mirror of
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558 lines
8.9 KiB
ArmAsm
558 lines
8.9 KiB
ArmAsm
/* strcat with SSSE3
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Copyright (C) 2011-2013 Free Software Foundation, Inc.
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Contributed by Intel Corporation.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef NOT_IN_libc
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# include <sysdep.h>
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# ifndef STRCAT
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# define STRCAT __strcat_ssse3
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# endif
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# define USE_AS_STRCAT
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.text
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ENTRY (STRCAT)
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# ifdef USE_AS_STRNCAT
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mov %rdx, %r8
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# endif
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# define RETURN jmp L(StartStrcpyPart)
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# include "strlen-sse2-no-bsf.S"
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# undef RETURN
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L(StartStrcpyPart):
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mov %rsi, %rcx
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lea (%rdi, %rax), %rdx
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# ifdef USE_AS_STRNCAT
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test %r8, %r8
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jz L(StrncatExit0)
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cmp $8, %r8
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jbe L(StrncatExit8Bytes)
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# endif
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cmpb $0, (%rcx)
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jz L(Exit1)
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cmpb $0, 1(%rcx)
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jz L(Exit2)
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cmpb $0, 2(%rcx)
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jz L(Exit3)
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cmpb $0, 3(%rcx)
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jz L(Exit4)
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cmpb $0, 4(%rcx)
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jz L(Exit5)
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cmpb $0, 5(%rcx)
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jz L(Exit6)
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cmpb $0, 6(%rcx)
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jz L(Exit7)
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cmpb $0, 7(%rcx)
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jz L(Exit8)
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cmpb $0, 8(%rcx)
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jz L(Exit9)
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# ifdef USE_AS_STRNCAT
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cmp $16, %r8
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jb L(StrncatExit15Bytes)
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# endif
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cmpb $0, 9(%rcx)
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jz L(Exit10)
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cmpb $0, 10(%rcx)
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jz L(Exit11)
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cmpb $0, 11(%rcx)
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jz L(Exit12)
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cmpb $0, 12(%rcx)
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jz L(Exit13)
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cmpb $0, 13(%rcx)
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jz L(Exit14)
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cmpb $0, 14(%rcx)
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jz L(Exit15)
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cmpb $0, 15(%rcx)
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jz L(Exit16)
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# ifdef USE_AS_STRNCAT
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cmp $16, %r8
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je L(StrncatExit16)
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# define USE_AS_STRNCPY
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# endif
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# include "strcpy-ssse3.S"
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.p2align 4
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L(CopyFrom1To16Bytes):
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add %rsi, %rdx
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add %rsi, %rcx
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test %al, %al
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jz L(ExitHigh)
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test $0x01, %al
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jnz L(Exit1)
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test $0x02, %al
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jnz L(Exit2)
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test $0x04, %al
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jnz L(Exit3)
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test $0x08, %al
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jnz L(Exit4)
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test $0x10, %al
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jnz L(Exit5)
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test $0x20, %al
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jnz L(Exit6)
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test $0x40, %al
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jnz L(Exit7)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(ExitHigh):
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test $0x01, %ah
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jnz L(Exit9)
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test $0x02, %ah
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jnz L(Exit10)
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test $0x04, %ah
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jnz L(Exit11)
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test $0x08, %ah
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jnz L(Exit12)
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test $0x10, %ah
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jnz L(Exit13)
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test $0x20, %ah
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jnz L(Exit14)
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test $0x40, %ah
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jnz L(Exit15)
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movlpd (%rcx), %xmm0
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movlpd 8(%rcx), %xmm1
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movlpd %xmm0, (%rdx)
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movlpd %xmm1, 8(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit1):
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xor %ah, %ah
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movb %ah, 1(%rdx)
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L(Exit1):
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movb (%rcx), %al
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movb %al, (%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit2):
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xor %ah, %ah
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movb %ah, 2(%rdx)
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L(Exit2):
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movw (%rcx), %ax
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movw %ax, (%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit3):
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xor %ah, %ah
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movb %ah, 3(%rdx)
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L(Exit3):
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movw (%rcx), %ax
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movw %ax, (%rdx)
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movb 2(%rcx), %al
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movb %al, 2(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit4):
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xor %ah, %ah
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movb %ah, 4(%rdx)
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L(Exit4):
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mov (%rcx), %eax
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mov %eax, (%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit5):
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xor %ah, %ah
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movb %ah, 5(%rdx)
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L(Exit5):
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mov (%rcx), %eax
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mov %eax, (%rdx)
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movb 4(%rcx), %al
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movb %al, 4(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit6):
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xor %ah, %ah
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movb %ah, 6(%rdx)
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L(Exit6):
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mov (%rcx), %eax
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mov %eax, (%rdx)
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movw 4(%rcx), %ax
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movw %ax, 4(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit7):
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xor %ah, %ah
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movb %ah, 7(%rdx)
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L(Exit7):
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mov (%rcx), %eax
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mov %eax, (%rdx)
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mov 3(%rcx), %eax
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mov %eax, 3(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit8):
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xor %ah, %ah
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movb %ah, 8(%rdx)
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L(Exit8):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit9):
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xor %ah, %ah
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movb %ah, 9(%rdx)
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L(Exit9):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movb 8(%rcx), %al
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movb %al, 8(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit10):
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xor %ah, %ah
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movb %ah, 10(%rdx)
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L(Exit10):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movw 8(%rcx), %ax
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movw %ax, 8(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit11):
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xor %ah, %ah
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movb %ah, 11(%rdx)
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L(Exit11):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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mov 7(%rcx), %eax
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mov %eax, 7(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit12):
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xor %ah, %ah
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movb %ah, 12(%rdx)
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L(Exit12):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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mov 8(%rcx), %eax
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mov %eax, 8(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit13):
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xor %ah, %ah
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movb %ah, 13(%rdx)
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L(Exit13):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 5(%rcx), %xmm1
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movlpd %xmm1, 5(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit14):
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xor %ah, %ah
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movb %ah, 14(%rdx)
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L(Exit14):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 6(%rcx), %xmm1
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movlpd %xmm1, 6(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit15):
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xor %ah, %ah
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movb %ah, 15(%rdx)
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L(Exit15):
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 7(%rcx), %xmm1
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movlpd %xmm1, 7(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit16):
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xor %ah, %ah
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movb %ah, 16(%rdx)
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L(Exit16):
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movlpd (%rcx), %xmm0
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movlpd 8(%rcx), %xmm1
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movlpd %xmm0, (%rdx)
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movlpd %xmm1, 8(%rdx)
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mov %rdi, %rax
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ret
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# ifdef USE_AS_STRNCPY
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.p2align 4
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L(CopyFrom1To16BytesCase2):
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add $16, %r8
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add %rsi, %rcx
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lea (%rsi, %rdx), %rsi
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lea -9(%r8), %rdx
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and $1<<7, %dh
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or %al, %dh
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test %dh, %dh
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lea (%rsi), %rdx
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jz L(ExitHighCase2)
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test $0x01, %al
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jnz L(Exit1)
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cmp $1, %r8
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je L(StrncatExit1)
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test $0x02, %al
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jnz L(Exit2)
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cmp $2, %r8
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je L(StrncatExit2)
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test $0x04, %al
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jnz L(Exit3)
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cmp $3, %r8
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je L(StrncatExit3)
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test $0x08, %al
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jnz L(Exit4)
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cmp $4, %r8
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je L(StrncatExit4)
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test $0x10, %al
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jnz L(Exit5)
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cmp $5, %r8
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je L(StrncatExit5)
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test $0x20, %al
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jnz L(Exit6)
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cmp $6, %r8
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je L(StrncatExit6)
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test $0x40, %al
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jnz L(Exit7)
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cmp $7, %r8
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je L(StrncatExit7)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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lea 7(%rdx), %rax
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cmpb $1, (%rax)
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sbb $-1, %rax
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xor %cl, %cl
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movb %cl, (%rax)
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mov %rdi, %rax
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ret
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.p2align 4
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L(ExitHighCase2):
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test $0x01, %ah
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jnz L(Exit9)
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cmp $9, %r8
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je L(StrncatExit9)
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test $0x02, %ah
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jnz L(Exit10)
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cmp $10, %r8
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je L(StrncatExit10)
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test $0x04, %ah
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jnz L(Exit11)
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cmp $11, %r8
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je L(StrncatExit11)
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test $0x8, %ah
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jnz L(Exit12)
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cmp $12, %r8
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je L(StrncatExit12)
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test $0x10, %ah
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jnz L(Exit13)
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cmp $13, %r8
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je L(StrncatExit13)
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test $0x20, %ah
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jnz L(Exit14)
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cmp $14, %r8
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je L(StrncatExit14)
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test $0x40, %ah
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jnz L(Exit15)
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cmp $15, %r8
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je L(StrncatExit15)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 8(%rcx), %xmm1
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movlpd %xmm1, 8(%rdx)
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mov %rdi, %rax
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ret
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L(CopyFrom1To16BytesCase2OrCase3):
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test %rax, %rax
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jnz L(CopyFrom1To16BytesCase2)
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.p2align 4
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L(CopyFrom1To16BytesCase3):
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add $16, %r8
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add %rsi, %rdx
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add %rsi, %rcx
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cmp $8, %r8
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ja L(ExitHighCase3)
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cmp $1, %r8
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je L(StrncatExit1)
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cmp $2, %r8
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je L(StrncatExit2)
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cmp $3, %r8
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je L(StrncatExit3)
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cmp $4, %r8
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je L(StrncatExit4)
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cmp $5, %r8
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je L(StrncatExit5)
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cmp $6, %r8
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je L(StrncatExit6)
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cmp $7, %r8
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je L(StrncatExit7)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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xor %ah, %ah
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movb %ah, 8(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(ExitHighCase3):
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cmp $9, %r8
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je L(StrncatExit9)
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cmp $10, %r8
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je L(StrncatExit10)
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cmp $11, %r8
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je L(StrncatExit11)
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cmp $12, %r8
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je L(StrncatExit12)
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cmp $13, %r8
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je L(StrncatExit13)
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cmp $14, %r8
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je L(StrncatExit14)
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cmp $15, %r8
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je L(StrncatExit15)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 8(%rcx), %xmm1
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movlpd %xmm1, 8(%rdx)
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xor %ah, %ah
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movb %ah, 16(%rdx)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit0):
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit15Bytes):
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cmp $9, %r8
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je L(StrncatExit9)
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cmpb $0, 9(%rcx)
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jz L(Exit10)
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cmp $10, %r8
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je L(StrncatExit10)
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cmpb $0, 10(%rcx)
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jz L(Exit11)
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cmp $11, %r8
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je L(StrncatExit11)
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cmpb $0, 11(%rcx)
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jz L(Exit12)
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cmp $12, %r8
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je L(StrncatExit12)
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cmpb $0, 12(%rcx)
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jz L(Exit13)
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cmp $13, %r8
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je L(StrncatExit13)
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cmpb $0, 13(%rcx)
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jz L(Exit14)
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cmp $14, %r8
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je L(StrncatExit14)
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movlpd (%rcx), %xmm0
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movlpd %xmm0, (%rdx)
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movlpd 7(%rcx), %xmm1
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movlpd %xmm1, 7(%rdx)
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lea 14(%rdx), %rax
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cmpb $1, (%rax)
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sbb $-1, %rax
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xor %cl, %cl
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movb %cl, (%rax)
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mov %rdi, %rax
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ret
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.p2align 4
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L(StrncatExit8Bytes):
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cmpb $0, (%rcx)
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jz L(Exit1)
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cmp $1, %r8
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je L(StrncatExit1)
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cmpb $0, 1(%rcx)
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jz L(Exit2)
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cmp $2, %r8
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je L(StrncatExit2)
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cmpb $0, 2(%rcx)
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jz L(Exit3)
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cmp $3, %r8
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je L(StrncatExit3)
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cmpb $0, 3(%rcx)
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jz L(Exit4)
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cmp $4, %r8
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je L(StrncatExit4)
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cmpb $0, 4(%rcx)
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jz L(Exit5)
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cmp $5, %r8
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je L(StrncatExit5)
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cmpb $0, 5(%rcx)
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jz L(Exit6)
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cmp $6, %r8
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je L(StrncatExit6)
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cmpb $0, 6(%rcx)
|
|
jz L(Exit7)
|
|
cmp $7, %r8
|
|
je L(StrncatExit7)
|
|
movlpd (%rcx), %xmm0
|
|
movlpd %xmm0, (%rdx)
|
|
lea 7(%rdx), %rax
|
|
cmpb $1, (%rax)
|
|
sbb $-1, %rax
|
|
xor %cl, %cl
|
|
movb %cl, (%rax)
|
|
mov %rdi, %rax
|
|
ret
|
|
|
|
# endif
|
|
END (STRCAT)
|
|
#endif
|