1 /* 2 * Copyright (c) 2015 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 #include <picolibc.h> 30 31 #include <stddef.h> 32 #include <string.h> 33 34 /* According to the run-time ABI for the ARM Architecture, this 35 function is allowed to corrupt only the integer core register 36 permitted to be corrupted by the [AAPCS] (r0-r3, ip, lr, and 37 CPSR). 38 39 Therefore, we can't just simply use alias to support the function 40 aeabi_memset for the targets with FP register. Instead, versions 41 for these specific targets are written in assembler (in 42 aeabi_memset-soft.S). */ 43 44 /* NOTE: This ifdef MUST match the one in memset-soft.S. */ 45 #if __ARM_FP != 0 && !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__) 46 47 /* Defined in memset-soft.S. */ 48 49 #else 50 #include "../../string/memset.c" 51 #endif 52
