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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 | |
| parent | ca603eb4d7015dc9e88b4d325e837950117ad124 (diff) | |
| download | qemu-f12141935512fd8e5de1ecbb6494be86ec8880a5.tar.gz | |
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>
| -rw-r--r-- | target-ppc/dfp_helper.c | 26 | ||||
| -rw-r--r-- | target-ppc/helper.h | 2 | ||||
| -rw-r--r-- | target-ppc/translate.c | 4 |
3 files changed, 32 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) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 2220e62009..bc7b2d2b64 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -650,3 +650,5 @@ DEF_HELPER_3(dctdp, void, env, fprp, fprp) DEF_HELPER_3(dctqpq, void, env, fprp, fprp) DEF_HELPER_3(drsp, void, env, fprp, fprp) DEF_HELPER_3(drdpq, void, env, fprp, fprp) +DEF_HELPER_3(dcffix, void, env, fprp, fprp) +DEF_HELPER_3(dcffixq, void, env, fprp, fprp) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 67da056ae2..78c36589dc 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -8390,6 +8390,8 @@ GEN_DFP_T_B_Rc(dctdp) GEN_DFP_T_B_Rc(dctqpq) GEN_DFP_T_B_Rc(drsp) GEN_DFP_T_B_Rc(drdpq) +GEN_DFP_T_B_Rc(dcffix) +GEN_DFP_T_B_Rc(dcffixq) /*** SPE extension ***/ /* Register moves */ @@ -11351,6 +11353,8 @@ GEN_DFP_T_B_Rc(dctdp, 0x02, 0x08), GEN_DFP_Tp_B_Rc(dctqpq, 0x02, 0x08), GEN_DFP_T_B_Rc(drsp, 0x02, 0x18), GEN_DFP_Tp_Bp_Rc(drdpq, 0x02, 0x18), +GEN_DFP_T_B_Rc(dcffix, 0x02, 0x19), +GEN_DFP_Tp_B_Rc(dcffixq, 0x02, 0x19), #undef GEN_SPE #define GEN_SPE(name0, name1, opc2, opc3, inval0, inval1, type) \ GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type, PPC_NONE) |