summaryrefslogtreecommitdiff
path: root/Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c')
-rw-r--r--Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c b/Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c
new file mode 100644
index 00000000000..bd1958483ff
--- /dev/null
+++ b/Build/source/libs/zziplib/zziplib-0.13.59/zzip/fetch.c
@@ -0,0 +1,126 @@
+
+/*
+ * These routines are helpers - note that this file gets linked into all the
+ * zip-access variants that refer to <zzip/format.h>. On the x86 platform the
+ * actual definitions will be empty - fetching is done on native machine-level
+ *
+ * Author:
+ * Guido Draheim <guidod@gmx.de>
+ *
+ * Copyright (c) 2004,2005,2006 Guido Draheim
+ * All rights reserved,
+ * use under the restrictions of the
+ * Lesser GNU General Public License
+ * or alternatively the restrictions
+ * of the Mozilla Public License 1.1
+ */
+
+#include <zzip/fetch.h>
+
+/* ------------------------- fetch helpers --------------------------------- */
+
+/**
+ * Make 32 bit value in host byteorder from little-endian mapped octet-data
+ * (works also on machines which SIGBUS on misaligned data access (eg. 68000))
+ */
+uint32_t
+__zzip_get32(unsigned char *s)
+{
+#if defined __ZZIP_GET32
+ return __ZZIP_GET32(s);
+#else
+ return ((uint32_t) s[3] << 24) | ((uint32_t) s[2] << 16)
+ | ((uint32_t) s[1] << 8) | ((uint32_t) s[0]);
+#endif
+}
+
+/** => __zzip_get32
+ * This function does the same for a 16 bit value.
+ */
+uint16_t
+__zzip_get16(unsigned char *s)
+{
+#if defined __ZZIP_GET16
+ return __ZZIP_GET16(s);
+#else
+ return ((uint16_t) s[1] << 8) | ((uint16_t) s[0]);
+#endif
+}
+
+/** => __zzip_get32
+ * This function does the same for an off64_t value.
+ */
+uint64_t
+__zzip_get64(unsigned char *s)
+{
+#ifdef __GNUC__
+ /* *INDENT-OFF* */
+ register uint64_t v
+ = s[7]; v <<= 8;
+ v |= s[6]; v <<= 8;
+ v |= s[5]; v <<= 8;
+ v |= s[4]; v <<= 8;
+ v |= s[3]; v <<= 8;
+ v |= s[2]; v <<= 8;
+ v |= s[1]; v <<= 8;
+ v |= s[0]; return v;
+ /* *INDENT-ON* */
+#else
+ return ((uint64_t) s[7] << 56) | ((uint64_t) s[6] << 48)
+ | ((uint64_t) s[5] << 40) | ((uint64_t) s[4] << 32)
+ | ((uint64_t) s[3] << 24) | ((uint64_t) s[2] << 16)
+ | ((uint64_t) s[1] << 8) | ((uint64_t) s[0]);
+#endif
+}
+
+/** => __zzip_get32
+ * This function pushes a 32bit value at the specified address
+ */
+void
+__zzip_set32(unsigned char *s, uint32_t v)
+{
+#if defined __ZZIP_SET32
+ return __ZZIP_SET32(s, v);
+#else
+ /* *INDENT-OFF* */
+ s[0] = (unsigned char) (v); v >>= 8;
+ s[1] = (unsigned char) (v); v >>= 8;
+ s[2] = (unsigned char) (v); v >>= 8;
+ s[3] = (unsigned char) (v);
+ /* *INDENT-ON* */
+#endif
+}
+
+/** => __zzip_get32
+ * This function does the same for a 16 bit value.
+ */
+void
+__zzip_set16(unsigned char *s, uint16_t v)
+{
+#if defined __ZZIP_SET16
+ return __ZZIP_SET16(s, v);
+#else
+ /* *INDENT-OFF* */
+ s[0] = (unsigned char) (v); v >>= 8;
+ s[1] = (unsigned char) (v);
+ /* *INDENT-ON* */
+#endif
+}
+
+/** => __zzip_get32
+ * This function pushes a off64_t value at the specified address
+ */
+void
+__zzip_set64(unsigned char *s, uint64_t v)
+{
+ /* *INDENT-OFF* */
+ s[0] = (unsigned char) (v); v >>= 8;
+ s[1] = (unsigned char) (v); v >>= 8;
+ s[2] = (unsigned char) (v); v >>= 8;
+ s[3] = (unsigned char) (v); v >>= 8;
+ s[4] = (unsigned char) (v); v >>= 8;
+ s[5] = (unsigned char) (v); v >>= 8;
+ s[6] = (unsigned char) (v); v >>= 8;
+ s[7] = (unsigned char) (v);
+ /* *INDENT-ON* */
+}