[444] | 1 | /* |
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| 2 | * Copyright (c) 2012-2014 ARM Ltd |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. The name of the company may not be used to endorse or promote |
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| 14 | * products derived from this software without specific prior written |
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| 15 | * permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 21 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 22 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 23 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 24 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 25 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 26 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |
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| 29 | /* Wrapper for the various implementations of strcmp. */ |
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| 30 | |
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| 31 | #include "acle-compat.h" |
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| 32 | |
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| 33 | #ifdef __ARM_BIG_ENDIAN |
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| 34 | #define S2LO lsl |
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| 35 | #define S2LOEQ lsleq |
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| 36 | #define S2HI lsr |
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| 37 | #define MSB 0x000000ff |
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| 38 | #define LSB 0xff000000 |
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| 39 | #define BYTE0_OFFSET 24 |
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| 40 | #define BYTE1_OFFSET 16 |
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| 41 | #define BYTE2_OFFSET 8 |
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| 42 | #define BYTE3_OFFSET 0 |
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| 43 | #else /* not __ARM_BIG_ENDIAN */ |
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| 44 | #define S2LO lsr |
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| 45 | #define S2LOEQ lsreq |
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| 46 | #define S2HI lsl |
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| 47 | #define BYTE0_OFFSET 0 |
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| 48 | #define BYTE1_OFFSET 8 |
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| 49 | #define BYTE2_OFFSET 16 |
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| 50 | #define BYTE3_OFFSET 24 |
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| 51 | #define MSB 0xff000000 |
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| 52 | #define LSB 0x000000ff |
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| 53 | #endif /* not __ARM_BIG_ENDIAN */ |
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| 54 | |
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| 55 | .macro def_fn f p2align=0 |
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| 56 | .text |
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| 57 | .p2align \p2align |
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| 58 | .global \f |
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| 59 | .type \f, %function |
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| 60 | \f: |
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| 61 | .endm |
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| 62 | |
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| 63 | #if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) \ |
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| 64 | || (__ARM_ARCH_ISA_THUMB == 1 && !__ARM_ARCH_ISA_ARM) |
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| 65 | |
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| 66 | # if defined (__thumb__) && !defined (__thumb2__) |
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| 67 | /* Thumb1 only variant. If size is preferred, use strcmp-armv4t.S. |
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| 68 | If speed is preferred, the strcmp function in strcmp-armv6m.S |
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| 69 | will be used. */ |
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| 70 | |
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| 71 | # if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) |
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| 72 | # include "strcmp-armv4t.S" |
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| 73 | # else |
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| 74 | # include "strcmp-armv6m.S" |
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| 75 | # endif |
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| 76 | |
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| 77 | # else |
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| 78 | # include "strcmp-arm-tiny.S" |
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| 79 | # endif |
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| 80 | |
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| 81 | #elif __ARM_ARCH_ISA_THUMB == 2 |
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| 82 | |
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| 83 | # ifdef __ARM_FEATURE_SIMD32 |
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| 84 | # include "strcmp-armv7.S" |
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| 85 | # else |
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| 86 | # include "strcmp-armv7m.S" |
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| 87 | # endif |
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| 88 | |
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| 89 | #elif __ARM_ARCH >= 6 |
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| 90 | |
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| 91 | # include "strcmp-armv6.S" |
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| 92 | |
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| 93 | #else |
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| 94 | |
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| 95 | # include "strcmp-armv4.S" |
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| 96 | |
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| 97 | #endif |
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