--- /dev/null
+--- mozilla/nsprpub/pr/include/md/_linux.cfg.orig 2008-01-09 15:24:27.000000000 +0000
++++ mozilla/nsprpub/pr/include/md/_linux.cfg 2008-01-09 15:24:45.000000000 +0000
+@@ -322,6 +322,51 @@
+ #define PR_BYTES_PER_WORD_LOG2 2
+ #define PR_BYTES_PER_DWORD_LOG2 3
+
++#elif (defined(__sparc__) && defined(__arch64__))
++
++#undef IS_LITTLE_ENDIAN
++#define IS_BIG_ENDIAN 1
++
++#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 8
++#define PR_BYTES_PER_FLOAT 4
++#define PR_BYTES_PER_DOUBLE 8
++#define PR_BYTES_PER_WORD 8
++#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 64
++#define PR_BITS_PER_FLOAT 32
++#define PR_BITS_PER_DOUBLE 64
++#define PR_BITS_PER_WORD 64
++
++#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 6
++#define PR_BITS_PER_FLOAT_LOG2 5
++#define PR_BITS_PER_DOUBLE_LOG2 6
++#define PR_BITS_PER_WORD_LOG2 6
++
++#define PR_ALIGN_OF_SHORT 2
++#define PR_ALIGN_OF_INT 4
++#define PR_ALIGN_OF_LONG 8
++#define PR_ALIGN_OF_INT64 8
++#define PR_ALIGN_OF_FLOAT 4
++#define PR_ALIGN_OF_DOUBLE 8
++#define PR_ALIGN_OF_POINTER 8
++#define PR_ALIGN_OF_WORD 8
++
++#define PR_BYTES_PER_WORD_LOG2 3
++#define PR_BYTES_PER_DWORD_LOG2 3
++
+ #elif defined(__sparc__)
+
+ #undef IS_LITTLE_ENDIAN