| commit | 5bf6c07a1843813d0065feaaecba622d49148d7e | [log] [tgz] |
|---|---|---|
| author | Chris Metcalf <cmetcalf@ezchip.com> | Thu Apr 30 15:12:42 2015 -0400 |
| committer | Chris Metcalf <cmetcalf@ezchip.com> | Thu Apr 30 15:23:37 2015 -0400 |
| tree | 18118d48ffe123ce6f6d3eaa67dba135adafbc1a | |
| parent | 627ae54854edfbf29d5997015c190de22eef497f [diff] |
tile: add <asm/word-at-a-time.h> and enable support functions This change enables the generic strncpy_from_user() and strnlen_user() using word-at-a-time.h. The tile implementation is trivial since both tilepro and tilegx have SIMD operations that do byte-wise comparisons against immediate zero for each byte, and return an 0x01 byte in each position where there is a 0x00 byte. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>