diff options
Diffstat (limited to 'target/ppc/dfp_helper.c')
| -rw-r--r-- | target/ppc/dfp_helper.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/ppc/dfp_helper.c b/target/ppc/dfp_helper.c index 6b837c4450..6ab46d7db5 100644 --- a/target/ppc/dfp_helper.c +++ b/target/ppc/dfp_helper.c @@ -51,6 +51,11 @@ static void set_dfp128(ppc_fprp_t *dfp, ppc_vsr_t *src) dfp[1].VsrD(0) = src->VsrD(1); } +static void set_dfp128_to_avr(ppc_avr_t *dst, ppc_vsr_t *src) +{ + *dst = *src; +} + struct PPC_DFP { CPUPPCState *env; ppc_vsr_t vt, va, vb; @@ -1020,6 +1025,53 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b) \ DFP_HELPER_CTFIX(dctfix, 64) DFP_HELPER_CTFIX(dctfixq, 128) +void helper_DCTFIXQQ(CPUPPCState *env, ppc_avr_t *t, ppc_fprp_t *b) +{ + struct PPC_DFP dfp; + dfp_prepare_decimal128(&dfp, 0, b, env); + + if (unlikely(decNumberIsSpecial(&dfp.b))) { + uint64_t invalid_flags = FP_VX | FP_VXCVI; + if (decNumberIsInfinite(&dfp.b)) { + if (decNumberIsNegative(&dfp.b)) { + dfp.vt.VsrD(0) = INT64_MIN; + dfp.vt.VsrD(1) = 0; + } else { + dfp.vt.VsrD(0) = INT64_MAX; + dfp.vt.VsrD(1) = UINT64_MAX; + } + } else { /* NaN */ + dfp.vt.VsrD(0) = INT64_MIN; + dfp.vt.VsrD(1) = 0; + if (decNumberIsSNaN(&dfp.b)) { + invalid_flags |= FP_VXSNAN; + } + } + dfp_set_FPSCR_flag(&dfp, invalid_flags, FP_VE); + } else if (unlikely(decNumberIsZero(&dfp.b))) { + dfp.vt.VsrD(0) = 0; + dfp.vt.VsrD(1) = 0; + } else { + decNumberToIntegralExact(&dfp.b, &dfp.b, &dfp.context); + decNumberIntegralToInt128(&dfp.b, &dfp.context, + &dfp.vt.VsrD(1), &dfp.vt.VsrD(0)); + if (decContextTestStatus(&dfp.context, DEC_Invalid_operation)) { + if (decNumberIsNegative(&dfp.b)) { + dfp.vt.VsrD(0) = INT64_MIN; + dfp.vt.VsrD(1) = 0; + } else { + dfp.vt.VsrD(0) = INT64_MAX; + dfp.vt.VsrD(1) = UINT64_MAX; + } + dfp_set_FPSCR_flag(&dfp, FP_VX | FP_VXCVI, FP_VE); + } else { + dfp_check_for_XX(&dfp); + } + } + + set_dfp128_to_avr(t, &dfp.vt); +} + static inline void dfp_set_bcd_digit_64(ppc_vsr_t *t, uint8_t digit, unsigned n) { |