target-ppc: Introduce DFP Convert to Fixed
Add emulation of the PowerPC Decimal Floating Point Convert to
Fixed instructions dctfix[q][.].
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c
index 548949f..41f87e0 100644
--- a/target-ppc/dfp_helper.c
+++ b/target-ppc/dfp_helper.c
@@ -921,3 +921,29 @@
t[0] = dfp.t64[0];
t[1] = 0;
}
+
+#define DFP_HELPER_CFFIX(op, size) \
+void helper_##op(CPUPPCState *env, uint64_t *t, uint64_t *b) \
+{ \
+ struct PPC_DFP dfp; \
+ dfp_prepare_decimal##size(&dfp, 0, b, env); \
+ decNumberFromInt64(&dfp.t, (int64_t)(*b)); \
+ decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
+ CFFIX_PPs(&dfp); \
+ \
+ if (size == 64) { \
+ t[0] = dfp.t64[0]; \
+ } else if (size == 128) { \
+ t[0] = dfp.t64[HI_IDX]; \
+ t[1] = dfp.t64[LO_IDX]; \
+ } \
+}
+
+static void CFFIX_PPs(struct PPC_DFP *dfp)
+{
+ dfp_set_FPRF_from_FRT(dfp);
+ dfp_check_for_XX(dfp);
+}
+
+DFP_HELPER_CFFIX(dcffix, 64)
+DFP_HELPER_CFFIX(dcffixq, 128)
