diff options
Diffstat (limited to 'target-ppc/dfp_helper.c')
-rw-r--r-- | target-ppc/dfp_helper.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c index 050a339f1d..548949fcf0 100644 --- a/target-ppc/dfp_helper.c +++ b/target-ppc/dfp_helper.c @@ -249,6 +249,20 @@ static void dfp_set_FPRF_from_FRT(struct PPC_DFP *dfp) dfp_set_FPRF_from_FRT_with_context(dfp, &dfp->context); } +static void dfp_set_FPRF_from_FRT_short(struct PPC_DFP *dfp) +{ + decContext shortContext; + decContextDefault(&shortContext, DEC_INIT_DECIMAL32); + dfp_set_FPRF_from_FRT_with_context(dfp, &shortContext); +} + +static void dfp_set_FPRF_from_FRT_long(struct PPC_DFP *dfp) +{ + decContext longContext; + decContextDefault(&longContext, DEC_INIT_DECIMAL64); + dfp_set_FPRF_from_FRT_with_context(dfp, &longContext); +} + static void dfp_check_for_OX(struct PPC_DFP *dfp) { if (dfp->context.status & DEC_Overflow) { @@ -873,3 +887,37 @@ void helper_dctqpq(CPUPPCState *env, uint64_t *t, uint64_t *b) t[0] = dfp.t64[HI_IDX]; t[1] = dfp.t64[LO_IDX]; } + +void helper_drsp(CPUPPCState *env, uint64_t *t, uint64_t *b) +{ + struct PPC_DFP dfp; + uint32_t t_short = 0; + dfp_prepare_decimal64(&dfp, 0, b, env); + decimal32FromNumber((decimal32 *)&t_short, &dfp.b, &dfp.context); + decimal32ToNumber((decimal32 *)&t_short, &dfp.t); + + dfp_set_FPRF_from_FRT_short(&dfp); + dfp_check_for_OX(&dfp); + dfp_check_for_UX(&dfp); + dfp_check_for_XX(&dfp); + + *t = t_short; +} + +void helper_drdpq(CPUPPCState *env, uint64_t *t, uint64_t *b) +{ + struct PPC_DFP dfp; + dfp_prepare_decimal128(&dfp, 0, b, env); + decimal64FromNumber((decimal64 *)&dfp.t64, &dfp.b, &dfp.context); + decimal64ToNumber((decimal64 *)&dfp.t64, &dfp.t); + + dfp_check_for_VXSNAN_and_convert_to_QNaN(&dfp); + dfp_set_FPRF_from_FRT_long(&dfp); + dfp_check_for_OX(&dfp); + dfp_check_for_UX(&dfp); + dfp_check_for_XX(&dfp); + + decimal64FromNumber((decimal64 *)dfp.t64, &dfp.t, &dfp.context); + t[0] = dfp.t64[0]; + t[1] = 0; +} |