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| author | Tom Musta <tommusta@gmail.com> | 2014-04-21 15:55:15 -0500 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-06-16 13:24:31 +0200 |
| commit | f12141935512fd8e5de1ecbb6494be86ec8880a5 (patch) | |
| tree | ebf98d77af7f7dbcd4b6d014140d3aed7da4c796 /target-ppc/dfp_helper.c | |
| parent | ca603eb4d7015dc9e88b4d325e837950117ad124 (diff) | |
target-ppc: Introduce DFP Convert to Fixed
Add emulation of the PowerPC Decimal Floating Point Convert to
Fixed instructions dctfix[q][.].
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/dfp_helper.c')
| -rw-r--r-- | target-ppc/dfp_helper.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c index 548949fcf0..41f87e070f 100644 --- a/target-ppc/dfp_helper.c +++ b/target-ppc/dfp_helper.c @@ -921,3 +921,29 @@ void helper_drdpq(CPUPPCState *env, uint64_t *t, uint64_t *b) t[0] = dfp.t64[0]; t[1] = 0; } + +#define DFP_HELPER_CFFIX(op, size) \ +void helper_##op(CPUPPCState *env, uint64_t *t, uint64_t *b) \ +{ \ + struct PPC_DFP dfp; \ + dfp_prepare_decimal##size(&dfp, 0, b, env); \ + decNumberFromInt64(&dfp.t, (int64_t)(*b)); \ + decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \ + CFFIX_PPs(&dfp); \ + \ + if (size == 64) { \ + t[0] = dfp.t64[0]; \ + } else if (size == 128) { \ + t[0] = dfp.t64[HI_IDX]; \ + t[1] = dfp.t64[LO_IDX]; \ + } \ +} + +static void CFFIX_PPs(struct PPC_DFP *dfp) +{ + dfp_set_FPRF_from_FRT(dfp); + dfp_check_for_XX(dfp); +} + +DFP_HELPER_CFFIX(dcffix, 64) +DFP_HELPER_CFFIX(dcffixq, 128) |