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Add Nios-II support

[Gustavo: update for nspr 4.10.9]
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

diff -Nura nspr-4.10.9.orig/nspr/pr/include/md/_linux.cfg nspr-4.10.9/nspr/pr/include/md/_linux.cfg
--- nspr-4.10.9.orig/nspr/pr/include/md/_linux.cfg	2015-10-03 08:11:43.229387215 -0300
+++ nspr-4.10.9/nspr/pr/include/md/_linux.cfg	2015-10-03 08:11:55.277798841 -0300
@@ -1017,6 +1017,51 @@
 #define PR_BYTES_PER_WORD_LOG2   2
 #define PR_BYTES_PER_DWORD_LOG2  3
 
+#elif defined(nios2)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
 #else
 
 #error "Unknown CPU architecture"
diff -Nura nspr-4.10.9.orig/nspr/pr/include/md/_linux.h nspr-4.10.9/nspr/pr/include/md/_linux.h
--- nspr-4.10.9.orig/nspr/pr/include/md/_linux.h	2015-10-03 08:11:43.229387215 -0300
+++ nspr-4.10.9/nspr/pr/include/md/_linux.h	2015-10-03 08:12:22.474728003 -0300
@@ -57,6 +57,8 @@
 #define _PR_SI_ARCHITECTURE "m32r"
 #elif defined(__or1k__)
 #define _PR_SI_ARCHITECTURE "or1k"
+#elif defined(nios2)
+#define _PR_SI_ARCHITECTURE "nios2"
 #else
 #error "Unknown CPU architecture"
 #endif