Added AVR32 support to uClibc. Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/avr32/bits/byteswap.h b/libc/sysdeps/linux/avr32/bits/byteswap.h
new file mode 100644
index 000000000..59e96320f
--- /dev/null
+++ b/libc/sysdeps/linux/avr32/bits/byteswap.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2005 Atmel Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License.  See the file "COPYING.LIB" in the main directory of this
+ * archive for more details.
+ */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H 1
+
+/* Swap bytes in 16 bit value.  */
+#if defined __GNUC__
+# define __bswap_16(x) (__extension__ __builtin_bswap_16(x))
+#else
+/* This is better than nothing.  */
+static __inline unsigned short int
+__bswap_16 (unsigned short int __bsx)
+{
+       return ((((__bsx) >> 8) & 0xff) | (((__bsx) & 0xff) << 8));
+}
+#endif
+
+/* Swap bytes in 32 bit value.  */
+#if defined __GNUC__
+# define __bswap_32(x) (__extension__ __builtin_bswap_32(x))
+#else
+static __inline unsigned int
+__bswap_32 (unsigned int __bsx)
+{
+  return ((((__bsx) & 0xff000000) >> 24) | (((__bsx) & 0x00ff0000) >>  8) |
+         (((__bsx) & 0x0000ff00) <<  8) | (((__bsx) & 0x000000ff) << 24));
+}
+#endif
+
+#if defined __GNUC__
+/* Swap bytes in 64 bit value.  */
+# define __bswap_constant_64(x)                                \
+       ((((x) & 0xff00000000000000ull) >> 56)          \
+        | (((x) & 0x00ff000000000000ull) >> 40)        \
+        | (((x) & 0x0000ff0000000000ull) >> 24)        \
+        | (((x) & 0x000000ff00000000ull) >> 8)         \
+        | (((x) & 0x00000000ff000000ull) << 8)         \
+        | (((x) & 0x0000000000ff0000ull) << 24)        \
+        | (((x) & 0x000000000000ff00ull) << 40)        \
+        | (((x) & 0x00000000000000ffull) << 56))
+
+# define __bswap_64(x)                                                 \
+       (__extension__                                                  \
+        ({                                                             \
+                union {                                                \
+                        __extension__ unsigned long long int __ll;     \
+                        unsigned int __l[2];                           \
+                } __w, __r;                                            \
+                if (__builtin_constant_p(x))                           \
+                        __r.__ll = __bswap_constant_64(x);             \
+                else {                                                 \
+                        __w.__ll = (x);                                \
+                        __r.__l[0] = __bswap_32(__w.__l[1]);           \
+                        __r.__l[1] = __bswap_32(__w.__l[0]);           \
+                }                                                      \
+                __r.__ll;                                              \
+        }))
+#endif
+
+#endif /* _BITS_BYTESWAP_H */