[Qemu-devel] [6153] Add helper macros for later patches.

[Qemu-devel] [6153] Add helper macros for later patches.

[Aurelien Jarno]

Revision: 6153
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6153
Author:   aurel32
Date:     2009-01-03 13:31:19 +0000 (Sat, 03 Jan 2009)

Log Message:
-----------
Add helper macros for later patches.

Remove N_ELEMS, VECTOR_FOR, and VECTOR_FOR_I macros.  Retain the
VECTOR_FOR_INORDER_I macros as the clearest way of expressing the intent
of iterating over elements in their stored target-endian order.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

Modified Paths:
--------------
    trunk/target-ppc/op_helper.c

Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c	2009-01-03 13:31:10 UTC (rev 6152)
+++ trunk/target-ppc/op_helper.c	2009-01-03 13:31:19 UTC (rev 6153)
@@ -1954,6 +1954,28 @@
 }
 
 /*****************************************************************************/
+/* Altivec extension helpers */
+#if defined(WORDS_BIGENDIAN)
+#define HI_IDX 0
+#define LO_IDX 1
+#else
+#define HI_IDX 1
+#define LO_IDX 0
+#endif
+
+#if defined(WORDS_BIGENDIAN)
+#define VECTOR_FOR_INORDER_I(index, element)            \
+    for (index = 0; index < ARRAY_SIZE(r->element); index++)
+#else
+#define VECTOR_FOR_INORDER_I(index, element)            \
+  for (index = ARRAY_SIZE(r->element)-1; index >= 0; index--)
+#endif
+
+#undef VECTOR_FOR_INORDER_I
+#undef HI_IDX
+#undef LO_IDX
+
+/*****************************************************************************/
 /* SPE extension helpers */
 /* Use a table to make this quicker */
 static uint8_t hbrev[16] = {