Patch for faster memcpy on MIPS

[Steve Ellcey]

Steven,

Could you test out this patch and see if it works for you.  I was able to
build with no problems.  I decided to try the minimal change needed and look
at doing some of the cleanup that Richard mentioned in a later patch.

Steve Ellcey
sellcey@mips.com



diff --git a/newlib/libc/machine/mips/memcpy.S b/newlib/libc/machine/mips/memcpy.S
index fe7cb15..8db8953 100644
--- a/newlib/libc/machine/mips/memcpy.S
+++ b/newlib/libc/machine/mips/memcpy.S
@@ -56,7 +56,7 @@
 #endif
 #endif
 
-#if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32)
+#if defined(_MIPS_SIM) && ((_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32))
 #ifndef DISABLE_DOUBLE
 #define USE_DOUBLE
 #endif
@@ -203,7 +203,7 @@
 #define REG1 t1
 #define REG2 t2
 #define REG3 t3
-#if _MIPS_SIM == _ABIO32
+#if defined(_MIPS_SIM) && (_MIPS_SIM == _ABIO32)
 #  define REG4 t4
 #  define REG5 t5
 #  define REG6 t6