gcc:

	* dfp.c (WORDS_BIGENDIAN): Define to 0 if not defined.
	(encode_decimal64, decode_decimal64, encode_decimal128,
	decode_decimal128): Reverse order of 32-bit parts of value if host
	and target endianness differ.

libdecnumber:
	* dconfig.h: New.
	* decContext.c, decExcept.c, decExcept.h, decLibrary.c,
	decNumber.c, decNumberLocal.h, decRound.c, dpd/decimal128.c,
	dpd/decimal32.c, dpd/decimal64.c: Include dconfig.h not config.h.
	* dpd/decimal128Local.h (decimal128SetSign, decimal128ClearSign,
	decimal128FlipSign): Use WORDS_BIGENDIAN not
	FLOAT_WORDS_BIG_ENDIAN.
	* bid/host-ieee128.c: Include dconfig.h.
	(__host_to_ieee_128, __ieee_to_host_128): Swap 64-bit halves of
	value if WORDS_BIGENDIAN.

libgcc:
	* Makefile.in (DECNUMINC): Remove
	-I$(MULTIBUILDTOP)../../libdecnumber.
	* gstdint.h: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@136641 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 15 insertions, 0 deletions

diff --git a/libdecnumber/bid/host-ieee128.c b/libdecnumber/bid/host-ieee128.c
index 6d493e5c9d8..12632c8aab2 100644
--- a/libdecnumber/bid/host-ieee128.c
+++ b/libdecnumber/bid/host-ieee128.c
@@ -29,20 +29,35 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 
 #include <string.h>
 
+#include "dconfig.h"
 #include "bid-dpd.h"
 #include "decimal128.h"
 
 void __host_to_ieee_128 (_Decimal128 in, decimal128 *out);
 void __ieee_to_host_128 (decimal128 in, _Decimal128 *out);
 
+/* The code for converting 128-bit values between DPD and BID presumes
+   that the 64-bit halves of the 128-bit value are in little-endian
+   order, so they need swapping on big-endian hosts.  */
+
 void
 __host_to_ieee_128 (_Decimal128 in, decimal128 *out)
 {
+#if WORDS_BIGENDIAN
+  memcpy ((char *) out, (char *) &in + 8, 8);
+  memcpy ((char *) out + 8, (char *) &in, 8);
+#else
   memcpy ((char *) out, (char *) &in, 16);
+#endif
 }
 
 void
 __ieee_to_host_128 (decimal128 in, _Decimal128 *out)
 {
+#if WORDS_BIGENDIAN
+  memcpy ((char *) out, (char *) &in + 8, 8);
+  memcpy ((char *) out + 8, (char *) &in, 8);
+#else
   memcpy ((char *) out, (char *) &in, 16);
+#endif
 }