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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2018-02-01 10:56:19 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-02-01 10:56:19 +0100 |
| commit | ddacb03e875dd4c1a79421d030da9cdc4f081e6e (patch) | |
| tree | 5fef3dda6eb881153d8acef87a297fc75223398e /libbb/crc32.c | |
| parent | 06076494da41755893a6e072bbd9889581a9e9d1 (diff) | |
| download | busybox-ddacb03e875dd4c1a79421d030da9cdc4f081e6e.tar.gz | |
libbb: commonalize a bit of little-endian CRC32 table generation code
function old new delta
global_crc32_new_table_le - 11 +11
crc32_new_table_le - 9 +9
inflate_unzip_internal 560 556 -4
flash_eraseall_main 823 819 -4
unpack_xz_stream 2403 2394 -9
lzop_main 121 112 -9
gzip_main 187 178 -9
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/5 up/down: 20/-35) Total: -15 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/crc32.c')
| -rw-r--r-- | libbb/crc32.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libbb/crc32.c b/libbb/crc32.c index b00b580d0..728bcb736 100644 --- a/libbb/crc32.c +++ b/libbb/crc32.c @@ -41,6 +41,16 @@ uint32_t* FAST_FUNC crc32_filltable(uint32_t *crc_table, int endian) return crc_table - 256; } +/* Common uses: */ +uint32_t* FAST_FUNC crc32_new_table_le(void) +{ + return crc32_filltable(NULL, 0); +} +uint32_t* FAST_FUNC global_crc32_new_table_le(void) +{ + global_crc32_table = crc32_new_table_le(); + return global_crc32_table; +} uint32_t FAST_FUNC crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) { |