1/*
2 * Copyright (c) 2012-2014 ARM Ltd
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the company may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/* Wrapper for the various implementations of strcmp.  */
30
31#include "machine/acle-compat.h"
32
33#ifdef __ARM_BIG_ENDIAN
34#define S2LO lsl
35#define S2LOEQ lsleq
36#define S2HI lsr
37#define MSB 0x000000ff
38#define LSB 0xff000000
39#define BYTE0_OFFSET 24
40#define BYTE1_OFFSET 16
41#define BYTE2_OFFSET 8
42#define BYTE3_OFFSET 0
43#else /* not  __ARM_BIG_ENDIAN */
44#define S2LO lsr
45#define S2LOEQ lsreq
46#define S2HI lsl
47#define BYTE0_OFFSET 0
48#define BYTE1_OFFSET 8
49#define BYTE2_OFFSET 16
50#define BYTE3_OFFSET 24
51#define MSB 0xff000000
52#define LSB 0x000000ff
53#endif /* not  __ARM_BIG_ENDIAN */
54
55	.macro def_fn f p2align=0
56	.text
57	.p2align \p2align
58	.global \f
59	.type \f, %function
60\f:
61	.endm
62
63#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) \
64	|| (__ARM_ARCH_ISA_THUMB == 1 && !__ARM_ARCH_ISA_ARM)
65
66# if defined (__thumb__) && !defined (__thumb2__)
67/* Thumb1 only variant.  If size is preferred, use strcmp-armv4t.S.
68   If speed is preferred, the strcmp function in strcmp-armv6m.S
69   will be used.  */
70
71#  if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
72#   include "strcmp-armv4t.S"
73#  else
74#   include "strcmp-armv6m.S"
75#  endif
76
77# else
78#  include "strcmp-arm-tiny.S"
79# endif
80
81#elif __ARM_ARCH_ISA_THUMB == 2
82
83# ifdef __ARM_FEATURE_SIMD32
84#  include "strcmp-armv7.S"
85# else
86#  include "strcmp-armv7m.S"
87# endif
88
89#elif __ARM_ARCH >= 6
90
91# include "strcmp-armv6.S"
92
93#else
94
95# include "strcmp-armv4.S"
96
97#endif
98