mirror of https://github.com/proxmox/mirror_qemu
target/ppc: introduce dfp_finalize_decimal{64,128}() helper functions
Most of the DFP helper functions call decimal{64,128}FromNumber() just before returning in order to convert the decNumber stored in dfp.t64 back to a Decimal{64,128} to write back to the FP registers. Introduce new dfp_finalize_decimal{64,128}() helper functions which both enable the parameter list to be reduced considerably, and also help minimise the changes required in the next patch. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20190926185801.11176-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>master
parent
d9acba3130
commit
474c2e931d
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@ -191,6 +191,16 @@ static void dfp_prepare_decimal128(struct PPC_DFP *dfp, ppc_fprp_t *a,
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}
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}
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static void dfp_finalize_decimal64(struct PPC_DFP *dfp)
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{
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decimal64FromNumber((decimal64 *)&dfp->t64, &dfp->t, &dfp->context);
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}
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static void dfp_finalize_decimal128(struct PPC_DFP *dfp)
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{
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decimal128FromNumber((decimal128 *)&dfp->t64, &dfp->t, &dfp->context);
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}
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static void dfp_set_FPSCR_flag(struct PPC_DFP *dfp, uint64_t flag,
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uint64_t enabled)
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{
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@ -422,7 +432,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a, \
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struct PPC_DFP dfp; \
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dfp_prepare_decimal##size(&dfp, a, b, env); \
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dnop(&dfp.t, &dfp.a, &dfp.b, &dfp.context); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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postprocs(&dfp); \
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if (size == 64) { \
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set_dfp64(t, dfp.t64); \
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@ -491,7 +501,7 @@ uint32_t helper_##op(CPUPPCState *env, ppc_fprp_t *a, ppc_fprp_t *b) \
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struct PPC_DFP dfp; \
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dfp_prepare_decimal##size(&dfp, a, b, env); \
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dnop(&dfp.t, &dfp.a, &dfp.b, &dfp.context); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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postprocs(&dfp); \
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return dfp.crbf; \
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}
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@ -741,8 +751,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b, \
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dfp.a.exponent = (int32_t)((int8_t)(te << 3) >> 3); \
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\
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dfp_quantize(rmc, &dfp); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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QUA_PPs(&dfp); \
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\
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if (size == 64) { \
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@ -764,8 +773,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a, \
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dfp_prepare_decimal##size(&dfp, a, b, env); \
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\
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dfp_quantize(rmc, &dfp); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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QUA_PPs(&dfp); \
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\
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if (size == 64) { \
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@ -847,8 +855,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a, \
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ref_sig = a64 & 0x3f; \
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\
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_dfp_reround(rmc, ref_sig, xmax, &dfp); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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QUA_PPs(&dfp); \
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\
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if (size == 64) { \
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@ -871,7 +878,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b, \
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\
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dfp_set_round_mode_from_immediate(r, rmc, &dfp); \
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decNumberToIntegralExact(&dfp.t, &dfp.b, &dfp.context); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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postprocs(&dfp); \
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\
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if (size == 64) { \
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@ -911,7 +918,7 @@ void helper_dctdp(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b)
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dfp_prepare_decimal64(&dfp, 0, 0, env);
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decimal32ToNumber((decimal32 *)&b_short, &dfp.t);
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decimal64FromNumber((decimal64 *)&dfp.t64, &dfp.t, &dfp.context);
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dfp_finalize_decimal64(&dfp);
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set_dfp64(t, dfp.t64);
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dfp_set_FPRF_from_FRT(&dfp);
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}
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@ -927,7 +934,7 @@ void helper_dctqpq(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b)
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dfp_check_for_VXSNAN_and_convert_to_QNaN(&dfp);
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dfp_set_FPRF_from_FRT(&dfp);
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decimal128FromNumber((decimal128 *)&dfp.t64, &dfp.t, &dfp.context);
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dfp_finalize_decimal128(&dfp);
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set_dfp128(t, dfp.t64);
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}
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@ -963,7 +970,7 @@ void helper_drdpq(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b)
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dfp_check_for_XX(&dfp);
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dfp.t64[0] = dfp.t64[1] = 0;
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decimal64FromNumber((decimal64 *)dfp.t64, &dfp.t, &dfp.context);
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dfp_finalize_decimal64(&dfp);
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set_dfp128(t, dfp.t64);
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}
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@ -975,7 +982,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b) \
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dfp_prepare_decimal##size(&dfp, 0, b, env); \
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get_dfp64(&b64, b); \
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decNumberFromInt64(&dfp.t, (int64_t)b64); \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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CFFIX_PPs(&dfp); \
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\
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if (size == 64) { \
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@ -1155,8 +1162,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b, \
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if (s && sgn) { \
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dfp.t.bits |= DECNEG; \
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} \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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dfp_set_FPRF_from_FRT(&dfp); \
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if ((size) == 64) { \
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set_dfp64(t, dfp.t64); \
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@ -1259,8 +1265,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a, \
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dfp.t.bits &= ~DECSPECIAL; \
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} \
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dfp.t.exponent = exp - bias; \
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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} \
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if (size == 64) { \
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set_dfp64(t, dfp.t64); \
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@ -1340,8 +1345,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a, \
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dfp.t.digits = max_digits - 1; \
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} \
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\
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decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, \
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&dfp.context); \
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dfp_finalize_decimal##size(&dfp); \
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} else { \
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if ((size) == 64) { \
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dfp.t64[0] = dfp.a64[0] & 0xFFFC000000000000ULL; \
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