Rebase from GCC

.pc/ffi_last_abi/ChangeLog

@@ -1,3 +1,17 @@
+2011-02-07  Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* libffi/src/m68k/ffi.c: Add RTEMS support for cache flushing.
+	Handle case when CPU variant does not have long double support.
+	* libffi/src/m68k/sysv.S: Add support for mc68000, Coldfire,
+	and cores with soft floating point.
+
+2011-02-07  Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* configure.ac: Add mips*-*-rtems* support.
+	* configure: Regenerate.
+	* src/mips/ffitarget.h: Ensure needed constants are available
+	for targets which do not have sgidefs.h.
+
 2011-01-26  Dave Korn  <dave.korn.cygwin@gmail.com>
 
 	PR target/40125

.pc/ffi_last_abi/src/mips/ffitarget.h

@@ -29,9 +29,17 @@
 
 #ifdef linux
 # include <asm/sgidefs.h>
+#elif defined(__rtems__)
+/*
+ * Subprogram calling convention - copied from sgidefs.h
+ */
+#define _MIPS_SIM_ABI32		1
+#define _MIPS_SIM_NABI32	2
+#define _MIPS_SIM_ABI64		3
 #else
 # include <sgidefs.h>
 #endif
+
 #  ifndef _ABIN32
 #    define _ABIN32 _MIPS_SIM_NABI32
 #  endif