diff options
Diffstat (limited to 'src/include/util/align.H')
| -rw-r--r-- | src/include/util/align.H | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/include/util/align.H b/src/include/util/align.H index 55073256d..8ba0e06b9 100644 --- a/src/include/util/align.H +++ b/src/include/util/align.H @@ -25,14 +25,20 @@ #include <limits.h> -// Return a number >= input that is aligned on a 4-byte boundary -#define ALIGN_4(u) ((u + 0x3ull) & ~0x3ull) +// Return a number >= input that is aligned up to the next 4-byte boundary +#define ALIGN_4(u) (((u) + 0x3ull) & ~0x3ull) -// Return a number >= input that is aligned on a 8-byte bounday -#define ALIGN_8(u) ((u + 0x7ull) & ~0x7ull) +// Return a number <= input that is rounded down to nearest 4-byte boundary +#define ALIGN_DOWN_4(u) ((u) & ~3ull) -// Return a number >= input that is aligned on a page boundary -#define ALIGN_PAGE(u) ((u + (PAGESIZE-1)) & ~(PAGESIZE-1)) +// Return a number >= input that is aligned up to the next 8-byte bounday +#define ALIGN_8(u) (((u) + 0x7ull) & ~0x7ull) + +// Return a number <= input that is rounded down to nearest 8-byte boundary +#define ALIGN_DOWN_8(u) ((u) & ~7ull) + +// Return a number >= input that is aligned up to the next page boundary +#define ALIGN_PAGE(u) (((u) + (PAGESIZE-1)) & ~(PAGESIZE-1)) // Return a number <= input that is aligned on a page boundary #define ALIGN_PAGE_DOWN(u) ((u) - (u)%PAGESIZE) |
