| 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 "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 |
|---|
