1 /* 2 * Copyright (C) 2011 Andes Technology Corporation 3 * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) 4 * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) 5 * Copyright (C) 2017 Rick Chen (rick@andestech.com) 6 * 7 * This file is subject to the terms and conditions of the GNU General Public 8 * License. See the file "COPYING" in the main directory of this archive 9 * for more details. 10 */ 11 12 #ifndef __ASM_RISCV_STRING_H 13 #define __ASM_RISCV_STRING_H 14 15 /* 16 * We don't do inline string functions, since the 17 * optimised inline asm versions are not small. 18 */ 19 20 #undef __HAVE_ARCH_STRRCHR 21 #undef __HAVE_ARCH_STRCHR 22 #undef __HAVE_ARCH_MEMCPY 23 #undef __HAVE_ARCH_MEMMOVE 24 #undef __HAVE_ARCH_MEMCHR 25 #undef __HAVE_ARCH_MEMZERO 26 #undef __HAVE_ARCH_MEMSET 27 28 #ifdef CONFIG_MARCO_MEMSET 29 #define memset(_p, _v, _n) \ 30 (typeof(_p) (p) = (_p); \ 31 typeof(_v) (v) = (_v); \ 32 typeof(_n) (n) = (_n); \ 33 { \ 34 if ((n) != 0) { \ 35 if (__builtin_constant_p((v)) && (v) == 0) \ 36 __memzero((p), (n)); \ 37 else \ 38 memset((p), (v), (n)); \ 39 } \ 40 (p); \ 41 }) 42 43 #define memzero(_p, _n) \ 44 (typeof(_p) (p) = (_p); \ 45 typeof(_n) (n) = (_n); \ 46 { if ((n) != 0) __memzero((p), (n)); (p); }) 47 #endif 48 49 #endif /* __ASM_RISCV_STRING_H */ 50