/* CPU specific memcmp implementations.  31/64 bit S/390 version.

   Copyright (C) 2012-2018 Free Software Foundation, Inc.

   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/>.  */

#include "sysdep.h"

#include "asm-syntax.h"

/* INPUT PARAMETERS

     %r2 = address of first memory area

     %r3 = address of second memory area

     %r4 = number of bytes to compare.  */

       .text

#if IS_IN (libc)

ENTRY(__memcmp_z196)

	.machine "z196"

	.machinemode "zarch_nohighgprs"

# if !defined __s390x__

	llgfr	%r4,%r4

# endif /* !defined __s390x__  */

	ltgr    %r4,%r4

	je      .L_Z196_4

	aghi    %r4,-1

	srlg    %r1,%r4,8

	ltgr    %r1,%r1

	jne     .L_Z196_2

.L_Z196_3:

	exrl    %r4,.L_Z196_14

.L_Z196_4:

	ipm     %r2

	sllg    %r2,%r2,34

	srag    %r2,%r2,62

	br      %r14

.L_Z196_17:

	la      %r3,256(%r3)

	la      %r2,256(%r2)

	aghi    %r1,-1

	je      .L_Z196_3

.L_Z196_2:

	pfd     1,512(%r3)

	pfd     1,512(%r2)

	clc     0(256,%r3),0(%r2)

	je      .L_Z196_17

	ipm     %r2

	sllg    %r2,%r2,34

	srag    %r2,%r2,62

	br      %r14

.L_Z196_14:

	clc     0(1,%r3),0(%r2)

END(__memcmp_z196)

ENTRY(__memcmp_z10)

	.machine "z10"

	.machinemode "zarch_nohighgprs"

# if !defined __s390x__

	llgfr	%r4,%r4

# endif /* !defined __s390x__  */

	ltgr    %r4,%r4

	je      .L_Z10_4

	aghi    %r4,-1

	srlg    %r1,%r4,8

	cgijlh  %r1,0,.L_Z10_12

.L_Z10_3:

	exrl    %r4,.L_Z10_15

.L_Z10_4:

	ipm     %r2

	sllg    %r2,%r2,34

	srag    %r2,%r2,62

	br      %r14

.L_Z10_12:

	pfd     1,512(%r3)

	pfd     1,512(%r2)

	clc     0(256,%r3),0(%r2)

	jne     .L_Z10_4

	la      %r3,256(%r3)

	la      %r2,256(%r2)

	brctg   %r1,.L_Z10_12

	j       .L_Z10_3

.L_Z10_15:

	clc     0(1,%r3),0(%r2)

END(__memcmp_z10)

#endif /* IS_IN (libc) */

#include "../memcmp.S"

#if !IS_IN (libc)

.globl   memcmp

.set     memcmp,__memcmp_default

.weak    bcmp

.set	 bcmp,__memcmp_default

#elif defined SHARED && IS_IN (libc)

.globl   __GI_memcmp

.set     __GI_memcmp,__memcmp_default

#endif