/* strchr with SSE2 without bsf

   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>

# include "asm-syntax.h"

	atom_text_section

ENTRY (__strchr_sse2_no_bsf)

	movd	%esi, %xmm1

	movq	%rdi, %rcx

	punpcklbw %xmm1, %xmm1

	andq	$~15, %rdi

	pxor	%xmm2, %xmm2

	punpcklbw %xmm1, %xmm1

	orl	$0xffffffff, %esi

	movdqa	(%rdi), %xmm0

	pshufd	$0, %xmm1, %xmm1

	subq	%rdi, %rcx

	movdqa	%xmm0, %xmm3

	leaq	16(%rdi), %rdi

	pcmpeqb	%xmm1, %xmm0

	pcmpeqb	%xmm2, %xmm3

	shl	%cl, %esi

	pmovmskb %xmm0, %eax

	pmovmskb %xmm3, %edx

	andl	%esi, %eax

	andl	%esi, %edx

	test	%eax, %eax

	jnz	L(matches)

	test	%edx, %edx

	jnz	L(return_null)

L(loop):

	movdqa	(%rdi), %xmm0

	leaq	16(%rdi), %rdi

	movdqa	%xmm0, %xmm3

	pcmpeqb	%xmm1, %xmm0

	pcmpeqb	%xmm2, %xmm3

	pmovmskb %xmm0, %eax

	pmovmskb %xmm3, %edx

	or	%eax, %edx

	jz	L(loop)

	pmovmskb %xmm3, %edx

	test	%eax, %eax

	jnz	L(matches)

/* Return NULL.  */

	.p2align 4

L(return_null):

	xor	%rax, %rax

	ret

L(matches):

	/* There is a match.  First find where NULL is.  */

	leaq	-16(%rdi), %rdi

	test	%edx, %edx

	jz	L(match_case1)

	.p2align 4

L(match_case2):

	test	%al, %al

	jz	L(match_high_case2)

	mov	%al, %cl

	and	$15, %cl

	jnz	L(match_case2_4)

	mov	%dl, %ch

	and	$15, %ch

	jnz	L(return_null)

	test	$0x10, %al

	jnz	L(Exit5)

	test	$0x10, %dl

	jnz	L(return_null)

	test	$0x20, %al

	jnz	L(Exit6)

	test	$0x20, %dl

	jnz	L(return_null)

	test	$0x40, %al

	jnz	L(Exit7)

	test	$0x40, %dl

	jnz	L(return_null)

	lea	7(%rdi), %rax

	ret

	.p2align 4

L(match_case2_4):

	test	$0x01, %al

	jnz	L(Exit1)

	test	$0x01, %dl

	jnz	L(return_null)

	test	$0x02, %al

	jnz	L(Exit2)

	test	$0x02, %dl

	jnz	L(return_null)

	test	$0x04, %al

	jnz	L(Exit3)

	test	$0x04, %dl

	jnz	L(return_null)

	lea	3(%rdi), %rax

	ret

	.p2align 4

L(match_high_case2):

	test	%dl, %dl

	jnz	L(return_null)

	mov	%ah, %cl

	and	$15, %cl

	jnz	L(match_case2_12)

	mov	%dh, %ch

	and	$15, %ch

	jnz	L(return_null)

	test	$0x10, %ah

	jnz	L(Exit13)

	test	$0x10, %dh

	jnz	L(return_null)

	test	$0x20, %ah

	jnz	L(Exit14)

	test	$0x20, %dh

	jnz	L(return_null)

	test	$0x40, %ah

	jnz	L(Exit15)

	test	$0x40, %dh

	jnz	L(return_null)

	lea	15(%rdi), %rax

	ret

	.p2align 4

L(match_case2_12):

	test	$0x01, %ah

	jnz	L(Exit9)

	test	$0x01, %dh

	jnz	L(return_null)

	test	$0x02, %ah

	jnz	L(Exit10)

	test	$0x02, %dh

	jnz	L(return_null)

	test	$0x04, %ah

	jnz	L(Exit11)

	test	$0x04, %dh

	jnz	L(return_null)

	lea	11(%rdi), %rax

	ret

	.p2align 4

L(match_case1):

	test	%al, %al

	jz	L(match_high_case1)

	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)

	lea	7(%rdi), %rax

	ret

	.p2align 4

L(match_high_case1):

	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)

	lea	15(%rdi), %rax

	ret

	.p2align 4

L(Exit1):

	lea	(%rdi), %rax

	ret

	.p2align 4

L(Exit2):

	lea	1(%rdi), %rax

	ret

	.p2align 4

L(Exit3):

	lea	2(%rdi), %rax

	ret

	.p2align 4

L(Exit4):

	lea	3(%rdi), %rax

	ret

	.p2align 4

L(Exit5):

	lea	4(%rdi), %rax

	ret

	.p2align 4

L(Exit6):

	lea	5(%rdi), %rax

	ret

	.p2align 4

L(Exit7):

	lea	6(%rdi), %rax

	ret

	.p2align 4

L(Exit9):

	lea	8(%rdi), %rax

	ret

	.p2align 4

L(Exit10):

	lea	9(%rdi), %rax

	ret

	.p2align 4

L(Exit11):

	lea	10(%rdi), %rax

	ret

	.p2align 4

L(Exit12):

	lea	11(%rdi), %rax

	ret

	.p2align 4

L(Exit13):

	lea	12(%rdi), %rax

	ret

	.p2align 4

L(Exit14):

	lea	13(%rdi), %rax

	ret

	.p2align 4

L(Exit15):

	lea	14(%rdi), %rax

	ret

END (__strchr_sse2_no_bsf)

#endif