libc/arch-x86/string/ssse3-memcmp3-new.S

/*
Copyright (c) 2010, 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 MEMCMP
# define MEMCMP		ssse3_memcmp3_new
#endif

#ifndef L
# define L(label)	.L##label
#endif

#ifndef ALIGN
# define ALIGN(n)	.p2align n
#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)

#define PARMS		4
#define BLK1		PARMS
#define BLK2		BLK1+4
#define LEN		BLK2+4
#define RETURN_END	POP (%edi); POP (%esi); POP (%ebx); ret
#define RETURN		RETURN_END; cfi_restore_state; cfi_remember_state

	.section .text.ssse3,"ax",@progbits
ENTRY (MEMCMP)
	movl	LEN(%esp), %ecx
	movl	BLK1(%esp), %eax
	cmp	$48, %ecx
	movl	BLK2(%esp), %edx
	jae	L(48bytesormore)
	cmp	$1, %ecx
	jbe	L(less1bytes)
	PUSH (%ebx)
	add	%ecx, %edx
	add	%ecx, %eax
	jmp	L(less48bytes)

	CFI_POP (%ebx)
	ALIGN (4)
L(less1bytes):
	jb	L(zero)
	movb	(%eax), %cl
	cmp	(%edx), %cl
	je	L(zero)
	mov	$1, %eax
	ja	L(1bytesend)
	neg	%eax
L(1bytesend):
	ret

	ALIGN (4)
L(zero):
	mov	$0, %eax
	ret

	ALIGN (4)
L(48bytesormore):
	PUSH (%ebx)
	PUSH (%esi)
	PUSH (%edi)
	cfi_remember_state
	movdqu    (%eax), %xmm3
	movdqu    (%edx), %xmm0
	movl	%eax, %edi
	movl	%edx, %esi
	pcmpeqb   %xmm0, %xmm3
	pmovmskb  %xmm3, %edx
	lea	16(%edi), %edi

	sub      $0xffff, %edx
	lea	16(%esi), %esi
	jnz	  L(less16bytes)
	mov	%edi, %edx
	and	$0xf, %edx
	xor	%edx, %edi
	sub	%edx, %esi
	add	%edx, %ecx
	mov	%esi, %edx
	and	$0xf, %edx
	jz	L(shr_0)
	xor	%edx, %esi

	cmp	$8, %edx
	jae	L(next_unaligned_table)
	cmp	$0, %edx
	je	L(shr_0)
	cmp	$1, %edx
	je	L(shr_1)
	cmp	$2, %edx
	je	L(shr_2)
	cmp	$3, %edx
	je	L(shr_3)
	cmp	$4, %edx
	je	L(shr_4)
	cmp	$5, %edx
	je	L(shr_5)
	cmp	$6, %edx
	je	L(shr_6)
	jmp	L(shr_7)

	ALIGN (4)
L(next_unaligned_table):
	cmp	$8, %edx
	je	L(shr_8)
	cmp	$9, %edx
	je	L(shr_9)
	cmp	$10, %edx
	je	L(shr_10)
	cmp	$11, %edx
	je	L(shr_11)
	cmp	$12, %edx
	je	L(shr_12)
	cmp	$13, %edx
	je	L(shr_13)
	cmp	$14, %edx
	je	L(shr_14)
	jmp	L(shr_15)

	ALIGN (4)
L(shr_0):
	cmp	$80, %ecx
	jae	L(shr_0_gobble)
	lea	-48(%ecx), %ecx
	xor	%eax, %eax
	movaps	(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1
	movaps	16(%esi), %xmm2
	pcmpeqb	16(%edi), %xmm2
	pand	%xmm1, %xmm2
	pmovmskb %xmm2, %edx
	add	$32, %edi
	add	$32, %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_0_gobble):
	lea	-48(%ecx), %ecx
	movdqa	(%esi), %xmm0
	xor	%eax, %eax
	pcmpeqb	(%edi), %xmm0
	sub	$32, %ecx
	movdqa	16(%esi), %xmm2
	pcmpeqb	16(%edi), %xmm2
L(shr_0_gobble_loop):
	pand	%xmm0, %xmm2
	sub	$32, %ecx
	pmovmskb %xmm2, %edx
	movdqa	%xmm0, %xmm1
	movdqa	32(%esi), %xmm0
	movdqa	48(%esi), %xmm2
	sbb	$0xffff, %edx
	pcmpeqb	32(%edi), %xmm0
	pcmpeqb	48(%edi), %xmm2
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	jz	L(shr_0_gobble_loop)

	pand	%xmm0, %xmm2
	cmp	$0, %ecx
	jge	L(shr_0_gobble_loop_next)
	inc	%edx
	add	$32, %ecx
L(shr_0_gobble_loop_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm2, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_1):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_1_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$1,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$1,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	1(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_1_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$1,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$1,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_1_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$1,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$1,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_1_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_1_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_1_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	1(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_2):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_2_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$2,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$2,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	2(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_2_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$2,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$2,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_2_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$2,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$2,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_2_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_2_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_2_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	2(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_3):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_3_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$3,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$3,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	3(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_3_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$3,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$3,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_3_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$3,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$3,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_3_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_3_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_3_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	3(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_4):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_4_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$4,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$4,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	4(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_4_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$4,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$4,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_4_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$4,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$4,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_4_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_4_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_4_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	4(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_5):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_5_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$5,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$5,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	5(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_5_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$5,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$5,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_5_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$5,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$5,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_5_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_5_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_5_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	5(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_6):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_6_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$6,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$6,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	6(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_6_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$6,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$6,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_6_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$6,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$6,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_6_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_6_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_6_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	6(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_7):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_7_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$7,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$7,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	7(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_7_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$7,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$7,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_7_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$7,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$7,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_7_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_7_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_7_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	7(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_8):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_8_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$8,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$8,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	8(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_8_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$8,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$8,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_8_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$8,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$8,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_8_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_8_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_8_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	8(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_9):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_9_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$9,(%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$9,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	9(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_9_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$9,(%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$9,16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_9_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$9,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$9,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_9_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_9_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_9_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	9(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_10):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_10_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$10, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$10,%xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	10(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_10_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$10, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$10, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_10_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$10,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$10,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_10_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_10_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_10_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	10(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_11):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_11_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$11, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$11, %xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	11(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_11_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$11, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$11, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_11_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$11,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$11,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_11_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_11_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_11_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	11(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_12):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_12_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$12, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$12, %xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	12(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_12_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$12, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$12, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_12_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$12,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$12,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_12_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_12_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_12_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	12(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_13):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_13_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$13, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$13, %xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	13(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_13_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$13, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$13, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_13_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$13,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$13,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_13_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_13_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_13_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	13(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_14):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_14_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$14, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$14, %xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	14(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_14_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$14, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$14, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_14_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$14,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$14,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_14_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_14_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_14_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	14(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_15):
	cmp	$80, %ecx
	lea	-48(%ecx), %ecx
	mov	%edx, %eax
	jae	L(shr_15_gobble)

	movdqa	16(%esi), %xmm1
	movdqa	%xmm1, %xmm2
	palignr	$15, (%esi), %xmm1
	pcmpeqb	(%edi), %xmm1

	movdqa	32(%esi), %xmm3
	palignr	$15, %xmm2, %xmm3
	pcmpeqb	16(%edi), %xmm3

	pand	%xmm1, %xmm3
	pmovmskb %xmm3, %edx
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)
	lea	(%ecx, %edi,1), %eax
	lea	15(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(shr_15_gobble):
	sub	$32, %ecx
	movdqa	16(%esi), %xmm0
	palignr	$15, (%esi), %xmm0
	pcmpeqb	(%edi), %xmm0

	movdqa	32(%esi), %xmm3
	palignr	$15, 16(%esi), %xmm3
	pcmpeqb	16(%edi), %xmm3

L(shr_15_gobble_loop):
	pand	%xmm0, %xmm3
	sub	$32, %ecx
	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1

	movdqa	64(%esi), %xmm3
	palignr	$15,48(%esi), %xmm3
	sbb	$0xffff, %edx
	movdqa	48(%esi), %xmm0
	palignr	$15,32(%esi), %xmm0
	pcmpeqb	32(%edi), %xmm0
	lea	32(%esi), %esi
	pcmpeqb	48(%edi), %xmm3

	lea	32(%edi), %edi
	jz	L(shr_15_gobble_loop)
	pand	%xmm0, %xmm3

	cmp	$0, %ecx
	jge	L(shr_15_gobble_next)
	inc	%edx
	add	$32, %ecx
L(shr_15_gobble_next):
	test	%edx, %edx
	jnz	L(exit)

	pmovmskb %xmm3, %edx
	movdqa	%xmm0, %xmm1
	lea	32(%edi), %edi
	lea	32(%esi), %esi
	sub	$0xffff, %edx
	jnz	L(exit)

	lea	(%ecx, %edi,1), %eax
	lea	15(%ecx, %esi,1), %edx
	POP (%edi)
	POP (%esi)
	jmp	L(less48bytes)

	cfi_restore_state
	cfi_remember_state
	ALIGN (4)
L(exit):
	pmovmskb %xmm1, %ebx
	sub	$0xffff, %ebx
	jz	L(first16bytes)
	lea	-16(%esi), %esi
	lea	-16(%edi), %edi
	mov	%ebx, %edx
L(first16bytes):
	add	%eax, %esi
L(less16bytes):
	test	%dl, %dl
	jz	L(next_24_bytes)

	test	$0x01, %dl
	jnz	L(Byte16)

	test	$0x02, %dl
	jnz	L(Byte17)

	test	$0x04, %dl
	jnz	L(Byte18)

	test	$0x08, %dl
	jnz	L(Byte19)

	test	$0x10, %dl
	jnz	L(Byte20)

	test	$0x20, %dl
	jnz	L(Byte21)

	test	$0x40, %dl
	jnz	L(Byte22)
L(Byte23):
	movzbl	 -9(%edi), %eax
	movzbl	 -9(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte16):
	movzbl	 -16(%edi), %eax
	movzbl	 -16(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte17):
	movzbl	 -15(%edi), %eax
	movzbl	 -15(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte18):
	movzbl	 -14(%edi), %eax
	movzbl	 -14(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte19):
	movzbl	 -13(%edi), %eax
	movzbl	 -13(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte20):
	movzbl	 -12(%edi), %eax
	movzbl	 -12(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte21):
	movzbl	 -11(%edi), %eax
	movzbl	 -11(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(Byte22):
	movzbl	 -10(%edi), %eax
	movzbl	 -10(%esi), %edx
	sub	%edx, %eax
	RETURN

	ALIGN (4)
L(next_24_bytes):
	lea	8(%edi), %edi
	lea	8(%esi), %esi
	test	$0x01, %dh
	jnz	L(Byte16)

	test	$0x02, %dh
	jnz	L(Byte17)

	test	$0x04, %dh
	jnz	L(Byte18)

	test	$0x08, %dh
	jnz	L(Byte19)

	test	$0x10, %dh
	jnz	L(Byte20)

	test	$0x20, %dh
	jnz	L(Byte21)

	test	$0x40, %dh
	jnz	L(Byte22)

	ALIGN (4)
L(Byte31):
	movzbl	 -9(%edi), %eax
	movzbl	 -9(%esi), %edx
	sub	%edx, %eax
	RETURN_END
	CFI_PUSH (%ebx)

	ALIGN (4)
L(more8bytes):
	cmp	$16, %ecx
	jae	L(more16bytes)
	cmp	$8, %ecx
	je	L(8bytes)
	cmp	$9, %ecx
	je	L(9bytes)
	cmp	$10, %ecx
	je	L(10bytes)
	cmp	$11, %ecx
	je	L(11bytes)
	cmp	$12, %ecx
	je	L(12bytes)
	cmp	$13, %ecx
	je	L(13bytes)
	cmp	$14, %ecx
	je	L(14bytes)
	jmp	L(15bytes)

	ALIGN (4)
L(more16bytes):
	cmp	$24, %ecx
	jae	L(more24bytes)
	cmp	$16, %ecx
	je	L(16bytes)
	cmp	$17, %ecx
	je	L(17bytes)
	cmp	$18, %ecx
	je	L(18bytes)
	cmp	$19, %ecx
	je	L(19bytes)
	cmp	$20, %ecx
	je	L(20bytes)
	cmp	$21, %ecx
	je	L(21bytes)
	cmp	$22, %ecx
	je	L(22bytes)
	jmp	L(23bytes)

	ALIGN (4)
L(more24bytes):
	cmp	$32, %ecx
	jae	L(more32bytes)
	cmp	$24, %ecx
	je	L(24bytes)
	cmp	$25, %ecx
	je	L(25bytes)
	cmp	$26, %ecx
	je	L(26bytes)
	cmp	$27, %ecx
	je	L(27bytes)
	cmp	$28, %ecx
	je	L(28bytes)
	cmp	$29, %ecx
	je	L(29bytes)
	cmp	$30, %ecx
	je	L(30bytes)
	jmp	L(31bytes)

	ALIGN (4)
L(more32bytes):
	cmp	$40, %ecx
	jae	L(more40bytes)
	cmp	$32, %ecx
	je	L(32bytes)
	cmp	$33, %ecx
	je	L(33bytes)
	cmp	$34, %ecx
	je	L(34bytes)
	cmp	$35, %ecx
	je	L(35bytes)
	cmp	$36, %ecx
	je	L(36bytes)
	cmp	$37, %ecx
	je	L(37bytes)
	cmp	$38, %ecx
	je	L(38bytes)
	jmp	L(39bytes)

	ALIGN (4)
L(more40bytes):
	cmp	$40, %ecx
	je	L(40bytes)
	cmp	$41, %ecx
	je	L(41bytes)
	cmp	$42, %ecx
	je	L(42bytes)
	cmp	$43, %ecx
	je	L(43bytes)
	cmp	$44, %ecx
	je	L(44bytes)
	cmp	$45, %ecx
	je	L(45bytes)
	cmp	$46, %ecx
	je	L(46bytes)
	jmp	L(47bytes)

	ALIGN (4)
L(less48bytes):
	cmp	$8, %ecx
	jae	L(more8bytes)
	cmp	$2, %ecx
	je	L(2bytes)
	cmp	$3, %ecx
	je	L(3bytes)
	cmp	$4, %ecx
	je	L(4bytes)
	cmp	$5, %ecx
	je	L(5bytes)
	cmp	$6, %ecx
	je	L(6bytes)
	jmp	L(7bytes)


	ALIGN (4)
L(44bytes):
	mov	-44(%eax), %ecx
	mov	-44(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(40bytes):
	mov	-40(%eax), %ecx
	mov	-40(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(36bytes):
	mov	-36(%eax), %ecx
	mov	-36(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(32bytes):
	mov	-32(%eax), %ecx
	mov	-32(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(28bytes):
	mov	-28(%eax), %ecx
	mov	-28(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(24bytes):
	mov	-24(%eax), %ecx
	mov	-24(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(20bytes):
	mov	-20(%eax), %ecx
	mov	-20(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(16bytes):
	mov	-16(%eax), %ecx
	mov	-16(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(12bytes):
	mov	-12(%eax), %ecx
	mov	-12(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(8bytes):
	mov	-8(%eax), %ecx
	mov	-8(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(4bytes):
	mov	-4(%eax), %ecx
	mov	-4(%edx), %ebx
	cmp	%ebx, %ecx
	mov	$0, %eax
	jne	L(find_diff)
	POP (%ebx)
	ret
	CFI_PUSH (%ebx)

	ALIGN (4)
L(45bytes):
	mov	-45(%eax), %ecx
	mov	-45(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(41bytes):
	mov	-41(%eax), %ecx
	mov	-41(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(37bytes):
	mov	-37(%eax), %ecx
	mov	-37(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(33bytes):
	mov	-33(%eax), %ecx
	mov	-33(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(29bytes):
	mov	-29(%eax), %ecx
	mov	-29(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(25bytes):
	mov	-25(%eax), %ecx
	mov	-25(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(21bytes):
	mov	-21(%eax), %ecx
	mov	-21(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(17bytes):
	mov	-17(%eax), %ecx
	mov	-17(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(13bytes):
	mov	-13(%eax), %ecx
	mov	-13(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(9bytes):
	mov	-9(%eax), %ecx
	mov	-9(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(5bytes):
	mov	-5(%eax), %ecx
	mov	-5(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
	movzbl	-1(%eax), %ecx
	cmp	-1(%edx), %cl
	mov	$0, %eax
	jne	L(end)
	POP (%ebx)
	ret
	CFI_PUSH (%ebx)

	ALIGN (4)
L(46bytes):
	mov	-46(%eax), %ecx
	mov	-46(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(42bytes):
	mov	-42(%eax), %ecx
	mov	-42(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(38bytes):
	mov	-38(%eax), %ecx
	mov	-38(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(34bytes):
	mov	-34(%eax), %ecx
	mov	-34(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(30bytes):
	mov	-30(%eax), %ecx
	mov	-30(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(26bytes):
	mov	-26(%eax), %ecx
	mov	-26(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(22bytes):
	mov	-22(%eax), %ecx
	mov	-22(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(18bytes):
	mov	-18(%eax), %ecx
	mov	-18(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(14bytes):
	mov	-14(%eax), %ecx
	mov	-14(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(10bytes):
	mov	-10(%eax), %ecx
	mov	-10(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(6bytes):
	mov	-6(%eax), %ecx
	mov	-6(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(2bytes):
	movzwl	-2(%eax), %ecx
	movzwl	-2(%edx), %ebx
	cmp	%bl, %cl
	jne	L(end)
	cmp	%bh, %ch
	mov	$0, %eax
	jne	L(end)
	POP (%ebx)
	ret
	CFI_PUSH (%ebx)

	ALIGN (4)
L(47bytes):
	movl	-47(%eax), %ecx
	movl	-47(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(43bytes):
	movl	-43(%eax), %ecx
	movl	-43(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(39bytes):
	movl	-39(%eax), %ecx
	movl	-39(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(35bytes):
	movl	-35(%eax), %ecx
	movl	-35(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(31bytes):
	movl	-31(%eax), %ecx
	movl	-31(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(27bytes):
	movl	-27(%eax), %ecx
	movl	-27(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(23bytes):
	movl	-23(%eax), %ecx
	movl	-23(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(19bytes):
	movl	-19(%eax), %ecx
	movl	-19(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(15bytes):
	movl	-15(%eax), %ecx
	movl	-15(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(11bytes):
	movl	-11(%eax), %ecx
	movl	-11(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(7bytes):
	movl	-7(%eax), %ecx
	movl	-7(%edx), %ebx
	cmp	%ebx, %ecx
	jne	L(find_diff)
L(3bytes):
	movzwl	-3(%eax), %ecx
	movzwl	-3(%edx), %ebx
	cmpb	%bl, %cl
	jne	L(end)
	cmp	%bx, %cx
	jne	L(end)
	movzbl	-1(%eax), %eax
	cmpb	-1(%edx), %al
	mov	$0, %eax
	jne	L(end)
	POP (%ebx)
	ret
	CFI_PUSH (%ebx)

	ALIGN (4)
L(find_diff):
	cmpb	%bl, %cl
	jne	L(end)
	cmp	%bx, %cx
	jne	L(end)
	shr	$16,%ecx
	shr	$16,%ebx
	cmp	%bl, %cl
	jne	L(end)
	cmp	%bx, %cx
L(end):
	POP (%ebx)
	mov	$1, %eax
	ja	L(bigger)
	neg	%eax
L(bigger):
	ret

END (MEMCMP)