diff options
Diffstat (limited to 'archival')
| -rw-r--r-- | archival/gzip.c | 16 | ||||
| -rw-r--r-- | archival/libunarchive/decompress_unxz.c | 14 | ||||
| -rw-r--r-- | archival/libunarchive/decompress_unzip.c | 5 | ||||
| -rw-r--r-- | archival/lzop.c | 22 |
4 files changed, 15 insertions, 42 deletions
diff --git a/archival/gzip.c b/archival/gzip.c index 32528d9..4d39906 100644 --- a/archival/gzip.c +++ b/archival/gzip.c @@ -340,7 +340,7 @@ struct globals { ulg bits_sent; /* bit length of the compressed data */ #endif - uint32_t *crc_32_tab; + /*uint32_t *crc_32_tab;*/ uint32_t crc; /* shift register contents */ }; @@ -393,15 +393,9 @@ static void put_32bit(ulg n) * pointer, then initialize the crc shift register contents instead. * Return the current crc in either case. */ -static uint32_t updcrc(uch * s, unsigned n) +static void updcrc(uch * s, unsigned n) { - uint32_t c = G1.crc; - while (n) { - c = G1.crc_32_tab[(uch)(c ^ *s++)] ^ (c >> 8); - n--; - } - G1.crc = c; - return c; + G1.crc = crc32_block_endian0(G1.crc, s, n, global_crc32_table /*G1.crc_32_tab*/); } @@ -2104,8 +2098,8 @@ int gzip_main(int argc UNUSED_PARAM, char **argv) ALLOC(uch, G1.window, 2L * WSIZE); ALLOC(ush, G1.prev, 1L << BITS); - /* Initialise the CRC32 table */ - G1.crc_32_tab = crc32_filltable(NULL, 0); + /* Initialize the CRC32 table */ + global_crc32_table = crc32_filltable(NULL, 0); return bbunpack(argv, pack_gzip, append_ext, "gz"); } diff --git a/archival/libunarchive/decompress_unxz.c b/archival/libunarchive/decompress_unxz.c index faba9ca..ca42723 100644 --- a/archival/libunarchive/decompress_unxz.c +++ b/archival/libunarchive/decompress_unxz.c @@ -22,17 +22,9 @@ /* We use our own crc32 function */ #define XZ_INTERNAL_CRC32 0 -static uint32_t *crc32_table; static uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc) { - crc = ~crc; - - while (size != 0) { - crc = crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8); - --size; - } - - return ~crc; + return ~crc32_block_endian0(~crc, buf, size, global_crc32_table); } /* We use arch-optimized unaligned accessors */ @@ -53,8 +45,8 @@ unpack_xz_stream(int src_fd, int dst_fd) unsigned char *membuf; IF_DESKTOP(long long) int total = 0; - if (!crc32_table) - crc32_table = crc32_filltable(NULL, /*endian:*/ 0); + if (!global_crc32_table) + global_crc32_table = crc32_filltable(NULL, /*endian:*/ 0); memset(&iobuf, 0, sizeof(iobuf)); /* Preload XZ file signature */ diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c index 20fda9d..cb8a3d7 100644 --- a/archival/libunarchive/decompress_unzip.c +++ b/archival/libunarchive/decompress_unzip.c @@ -925,10 +925,7 @@ static int inflate_block(STATE_PARAM smallint *e) /* Two callsites, both in inflate_get_next_window */ static void calculate_gunzip_crc(STATE_PARAM_ONLY) { - unsigned n; - for (n = 0; n < gunzip_outbuf_count; n++) { - gunzip_crc = gunzip_crc_table[((int) gunzip_crc ^ (gunzip_window[n])) & 0xff] ^ (gunzip_crc >> 8); - } + gunzip_crc = crc32_block_endian0(gunzip_crc, gunzip_window, gunzip_outbuf_count, gunzip_crc_table); gunzip_bytes_out += gunzip_outbuf_count; } diff --git a/archival/lzop.c b/archival/lzop.c index c6e718a..acb34fe 100644 --- a/archival/lzop.c +++ b/archival/lzop.c @@ -393,7 +393,7 @@ typedef struct header_t { } header_t; struct globals { - const uint32_t *lzo_crc32_table; + /*const uint32_t *lzo_crc32_table;*/ chksum_t chksum_in; chksum_t chksum_out; } FIX_ALIASING; @@ -468,19 +468,10 @@ lzo_adler32(uint32_t adler, const uint8_t* buf, unsigned len) static FAST_FUNC uint32_t lzo_crc32(uint32_t c, const uint8_t* buf, unsigned len) { - uint32_t crc; + //if (buf == NULL) - impossible + // return 0; - if (buf == NULL) - return 0; - - crc = ~c; - if (len != 0) do { - crc = G.lzo_crc32_table[(uint8_t)((int)crc ^ *buf)] ^ (crc >> 8); - buf += 1; - len -= 1; - } while (len > 0); - - return ~crc; + return ~crc32_block_endian0(~c, buf, len, global_crc32_table); } /**********************************************************************/ @@ -679,8 +670,7 @@ static NOINLINE smallint lzo_compress(const header_t *h) if (dst_len < src_len) { /* write checksum of compressed block */ if (h->flags & F_ADLER32_C) - write32(lzo_adler32(ADLER32_INIT_VALUE, b2, - dst_len)); + write32(lzo_adler32(ADLER32_INIT_VALUE, b2, dst_len)); if (h->flags & F_CRC32_C) write32(lzo_crc32(CRC32_INIT_VALUE, b2, dst_len)); /* write compressed block data */ @@ -1080,6 +1070,6 @@ int lzop_main(int argc UNUSED_PARAM, char **argv) if (applet_name[0] == 'u') option_mask32 |= OPT_DECOMPRESS; - G.lzo_crc32_table = crc32_filltable(NULL, 0); + global_crc32_table = crc32_filltable(NULL, 0); return bbunpack(argv, pack_lzop, make_new_name_lzop, /*unused:*/ NULL); } |