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Diffstat (limited to 'arch/riscv/include/asm/string.h')
| -rw-r--r-- | arch/riscv/include/asm/string.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h new file mode 100644 index 0000000..0fc3424 --- /dev/null +++ b/arch/riscv/include/asm/string.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) + * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef __ASM_RISCV_STRING_H +#define __ASM_RISCV_STRING_H + +/* + * We don't do inline string functions, since the + * optimised inline asm versions are not small. + */ + +#undef __HAVE_ARCH_STRRCHR +#undef __HAVE_ARCH_STRCHR +#undef __HAVE_ARCH_MEMCPY +#undef __HAVE_ARCH_MEMMOVE +#undef __HAVE_ARCH_MEMCHR +#undef __HAVE_ARCH_MEMZERO +#undef __HAVE_ARCH_MEMSET + +#ifdef CONFIG_MARCO_MEMSET +#define memset(_p, _v, _n) \ + (typeof(_p) (p) = (_p); \ + typeof(_v) (v) = (_v); \ + typeof(_n) (n) = (_n); \ + { \ + if ((n) != 0) { \ + if (__builtin_constant_p((v)) && (v) == 0) \ + __memzero((p), (n)); \ + else \ + memset((p), (v), (n)); \ + } \ + (p); \ + }) + +#define memzero(_p, _n) \ + (typeof(_p) (p) = (_p); \ + typeof(_n) (n) = (_n); \ + { if ((n) != 0) __memzero((p), (n)); (p); }) +#endif + +#endif /* __ASM_RISCV_STRING_H */ |