/* strcat with SSSE3
Copyright (C) 2011-2018 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 STRCAT
# define STRCAT __strcat_ssse3
# 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
.text
ENTRY (STRCAT)
PUSH (%edi)
mov STR1(%esp), %edi
mov %edi, %edx
# define RETURN jmp L(StartStrcpyPart)
# include "strlen-sse2.S"
L(StartStrcpyPart):
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(StrncatExit8Bytes)
# 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(StrncatExit15Bytes)
# 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 "strcpy-ssse3.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
test %dh, %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(StrncatExit15Bytes):
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(StrncatExit8Bytes):
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)
#endif