target/ppc: Replicate Double->Single-Precision result
Power ISA v3.1 formalizes the previously undefined result in words 1 and 3 to be a copy of the result in words 0 and 2. This affects: xvcvsxdsp, xvcvuxdsp, xvcvdpsp. And the previously undefined result in word 1 to be a copy of the result in word 0. This affects: xscvdpsp. Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br> Message-Id: <20220316200427.3410437-1-lucas.coutinho@eldorado.org.br> Signed-off-by: Cédric Le Goater <clg@kaod.org>
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@ -2691,11 +2691,35 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
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do_float_check_status(env, GETPC()); \
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}
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VSX_CVT_FP_TO_FP(xscvdpsp, 1, float64, float32, VsrD(0), VsrW(0), 1)
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VSX_CVT_FP_TO_FP(xscvspdp, 1, float32, float64, VsrW(0), VsrD(0), 1)
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VSX_CVT_FP_TO_FP(xvcvdpsp, 2, float64, float32, VsrD(i), VsrW(2 * i), 0)
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VSX_CVT_FP_TO_FP(xvcvspdp, 2, float32, float64, VsrW(2 * i), VsrD(i), 0)
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#define VSX_CVT_FP_TO_FP2(op, nels, stp, ttp, sfprf) \
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void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
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{ \
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ppc_vsr_t t = { }; \
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int i; \
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\
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for (i = 0; i < nels; i++) { \
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t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
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if (unlikely(stp##_is_signaling_nan(xb->VsrD(i), \
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&env->fp_status))) { \
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float_invalid_op_vxsnan(env, GETPC()); \
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t.VsrW(2 * i) = ttp##_snan_to_qnan(t.VsrW(2 * i)); \
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} \
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if (sfprf) { \
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helper_compute_fprf_##ttp(env, t.VsrW(2 * i)); \
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} \
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t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
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} \
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\
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*xt = t; \
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do_float_check_status(env, GETPC()); \
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}
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VSX_CVT_FP_TO_FP2(xvcvdpsp, 2, float64, float32, 0)
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VSX_CVT_FP_TO_FP2(xscvdpsp, 1, float64, float32, 1)
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/*
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* VSX_CVT_FP_TO_FP_VECTOR - VSX floating point/floating point conversion
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* op - instruction mnemonic
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@ -3013,11 +3037,27 @@ VSX_CVT_INT_TO_FP(xvcvsxddp, 2, int64, float64, VsrD(i), VsrD(i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvuxddp, 2, uint64, float64, VsrD(i), VsrD(i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvsxwdp, 2, int32, float64, VsrW(2 * i), VsrD(i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvuxwdp, 2, uint64, float64, VsrW(2 * i), VsrD(i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvsxdsp, 2, int64, float32, VsrD(i), VsrW(2 * i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvuxdsp, 2, uint64, float32, VsrD(i), VsrW(2 * i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, VsrW(i), VsrW(i), 0, 0)
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VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, VsrW(i), VsrW(i), 0, 0)
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#define VSX_CVT_INT_TO_FP2(op, stp, ttp) \
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void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
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{ \
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ppc_vsr_t t = { }; \
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int i; \
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\
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for (i = 0; i < 2; i++) { \
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t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
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t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
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} \
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\
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*xt = t; \
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do_float_check_status(env, GETPC()); \
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}
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VSX_CVT_INT_TO_FP2(xvcvsxdsp, int64, float32)
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VSX_CVT_INT_TO_FP2(xvcvuxdsp, uint64, float32)
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/*
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* VSX_CVT_INT_TO_FP_VECTOR - VSX integer to floating point conversion
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* op - instruction mnemonic
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