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target/ppc: Implement DCFFIXQQ

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Implement the following PowerISA v3.1 instruction:
dcffixqq: DFP Convert From Fixed Quadword Quad

Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211029192417.400707-5-luis.pires@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Luis Pires 2021-10-29 16:24:06 -03:00 • committed by David Gibson
parent 86057426d0
commit d39b2cc7d0
5 changed files with 43 additions and 0 deletions
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12
target/ppc/dfp_helper.c
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@ -970,6 +970,18 @@ static void CFFIX_PPs(struct PPC_DFP *dfp)
DFP_HELPER_CFFIX(dcffix, 64)
DFP_HELPER_CFFIX(dcffixq, 128)
void helper_DCFFIXQQ(CPUPPCState *env, ppc_fprp_t *t, ppc_avr_t *b)
{
struct PPC_DFP dfp;
dfp_prepare_decimal128(&dfp, NULL, NULL, env);
decNumberFromInt128(&dfp.t, (uint64_t)b->VsrD(1), (int64_t)b->VsrD(0));
dfp_finalize_decimal128(&dfp);
CFFIX_PPs(&dfp);
set_dfp128(t, &dfp.vt);
}
#define DFP_HELPER_CTFIX(op, size) \
void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b) \
{ \