diff options
Diffstat (limited to 'libc/sysdeps/linux/nds32/bits/uClibc_page.h')
-rw-r--r-- | libc/sysdeps/linux/nds32/bits/uClibc_page.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/bits/uClibc_page.h b/libc/sysdeps/linux/nds32/bits/uClibc_page.h new file mode 100644 index 000000000..0438493db --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/uClibc_page.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _UCLIBC_PAGE_H +#define _UCLIBC_PAGE_H + +/* + * Linux/NDS32 supports 4k and 8k pages (build time). + * + * Although uClibc determines page size dynamically from kernel's auxv + * still the generic code needs a fall back + * _dl_pagesize = auxvt[AT_PAGESZ].a_un.a_val ? : PAGE_SIZE + */ + +#include <features.h> + +#if defined(__CONFIG_NDS32_PAGE_SIZE_8K__) +#define PAGE_SHIFT 13 +#else +#define PAGE_SHIFT 12 +#endif + +#define PAGE_SIZE (1UL << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +/* TBD: fix this with runtime value for a PAGE_SIZE agnostic uClibc */ +#define MMAP2_PAGE_SHIFT PAGE_SHIFT + +#endif /* _UCLIBC_PAGE_H */ |