AArch64: Define FP_TRAPPING_EXCEPTIONS.

2012-12-04  Marcus Shawcroft <marcus.shawcroft@arm.com>

        * config/aarch64/sfp-machine.h (FP_EX_ALL): Define.
	(FP_EX_SHIFT): Define.
	(FP_TRAPPING_EXCEPTIONS): Define.

From-SVN: r194151

libgcc/ChangeLog

 2012-12-04  Marcus Shawcroft <marcus.shawcroft@arm.com>
 
+        * config/aarch64/sfp-machine.h (FP_EX_ALL): Define.
+	(FP_EX_SHIFT): Define.
+	(FP_TRAPPING_EXCEPTIONS): Define.
+
+2012-12-04  Marcus Shawcroft <marcus.shawcroft@arm.com>
+
 	* config/aarch64/sfp-machine.h (FP_RND_MASK): Define.
 	(FP_ROUNDMODE): Use FP_RND_MASK.
 	* config/aarch64/sfp-exceptions.c: New.

libgcc/config/aarch64/sfp-machine.h

@@ -69,6 +69,10 @@ typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
 #define FP_EX_OVERFLOW	0x04
 #define FP_EX_UNDERFLOW	0x08
 #define FP_EX_INEXACT	0x10
+#define FP_EX_SHIFT 8
+#define FP_EX_ALL \
+	(FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \
+	 | FP_EX_INEXACT)
 
 void __sfp_handle_exceptions (int);
 
@@ -78,6 +82,8 @@ void __sfp_handle_exceptions (int);
       __sfp_handle_exceptions (_fex);		\
   } while (0);
 
+#define FP_TRAPPING_EXCEPTIONS ((_fpcr >> FP_EX_SHIFT) & FP_EX_ALL)
+
 #define FP_RND_NEAREST		0x000000
 #define FP_RND_PINF		0x400000
 #define FP_RND_MINF		0x800000