1 /* 2 * Copyright (c) 2021 Chipsea Technologies (Shenzhen) Corp., Ltd. All rights reserved. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 /** 16 * Just to solve the '_sbrk' undefined issue. 17 */ 18 #include <sys/types.h> 19 20 extern int __HEAP_START; 21 _sbrk(int incr)22caddr_t _sbrk(int incr) { 23 static unsigned char *heap = NULL; 24 unsigned char *prev_heap; 25 26 if (heap == NULL) { 27 heap = (unsigned char*)&__HEAP_START; 28 } 29 30 prev_heap = heap; 31 32 heap += incr; 33 34 return (caddr_t)prev_heap; 35 } 36