $0x20, %ah
jnz L(Exit14)
test $0x40, %ah
jnz L(Exit15)
movlpd (%ecx), %xmm0
movlpd 8(%ecx), %xmm1
movlpd %xmm0, (%edx)
movlpd %xmm1, 8(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit1):
movb %bh, 1(%edx)
L(Exit1):
movb (%ecx), %al
movb %al, (%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit2):
movb %bh, 2(%edx)
L(Exit2):
movw (%ecx), %ax
movw %ax, (%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit3):
movb %bh, 3(%edx)
L(Exit3):
movw (%ecx), %ax
movw %ax, (%edx)
movb 2(%ecx), %al
movb %al, 2(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit4):
movb %bh, 4(%edx)
L(Exit4):
movl (%ecx), %eax
movl %eax, (%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit5):
movb %bh, 5(%edx)
L(Exit5):
movl (%ecx), %eax
movl %eax, (%edx)
movb 4(%ecx), %al
movb %al, 4(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit6):
movb %bh, 6(%edx)
L(Exit6):
movl (%ecx), %eax
movl %eax, (%edx)
movw 4(%ecx), %ax
movw %ax, 4(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit7):
movb %bh, 7(%edx)
L(Exit7):
movl (%ecx), %eax
movl %eax, (%edx)
movl 3(%ecx), %eax
movl %eax, 3(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit8):
movb %bh, 8(%edx)
L(Exit8):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit9):
movb %bh, 9(%edx)
L(Exit9):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movb 8(%ecx), %al
movb %al, 8(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit10):
movb %bh, 10(%edx)
L(Exit10):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movw 8(%ecx), %ax
movw %ax, 8(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit11):
movb %bh, 11(%edx)
L(Exit11):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl 7(%ecx), %eax
movl %eax, 7(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit12):
movb %bh, 12(%edx)
L(Exit12):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl 8(%ecx), %eax
movl %eax, 8(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit13):
movb %bh, 13(%edx)
L(Exit13):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 5(%ecx), %xmm0
movlpd %xmm0, 5(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit14):
movb %bh, 14(%edx)
L(Exit14):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 6(%ecx), %xmm0
movlpd %xmm0, 6(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit15):
movb %bh, 15(%edx)
L(Exit15):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 7(%ecx), %xmm0
movlpd %xmm0, 7(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit16):
movb %bh, 16(%edx)
L(Exit16):
movlpd (%ecx), %xmm0
movlpd 8(%ecx), %xmm1
movlpd %xmm0, (%edx)
movlpd %xmm1, 8(%edx)
movl %edi, %eax
RETURN1
#ifdef USE_AS_STRNCPY
CFI_PUSH(%esi)
.p2align 4
L(CopyFrom1To16BytesCase2):
add $16, %ebx
add %esi, %ecx
lea (%esi, %edx), %esi
lea -9(%ebx), %edx
and $1<<7, %dh
or %al, %dh
lea (%esi), %edx
POP (%esi)
jz L(ExitHighCase2)
test $0x01, %al
jnz L(Exit1)
cmp $1, %ebx
je L(StrncatExit1)
test $0x02, %al
jnz L(Exit2)
cmp $2, %ebx
je L(StrncatExit2)
test $0x04, %al
jnz L(Exit3)
cmp $3, %ebx
je L(StrncatExit3)
test $0x08, %al
jnz L(Exit4)
cmp $4, %ebx
je L(StrncatExit4)
test $0x10, %al
jnz L(Exit5)
cmp $5, %ebx
je L(StrncatExit5)
test $0x20, %al
jnz L(Exit6)
cmp $6, %ebx
je L(StrncatExit6)
test $0x40, %al
jnz L(Exit7)
cmp $7, %ebx
je L(StrncatExit7)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
lea 7(%edx), %eax
cmpb $1, (%eax)
sbb $-1, %eax
xor %cl, %cl
movb %cl, (%eax)
movl %edi, %eax
RETURN1
.p2align 4
L(ExitHighCase2):
test $0x01, %ah
jnz L(Exit9)
cmp $9, %ebx
je L(StrncatExit9)
test $0x02, %ah
jnz L(Exit10)
cmp $10, %ebx
je L(StrncatExit10)
test $0x04, %ah
jnz L(Exit11)
cmp $11, %ebx
je L(StrncatExit11)
test $0x8, %ah
jnz L(Exit12)
cmp $12, %ebx
je L(StrncatExit12)
test $0x10, %ah
jnz L(Exit13)
cmp $13, %ebx
je L(StrncatExit13)
test $0x20, %ah
jnz L(Exit14)
cmp $14, %ebx
je L(StrncatExit14)
test $0x40, %ah
jnz L(Exit15)
cmp $15, %ebx
je L(StrncatExit15)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 8(%ecx), %xmm1
movlpd %xmm1, 8(%edx)
movl %edi, %eax
RETURN1
CFI_PUSH(%esi)
L(CopyFrom1To16BytesCase2OrCase3):
test %eax, %eax
jnz L(CopyFrom1To16BytesCase2)
.p2align 4
L(CopyFrom1To16BytesCase3):
add $16, %ebx
add %esi, %edx
add %esi, %ecx
POP (%esi)
cmp $8, %ebx
ja L(ExitHighCase3)
cmp $1, %ebx
je L(StrncatExit1)
cmp $2, %ebx
je L(StrncatExit2)
cmp $3, %ebx
je L(StrncatExit3)
cmp $4, %ebx
je L(StrncatExit4)
cmp $5, %ebx
je L(StrncatExit5)
cmp $6, %ebx
je L(StrncatExit6)
cmp $7, %ebx
je L(StrncatExit7)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movb %bh, 8(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(ExitHighCase3):
cmp $9, %ebx
je L(StrncatExit9)
cmp $10, %ebx
je L(StrncatExit10)
cmp $11, %ebx
je L(StrncatExit11)
cmp $12, %ebx
je L(StrncatExit12)
cmp $13, %ebx
je L(StrncatExit13)
cmp $14, %ebx
je L(StrncatExit14)
cmp $15, %ebx
je L(StrncatExit15)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 8(%ecx), %xmm1
movlpd %xmm1, 8(%edx)
movb %bh, 16(%edx)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncatExit0):
movl %edi, %eax
RETURN1
.p2align 4
L(StrncpyExit15Bytes):
cmp $9, %ebx
je L(StrncatExit9)
cmpb $0, 9(%ecx)
jz L(Exit10)
cmp $10, %ebx
je L(StrncatExit10)
cmpb $0, 10(%ecx)
jz L(Exit11)
cmp $11, %ebx
je L(StrncatExit11)
cmpb $0, 11(%ecx)
jz L(Exit12)
cmp $12, %ebx
je L(StrncatExit12)
cmpb $0, 12(%ecx)
jz L(Exit13)
cmp $13, %ebx
je L(StrncatExit13)
cmpb $0, 13(%ecx)
jz L(Exit14)
cmp $14, %ebx
je L(StrncatExit14)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movlpd 7(%ecx), %xmm0
movlpd %xmm0, 7(%edx)
lea 14(%edx), %eax
cmpb $1, (%eax)
sbb $-1, %eax
movb %bh, (%eax)
movl %edi, %eax
RETURN1
.p2align 4
L(StrncpyExit8Bytes):
cmpb $0, (%ecx)
jz L(Exit1)
cmp $1, %ebx
je L(StrncatExit1)
cmpb $0, 1(%ecx)
jz L(Exit2)
cmp $2, %ebx
je L(StrncatExit2)
cmpb $0, 2(%ecx)
jz L(Exit3)
cmp $3, %ebx
je L(StrncatExit3)
cmpb $0, 3(%ecx)
jz L(Exit4)
cmp $4, %ebx
je L(StrncatExit4)
cmpb $0, 4(%ecx)
jz L(Exit5)
cmp $5, %ebx
je L(StrncatExit5)
cmpb $0, 5(%ecx)
jz L(Exit6)
cmp $6, %ebx
je L(StrncatExit6)
cmpb $0, 6(%ecx)
jz L(Exit7)
cmp $7, %ebx
je L(StrncatExit7)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
lea 7(%edx), %eax
cmpb $1, (%eax)
sbb $-1, %eax
movb %bh, (%eax)
movl %edi, %eax
RETURN1
#endif
END (STRCAT)
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