| /* |
| * Copyright (c) 2012-2014 ARM Ltd |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. The name of the company may not be used to endorse or promote |
| * products derived from this software without specific prior written |
| * permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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. |
| */ |
| |
| /* Wrapper for the various implementations of strcmp. */ |
| |
| #include "arm_asm.h" |
| |
| #ifdef __ARM_BIG_ENDIAN |
| #define S2LO lsl |
| #define S2LOEQ lsleq |
| #define S2HI lsr |
| #define MSB 0x000000ff |
| #define LSB 0xff000000 |
| #define BYTE0_OFFSET 24 |
| #define BYTE1_OFFSET 16 |
| #define BYTE2_OFFSET 8 |
| #define BYTE3_OFFSET 0 |
| #else /* not __ARM_BIG_ENDIAN */ |
| #define S2LO lsr |
| #define S2LOEQ lsreq |
| #define S2HI lsl |
| #define BYTE0_OFFSET 0 |
| #define BYTE1_OFFSET 8 |
| #define BYTE2_OFFSET 16 |
| #define BYTE3_OFFSET 24 |
| #define MSB 0xff000000 |
| #define LSB 0x000000ff |
| #endif /* not __ARM_BIG_ENDIAN */ |
| |
| .macro def_fn f p2align=4 |
| .text |
| .p2align \p2align |
| .global \f |
| .type \f, %function |
| \f: |
| .endm |
| |
| #if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) \ |
| || (__ARM_ARCH == 6 && __ARM_ARCH_PROFILE == 'M') |
| |
| # if defined (__thumb__) && !defined (__thumb2__) |
| /* Thumb1 only variant. */ |
| # include "strcmp-armv4t.S" |
| # else |
| # include "strcmp-arm-tiny.S" |
| # endif |
| |
| #elif __ARM_ARCH >= 7 |
| |
| # if __ARM_ARCH_PROFILE != 'M' |
| # include "strcmp-armv7.S" |
| # else |
| # include "strcmp-armv7m.S" |
| # endif |
| |
| #elif __ARM_ARCH >= 6 |
| |
| # include "strcmp-armv6.S" |
| |
| #else |
| |
| # include "strcmp-armv4.S" |
| |
| #endif |
