@@ -932,3 +932,28 @@ void helper_drdpq(CPUPPCState *env, uint64_t *t, uint64_t *b)
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); \
+ dfp_run_post_processors(&dfp, CFFIX_PPs, ARRAY_SIZE(CFFIX_PPs)); \
+ \
+ if (size == 64) { \
+ t[0] = dfp.t64[0]; \
+ } else if (size == 128) { \
+ t[0] = dfp.t64[HI_IDX]; \
+ t[1] = dfp.t64[LO_IDX]; \
+ } \
+}
+
+PPC_DFP_PostProc CFFIX_PPs[] = {
+ dfp_set_FPRF_from_FRT,
+ dfp_check_for_XX,
+};
+
+DFP_HELPER_CFFIX(dcffix, 64)
+DFP_HELPER_CFFIX(dcffixq, 128)
@@ -652,4 +652,6 @@ DEF_HELPER_3(dctdp, void, env, fprp, fprp)
DEF_HELPER_3(dctqpq, void, env, fprp, fprp)
DEF_HELPER_3(drsp, void, env, fprp, fprp)
DEF_HELPER_3(drdpq, void, env, fprp, fprp)
+DEF_HELPER_3(dcffix, void, env, fprp, fprp)
+DEF_HELPER_3(dcffixq, void, env, fprp, fprp)
#include "exec/def-helper.h"
@@ -8390,6 +8390,8 @@ GEN_DFP_T_B_Rc(dctdp)
GEN_DFP_T_B_Rc(dctqpq)
GEN_DFP_T_B_Rc(drsp)
GEN_DFP_T_B_Rc(drdpq)
+GEN_DFP_T_B_Rc(dcffix)
+GEN_DFP_T_B_Rc(dcffixq)
/*** SPE extension ***/
/* Register moves */
@@ -11351,6 +11353,8 @@ GEN_DFP_T_B_Rc(dctdp, 0x02, 0x08),
GEN_DFP_Tp_B_Rc(dctqpq, 0x02, 0x08),
GEN_DFP_T_B_Rc(drsp, 0x02, 0x18),
GEN_DFP_Tp_Bp_Rc(drdpq, 0x02, 0x18),
+GEN_DFP_T_B_Rc(dcffix, 0x02, 0x19),
+GEN_DFP_Tp_B_Rc(dcffixq, 0x02, 0x19),
#undef GEN_SPE
#define GEN_SPE(name0, name1, opc2, opc3, inval0, inval1, type) \
GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type, PPC_NONE)
Add emulation of the PowerPC Decimal Floating Point Convert to Fixed instructions dctfix[q][.]. Signed-off-by: Tom Musta <tommusta@gmail.com> --- target-ppc/dfp_helper.c | 25 +++++++++++++++++++++++++ target-ppc/helper.h | 2 ++ target-ppc/translate.c | 4 ++++ 3 files changed, 31 insertions(+), 0 deletions(-)