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X-Received-From: 2607:f8b0:400d:c01::236 Cc: Tom Musta , qemu-ppc@nongnu.org Subject: [Qemu-devel] [PATCH 31/37] target-ppc: Introduce DFP Convert to Fixed X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add emulation of the PowerPC Decimal Floating Point Convert to Fixed instructions dctfix[q][.]. Signed-off-by: Tom Musta --- target-ppc/dfp_helper.c | 25 +++++++++++++++++++++++++ target-ppc/helper.h | 2 ++ target-ppc/translate.c | 4 ++++ 3 files changed, 31 insertions(+), 0 deletions(-) diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c index 25afaba..ea9ef15 100644 --- a/target-ppc/dfp_helper.c +++ b/target-ppc/dfp_helper.c @@ -932,3 +932,28 @@ 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); \ + dfp_run_post_processors(&dfp, CFFIX_PPs, ARRAY_SIZE(CFFIX_PPs)); \ + \ + if (size == 64) { \ + t[0] = dfp.t64[0]; \ + } else if (size == 128) { \ + t[0] = dfp.t64[HI_IDX]; \ + t[1] = dfp.t64[LO_IDX]; \ + } \ +} + +PPC_DFP_PostProc CFFIX_PPs[] = { + dfp_set_FPRF_from_FRT, + dfp_check_for_XX, +}; + +DFP_HELPER_CFFIX(dcffix, 64) +DFP_HELPER_CFFIX(dcffixq, 128) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index d9ef8f6..0f64fb8 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -652,4 +652,6 @@ 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) #include "exec/def-helper.h" diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 391f55d..76682f6 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)