From: Tom Musta <tommu...@gmail.com>
This patch adds decoders for the VSX fields XT, XS, XA, XB and
DM. The first four are split fields and a general helper for
these types of fields is also added.
Signed-off-by: Tom Musta <tommu...@gmail.com>
Signed-off-by: Anton Blanchard <an...@samba.org>
---
Index: b/target-ppc/translate.c
===================================================================
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -370,6 +370,12 @@ static inline int32_t name(uint32_t opco
return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
}
+#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
+static inline uint32_t name(uint32_t opcode) \
+{ \
+ return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
+ ((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
+}
/* Opcode part 1 */
EXTRACT_HELPER(opc1, 26, 6);
/* Opcode part 2 */
@@ -484,6 +490,11 @@ static inline target_ulong MASK(uint32_t
return ret;
}
+EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
+EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
+EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
+EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
+EXTRACT_HELPER(DM, 8, 2);
/*****************************************************************************/
/* PowerPC instructions table */
