Changeset 2725 in MondoRescue for branches/2.2.9/mindi-busybox/libbb/crc32.c

Timestamp:

Feb 25, 2011, 9:26:54 PM (13 years ago)

Author:

Bruno Cornec

Message:

• Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3

File:

• branches/2.2.9/mindi-busybox/libbb/crc32.c (modified) (2 diffs)

branches/2.2.9/mindi-busybox/libbb/crc32.c

@@ -13 +13 @@
  * endian = 1: big-endian
  * endian = 0: little-endian
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
  */
 
 #include "libbb.h"
 
-uint32_t *crc32_filltable(uint32_t *crc_table, int endian)
+uint32_t *global_crc32_table;
+
+uint32_t* FAST_FUNC crc32_filltable(uint32_t *crc_table, int endian)
 {
     uint32_t polynomial = endian ? 0x04c11db7 : 0xedb88320;
@@ -39 +43 @@
     return crc_table - 256;
 }
+
+uint32_t FAST_FUNC crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table)
+{
+    const void *end = (uint8_t*)buf + len;
+
+    while (buf != end) {
+        val = (val << 8) ^ crc_table[(val >> 24) ^ *(uint8_t*)buf];
+        buf = (uint8_t*)buf + 1;
+    }
+    return val;
+}
+
+uint32_t FAST_FUNC crc32_block_endian0(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table)
+{
+    const void *end = (uint8_t*)buf + len;
+
+    while (buf != end) {
+                val = crc_table[(uint8_t)val ^ *(uint8_t*)buf] ^ (val >> 8);
+        buf = (uint8_t*)buf + 1;
+    }
+    return val;
+}